CN219106272U - Battery module and electronic equipment - Google Patents

Battery module and electronic equipment Download PDF

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Publication number
CN219106272U
CN219106272U CN202222749240.4U CN202222749240U CN219106272U CN 219106272 U CN219106272 U CN 219106272U CN 202222749240 U CN202222749240 U CN 202222749240U CN 219106272 U CN219106272 U CN 219106272U
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heat
battery module
battery
plate assembly
circuit board
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CN202222749240.4U
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Inventor
李奇峰
丁才华
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Honor Device Co Ltd
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Honor Device Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

The application provides a battery module and electronic equipment, battery module includes the electric core, the cover is established at the mount outside the electric core, install in the protection shield subassembly and the radiator unit of the electric end that meets of electric core, radiator unit is including the conducting strip that corresponds the protection shield subassembly and set up, the conducting strip is established at least one in one side of protection shield subassembly orientation first part and the one side of protection shield subassembly orientation second part, the heat accessible conducting strip that the protection shield subassembly produced is conducted to at least one in first part and the second part rapidly, thereby, the heat of protection shield subassembly is outwards given off to the time effectively, protection shield subassembly is also effectively weakened and is passed heat to the battery body, can prevent that the battery body from rising too high, with the heat dispersion of promotion battery module, make battery module maintain lower temperature throughout in the charging process, guarantee the working property of protection shield subassembly, promote the reliability and the security of battery body, and the life of extension battery body.

Description

Battery module and electronic equipment
Technical Field
The application relates to the technical field of electronic equipment, in particular to a battery module and electronic equipment.
Background
With the rapid development of electronic devices such as mobile phones, tablet computers and wearable devices, the functions of the electronic devices are more and more powerful, and functional devices integrated inside the electronic devices are more and more abundant, so that the power consumption speed of the electronic devices is increased, and therefore, the battery capacity is required to be increased and the battery charging speed is required to be increased.
The battery module arranged in the electronic equipment mainly comprises a battery cell and a protection board, wherein the protection board plays a role in protecting the battery cell in the charging and discharging process, and the problems of overcharging, overdischarging, short circuit and the like of the battery cell can be prevented. Along with the improvement of the charging speed, the charging current of the battery module is larger and larger, and the heat generated by the battery core and the protection plate in the charging process is higher and higher. In addition, in order to increase the space of electric core, the protection shield tends to miniaturized design for the temperature rise range of protection shield is more violent, influences the work efficiency of the internal device of protection shield, and the heat transfer of protection shield to electric core, and the life and the security of electric core can be influenced to the potential.
However, in the current battery module, the protection board has no effective heat dissipation path, and the heat of the protection board in the working process is higher and is easy to be transferred to the battery cell, so that the battery module has high temperature risk.
Disclosure of Invention
The application provides a battery module and electronic equipment, battery module's protection shield subassembly can in time dispel the heat, and the temperature of protection shield subassembly is lower and be difficult for transferring heat to the electric core, and battery module's heat dispersion is good, the security is high.
In one aspect, the present application provides a battery module, installed between a first part and a second part of an electronic device, the battery module including: the battery cell, the fixing frame, the protection board component and the heat dissipation component;
The two side surfaces of the battery core in the thickness direction are a first surface and a second surface respectively, the first surface faces the first component, and the second surface faces the second component; the fixing frame is connected to the periphery of the battery cell, the fixing frame comprises a mounting part, the mounting part is close to the electric connection end of the battery cell, the mounting part is positioned on one side where the first surface is positioned, the protection board assembly is arranged at the electric connection end and attached to the mounting part, and the protection board assembly is electrically connected with the battery cell;
the heat dissipation assembly includes a heat conduction sheet disposed between the mounting portion and the first member, and/or the heat conduction sheet is disposed between the protection plate assembly and the second member.
The application provides a battery module, including the electric core, the cover is established at the mount outside the electric core, install in the protection shield subassembly and the radiator unit of the electric end that meets of electric core, radiator unit is including the conducting strip that corresponds the protection shield subassembly setting, the conducting strip is established at least one in one side of protection shield subassembly orientation first part and the one side of protection shield subassembly orientation second part, the heat that the protection shield subassembly produced can be conducted to at least one in first part and the second part rapidly through the conducting strip, thereby, and the heat of protection shield subassembly is outwards given off to the time effectively, protection shield subassembly is also effectively weakened and is passed heat to the battery body, can prevent that the battery body temperature rise is too high, in order to promote battery module's heat dispersion, make battery module maintain lower temperature throughout in the charging process, guarantee protection shield subassembly's working property, promote battery body's reliability and security, battery body's life is prolonged.
In one possible implementation mode, the protection board assembly comprises a flexible circuit board and a packaging body, wherein one side surface of the flexible circuit board is attached to the mounting part, the packaging body is connected to one side surface of the flexible circuit board, which is away from the mounting part, the side surface of the packaging body, which is away from the flexible circuit board, is a heat transfer surface, and the heat conducting sheet is positioned between the heat transfer surface and the second component;
the packaging body comprises a printed circuit board and a packaging layer, wherein one side surface of the printed circuit board is attached to the flexible circuit board, a device is arranged on one side surface of the printed circuit board, which is away from the flexible circuit board, and the packaging layer is arranged on one side of the printed circuit board, which is away from the flexible circuit board, and covers the device.
The protection board component monitors the running state of the battery cell through the device arranged on the printed circuit board, the device is protected through covering the packaging layer on one side of the printed circuit board, which is provided with the device, the printed circuit board and the packaging layer form a packaging body, the packaging body is arranged on the flexible circuit board, and the battery cell is electrically connected with other parts through the flexible circuit board. The flexible circuit board is attached to the mounting part on the surface of one side, deviating from the packaging body, of the flexible circuit board, the packaging body is a heat transfer surface on the surface of one side, deviating from the flexible circuit board, of the flexible circuit board, and heat of the protective board assembly is conducted to the second component through the heat conducting fin arranged between the heat transfer surface and the second component.
In one possible implementation manner, the flexible circuit board sequentially comprises a first section, a middle section and a second section along the length direction, the packaging body is connected to the middle section, the first section and the second section are bent towards the side of the packaging body where the heat transfer surface is located and cover the two side areas of the heat transfer surface, the middle area of the heat transfer surface is exposed between the first section and the second section, and the heat conducting sheet is arranged corresponding to the middle area of the heat transfer surface.
Through installing the encapsulation body at the interlude of flexible circuit board, flexible circuit board's first section and second section bend respectively to cover the both sides region of encapsulation body, can reduce the space that the protection shield subassembly wholly occupies to guarantee that flexible circuit board's first section and second section have sufficient activity space to realize the electricity of battery module and other parts and connect. By arranging the heat conductive sheet in correspondence to the intermediate area of the heat transfer surface of the package body exposed between the first and second sections, heat of the protective plate assembly is transferred to the second member through the heat conductive sheet without affecting movement of the first and second sections of the flexible circuit board.
In one possible embodiment, the battery module further includes an insulating film having one side connected to a surface of the mounting portion facing the first member, the other side of the insulating film bypassing the top end of the protective plate assembly and extending to cover the heat transfer surface of the package body, the first and second sections being located outside the insulating film;
Wherein, the conducting strip pastes the surface of establishing at the insulating film.
Through the outside parcel insulating film of the position of corresponding the encapsulation body in the protection plate subassembly, the insulating film can form the protection to the position of encapsulation body place, keeps apart through insulating film with insulating between battery module's the utmost point ear and the first part to reduce the short circuit risk of utmost point ear. Wherein, through making the first section and the second section of flexible circuit board stretch out outside the insulating film, avoid causing the restriction to the deformation of first section and second section, remove.
In one possible embodiment, the heat conductive sheet disposed between the mounting portion and the first member includes a first heat conductive sheet and a second heat conductive sheet, the first heat conductive sheet and the second heat conductive sheet being respectively attached to both sides of the insulating film in a length direction, and an avoidance space being provided between the first heat conductive sheet and the second heat conductive sheet.
Through setting up first conducting strip and second conducting strip between installation department and first part, paste first conducting strip and second conducting strip and establish the both sides at the length direction of insulating film, can provide between the two and dodge the space to supply to wear out by crossing battery module's flexible circuit board, and, the area that first conducting strip and second conducting strip wholly covered is great, can guarantee the heat conduction effect.
In one possible embodiment, the thermally conductive sheet is a graphite sheet.
The graphite flake can evenly conduct heat along two directions, and heat conduction efficiency is high, can improve the radiating efficiency of protection shield subassembly, reduces the temperature of protection shield subassembly, when maintaining the work efficiency of protection shield subassembly, reduces the heat of protection shield subassembly to the electric core transmission, ensures the operational safety of electric core.
In one possible embodiment, the battery module further includes a cushion pad interposed between the protective plate assembly and the end face of the battery cell.
Through pressing from both sides the blotter between the terminal surface of protection plate subassembly and electric core, the protection plate subassembly relies on installation department and buffer pad to fix the electric end at electric core, can ensure that protection plate subassembly is fixed firm to, the external force that the blotter can cushion protection plate subassembly received promotes the reliability of protection plate subassembly.
In one possible embodiment, the cushion has a plurality of non-interconnected pores distributed therein.
Through setting up the blotter into loose porous structure, the thermal conductivity of heat at the position of the gas pocket place in the blotter is low, reducible blotter's heat transfer volume, the heat of reduction protection shield subassembly to electric core transmission reduces the high temperature risk of electric core.
