Battery assembly and electronic equipment with same

Abstract

The utility model provides a battery assembly and an electronic device with the same, the battery assembly comprises a battery cell, the head of the battery cell is provided with a top sealing part, the top sealing part divides the head of the battery cell into a front accommodating gap and a rear accommodating gap, and a tab of the battery cell penetrates out of the upper end of the top sealing part; the protection plate comprises a protection main plate, a protection auxiliary plate and a connection bridge plate, the protection main plate is located in the front containing notch, the protection auxiliary plate is located in the rear containing notch, the first end of the connection bridge plate is connected with the protection main plate, and the second end of the connection bridge plate is connected with the protection auxiliary plate; and the tab extends into the rear accommodating gap and is connected with the protection auxiliary plate. According to the technical scheme provided by the invention, the connection structure of the tab and the protection board can be prevented from occupying the space of the front accommodating notch, so that the heat dissipation space of the front accommodating notch is increased, and the heat dissipation space and the heat dissipation effect of the protection mainboard in the front accommodating notch are increased; the problem that the heat dissipation performance of the protection plate is limited in the related technology is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packaging, and more specifically, to a battery assembly and an electronic device having the same. Background Art

[0002] In the development process of today's electronic devices such as mobile phones, the demand for fast charging technology is increasing. And with the continuous improvement of lithium battery technology, the space of lithium batteries is getting smaller and smaller, and the utilization rate of the internal space of electronic devices is also continuously improved.

[0003] In the related art, a battery includes a battery cell and a protection board disposed at the head of the battery cell. The protection board is used to protect the battery cell from overcharging, over-discharging, over-current, short circuit, and over-temperature charging and discharging.

[0004] However, since a top sealing portion is provided at the head of the battery cell in the related art, the top sealing portion and the protection board jointly occupy the head space of the battery cell, resulting in limited heat dissipation space at the head of the battery cell and affecting the heat dissipation performance of the protection board. Summary of the Utility Model

[0005] The utility model provides a battery assembly and an electronic device having the same to solve the problem of limited heat dissipation performance of the protection board in the related art.

[0006] According to one aspect of the utility model, a battery assembly is provided. The battery assembly includes: a battery cell, the head of the battery cell having a top sealing portion, the top sealing portion dividing the head of the battery cell into a front accommodation notch and a rear accommodation notch, and the tab of the battery cell passing through the upper end of the top sealing portion; a protection board, including a protection main board, a protection sub-board, and a connecting bridge board, the protection main board being located in the front accommodation notch, the protection sub-board being located in the rear accommodation notch, a first end of the connecting bridge board being connected to the protection main board, and a second end of the connecting bridge board being connected to the protection sub-board; wherein, the tab extends into the rear accommodation notch and is connected to the protection sub-board.

[0007] Further, the connecting bridge board is located above the battery cell, and two ends of the connecting bridge board are respectively connected to the upper edges of the protection main board and the protection sub-board.

[0008] Further, the connecting bridge board includes a plurality of connecting plates arranged at intervals in the width direction of the battery cell, and two ends of each connecting plate are respectively connected to the protection main board and the protection sub-board.

[0009] Further, the protection main board includes a hard board layer and a flexible board layer disposed on one side of the hard board layer close to or away from the protection sub-board, and the first end of the connecting bridge board is connected to the flexible board layer.

[0010] Further, avoiding grooves are provided at the edges of the hard board layer and the flexible board layer, the connecting bridge board is located in the avoiding grooves, and the upper surface of the connecting bridge board is lower than or flush with the notch of the avoiding grooves.

[0011] Further, the tab includes a first tab segment and a second tab segment. The first tab segment is located on the front side of the auxiliary protection plate, and the second tab segment is located on the rear side of the auxiliary protection plate. The lower end of the first tab segment is connected to the battery cell, the upper end of the first tab segment is connected to the upper end of the second tab segment, and the second tab segment is welded to the back surface of the auxiliary protection plate; alternatively, the battery assembly further includes a nickel sheet welded to the front surface of the auxiliary protection plate, and the tab is welded to the nickel sheet.

[0012] Further, the battery assembly further includes an insulating sticker clamped between the auxiliary protection plate and the top sealing portion.

[0013] Further, the battery assembly further includes a head sticker wrapped around the upper end of the battery cell. A protection cavity is formed between the head sticker and the battery cell. The main protection plate, the auxiliary protection plate, and the tab are located in the protection cavity. The protection plate further includes a connecting flexible board. One end of the connecting flexible board is connected to the main protection plate, and the other end of the connecting flexible board extends out of the head sticker.

