Insulation, top cover assembly and battery

Abstract

This utility model relates to the field of battery technology, providing an insulating component, a top cover assembly, and a battery. The insulating component includes an insulating component body with a first folded edge and a second folded edge. Along the z-axis, the first and second folded edges are respectively located on both sides of the insulating component body and are circumferentially arranged along the outer edge of the insulating component body. A first receiving groove formed by the first folded edge is used to receive a connecting block, and a second receiving groove formed by the second folded edge is used to receive and cover the protrusion of the top cover body. The insulating component provided by this utility model avoids the exposure of the protrusion of the top cover body, increases the insulation performance of the top cover body, and improves the safety performance of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an insulating component, a top cover assembly, and a battery. Background Technology

[0002] Current battery top cover assemblies typically use a plastic structure between the top cover body and the connecting block to achieve insulation and protection between the connecting block and the top cover body.

[0003] Because an insulating protective layer is applied to the surface of the top cover during the encapsulation process, this layer can only cover a large area. When the top cover is not a planar structure, the insulating protective layer cannot cover all the outer surfaces of the top cover. As a result, the plastic coating does not provide sufficient insulation protection for the top cover, which affects the safety performance of the battery. Utility Model Content

[0004] This invention provides an insulating component, a top cover assembly, and a battery to solve the problem in the prior art where the upper plastic layer provides insufficient insulation and protection to the top cover body, thus affecting the safety performance of the battery.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, the present invention provides an insulating component, including an insulating component body, the insulating component body having a first folded edge and a second folded edge along the z-axis direction, the first folded edge and the second folded edge being respectively disposed on both sides of the insulating component body and arranged circumferentially along the outer edge of the insulating component body, the first accommodating groove formed by the first folded edge being used to accommodate a connecting block, and the second accommodating groove formed by the second folded edge being used to accommodate and cover the protrusion of the top cover body.

[0007] According to the present invention, an insulating component is provided in which the second folded edge is provided with a chamfer on the side facing the top cover body, and the chamfer is located on the groove wall of the second receiving groove.

[0008] According to the present invention, the distance between the side of the second folded edge facing the top cover body and the top cover body is a, where a satisfies: 0.05mm≤a≤0.15mm;

[0009] And / or, the distance between the inner wall of the second folded edge and the protrusion of the top cover body is b, where b satisfies: 0.05mm≤b≤0.1mm.

[0010] According to the present invention, the thickness of the first folded edge ranges from 0.5 to 2 mm.

[0011] Secondly, this utility model provides a top cover assembly, including: a top cover body, a connecting block, and an insulating member as described above, wherein the insulating member is installed between the top cover body and the connecting block, and the insulating member is used to separate the top cover body from the connecting block.

[0012] According to the top cover assembly provided by this utility model, the insulating component further includes:

[0013] The first positioning element is disposed at the bottom of the first receiving groove, and the connecting block is provided with a first positioning hole, and the first positioning element is inserted into the first positioning hole.

[0014] The second positioning element is disposed at the bottom of the second receiving groove, and the top cover body is provided with a second positioning hole, into which the second positioning element is inserted.

[0015] According to the top cover assembly provided by this utility model, it further includes: a pole post;

[0016] The connecting block has a first through hole, the top cover body has a second through hole, and the insulating component has a third through hole. The first through hole, the second through hole, and the third through hole are arranged opposite to each other, and the pole post passes through the first through hole, the second through hole, and the third through hole.

[0017] Multiple first positioning elements and multiple second positioning elements are provided, and the multiple first positioning elements and multiple second positioning elements are arranged circumferentially around the third through hole.

[0018] According to the present invention, the thickness of the top cover body is t, and t satisfies: 1.5mm≤t≤3mm.

[0019] According to the present invention, the height of the protrusion of the top cover body is h;

[0020] h satisfies: 0.5mm≤h≤2.5mm, and h is less than the thickness of the top cover body.

[0021] Thirdly, this utility model provides a battery, including: a housing, an electrode assembly, and a top cover assembly as described above, wherein the electrode assembly is located inside the housing, and the top cover assembly is fixed to the opening end of the housing.

[0022] The insulating component, top cover assembly, and battery provided by this utility model, by setting a first folded edge and a second folded edge on the body of the insulating component, the first folded edge forms a first receiving groove for receiving a connecting block, and the second folded edge forms a second receiving groove for receiving and covering the protrusion of the top cover body, so that the sides of the protrusion are covered by the insulating component, avoiding the protrusion from being exposed, increasing the insulation performance of the top cover body, and improving the safety performance of the battery. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is one of the three-dimensional structural schematic diagrams of the insulating component provided by this utility model.

