Battery and electronic device

Abstract

The utility model discloses a battery and electronic equipment, and belongs to the field of electronic equipment. The battery comprises a first circuit board and at least two battery cells, each battery cell is provided with a short side wall extending in the first direction and a long side wall extending in the second direction, and the long side walls of the at least two battery cells are oppositely arranged at intervals in the first direction; the first circuit board is arranged between the long side walls arranged at intervals in the first direction, the first circuit board is electrically connected with the battery cells, and the first direction intersects with the second direction.

Description

Technical Field

[0001] This application belongs to the field of electronic devices, and particularly relates to a battery and an electronic device. Background Art

[0002] An electronic device is provided with a battery to supply power for the operation of the electronic device. In order to increase the standby time of the electronic device, multiple battery cells are arranged in the battery to increase the capacity of a single battery. When the housing of a battery cell is charged, contact between adjacent battery cells will cause a short circuit, affecting the service life of the battery. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide an electronic device, which can solve the technical problem that the short circuit caused by the contact of charged battery cells in the related art affects the service life of the battery.

[0004] To solve the above technical problem, this application is implemented as follows:

[0005] In a first aspect, the embodiments of this application provide a battery, including:

[0006] At least two battery cells, each battery cell having a short side wall extending in a first direction and a long side wall extending in a second direction, and the long side walls of at least two battery cells are arranged at intervals relative to each other in the first direction;

[0007] A first circuit board, which is arranged between the long side walls arranged at intervals in the first direction, and the first circuit board is electrically connected to the battery cells respectively, and the first direction intersects with the second direction.

[0008] In a second aspect, the embodiments of this application provide an electronic device, including:

[0009] The battery provided in the first aspect;

[0010] A second circuit board and a third circuit board, which are respectively arranged on opposite sides of the battery in the second direction, and opposite ends of the first circuit board in the second direction are electrically connected to the second circuit board and the third circuit board respectively;

[0011] A third flexible circuit board, which electrically connects the second circuit board and the third circuit board;

[0012] A charging interface, which is arranged on the third circuit board, and the charging interface is electrically connected to the first circuit board and the third flexible circuit board through the third circuit board.

[0013] In the embodiments provided in the present application, compared with placing the first circuit board on one side of the short side wall of the battery cell in the second direction, the first circuit board is disposed between the battery cells spaced apart in the first direction in the present application, which improves the compactness of the first circuit board and the battery cells and is beneficial to reducing the occupied space of the battery. By disposing the first circuit board between the battery cells spaced apart in the first direction, direct contact between the battery cells is avoided or reduced, short circuit between the battery cells is avoided or reduced, and the service life of the battery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic plan view of a battery provided by an embodiment of the present application;

[0015] Figure 2 is one of the schematic cross-sectional views of a battery provided by an embodiment of the present application;

[0016] Figure 3 is another schematic cross-sectional view of a battery provided by an embodiment of the present application;

[0017] Figure 4 is still another schematic cross-sectional view of a battery provided by an embodiment of the present application;

[0018] Figure 5 is a schematic plan view of an electronic device provided by an embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS:

[0020] 10. Battery; 20. Second circuit board; 30. Third circuit board; 40. First charging management module; 50. Second charging management module; 60. Third flexible circuit board; 1. Housing; 11. Support wall; 12. Side wall; 13. Receiving groove; 14. First side; 15. Second side;

[0021] 2. Battery cell; 21. Battery cell main body; 22. Electrode terminal; 23. Sealing edge portion; 3. First circuit board; 31. First flexible circuit board; 32. First board body; 33. Second flexible circuit board; 4. Insulating member; 5. Limiting seat; 6. First electrical connector; 7. Second electrical connector;

[0022] X. First direction; Y. Second direction; Z. Third direction. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0024] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0025] The electronic device provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and their application scenarios.