[0014] Further, the battery cell includes a battery cell body and an insulating film. The insulating film is wrapped around the outside of the battery cell body, and the top sealing portion is arranged at the upper end of the insulating film; and / or, the battery assembly further includes a protection gasket clamped between the lower end of the main protection plate and the battery cell.

[0015] According to another aspect of the present invention, there is provided an electronic device, which includes the battery assembly provided above.

[0016] Applying the technical solution of the present invention, the battery assembly includes a battery cell and a protection plate. The protection plate includes a main protection plate, an auxiliary protection plate, and a connecting bridge plate connecting the main protection plate and the auxiliary protection plate. The main protection plate is placed in the front accommodation notch, and the auxiliary protection plate is placed in the rear accommodation notch. Since the tab extends into the rear accommodation notch and is welded to the auxiliary protection plate, it is avoided that the connection structure of the tab and the protection plate occupies the space of the front accommodation notch, thereby increasing the space for heat dissipation in the front accommodation notch, increasing the heat dissipation space and heat dissipation effect of the main protection plate in the front accommodation notch, and further improving the heat dissipation performance of the protection plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The schematic drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 An exploded view of the battery cell, the protection plate, and the protection gasket of the battery assembly provided by the embodiment of the present invention is shown;

[0019] Figure 2Shows an exploded view of the battery cell, protection board, insulating sticker, and protective gasket of the battery assembly provided by the embodiment of the present invention;

[0020] Figure 3 Shows a schematic structural diagram of the tab of the battery assembly provided by the embodiment of the present invention;

[0021] Figure 4 Shows a schematic structural diagram of the battery assembly provided by the embodiment of the present invention;

[0022] Figure 5 Shows Figure 4 The partial enlarged view of A in

[0023] Figure 6 Shows a schematic structural diagram of another perspective of the battery assembly provided by the embodiment of the present invention.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 10. Battery cell; 11. Tab; 111. First tab segment; 112. Second tab segment; 12. Front accommodation notch; 13. Rear accommodation notch; 14. Insulating film; 141. Extension segment;

[0026] 20. Protection board; 21. Protection main board; 211. Hard board layer; 212. Flexible board layer; 213. Avoidance groove; 22. Protection sub-board; 23. Connection bridge board; 231. Connection board; 24. Connection flexible board;

[0027] 30. Insulating sticker; 40. Protective gasket; 50. Head sticker. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] Such as Figures 1 to 6As shown in the figure, an embodiment of the present utility model provides a battery assembly, which includes a battery cell 10 and a protection board 20. The head of the battery cell 10 has a top sealing part, and the top sealing part divides the head of the battery cell 10 into a front accommodation notch 12 and a rear accommodation notch 13. The tab 11 of the battery cell passes through the upper end of the top sealing part. The protection board 20 includes a protection main board 21, components, a protection sub-board 22, and a connecting bridge board 23. The protection main board 21 is located in the front accommodation notch 12, the components are arranged on the protection main board 21, the protection sub-board 22 is located in the rear accommodation notch 13, the first end of the connecting bridge board 23 is connected to the protection main board 21, and the second end of the connecting bridge board 23 is connected to the protection sub-board 22. Among them, the tab 11 extends into the rear accommodation notch 13 and is connected to the protection sub-board 22.

[0030] When applying the battery assembly provided by this embodiment, the protection board 20 includes a protection main board 21, a protection sub-board 22, and a connecting bridge board 23 connecting the protection main board 21 and the protection sub-board 22. The components can be arranged on the protection main board 21. Place the protection main board 21 in the front accommodation notch 12 and place the protection sub-board 22 in the rear accommodation notch 13. Since the tab 11 extends into the rear accommodation notch 13 and is welded to the protection sub-board 22, it avoids the connection structure of the tab 11 and the protection board 20 from occupying the space of the front accommodation notch 12, thereby increasing the space for heat dissipation in the front accommodation notch 12, increasing the heat dissipation space and heat dissipation effect of the protection main board 21 provided with components in the front accommodation notch 12, and further improving the heat dissipation performance of the protection board 20.

[0031] In this embodiment, the dimension of the front accommodation notch 12 in the thickness direction is greater than the dimension of the rear accommodation notch 13 in the thickness direction. The connecting bridge board 23 adopts a flexible board structure, and the tab 11 is welded to the protection sub-board 22.

