Battery having electrode tabs and electronic device having same

According to various embodiments of the present invention, an electronic device may comprise: a housing, which comprises a first plate, a second plate facing the opposite direction to the first plate, and a side surface member surrounding a space between the first plate and the second plate; a display viewed through at least a part of the first plate; a battery, which is disposed in the housing and comprises a battery cell comprising multiple cell parts, at least some of which are arranged to overlap each other when viewed from above one surface of the battery, and multiple conductive members arranged so as to overlap each other at the edges of the multiple cell parts when viewed from above the one surface; a battery protection circuit joined to the multiple conductive members; and a processor operationally connected to the display and the battery. Various other embodiments may also be possible.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a National Phase Entry of PCT International Application No. PCT/KR2019/005543, which was filed on May 14, 2019, and claims a priority to Korean Patent Application No. 10-2018-0065381, which was filed on Jun. 7, 2018, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

Various embodiments of the disclosure relate to arrangement of electrode tabs of a battery of an electronic device.

BACKGROUND ART

A secondary battery of an electronic device may include, according to the shape of the battery case thereof, a cylindrical battery having an electrode assembly contained in a cylindrical metal can, an angled battery having an electrode assembly contained in an angled metal can, or a pouch-type battery having an electrode assembly contained in a pouch-type case made of an aluminum laminate sheet.

In addition, battery electrode assemblies may include a jelly-roll type and a stacked type. A jelly-roll type electrode assembly may be manufactured by coating a metal foil used as a collector with an electrode active material or the like, fabricating electrodes through pressing and slitting processes, spacing positive and negative electrodes apart from each other by using a separator, and winding the same helically.

A stacked-type electrode assembly is manufactured by spacing multiple positive and negative electrodes from each other by using separators and successively laminating the same, and is applicable both to an angled battery and to a pouch-type battery. In addition, it is also possible to use an electrode assembly that is a hybrid of the jelly-rolling type and stack-type.

DISCLOSURE OF INVENTION

Technical Problem

Electronic devices employ battery-integrated large-capacity pouch-type batteries, instead of exchangeable batteries, for the sake of compactness and slimness. In the case of a large-capacity pouch-type cattery, the battery performance may vary according to the manner in which tabs are configured. Therefore, in order to utilize the battery performance to the largest extent, the configuration of tabs connected to positive and negative electrodes may be one of important factors.

According to various embodiments of the disclosure, an electronic device may include a battery cell having an efficient multi-tab configuration such that the maximum battery performance can be utilized, and an increase in the thickness of the multi-tab can be decreased.

According to various embodiments of the disclosure, an electronic device may have tabs disposed in multiple positions in connection with a single cell such that, when electric power is used, a uniform chemical reaction occurs in the cell, thereby improving the battery stability while minimizing a thickness increase.

Solution to Problem

An electronic device according to various embodiments of the disclosure may include: a housing including a first plate, a second plate facing an opposite side to the first plate, and a side member surrounding a space between the first plate and the second plate, and connected to the second plate or integrally formed with the second plate; a display viewed through at least a portion of the first plate; a battery disposed in the housing, the battery including a battery cell including a plurality of cell parts disposed such that at least portions of the plurality of cell parts overlap each other when viewed from the top of one surface of the battery, and a plurality of conductive members disposed such that the plurality of conductive members do not overlap each other at peripheries of the plurality of cell parts when viewed from the top of one surface of the battery; a battery protection circuit joined to the plurality of conductive members; and a processor operatively connected to the display and the battery.

An electronic device according to various embodiments of the disclosure may include: a housing including a first plate, a second plate facing an opposite side of the first plate, and a side member surrounding a space between the first plate and the second plate, and connected to the second plate or integrally formed with the second plate; a display disposed in the space and visually exposed through at least a portion of the first plate; and a battery disposed in the space to be parallel to the first plate, the battery including a battery cell including a plurality of cell parts disposed such that at least portions of the plurality of cell parts overlap each other when the first plate is viewed from the top, and a plurality of electrode tabs protruding to the outside from at least two cell parts, among the plurality of cell parts, wherein one or more electrode tabs, among the plurality of electrode tabs protruding from the at least two cell parts, may be disposed to be at least partially parallel to each other when the first plate is viewed from the top.

Advantageous Effects of Invention

A battery according to the disclosure uses multiple tabs so as to improve the current uniformity inside the battery cell and to reduce the current movement path, thereby reducing the resistance, such that the maximum battery performance can be utilized, and an increase in the thickness of the multi-tab can be minimized.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, various embodiments of the disclosure will be described with reference to the accompanying drawings. However, it should be appreciated that these are not intended to limit the disclosure to particular embodiments and the disclosure includes various changes, equivalents, and/or alternatives for the embodiments of the disclosure. With regard to the description of the drawings, similar reference numerals may be used to designate similar or relevant elements.

An electronic device according to various embodiments of the disclosure may, for example, include at least one of a smart phone, a tablet personal computer (PC), a mobile phone, a video phone, an electronic book reader (e-book reader), a desktop PC, a laptop PC, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP), a MPEG-1 audio layer-3 (MP3) player, a mobile medical device, a camera, and a wearable device (e.g., smart glasses, head-mounted device (HMD)), electronic clothing, electronic bracelet, electronic necklace, electronic accessory (appcessory), electronic tattoo, smart mirror, or smart watch).

FIG.1is a perspective view illustrating a front surface of a mobile electronic device according to an embodiment.FIG.2is a perspective view illustrating a rear surface of the mobile electronic device according to an embodiment.

Referring toFIGS.1and2, an electronic device100according to an embodiment may include a housing110including a first surface (or a front surface)110A, a second surface (or a rear surface)110B, and a side surface110C surrounding a space between the first surface110A and the second surface110B. In another embodiment (not illustrated), the housing may refer to a structure that defines some of the first surface110A, the second surface110B, and the side surface110C ofFIG.1. According to an embodiment, the first surface110A may be defined by a front plate102(e.g., a glass plate or a polymer plate including various coating layers), at least a portion of which is substantially transparent. The second surface110B may be defined by a substantially opaque rear plate111. The rear plate111, for example, may be formed of coated or colored glass, ceramics, a polymer, a metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two thereof. The side surface110C may be coupled to the front plate102and the rear plate111, and may be defined by a side bezel structure (or ‘a side member’)118including a metal and/or a polymer. In some embodiments, the rear plate111and the side bezel structure118may be integrally formed and may include the same material (e.g., a metallic material such as aluminum).