In one possible embodiment, the air holes of adjacent layers are staggered along the thickness of the cushion.
Among the multiple layers of air holes arranged along the thickness direction of the cushion pad, the air holes of adjacent layers are staggered, so that the distribution density of the air holes is increased, the length of a transmission path of heat in the cushion pad is also increased, the heat transfer efficiency between the protection plate and the battery cell can be reduced, and the heat transferred from the protection plate assembly to the battery cell is reduced.
In one possible embodiment, at least one side surface of the cushion pad in the thickness direction is provided with a plurality of grooves at intervals, and the grooves are recessed inward from the surface of the cushion pad.
Through set up the recess at least one side surface in the thickness direction of blotter to reduce the area of contact between the parts of blotter and corresponding side, reduce the thermal conductivity between protection shield subassembly and the electric core, reduce the heat that protection shield subassembly transmitted to the electric core.
In one possible embodiment, more than two rows of grooves are arranged at intervals along the width direction of the cushion pad, and the grooves of adjacent rows are staggered.
Through arranging more than two rows of grooves at intervals along the width direction of the buffer pad, and staggering the grooves of adjacent rows, the arrangement density of the grooves can be increased, the occupied area of the grooves on the surface of the buffer pad is increased, the contact area between the buffer pad and the parts on the corresponding side is reduced, and the heat transfer between the protection plate component and the battery cell is reduced.
In one possible embodiment, at least one side surface of the cushion pad in the thickness direction is provided with a plurality of protrusions at intervals, and the protrusions extend in the thickness direction of the cushion pad.
Through set up the projection at least one side surface in the thickness direction of blotter to reduce the area of contact between the parts of blotter and corresponding side, reduce the thermal conductivity between protection shield subassembly and the electric core, reduce the heat that protection shield subassembly transmitted to the electric core.
In one possible embodiment, more than two rows of the posts are arranged at intervals along the width direction of the cushion, and the posts in adjacent rows are staggered.
Through arranging more than two rows of convex columns at intervals along the width direction of the buffer cushion, and staggering the convex columns of adjacent rows, the arrangement density of the convex columns can be increased, and the stability of the buffer cushion on the support of the protection plate component is ensured on the basis of reducing the contact area between the buffer cushion and the corresponding side part.
In one possible embodiment, the cross-sectional area of the stud increases gradually from one end of the stud facing away from the bumper pad to the other end of the stud.
Through making the projection from the one end that deviates from the blotter to the other end, its cross-sectional area increases gradually, can ensure to fix the protection shield subassembly firm to, can maintain certain clearance between the adjacent projection, play the area of contact between the parts that reduces blotter and corresponding side.
In one possible embodiment, the cushioning pad is a silicone pad or rubber pad.
In one possible implementation manner, the electric connection end of the electric core is provided with an electric core tab, the protection board assembly is provided with a connection tab, and the connection tab is correspondingly connected with the electric core tab.
In one possible implementation, the battery cell tab is located at the side where the mounting portion is located and extends in a direction away from the power receiving end of the battery cell; the connecting lug is arranged on one side surface of the protective plate assembly facing the mounting part and extends out in a direction away from the electric connection end of the battery cell; the battery cell tab and the connection tab are bent towards each other and are in fit connection.
Through setting up the battery cell tab in the one side at installation department place and making it stretch out to the direction that deviates from the battery cell, set up the connection tab towards a side surface of installation department on the flexible circuit board of protection board subassembly, be convenient for the battery cell tab with connect the connection of tab, battery cell tab and connection tab one-to-one, both are bent to the other side and the laminating is connected together.
In one possible implementation manner, a glue layer is arranged between the protection plate assembly and the mounting part, and the battery cell lugs and the connection lugs are respectively adhered to two side surfaces of the glue layer.
Through setting up the glue film between the flexible circuit board of protection board subassembly and the installation department of mount, flexible circuit board bonds together with the installation department, realizes fixing protection board subassembly on the installation department. And the battery cell electrode lugs and the connection electrode lugs are respectively adhered to the two sides of the adhesive layer, so that the battery cell electrode lugs and the connection electrode lugs are fixed.
In another aspect, the present application provides an electronic device comprising a first component, a second component, and a battery module as described above, wherein the battery module is mounted between the first component and the second component.
The application provides electronic equipment, including first part, the second part and be located the battery module between first part and the second part, battery module includes the electric core, the cover is established at the mount outside the electric core, install the protection shield subassembly and the radiator unit of the electric end that meets of electric core, radiator unit includes the conducting strip that corresponds protection shield subassembly and set up, the conducting strip is established at least one in one side towards first part and the protection shield subassembly one side towards the second part of protection shield subassembly, the heat that the protection shield subassembly produced can be conducted to at least one in first part and the second part rapidly through the conducting strip, thereby, and the heat of the protection shield subassembly is outwards given off in time, also effectively weaken protection shield subassembly and passed heat to the battery body, can prevent that the battery body temperature rise is too high, with the heat dispersion of promoting the battery module, make the battery module maintain lower temperature in charging process all the time, the working property of protection shield subassembly, the reliability and the security of promotion battery body, the life of extension battery body.
In one possible embodiment, the electronic device further includes a heat sink attached between the battery module and the second component, the heat sink extending from one end of the protective plate assembly of the battery module to the other end thereof to cover at least a portion of the second surface of the battery cell;
wherein, the conducting strip that sets up the side of protection plate subassembly towards the second part is laminated with the fin.
The heat in the electronic equipment is conducted to the second component through the heat radiating fin, and the heat is radiated outwards through the second component, so that the heat radiation of the whole electronic equipment is realized. The radiating fin extends from one end of the battery module where the protective plate is located to the other end and covers at least part of the second surface of the battery core so as to radiate the battery module. The heat of the protection plate assembly is conducted to the radiating fins by the heat conducting fins through the fact that the heat conducting fins arranged on one side, facing the second component, of the protection plate assembly is attached to the radiating fins, and the purpose of radiating the heat of the protection plate assembly is achieved.
In one possible embodiment, the heat sink includes a first protective layer, a thermally conductive layer, and a second protective layer stacked in that order, the first protective layer facing the protective plate assembly, the second protective layer facing the second component.
The heat dissipation layer realizes heat conduction through the high thermal conductivity of heat conduction layer, and the first protective layer and the second protective layer that are located the heat conduction layer both sides are used for protecting the heat conduction layer, guarantee the wholeness of fin, prevent that the heat conduction layer in the middle from being destroyed, promote the intensity of fin.
In one possible embodiment, the first protective layer is provided with an avoidance opening, the avoidance opening exposes the heat conducting layer, the avoidance opening corresponds to the heat conducting sheet, and the heat conducting sheet extends into the avoidance opening to be attached to the heat conducting layer.
The area corresponding to the heat conducting fin on the first protective layer is provided with the avoidance opening, and the heat conducting layer is exposed, so that the heat conducting fin can extend into the avoidance opening to be directly attached to the heat conducting layer, the heat transfer efficiency between the protective plate assembly and the second component is enhanced, and the heat dissipation efficiency and the heat dissipation effect of the protective plate assembly are improved.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 2 is an exploded view of the electronic device shown in FIG. 1;
fig. 3 is a schematic view of a battery module;
fig. 4 is a front view of a battery module according to an embodiment of the present application;
fig. 5 is a rear view of the battery module of fig. 4;
fig. 6 is a top view of the battery module of fig. 4 assembled to a first member;
fig. 7 is a rear view of a battery body of the battery module according to the embodiment of the present application;
fig. 8 is a top view of the battery body of fig. 7;
FIG. 9 is a schematic view of the structure of the cushion of FIG. 8;
FIG. 10 is a schematic cross-sectional view of the cushion of FIG. 9 at A-A;
Fig. 11 is a rear view of another battery body of the battery module according to the embodiment of the present application;
fig. 12 is a top view of the battery body of fig. 11;
FIG. 13 is a schematic view of the structure of the cushion of FIG. 12;
FIG. 14 is a schematic cross-sectional view of the cushion of FIG. 13 at B-B;
fig. 15 is a top view of a protective plate assembly provided in an embodiment of the present application;
fig. 16 is a front view of the protective plate assembly of fig. 15;
fig. 17 is a rear view of the protective plate assembly of fig. 15;
fig. 18 is a front view of a protective plate assembly according to an embodiment of the present application mounted to a battery body;
FIG. 19 is a top view of FIG. 18;
fig. 20 is a schematic view of a structure in which an insulating film is wrapped around the protective plate assembly of fig. 19;
fig. 21 is a front view of an assembled insulating film provided in an embodiment of the present application;
fig. 22 is a rear view of an assembled insulating film according to an embodiment of the present application.
Reference numerals illustrate:
1-an electronic device; 1 a-a first part; 1 b-a second component;
10-a display screen; 20-a housing; 30-a main board; 40-a battery module; 50-a camera module; 60-cooling fins;
21-a middle frame; 21 a-a frame portion; 21 b-a middle plate portion; 22-a rear cover; 61-a first protective layer; 62-a heat conducting layer; 63-a second protective layer;
100-battery body; 200-a protective plate assembly; 300-cushion pad; 400-heat conductive sheet; 500-glue layers; 600-insulating film;
110-cell; 120-fixing frame; 210-a flexible circuit board; 220-packaging body; 310-groove; 320-pores; 330-convex columns; 410-a first heat conductive sheet; 420-a second heat conductive sheet;
110 a-a first surface; 110 b-a second surface; 111-cell lugs; 121-an installation part; 211-first section; 212-an intermediate section; 213-second stage; 201-an extension; 221-a printed circuit board; 222-an encapsulation layer;
1111-positive tab; 1112-negative electrode ear; 2121-connection tabs.