[0032] It should be noted that the width direction refers to Figure 1 the left and right direction shown in the figure, the length direction refers to Figure 1 the up and down direction shown in the figure, and the thickness direction refers to Figure 1 the front and back direction shown in the figure.

[0033] Among them, the battery cell 10 is electrically connected to the protection board 20 through the tab 11, and the protection board 20 is electrically connected to the external battery connection terminal through the protection main board 21. The flexible board structure can adopt structures such as FPC or busbar flexible board.

[0034] Such as Figure 1 and Figure 2As shown in the figure, the connecting bridge plate 23 is located above the battery cell 10, and both ends of the connecting bridge plate 23 are respectively connected to the upper edges of the main protection board 21 and the secondary protection board 22. When manufacturing the protection board 20, first lay the main protection board 21, the secondary protection board 22 and the connecting bridge plate 23 flat, and connect both ends of the connecting bridge plate 23 to the upper edges of the main protection board 21 and the secondary protection board 22 respectively (the upper edges here refer to the upper edges in the Figure 1 orientation), and then fold the main protection board 21 and the secondary protection board 22 downward so that the main protection board 21 is located in front of the secondary protection board 22. Since both ends of the connecting bridge plate 23 are respectively connected to the upper edges of the main protection board 21 and the secondary protection board 22, when folding the main protection board 21 and the secondary protection board 22 downward, the connecting bridge plate 23 is easily bent and deformed, preventing the edges of the main protection board 21 and the secondary protection board 22 away from the connecting bridge plate 23 from tilting towards the connecting bridge plate 23, which is beneficial to the subsequent encapsulation operations of the upper end of the battery cell and the protection board 20.

[0035] As Figure 5 shown, the connecting bridge plate 23 includes a plurality of connecting plates 231 arranged at intervals in the width direction of the battery cell 10, and both ends of each connecting plate 231 are respectively connected to the main protection board 21 and the secondary protection board 22. By using a plurality of connecting plates 231 arranged at intervals in the width direction of the battery cell 10, when folding the main protection board 21 and the secondary protection board 22 downward, the connecting bridge plate 23 is easily bent and deformed, further preventing the edges of the main protection board 21 and the secondary protection board 22 away from the connecting bridge plate 23 from tilting towards the connecting bridge plate 23, which is beneficial to the subsequent encapsulation operations of the upper end of the battery cell and the protection board 20.

[0036] As Figure 1 and Figure 2 shown, the main protection board 21 includes a hard board layer 211 and a flexible board layer 212 provided on one side of the hard board layer 211 close to or away from the secondary protection board 22, and the first end of the connecting bridge plate 23 is connected to the flexible board layer 212. By using the main protection board 21, the secondary protection board 22 and the connecting bridge plate 23 with the above structures, the area ratio of the flexible board structure of the protection board 20 can be increased, and the heat dissipation performance and flexibility of the protection board 20 are improved.

[0037] Specifically, the components are arranged on the side of the flexible board layer 212 facing away from the hard board layer 211.

[0038] Among them, the flexible board layer 212, the connecting bridge plate 23 and the secondary protection board 22 can adopt an integrally formed flexible board structure.

[0039] Among them, the secondary protection board 22 can adopt a flexible board structure, a rigid-flex board or a flexible board reinforcement structure with a rigid plate pasted on the flexible board.

[0040] As Figure 5As shown, relief grooves 213 are provided at the edges of the rigid board layer 211 and the flexible board layer 212. The connecting bridge plate 23 is located within the relief grooves 213, and the upper surface of the connecting bridge plate 23 is lower than or flush with the notch of the relief grooves 213. By providing the relief grooves 213, when the connecting bridge plate 23 crosses the protection main board 21 in the thickness direction, it is avoided that the connecting bridge plate 23 protrudes upward from the rigid board layer 211 and the flexible board layer 212, which is beneficial to the subsequent encapsulation operations of the upper end of the battery cell and the protection board 20.

[0041] As Figure 3 shown, the tab 11 includes a first tab segment 111 and a second tab segment 112. The first tab segment 111 is located on the front side of the protection sub-board 22, and the second tab segment 112 is located on the rear side of the protection sub-board 22. The lower end of the first tab segment 111 is connected to the battery cell 10, the upper end of the first tab segment 111 is connected to the upper end of the second tab segment 112, and the second tab segment 112 is welded to the back surface of the protection sub-board 22. By bending the tab 11 backward so that the tab 11 includes the first tab segment 111 and the second tab segment 112, and the second tab segment 112 is located on the rear side of the protection sub-board 22 and is welded to the back surface of the protection sub-board 22, the welding reliability between the tab 11 and the protection sub-board 22 is improved.

