Patent Description:
This application relates to the technical field of electronic devices, and in particular, to an electronic device.

At present, an electronic device such as a mobile phone, a tablet computer, and a smart wearable device has a battery, and the battery is used to supply power to the electronic device, so as to facilitate the carrying of the electronic device. However, the battery is at risk of expansion after long-term charging and discharging in use. In order to avoid the damage to the whole electronic device caused by battery expansion, the thickness of the whole electronic device is usually increased to reserve the expansion space of the battery. However, in the related art, due to structural limitations, the thickness of the reserved expansion space is relatively thick, resulting in a larger thickness of the electronic device, which is not conducive to a light and thin design of the electronic device. <CIT> discloses a portable device incorporating a battery pack, wherein the portable device comprises a housing, a battery pack installation surface, and a flat rectangular battery pack housed in the housing. The battery pack has a battery body and a cover sheet wrapped around said body. The battery pack has a first surface with a central portion whereon the cover sheet is not wrapped. The device further comprises an electrical connector on the first surface which does not reach the central portion. <CIT> discloses a battery fixing device and an electronic device comprising a casing battery chamber, and a container fixedly arranged in the casing battery chamber and matched with the casing battery chamber to wrap and fix the battery. The container includes a containing chamber formed by a surround of a film and configured to contain a battery, and fixing films arranged on the containing chamber and connected to the containing chamber to fix the top of the containing chamber. <CIT> discloses an electronic device, which includes: the main control circuit board, the battery module and the fingerprint module; the battery module is electrically connected with the main control circuit board; the battery module comprises a battery main body and a battery circuit board; the battery circuit board is arranged on the side surface of the battery main body, and the thickness of the battery circuit board is smaller than that of the battery main body.

To solve the problem of reducing the thickness of an electronic device, embodiments of this application provide an electronic device according to the enclosed independent claim <NUM>. Advantageous features of the present invention are defined in the corresponding dependent claims.

In the following, parts of the description and drawings referring to embodiments, which are not covered by the claims, are not presented as embodiments of the invention but as examples useful for understanding the invention. The electronic device includes: a housing, a battery, and an electrical connector. A battery compartment is arranged in the housing. The battery is mounted in the battery compartment and includes a battery body and a wrapping film wrapped around a surface of the battery body. The battery body has a first surface, the first surface has an expansion region, a distance between each edge of the expansion region and a peripheral edge of the first surface is d, and d = (<NUM>*h + a), wherein h is a thickness of the battery body and a is in a range of [<NUM>, <NUM>] mm. At least part of the electrical connector is located on the first surface, and the part of the electrical connector located on the first surface does not overlap with the wrapping film in the expansion region.

In the electronic device provided in the embodiment of this application, since the part of the electrical connector located on the first surface does not overlap with the wrapping film in the expansion region, an overall thickness of the battery and the electrical connector corresponding to a position of the expansion region will not be increased, and a thickness of the expansion space that needs to be reserved is relatively small, which is conducive to reducing the thickness of the electronic device and can achieve a thin electronic device at least to a certain extent.

Optionally, the first surface faces away from a bottom wall of the battery compartment, or the first surface faces the bottom wall of the battery compartment. In an implementation disclosed in this application, a is in a range of [<NUM>, <NUM>] mm. Specifically, according to the claimed invention, a is in a range of [<NUM>, <NUM>] mm. In this way, the expansion region can be reasonably arranged to ensure that when the battery body is expanded, the position of the maximum thickness of the battery body is located in the expansion region.

In an optional implementation provided in this application, a is in a range of (<NUM>, <NUM>] mm. In this way, the expansion region can be reasonably arranged to ensure that when the battery body is expanded, the position of the maximum thickness of the battery body is located in the expansion region.

In an optional implementation provided in this application, the battery body further has a second surface opposite to the first surface and two side surfaces connected between the first surface and the second surface and opposite to each other. The wrapping film includes a first portion, a second portion, and a third portion connected in sequence, the first portion is wrapped around the first surface, the second portion is wrapped around one of the two side surfaces, and the third portion is wrapped around the second surface.

In an optional implementation provided in this application, the wrapping film includes a tearable portion, and the tearable portion is connected to an end of the first portion away from the second portion. In this way, the wrapping film may be used as a tearable film. When the battery is located in the battery compartment and the tearable portion is located on the first surface, the user can easily take out the battery from the battery compartment by pulling the tearable portion, which is convenient for the user to use.

Further, the tearable portion has an avoidance notch configured to give way to the electrical connector. In this way, the wrapping film may be prevented from overlapping with the electrical connector in the expansion region.

In an optional implementation provided in this application, a part of the first portion is wrapped in the expansion region, and a first notch is provided at a part of the first portion corresponding to the electrical connector. In this way, the part of the first portion can be located in the expansion region, which can increase the protection performance and tearing reliability of the battery body. On this basis, the arrangement of the first notch can prevent the wrapping film and the electrical connector from overlapping in the expansion region.

In an optional implementation provided in this application, the first notch extends to an edge of the first portion in a direction from the first portion to the second portion.

In an optional implementation provided in this application, the second portion has formed thereon a first communication notch extending through the second portion in a thickness direction of the second portion, and the first communication notch is in communication with the first notch.

In an optional implementation provided in this application, the wrapping film further includes a fourth portion and a fifth portion. The fourth portion is connected to an end of the third portion away from the second portion, and the fifth portion is connected to an end of the fourth portion away from the third portion. The fourth portion is wrapped around the other of the two side surfaces, and the fifth portion is wrapped around the first surface. This arrangement can increase the wrapping range of the wrapping film, thereby further improving the protection performance of the wrapping film on the battery body.

In an optional implementation provided in this application, a part of the fifth portion is wrapped in the expansion region, and a second notch is provided at a part of the fifth portion corresponding to the electrical connector in the expansion region. In this way, the part of the fifth portion can be located in the expansion region, which can increase the protection performance and tearing reliability of the battery body. On this basis, the arrangement of the second notch can prevent the wrapping film and the electrical connector from overlapping in the expansion region.

In an optional implementation provided in this application, the second notch extends to an edge of the fifth portion in a direction from the fifth portion to the fourth portion.

In an optional implementation provided in this application, the fourth portion has formed thereon a second communication notch extending through the fourth portion in a thickness direction of the fourth portion and in communication with the second notch.

In an optional implementation provided in this application, the battery body further includes a first end surface connected between the two side surfaces, the first end surface has an electrical connection terminal, and the first surface, the second surface, and the two side surfaces are arranged along a circumferential direction of the first end surface.

In an optional implementation provided in this application, the electronic device further includes a main circuit board and a side functional device, where the electrical connector is configured to connect the main circuit board to the side functional device.

In an optional implementation provided in this application, the main circuit board is located on a side of the battery compartment adjacent to the first end surface, and the side functional device faces one of the side surfaces.