[0025] Figure 2 This is the second three-dimensional structural schematic diagram of the insulating component provided by this utility model.

[0026] Figure 3 This is a top view of the insulating component provided by this utility model.

[0027] Figure 4 This utility model provides Figure 3 A sectional view of AA.

[0028] Figure 5 This is a three-dimensional structural diagram of the top cover assembly provided by this utility model.

[0029] Figure 6 This is a top view of the top cover assembly provided by this utility model.

[0030] Figure 7 This utility model provides Figure 6 A cross-sectional view of BB.

[0031] Figure 8 This is a three-dimensional structural diagram of the top cover body provided by this utility model.

[0032] Figure 9 This is one of the three-dimensional structural schematic diagrams of the connecting block provided by this utility model.

[0033] Figure 10 This is the second three-dimensional structural schematic diagram of the connecting block provided by this utility model.

[0034] Figure label:

[0035] 1. Insulating component; 11. Insulating component body; 12. First folded edge; 13. Second folded edge; 14. First receiving groove; 15. Second receiving groove; 16. First positioning component; 17. Second positioning component; 18. Third through hole;

[0036] 2. Top cover body; 21. Protrusion; 22. Second positioning hole; 23. Second through hole;

[0037] 3. Connecting block; 31. First positioning hole; 32. First through hole;

[0038] 4. Terminal post; 5. Sealing ring. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of clarifying the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0042] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] The following is combined with Figures 1 to 10 The insulating component, top cover assembly, and battery provided in this utility model embodiment will be described in detail through specific embodiments and application scenarios.

[0045] Firstly, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides an insulating component 1, including an insulating component body 11. The insulating component body 11 has a first folded edge 12 and a second folded edge 13. Along the z-axis direction, the first folded edge 12 and the second folded edge 13 are respectively disposed on both sides of the insulating component body 11 and are arranged circumferentially along the outer edge of the insulating component body 11. The first receiving groove 14 formed by the first folded edge 12 is used to receive the connecting block 3, and the second receiving groove 15 formed by the second folded edge 13 is used to receive and cover the protrusion 21 of the top cover body 2.

[0046] Understandably, in order to increase the height of the terminal post 4 and the strength of the battery, and to improve the battery energy density, a protrusion 21 is usually provided on the top cover body 2. Since an insulating protective layer is applied to the surface of the top cover body 2 during packaging, and the insulating protective layer is usually applied over a large area, it cannot be applied to the protrusion 21 of the top cover body 2, which would easily cause the top cover body 2 to be exposed, affecting the insulation and protection performance.

[0047] like Figure 1 As shown, it should be noted that in the coordinate directions of this embodiment, the x-axis is along the length direction of the insulating member 1, the y-axis is along the width direction of the insulating member 1, and the z-axis is along the height direction of the insulating member.

[0048] An insulating component 1 is sandwiched between the connecting block 3 and the top cover body 2. The first folded edge 12 of the insulating component 1 is bent toward the connecting block 3, and the first receiving groove 14 formed by the first folded edge 12 can accommodate the connecting block 3, while the inner wall of the first folded edge 12 provides insulation protection for the connecting block 3. The second folded edge 13 of the insulating component 1 is bent toward the protrusion 21 of the top cover body 2, and the second receiving groove 15 formed by the second folded edge 13 can accommodate the protrusion 21, while the inner wall of the second folded edge 13 provides insulation protection for the outer wall of the protrusion 21. In the height direction of the insulating component 1, the second folded edge 13 isolates the protrusion 21 of the top cover body 2, preventing the insulating protective layer from being unable to be laid on the outer wall of the protrusion 21, thereby improving the safety performance of the top cover body 2.

[0049] The insulating component 1 provided by this utility model has a first folded edge 12 and a second folded edge 13 on the insulating component body 11. The first accommodating groove 14 formed by the first folded edge 12 is used to accommodate the connecting block 3, and the second accommodating groove 15 formed by the second folded edge 13 is used to accommodate and cover the protrusion 21 of the top cover body 2, so that the sides of the protrusion 21 are covered by the insulating component 1, avoiding the protrusion 21 from being exposed, increasing the insulation performance of the top cover body 2, and improving the safety performance of the battery.