Detailed Description
The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.
The embodiment of the application provides electronic equipment which can be consumer electronic products. Exemplary electronic devices include, but are not limited to, portable electronic devices that are cell phones, tablet computers (tablet personal computer), wearable devices, netbooks, POS (Point of sales) machines, personal digital assistants (personal digital assistant, PDAs), virtual Reality (VR) devices, augmented reality (augmented reality, AR) devices, laptop computers (laptop computers), notebook computers, personal computers, and the like.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Referring to fig. 1, taking an electronic device 1 as an example of a mobile phone, the electronic device 1 may include a display screen 10 and a housing 20. One side surface of the display screen 10 is used to display information and provide an interactive interface for a user, and typically the side surface of the display screen 10 is defined as its front surface and the other side surface of the display screen 10 opposite to its front surface is defined as its rear surface. The casing 20 is disposed around the periphery and the back of the display screen 10, and is used for supporting and fixing the display screen 10, and the front of the display screen 10 is exposed outside the casing 20, so that a user can watch the display content of the display screen 10 or perform input operation on the electronic device 1. The display screen 10 and the housing 20 together enclose an accommodating space, and some components of the electronic device 1 are disposed in the accommodating space, for example, components such as a circuit board, a battery module, a camera module, a speaker module, and a microphone are disposed in the accommodating space.
In general, a surface on which the display screen 10 is located is defined as a front surface of the electronic apparatus 1, and another surface of the electronic apparatus 1 opposite to the front surface thereof is defined as a rear surface thereof. When each component in the electronic apparatus 1 is described below, the "front" of the component refers to a side surface of the component facing the front of the electronic apparatus 1, and the "back" of the component refers to a side surface of the component facing the back of the electronic apparatus 1, corresponding to the front and back of the electronic apparatus 1.
Fig. 2 is an exploded view of the electronic device shown in fig. 1. Referring to fig. 2, the housing 20 of the electronic device 1 may include a middle frame 21 and a rear cover 22, the rear cover 22 being positioned at the rear surface of the electronic device 1, the middle frame 21 being connected between the display screen 10 and the rear cover 22, the display screen 10 being supported at the front surface of the middle frame 21, and the rear cover 22 being connected at the rear surface of the middle frame 21. The middle frame 21 may include a frame portion 21a and a middle plate portion 21b, where the frame portion 21a is enclosed on the periphery of the display screen 10 and the rear cover 22, the middle plate portion 21b is located in an area enclosed by the frame portion 21a, and an edge of the middle plate portion 21b is connected to an inner sidewall of the frame portion 21a, for example, the middle plate portion 21b and the frame portion 21a may be an integrally formed structure.
For example, the entire display screen 10 may be supported on the middle plate portion 21b of the middle frame 21, and the edge of the display screen 10 is overlapped on the front end surface of the frame portion 21a of the middle frame 21 (the end surface of the side of the frame portion 21a facing the front surface of the electronic device 1), and the display screen 10 may be fixed by linking with the middle frame 21 through, for example, a frame adhesive. The edge of the rear cover 22 may overlap the rear end surface of the frame portion 21a of the center 21 (the end surface of the side of the frame portion 21a facing the back of the electronic apparatus 1), and may be connected and fixed to the frame portion 21a by a frame adhesive. A gap is provided between the middle plate portion 21b of the middle frame 21 and the rear cover 22, and the gap forms the aforementioned accommodation space so as to provide a member in the accommodation space between the middle plate portion 21b of the middle frame 21 and the rear cover 22.
Fig. 2 shows a main board 30, a battery module 40, and a camera module 50 disposed in the accommodation space. The main board 30 is a core control part of the electronic apparatus 1, and is typically integrated with a central processing unit (Central Processing Unit/Processor, CPU), a graphics Processor, and other devices, and the main board 30 is, for example, a printed circuit board (Printed circuit boards, PCB). The battery module 40 is used for supplying power to the whole electronic device 1, the battery module 40 can be electrically connected with the main board 30, and the battery module 40 can supply power to other components through the electrical connection between the main board 30 and the other components. The camera module 50 is electrically connected to the motherboard 30, and the camera module 50 is used for capturing, transmitting video, capturing still images, and the like. In addition, other PCBs, for example, PCBs (not shown) electrically connected to the display screen 10 may be provided in the accommodation space in addition to the main board 30, and the other PCBs other than the main board 30 may be defined as sub-boards for convenience of explanation, and the sub-boards and the main board 30 may be connected by flexible circuit boards (Flexible Printed Circuit, FPCs). Of course, other components not shown in the drawings, such as the aforementioned speaker module, microphone, and the like, may be provided in the accommodation space.
In the present embodiment, the structure of the electronic device 1 will be described by taking a mobile phone as an example, the housing 20 of the mobile phone generally includes a middle frame 21 and a rear cover 22, and most of the components inside the mobile phone are disposed in a containing space defined by the middle frame 21 and the rear cover 22, in other words, most of the components are disposed in a space between the middle frame 21 and the rear cover 22. For other electronic devices 1 such as wearable devices, tablet computers, netbooks, etc., some electronic devices 1 have a structure similar to that of a mobile phone, and some electronic devices 1 have a structure different from that of a mobile phone, for example, a housing 20 of the electronic device 1 may be an integrated structure, a housing space is enclosed between the housing 20 and a display screen 10, and components such as a circuit board, a battery module 40, a camera module 50, a speaker module, a microphone, etc. may be disposed in the space between the display screen 10 and the housing 20.
In this regard, the electronic apparatus 1 is defined as including a first component 1a and a second component 1b, the first component 1a and the second component 1b being configured to collectively enclose an accommodating space, and components such as a circuit board, a battery module 40, an imaging module 50, a speaker module, and a microphone being disposed in the space between the first component 1a and the second component 1 b. Taking a mobile phone as an example, the first component 1a may be a middle frame 21, and the second component 1b may be a rear cover 22.
With the continuous progress of technology and the increasing demands of consumers, the functions of the electronic device 1 are more and more powerful, and accordingly, the number and types of components arranged inside the electronic device 1 are more and more, and the internal integration level of the electronic device 1 is higher and more, so that the power consumption speed of the electronic device 1 is increased, and for this reason, measures such as increasing the capacity and increasing the charging speed of the battery module 40 are generally required to meet the performance demands of the electronic device 1.
Along with the increase of the capacity and the acceleration of the charging speed of the battery module 40, the charging current of the battery module 40 is larger and larger, and the heat generated by the battery module 40 in the charging process is more and more, so that the charging efficiency and the safety of the battery module 40 are ensured, the service life of the battery module 40 is ensured, and the heat dissipation structure of the battery module 40 is required to be designed, so that the heat dissipation efficiency of the battery module 40 is improved, and the battery module 40 always maintains a lower temperature in the working process.
Fig. 3 is a schematic structural view of a battery module. Referring to fig. 3, the battery module 40 generally includes a battery body 100 and a protection plate assembly 200. One end of the battery body 100 is typically an electrical connection end thereof, which means that the battery body 100 is typically electrically connected to other components (e.g., the main board 30) through the end, and electrodes (including a positive electrode and a negative electrode) of the battery body 100 are disposed at the electrical connection end of the battery body 100, and the battery body 100 realizes current transmission with the other components through the electrical connection end thereof, thereby realizing charging and discharging of the battery body 100. The protection plate assembly 200 is disposed at the power receiving end of the battery body 100, and the battery body 100 is connected with other components through the protection plate assembly 200, in other words, the protection plate assembly 200 is connected with the electrode of the battery body 100, and the protection plate assembly 200 is electrically connected with other components, current is transmitted between the battery body 100 and other components through the protection plate assembly 200, and the battery protection plate plays a role in protecting the battery body 100 during the charge and discharge processes so as to prevent the problems of overcharge, overdischarge, short circuit and the like.
Continuing with the example of the mobile phone, as shown in fig. 2 and 3, the battery body 100 may be disposed along the length direction of the electronic device 1, that is, the length direction of the battery body 100 may be set along the length direction of the electronic device 1, the power receiving end of the battery body 100 may be one end of the battery body in the length direction, and the protection board assembly 200 is located at one end of the battery body in the length direction. In general, the power receiving end of the battery body 100 is disposed toward the main board 30 so that the protection board assembly 200 is connected to the main board 30, and the sub-board is positioned at the other side of the battery module 40 opposite to the protection board assembly 200, and the main board 30 is connected to the sub-board through an FPC crossing the battery module 40.
Of course, for mobile phones or other electronic devices 1 with different configurations, the battery body 100 may be disposed along other directions, for example, the battery body 100 is disposed along the width direction of the electronic device 1, and the power receiving end of the battery body 100 is not necessarily one end in the length direction thereof, but may be one end in the width direction thereof, and accordingly, the protection plate assembly 200 may be located at one end in the width direction of the battery body 100, which is not particularly limited in this embodiment.
The cushion 300 is typically disposed between the protective plate assembly 200 and the end surface of the battery body 100, and the cushion 300 is, for example, a silica gel pad or a rubber pad, and the cushion 300 can elastically deform to play a role of buffering, so that the protective plate assembly 200 can be stably and firmly connected to the power receiving end of the battery body 100.