[0026] As Figure 1 and Figure 2 As shown, the embodiments of this application provide a battery 10, which includes a first circuit board 3 and at least two battery cells 2. The battery cells 2 have short side walls L1 extending in the first direction X and long side walls L2 extending in the second direction Y. The long side walls L2 of at least two battery cells are arranged at intervals relative to each other in the first direction X; the first circuit board 3 is arranged between the battery cells 2 arranged at intervals in the first direction X, and the first circuit board 3 is electrically connected to the battery cells 2 respectively.

[0027] One or more patterned conductive layers can be provided on the first circuit board 3, a dielectric layer is provided between adjacent conductive layers, and different conductive layers can be connected through vias penetrating the dielectric layer. A power protection circuit can be provided on the first circuit board 3, and the power protection circuit is used to protect the battery cells 2 from over-discharging, over-charging, over-current, etc. By controlling the multiple battery cells 2 connected to the first circuit board 3 through the first circuit board 3, over-charging and over-discharging of the battery cells 2 can be avoided or reduced, and the performance, life and safety of the battery cells 2 can be improved. Optionally, the first direction X is the thickness direction of the first circuit board 3.

[0028] The battery cell 2 can store and supply electrical energy. The length of the short side wall L1 of the battery cell 2 is less than the length of the long side wall L2 of the battery cell 2. A plurality of battery cells 2 can be arranged side by side in pairs along the first direction X. The first circuit board 3 is arranged between the battery cells 2 arranged side by side in pairs, so as to space the battery cells 2 arranged opposite to each other along the first direction X through the first circuit board 3, avoid or reduce their direct contact, and reduce the short-circuit phenomenon caused by their contact. The first circuit board 3 can include a first surface and a second surface arranged opposite to each other along the first direction X, at least one first conductive terminal arranged on the first surface, and at least one second conductive terminal arranged on the second surface. The first conductive terminal can be electrically connected to one or more battery cells 2 located on one side of the first circuit board 3, and the second conductive terminal can be electrically connected to one or more battery cells 2 located on the other side of the first circuit board 3. The plurality of battery cells 2 connected to the first circuit board 3 can be connected in series, parallel or in a mixed connection to form an integral body, and charge and discharge outward through this integral body, where the mixed connection means that there are both series and parallel connections among the plurality of battery cells 2. Optionally, two battery cells 2 are arranged opposite to each other along the first direction X, the first circuit board 3 is arranged between the two battery cells 2, and the two battery cells 2 are connected in series through the first circuit board 3.

[0029] In the embodiment provided in the present application, compared with placing the first circuit board 3 on one side of the short side wall L1 of the battery cell 2 along the second direction Y, the present application arranges the first circuit board 3 between the battery cells 2 spaced apart along the first direction X, improving the compactness of the first circuit board 3 and the battery cells 2, which is beneficial to reducing the occupied space of the battery 10; by arranging the first circuit board 3 between the battery cells 2 spaced apart along the first direction X, the direct contact between the battery cells 2 is avoided or reduced, and the short circuit between the battery cells 2 is avoided or reduced, improving the service life of the battery 10.

[0030] In some embodiments, the battery cell 2 includes a battery cell body 21 and an electrode terminal 22. The battery cell body 21 includes a conductive shell and an electrode assembly accommodated in the conductive shell. The electrode terminal 22 is connected to the electrode assembly. Among the conductive shell and the electrode terminal 22, one is used as the negative electrode and is electrically connected to the first circuit board 3, and the other is used as the positive electrode and is electrically connected to the first circuit board 3.

[0031] The conductive shell is coated on the outside of the electrode assembly. The conductive shell can be a shell made of conductive materials such as aluminum-plastic film and steel shell, so that the conductive shell can be directly used as the pole column of the battery cell 2 and be electrically connected to the first circuit board 3. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The positive electrode sheet, the negative electrode sheet and the separator are wound to form a wound structure or a stacked structure. The electrode terminal 22 is connected to the electrode assembly and is led out from the conductive shell to be connected to the first circuit board 3.