In an optional implementation provided in this application, the side functional device is a side button and/or a side fingerprint recognition module.

In an optional implementation provided in this application, the electronic device includes a main circuit board and an auxiliary circuit board. The electrical connector is configured to connect the main circuit board to the auxiliary circuit board.

In an optional implementation provided in this application, the battery body has a second end surface opposite to the first end surface. One of the main circuit board and the auxiliary circuit board is located on the side of the battery compartment adjacent to the first end surface, and the other of the main circuit board and the auxiliary circuit board is located on a side of the battery compartment adjacent to the second end surface.

In an optional implementation provided in this application, the electrical connector is arranged adjacent to one of the side surfaces.

In an optional implementation provided in this application, the electronic device further includes a main circuit board and a display, where the electrical connector bypasses the battery to connect the main circuit board to the display.

In an optional implementation provided in this application, the main circuit board is located on the side of the battery compartment adjacent to the first end surface, and the display is located on a side of the battery facing away from the first surface.

In an optional implementation provided in this application, the electrical connector is a flexible printed circuit board. In this way, the structure is simple and costs are low.

In an optional implementation provided in this application, the electronic device includes a main circuit board and a wireless communication module arranged on the main circuit board. The wireless communication module is configured to send and receive a signal via an antenna, and the electrical connector is a radiator of the antenna.

In an optional implementation provided in this application, the electronic device further includes a separator. The separator is located between the first surface and a surface of the housing opposite to the first surface. A giving-way notch is formed on the part of the wrapping film wrapped around the first surface, and the giving-way notch is configured to give way to the separator.

In the embodiments of this application, terms "first", "second", "third", "fourth", and "fifth" are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, a feature defined by "first", "second", "third", "fourth", and "fifth" can explicitly or implicitly includes one or more features.

In the embodiments of this application, the terms "include", "comprise", and any variants thereof are intended to cover a non-exclusive inclusion. Therefore, in the context of a process, method, object, or apparatus that includes a series of elements, the process, method, object, or apparatus not only includes such elements, but also includes other elements not specified expressly, or may include inherent elements of the process, method, object, or apparatus. Without more limitations, elements defined by the sentence "including one" does not exclude that there are still other same elements in the processes, methods, objects, or apparatuses.

In the embodiments of this application, "and/or" describes only an association relationship for describing associated objects and indicates that three relationships may exist.

This application provides an electronic device <NUM>. The electronic device <NUM> is a type of electronic device <NUM> having a battery <NUM>. Specifically, the electronic device <NUM> includes, but is not limited to, electronic devices <NUM> such as a mobile phone, a tablet personal computer (tablet personal computer), a laptop computer (laptop computer), a personal digital assistant (personal digital assistant, PDA), a personal computer, a notebook computer, an onboard device, a wearable device, and the like.

Referring to <FIG> and <FIG>, <FIG> is a schematic structural diagram of an electronic device <NUM> according to some embodiments of this application, and <FIG> is an exploded view of the electronic device <NUM> shown in <FIG>. In this embodiment, the electronic device <NUM> is a phablet. Specifically, the electronic device <NUM> includes a housing <NUM>, a display <NUM>, a side functional device <NUM>, a main circuit board <NUM>, an auxiliary circuit board <NUM>, a battery <NUM>, and an electrical connector <NUM>.

The housing <NUM> is configured to protect internal circuit elements of the electronic device <NUM>. Still referring to <FIG>, the housing <NUM> includes a front cover plate <NUM> and a back housing <NUM>.

The front cover plate <NUM> is a light transmissive member, and a material of the front cover plate <NUM> includes but is not limited to glass, plastic, or ceramic.

The back housing <NUM> includes a back cover <NUM> and a border frame <NUM>. The back cover <NUM> and the front cover plate <NUM> are stacked and spaced apart from each other. The border frame <NUM> surrounds a periphery of the front cover plate <NUM> and is located between the front cover plate <NUM> and the back cover <NUM>.

Specifically, the border frame <NUM> is fixed to the back cover <NUM>. For example, the border frame <NUM> may be fixedly connected to the back cover <NUM> by gluing, welding, or snapping. The border frame <NUM> may also be integrally formed with the back cover <NUM>, that is, the border frame <NUM> and the back cover <NUM> are an integral structure.

The front cover plate <NUM> is fixed to the border frame <NUM>. In some embodiments, the front cover plate <NUM> may be fixed to the border frame <NUM> by gluing. The front cover plate <NUM>, the back cover <NUM>, and the border frame <NUM> form an internal accommodating space of the electronic device <NUM>. The internal accommodating space is configured to accommodate the display <NUM>, at least part of the side functional device <NUM>, the main circuit board <NUM>, the auxiliary circuit board <NUM>, the battery <NUM>, the electrical connector <NUM>, and the like.

The display <NUM> is located in the housing <NUM>, and the display <NUM> and the front cover plate <NUM> are stacked and fixedly connected. The display <NUM> is configured to display an image, a video, and the like. A flexible display or a rigid display may be used as the display <NUM>. For example, the display <NUM> may be an organic light-emitting diode (organic light-emitting diode, OLED) display, an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED) display, a mini light-emitting diode (mini organic light-emitting diode) display, a micro light-emitting diode (micro organic light-emitting diode) display, a micro organic light-emitting diode (micro organic light-emitting diode) display, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) display, or a liquid crystal display (liquid crystal display, LCD).

The side functional device <NUM> is located at the border frame <NUM>. The side functional device <NUM> may be a side fingerprint recognition module and/or a side button. That is to say, the side functional device <NUM> may be only a side fingerprint recognition module, and may further be only a side button, or may be a side button and a side fingerprint recognition module. The side fingerprint recognition module may be located on one side of the side button close to inside of the housing <NUM>. The side button may be a power button or a volume button, and the side fingerprint recognition module may be an optical fingerprint recognition module, a capacitive fingerprint recognition module, or a radio frequency fingerprint recognition module.

Further, when the side functional device <NUM> is a side button, or the side functional device <NUM> is a side button and a side fingerprint recognition module, a mounting hole may be provided on the border frame <NUM>. One end of the side button is located in the housing <NUM>, and an other end of the side button passes through the mounting hole and is exposed from the mounting hole, so as to facilitate user triggering.

When the side functional device <NUM> is only a side fingerprint recognition module, a mounting hole may be provided on the border frame <NUM>, so that a fingerprint recognition region of the side fingerprint recognition module can be exposed from the mounting hole, so as to facilitate fingerprint collection. Certainly, mounting holes may not be provided, but other structures may be arranged on the border frame <NUM>, for example, a light transmissive fingerprint collection region is arranged, as long as it is ensured that the fingerprint recognition region of the side fingerprint recognition module directly faces the fingerprint collection region on the border frame <NUM>.