In the illustrated embodiment, the front plate102may include two first areas110D that are deflected from the first surface110A toward the rear plate111and extend seamlessly, at opposite ends of a long edge of the front plate102. In the illustrated embodiment (seeFIG.2), the rear plate111may include two second areas110E that are deflected from the second surface110B toward the front plate102and extend seamlessly, at opposite ends of a long edge of the rear plate111. In some embodiments, the front plate102(or the rear plate111) may include only one of the first areas110D (or the second areas110E). In other embodiments, some of the first areas110D or the second areas110E may not be included. In the embodiments, when viewed from a side of the electronic device100, the side bezel structure118may have a first thickness (width) on a side surface, on which neither the first areas110D nor the second areas110E are included, and may have a second thickness that is smaller than the first thickness on a side surface, on which the first areas110D or the second areas110E are included.

According to an embodiment, the electronic device100may include at least one of a display101, audio modules103,107,114, sensor modules104,116, and119, camera modules105,112, and113, a key input device117, a light emitting element106, and connector holes108and109. In some embodiments, at least one (e.g., the key input device117or the light emitting element106) of the elements may be omitted from the electronic device100or another component may be additionally included in the electronic device100.

The display101, for example, may be visually exposed through a corresponding portion of the front plate101. In some embodiments, at least a portion of the display101may be exposed through the front plate102defining the first surface110A, and the first areas110D of the side surface110C. In some embodiments, corners of the display101may have a shape that is substantially the same as the adjacent outer shape of the front plate102. In other embodiments (not illustrated), in order to expand the area, by which the display101is exposed, the intervals between the outskirts of the display101and the outskirts of the front plate102may be substantially the same.

In other embodiments (not illustrated), a portion of the screen display area of the display101may have a recess or an opening, and may include at least one of the audio module114, the sensor module104, the camera module105, and the light emitting element106, which are aligned with the recess or the opening. In other embodiments (not illustrated), at least one of the audio module114, the sensor module104, the camera module105, the fingerprint sensor116, and the light emitting element106may be included on the rear surface of the screen display area of the display101. In other embodiments (not illustrated), the display101may be coupled to or be disposed to be adjacent to a touch detection circuit, a pressure sensor that may measure the strength (the pressure) of a touch, and/or a digitizer that detects a stylus pen of a magnetic field type. In some embodiments, at least a portion of the sensor modules104and119and/or at least a portion of the key input device117may be disposed in the first areas110D and/or the second areas110E.

The audio modules103,107,114may include a microphone hole103and speaker holes107and114. A microphone for acquiring external sounds may be disposed in the microphone hole103, and in some embodiments, a plurality of microphones may be disposed to detect the direction of a sound. The speaker holes107and114may include an external speaker hole107and a communication receiver hole114. In some embodiments, the speaker hole107and114and the microphone hole103may be realized by one hole or a speaker may be included while a speaker hole107and114is not employed (e.g., a piezoelectric speaker).

The sensor modules104,116, and119may generate an electrical signal or a data value corresponding to an operational state of the interior of the electronic device100or an environmental state of the outside. The sensor modules104,116, and119, for example, may include a first sensor module104(e.g., a proximity sensor) and a second sensor module (not illustrated) (e.g., a fingerprint sensor) disposed on the first surface110A of the housing110, and/or a third sensor module119(e.g., a HRM sensor) and/or a fourth sensor module116(e.g., a fingerprint sensor) disposed on the second surface110B of the housing110. The fingerprint sensor may be disposed not only on the first surface110A (e.g., the display101) but also on the second surface110B of the housing110. The electronic device100may further include a sensor module (not illustrated), for example, at least one of a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor104.

The camera modules105,112, and113may include a first camera device105disposed on the first surface110A of the electronic device100, and a second camera device112and/or a flash113disposed on the second surface110B. The camera devices105and112may include one or a plurality of lenses, an image sensor, and/or an image signal processor. The flash113, for example, may include a light emitting diode or a xenon lamp. In some embodiments, two or more lenses (an infrared ray camera or a wide angle/telephoto lens), and image sensors may be disposed on one surface of the electronic device100.

The key input device117may be disposed on the side surface110C of the housing110. In another embodiment, the electronic device100may not include some or all of the above-mentioned key input devices117and the key input devices117which are not included, may be realized in different forms, such as a soft key, on the display101. In some embodiments, the key input device may include a sensor module116disposed on the second surface110B of the housing110.

The light emitting element106, for example, may be disposed on the first surface110A of the housing110. The light emitting element106, for example, may provide state information on the electronic device100in the form of light. In other embodiments, the light emitting element106, for example, may provide a light source that interworks with an operation of the camera module105. The light emitting element106, for example, may include an LED, an IR LED, and a xenon lamp.

The collector holes108and109may include a first connector hole108that may accommodate a connector (e.g., a USB connector) for transmitting and receiving electric power and/or data to and from an external electronic device and/or a second connector hole (e.g., an earphone jack)109that may accommodate a connector for transmitting and receiving an audio signal to and from the external device.

FIG.3is an exploded perspective view schematically illustrating an internal configuration of the mobile electronic device according to an embodiment.

Referring toFIG.3, an electronic device300may include a side bezel structure310, a first support member311(e.g., a bracket), a front plate320, a display330, a printed circuit board340, a battery350, a second support member360(e.g., a rear case), an antenna370, and a rear plate380. In some embodiments, at least one (e.g., the first support member311or the second support member360) of the elements may be omitted from the electronic device300or another component may be additionally included in the electronic device300. At least one of the components of the electronic device300may be the same as or similar to at least one of the components of the electronic device100ofFIGS.1and2, and a repeated description thereof will be omitted.

The first support member311may be disposed in the interior of the electronic device300to be connected to the side bezel structure310or to be integrally formed with the side bezel structure310. The first support member311, for example, may be formed of a metallic material and/or a nonmetallic material (e.g., a polymer). The display330may be coupled to one surface of the first support member311, and the printed circuit board340may be coupled to an opposite surface of the first support member311. A processor, a memory, and/or an interface may be mounted on the printed circuit board340. The processor, for example, may include one or more of a central processing unit, an application processor, a graphic processing unit, an image signal processor, a sensor hub processor, or a communication processor.

The memory, for example, may include a volatile and/or nonvolatile memory.

The battery350is a device for supplying electric power to at least one component of the electronic device300, and for example, may include a primary battery that cannot be recharged, a secondary battery that may be recharged, or a fuel cell. At least a portion of the battery350, for example, may be disposed on substantially the same plane as the printed circuit board340. The battery350may be integrally disposed in the interior of the electronic device300, and may be disposed to be detachable from the electronic device300.