As the charging current of the battery module 40 increases, the heat generated from the battery body 100 and the protection plate assembly 200 during the charging process increases. In addition, in order to ensure the capacity of the battery module 40, the volume of the battery module 40 is generally increased, the installation space of the battery module 40 is increased, and under the trend of miniaturization of the electronic device 1, the protection board assembly 200 is generally miniaturized to reserve enough installation space for the battery module 40, so that the temperature rise of the protection board assembly 200 is more severe, the working efficiency of the internal devices of the protection board assembly 200 is affected, and the protection effect of the protection board assembly 200 on the battery body 100 is not reliably ensured.
However, in the related art battery module, the protection plate assembly 200 lacks an effective heat dissipation path during the rapid charge process, the temperature rise of the protection plate assembly 200 is high, and the stability of the operation of the protection plate assembly 200 is affected, and the protection effect of the protection plate assembly 200 on the battery body 100 is correspondingly impaired. In addition, the heat generated by the protection plate assembly 200 is rapidly transferred to the battery body 100, so that the temperature rise of the battery body 100 is increased, high-temperature risks are easily brought to the battery body 100, the reliability and safety of the battery body 100 are not effectively ensured, and the service life of the battery body 100 is also influenced.
In view of this, the embodiment of the present application improves the battery module 40 of the electronic device 1, and radiates heat to the battery module 40 by providing the heat radiation assembly, the heat radiation assembly includes the heat conducting fin corresponding to the protective plate assembly 200, the heat conducting fin is provided on at least one of the side of the protective plate assembly 200 facing the first component 1a and the side of the protective plate assembly 200 facing the second component 1b, the heat generated by the protective plate assembly 200 can be rapidly conducted to at least one of the first component 1a and the second component 1b through the heat conducting fin, thereby, the heat of the protective plate assembly 200 is effectively radiated outwards, the heat transferred from the protective plate assembly 200 to the battery body 100 is effectively weakened, the heat of the battery body 100 is prevented from being excessively raised, the heat radiation performance of the battery module 40 is improved, the battery module 40 always maintains a lower temperature in the charging process, the working performance of the protective plate assembly 200 is guaranteed, the reliability and the safety of the battery body 100 are improved, and the service life of the battery body 100 is prolonged.
The battery module 40 of the electronic device 1 of the present embodiment is described in detail below.
Fig. 4 is a front view of a battery module according to an embodiment of the present application; fig. 5 is a rear view of the battery module of fig. 4; fig. 6 is a top view of the battery module of fig. 4 assembled to the first member.
Referring to fig. 4 to 6, the battery module 40 of the present embodiment, the battery body 100 of the battery module 40 specifically includes a battery cell 110 and a fixing frame 120, the battery cell 110 is a main structure of the battery body 100 for realizing the transmission and collection of current, thereby realizing the charge and discharge functions of the battery body 100, the fixing frame 120 is disposed at the outer circumference of the battery cell 110, the fixing frame 120 is used for fixing the battery cell 110 between the first member 1a (e.g., the middle frame 21) and the second member 1b (the rear cover 22), and the fixing frame 120 may serve as a mounting base of the protection plate assembly 200, in other words, the protection plate assembly 200 may be mounted on the fixing frame 120 and thus realize the electrical connection with the battery cell 110.
The fixing frame 120 includes a mounting portion 121 at the power receiving end of the battery cell 110, and the protection plate assembly 200 is mounted on the mounting portion 121. The battery module 40 shown in fig. 4 corresponds to a first surface 110a of the battery cell 110 in the thickness direction, where the first surface 110a of the battery cell 110 is a surface of a side of the first surface facing the first component 1a (for example, the middle frame 21), and corresponds to the first surface 110a of the battery cell 110 being a front surface thereof; the battery module 40 shown in fig. 5 corresponds to the second surface 110b of the battery cell 110 in the thickness direction, and the second surface 110b of the battery cell 110 is a surface facing the second component 1b (e.g., the rear cover 22), which corresponds to the second surface 110b of the battery cell 110 being a back surface thereof; in the battery module 40 shown in fig. 6, a surface of the battery module 40 facing downward in the paper is a first surface 110a thereof, the first surface 110a of the battery module 40 faces the first member 1a (e.g., the center 21) and is attached to the center 21, a surface of the battery module 40 facing upward in the paper is a second surface 110b thereof, and the second surface 110b of the battery module 40 faces the second member 1b (e.g., the rear cover 22), the second member 1b not being shown.
As shown in fig. 4 to 6, for the mounting portion 121 of the fixing frame 120 located at the power receiving end, the mounting portion 121 may be located at a side of the first surface 110a of the battery cell 110, that is, the mounting portion 121 is disposed near the first component 1 a. Taking the electrical connection end of the electrical core 110 as one end in the length direction, for example, the mounting portion 121 is located at one end in the length direction of the electrical core 110, and the mounting portion 121 is close to the first component 1a, for example, the mounting portion 121 may be extended along the width direction of the electrical core 110, and the mounting portion 121 may extend in a direction away from the electrical connection end of the electrical core 110, and the protection board assembly 200 may be attached to a surface of the mounting portion 121 facing the second component 1b, for example, so as to fix the protection board assembly 200.
In order to timely dissipate the heat generated by the protection plate assembly 200, in the present embodiment, the battery module 40 further includes a heat conducting sheet 400 disposed for the protection plate assembly 200, the heat conducting sheet 400 is disposed on at least one of a side of the protection plate assembly 200 facing the first component 1a and a side of the protection plate assembly 200 facing the second component 1b, and the heat generated by the protection plate assembly 200 can be rapidly conducted to at least one of the first component 1a and the second component 1b through the heat conducting sheet 400. The heat generated by the protection board assembly 200 is conducted to the outside through the heat conducting fin 400, so that the heat generated by the protection board assembly 200 is taken away quickly and timely, the heat conducting fin 400 provides a heat dissipation path for the protection board assembly 200, the heat of the protection board assembly 200 is effectively dissipated, the temperature of the protection board assembly 200 can be reduced, and the protection board assembly 200 is maintained at a proper temperature, so that the working efficiency of the protection board assembly 200 is not affected by high temperature.
In addition, the heat of the protection board assembly 200 is timely and effectively led out through the heat conducting fin 400, the residual heat on the protection board assembly 200 is less, the heat transferred from the protection board assembly 200 to the battery cell 110 is greatly reduced, the battery cell 110 is maintained at a lower working temperature, the good performance of the battery cell 110 is maintained in the charging and discharging process of the battery, particularly in the charging process of the battery, and the high-temperature risk of the battery cell 110 is avoided.
On the premise that timely and effective heat conduction from the protective plate assembly 200 can be ensured, the heat conducting sheet 400 may be provided only on the side of the protective plate assembly 200 facing the first member 1a, or the heat conducting sheet 400 may be provided only on the side of the protective plate assembly 200 facing the second member 1 b. In order to enhance the heat dissipation effect of the protection plate assembly 200, the heat conductive sheet 400 may be disposed on the side of the protection plate assembly 200 facing the first member 1a, and the heat conductive sheet 400 may be disposed on the side of the protection plate assembly 200 facing the second member 1 b.
Exemplary, the heat conducting sheet 400 may be a graphite sheet, and the graphite sheet may conduct heat uniformly along two directions, so that the heat conducting efficiency is high, heat of the protection board assembly 200 can be conducted to the outside rapidly and efficiently, the heat dissipation efficiency of the protection board assembly 200 is improved, the temperature of the protection board assembly 200 is reduced, the working efficiency of the protection board assembly 200 is maintained, the heat transferred from the protection board assembly 200 to the battery cell 110 is reduced, and the working safety of the battery cell 110 is ensured. And, the heat conductive sheet 400 occupies a small space and is light in weight, and satisfies the requirements of the electronic device 1 with high integration and light and thin.
Of course, in other examples, the heat conductive sheet 400 may be made of a metal material with good heat conductivity, for example, the heat conductive sheet 400 may be made of copper, aluminum alloy, silver, or the like. Alternatively, the heat conductive sheet 400 may be made of a material such as a heat conductive silicone gel or a heat conductive silicone grease. The heat conductive sheet 400 is hereinafter described as a graphite sheet.
As shown in fig. 4 and 6, for the heat conducting sheet 400 disposed on the side of the protection plate assembly 200 facing the first component 1a (e.g., the middle frame 21), the heat conducting sheet 400 may be directly attached to the first component 1a, and the heat generated by the protection plate assembly 200 is directly conducted to the first component 1a through the heat conducting sheet 400 and then dissipated to the outside through the second component 1 b.
As shown in fig. 5 and 6, in some embodiments, in order to achieve heat dissipation of the electronic device 1 as a whole, a heat sink 60 is often further disposed between the battery module 40 and the second component 1b (e.g., the rear cover 22), and in fig. 5, the heat sink 60 is illustrated with a dashed frame for clarity of showing the structure of the protection plate assembly 200. For example, the electronic device 1 generally has the greatest heat generation amount of the main board 30 with the core power component, so that the heat sink 60 often covers the main board 30, the heat sink 60 extends from the side of the main board 30 to the battery module 40, and the heat sink 60 extends to cover the protection board assembly 200 and at least part of the second surface 110b of the battery module 110, so as to conduct the heat of the main board 30 and the battery module 40 to the second component 1b, and then radiate the heat outwards through the second component 1 b.
The heat sink 60 may be attached to a surface of the second member 1b facing the battery module 40 by means of adhesion, for example, and the heat sink 60 may be in no connection with the battery module 40, and the heat generated from the battery module 40 may be transferred to the second member 1b by means of contact between the heat sink 60 and the battery module 40.