[0032] Optionally, the battery cell 2 is a steel shell battery cell 2. Compared with lithium cobalt oxide batteries and graphite batteries, the steel shell battery cell 2 has a higher energy density. The conductive housing is electrically connected to the first circuit board 3 as the negative electrode of the battery cell 2, and the electrode terminal 22 is electrically connected to the first circuit board 3 as the positive electrode of the battery cell 2.

[0033] In some embodiments, the battery cell 2 includes a battery cell body 21 and a sealing edge portion 23. The sealing edge portion 23 is disposed around at least a part of the battery cell body 21; the first circuit board 3 is disposed between the battery cell bodies 21 of adjacent battery cells 2, and the sealing edge portions 23 of adjacent battery cells 2 are spaced apart and support the first circuit board 3.

[0034] The conductive housing may include a first housing and a second housing, and the first housing may be connected to the second housing. The first housing and the second housing may be folded along the connection position so that the first housing and the second housing enclose a space for accommodating the positive electrode sheet, the negative electrode sheet, and the separator. A plurality of first extension portions extend outward from the peripheral side of the first housing, and a plurality of second extension portions extend outward from the peripheral side of the second housing. The first extension portions and the second extension portions overlap and are hermetically connected to form the sealing edge portion 23.

[0035] Providing the sealing edge portion 23 is beneficial to improving the sealing performance of the battery cell body 21. The sealing edge portions 23 of adjacent battery cells 2 are spaced apart, and the first circuit board 3 is disposed between the battery cell bodies 21 of adjacent battery cells 2 to avoid or reduce direct contact between adjacent battery cells 2. The sealing edge portions 23 of adjacent battery cells 2 together support the first circuit board 3, thereby reducing the length of the battery cell 2 and the first circuit board 3 as a whole in the first direction X, which is beneficial to reducing the volume of the battery 10. Compared with placing the first circuit board 3 on one side of a plurality of battery cells 2 in the second direction Y, placing the first circuit board 3 between adjacent battery cells 2 can reduce the length of the battery 10 in the second direction Y by 4 mm to 5 mm and improve the battery capacity of the battery 10.

[0036] Optionally, the sealing edge portion 23 supports the first circuit board 3 in the third direction Z, and the third direction Z is the thickness direction of the battery cell 2.

[0037] In some embodiments, the battery 10 further includes an insulating member 4, and the insulating member 4 is disposed between the first circuit board 3 and the battery cell 2.

[0038] The insulating member 4 is disposed between the first circuit board 3 and the battery cell 2, thereby spacing the first circuit board 3 and the battery cell 2 apart, which is beneficial to avoiding unwanted conduction between adjacent battery cells 2 and between the battery cell 2 and the first circuit board 3.

[0039] The insulating member 4 may be an insulating adhesive filled between the first circuit board 3 and the battery cell 2. The insulating adhesive may be a thermoplastic, and the thermoplastic is injection molded between the first circuit board 3 and the battery cell 2, and the thermoplastic is cured to fix the first circuit board 3 and the battery cell 2.

[0040] Please refer toFigure 3 , in some embodiments, the battery 10 includes a limiting seat 5, and the limiting seat 5 is spaced between adjacent battery cells 2.

[0041] The battery cell 2 and the first circuit board 3 can be placed in the housing 1 together to form an integral whole through the housing 1. The housing 1 includes a supporting wall 11 for supporting the battery cell 2, and the limiting seat 5 is arranged on the supporting wall 11. The supporting wall 11 and the limiting seat 5 can be separately prepared and then assembled into an integral whole, or can be an integrally formed part. The limiting seat 5 can protrude from the supporting wall 11 along the third direction Z. Spacing the limiting seat 5 between adjacent battery cells 2 further avoids or reduces direct contact between adjacent battery cells 2.

[0042] In some embodiments, the first circuit board 3 includes a first flexible circuit board 31, a first board body 32, and a second flexible circuit board 33 that are sequentially connected along the second direction Y, and the limiting seat 5 is arranged on at least one side of the first board body 32 along the second direction Y.