The antenna370may be disposed between the rear plate380and the battery350. The antenna370, for example, may include a near field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna370, for example, may perform short-range communication with an external device, or may wirelessly transmit and receive electric power that is necessary for charging. In another embodiment, an antenna structure may be defined by some of the side bezel structure310and/or the first support member311, or a combination thereof.

FIG.4Ais a plan view illustrating an electrode plate and an electrode tab of a pouch type battery cell in a state before rolling according to an embodiment.

FIG.4Bis a plan view illustrating the electrode plate and the electrode tab of the pouch type battery cell in a state of rolling according to an embodiment.

Referring toFIGS.4A and4B, a conventional pouch type battery cell40may include a battery cell electrode plate41and a single tab42.

For example, the pouch type battery cell40may be a lithium ion battery. The lithium ion battery may include five constituent elements. The five constituent elements may include a positive electrode (including a tab, a positive electrode substrate, and a positive electrode active material), a negative electrode (including a tab, a negative electrode substrate, and a negative electrode active material), a case (a pouch or a container or the like), a separator, and an electrolyte.

The positive electrode may mainly employ a lithium cobalt oxide (LiCoO2) as an active material, and an aluminum (Al) substrate as a positive electrode substrate. The negative electrode may employ graphite (C) as an active material, and copper (Cu) as a negative electrode substrate. The separator may function to provide a passage, through which lithium (Li) ions flow, between the positive electrode and the negative electrode, and insulate the positive electrode and the negative electrode as well. Currents of the lithium ion battery may flow through the tabs.

The battery cell electrode plate41of the battery cell40having the above-described configuration may be folded along dotted lines f one or more times, and the folded cell parts401may be wound in a roll type to be disposed to overlap each other. For example, the folded cell parts410may have a rectangular shape and the like. The dotted lines f may be folding lines. According to various embodiments, the single tab42may be connected to the battery cell electrode plate41to apply a current to the battery dell electrode plate41.

However, because the current transfer path of the conventional pouch type battery cell becomes longer as it is located farther from the single tab due to the mounting structure of the single tab, a chemical reaction in the battery cell is not uniform and thus the energy distribution in the battery cell is not uniform so that stability may problematic and there may be a limit in maximizing the performance of the battery.

Hereinafter, a configuration of the pouch type battery cell according to various embodiments of the disclosure will be described with reference to the accompanying drawings.

FIG.5Ais a plan view illustrating a battery cell electrode plate and multi-tabs of a pouch type battery cell in a state before rolling according to an embodiment.

Referring toFIG.5A, a pouch type battery cell50(e.g., the battery350ofFIG.3) according to various embodiments may have a close correlation with a current uniformity and a cell interior resistance according to the location of battery tabs52. The pouch type battery cell50according to various embodiments may include a battery cell electrode plate51or first to fourth electrode tabs52-1to52-4. For example, the pouch type battery cell50may be a lithium ion battery.

The battery cell electrode plate51of the lithium ion battery according to various embodiments may include first to fourth cell parts510-1to510-4formed by folding the battery cell electrode plate51along dotted lines f one or more times. For example, the first to fourth cell parts510-1to510-4may be disposed to overlap each other. For example, the first to fourth cell parts510-1to510-4may have a polygonal shape, for example, a rectangular shape. The dotted lines f of the first to fourth cell parts510-1to510-4may be folding lines.FIG.5Aillustrates four cell parts510-1to510-4, but three or less or five or less cell parts510-1to510-4may be disposed.

The first to fourth electrode tabs52-1to52-4according to various embodiments may be mounted on the battery cell electrode plate51whereby a current may be applied to the battery cell electrode plate51. According to an embodiment, at least one of the first to fourth electrode tabs52-1to52-4may be disposed in the first to fourth cell parts510-1to510-4.

Because the current transfer path of the pouch type battery50according to the configuration becomes shorter as currents flow to the first to fourth electrode tabs52-1to52-4, respectively, the resistance of the battery cell can become lower and the performance and the lifetime of the battery can be increased.

According to various embodiments, the first to fourth electrode tabs52-1to52-4may protrude from peripheries of the first to fourth cell parts510-1to510-4.

According to various embodiments, the first to fourth electrode tabs52-1to52-4may include first to fourth conductive parts520-1to520-4and first to fourth nonconductive parts522-1to522-4. According to an embodiment, the first to fourth nonconductive parts522-1to522-4may be omitted. The shapes of the first to fourth electrode tabs52-1to52-4may be different. For example, the lengths, the thicknesses, or the widths of the first to fourth electrode tabs52-1to52-4may be different.

The battery cell electrode plate51according to various embodiments may be a positive electrode plate or a negative electrode plate. For example, when the battery cell electrode plate51is a positive electrode plate, the first to fourth cell parts510-1to510-4may be positive cell parts and the first to fourth electrode tabs52-1to52-4may be positive electrode tabs. For example, when the battery cell electrode plate51is a negative electrode plate, the first to fourth cell parts510-1to510-4may be negative cell parts and the first to fourth electrode tabs52-1to52-4may be negative electrode tabs.

According to various embodiments, in the pouch type battery cell50, the first to fourth electrode tabs52-1to52-4are not limited to those provided in the first to fourth cell parts510-1to510-4, respectively. For example, the first electrode tab52-1may be disposed in the first cell part510-1, the second electrode tab52-2may be disposed in the second cell part510-2, the third electrode tab52-3may be disposed in the third cell part510-3, and the fourth electrode tab52-4may not be disposed in the fourth cell part510-4.

According to various embodiments, the first to fourth electrode tabs52-1to52-4may be attached to portions of the first to fourth cell parts510-1to510-4by using an insulation tape (not illustrated).

The first to fourth electrode tabs52-1to52-4may be mounted on the first to fourth cell parts510-1to510-4, and the mounting locations of the first to fourth electrode tabs52-1to52-4may be different. The mounting locations of the first to fourth electrode tabs52-1to52-4will be described below with reference toFIG.5B.

FIG.5Bis a plan view illustrating the electrode plate and the electrode tabs of the pouch type battery cell in a folded state according to an embodiment of the disclosure.

Referring toFIG.5B, in the pouch type battery50, in which the cell parts are folded, according to various embodiments, when viewed from the top of one surface of the first cell part510-3disposed on the uppermost side, the first to fourth conductive parts520-1to520-4of the first to fourth electrode tabs52-1to52-4may be disposed not to overlap each other. At least portions of the first plate (e.g., the plurality of cell parts (e.g., the cell parts510-1to510-4ofFIG.5A)) of the electronic device may be disposed to overlap each other when viewed from the top ofFIG.1. Further, among the plurality of cell parts (e.g., the cell parts510-1to510-4ofFIG.5A), at least two cell parts may include one or more electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) protruding to the outside. The one or more electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) protruding from the two or more cell parts (e.g., the cell parts510-1to510-4) when viewed from the top of the first plate may be disposed to be at least partially parallel to each other. For example, the one or more electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) may be disposed to be parallel to each other while not overlapping each other.