For the heat-conducting sheet 400 disposed on the side of the protection plate assembly 200 facing the second component 1b, the heat-conducting sheet 400 may be attached to the heat-radiating sheet 60, and the heat of the protection plate assembly 200 is conducted to the heat-radiating sheet 60 through the heat-conducting sheet 400, and then conducted to the second component 1b through the heat-radiating sheet 60, and finally radiated to the outside through the second component 1b.
Referring to fig. 6, as an example, the heat sink 60 may include a first protective layer 61, a heat conductive layer 62, and a second protective layer 63 sequentially stacked, the first protective layer 61 facing the protective plate assembly 200, and the second protective layer 63 facing the second member 1b and being connected to the second member 1b. The heat conductive layer 62 is made of a material with high thermal conductivity, for example, the heat conductive layer 62 is a graphite layer, and the heat sink 60 mainly relies on the heat conductive layer 62 to conduct heat. The first protective layer 61, the second protective layer 63 and the heat conducting layer 62 form a whole, so that the integrity of the heat sink 60 is ensured, the structural strength of the heat sink 60 is improved, and the first protective layer 61 and the second protective layer 63 on two sides of the heat conducting layer 62 can protect the middle heat conducting layer 62 from being damaged. Illustratively, the first protective layer 61 and the second protective layer 63 may each be a plastic layer.
The heat conducting performance of the first protective layer 61 and the second protective layer 63 covered on two sides of the heat conducting layer 62 is often inferior to that of the heat conducting layer 62, in order to improve the performance of the protective plate assembly 200, in some embodiments, an avoidance opening may be formed on the first protective layer 61 facing the protective plate assembly 200, the avoidance opening is set corresponding to the heat conducting strip 400, and the avoidance opening exposes the heat conducting layer 62, and the heat conducting strip 400 extends into the avoidance opening to be attached to the exposed heat conducting layer 62. In this way, the heat of the protection plate assembly 200 can be directly transferred to the heat conductive layer 62 of the heat sink 60 through the heat conductive sheet 400, so as to enhance the heat transfer efficiency between the protection plate assembly 200 and the second member 1b, thereby improving the heat dissipation efficiency and heat dissipation effect of the protection plate assembly 200.
Fig. 7 is a rear view of a battery body of the battery module according to the embodiment of the present application; fig. 8 is a top view of the battery body of fig. 7. Referring to fig. 7, which shows a side surface of the battery body 100 facing the second component 1b (e.g., the rear cover 22), the power receiving end of the battery cell 110 may be further attached with a buffer pad 300, and the buffer pad 300 may be adhered to the end surface of the battery cell 110, for example, by glue, referring to fig. 8, the buffer pad 300 is located on a side of the mounting portion 121 of the fixing frame 120 facing the second component 1b, and referring to fig. 5 and 6, the protection plate assembly 200 is attached to a side surface of the mounting portion 121 facing the second component 1b, and the bottom of the end surface of the protection plate assembly 200 facing the battery cell 110 is also abutted to the buffer pad 300, so as to firmly mount the protection plate assembly 200.
The cushion 300 may be made of a material having good elastic properties, for example, the cushion 300 may be a silica gel pad or a rubber pad. Thus, when the protection board assembly 200 is mounted at the power connection end of the battery cell 110, the protection board assembly 200 can press the buffer pad 300 by means of pressure, so that a certain compression amount is generated by the buffer pad 300, the protection board assembly 200 is tightly attached to the buffer pad 300, and the protection board assembly 200 is stably mounted at the power connection end of the battery cell 110 through the mounting part 121 and the buffer pad 300. In addition, in a dangerous scene such as a collision or a drop of the electronic device 1, the buffer pad 300 can buffer the external force applied to the protection board assembly 200, so as to improve the reliability of the protection board assembly 200.
The battery cell 110 may be composed of a winding core (not shown in the figure) and a protective layer (not shown in the figure) wrapped outside the winding core, where the protective layer is used for protecting the winding core and preventing a user from being injured by the winding core, and the protective layer may be an insulating layer, for example. The winding core can comprise a positive plate, a diaphragm and a negative plate which are sequentially laminated and wound, and the diaphragm is arranged between the positive plate and the negative plate to insulate and isolate the positive plate and the negative plate.
With continued reference to fig. 7, the fixing frame 120 is shown to be disposed around the battery cell 110, and at this time, the fixing frame 120 is in a frame structure, and the shape and size of the fixing frame 120 can be matched with those of the battery cell 110, so as to sleeve the fixing frame 120 on the periphery of the battery cell 110, and the fixing frame 120 and the battery cell 110 can be connected by, for example, gluing. In other examples, the fixing frame 120 may be disposed only corresponding to the electrical terminal of the electrical core 110, for example, the fixing frame 120 may include only the mounting portion 121, and the mounting portion 121 is mounted on the electrical terminal of the electrical core 110 by bonding, welding or mechanical locking; alternatively, the fixing frame 120 may cover the whole surface of the power connection end of the battery cell 110, for example, the fixing frame 120 includes a main board 30 portion and a mounting portion 121 extending out of one side of the main board 30 portion away from the end surface of the battery cell 110, at this time, the buffer pad 300 may be located between the protection board assembly 200 and the main board 30 portion of the fixing frame 120, and the fixing frame 120 and the buffer pad 300 are spaced between the protection board assembly 200 and the battery cell 110, so that heat transferred from the protection board assembly 200 to the battery cell 110 can be reduced, and the working safety of the battery cell 110 is protected.
On the basis that the heat conducting fin 400 is arranged to conduct heat of the protection plate assembly 200 to the outside directly, the buffer pad 300 arranged between the protection plate assembly 200 and the end face of the battery cell 110 is further improved, so that heat transfer between the protection plate assembly 200 and the battery cell 110 is reduced through the buffer pad 300, heat transfer efficiency between the protection plate assembly 200 and the battery cell 110 is weakened, the influence of heat of the protection plate assembly 200 on the battery cell 110 is prevented, normal working temperature of the battery cell 110 is helped to be maintained, high temperature risks are avoided for the battery cell 110, and reliability and safety of the battery cell 110 are improved.
FIG. 9 is a schematic view of the structure of the cushion of FIG. 8; FIG. 10 is a schematic cross-sectional view of the cushion of FIG. 9 at A-A. Referring to fig. 9, which illustrates the surface structure of the cushion 300 shown in fig. 8, a plurality of grooves 310 are spaced apart from at least one surface of both side surfaces in the thickness direction of the cushion 300, and the grooves 310 are recessed inward from the surface of the cushion 300. As shown in fig. 7, by providing the grooves 310, the contact area between the buffer pad 300 and the corresponding side member, in other words, the heat transfer area between the buffer pad 300 and the corresponding side member is reduced, and the heat transferred from the protection plate assembly 200 to the battery cell 110 can be reduced.
Referring to fig. 10, as an example, grooves 310 may be formed on both side surfaces of the buffer pad 300, in other words, grooves 310 are distributed on one side surface of the buffer pad 300 facing the protection plate assembly 200, so that the contact area between the protection plate assembly 200 and the buffer pad 300 is reduced, grooves 310 are also distributed on one side surface of the buffer pad 300 facing the battery cell 110, the contact area between the protection plate assembly 200 and the end surface of the battery cell 110 is reduced, and the heat transferred from the protection plate assembly 200 to the battery cell 110 can be effectively reduced. In other examples, in case that the heat conductive sheet 400 is capable of rapidly conducting most of the heat generated from the protection plate assembly 200 to the outside, less heat remains in the protection plate assembly 200, the groove 310 may be provided only at the side surface of the buffer pad 300 facing the protection plate assembly 200, or the groove 310 may be provided only at the side surface of the buffer pad 300 facing the battery cell 110.
The provision of the grooves 310 on the surface of the bumper pad 300, in addition to reducing the contact area between the bumper pad 300 and the corresponding side members, corresponds to surrounding an air gap between the grooves 310 of the bumper pad 300 and the corresponding side members after the assembly of the protection plate assembly 200, and has a low thermal conductivity of air, thereby also serving to reduce heat transfer between the protection plate assembly 200 and the battery cells 110.
In fig. 9, three rows of grooves 310 are arranged at intervals along the width direction of the cushion 300, in other examples, when the width of the cushion 300 is smaller, only two rows of grooves 310 may be arranged at intervals along the width direction of the cushion 300, and when the width of the cushion 300 is sufficient, four, five or more rows of grooves 310 may be arranged at intervals along the width direction of the cushion 300.
In addition, in the case that more than two rows of grooves 310 are arranged at intervals along the width direction of the cushion 300, the grooves 310 of adjacent rows may be arranged in a staggered manner, that is, the grooves 310 of adjacent rows are not arranged in sequence along the width direction of the cushion 300, but arranged in a staggered manner. In this manner, the arrangement density of the grooves 310 can be increased, the area occupied by the grooves 310 on the surface of the buffer pad 300 can be increased, the contact area between the buffer pad 300 and the corresponding side member can be reduced, and the heat transfer between the protection plate assembly 200 and the battery cell 110 can be reduced.
With continued reference to fig. 10, on the basis of providing the recess 310 on the surface of the cushion 300 to reduce the contact area between the cushion 300 and the corresponding side members, in some embodiments, the cushion 300 may further have a plurality of air holes 320 dispersed therein, the air holes 320 not being in communication with each other, in other words, the cushion 300 may have a loose porous structure. By forming the plurality of air holes 320 inside the cushion 300, also by virtue of the low thermal conductivity of air, the heat transfer amount of the cushion 300 itself is reduced, thereby reducing the heat transferred from the protection plate assembly 200 to the battery cell 110, protecting the battery cell 110 from the protection plate assembly 200, and reducing the risk of high temperature of the battery cell 110.