In some embodiments, referring to <FIG>, a middle plate <NUM> is arranged in the housing <NUM>, and the middle plate <NUM> is fixed to a periphery of an inner surface of the border frame <NUM>. For example, the middle plate <NUM> may be fixed to the border frame <NUM> by welding, gluing, or snapping, or may be integrally formed with the border frame <NUM>. The display <NUM> is located between the front cover plate <NUM> and the middle plate <NUM>. At least part of the side functional device <NUM>, the main circuit board <NUM>, the auxiliary circuit board <NUM>, and the battery <NUM> are located between the middle plate <NUM> and the back cover <NUM>. The middle plate <NUM> is used as a structural "skeleton" of the electronic device <NUM>, and the main circuit board <NUM>, the auxiliary circuit board <NUM>, the battery <NUM>, and the like may be fixed to the middle plate <NUM> by threaded connection, snapping, welding, or the like. When the electronic device <NUM> does not include the middle plate <NUM>, the main circuit board <NUM>, the auxiliary circuit board <NUM>, the battery <NUM>, and the like may be fixed to a surface of the display <NUM> toward the back cover <NUM> by threaded connection, snapping, welding, or the like.

Referring to <FIG> and <FIG> is a schematic structural diagram of the electronic device <NUM> shown in <FIG> with a back cover <NUM> being removed. The example shown in <FIG> does not fall under the scope of the claims. The main circuit board <NUM> is configured to integrate a control chip. The control chip may be, for example, an application processor (application processor, AP), a double data rate (double data rate, DDR) synchronous dynamic random access memory, a universal flash storage (universal flash storage, UFS), and the like. In some embodiments, the main circuit board <NUM> is electrically connected to both the display <NUM> and the side functional device <NUM>. The main circuit board <NUM> is configured to control the display screen <NUM> to display an image or a video and collect a fingerprint or an instruction inputted from the side functional device <NUM>.

The main circuit board <NUM> may be a rigid circuit board, a flexible printed circuit board, or a rigid-flex circuit board. The main circuit board <NUM> may be an FR-<NUM> dielectric board, a Rogers dielectric board, a mixed media board of FR-<NUM> and Rogers, or the like. Herein, FR-<NUM> represents a flame-resistant material grade, and the Rogers dielectric board is a high-frequency board.

The auxiliary circuit board <NUM> is configured to integrate electronic components such as an antenna (such as a <NUM> antenna) radio frequency front end, a universal serial bus (universal serial bus, USB) device, an oscillator, and the like. The auxiliary circuit board <NUM> is electrically connected to the main circuit board <NUM>.

Similarly, the auxiliary circuit board <NUM> may be a rigid circuit board, a flexible printed circuit board, or a rigid-flex circuit board. The auxiliary circuit board <NUM> may be an FR-<NUM> dielectric board, a Rogers dielectric board, a mixed media board of FR-<NUM> and Rogers, or the like.

A wireless communication module is integrated on the main circuit board <NUM> and/or the auxiliary circuit board <NUM>. The wireless communication module may provide a solution for wireless communication including a wireless local area network (wireless local area network, WLAN) (such as a wireless fidelity (wireless fidelity, Wi-Fi) network), Bluetooth (Bluetooth, BT), and a global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), a near field communication (near field communication, NFC) technology, an infrared (infrared, IR) technology, and the like to be applied to the electronic device <NUM>. The wireless communication module may be one or more devices integrating at least one communication processing module. The wireless communication module receives an electromagnetic wave through an antenna, performs frequency modulation and filtering processing on the electromagnetic wave signal, and sends the processed signal to the control chip. The wireless communication module may further receive a to-be-sent signal from the control chip, perform frequency modulation and amplification on the to-be-sent signal, and convert the signal into an electromagnetic wave through an antenna and radiate the signal. For example, the wireless communication module includes an NFC communication processing module, and an antenna of the NFC communication processing module is an NFC antenna. For another example, the wireless communication module includes a Bluetooth communication processing module, and an antenna of the Bluetooth communication processing module is a Bluetooth antenna. For another example, the wireless communication module includes a wireless local area network communication processing module, and an antenna of the wireless local area network communication processing module is a Wi-Fi antenna.

Still referring to <FIG> and <FIG>, a battery compartment 13a is arranged in the housing <NUM>. The battery compartment 13a is located between the main circuit board <NUM> and the auxiliary circuit board <NUM>. An opening of the battery compartment 13a faces the back cover <NUM>. In some embodiments, the battery compartment 13a is a groove provided on a surface of the middle plate <NUM> facing the back cover <NUM>. In some other embodiments, the middle plate <NUM> forms a bottom wall of the battery compartment, elements such as the main circuit board <NUM>, the auxiliary circuit board <NUM>, a speaker module (not shown in the figure), and the like form two opposite side walls of the battery compartment 13a, and the two sides of the border frame <NUM> form other two opposite side walls of the battery compartment 13a. In some other embodiments, when the electronic device does not include the middle plate <NUM>, the display screen <NUM> or the back cover <NUM> may further form the bottom wall of the battery compartment 13a, and elements such as the main circuit board <NUM>, the auxiliary circuit board <NUM>, the speaker module (not shown in the figure), the border frame <NUM>, and the like form the side wall of the battery compartment 13a.

The battery <NUM> is mounted in the battery compartment 13a. The battery <NUM> is configured to supply power to the electrical devices in the electronic device <NUM> such as the display screen <NUM>, the main circuit board <NUM>, the auxiliary circuit board <NUM>, and the like. The battery <NUM> includes, but is not limited to, a nickel-cadmium battery, a nickel-metal hydride battery, or a lithium-ion battery.

Referring to <FIG> and <FIG> is a schematic structural diagram of a battery <NUM> in the electronic device <NUM> shown in <FIG> and <FIG>. In the embodiment, the battery <NUM> includes a battery body <NUM> and a wrapping film <NUM>.

Referring to <FIG> and <FIG>, <FIG> is a three-dimensional view of a battery body <NUM> in the battery <NUM> shown in <FIG>, and <FIG> is an exploded view of the battery body <NUM> shown in <FIG>. In the embodiment, the battery body <NUM> includes a shell <NUM>, an electrolyte (not shown), and a bare battery core <NUM>.