[0042] It should be noted that the second tab segment 112 being located on the rear side of the protection sub-board 22 means that the second tab segment 112 is located on the side of the protection sub-board 22 away from the protection main board 21, and the back surface of the protection sub-board 22 refers to the side of the protection sub-board 22 away from the protection main board 21.

[0043] In other embodiments, the battery assembly further includes a nickel sheet welded to the front surface of the protection sub-board 22, and the tab 11 is welded to the nickel sheet. By welding the nickel sheet to the front surface of the protection sub-board 22 and welding the tab 11 to the nickel sheet, there is no need to perform a bending operation on the tab 11, simplifying the process.

[0044] Specifically, the tab 11 and the nickel sheet are laser welded.

[0045] As Figure 2 shown, the battery assembly further includes an insulating sticker 30, and the insulating sticker 30 is clamped between the protection sub-board 22 and the top sealing portion, so as to cover the welding burrs at the welding joint of the tab 11 and the protection sub-board 22 by means of the insulating sticker 30, avoiding the welding burrs from damaging the aluminum plastic film.

[0046] Specifically, the insulating sticker 30 is provided corresponding to the welding position of the tab 11 and the protection sub-board 22 in the thickness direction, so as to reduce the size of the insulating sticker 30 on the premise of ensuring that the insulating sticker 30 can cover the welding burrs generated by the welded connection between the tab 11 and the protection sub-board 22.

[0047] As Figure 6As shown, the battery assembly further includes a head sticker 50 wrapped around the upper end of the battery cell 10. A protection cavity is formed between the head sticker 50 and the battery cell 10. The protection main board 21, the protection sub-board 22, and the electrode tab 11 are located in the protection cavity. The protection board 20 further includes a connecting flexible board 24. One end of the connecting flexible board 24 is connected to the protection main board 21, and the other end of the connecting flexible board 24 extends out of the head sticker 50. By wrapping the head sticker 50 around the upper end of the battery cell 10, it is possible to prevent the upper end of the battery cell 10, the protection main board 21, the protection sub-board 22, and the electrode tab 11 from coming into contact with the outside and causing a short circuit. And since one end of the connecting flexible board 24 is connected to the protection main board 21 or the protection sub-board 22, and the other end of the connecting flexible board 24 extends out of the head sticker 50, the protection main board 21 can be electrically connected to the external battery connection terminal through the connecting flexible board 24.

[0048] Among them, the head sticker 50 wrapped around the upper end of the battery cell 10 is a heat-dissipating sticker.

[0049] In this embodiment, the battery assembly further includes side stickers wrapped around the left and right sides of the battery cell 10.

[0050] As Figure 1 and Figure 2 shown, the battery cell 10 includes a battery cell body and an insulating film 14. The insulating film 14 is wrapped around the outside of the battery cell body, and a top sealing portion is provided at the upper end of the insulating film 14. One end of the electrode tab 11 is electrically connected to the battery cell body, and the other end of the electrode tab 11 passes through the upper end of the top sealing portion and extends into the rear accommodation notch 13 to be welded to the protection sub-board 22. The insulating film 14 plays an insulating and protective role between the battery cell body and the protection board 20 (here, the insulating protection means preventing the direct contact and conduction between the battery cell body and the protection board 20, and does not affect the conduction between the battery cell body and the protection board 20 through the electrode tab).

[0051] Moreover, the insulating sticker 30 is used to prevent the welding burrs from piercing the insulating film 14 or the head sticker 50, improving the insulating and protective effect of the insulating film 14 and the head sticker 50.

[0052] As Figure 1 and Figure 2 shown, the battery assembly further includes a protective gasket 40 clamped between the lower end of the protection main board 21 and the battery cell 10. The protective gasket 40 can prevent the lower end of the protection main board 21 from directly contacting the battery cell 10, playing a protective role for the battery cell 10 and preventing the lower end of the protection main board 21 from scratching the insulating film 14.