The multiple layers of air holes 320 can be distributed in the cushion 300 along the thickness direction of the cushion 300, and similar to the grooves 310 on the surface of the cushion 300, the air holes 320 between adjacent layers in the cushion 300 can be staggered, so that not only can the arrangement density of the air holes 320 in the cushion 300 be increased and the volume occupied by the air holes 320 in the cushion 300 be increased, but also the transmission path length of heat in the cushion 300 can be increased by the staggered air holes 320, the heat transfer efficiency between the protection plate assembly 200 and the battery cell 110 can be reduced, and the heat transferred from the protection plate assembly 200 to the battery cell 110 can be reduced, so that the safety and reliability of the battery cell 110 can be improved.
Fig. 11 is a rear view of another battery body of the battery module according to the embodiment of the present application; fig. 12 is a top view of the battery body of fig. 11; FIG. 13 is a schematic view of the structure of the cushion of FIG. 12; FIG. 14 is a schematic cross-sectional view of the cushion of FIG. 13 at B-B.
Referring to fig. 11 and 12, in addition to providing the grooves 310 on the surface of the cushion 300 in the thickness direction, at least one of the both side surfaces of the cushion 300 may be provided in the form of the protrusions 330, that is, the at least one side surface of the cushion 300 is spaced apart by a plurality of the protrusions 330, and the protrusions 330 may extend in the thickness direction of the cushion 300, and the cushion 300 supports the corresponding side parts by means of the protrusions 330.
Similar to providing the recess 310 on the surface of the buffer pad 300, the protrusion 330 is provided on the surface of the buffer pad 300, and the top end surface of the protrusion 330 facing away from the buffer pad 300 contacts with the corresponding side member, so that the contact area between the buffer pad 300 and the corresponding side member is reduced, and the heat transferred from the protection plate assembly 200 to the battery cell 110 can be reduced. Also, the circumferential sides of the boss 330 form an air gap between the buffer pad 300 and the corresponding side member, and the low thermal conductivity of air also plays a role in reducing the thermal conductivity between the protection plate assembly 200 and the battery cell 110.
The protrusions 330 may be disposed on both side surfaces of the buffer pad 300, or the grooves 310 may be disposed only on one side surface of the buffer pad 300 facing the protection plate assembly 200, or the grooves 310 may be disposed only on one side surface of the buffer pad 300 facing the battery cell 110. In other examples, in order to reduce the contact area between the two side surfaces of the buffer pad 300 and the protection plate assembly 200 and the battery cell 110, a groove 310 may be provided on one side surface of the buffer pad 300 and a protrusion 330 may be provided on the other side surface of the buffer pad 300, which is not particularly limited in this embodiment.
Similarly to the grooves 310 formed on the surface of the cushion 300, two or more rows of the projections 330 may be arranged at intervals in the width direction of the cushion 300, and in fig. 13, three rows of the projections 330 may be arranged at intervals in the width direction of the cushion 300, in other examples, when the width of the cushion 300 is small, only two rows of the projections 330 may be arranged at intervals in the width direction of the cushion 300, and when the width of the cushion 300 is sufficient, four, five or more rows of the projections 330 may be arranged at intervals in the width direction of the cushion 300.
In addition, in the case where more than two rows of the protrusions 330 are arranged at intervals along the width direction of the cushion 300, the protrusions 330 of adjacent rows may be arranged in a staggered manner, that is, the protrusions 330 of adjacent rows are not sequentially arranged along the width direction of the cushion 300, but are arranged in a staggered manner. In this way, the arrangement density of the convex columns 330 can be increased, the area occupied by the convex columns 330 on the surface of the cushion 300 is increased, the supporting strength of the cushion 300 to the protection plate assembly 200 is increased on the basis of reducing the contact area between the cushion 300 and the corresponding side parts, and the stability of the protection plate assembly 200 is ensured.
In addition, as shown in connection with fig. 13 and 14, for the boss 330 protruding on the surface of the cushion 300, in some embodiments, in the height direction of the boss 330, the boss 330 is connected from the bottom end of the cushion 300 to the top end of the boss 330 facing away from the cushion 300, and the cross-sectional area of the boss 330 is gradually reduced, in other words, the cross-sectional area of the boss 330 from the top end to the bottom end is gradually increased, and the longitudinal section of the boss 330 is, for example, a trapezoid structure. In this way, when the protection plate assembly 200 is assembled on the cushion pad 300, the protrusion columns 330 are compressed by a certain amount under the pressure of the protection plate assembly 200, so that the protection plate assembly 200 is more firmly fixed, and a certain gap is still maintained between the adjacent protrusion columns 330, so that the contact area between the cushion pad 300 and the corresponding side members can be reduced.
In addition, similar to the buffer pad 300 shown in fig. 10, referring to fig. 14, in the case where the convex columns 330 are provided on the surface of the buffer pad 300, the buffer pad 300 may be provided in a loose porous structure, that is, the inside of the buffer pad 300 is dispersed with a plurality of air holes 320, and the air holes 320 are not communicated with each other, so that the heat transfer amount of the buffer pad 300 itself is reduced and the heat transferred from the protection plate assembly 200 to the battery cell 110 is reduced by the characteristic of low heat conductivity of air. In addition, multiple layers of air holes 320 can be distributed in the cushion 300 along the thickness direction, and the air holes 320 between adjacent layers can be staggered, so that the distribution density of the air holes 320 in the cushion 300 is increased, the transmission path length of heat in a cushion store is increased, and the heat transfer efficiency between the protection board assembly 200 and the battery cell 110 is reduced, and the details are not repeated here.
As for the protection plate assembly 200 mounted on the power receiving end of the battery cell 110, fig. 15 is a top view of the protection plate assembly provided in the embodiment of the present application, fig. 16 is a front view of the protection plate assembly in fig. 15, fig. 17 is a rear view of the protection plate assembly in fig. 15, and referring to fig. 15 to 17, the protection plate assembly 200 may include a printed circuit board 221 and a flexible circuit board 210, and devices (not shown) integrated on the printed circuit board 221 for monitoring and controlling the state (charge and discharge state) of the battery cell 110 to prevent the aforementioned problems of overcharge, overdischarge, short circuit, etc. of the battery cell 110, the printed circuit board 221 is mounted on the flexible circuit board 210, and the flexible circuit board 210 is connected with the power receiving end of the battery cell 110 to realize the electrical connection of the protection plate assembly 200 with the battery cell 110.
In order to protect the devices on the printed circuit board 221, as shown in fig. 15, an encapsulation layer 222 is generally disposed on the printed circuit board 221, the encapsulation layer 222 covers a surface of the printed circuit board 221 on which the devices are disposed, and the encapsulation layer 222 wraps the devices so as to protect the devices, ensure that the devices can be stably mounted on the printed circuit board 221, and prevent the devices from being damaged. The present embodiment defines an overall structure of the printed circuit board 221 and the encapsulation layer 222 as an encapsulation body 220, and the encapsulation body 220 is mounted on the flexible circuit board 210 to constitute the protection board assembly 200.
When assembling the protection board assembly 200, the package 220 may be formed by covering the printed circuit board 221 with the package layer 222, and then assembling the package 220 on the flexible circuit board 210 to form the protection board assembly 200. The surface of the printed circuit board 221, on which no device is provided, faces the flexible circuit board 210 and is attached to the flexible circuit board 210, and the package 220 is located on the side of the printed circuit board 221 facing away from the flexible circuit board 210.
For example, with respect to the electronic device 1, which tends to be lighter and thinner and smaller, the volume of the battery body 100 tends to be smaller, the installation space of the power receiving end of the battery body 100 is limited, and the extension length of the printed circuit board 221 in the protection plate assembly 200 generally occupies most of the space in the width direction of the battery body 100, taking as an example the case where the protection plate assembly 200 is installed at one end of the battery body 100 in the length direction. In contrast, referring to fig. 15, in order to stably mount the package body 220 and to well achieve connection between the battery module 40 and other components (e.g., the main board 30), the flexible circuit board 210 of the protection board assembly 200 is generally long in length, the flexible circuit board 210 is generally spread over the width of the battery body 100, the package body 220 is generally mounted at a middle region in the length direction of the flexible circuit board 210, and portions of the flexible circuit board 210 protruding at both sides of the package body 220 may be reversely bent and covered at one side of the package body 220.
In this embodiment, the flexible circuit board 210 is defined to include a first section 211, a middle section 212 and a second section 213 that are sequentially disposed along a length direction of the flexible circuit board 210, where the middle section 212 of the flexible circuit board 210 is a section corresponding to the package body 220, the package body 220 is attached to the middle section 212, the first section 211 and the second section 213 of the flexible circuit board 210 are respectively located at two sides of the package body 220, and the first section 211 and the second section 213 of the flexible circuit board 210 are both bent towards a side where the package body 220 is located, and the first section 211 and the second section 213 are both bent towards a direction where a center of the package body 220 is located, so that the first section 211 and the second section 213 cover two side areas of the package layer 222 respectively, and the middle area of the package layer 222 is exposed between the first section 211 and the second section 213, so that a space occupied by the whole protective plate assembly 200 is reduced, and the protective plate assembly 200 is limited within a range where the width direction of the battery body 100 is located.