The shell <NUM> is configured to encapsulate and protect the bare battery core <NUM> and the electrolyte, and a shape of the shell <NUM> includes but is not limited to a cuboid, a cylinder, a frustum of a cone, and the like. A material of the shell <NUM> includes, but is not limited to, a composite film and a steel shell. Specifically, the composite film includes at least three layers. A middle layer is a metal coating layer configured to isolate moisture. An outer layer is a plastic coating layer configured to prevent the permeation of air, especially oxygen. An inner layer is a sealing layer configured for sealing and preventing the electrolyte from corroding the metal coating layer. A material of the sealing layer is selected from at least one of polyethylene, polypropylene, esters of polyethylene or polypropylene, or ionomers of polyethylene or polypropylene. The polyethylene is selected from low density polyethylene, medium density polyethylene, or high density polyethylene. The polypropylene is selected from homo polypropylene, block polypropylene, or atactic polypropylene. A material of the metal coating layer is selected from at least one of metal, metal alloy, metal oxides, or ceramics, and the metal is selected from aluminum, iron, silver, copper, nickel, manganese, tin, titanium, zirconium, or vanadium. A material of the plastic coating layer is selected from at least one of polyamide resin, polyolefin, polycarbonate, or fluororesin. Further, a material of the shell <NUM> may be an aluminum plastic film. A middle layer of the aluminum plastic film is an aluminum layer configured to isolate moisture. An outer layer of the aluminum plastic film is made of polyamide, which is configured to prevent the permeation of air, especially oxygen. An inner layer of the aluminum plastic film is a polypropylene layer configured for sealing and preventing the electrolyte from corroding the aluminum layer.

The electrolyte is a carrier for transporting lithium ions in the battery body <NUM>. The electrolyte is generally prepared from raw materials such as high-purity organic solvents, electrolyte lithium salts, necessary additives, and the like in certain proportion under certain conditions.

Still referring to <FIG>, the bare battery core <NUM> includes a bare battery core body <NUM> and two tabs <NUM>. Specifically, the bare battery core body <NUM> is located in the shell <NUM>. One end of each tab <NUM> is connected to the bare battery core body <NUM>, and an other end of the tab passes through the shell <NUM>. One of the two tabs <NUM> is a positive tab and the other is a negative tab.

Still referring to <FIG>, the battery body <NUM> has a first surface 51a. The first surface 51a is a surface of the battery body <NUM> facing away from the bottom wall of the battery compartment 13a when the battery <NUM> is mounted in the electronic device <NUM> shown in <FIG>. The first surface 51a has an expansion region 51a2 and a non- expansion region 51a1 surrounding a periphery of the expansion region 51a2. As shown in <FIG>, a dashed box B divides the first surface 51a into the expansion region 51a2 and the non- expansion region 51a1. The region within the dashed box B is the expansion region 51a2. The region outside the dashed box B is the non- expansion region 51a1. A distance between an edge of the expansion region 51a2 and a peripheral edge of the first surface 51a is d, and d is greater than <NUM>, thereby defining the expansion region.

In order to define the specific position of the expansion region in the battery body <NUM>, the thickness of the battery body <NUM> is h, and d and h satisfy: d = (<NUM>*h + a) mm. h is the design thickness of the battery body <NUM>, that is, the thickness before expansion. h is greater than <NUM>, and a is greater than or equal to <NUM>. Specifically, a could be in a range of [<NUM>, <NUM>] mm.

The battery body <NUM> is at risk of expansion after long-term charging and discharging in use. Specifically, after the battery body <NUM> is expanded, the position of the maximum thickness of the battery body <NUM> is required to be located in the expansion region 51a2. According to the claimed invention, a is in a range of [<NUM>, <NUM>] mm. For example, the value of a may be <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, or <NUM>. By limiting a to be in a range of not greater than <NUM>, the expansion region 51a2 and the non-expansion region 51a1 can be reasonably arranged to ensure that when the battery body <NUM> is expanded, the position of the maximum thickness of the battery body <NUM> is located in the expansion region 51a2.

In order to further ensure that the position of the maximum thickness of the battery body <NUM> is located in the expansion region 51a2, a is in a range of (<NUM>, <NUM>] mm. For example, the value of a may be <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, or <NUM>. On this basis, in order to avoid damage to the whole electronic device caused by the expansion of the battery body <NUM>, a certain height of expansion space is usually reserved on a side in the electronic device <NUM> that the first surface 51a of the battery body <NUM> faces. Still referring to <FIG>, in addition to the first surface 51a, the battery body <NUM> further has a second surface 51b, a first end surface 51e, a second end surface 51f, and two side surfaces (that is, a first side surface 51c and a second side surface 51d). The second surface 51b is a surface of the battery body <NUM> facing the bottom wall of the battery compartment 13a when the battery <NUM> is mounted in the electronic device <NUM> shown in <FIG>. The first surface 51a, the second surface 51b, and the two side surfaces are arranged along a circumferential direction of the first end surface 51e.

Specifically, the first surface 51a and the second surface 51b are arranged opposite to each other in a thickness direction of the shell <NUM>, the first end surface 51e and the second end surface 51f are arranged opposite to each other in a length direction of the shell <NUM>, and the two side surfaces are arranged opposite to each other in a width direction of the shell <NUM>. The first side surface 51c, the second surface 51b, the second side surface 51d, and the first surface 51a are arranged in sequence and connected along a circumferential direction of the first end surface 51e.

The first end surface 51e has electrical connection terminals 51e1. In some embodiments, the tabs <NUM> in <FIG> protrude to outside of the shell <NUM> after passing through a wallboard of the shell <NUM> where the first end surface 51e is located, and parts of the tabs <NUM> located outside the shell <NUM> form the electrical connection terminals 51e1. Alternatively, the electrical connection terminals 51e1 are independent of the tabs <NUM> shown in <FIG>, and the parts of the tabs <NUM> located outside the shell <NUM> are connected to the electrical connection terminals 51e1.

On the basis of the above embodiment, referring to <FIG> again, the wrapping film <NUM> is wrapped and fixed to the surface of the battery body <NUM> by gluing, or the like. The wrapping film <NUM> can protect the battery body <NUM>. On this basis, optionally, still referring to <FIG>, a part of the wrapping film <NUM> located on the first surface 51a has a tearable portion <NUM>. The tearable portion <NUM> and the first surface 51a may not be glued together, or the tearable portion <NUM> is raised relative to other parts of the wrapping film <NUM> located on the first surface 51a. In this way, when the battery <NUM> is located in the battery compartment 13a, the user can easily take out the battery <NUM> from the battery compartment 13a by pulling the tearable portion <NUM> to drive the battery <NUM>, so as to facilitate the use of the user.

On the basis of this embodiment, in order to ensure the reliability of taking out the battery <NUM>, optionally, the wrapping film <NUM> is wrapped around at least the first surface 51a, the second surface 51b, one end surface (such as the first end surface 51e or the second end surface 51f) connected between the first surface 51a and the second surface 51b, or a side surface (such as the first side surface 51c or the second side surface 51d). In the embodiment shown in <FIG>, the wrapping film <NUM> is wrapped around the first surface 51a, the first side surface 51c, the second surface 51b, and the second side surface 51d.