[0050] like Figure 4 As shown, the second folded edge 13 of this embodiment has a chamfer on the side facing the top cover body 2, and the chamfer is located on the groove wall of the second receiving groove 15.

[0051] Understandably, in order to ensure that there is sufficient clearance between the inner wall of the second fold 13 and the protrusion 21 of the top cover body 2, and to avoid interference between the second fold 13 and the protrusion 21, this embodiment provides a chamfer on the inner wall of the second fold 13. The chamfer creates an oblique clearance space between the inner wall of the second fold 13 and the outer wall of the protrusion 21, which can maintain the shape of the top cover body 2 during installation and positioning.

[0052] like Figure 7 As shown, in this embodiment, the distance between the inner wall of the second folded edge 13 and the protrusion 21 of the top cover body 2 is b, and b satisfies 0.05mm≤b≤0.1mm.

[0053] Understandably, a certain gap needs to be left between the inner wall of the second fold 13 and the outer wall of the protrusion 21 to facilitate the installation of the insulating component 1, so that the insulating component 1 can cover the protrusion 21 without affecting the structure of the top cover body 2 itself.

[0054] Specifically, the distance between the inner wall of the second folded edge 13 and the protrusion 21 of the top cover body 2 can be 0.05mm, 0.075mm, or 0.1mm.

[0055] like Figure 7As shown, in this embodiment, the distance between the second folded edge 13 facing the top cover body 2 and the top cover body 2 is a, where a satisfies: 0.05mm≤a≤0.15mm.

[0056] Understandably, the second folded edge 13 is circumferentially arranged around the protrusion 21, and therefore the side of the second folded edge 13 facing the top cover body 2 is also circumferentially arranged. To ensure that the second folded edge 13 completely covers the protrusion 21, a small gap needs to be provided on the circumferential side of the second folded edge 13 facing the top cover body 2. Since the top cover body 2 is a metal part and the second folded edge 13 is usually a plastic part, when the plastic part is installed facing the metal part, the existing assembly errors and manufacturing errors may cause the plastic part and the metal part to interfere, causing the second folded edge 13 to become brittle and deform. The assembly gap a ensures the shape of the second folded edge 13 after assembly.

[0057] Specifically, the distance between the side of the second folded edge 13 facing the top cover body 2 and the top cover body 2 can be 0.05mm, 0.1mm, or 0.15mm.

[0058] like Figure 4 As shown, the thickness of the first folded edge 12 in this embodiment ranges from 0.5 to 2 mm.

[0059] Understandably, the thickness of the insulating component 1 needs to ensure the wrapping strength, but it cannot be too thick to cause the insulating component 1 to shrink and deform. Therefore, a consistent thickness needs to be set.

[0060] Specifically, the thickness of the first fold 12 can be 0.5mm, 1.25mm, or 2mm.

[0061] Secondly, such as Figure 5 , Figure 6 and Figure 7 As shown, this embodiment provides a top cover assembly, including a top cover body 2, a connecting block 3, and an insulating member 1 as described above. The insulating member 1 is installed between the top cover body 2 and the connecting block 3, and is used to separate the top cover body 2 from the connecting block 3.

[0062] Specifically, since the top cover assembly includes an insulating component 1, and the specific structure of the insulating component 1 is as described in the above embodiments, the top cover assembly shown in this embodiment includes all the technical solutions of the above embodiments. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above embodiments, which will not be described in detail here.

[0063] Understandably, the insulating component 1 is sandwiched between the top cover body 2 and the connecting block 3, separating the top cover body 2 and the connecting block 3 to prevent short circuits. To increase the height, the top cover body 2 is also provided with a protrusion 21.

[0064] Specifically, the connecting block 3 can be a riveted aluminum block, the top cover body 2 can be an aluminum plate, and the insulating component 1 can be a plastic component.

[0065] like Figure 1 , Figure 2 , Figure 8 and Figure 10 As shown, the insulating component 1 in this embodiment further includes:

[0066] The first positioning element 16 is located at the bottom of the first receiving groove 14, and the connecting block 3 is provided with a first positioning hole 31, in which the first positioning element 16 is inserted.

[0067] The second positioning element 17 is located at the bottom of the second receiving groove 15, and the top cover body 2 is provided with a second positioning hole 22, in which the second positioning element 17 is inserted.