Fig. 16 shows a side surface of the protective board assembly 200 facing the first component 1a (e.g. the middle frame 21), and in the protective board assembly 200, a side surface of the flexible circuit board 210 facing away from the package body 220 faces the first component 1a, and the protective board assembly 200 may be attached to the mounting portion 121 of the fixing frame 120 by means of the side surface of the flexible circuit board 210, for example, a glue layer 500 (e.g. double-sided glue) is provided between the flexible circuit board 210 and the mounting portion 121, and the two are fixed by the glue layer 500. Fig. 17 shows a side surface of the protection board assembly 200 facing the second part 1b (e.g., the rear cover 22), and in the protection board assembly 200, the package body 220 faces the second part 1b, and the first and second sections 211 and 213 of the flexible circuit board 210 are covered on both sides of the package body 220.
It should be noted that fig. 15 to 17 illustrate an example in which the length of the flexible circuit board 210 is long, and the first section 211 and the second section 213 of the flexible circuit board 210 are bent and cover both sides of the package body 220. In other examples, in the case where the length of the flexible circuit board 210 is small, the flexible circuit board 210 may be entirely located within the width of the battery body 100 in the unfolded state or may be integrally attached to the mounting part 121 in the flattened state in the case where one side of the flexible circuit board 210 protrudes out of the battery body 100, or the flexible circuit board 210 may be a structure in which one side is bent and covers one side of the package body 220, which is not particularly limited in this embodiment. The flexible circuit board 210 includes a first section 211, an intermediate section 212, and a second section 213, which are sequentially connected, as will be described below.
Referring to fig. 16 and 17, it is further shown that the first section 211 and the second section 213 of the flexible circuit Board 210 have protruding portions 201, and as shown in fig. 4 or 5, the protruding portions 201 of the first section 211 and the second section 213 protrude from sides of the first section 211 and the second section 213, respectively, facing away from the battery cell 110, and the flexible circuit Board 210 may be electrically connected to other components (for example, the motherboard 30) through the protruding portions 201 of the first section 211 and the second section 213, for example, by providing Board-to-Board (BTB) connectors on the protruding portions 201 of the first section 211 and the second section 213, so as to connect the flexible circuit Board 210 to the motherboard 30. For example, the protruding portion 201 may be disposed at the ends of the first and second sections 211 and 213 such that the first and second sections 211 and 213 are bent to cover the front side of the package body 220, and the protruding portion 201 of the first section 211 is closest to the protruding portion 201 of the second section 213, which may reduce the space occupied by the connection structure between the flexible circuit board 210 and the main board 30.
Fig. 18 is a front view of a protective plate assembly according to an embodiment of the present application mounted to a battery body; fig. 19 is a top view of fig. 18. As shown in connection with fig. 18 and 19, the protection board assembly 200 is shown attached to a side surface of the mounting portion 121 of the fixing frame 120 facing the second part 1b through a side surface of the flexible circuit board 210 facing away from the package body 220, the package body 220 of the protection board assembly 200 faces the first part 1a, and an intermediate region of the surface of the package body 220 is exposed between the first and second sections 211 and 213 of the flexible circuit board 210.
As for the electrical connection between the protection plate assembly 200 and the battery cell 110, the battery cell 110 has a battery cell tab 111, the protection plate assembly 200 is provided with a connection tab 2121, and the battery cell tab 111 corresponds to the connection tab 2121 and is connected to each other, so as to achieve the electrical connection between the protection plate assembly 200 and the battery cell 110.
Referring to fig. 10 and 11, the battery tab 111 extends out of the electrical connection end of the battery 110, the battery tab 111 includes a positive tab 1111 and a negative tab 1112, the positive tab 1111 is connected to the positive tab in the winding core, the negative tab 1112 is connected to the negative tab in the winding core, and the positive tab 1111 (negative tab 1112) may be formed by integrally die-cutting the positive tab (negative tab), or the positive tab 1111 (negative tab 1112) may be processed separately and connected to the positive tab (negative tab) by welding, conductive adhesive bonding, or the like. Taking the battery cell tab 111 shown in the figure as an example, the battery cell tab 111 includes two positive electrode tabs 1111 and one negative electrode tab 1112, and the negative electrode tab 1112 is located between the two positive electrode tabs 1111, so that the charging current of the battery cell 110 can be increased, and rapid charging of the battery module 40 can be realized.
Referring to fig. 15 and 16, the connection tabs 2121 on the protection plate assembly 200 may be disposed on the flexible circuit board 210 corresponding to the two positive tabs 1111 and the one negative tab 1112 of the battery cell 110, and three connection tabs 2121 may be disposed on the flexible circuit board 210 of the protection plate assembly 200, and the three connection tabs 2121 are respectively connected to the two positive tabs 1111 and the one negative tab 1112 of the battery cell 110.
In order to facilitate connection between the battery cell tab 111 of the battery cell 110 and the connection tab 2121 on the flexible circuit board 210, the battery cell tab 111 may be disposed on a side where the mounting portion 121 is located, for example, the battery cell tab 111 may extend along a side surface of the mounting portion 121 facing the second component 1b in a direction away from the power receiving end of the battery cell 110, the connection tab 2121 of the protection board assembly 200 may be disposed on a side surface of the flexible circuit board 210 facing the mounting portion 121, as shown in fig. 18 and 19, the battery cell tab 111 is bent towards each other at the connection tab 2121, and the two are attached together, and the attached positions of the two may be connected together by welding to realize electrical connection between the battery cell 110 and the protection board assembly 200. In the case that the adhesive layer 500 is disposed between the mounting portion 121 and the flexible circuit board 210, the battery cell tab 111 and the connection tab 2121 are respectively located at two sides of the adhesive layer 500, and the battery cell tab 111 and the connection tab 2121 can be respectively bonded to two sides of the adhesive layer 500, so that the battery cell tab 111 and the connection tab 2121 are fixed through the adhesive layer 500.
Fig. 20 is a schematic view of a structure in which the protective plate assembly of fig. 19 is coated with an insulating film. Referring to fig. 20, in order to protect the protection plate assembly 200, in some embodiments, the exterior of the protection plate assembly 200 may be further covered with an insulation film 600, one side of the insulation film 600 is connected to a surface of the mounting part 121 facing the first member 1a, and the other side of the insulation film 600 extends toward the second surface 110b of the battery cell 110 and is connected to a top region of the second surface 110b of the battery cell 110 after bypassing the top end of the protection plate assembly 200. Accordingly, the insulating film 600 may include a portion where the package 220 of the protection board assembly 200 is located, and the first and second sections 211 and 213 of the flexible circuit board 210 protrude outside the insulating film 600 so as not to limit deformation and movement of the first and second sections 211 and 213 of the flexible circuit board 210 by the insulating film 600.
Fig. 21 is a front view of an assembled insulating film provided in an embodiment of the present application; fig. 22 is a rear view of an assembled insulating film according to an embodiment of the present application. Referring to fig. 21 and 22, when the protective plate assembly 200 is wrapped with the insulating film 600, the flexible circuit board 210 of the protective plate assembly 200 may be first put in a flattened state, one side of the insulating film 600 may be attached to a surface of the mounting portion 121 facing the first component 1a, the insulating film 600 may be wound around the package 220 of the protective plate assembly 200, and finally, the other side of the insulating film 600 may be fixedly connected to the surface of the battery cell 110 to wrap the insulating film 600 around the protective plate assembly 200. After the insulating film 600 is mounted, the first and second sections 211 and 213 of the flexible circuit board 210 are bent to cover both sides of the package 220.
Illustratively, the insulating film 600 may be a Mylar (Mylar) film having good surface flatness, transparency, and mechanical flexibility, which may protect the shield assembly 200 by wrapping it around the portion of the shield assembly 200 where the package 220 is located, making the shield assembly more stable to install. The insulating film 600 wraps the connected battery tab 111 and the connected tab 2121 inside, and forms insulating isolation protection between the connected tab and the first component 1a (e.g., the middle frame 21) so as to reduce the risk of short-circuiting of the connected tab.
Of course, the strength of the connected battery tab 111 and the connected tab 2121 is high, and the two tabs can be completely fixed by the adhesive layer 500, so that it is ensured that the connected tab will not contact the first component 1a even in a dangerous situation such as a collision or a drop, and the insulating film 600 may not be wrapped around the protection plate assembly 200 corresponding to the position of the package 220.
As for the arrangement of the heat conductive sheet 400 corresponding to the protection plate assembly 200, since the portion of the mounting board assembly corresponding to the package 220 is wrapped with the insulating film 600 and the insulating film 600 covers the side surface of the mounting portion 121 facing the first member 1a, the heat conductive sheet 400 may be attached to the outer surface of the insulating film 600.
For the arrangement of the heat conductive sheet 400 between the protection plate assembly 200 and the first component 1a (for example, the middle frame 21), as described above, the heat conductive sheet 400 may be arranged between the mounting portion 121 and the first component 1a, as shown in fig. 4 and 21, the heat conductive sheet 400 may be attached to the insulating film 600 covered on the outer surface of the side of the mounting portion 121 facing the first component 1a, as shown in fig. 6, the mounting portion 121 of the fixing frame 120 is spaced from the first surface 110a of the battery cell 110 to reserve a mounting space for the heat conductive sheet 400, one side surface of the heat conductive sheet 400 is attached to the insulating film 600, and the other side surface of the heat conductive sheet 400 is attached to the first component 1a to transfer heat of the protection plate assembly 200 to the first component 1a. Of course, in the case where the insulating film 600 is not wrapped outside the protection plate assembly 200, the heat conductive sheet 400 may be directly attached to the mounting portion 121.