Specifically, the wrapping film <NUM> includes the tearable portion <NUM>, a first portion <NUM>, a second portion <NUM>, a third portion <NUM>, a fourth portion <NUM>, and a fifth portion <NUM>. The first portion <NUM>, the second portion <NUM>, the third portion <NUM>, the fourth portion <NUM>, and the fifth portion <NUM> are connected successively in the circumferential direction of the first end surface 51e. The first portion <NUM> is wrapped around the first surface 51a. The tearable portion <NUM> is connected to an end of the first portion <NUM> away from the second portion <NUM>. The second portion <NUM> is wrapped around the first side surface 51c. The third portion <NUM> is wrapped around the second surface 51b. The fourth portion <NUM> is wrapped around the second side surface 51d. The fifth portion <NUM> is wrapped around the first surface 51a.

In some other embodiments, referring to <FIG> is a schematic structural diagram of a battery <NUM> according to some other embodiments of this application. In the embodiment, the wrapping film <NUM> includes a tearable portion <NUM>, a first portion <NUM>, a second portion <NUM>, and a third portion <NUM>. The first portion <NUM>, the second portion <NUM>, and the third portion <NUM> are connected successively in the circumferential direction of the first end surface 51e. The first portion <NUM> is wrapped around the first surface 51a, and the tearable portion <NUM> is connected to an end of the first portion <NUM> away from the second portion <NUM>. The second portion <NUM> is wrapped around one of the first side surface 51c and the second side surface 51d. In the embodiment shown in <FIG>, the second portion <NUM> is wrapped around the first side surface 51c. The third portion <NUM> is wrapped around the second surface 51b.

Certainly, it may be understood that the wrapping film <NUM> may further include the first portion <NUM>, the second portion <NUM>, the third portion <NUM>, and the fourth portion <NUM>.

In combination with the wrapping film <NUM> described in any one of the above embodiments, in order to ensure the protective performance and/or tearing performance of the wrapping film <NUM>, a part of the wrapping film <NUM> is inevitably wrapped and fixed to the expansion region 51a2 of the first surface 51a. For example, referring to <FIG>, a part of the first portion <NUM> and a part of the fifth portion <NUM> of the wrapping film <NUM> are wrapped around the expansion region 51a2. For another example, referring to <FIG>, the part of the first portion <NUM> of the wrapping film <NUM> is wrapped around the expansion region 51a2.

On the basis of the above embodiments, when the battery <NUM> shown in <FIG> or <FIG> is applied to the electronic device <NUM> shown in <FIG>, some electrical connectors inevitably pass through the expansion region 51a2 of the first surface 51a due to the orientation limitation between the elements connected on two ends. The electrical connector may be an electrical connector configured to electrically connect the main circuit board <NUM> to the side functional device <NUM>, or may be an electrical connector configured to electrically connect the main circuit board <NUM> to the display <NUM>, and may further be an electrical connector configured to electrically connect the main circuit board <NUM> to the auxiliary circuit board <NUM>. The construction form of the electrical connector <NUM> includes, but is not limited to, a flexible printed circuit board (flexible printed circuit board, FPC) and a structure formed by connecting a plurality of wires through a flexible structure.

One or more electrical connectors <NUM> may be arranged. In some examples, a plurality of electrical connectors <NUM> are respectively configured to connect different elements. Optionally, two electrical connectors <NUM> may be arranged. One of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the side functional device <NUM>, and the other of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the auxiliary circuit board <NUM>. Alternatively, one of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the side functional device <NUM>, and the other of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the display <NUM>. Alternatively, one of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the display <NUM>, and the other of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the auxiliary circuit board <NUM>. Optionally, three electrical connectors <NUM> may be arranged. One of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the side functional device <NUM>, another of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the auxiliary circuit board <NUM>, and the remaining one of the electrical connectors <NUM> is configured to connect the main circuit board <NUM> to the display <NUM>. Certainly, it may be understood that the electrical connector <NUM> is not limited to a connecting structure for realizing a wired electrical connection between two elements. The electrical connector <NUM> may further be a radiator of an antenna for implementing wireless signal transmission and reception of the wireless communication module described above. For example, the electrical connector <NUM> is a radiator of the above NFC antenna. For another example, the electrical connector <NUM> is a radiator of the above Wi-Fi antenna.

In some examples not falling under the scope of the independent claim and only provided for illustrative purposes, referring to <FIG> is a schematic diagram of relative positions of the battery <NUM> shown in <FIG> and an electrical connector <NUM> configured to electrically connect a main circuit board <NUM> to a side functional device <NUM> in the electronic device <NUM> shown in <FIG>. In this embodiment, the electrical connector <NUM> passes through the expansion region 51a2 of the first surface 51a. Referring to <FIG> is a schematic structural cross-sectional view of the structure shown in <FIG> taken along line A-A. The part of the electrical connector <NUM> passing through the expansion region 51a2 overlaps with the part of the wrapping film <NUM> wrapped around the expansion region 51a2. A height H of the expansion space that needs to be reserved in the electronic device <NUM> (a dashed box M in <FIG> is the position of the expansion space corresponding to the expansion region 51a2) needs to be greater than or equal to a sum of a maximum height h1 of an expanded protrusion (a protruding position of the position indicated by dashed lines N in <FIG>) of the battery body <NUM>, a thickness h2 of the electrical connector <NUM>, and a thickness h3 of the wrapping film <NUM>, resulting in a relatively large thickness of the reserved expansion space in the electronic device <NUM> and a relatively large thickness of the electronic device <NUM>, which is not conducive to the thinning of the electronic device <NUM>.

In order to solve the technical problem that the thickness of the electronic device <NUM> is relatively thick, different from the schematic diagram of the relative positions of the electrical connector <NUM> and the battery <NUM> shown in <FIG> and <FIG>, referring to <FIG> and <FIG>, <FIG> is another schematic diagram of relative positions of the electrical connector <NUM> and the battery <NUM> in the electronic device <NUM> shown in <FIG>, and <FIG> is a schematic structural cross-sectional view of the structure shown in <FIG> taken along line C-C. In this embodiment, at least part of the electrical connector <NUM> is located on the first surface 51a, and the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the wrapping film <NUM> in the expansion region 51a2. Herein, a part of the wrapping film <NUM> may be located in the expansion region 51a2, or the wrapping film <NUM> may not be located in the expansion region 51a2 at all. A part of the electrical connector <NUM> may be located in the expansion region 51a2, or the electrical connector <NUM> may not be located in the expansion region 51a2 at all, as long as it is ensured that the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the wrapping film <NUM> in the expansion region 51a2.

Herein, the part of the electrical connector <NUM> located on the first surface 51a may be in contact with the first surface 51a, or may be spaced apart from the first surface, or may be partly in contact with the first surface and partly spaced apart from the first surface.

In the embodiment of this application, since the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the wrapping film <NUM> in the expansion region 51a2, an overall thickness of the battery and the electrical connector <NUM> corresponding to a position of the expansion region 51a2 will not be increased. Therefore, there is no need to increase the thickness of the expansion space, thereby facilitating reduction in the thickness of the electronic device <NUM>. In this way, a thin electronic device <NUM> can be achieved at least to a certain extent.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expansion region 51a2, in the embodiments shown in <FIG> and <FIG>, the electrical connector <NUM> is electrically connected between the main circuit board <NUM> and the side functional device <NUM>. The main circuit board <NUM> may be located on a side of the battery compartment 13a adjacent to the first end surface 51e, and the side functional device <NUM> directly faces the second side surface 51d.