As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fourth electrode tabs52-1to52-4) illustrated inFIG.5Bmay not be increased.

FIG.6Ais a plan view illustrating an electrode plate and electrode tabs of a pouch type battery cell in a state before folding according to various embodiments of the disclosure;

Referring toFIG.6A, as compared with the pouch type battery cell50(the four cell parts510-1to510-4and the four electrode tabs52-1to52-4provided in the cell parts) illustrated inFIG.5A, a pouch type battery cell60according to various embodiments may include five cell parts610-1to610-5, and electrode tabs62-1to62-5included in the cell parts610-1to610-5.

The pouch type battery cell60(e.g., the battery cell50ofFIG.5A) according to various embodiments may include a battery cell electrode plate61(e.g., the battery cell electrode plate51ofFIG.5A), and first to fifth electrode tabs62-1to62-5(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A). For example, the pouch type battery60may be a lithium ion battery.

The battery cell electrode plate61of the lithium ion battery according to various embodiments may include first to fifth cell parts610-1to610-5formed by folding the battery cell electrode plate51along dotted lines f one or more times. For example, the first to fifth cell parts610-1to610-5(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to overlap each other. For example, the first to fifth cell parts610-1to610-5may have a polygonal shape, for example, a rectangular shape. The dotted lines f of the first to fifth cell parts610may be folding lines.

The first to fifth electrode tabs62-1to62-5according to various embodiments may be mounted on the battery cell electrode plate61whereby a current may be applied to the battery cell electrode plate61. According to an embodiment, at least one of the first to fifth electrode tabs62-1to62-5may be disposed in the first to fifth cell parts610-1to610-5.

Because the current transfer path of the pouch type battery60according to the configuration becomes shorter as currents flow to the first to fifth electrode tabs62-1to62-5, respectively, the resistance of the battery cell can become lower and the performance and the lifetime of the battery can be increased.

According to various embodiments, the first to fifth electrode tabs62-1to62-5may include first to fifth conductive parts620-1to620-5(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) or first to fifth nonconductive parts622-1to622-5(e.g., the first to fourth nonconductive parts522-1to522-4ofFIG.5A). According to an embodiment, the first to fifth nonconductive parts622-1to622-5may be omitted. The shapes of the first to fifth electrode tabs62-1to62-5may be different. For example, the lengths, the thicknesses, and/or the widths of the first to fifth electrode tabs62-1to62-5may be different.

According to various embodiments, in the pouch type battery cell60, the first to fifth electrode tabs62-1to62-5are not limited to those provided in the first to fifth cell parts610-1to610-5, respectively. For example, the first electrode tab62-1may be disposed in the first cell part610-1, the second electrode tab62-2may be disposed in the second cell part610-2, the third electrode tab62-3may be disposed in the third cell part610-3, the fourth electrode tab62-4may be disposed in the fourth cell part610-4, and the fifth electrode tab62-5may not be disposed in the fifth cell part610-5.

The battery cell electrode plate61according to various embodiments may be a positive electrode plate or a negative electrode plate.

According to various embodiments, the first to fifth electrode tabs62-1to62-5may be attached to portions of the first to fifth cell parts610-1to610-5by using an insulation tape (not illustrated).

The first to fifth electrode tabs62-1to62-5may be mounted on the first to fifth cell parts610-1to610-5, and the mounting locations of the first to fifth electrode tabs62-1to62-5may be different. The mounting locations of the first to fifth electrode tabs62-1to62-4will be described below with reference toFIG.6B.

FIG.6Bis a plan view illustrating the battery cell electrode plate and the electrode tabs of the pouch type battery cell in a state of rolling according to various embodiment of the disclosure.

Referring toFIG.6B, in the pouch type battery60, in which the cell parts are folded, according to various embodiments, when viewed from the vertical top of the fourth cell part610-4disposed on the uppermost side, the first to fifth conductive parts620-1to620-5of the first to fifth electrode tabs62-1to62-5may be disposed not to overlap each other. As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fifth electrode tabs62-1to62-5) illustrated inFIG.6Bmay not be increased.

FIG.7Ais a plan view illustrating a battery cell electrode plate and electrode tabs of a pouch type battery cell in a state before rolling according to an embodiment.

Referring toFIG.7A, a pouch type battery cell70(e.g., the battery cell50ofFIG.5A) according to various embodiments may include a battery cell electrode plate71and first to fifth electrode tabs721to725(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A). For example, the pouch type battery70may be a lithium ion battery.

The battery cell electrode plate71of the lithium ion battery according to various embodiments may include first to fifth cell parts711to715formed by folding the battery cell electrode plate51along dotted lines f one or more times. For example, the folded first to fifth cell parts711to715(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to overlap each other. For example, the folded first to fifth cell parts711to715may have a polygonal shape, for example, a rectangular shape. The dotted lines f of the first to fifth cell parts711to715may be folding lines.

The first to fifth electrode tabs721to725according to various embodiments may be included in the first to fifth cell parts711to715of the battery cell electrode plate71, respectively, whereby a current may be applied to the battery cell electrode plate71. According to an embodiment, at least one of the first to fifth cell parts711to715may be disposed in the first to fifth electrode tabs721to725.

Because the current transfer path of the pouch type battery according to the configuration becomes shorter as currents flow to the first to fifth electrode tabs721to725, respectively, in the first to fifth cell parts711to715, the resistance of the battery cell can become lower and the performance and the lifetime of the battery can be increased

According to various embodiments, the first electrode tab721or the second electrode tab722may include a first conductive part7210(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) or a second conductive part7220(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A), and a first nonconductive part7212(e.g., the first to fourth nonconductive parts522-1to522-4ofFIG.5A) or a second nonconductive part7222(e.g., the first to fourth nonconductive parts522-1to522-4ofFIG.5A). The first nonconductive parts7212or the second nonconductive parts7222may be omitted.

According to various embodiments, the fourth electrode tab724may include a fourth conductive part7240(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) or a fourth nonconductive part7242(e.g., the first to fourth nonconductive parts522-1to522-4ofFIG.5A). According to various embodiments, the fifth electrode tab725may include a fifth conductive part7250(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) or a fifth nonconductive part7252(e.g., the first to fourth nonconductive parts522-1to522-4ofFIG.5A). According to an embodiment, the fourth nonconductive parts7242or the fifth nonconductive parts7252may be omitted. The third electrode tab723may include only a conductive part7230. As another embodiment, the third electrode tab723may be omitted in the pouch type battery cell70.