In addition, as described above, in the actual application, there may be a case where the main board 30 and the sub-board are respectively located at both sides of the battery module 40, and the main board 30 and the sub-board are connected by the FPC crossing the battery module 40, and in this regard, as shown in fig. 4 and 6, in order to save space, the heat conductive sheet 400 located between the mounting part 121 and the first member 1a may be provided in the form of including the first heat conductive sheet 410 and the second heat conductive sheet 420, the first heat conductive sheet 410 and the second heat conductive sheet 420 are respectively attached to both sides of the insulating film 600 in the length direction, and an escape space is provided between the first heat conductive sheet 410 and the second heat conductive sheet 420, the escape space corresponding to the FPC crossing the battery module 40, and the FPC is penetrated out of the escape space.
And, on the basis of providing an avoidance space for the FPC crossing the battery module 40, by providing the first and second heat conductive sheets 410 and 420 to occupy other regions of the insulating film 600, the area covered by the first and second heat conductive sheets 410 and 420 as a whole is larger, and the heat conductive sheets 400 having a sufficient area between the protection plate assembly 200 and the first member 1a can be ensured, so that the heat transfer efficiency of the protection plate assembly 200 to the first member 1a is improved, and the heat dissipation performance of the protection plate assembly 200 is improved.
For the arrangement of the heat conductive sheet 400 between the protection plate assembly 200 and the second member 1b (e.g., the rear cover 22), the heat conductive sheet 400 may be disposed between the second member 1b and a side surface of the package 220 facing away from the flexible circuit board 210, and for convenience of description, the present embodiment defines a side surface of the package 220 facing away from the flexible circuit board 210 as a heat transfer surface thereof, that is, the heat conductive sheet 400 may be disposed between the heat transfer surface of the protection plate assembly 200 and the second member 1b. As shown in conjunction with fig. 5 and 22, the heat conductive sheet 400 may be attached to the insulating film 600 covering the outside of the heat transfer surface of the protection plate assembly 200, and heat of the protection plate assembly 200 is transferred to the second member 1b through the heat conductive sheet 400. Of course, in the case where the insulating film 600 is not wrapped outside the protection plate assembly 200, the heat conductive sheet 400 may be directly attached to the heat transfer surface of the protection plate assembly 200.
As shown in fig. 5 and 19, in the case where the first section 211 and the second section 213 of the flexible circuit board 210 are bent to cover both sides of the package body 220, in other words, the first section 211 and the second section 213 of the flexible circuit board 210 cover both side regions of the heat transfer surface of the package body 220, in order not to limit the movement of the first section 211 and the second section 213 of the flexible circuit board 210, in this embodiment, the heat conductive sheet 400 may be disposed corresponding to the middle region of the heat transfer surface of the package body 220, that is, the heat conductive sheet 400 is attached to the middle region of the insulating film 600 wrapped outside the package body 220, and the heat conductive sheet 400 is located on the insulating film 600 in the region exposed between the first section 211 and the second section 213 of the flexible circuit board 210.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
The terms first, second, third, fourth and the like in the description and in the claims of embodiments of the application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Claims (22)

1. A battery module mounted between a first member and a second member of an electronic device, the battery module comprising: the battery cell, the fixing frame, the protection board component and the heat dissipation component;
the two side surfaces of the battery cell in the thickness direction are a first surface and a second surface respectively, wherein the first surface faces the first component, and the second surface faces the second component; the fixing frame is connected to the periphery of the battery cell, the fixing frame comprises a mounting part, the mounting part is located at the power-on end of the battery cell, the mounting part is close to one side where the first surface is located, the protection board assembly is arranged at the power-on end and attached to the mounting part, and the protection board assembly is electrically connected with the battery cell;
the heat dissipation assembly includes a heat conductive sheet disposed between the mounting portion and the first member, and/or the heat conductive sheet is disposed between the protection plate assembly and the second member.
2. The battery module according to claim 1, wherein the protection plate assembly includes a flexible circuit board and a package body, a side surface of the flexible circuit board is attached to the mounting portion, the package body is connected to a side surface of the flexible circuit board facing away from the mounting portion, a side surface of the package body facing away from the flexible circuit board is a heat transfer surface, and the heat conductive sheet is located between the heat transfer surface and the second member;
the packaging body comprises a printed circuit board and a packaging layer, wherein one side surface of the printed circuit board is attached to the flexible circuit board, a device is arranged on one side surface of the printed circuit board, which is away from the flexible circuit board, and the packaging layer is arranged on one side of the printed circuit board, which is away from the flexible circuit board, and covers the device.
3. The battery module according to claim 2, wherein the flexible circuit board comprises a first section, a middle section and a second section in sequence along a length direction, the package body is connected to the middle section, the first section and the second section are bent toward a side of a heat transfer surface of the package body and cover both side areas of the heat transfer surface, the middle area of the heat transfer surface is exposed between the first section and the second section, and the heat conductive sheet is disposed corresponding to the middle area of the heat transfer surface.
4. The battery module according to claim 3, further comprising an insulating film having one side connected to a surface of the mounting portion facing the first member, the other side of the insulating film bypassing the top end of the protective plate assembly and extending to cover the heat transfer surface of the package body, the first and second segments being located outside the insulating film;
wherein, the heat conduction sheet is attached to the outer surface of the insulating film.
5. The battery module according to claim 4, wherein the heat conductive sheet provided between the mounting portion and the first member includes a first heat conductive sheet and a second heat conductive sheet, the first heat conductive sheet and the second heat conductive sheet being respectively attached to both sides of the insulating film in a length direction, the first heat conductive sheet and the second heat conductive sheet being provided therebetween with an escape space.
6. The battery module according to any one of claims 1 to 5, wherein the heat conductive sheet is a graphite sheet.
7. The battery module of any one of claims 1-5, further comprising a cushion pad sandwiched between the protective plate assembly and an end face of the cell.
8. The battery module of claim 7, wherein the cushion has a plurality of non-communicating air holes distributed therein.
9. The battery module of claim 8, wherein the air holes of adjacent layers are arranged in a staggered manner along the thickness direction of the cushion pad.
10. The battery module according to claim 7, wherein a plurality of grooves are spaced apart from at least one side surface of the cushion pad in a thickness direction, the grooves being recessed inward from the surface of the cushion pad.
11. The battery module of claim 10, wherein more than two rows of the grooves are arranged at intervals in the width direction of the cushion pad, and the grooves of adjacent rows are arranged in a staggered manner.
12. The battery module according to claim 7, wherein a plurality of protrusions are spaced apart from at least one side surface of the cushion pad in a thickness direction thereof, the protrusions extending in the thickness direction of the cushion pad.
13. The battery module of claim 12, wherein more than two rows of the posts are arranged at intervals along the width direction of the cushion pad, and the posts of adjacent rows are arranged in a staggered manner.
14. The battery module of claim 12, wherein the cross-sectional area of the boss increases gradually from one end of the boss facing away from the cushion pad to the other end of the boss.
15. The battery module of claim 7, wherein the cushion pad is a silicone pad or a rubber pad.
16. The battery module according to any one of claims 1-5, wherein the power receiving end of the battery cell is provided with a battery cell tab, the protection plate assembly is provided with a connection tab, and the connection tab is correspondingly connected with the battery cell tab.
17. The battery module according to claim 16, wherein the battery cell tab is located at a side where the mounting portion is located and protrudes in a direction away from the power receiving end of the battery cell; the connecting lugs are arranged on the surface of one side of the protective plate assembly, which faces the mounting part, and extend out in a direction away from the power receiving end of the battery cell; the battery cell tab and the connecting tab are bent towards each other and are connected in a fitting mode.
18. The battery module of claim 17, wherein an adhesive layer is disposed between the protective plate assembly and the mounting portion, and the battery cell tab and the connection tab are adhered to two side surfaces of the adhesive layer, respectively.
19. An electronic device comprising a first member, a second member, and the battery module of any one of claims 1-18, the battery module being mounted between the first member and the second member.
20. The electronic device of claim 19, further comprising a heat sink attached between the battery module and the second component, the heat sink extending from one end of the protective plate assembly of the battery module to the other end to cover at least a portion of the second surface of the battery cell;
wherein, set up the protection shield subassembly towards the heat conducting strip of the side of second part with the fin laminating.
21. The electronic device of claim 20, wherein the heat sink comprises a first protective layer, a thermally conductive layer, and a second protective layer stacked in sequence, the first protective layer facing the protective plate assembly, the second protective layer facing the second component.
22. The electronic device of claim 21, wherein the first protective layer is provided with an avoidance opening, the avoidance opening exposes the heat conducting layer, the avoidance opening corresponds to the heat conducting strip, and the heat conducting strip extends into the avoidance opening to be attached to the heat conducting layer.
CN202222749240.4U 2022-10-19 2022-10-19 Battery module and electronic equipment Active CN219106272U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222749240.4U CN219106272U (en) 2022-10-19 2022-10-19 Battery module and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222749240.4U CN219106272U (en) 2022-10-19 2022-10-19 Battery module and electronic equipment

Publications (1)

Publication Number Publication Date
CN219106272U true CN219106272U (en) 2023-05-30

Family

ID=86427680

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222749240.4U Active CN219106272U (en) 2022-10-19 2022-10-19 Battery module and electronic equipment

Country Status (1)

Country Link
CN (1) CN219106272U (en)

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