Specifically, still referring to <FIG> and <FIG>, a part of the first surface 51a located between the expansion region 51a2 and the first end surface 51e is a first non-expansion region 51a11, and a part of the first surface 51a located between the expansion region 51a2 and the second side surface 51d is a second non-expansion region 51a12. The second non-expansion region 51a12 is connected to the first non-expansion region 51a11. A part of the first surface 51a located between the expansion region 51a2 and the first side surface 51c is a third non-expansion region 51a13. The third non-expansion region 51a13 is connected to the first non-expansion region 51a11.

Still referring to <FIG>, the electrical connector <NUM> is arranged adjacent to the second side surface 51d. The electrical connector <NUM> includes a first sub-portion <NUM>, a second sub-portion <NUM>, and a third sub-portion <NUM>. The third sub-portion <NUM> is completely located in the expansion region 51a2. An end of the first sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the first sub-portion <NUM> is located in the first non-expansion region 51a11, and an other part of the first sub-portion <NUM> extends away from the first end surface 51e and is connected to the main circuit board <NUM>. The first sub-portion <NUM> does not overlap with the wrapping film <NUM> in the first non-expansion region 51a11. An end of the second sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the second sub-portion <NUM> is located in the second non-expansion region 51a12, and an other part of the second sub-portion <NUM> extends away from the second side surface 51d and is connected to the side functional device <NUM>.

The wrapping film <NUM> includes a tearable portion <NUM> and a first portion <NUM> to a fifth portion <NUM>. The first portion <NUM> is wrapped around the first surface 51a. A part of the first portion <NUM> is located in the third non-expansion region 51a13, and an other part of the first portion is located in the expansion region 51a2. The tearable portion <NUM> is connected to an end of the first portion <NUM> away from the second portion <NUM>, and the tearable portion <NUM> is located in the expansion region 51a2. The second portion <NUM> is wrapped around the first side surface 51c. The third portion <NUM> is wrapped around the second surface 51b. The fourth portion <NUM> is wrapped around the second side surface 51d. The fifth portion <NUM> is wrapped around the first surface 51a. A part of the fifth portion <NUM> is located in the second non-expansion region 51a12, and an other part of the fifth portion is located in the expansion region 51a2.

The second sub-portion <NUM> overlaps with the fifth portion <NUM> in the second non-expansion region 51a12. However, since the second sub-portion <NUM> deviates from the expansion region 51a2, a position where the second sub-portion <NUM> and the fifth portion <NUM> overlap in the second non-expansion region 51a12 is not a position having the maximum thickness of the battery <NUM> after expansion, which will not affect the thin and light design of the electronic device <NUM>. In addition, a wrapping area of the wrapping film <NUM> can also be increased, and the protective performance of the battery body <NUM> can be improved.

A second notch <NUM> is provided at a position of the fifth portion <NUM> corresponding to the electrical connector <NUM>. Specifically, the second notch <NUM> is located in the expansion region 51a2, and the second notch <NUM> is configured to give way to the third sub-portion <NUM> located in the expansion region 51a2. Therefore, through the arrangement of the notch, the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the wrapping film <NUM> in the expansion region 51a2.

In the embodiment, the side functional device <NUM> may be a side fingerprint recognition module and/or a side button. When the side functional device <NUM> is a side button and a side fingerprint recognition module, the side button and the side fingerprint recognition module may share the electrical connector <NUM>.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expansion region 51a2, in some other embodiments, referring to <FIG> and <FIG>, <FIG> is still another schematic diagram of relative positions of the electrical connector <NUM> and the battery <NUM> in the electronic device <NUM> shown in <FIG>, and <FIG> is a schematic structural cross-sectional view of the structure shown in <FIG> taken along line D-D. In the embodiment, the electrical connector <NUM> is electrically connected between the main circuit board <NUM> and the side functional device <NUM>. The main circuit board <NUM> may be located on the side of the battery compartment 13a adjacent to the first end surface 51e, and the side functional device <NUM> directly faces the second side surface 51d.

The wrapping film <NUM> includes a tearable portion <NUM> and a first portion <NUM> to a third portion <NUM>. The first portion <NUM> is wrapped around the first surface 51a. A part of the first portion <NUM> is located in the third non-expansion region 51a13, and an other part of the first portion is located in the expansion region 51a2. The tearable portion <NUM> is connected to an end of the first portion <NUM> away from the second portion <NUM>, and the tearable portion <NUM> is located in the expansion region 51a2. The second portion <NUM> is wrapped around the first side surface 51c. The third portion <NUM> is wrapped around the second surface 51b. In this way, the wrapping film <NUM> is not arranged in the second non-expansion region 51a12 and the expansion region 51a2 adjacent to the second non-expansion region 51a12, thereby causing the part of the electrical connector <NUM> located on the first surface 51a not to overlap with the wrapping film <NUM> on the first surface 51a.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expansion region 51a2, in some other embodiments, referring to <FIG> and <FIG>, <FIG> is yet another schematic diagram of relative positions of the electrical connector <NUM> and the battery <NUM> in the electronic device <NUM> shown in <FIG>, and <FIG> is a schematic structural cross-sectional view of the structure shown in <FIG> taken along line E-E. In this embodiment, the electrical connector <NUM> is connected between the main circuit board <NUM> and the side functional device <NUM>. The main circuit board <NUM> is located on the side of the battery compartment 13a adjacent to the first end surface 51e, and the side functional device <NUM> directly faces the first side surface 51c. In this way, the side functional device <NUM> is arranged at a relatively small distance from the main circuit board <NUM>, which is beneficial to shorten the length of the electrical connector <NUM>.

Specifically, a part of the first surface 51a located between the expansion region 51a2 and the first end surface 51e is a first non-expansion region 51a11, and a part of the first surface 51a located between the expansion region 51a2 and the second side surface 51d is a second non-expansion region 51a12. The second non-expansion region 51a12 is connected to the first non-expansion region 51a11. A part of the first surface 51a located between the expansion region 51a2 and the first side surface 51c is a third non-expansion region 51a13. The third non-expansion region 51a13 is connected to the first non-expansion region 51a11.

Still referring to <FIG>, the electrical connector <NUM> is arranged adjacent to the first side surface 51c, and includes a first sub-portion <NUM>, a second sub-portion <NUM>, and a third sub-portion <NUM>. The third sub-portion <NUM> is completely located in the expansion region 51a2. An end of the first sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the first sub-portion <NUM> is located in the first non-expansion region 51a11, and an other part of the first sub-portion <NUM> extends away from the first end surface 51e and is connected to the main circuit board <NUM>. The first sub-portion <NUM> does not overlap with the wrapping film <NUM> in the first non-expansion region 51a11. An end of the second sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the second sub-portion <NUM> is located in the third non-expansion region 51a13, and an other part of the second sub-portion <NUM> extends away from the first side surface 51c and is connected to the side functional device <NUM>.

