BATTERY ASSEMBLY AND ELECTRONIC DEVICE

A battery assembly, and an electronic device incorporating a battery assembly, includes at least one cell, a battery protection plate and a heat dissipation assembly. The cell includes a cell body and a tab protruding from the cell body. The battery protection plate connected with the tab. The heat dissipation assembly connected with the tab and the battery protection plate, and the heat dissipation assembly includes a phase-change material for absorbing heat.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is based on and claims priority to Chinese Patent Application No. 202010800568.7, filed on Aug. 11, 2020, the entire content of which is incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to a technical field of electronic devices, and more particularly, to a battery assembly and an electronic device.

BACKGROUND

At present, a mobile phone, a tablet computer, a laptop computer and other electronic devices mostly use a battery assembly as a power supply source. With the people's demand for fast charging, a relatively high charging power is needed to charge cells of the battery assembly. However, it is easy to cause the battery assembly to heat and thus a charging current need to be reduced, which affects charging efficiency. Based on this, it is necessary to dissipate heat of the battery assembly to improve the charging efficiency.

SUMMARY

The present disclosure provides an improved battery assembly and an electronic device.

A first aspect of the present disclosure provides a battery assembly, which includes at least one cell including a cell body and a tab protruding from the cell body; a battery protection plate connected with the tab; and a heat dissipation assembly connected with the tab and the battery protection plate, and the heat dissipation assembly includes a phase-change material for absorbing heat.

Another aspect of the present disclosure provides an electronic device, which includes a body and a battery assembly. The body is provided with a battery compartment. The battery assembly includes at least one cell, a battery protection plate and a heat dissipation assembly. The cell includes a cell body and a tab protruding from the cell body. The battery protection plate is connected with the tab. The heat dissipation assembly is connected with the tab and the battery protection plate, and the heat dissipation assembly includes a phase-change material for absorbing heat. The battery assembly is assembled in the battery compartment.

DETAILED DESCRIPTION

Exemplary embodiments of the present disclosure will be described in details herein, and the examples thereof are illustrated in the accompanying drawings. When the description below concerns the drawings, same numbers in different drawings represent same or similar elements unless indicated otherwise. In the following exemplary embodiments, the embodiments illustrated do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

The terms used in the present disclosure are merely to describe specific embodiments, which are not intended to limit the present disclosure. Unless defined otherwise, the technical or scientific terminologies used in the present disclosure shall be the general meaning understood by those skilled in the related art of the present disclosure. Terms such as “first”, “second” and the like used in the descriptions and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as “one” or “a” do not refer to quantity limitation, but to indicate the existence of at least one. Unless specified otherwise, terms such as “comprise” or “including” and the like mean that the elements or objects presented before “comprise” or “including” contain the elements or objects presented after “comprise” or “including” and their equivalents, which do not exclude other elements or objects. The terms “mounted,” “connected,” and the like are not restricted to physical or mechanical connections, may also be electrical connections, no matter direct or indirect.

As used in the descriptions and the appended claims of the present disclosure, “a” “said” and “the” in singular forms mean including plural forms, unless clearly indicated in the context otherwise. It should also be understood that, as used herein, the term “and/or” represents and contains any and all possible combinations of one or more associated listed items.

FIG. 1illustrates an exploded view of a battery assembly illustrated in an exemplary embodiment, andFIG. 2illustrates a schematic view of the assembled battery assembly provided inFIG. 1. Referring toFIGS. 1 and 2, the battery assembly includes a cell110, a fixation tape120and a battery protection plate130. The cell110includes a cell body111and two tabs112protruding from the cell body111. Each tab112is bent towards the cell body111and defines a gap113. The fixation tape120is adhered to the gap113and is also adhered to the battery protection plate130. When the cell110is charged with a relatively high charging power, the tab112and the battery protection plate130are easy to generate heat, which causes a temperature rise of the tab112and the battery protection plate130. Due to a temperature limit, a low current is needed to charge the cell110, which affects the charging efficiency and is not conducive to improving the user experience. Moreover, the temperature rise of the battery assembly will increase a local temperature of the electronic device, which is not conducive to improving the user experience, either.

In order to solve the above problems, the embodiments of the present disclosure provide a battery assembly and an electronic device, which are described below in combination with the attached drawings.