[0043] The battery 10 may further include a first electrical connector 6 connected to the first flexible circuit board 31 and a second electrical connector 7 connected to the second flexible circuit board 33. An external circuit can be electrically connected to the first flexible circuit board 31 through the first electrical connector 6, and the external circuit can also be electrically connected to the second flexible circuit board 33 through the second electrical connector 7. Optionally, the first direction X and the second direction Y are perpendicular. Optionally, the second direction Y is the length direction of the first circuit board 3.

[0044] Through the first flexible circuit board 31, the first board body 32, and the second flexible circuit board 33 that are sequentially connected along the second direction Y, the external circuit can be connected to the battery cell 2 from the first flexible circuit board 31 and the second flexible circuit board 33 respectively, facilitating the access of the external circuit.

[0045] The battery 10 includes a first side 14 and a second side 15 that are oppositely arranged along the second direction Y. The limiting seat 5 is arranged on at least one side of the first board body 32 along the second direction Y, that is, the limiting seat 5 is arranged at one end of the first board body 32 close to the first side 14 to limit the movement of the first board body 32 in the direction close to the first side 14 through the limiting seat 5; the limiting seat 5 can also be arranged at one end of the first board body 32 close to the second side 15 to limit the movement of the first board body 32 in the direction close to the second side 15 through the limiting seat 5; the limiting seat 5 can also be arranged at opposite ends of the first board body 32 along the second direction Y to limit the movement of the first board body 32 along the second direction Y through the limiting seat 5. Thereby improving the stability of the first circuit board 3 in the housing 1.

[0046] Optionally, the limit seat 5 is arranged at one end of the first plate body 32 close to the first side 14. When assembling the battery 10, the adjacent battery cells 2 and the first circuit board 3 can be pre-connected, and then the adjacent battery cells 2 and the first circuit board 3 are put into the housing 1 together from the second side 15. When the first plate body 32 contacts the limit seat 5, it means that the battery cells 2 and the first circuit board 3 are assembled in place.

[0047] In some embodiments, the length of the first circuit board 3 along the second direction Y is greater than the length of the battery cell 2 along the second direction Y, so that the first circuit board 3 can protrude relative to the battery cell 2 along the second direction Y, which is beneficial to the connection between the external circuit and both ends of the first circuit board 3 along the second direction Y.

[0048] Please refer to Figure 4 , in some embodiments, at least two battery cells 2 are stacked along the third direction Z to form a battery pack, and the battery pack is arranged on opposite sides of the first circuit board 3 along the first direction X.

[0049] The battery 10 may include more than 4 battery cells 2. The multiple battery cells 2 can be stacked along the third direction Z to form a battery pack. At least two battery packs are arranged on opposite sides of the first circuit board 3 along the first direction X, so as to increase the capacity of the battery 10. Each battery pack can be charged and discharged together through the first circuit board 3. Optionally, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs.

[0050] In a second aspect, an electronic device is provided. Please refer to Figure 3 and Figure 5 , the electronic device includes the battery 10 provided in the first aspect, as well as a second circuit board 20, a third circuit board 30, a third flexible circuit board 60, and a charging interface 80. The second circuit board 20 and the third circuit board 30 are respectively arranged on opposite sides of the battery 10 along the second direction Y. The opposite ends of the first circuit board 3 along the second direction Y are respectively electrically connected to the second circuit board 20 and the third circuit board 30. The third flexible circuit board 60 electrically connects the second circuit board 20 and the third circuit board 30. The charging interface 80 is arranged on the third circuit board 30, and the charging interface 80 is electrically connected to the first circuit board 3 and the third flexible circuit board 60 through the third circuit board 30.

[0051] The electronic device can be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a vehicle-mounted device, a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It can also be a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiments of the present application do not make specific limitations. Hereinafter, the electronic device being a mobile phone will be taken as an example for illustration.