The second sub-portion <NUM> overlaps with the first portion <NUM> in the third non-expansion region 51a13. However, since the second sub-portion <NUM> deviates from the expansion region 51a2, a position where the second sub-portion <NUM> and the first portion <NUM> overlap in the third non-expansion region 51a13 is not a position having the maximum thickness of the battery <NUM> after expansion, which will not affect the thin and light design of the electronic device <NUM>.

A first notch <NUM> is provided at a position of the first portion <NUM> corresponding to the electrical connector <NUM>. Specifically, the first notch <NUM> is located in the expansion region 51a2, and the first notch <NUM> is configured to give way to the third sub-portion <NUM> located in the expansion region 51a2. Therefore, through the arrangement of the notch, the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the wrapping film <NUM> in the expansion region 51a2.

The tearable portion <NUM> has an avoidance notch <NUM>. The avoidance notch <NUM> is configured to give way to the third sub-portion <NUM> located in the expansion region 51a2. Therefore, through the arrangement of the avoidance notch <NUM>, the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the tearable portion <NUM> in the expansion region 51a2, so as not to occupy the thickness of the expansion region.

In the embodiment, the side functional device <NUM> may be a side fingerprint recognition module and/or a side button. When the side functional device <NUM> is a side button and a side fingerprint recognition module, the side button and the side fingerprint recognition module share the electrical connector <NUM>.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expansion region 51a2, in some other embodiments, referring to <FIG> and <FIG>, <FIG> is another schematic diagram of relative positions of the electrical connector <NUM> and the battery <NUM> in the electronic device <NUM> shown in <FIG>, and <FIG> is a schematic structural cross-sectional view of the structure shown in <FIG> taken along line F-F. In the embodiment, the electrical connector <NUM> is connected between the main circuit board <NUM> and the side functional device <NUM>. The main circuit board <NUM> is located on the side of the battery compartment 13a adjacent to the first end surface 51e, and the side functional device <NUM> directly faces the first side surface 51c. In this way, the side functional device <NUM> is arranged at a relatively small distance from the main circuit board <NUM>, which is beneficial to shorten the length of the electrical connector <NUM>.

Still referring to <FIG>, the electrical connector <NUM> is arranged adjacent to the first side surface 51c, and includes a first sub-portion <NUM>, a second sub-portion <NUM>, and a third sub-portion <NUM>. The third sub-portion <NUM> is completely located in the expansion region 51a2. An end of the first sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the first sub-portion <NUM> is located in the first non-expansion region 51a11, and an other part of the first sub-portion <NUM> extends away from the first end surface 51e and is connected to the main circuit board <NUM>. An end of the second sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the second sub-portion <NUM> is located in the third non-expansion region 51a13, and an other part of the second sub-portion <NUM> extends away from the first side surface 51c and is connected to the side functional device <NUM>.

The wrapping film <NUM> includes a tearable portion <NUM> and a first portion <NUM> to a third portion <NUM>. The first portion <NUM> is wrapped around the first surface 51a. A part of the first portion <NUM> is located in the third non-expansion region 51a13, and an other part of the first portion is located in the expansion region 51a2. The tearable portion <NUM> is connected to an end of the first portion <NUM> away from the second portion <NUM>, and the tearable portion <NUM> is located in the expansion region 51a2. The second portion <NUM> is wrapped around the first side surface 51c. The third portion <NUM> is wrapped around the second surface 51b.

The second sub-portion <NUM> overlaps with the first portion <NUM> in the third non-expansion region 51a13. However, since the second sub-portion <NUM> deviates from the expansion region 51a2, a position where the second sub-portion <NUM> and the first portion <NUM> overlap is not a position having the maximum thickness of the battery <NUM> after expansion, which will not affect the thin and light design of the electronic device <NUM>.

A first notch <NUM> is provided at a position of the first portion <NUM> corresponding to the electrical connector <NUM>. Specifically, the first notch <NUM> is located in the expansion region, and the first notch <NUM> is configured to give way to the third sub-portion <NUM> located in the expansion region 51a2. Therefore, through the arrangement of the notch, the part of the electrical connector <NUM> located on the first surface 51a does not overlap with the wrapping film <NUM> in the expansion region 51a2.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expanded region 51a2, in some other embodiments, referring to <FIG> and <FIG>, <FIG> is another schematic diagram of relative positions of the electrical connector <NUM> and the battery <NUM> in the electronic device <NUM> shown in <FIG>, and <FIG> is a schematic structural cross-sectional view of the structure shown in <FIG> taken along line G-G. In the embodiment, the electrical connector <NUM> is connected between the main circuit board <NUM> and the auxiliary circuit board <NUM>. The main circuit board <NUM> is located on the side of the battery compartment 13a adjacent to the first end surface 51e, and the auxiliary circuit board <NUM> is located on a side of the battery compartment 13a adjacent to the second end surface 51f.

Specifically, a part of the first surface 51a located between the expansion region 51a2 and the first end surface 51e is a first non-expansion region 51a11, and a part of the first surface 51a located between the expansion region 51a2 and the second side surface 51d is a second non-expansion region 51a12. The second non-expansion region 51a12 is connected to the first non-expansion region 51a11. A part of the first surface 51a located between the expansion region 51a2 and the first side surface 51c is a third non-expansion region 51a13. The third non-expansion region 51a13 is connected to the first non-expansion region 51a11. A part of the first surface 51a located between the expansion region 51a2 and the second end surface 51f is a fourth non-expansion region 51a14. Two ends of the fourth non-expansion region 51a14 are respectively connected to the second non-expansion region 51a12 and the third non-expansion region 51a13.

The wrapping film <NUM> includes a tearable portion <NUM> and a first portion <NUM> to a fifth portion <NUM>. The first portion <NUM> is wrapped around the first surface 51a. A part of the first portion <NUM> is located in the third non-expansion region 51a13, and an other part of the first portion is located in the expansion region 51a2. The part of the first portion <NUM> located in the expansion region 51a2 is connected to the tearable portion <NUM>, and the second portion <NUM> is wrapped around the first side surface 51c. The third portion <NUM> is wrapped around the second surface 51b. The fourth portion <NUM> is wrapped around the second side surface 51d. The fifth portion <NUM> is wrapped around the first surface 51a. A part of the fifth portion <NUM> is located in the second non-expansion region 51a12, and an other part of the fifth portion is located in the expansion region 51a2.