The pouch type battery cell70according to various embodiments is not be limited to the above-described structure. For example, in the pouch type battery cell70, the electrode tab having a structure as the third electrode tab disposed in the third cell parts713is the first cell part711, but may be disposed in the second cell part712, the fourth cell part714, or the fifth cell part715.

According to various embodiments, the shapes of the first, second, fourth, and fifth electrode tabs721,722,724, and725may be different. For example, the lengths, the thicknesses, and/or the widths of the first, second, fourth, and fifth electrode tabs721,722,724, and725may be different.

In the pouch type battery cell70according to various embodiments, the five first to fifth electrode tabs721to725are not limited to being included in the first to fifth cell parts711to715, respectively. For example, the first electrode tab721may be disposed in the first cell part711, the second electrode tab722may be disposed in the second cell part712, the third electrode tab723may be disposed in the third cell part713, the fourth electrode tab724may be disposed in the fourth cell part714, and the fifth electrode tab725may not be disposed in the fifth cell part715.

In the pouch type battery cell70according to various embodiments, the first to third electrode tabs721to723may be disposed in the first to third cell parts711to713, respectively, and the remaining two fourth and fifth electrode tabs724and725may be omitted in the remaining fourth and fifth parts714and715, respectively. As another example, the third to fifth electrode tabs723to725may be disposed in the third to fifth cell parts713to715, respectively, and the remaining first and second electrode tabs721and722may be omitted in the remaining first and second cell parts711and712, respectively.

The battery cell electrode plate71according to various embodiments may be a positive electrode plate or a negative electrode plate.

According to various embodiments, the first to fifth electrode tabs721to725may be mounted on the first to fifth cell parts711to715, and the mounting locations of the first to fifth electrode tabs721to725may be different. The mounting locations of the first to fifth electrode tabs721to725will be described below with reference toFIG.7B.

FIG.7Bis a plan view illustrating the battery cell electrode plate and the electrode tabs of the pouch type battery cell in a folded state according to various embodiment of the disclosure.

Referring toFIG.7B, in the pouch type battery70according to various embodiments, when viewed from the vertical top of the first cell part711, the conductive parts7210,7220,7240, and7250of the first, second, fourth, and fifth electrode tabs721,722,724, and725, except for the third electrode tab723, may be disposed not to overlap each other. The third electrode tab723may be disposed to overlap the first, second, fourth, and fifth electrode tabs721,722,724, and725.

As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fifth electrode tabs721to725) illustrated inFIG.7Bmay not be increased.

FIG.8is a plan view illustrating a battery cell electrode plate and electrode tabs of a pouch type battery cell in a state before rolling according to various embodiments of the disclosure.

Referring toFIG.8, the substantially same configurations of the pouch type battery cell80according to various embodiments as the configurations of the pouch type battery cell50illustrated inFIGS.5A and5Bwill be omitted, and differences thereof will be omitted.

A pouch type battery cell80according to various embodiments may include a cell electrode plate81, first to fourth electrode tabs82-1to82-4, and/or first to fourth cell parts810-1to810-4.

According to an embodiment, at least one of the first to fourth electrode tabs82-1to82-4may be disposed in the first to fourth cell parts810-1to810-4.

The widths of the first to fourth conductive parts820-1to820-4of the first to fourth electrode tabs82-1to82-4(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) may be larger than the widths of the first to fourth conductive parts520-1to520-4of the electrode tabs illustrated inFIGS.5A and5B.

In the pouch type battery cell80according to various embodiments, when the first to fourth cell parts810-1to810-4(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) are folded along the folding lines f, some of first to fourth conductive parts820-1to820-4of the first to fourth electrode tabs82-1to82-4disposed in the first to fourth cell parts810-1to810-4, respectively, may be disposed not to overlap each other, and the remaining ones may be disposed to overlap each other. For example, the overlapping portions of the first to fourth electrode tabs82-1to82-4may be approximately a half of the areas thereof, and the portions of the first to fourth electrode tabs82-1to82-4may be also approximately a half of the areas thereof.

As compared with the thickness of the pouch type battery cell tab (e.g., the single tab42) illustrated inFIGS.4A and4B, the thicknesses of the first to fourth electrode tabs82-1to82-4of the pouch type battery cell illustrated inFIG.8may substantially not be increased.

FIG.9is a plan view illustrating a state in which electrode tabs of a rolled pouch type battery cell are bound by using a band according to various embodiments of the disclosure.

Referring toFIG.9, a pouch type battery cell90(e.g., the battery cell50ofFIG.5A) according to various embodiments may employ a joining structure, for example, a conductive band93to improve a joining performance between electrode tabs92(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) or conductive parts920(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) attached to the electrode tabs92. For example, the band93may make the electrode tabs92a bunch by using a conductive band or a nonconductive band. The joining structure for the electrode tabs92may be applied to the joining structure for the electrode tabs52-1to52-4,62-1to62-5,711to715, and82-1to82-4illustrated inFIGS.5A to8B, in the same way.

FIG.10Ais a plan view illustrating a state in which a positive battery cell and a negative battery cell are joined to a protection circuit according to various embodiments of the disclosure.FIG.10Bis a side view illustrating a battery cell including a positive electrode battery cell and a negative electrode battery cell according to various embodiments of the disclosure.

Referring toFIGS.10A and10B, positive electrode tabs1020(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) and negative electrode tabs1022(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) protruding from positive electrode and negative electrode cell parts1010and1012(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) as inFIGS.5A and5Bmay be joined to a positive electrode joining part1041(B+) and a negative electrode joining part1042(B−) of a battery protection circuit1040and electrically connect the cell parts1010and1012to a protection circuit1040.

In the pouch type battery cell1000(e.g., the battery cell50ofFIG.5A) according to various embodiments, when the stacked uppermost positive electrode cell part1010is viewed from the vertical top, the negative electrode tabs1022may be disposed not to overlap each other and the positive electrode tabs1020may be disposed not to overlap each other.

The negative electrode tabs1022of the pouch type battery cell1000according to various embodiments may include the first conductive parts1023(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A), and when the stacked uppermost cell part1010(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) is viewed from the vertical top, the first conductive parts1023of the negative electrode tabs may be disposed not to overlap each other. The positive electrode tabs1020of the pouch type battery cell1000according to various embodiments may include second conductive parts1021, respectively, and when the stacked uppermost cell part1010is viewed from the vertical top, the second conductive parts1021of the positive electrode tabs may be disposed not to overlap each other.