As illustrated inFIG. 10, the electronic device1000provided by the embodiments of the present disclosure includes a battery assembly200. The electronic device1000may include a body500, the body500is provided with a battery compartment510, and the battery assembly200is assembled in the battery compartment510to supply power for the electronic device1000.

The electronic device provided by embodiments of the present disclosure includes, but is not limited to, a mobile phone, a tablet computer, an iPad, a digital broadcasting terminal, a message receiving and sending device, a game console, a medical facility, a fitness facility, a personal digital assistant, an intelligent wearable device, an intelligent television, etc.

FIG. 3illustrates an exploded view of a battery assembly according to an exemplary embodiment of the present disclosure,FIG. 4illustrates a schematic view of the assembled battery assembly provided inFIG. 3;FIG. 5illustrates a sectional view of the battery assembly provided inFIG. 4along line A-A,FIG. 6illustrates a partially enlarged view of part B inFIG. 5. Referring toFIGS. 3 to 6, a battery assembly200includes at least one cell210, a battery protection plate220, and a heat dissipation assembly230.

The cell210includes a cell body211and a tab212protruding from the cell body211. In the embodiment of the present disclosure, there may be one or a plurality of cells210. When a plurality of cells210are provided, the matching relationship of the tab212with the battery protection plate220and the heat dissipation assembly230of each cell210is identical.

The battery protection plate220is connected with the tab212. In this way, the battery protection plate220charges the cell body211via the tab212. The battery protection plate220may avoid the problems of over-current and over-voltage, so as to ensure the safe charging of the cell body211.

The heat dissipation assembly230is connected with the tab212and the battery protection plate220, and the heat dissipation assembly230includes a phase-change material for absorbing heat. The heat generated by the tab212and the battery protection plate220due to the charging and discharging is absorbed by the heat dissipation assembly230, so as to reduce the temperature of the tab212and the battery protection plate220, which is conducive to charging the cell body211with a relatively high current, so as to achieve fast charging. Exemplarily, the phase-change material includes paraffin, a mixture of paraffin and other substances or other substances, etc. Taking the paraffin as an example, when the temperature is relatively high, the paraffin in a solid phase absorbs the heat and turns into a liquid phase, which is conductive to reducing the temperature of the tab212and the battery protection plate220.

Based on the above, in the battery assembly200and the electronic device provided by the embodiments of the present disclosure, based on the connection of the heat dissipation assembly230with the tab212and the battery protection plate220, the phase-change material in the heat dissipation assembly230may absorb the heat of the tab212and the battery protection plate220to reduce the temperature of the battery assembly200, which is conducive to charging the battery assembly200with a relatively high current, thereby improving the charging efficiency and the user experience. In addition, it does not cause a local heating problem of electronic device and the user experience can be improved.

In order to better understand the battery assembly200provided by the embodiments of the present disclosure, a matching relationship between one cell210and other components is described as follows:

FIG. 7illustrates a partially enlarged front view of part B inFIG. 5. In some embodiments, referring toFIGS. 6 and 7, the tab212includes a first tab portion214protruding from the cell body211and a second tab portion215connected to the first tab portion214, the second tab portion215and the first tab portion214are relatively bent, and a first gap201is defined between the second tab portion215and the first tab portion214. The heat dissipation assembly230includes a first heat dissipation body231passing through the first gap201and connected to the tab212and the battery protection plate220. In this way, the first heat dissipation body231is not only conducive to firmly fixing the tab212with the battery protection plate220, preventing the tab212from being pulled due to a displacement of the battery protection plate220, avoiding the tab212from cracking or short circuit due to the displacement, but also effectively absorbing the heat of the tab212and the battery protection plate220. Generally, the tab212can be bent, and the first heat dissipation body231occupies the first gap201defined by bending the tab212, so as to avoid the tab212occupying other areas and wasting space, and the first heat dissipation body231is arranged in the first gap201, which may also prevent the tab212from cracking due to excessive bending.