The electrical connector <NUM> is located between the first portion <NUM> and the fifth portion <NUM>, and is arranged adjacent to the second side surface 51d. In this way, the electrical connector <NUM> can be closer to the non-expansion region 51a2, thereby avoiding the center of the expansion region 51a2, and reducing the thickness of the electronic device <NUM>.

The electrical connector <NUM> includes a first sub-portion <NUM>, a second sub-portion <NUM>, and a third sub-portion <NUM>. The third sub-portion <NUM> is completely located in the expansion region 51a2. An end of the first sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the first sub-portion <NUM> is located in the first non-expansion region 51a11, and an other part of the first sub-portion <NUM> extends away from the first end surface 51e and is connected to the main circuit board <NUM>. An end of the second sub-portion <NUM> is connected to the third sub-portion <NUM>, a part of the second sub-portion <NUM> is located in the fourth non-expansion region 51a14, and an other part of the second sub-portion <NUM> extends away from the second end surface 51f and is connected to the auxiliary circuit board <NUM>.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expansion region 51a2, in some other embodiments, referring to <FIG> is a schematic structural diagram of a battery <NUM> in an electronic device <NUM> according to some other embodiments of this application. A difference between the structure of the wrapping film <NUM> in the embodiment shown in <FIG> and the structure of the wrapping film <NUM> shown in <FIG> is that a second notch <NUM> is provided at a position of the fifth portion <NUM> corresponding to the electrical connector <NUM>. Specifically, a part of the second notch <NUM> is located in the expansion region 51a2, and an other part of the second notch is located in the second non-expansion region 51a12. The second notch <NUM> is configured to give way to the third sub-portion <NUM> located in the expansion region 51a2 and the second sub-portion <NUM> located in the second non-expansion region 51a12. Therefore, the second notch <NUM> extends to an edge of the fifth portion <NUM> in a direction from the fifth portion <NUM> to the fourth portion <NUM>. In this way, the overall thickness of the battery <NUM> and the electrical connector <NUM> is not increased, thereby facilitating reduction in the thickness of the electronic device <NUM>. In this way, thinning of the electronic device <NUM> can be achieved at least to a certain extent.

Specifically, in order to further save the material and improve the avoidance effect of the electrical connector <NUM>, the fourth portion <NUM> has formed thereon a second communication notch <NUM> extending through the fourth portion <NUM> in a thickness direction of the fourth portion <NUM>. The second communication notch <NUM> is in communication with the second notch <NUM>. The second communication notch <NUM> may be configured to give way to the part of the electrical connector <NUM> on the side that the fourth portion <NUM> faces.

In order to prevent the part of the electrical connector <NUM> located on the first surface 51a and the wrapping film <NUM> from overlapping in the expansion region 51a2, in some other embodiments, referring to <FIG> is a schematic structural diagram of a battery <NUM> in an electronic device <NUM> according to some other embodiments of this application. A difference between the structure of the wrapping film <NUM> in the embodiment shown in <FIG> and the structure of the wrapping film <NUM> shown in <FIG> is that a first notch <NUM> is provided at a position of the first portion <NUM> corresponding to the electrical connector <NUM>. Specifically, a part of the first notch <NUM> is located in the expansion region 51a2, and an other part of the first notch is located in the third non-expansion region 51a13. The first notch <NUM> is configured to give way to the third sub-portion <NUM> located in the expansion region 51a2 and the second sub-portion <NUM> located in the third non-expansion region 51a13. Therefore, the first notch <NUM> extends to an edge of the first portion <NUM> in a direction from the first portion <NUM> to the second portion <NUM>. In this way, the overall thickness of the battery <NUM> and the electrical connector <NUM> is not increased, thereby facilitating reduction in the thickness of the electronic device <NUM>. In this way, thinning of the electronic device <NUM> can be achieved at least to a certain extent.

Specifically, in order to further save the material and improve the avoidance effect of the electrical connector <NUM>, the second portion <NUM> has formed thereon a first communication notch <NUM> extending through the second portion <NUM> in a thickness direction of the second portion <NUM>. The first communication notch <NUM> is in communication with the first notch <NUM>. The first communication notch <NUM> may be configured to give way to a part of the electrical connector <NUM> on the side that the second portion <NUM> faces.

On the basis of any one of the above embodiments, the electronic device <NUM> may further include a separator (not shown in the figure). The separator is located between the first surface 51a and the surface of the housing <NUM> opposite to the first surface 51a, that is, the separator is located between the first surface 51a and the back housing <NUM>. A giving-way notch is formed on the part of the wrapping film <NUM> wrapped around the first surface 51a, and the giving-way notch is configured to give way to the separator.

Optionally, at least part of the giving-way notch may be defined by at least one of the first notch <NUM>, the second notch <NUM>, or the avoidance notch <NUM>. For example, the first notch <NUM> and the avoidance notch <NUM> may define the giving-way notch. For another example, a part of the first notch <NUM> and the entire avoidance notch <NUM> define the giving-way notch. For another example, the second notch <NUM> defines the giving-way notch. For another example, the second notch <NUM> defines a part of the giving-way notch. Certainly, it may be understood that the giving-way notch may further be a notch formed on a part of the wrapping film <NUM> wrapped around the first surface 51a and independent of all of the first notch <NUM>, the second notch <NUM>, and the avoidance notch <NUM>.

For example, the separator may be a heat sink (for example, a graphite sheet). The heat sink can transfer the heat generated during operation of the battery <NUM> to the back cover <NUM>, thereby improving the heat dissipation effect of the electronic device.

For another example, the separator may be mylar or foam, and the electrical connector <NUM> is attached to the housing by the separator, thereby improving the reliability of the connection between the electrical connector <NUM> and the housing <NUM>, prolonging the service life of the electrical connector <NUM>, and ensuring the operation reliability of the electronic device <NUM>.

In the descriptions of this specification, the described specific features, structures, materials, or characteristics may be combined in a proper manner in any one or more of the embodiments or examples.

Claim 1:
An electronic device (<NUM>), comprising:
a housing (<NUM>), having a battery compartment (13a) arranged therein;
a battery (<NUM>), mounted in the battery compartment (13a) and comprising a battery body (<NUM>) and a wrapping film (<NUM>) wrapped around a surface of the battery body (<NUM>), wherein the battery body (<NUM>) has a first surface (51a); and
an electrical connector (<NUM>), having at least a part located on the first surface (51a), characterized in that
the first surface (51a) has an expansion region (51a2) and a non-expansion region (51a1) surrounding a periphery of the expansion region (51a2);
a distance between each edge of the expansion region (51a2) and a peripheral edge of the first surface (51a) adjacent to the respective edge of the expansion region (51a2) is d, and d is d = (<NUM>.<NUM>*h + a) mm, wherein h is a thickness of the battery body and a is in a range of [<NUM>, <NUM>] mm;
and
the part of the electrical connector (<NUM>) located on the first surface (51a) does not overlap with the wrapping film (<NUM>) in the expansion region (51a2).