The negative electrode tabs1022of the pouch type battery cell according to various embodiments may be disposed not to overlap the positive electrode tabs1020. The first conductive parts1023of the pouch type battery cell1000according to various embodiments may be disposed not to overlap the second conductive parts1021.

FIG.11is a plan view illustrating separated cell parts and electrode tabs disposed in the cell parts according to various embodiments of the disclosure.

Referring toFIG.11, the substantially same configurations of the pouch type battery cell1100according to various embodiments as the configurations of the pouch type battery cell50illustrated inFIGS.5A and5Bwill be omitted, and differences thereof will be omitted.

In the pouch type battery cell1100according to various embodiments, first to fourth cell parts1110-1to1110-4(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to be separated from each other. In the pouch type battery cell1100, the first to fourth cell parts1110-1to1110-4, which are separated from each other, may be disposed in a stack type. If the first to fourth cell parts1110-1to1110-4are disposed in a stack type, the first to fourth conductive parts1113-1to1113-4(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) of the first to fourth electrode tabs1112-1to1112-4(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) provided in the first to fourth cell parts1110-1to1110-4may be disposed not to overlap each other.

The pouch type battery cell1100according to various embodiments may include first to fourth cell parts1110-1to1110-4and first to fourth electrode tabs1112-1to1112-4.

According to various embodiments, the first electrode tab1112-1may be disposed in the first cell part1110-1, the second electrode tab1112-2may be disposed in the second cell part1110-2, the third electrode tab1112-3may be disposed in the third cell part1110-3, and the fourth electrode tab1112-4may not be disposed in the fourth cell part1110-4.

According to an embodiment, at least one of the first to fourth electrode tabs1112-1to1112-4may be disposed in the first to fourth cell parts1110-1to1110-4.

As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fourth electrode tabs1112-1to1112-4) illustrated inFIG.11may not be increased.

FIG.12is a plan view illustrating separated cell parts and electrode tabs disposed in the cell parts according to various embodiments of the disclosure.

Referring toFIG.12, the substantially same configurations of the pouch type battery cell1200according to various embodiments as the configurations of the pouch type battery cell60illustrated in FIGS.6A and6B will be omitted, and differences thereof will be omitted.

In the pouch type battery cell1200according to various embodiments, first to fourth cell parts1210-1to1210-4(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to be separated from each other. In the pouch type battery cell1200, the first to fourth cell parts1210-1to1210-4, which are separated from each other, may be disposed in a stack type. If the first to fourth cell parts1210-1to1210-4are disposed in a stack type, the first to fourth conductive parts1213-1to1213-4(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) of the first to fourth electrode tabs1212-1to1212-4(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) provided in the first to fourth cell parts1210-1to1210-4may be disposed not to overlap each other.

The pouch type battery cell1200according to various embodiments may include first to fourth cell parts1210-1to1210-4and first to fourth electrode tabs1212-1to1212-4.

According to various embodiments, the first electrode tab1212-1may be disposed in the first cell part1210-1, the second electrode tab1212-2may be disposed in the second cell part1210-2, the third electrode tab1212-3may be disposed in the third cell part1210-3, and the fourth electrode tab1212-4may not be disposed in the fourth cell part1210-4.

According to an embodiment, at least one of the first to fourth electrode tabs1212-1to1212-4may be disposed in the first to fourth cell parts1210-1to1210-4.

As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fourth electrode tabs1212-1to1212-4) illustrated inFIG.12may substantially not be increased.

FIG.13is a plan view illustrating separated cell parts and electrode tabs disposed in the cell parts according to various embodiments of the disclosure.

Referring toFIG.13, the same configurations of the pouch type battery cell1300according to various embodiments as the configurations of the pouch type battery cell70illustrated inFIGS.7A and7Bwill be omitted, and differences thereof will be omitted.

In the pouch type battery cell1300according to various embodiments, first to fourth cell parts1311to1315(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to be separated from each other. In the pouch type battery cell1300, the first to fifth cell parts1311to1315, which are separated from each other, may be disposed in a stack type. If the first to fifth cell parts1311to1315are disposed in a stack type, the first, second, fourth, and fifth conductive parts13131,13132,13134, and13135(e.g., the conductive parts520-1to520-4ofFIG.5Aof the electrode tabs52-1to52-4ofFIG.5A) may be disposed not to overlap each other, and the first, second, fourth, and fifth conductive parts13131,13132,13134, and13135of the third electrode tab13123may be disposed to overlap each other.

The pouch type battery cell1300according to various embodiments may include first to fifth cell parts1311to1315and/or first to fifth electrode tabs13121to13125.

According to various embodiments, the first electrode tab13121may be disposed in the first cell part1311, the second electrode tab13122may be disposed in the second cell part1312, the third electrode tab13123may be disposed in the third cell part1313, the fourth electrode tab13124may be disposed in the fourth cell part1314, and the fifth electrode tab13125may not be disposed in the fifth cell part1315.

According to an embodiment, at least one of the first to fifth electrode tabs13121to13125may be disposed in the first to fifth cell parts1311to1315.

As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fifth electrode tabs13121to13125) illustrated inFIG.13may substantially not be increased.

FIG.14is a plan view illustrating separated cell parts and electrode tabs disposed in the cell parts according to various embodiments of the disclosure.

Referring toFIG.14, the substantially same configurations of the pouch type battery cell1400according to various embodiments as the configurations of the pouch type battery cell80illustrated inFIGS.8A and8Bwill be omitted, and differences thereof will be omitted.

In the pouch type battery cell1400according to various embodiments, first to fourth cell parts1410-1to1410-4(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to be separated from each other. In the pouch type battery cell1400, the first to fourth cell parts1410-1to1410-4, which are separated from each other, may be disposed in a stack type. If the first to fourth cell parts1410-1to1410-4are disposed in a stack type, the first to fourth conductive parts1413-1to1413-4(e.g., the first to fourth conductive parts520-1to520-4ofFIG.5A) of the first to fourth electrode tabs1412-1to1412-4(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) provided in the first to fourth cell parts1410-1to1410-4may be disposed such that some of them overlap each other and the remaining ones thereof do not overlap each other.

The pouch type battery cell1400according to various embodiments may include first to fourth cell parts1410-1to1410-4and first to fourth electrode tabs1412-1to1412-4.

According to various embodiments, the first electrode tab1412-1may be disposed in the first cell part1410-1, the second electrode tab1412-2may be disposed in the second cell part1410-2, the third electrode tab1412-3may be disposed in the third cell part1410-3, and the fourth electrode tab1412-4may not be disposed in the fourth cell part1410-4.

According to an embodiment, at least one of the first to fourth electrode tabs1412-1to1412-4may be disposed in the first to fourth cell parts1410-1to1410-4.