In some embodiments, a plurality of tabs212are provided, and the plurality of tabs212define a plurality of first gaps201. The first heat dissipation body231extends through the plurality of first gaps201. In other words, continuing to refer toFIGS. 3, 6 and 7, the first heat dissipation body231presents an elongate plate-shaped structure, which extends to the plurality of first gaps201and is connected with the tab212and the battery protection plate220, or the first heat dissipation body arranged in the plurality of first gaps201is formed in one piece. Thus, it is conducive for the first heat dissipation body231to absorb more heat from the tab212and the battery protection plate220, and it is conducive for the tab212to be firmly connected to the battery protection plate220, which is convenient for assembly. Exemplarily, the number of the tabs212of each cell210is two, and the number of the first gaps201is two.

FIG. 8is a schematic view of a first heat dissipation body231according to an exemplary embodiment of the present disclosure. In some embodiments, referring toFIG. 8, the first heat dissipation body231includes a first phase-change material layer232formed by the phase-change material and a first thermal-conductive-insulating-adhesive layer233encapsulating the first phase-change material layer232. The first thermal-conductive-insulating-adhesive layer233is adhered to the tab212and the battery protection plate220. The heat enters the first phase-change material layer232through the first thermal-conductive-insulating-adhesive layer233, and the first phase-change material layer232absorbs and stores the heat, so as to reduce the temperature of the tab212and the battery protection plate220. When the first heat dissipation body231extends to the plurality of first gaps201and is connected to the tab212and the battery protection plate220, the first thermal-conductive-insulating-adhesive layer233may quickly transfer the heat to the first phase-change material layer232, and the heat is evenly distributed around by the first phase-change material layer232, so as to effectively reduce the temperature of the tab212and the battery protection plate220, which is conducive to improving the charging efficiency. In addition, the way of adhering and connecting the first heat dissipation body231with the tab212and the battery protection plate220is simple, which is convenient for assembly. Exemplarily, the material of the first thermal-conductive-insulating-adhesive layer233may be a thermal conductive silica gel material.

In some embodiments, referring toFIGS. 6 and 7, the cell body211includes an encapsulation area213, the first tab portion214protrudes from the encapsulation area213, the first tab portion214is bent towards the encapsulation area213, the second tab portion215is bent away from the encapsulation area213, and a second gap202is defined between the first tab portion214and the encapsulation area213. The heat dissipation assembly230also includes a second heat dissipation body234, and the second heat dissipation body234is arranged in the second gap. Thus, the second heat dissipation body234may not only absorb the heat of the tab212to reduce the temperature of the tab212, but also improve the charging efficiency. Based on a thickness of the second heat dissipation body234, the first tab portion214of the tab212may be prevented from cracking due to excessive bending.

In some embodiments, a plurality of tabs212are provided, and a plurality of second gaps202are defined between the plurality of tabs212and the encapsulation area213, the second heat dissipation body234extends through the plurality of second gaps202, and the second heat dissipation body234is connected with the first tab portion214and the encapsulation area213. It should be noted that the encapsulation area213is formed by encapsulating a part of the tab212through an aluminum plastic film and a tab glue, such that the problem of the temperature rise also occurs at the encapsulation area213. Exemplarily, continuing to refer toFIGS. 3, 6 and 7, the second heat dissipation body234presents a plate-shaped structure. Thus, by connecting the second heat dissipation body234with the encapsulation area213and the first tab portion214, it is more conducive to effectively reducing the temperature of the encapsulation area213and the first tab portion214, and the second heat dissipation body234extends through the plurality of second gaps202, which is conducive to stably limiting the position of the tab212and avoiding the tab212from being displaced and excessively bent.

FIG. 9is a schematic view of a second heat dissipation body234according to an exemplary embodiment of the present disclosure. In some embodiments, referring toFIG. 9, the second heat dissipation body234includes a second phase-change material layer235formed by the phase-change material and a second thermal-conductive-insulating-adhesive layer236encapsulating the second phase-change material layer235. The second thermal-conductive-insulating-adhesive layer236is adhered to the first tab portion214and the encapsulation area213. The heat enters the second phase-change material layer235through the second thermal-conductive-insulating-adhesive layer236, and the second phase-change material layer235absorbs and stores the heat, so as to reduce the temperature of the tab212and the encapsulation area213. In addition, the way of adhering and connecting the second heat dissipation body234with the tab212and the encapsulation area213is simple, which is convenient for assembly. Exemplarily, the material of the second thermal-conductive-insulating-adhesive layer236may be a thermal conductive silica gel material. Exemplarily, the second heat dissipation body234may present a plate-shaped structure, as illustrated inFIG. 3. Thus, the heat is absorbed by the second thermal-conductive-insulating-adhesive layer236and the heat is evenly distributed around by the second thermal-conductive-insulating-adhesive layer236, so as to quickly reduce the temperature of the tab212and the encapsulation area213.