[0052] The second circuit board 20 can be the main control circuit in the electronic device, and is used to control the working states of the main functional modules of the electronic device. The circuit in the second circuit board 20 can refer to the equivalent circuit design of the control main board in the related art. The third circuit board 30 can be the secondary control circuit in the electronic device, and the circuit in the third circuit board 30 can refer to the equivalent circuit design of the control secondary board in the related art. Compared with arranging the first circuit board on one side of multiple battery cells, in the present application, the first circuit board 3 is arranged between adjacent battery cells 2, and the two opposite ends of the first circuit board 3 along the second direction Y are electrically connected to the second circuit board 20 and the third circuit board 30 respectively, thereby reducing the circuit length of the second circuit board 20 and the third circuit board 30 connected to the first circuit board 3 and reducing the circuit impedance.

[0053] Exemplarily, the battery cell 2 is a square battery cell 2 and is cuboid-shaped. The width direction of the battery cell 2 is the first direction X, the length direction of the battery cell 2 is the second direction Y, and the thickness direction of the battery cell 2 is the third direction Z. The second circuit board 20 and the third circuit board 30 are respectively arranged on opposite sides of the battery 10 along the second direction Y, the first circuit board 3 extends along the second direction Y, and the two ends of the first circuit board 3 are respectively connected to the second circuit board 20 and the third circuit board 30 through electrical connectors. The electrical connector can be a Board-to-Board (BTB) connector.

[0054] The third flexible circuit board 60 can extend along the second direction Y, and the third flexible circuit board 60 can also be arranged on one side of the battery 10 along the third direction Z. The electrical signals between the second circuit board 20 and the third circuit board 30 can be shunted through the first circuit board 3 and the third flexible circuit board 60, thereby reducing the width and thickness of the first circuit board 3 and the third flexible circuit board 60 and reducing the routing impedance of the first circuit board 3 and the third flexible circuit board 60.

[0055] Optionally, a charging interface 80, an over-voltage protection MOS transistor 70 (Over-Voltage Protection Metal Oxide Semiconductor, OVP MOS), etc. are also provided on the third circuit board 30. The charging interface 80 can be a Type-C interface, a Lightning interface, etc. The charging current can charge the battery cell 2 through the charging interface 80, the third circuit board 30, the third flexible circuit board 60, the second circuit board 20, and the first circuit board 3, or can also charge the battery cell 2 through the charging interface 80, the third circuit board 30, and the first circuit board 3, thereby realizing the shunting of the charging current, which is beneficial to heat dissipation, improves the charging efficiency, and increases the large-current charging duration.

[0056] In some embodiments, the electronic device further includes a first charging management module 40 and a second charging management module 50. The first charging management module 40 is disposed on the second circuit board 20, and the first charging management module 40 is electrically connected to the battery cell 2 through the first circuit board 3; the second charging management module 50 is disposed on the third circuit board 30, and the second charging management module 50 is electrically connected to the battery cell 2 through the first circuit board 3.

[0057] Both the first charging management module 40 and the second charging management module 50 are used for charge and discharge management of the battery cell 2. When charging the circuit, the first charging management module 40 manages the current that sequentially charges the battery cell 2 through the third circuit board 30, the third flexible circuit board 60, the second circuit board 20, and the first circuit board 3, and the second charging management module 50 manages the current that sequentially charges the battery cell 2 through the third circuit board 30 and the first circuit board 3. By shunting and managing the charging circuit through the first charging management module 40 on the second circuit board 20 and the second charging management module 50 on the third circuit board 30, it is beneficial to heat dissipation, improves the charging efficiency, and increases the large-current charging duration.

[0058] In some embodiments, the electronic device further includes a housing 1. The housing 1 has a battery compartment for accommodating the battery 10, so that the first circuit board 3 and the battery cell 2 can be fixed within the housing 1. The housing 1 protects the first circuit board 3 and the battery cell 2, and enables the first circuit board 3 and the battery cell 2 to be loaded within the housing 1 for storage, transportation, and installation as a whole. Optionally, the housing 1 is the frame of the electronic device, and the frame is recessed or hollowed to form the battery compartment.