[0068] Understandably, since the insulating component 1 is sandwiched between the connecting block 3 and the top cover body 2, in order to ensure installation accuracy when assembling the connecting block 3, the insulating component 1, and the top cover body 2, this embodiment provides a first positioning component 16 on one side of the insulating component 1 and a second positioning component 17 on the other side. Furthermore, a first positioning hole 31 is provided on the side of the connecting block 3 facing the insulating component 1, and a second positioning hole 22 is provided on the side of the top cover body 2 facing the insulating component 1. Through the insertion and engagement of the first positioning component 16 with the first positioning hole 31, and the insertion and engagement of the second positioning component 17 with the second positioning hole 22, the positioning of the connecting block 3, the top cover body 2, and the insulating component 1 can be conveniently achieved during assembly simply by aligning the first positioning component 16 with the first positioning hole 31 and rotating the second positioning component 17 towards the second positioning hole 22. This avoids repeated adjustments and trial assembly, improving assembly efficiency.

[0069] Meanwhile, since the top cover assembly is arranged in rows during assembly, it will be subjected to torque. The first positioning member 16 can increase the contact area between the connecting block 3 and the insulating member 1, and the second positioning member 17 can increase the contact area between the top cover body 2 and the insulating member 1, thereby restricting the relative rotation of the insulating member 1 with respect to the connecting block 3 and the top cover body 2, thereby enhancing the torque strength of the top cover assembly.

[0070] Specifically, the first positioning element 16 and the second positioning element 17 can be circular protrusions or polygonal protrusions. Correspondingly, the first positioning hole 31 and the second positioning hole 22 can be circular holes or polygonal holes. It is only necessary to ensure that the shapes of the first positioning element 16 and the first positioning hole 31, as well as the second positioning element 17 and the second positioning hole 22, are compatible.

[0071] like Figure 5 , Figure 8 , Figure 9 and Figure 10As shown, the top cover assembly in this embodiment also includes: pole post 4.

[0072] The connecting block 3 has a first through hole 32, the top cover body 2 has a second through hole 23, and the insulating component 1 has a third through hole 18. The first through hole 32, the second through hole 23 and the third through hole 18 are arranged opposite to each other, and the pole post 4 passes through the first through hole 32, the second through hole 23 and the third through hole 18.

[0073] Multiple first positioning elements 16 and multiple second positioning elements 17 are provided, and the multiple first positioning elements 16 and multiple second positioning elements 17 are arranged circumferentially around the third through hole 18.

[0074] Understandably, the top cover body 2 is also provided with a terminal post 4, which is used to weld to the battery's tabs. The terminal post 4 passes through the first through hole 32, the second through hole 23 and the third through hole 18, so that one end of the terminal post 4 is exposed in the connecting block 3, and the other end of the terminal post 4 can face the electrode group.

[0075] Specifically, the wall of the first through hole 32 is stepped, and the part of the pole post 4 inside the first through hole 32 has a stepped surface. The stepped structure is adapted to the stepped surface to realize the riveting fit between the connecting block 3 and the pole post 4.

[0076] A sealing ring 5 is also provided between the second through hole 23 and the pole post 4. The sealing ring 5 is sleeved on the outer wall of the pole post 4 to isolate the pole post 4 from the top cover body 2 and prevent electrical connection between the pole post 4 and the protrusion 21 of the top cover body 2.

[0077] Since the centers of the first through hole 32, the second through hole 23 and the third through hole 18 are all aligned, the pole post 4, the top cover body 2 and the connecting block 3 can be assembled along the same center.

[0078] To enhance the torsional strength of the connecting block 3, the top cover body 2, and the insulating member 1, this embodiment provides multiple first positioning members 16 and multiple second positioning members 17. The multiple first positioning members 16 and multiple second positioning members 17 are arranged around the third through hole 18, resulting in a greater torsional strength of the connecting block 3, the top cover body 2, and the insulating member 1 relative to the pole post 4.

[0079] Specifically, this embodiment is provided with two first positioning members 16 and two second positioning members 17. The two first positioning members 16 and two second positioning members 17 are symmetrically arranged with respect to the third through hole 18 to ensure that the torque on the connecting block 3 and the top cover body 2 is relatively balanced.

[0080] like Figure 7 As shown, the thickness of the top cover body 2 in this embodiment is t, and t satisfies: 1.5mm≤t≤3mm.

[0081] Understandably, in order to ensure the strength of the top cover body 2, the top cover body 2 needs to be set with a certain thickness t. However, the top cover body 2 cannot be too thick, which would affect the energy density of the battery. Therefore, the thickness of the top cover body 2 is within a certain range.