In the embodiments of the present disclosure, the structure of any one of the above battery assembly200is applicable to the battery assembly200including one cell210, and is also applicable to the battery assembly200including a plurality of cells210. In some embodiments, referring toFIGS. 3, 4 and 5, the battery assembly200includes at least two cells210, the at least two cells210share one battery protection plate220, and at least two first heat dissipation bodies231corresponding to the at least two cells210connected to the identical battery protection plate220are formed in one piece. Thus, the first heat dissipation body231effectively leads to a firm connection between the plurality of cells210and the battery protection plate220, and effectively dissipates the heat for the tab212and the battery protection plate220.

In some embodiments, the battery assembly200includes a first cell and a second cell. For ease of description, the cell210on a left side inFIGS. 3 to 7is used as the first cell, and the cell210on a right side is used as the second cell. The tab212of the first cell and the tab212of the second cell are opposite and connected with the identical battery protection plate220. The first heat dissipation body231of the first cell and the first heat dissipation body231of the second cell are formed in one piece, and the first heat dissipation body231is also connected with the battery protection plate220. Thus, the first heat dissipation body231not only dissipates the heat for the tab212of the first cell, the tab212of the second cell and the battery protection plate220, but also is conducive to firm fixing among them. Moreover, the first heat dissipation body231extends to the first gap201of the tab212of the first cell and the first gap201of the tab212of the second cell, and the first heat dissipation body231is connected with the battery protection plate220, such that the first heat dissipation body presents a plate-shaped structure, which is conducive for the first heat dissipation body231to absorb the heat of the tab212and the battery protection plate220and evenly distribute the heat to each position of the first heat dissipation body, so as to be further conducive to quickly reducing the temperature of the tab212and the battery protection plate220, and improving the charging efficiency.

In addition, the second gap202is defined between the tab212of the first cell and the encapsulation area213, and a second gap202is defined between the tab212of the second cell and the encapsulation area213. The second heat dissipation body234arranged in the second gap202of the first cell and the second heat dissipation body234arranged in the second gap202of the second cell may be separated, which is convenient for the assemblies between the second heat dissipation body234and the first cell, and between the second heat dissipation body234and the second cell. In addition, other structures with regard to the first cell and the second cell may refer to any one of the above embodiments. The dimensions of the first cell and the second cell may be identical or different, and the first cell and the second cell may be arranged on an identical plane or different planes, this is not limited by the present disclosure.

Exemplarily, referring toFIG. 4, at least one board surface of the first cell and at least one board surface of the second cell are arranged on an identical plane.

To sum up, in the battery assembly200and the electronic device provided by the embodiments of the present disclosure, the first heat dissipation body231is arranged in the first gap201of the tab212, and the first heat dissipation body231is connected with the battery protection plate220to firmly fix the tab212and the battery protection plate220, so as to prevent the tab212from the displacement and short circuit. The second heat dissipation body234is arranged in the second gap202defined by the tab212and the encapsulation area213, so as to prevent the tab212from being excessively bent and cracked, resulting in a failure of power transmission. The first heat dissipation body231includes a phase-change material, and the first heat dissipation body231extends through a plurality of first gaps201, the first heat dissipation body231may absorb more heat and the heat is evenly distributed around, which is conducive to reducing the temperature of the tab212and the battery protection plate220. The second heat dissipation body234includes a phase-change material, and the second heat dissipation body234extends through a plurality of second gaps202, the second heat dissipation body234may absorb more heat and the heat is evenly distributed around, which is conducive to reducing the temperature of the tab212. Through the battery assembly200, the temperature may be reduced, the charging efficiency may be improved, and the user experience may be improved.

The above embodiments of the present disclosure may be complementary for each other under the case of no conflict.

The above description is only a preferable embodiment of the present disclosure, which is not construed to limit the present disclosure. Any modification, equivalent replacement, improvement made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.