[0059] The housing 1 includes a supporting wall 11 and a side wall 12 that are connected. The battery cell 2 is disposed on the supporting wall 11, and the side wall 12 surrounds the battery cell 2. The side wall 12 has a receiving groove 13, and a part of the sealing edge portion 23 is engaged within the receiving groove 13.

[0060] Part of the edge sealing portion 23 is engaged in the receiving groove 13, thereby improving the stability of the battery cell 2 in the housing 1. Optionally, the edge sealing portion 23 on the side of the battery cell body 21 away from the first circuit board 3 is engaged in the receiving groove 13, and the edge sealing portion 23 on the side of the battery cell body 21 close to the first circuit board 3 supports the first circuit board 3.

[0061] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A battery, characterized in that, Comprising: At least two battery cells, each of the battery cells having a short side wall extending in a first direction and a long side wall extending in a second direction, the long side walls of at least two of the battery cells being spaced apart from each other along the first direction; A first circuit board disposed between the long side walls spaced apart along the first direction, the first circuit board being electrically connected to the battery cells respectively, the first circuit board including a first surface and a second surface oppositely disposed along the first direction, and at least one first conductive terminal disposed on the first surface and at least one second conductive terminal disposed on the second surface, the first conductive terminal being electrically connected to one or more of the battery cells located on one side of the first circuit board, the second conductive terminal being electrically connected to one or more of the battery cells located on the other side of the first circuit board, the first direction and the second direction intersecting; Wherein, the battery cell includes a battery cell body and an electrode terminal, the battery cell body includes a conductive housing and an electrode assembly received in the conductive housing, and the electrode terminal is connected to the electrode assembly; Among the conductive housing and the electrode terminal, one serves as the negative electrode and is electrically connected to the first circuit board, and the other serves as the positive electrode and is electrically connected to the first circuit board.

2. The battery according to claim 1, wherein The battery cell includes a battery cell body and a sealing edge portion, the sealing edge portion being disposed around at least a part of the battery cell body; the first circuit board is disposed between adjacent battery cell bodies, and the sealing edge portions of adjacent battery cells are spaced apart and support the first circuit board.

3. The battery according to claim 1, characterized in that, The battery further includes an insulating member disposed between the first circuit board and the battery cell.

4. The battery according to claim 1, characterized in that, The battery includes a limiting seat spaced between adjacent battery cells.

5. The battery according to claim 4, characterized in that, The first circuit board includes a first flexible circuit board, a first board body, and a second flexible circuit board sequentially connected along the second direction, and the limiting seat is disposed on at least one side of the first board body along the second direction.

6. The battery according to claim 4, characterized in that, The length of the first circuit board along the second direction is greater than the length of the battery cell along the second direction.

7. The battery according to claim 1, wherein At least two of the battery cells are stacked along a third direction to form a battery pack, the battery pack being disposed on opposite sides of the first circuit board along the first direction, and the first direction, the second direction, and the third direction intersect pairwise.

8. An electronic device, characterized in that, Comprising: The battery according to any one of claims 1 to 7; A second circuit board and a third circuit board, respectively disposed on opposite sides of the battery along the second direction, opposite ends of the first circuit board along the second direction being electrically connected to the second circuit board and the third circuit board respectively; A third flexible circuit board electrically connecting the second circuit board and the third circuit board; A charging interface disposed on the third circuit board, the charging interface being electrically connected to the first circuit board and the third flexible circuit board through the third circuit board.

9. The electronic device according to claim 8, wherein The electronic device further includes: A first charging management module disposed on the second circuit board, the first charging management module being electrically connected to the battery cells through the first circuit board; The second charging management module is disposed on the third circuit board. The second charging management module is electrically connected to the battery cell through the first circuit board, and the charging interface is electrically connected to the second charging management module.

10. The electronic device according to claim 8, wherein The electronic device further includes: A housing, including a connected support wall and a side wall. The battery cell is disposed on the support wall. The side wall surrounds the battery. The side wall has a receiving groove, and the edge sealing portion of part of the battery cell is engaged in the receiving groove.

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