As compared with the thickness of the pouch type battery cell tab (e.g., the thickness of the single tab42) illustrated inFIGS.4A and4B, the thickness of the pouch type battery cell tab (e.g., the first to fourth electrode tabs1412-1to1412-4) illustrated inFIG.14may substantially not be increased.

Referring toFIG.15A, in the pouch type battery cell1500according to various embodiments, the shapes of the first to third electrode tabs1521to1523disposed in the first to third cell parts1511to1513may be different.

According to an embodiment, by making the shapes of the first to third electrode tabs1521to1523different, the joining performance of the first to third electrode tabs1521to1523can be improved when the first to third electrode tabs1521to1523are bound in a bunch. For example, the electrode tabs1521and1523located at peripheries may be disposed to be deflected or inclined to face the electrode tab1522located at the center.

According to an embodiment, when the pouch type battery cell1500is viewed from the front side, the first electrode tab1521and the third electrode tab1523located while the second electrode tab1522is located in the middle may be disposed to be deflected or inclined toward the second electrode tab1522.

According to an embodiment, when the pouch type battery cell1500has first to third electrode tabs1521to1523of different shapes, the first electrode tab1521or the third electrode tab1523may be bent toward the second electrode tab1522while the second electrode tab1522is located in the middle. The first and third electrode tabs1521and1523may be bent toward the first electrode tab1522to form a joining structure between electrode tabs at at least a portion of the folded cell parts when the cell parts are folded.

As another example, in the battery cell1500, the first to third electrode tabs1521to1523may be formed in the form of a single electrode tab by using a band (e.g., the band93illustrated inFIG.9). An end of the first electrode tab1521or the third electrode tab1523may be connected to the second electrode tab1522. For example, the bending angle of the first electrode tab1521or the third electrode tab1523may be approximately 30 degrees or 90 degrees.

According to an embodiment, because the first to third electrode tabs1521to1523of different shapes are disposed to have a single electrode tab shape, the thicknesses of the first to third electrode tabs1521to1523may be reduced. The first to third electrode tabs1521to1523may be disposed to have different thicknesses and/or widths.

Referring toFIG.15B, when the pouch type battery cell1530is viewed from a side, the first electrode tab1541and the third electrode tab1542located while the second electrode tab1542is taken as the center may be disposed to be deflected or inclined toward the second electrode tab1543.

For example, when the first to third electrode tabs1541to1543of different shapes are disposed, the first electrode tab1541or the third electrode tab1543may be deflected or inclined toward the second electrode tab1522while the second electrode tab1542is located in the middle. As another example, in the battery cell1530, the first to third electrode tabs1541to1543may be formed in the form of a single electrode tab by using a band (e.g., the band93illustrated inFIG.9). A portion of the first electrode tab1541or the third electrode tab1543may be connected to the second electrode tab1542. The first to third electrode tabs1541to1543may be disposed to have different thicknesses and/or widths.

FIG.16Ais a side view illustrating a state in which the first and second electrode tabs1602-1and1602-2are disposed between the first to third cell parts1601-1to1601-3to overlap each other when the pouch type battery cell1600(e.g., the pouch type battery cell40ofFIG.4a) is viewed from the vertical top.

It is assumed that the thicknesses of the first to third cell parts1601-1to1601-3are substantially the same and the thicknesses of the first and second electrode tabs1602-1and1602-2are substantially the same. For example, the thicknesses of the first to third cell parts1601-1to1601-3are 0.4 mm and the thicknesses of the first and second electrode tabs1602-1to1602-2are 0.2 mm, the vertical thickness of the pouch type battery cell1600may be approximately 1.6 mm when the pouch type battery cell1600is pressed upwards and downwards. If the thicknesses of the overlapping portions of the first to third cell parts1601-1to1601-3and the first and second electrode tabs1602-1and1602-2are added, the resultant thickness may be approximately 1.6 mm.

FIG.16Bis a side view illustrating a state in which the first and second electrode tabs1612-1and1612-2are disposed between the first to third cell parts1611-1to1611-3not to overlap each other when the pouch type battery cell1610(e.g., the pouch type battery cell50ofFIG.5a) is viewed from the vertical top.

According to an embodiment, it is assumed that the thicknesses of the first to third cell parts1611-1to1611-3are substantially the same and the thicknesses of the first and second electrode tabs1612-1and1612-2are substantially the same. For example, the thicknesses of the first to third cell parts1611-1to1611-3are 0.4 mm and the thicknesses of the first and second electrode tabs1612-1to1612-2are 0.2 mm, the vertical thickness of the pouch type battery cell1600may be approximately 1.4 mm when the pouch type battery cell1610is pressed upwards and downwards. If the thicknesses of the overlapping portions of the first to third cell parts1611-1to1611-3and the first and second electrode tabs1612-1and1612-2are added, the resultant thickness may be approximately 1.4 mm. For example, it can be seen than the vertical thickness of the pouch type battery cell1610illustrated inFIG.16Bis smaller than the vertical thickness of the pouch type battery cell1600illustrated inFIG.16Aby approximately 0.2 mm. The slimmed structure of the pouch type battery cell1610can reduce the thickness of the pouch type battery cell because an increment of the thickness of the overlapping portions caused by the first and second electrode tabs1612-1and1612-2is distributed when the first and second electrode tabs1612-1and1612-2and the first to third cell parts1611-1to1611-3are disposed not to overlap each other.

A structure, in which the first and second electrode tabs1602-1and1602-2are disposed in the first to third cell parts1601-1to1601-3not to overlap each other, may be more advantageous in terms of the slimness of the pouch type battery cell than a structure, in which the first and second electrode tabs1612-1and1612-2are disposed in the first to third cell parts1611-1to1611-3to overlap each other.

Referring toFIG.17, the pouch type battery cell1700(e.g., the battery cell50ofFIG.5A) according to various embodiments may include a plurality of cell parts1700-1to1700-3(e.g., the first to fourth cell parts510-1to510-4ofFIG.5A), and a plurality of electrode tabs1721to1723(e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) including one or more bending parts17211,17212,17231, and17232disposed in one or more cell parts, among the plurality of cell parts, for example, a plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A).

In the battery cell1700according to various embodiments, one or more bending parts17211,17212,17231, and17232may be disposed in one or more electrode tabs, among the electrode tabs1721to1723. The electrode tabs1721and1723having one or more bending parts17211,17212,17231, and17232may face the electrode tab1722located in the middle to gather while the electrode tab1722in the middle is located between the electrode tabs1721and1723.