[0053] Another embodiment of the present utility model provides an electronic device, which includes the battery assembly provided above. When applying the electronic device provided in this embodiment, since the protection board 20 includes a main protection board 21, a secondary protection board 22, and a connection bridge board 23 connecting the main protection board 21 and the secondary protection board 22, and components are arranged on the main protection board 21. The main protection board 21 is placed in the front accommodation notch 12, and the secondary protection board 22 is placed in the rear accommodation notch 13. Since the ear 11 extends into the rear accommodation notch 13 and is welded to the secondary protection board 22, it is avoided that the connection structure between the ear 11 and the protection board 20 occupies the space of the front accommodation notch 12, thereby increasing the space for heat dissipation in the front accommodation notch 12, increasing the heat dissipation space and heat dissipation effect of the main protection board 21 provided with components in the front accommodation notch 12, and further improving the heat dissipation performance of the protection board 20.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0056] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0057] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0058] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without separate statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0059] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery assembly, characterized in that: The battery assembly comprises: A battery cell (10), wherein the head of the battery cell (10) has a top sealing portion, wherein the top sealing portion divides the head of the battery cell (10) into a front accommodating notch (12) and a rear accommodating notch (13), and the electrode lug (11) of the battery cell passes through the upper end of the top sealing portion; The protection plate (20) comprises a protection main plate (21), a protection sub-plate (22) and a connecting bridge plate (23), wherein the protection main plate (21) is located in the front receiving notch (12), the protection sub-plate (22) is located in the rear receiving notch (13), a first end of the connecting bridge plate (23) is connected to the protection main plate (21), and a second end of the connecting bridge plate (23) is connected to the protection sub-plate (22); Wherein, the pole lug (11) extends into the rear accommodation notch (13) and is connected to the protective sub-plate (22).

2. The battery assembly according to claim 1, characterized in that: The connecting bridge plate (23) is located above the battery core (10), and two ends of the connecting bridge plate (23) are respectively connected to the upper edge of the protective main plate (21) and the upper edge of the protective sub-plate (22).

3. The battery assembly according to claim 2, characterized in that: The connecting bridge plate (23) comprises a plurality of connecting plates (231) arranged at intervals in the width direction of the battery cell (10), and two ends of each connecting plate (231) are respectively connected to the protective main plate (21) and the protective sub-plate (22).

4. The battery assembly according to claim 1, characterized in that: The protective main board (21) comprises a hard board layer (211) and a soft board layer (212) arranged on a side of the hard board layer (211) close to or far from the protective sub-board (22), and the first end of the connecting bridge board (23) is connected to the soft board layer (212).

5. The battery assembly according to claim 4, characterized in that: Avoidance grooves (213) are provided at the edges of the hard board layer (211) and the soft board layer (212), the connecting bridge plate (23) is located in the avoidance groove (213), and the upper surface of the connecting bridge plate (23) is lower than or flush with the notch of the avoidance groove (213).

6. The battery assembly according to claim 1, characterized in that: The pole lug (11) comprises a first pole lug segment (111) and a second pole lug segment (112), the first pole lug segment (111) being located at the front side of the protective sub-plate (22), the second pole lug segment (112) being located at the rear side of the protective sub-plate (22), the lower end of the first pole lug segment (111) being connected to the battery cell (10), the upper end of the first pole lug segment (111) being connected to the upper end of the second pole lug segment (112), and the second pole lug segment (112) being connected to the back side of the protective sub-plate (22) by welding; or, The battery assembly also includes a nickel sheet welded to the front surface of the protective sub-plate (22), and the tab (11) is welded to the nickel sheet.

7. The battery assembly according to claim 1, characterized in that: The battery assembly also includes an insulating sticker (30), and the insulating sticker (30) is sandwiched between the protective sub-plate (22) and the top sealing portion.

8. The battery assembly according to claim 1, characterized in that: The battery assembly also includes a head tape (50) wrapped around the upper end of the battery cell (10), a protective cavity is formed between the head tape (50) and the battery cell (10), the protective main board (21), the protective sub-board (22) and the pole ear (11) are located in the protective cavity, and the protective board (20) also includes a connecting soft board (24), one end of the connecting soft board (24) is connected to the protective main board (21), and the other end of the connecting soft board (24) protrudes from the head tape (50).

9. The battery assembly according to claim 1, characterized in that: The battery cell (10) comprises a battery cell body and an insulating film (14), the insulating film (14) is wrapped around the outer side of the battery cell body, and the top seal portion is arranged at the upper end of the insulating film (14); and / or, The battery assembly further comprises a protective gasket (40) sandwiched between the lower end of the protective main board (21) and the battery core (10).

10. An electronic device, characterized in that: The electronic device comprises the battery assembly according to any one of claims 1 to 9.

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