[0082] Specifically, the thickness of the top cover body 2 can be 1.5mm, 2.25mm, or 3mm.

[0083] like Figure 7 As shown, the height of the protrusion 21 of the top cover body 2 in this embodiment is h; h satisfies: 0.5mm≤h≤2.5mm, and h is less than the thickness of the top cover body 2.

[0084] Understandably, the height h of the protrusion 21 also needs to be within a certain range, neither exceeding the thickness of the top cover body 2 nor lacking sufficient strength.

[0085] Specifically, the height of the protrusion 21 of the top cover body 2 can be 0.5mm, 1.5mm, or 2.5mm, and it needs to be less than the thickness of the top cover body 2.

[0086] Thirdly, this embodiment provides a battery including a housing, an electrode assembly, and a top cover assembly as described above. The electrode assembly is located inside the housing, and the top cover assembly is fixed to the opening end of the housing.

[0087] Specifically, since the battery includes a top cover assembly, and the specific structure of the top cover assembly is as described in the above embodiments, the battery shown in this embodiment includes all the technical solutions of the above embodiments. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above embodiments, which will not be described in detail here.

[0088] It is understood that the top cover assembly of this embodiment has a top cover body 2, a connecting block 3 and an insulating member 1. The second receiving groove 15 formed by the second folded edge 13 of the insulating member 1 can accommodate and cover the protrusion 21 of the top cover body 2, thereby improving the safety performance of the top cover body 2.

[0089] The pole post 4 of the top cover assembly is connected to the pole lug of the pole group. The top cover assembly is placed over the opening end of the housing to fix the pole group inside the housing.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An insulating component, characterized in that, The device includes an insulating body, which has a first folded edge and a second folded edge along the z-axis. The first folded edge and the second folded edge are respectively disposed on both sides of the insulating body and are arranged circumferentially along the outer edge of the insulating body. The first accommodating groove formed by the first folded edge is used to accommodate the connecting block, and the second accommodating groove formed by the second folded edge is used to accommodate and cover the protrusion of the top cover body.

2. The insulating component according to claim 1, characterized in that, The second folded edge has a chamfer on the side facing the top cover body, and the chamfer is located on the groove wall of the second receiving groove.

3. The insulating component according to claim 1, characterized in that, The distance between the side of the second folded edge facing the top cover body and the top cover body is a, where a satisfies: 0.05mm≤a≤0.15mm; And / or, the distance between the inner wall of the second folded edge and the protrusion of the top cover body is b, where b satisfies: 0.05mm≤b≤0.1mm.

4. The insulating component according to claim 1, characterized in that, The thickness of the first folded edge ranges from 0.5 to 2 mm.

5. A top cover assembly, characterized in that, It includes a top cover body, a connecting block, and an insulating element as described in any one of claims 1 to 4, wherein the insulating element is installed between the top cover body and the connecting block, and the insulating element is used to separate the top cover body from the connecting block.

6. The top cover assembly according to claim 5, characterized in that, The insulating component further includes: The first positioning element is disposed at the bottom of the first receiving groove, and the connecting block is provided with a first positioning hole, and the first positioning element is inserted into the first positioning hole. The second positioning element is disposed at the bottom of the second receiving groove, and the top cover body is provided with a second positioning hole, into which the second positioning element is inserted.

7. The top cover assembly according to claim 6, characterized in that, Also includes: pole; The connecting block has a first through hole, the top cover body has a second through hole, and the insulating component has a third through hole. The first through hole, the second through hole, and the third through hole are arranged opposite to each other, and the pole post passes through the first through hole, the second through hole, and the third through hole. Multiple first positioning elements and multiple second positioning elements are provided, and the multiple first positioning elements and multiple second positioning elements are arranged circumferentially around the third through hole.

8. The top cover assembly according to claim 5, characterized in that, The thickness of the top cover body is t, and t satisfies: 1.5mm≤t≤3mm.

9. The top cover assembly according to claim 6, characterized in that, The height of the protrusion on the top cover body is h; h satisfies: 0.5mm≤h≤2.5mm, and h is less than the thickness of the top cover body.

10. A battery, characterized in that, It includes a housing, an electrode assembly, and a top cover assembly as described in any one of claims 5 to 9, wherein the electrode assembly is located within the housing and the top cover assembly is fixed to an open end of the housing.

Images