The battery cell1700according to various embodiments may include first to third cell parts1700-1to1700-3, and first to third electrode tabs1721to1723disposed in the first to third cell parts1700-1to1700-3. The first electrode tab1721may protrude from a periphery of the first cell part1700-1, the second electrode tab1722may protrude from a periphery of the second cell part1700-2, and the third electrode tab1723may protrude from a periphery of the third cell part1700-3.

The first to third electrode tab1700-1to1700-3according to various embodiments may be disposed not to overlap each other when viewed from the top of the outer sides of the cell parts. In the battery cell1700according to various embodiments, the first to third electrode tabs1721to1723that do not overlap each other and are parallel to each other when the cell parts, in which the first to third electrode tabs1700-1to1700-3are disposed, may be substantially the same as or similar to the thickness of the thickness of one electrode tab.

The first electrode tab1721according to various embodiments may include one or more bending parts17211and17212. For example, the first electrode tab1721may include a first bending part17211that is bent immediately after the first electrode tab1721is extracted from the first cell part1700-1, and a second bending part17212that is bent around the second electrode tab1722. The first electrode tab1721may be extracted from the first cell part1700-1to face the second electrode tab1722due to the first bending part17211, and may be disposed to be parallel to the second electrode tab1722while not overlapping the second electrode tab1722due to the second bending part17212. The third electrode tab1723may be extracted from the third cell part1700-3to face the second electrode tab1722due to the first bending part17231, and may be disposed to be parallel to the second electrode tab1722while not overlapping the second electrode tab1722due to the second bending part17232. For example, although the first bending part17211of the first electrode tab1721is bent by approximately 90 degrees, the disclosure is not limited thereto and the first bending part17211may be bent at various angles, and although the second bending parts17211is bent at approximately 90 degrees, but the disclosure is not limited thereto and the second bending parts17211may be bent at various angles. For example, although the first bending part17231of the third electrode tab1723is bent by approximately 90 degrees, the disclosure is not limited thereto and the first bending part17231may be bent at various angles, and although the second bending parts17232is bent at approximately 90 degrees, but the disclosure is not limited thereto and the second bending parts17232may be bent at various angles.

The arrangement structure of the first to third electrode tabs1721to1723may be advantageous in the terms of the slimness of the joining structure of a plurality of electrode tabs.

According to various embodiments, an electronic device (e.g., the electronic device100ofFIG.1) may include: a housing (e.g., the housing110ofFIG.1) may include: a first plate (e.g., the front plate102ofFIG.1); a second plate (e.g., the rear plate111ofFIG.2) facing an opposite side to the first plate (e.g., the front plate102ofFIG.1); and a side member (e.g., the side member118ofFIG.1) surrounding a space between the first plate102and the second plate111, and connected to the second plate111or integrally formed with the second plate111; a display (e.g., the display101ofFIG.1) viewed through at least a portion of the first plate102; a battery disposed in the housing (e.g., the housing110ofFIG.1), the battery including: a battery cell (the battery cell50ofFIG.5A) including a plurality of cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) disposed such that at least portions of the plurality of cell parts510-1to510-4overlap each other when viewed from the top of one surface of the battery; and a plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) disposed such that the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) do not overlap each other at peripheries of the plurality of cell parts510-1to510-4when viewed from the top of one surface of the battery; a battery protection circuit (e.g., the protection circuit1040ofFIG.10A) joined to the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A); and a processor operatively connected to the display101and the battery.

According to various embodiments, at least one of the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) is linear or curved.

According to various embodiments, the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) may be bound as a single body by using a conductive band (e.g., the conductive band93ofFIG.9).

According to various embodiments, the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) may protrude at peripheries of the cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A), respectively.

According to various embodiments, among the plurality of conductive members (e.g., the first to third conductive members1721-1to1721-3ofFIG.17), at least one conductive member may have one or more bending parts (e.g., the first and second bending parts17211,17212,17231, and17232ofFIG.17).

According to various embodiments, each of the cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may have a rectangular shape when viewed from one surface of the battery.

According to various embodiments, the plurality of cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) may be disposed to be folded, rolled, or stacked.

According to various embodiments, the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) may be formed to have different lengths, different thicknesses, and different widths.

According to various embodiments, the electronic device (e.g., the electronic device100ofFIG.1) may further include a printed circuit board (e.g., the printed circuit board340ofFIG.3) in the space, and the plurality of conductive members (e.g., the conductive members520-1to520-4ofFIG.5A) may be electrically connected to a printed circuit board340.

According to various embodiments, the plurality of conductive members (e.g., the first to fourth conductive members520-1to520-4ofFIG.5A) may define positive electrode tabs or negative electrode tabs of the battery cell.

According to various embodiments, an electronic device (e.g., the electronic device100ofFIG.1) may include: a housing (e.g., the housing110ofFIG.1) including: a first plate (e.g., the front plate102ofFIG.1); a second plate (e.g., the rear plate111ofFIG.2) facing an opposite side of the first plate102; and a side member (e.g., the side member118ofFIG.10) surrounding a space between the first plate102and the second plate111; a display (e.g., the display101ofFIG.1) disposed in the space and visually exposed through at least a portion of the first plate102; and a battery disposed in the space to be parallel to the first plate102, the battery including: a battery cell (e.g., the battery pattern50ofFIG.5A) including a plurality of cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) disposed such that at least portions of the plurality of cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A) overlap each other when the first plate is viewed from the top; and a plurality of electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) protruding to the outside from at least two cell parts, among the plurality of cell parts (e.g., the first to fourth cell parts510-1to510-4ofFIG.5A), wherein one or more electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A), among the plurality of electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) protruding from the at least two cell parts, are disposed to be at least partially parallel to each other when the first plate is viewed from the top.

According to various embodiments, the one or more electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) may be disposed in parallel to each other while not overlapping each other.

According to various embodiments, the one or more electrode tabs, among the plurality of electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A), may include one or more bending parts (e.g., the first and second bending parts17211,17212,17231, and17232ofFIG.17).

According to various embodiments, the plurality of electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) may include positive electrode tabs or negative electrode tabs.

According to various embodiments, the plurality of electrode tabs (e.g., the first to fourth electrode tabs52-1to52-4ofFIG.5A) may be bound as a single body and joined to each other by a conductive structure, and the conductive structure may include a conductive band (e.g., the conductive band93ofFIG.9).

The embodiments of the disclosure described and shown in the specification and the drawings have been presented to easily explain the technical contents of the disclosure and help understanding of the disclosure, and are not intended to limit the scope of the disclosure. Therefore, the scope of the disclosure should be construed to include, in addition to the embodiments disclosed herein, all changes and modifications derived on the basis of the technical idea of the disclosure.