Battery cover plate assembly, battery and electric equipment

Abstract

The utility model relates to a battery cover plate assembly, a battery and electric equipment, the battery cover plate assembly is applied to the battery, the battery cover plate assembly comprises a pole, a riveting piece, a sealing assembly and a cover plate, the pole is electrically connected with a battery core of the battery; the riveting piece is arranged around the pole and abuts against the sealing assembly so as to fix the sealing assembly; the sealing assembly is arranged on the cover plate and surrounds the riveting piece; the cover plate is arranged at the end part of a shell of the battery, a through hole is formed in the cover plate, and the sealing assembly is propped against the inner wall of the through hole. The battery cover plate has the effect of reducing the copper material of the pole in the battery cover plate so as to reduce the preparation cost of the battery.

Description

Technical Field

[0001] The present application relates to the technical field of battery cover plate structures, and in particular to a battery cover plate assembly, a battery and an electrical device. Background Art

[0002] At present, the cover structure used in batteries (such as cylindrical batteries) generally has a pole structure. Among them, the pole structure is mostly used in the negative electrode. One end of the pole is located inside the battery, and the other end is mostly protruding from the outside of the cover. In order to ensure good conductivity of the pole, copper material is often used to prepare the pole.

[0003] In the related art, the battery pole adopts an integrated structure. In order to meet the requirements of current conduction and welding, the size of the pole is designed to be larger, and more copper material is used, which makes the overall cost of the battery higher. Utility Model Content

[0004] The present application is proposed to solve the above-mentioned problems. According to one aspect of the present application, a battery cover assembly is provided, which is applied to a battery, and includes a pole, a rivet, a sealing assembly and a cover, wherein: the pole is electrically connected to the battery cell of the battery; the rivet is arranged around the pole, and abuts against the sealing assembly to fix the sealing assembly; the sealing assembly is arranged on the cover and around the rivet; the cover is arranged at the end of the outer shell of the battery, and a through hole is arranged on the cover, and the sealing assembly abuts against the inner wall of the through hole.

[0005] Exemplarily, the sealing assembly includes a first sealing ring and a second sealing ring, the first sealing ring includes a first sealing portion and a first annular portion, the second sealing ring includes a second sealing portion and a second annular portion, the first sealing portion and the second sealing portion are located in the through hole and abut against the rivet; a groove is provided on the cover plate, the groove is located at the top of the through hole and is connected to the through hole, and the groove is arranged around the through hole; the first annular portion is located in the groove, and a first bending portion is provided at the bottom of the rivet, and the first bending portion abuts against the second annular portion.

[0006] Exemplarily, a limiting ring is further included, which is arranged on the cover plate and fixed by the rivet to limit the sealing assembly.

[0007] Exemplarily, the limiting ring is arranged around the rivet, the first surface of the limiting ring is sequentially provided with a first table surface, a second table surface and a third table surface, the second surface of the limiting ring includes a first area and a second area, the second area surrounds the first area, and the first area of ​​the second surface of the limiting ring is against the sealing assembly; the rivet is provided with a second bending portion, and the second bending portion is against the first table surface.

[0008] Exemplarily, an insulating ring is further included, the insulating ring includes an insulating portion and an extending portion, the insulating portion is sleeved on the outside of the limiting ring, and the second area of ​​the second surface of the limiting ring is against the extending portion.

[0009] Exemplarily, a top cover is further included, wherein the top cover is connected to the limiting ring, a portion of the bottom of the top cover abuts against the third table surface, and the top cover is connected to the first end of the pole.

[0010] Exemplarily, the top cover is connected to the limiting ring, a portion of the top cover is abutted against the third table surface, another portion of the top cover is provided with a protrusion, the protrusion is located on the inner side of the rivet and connected to the first end of the pole, and the second end of the pole is electrically connected to the battery cell.

[0011] Exemplarily, the pole is electrically connected to the battery cell via a current collecting disk, the current collecting disk includes a connecting portion and an elastic portion provided on the connecting portion, the connecting portion is electrically connected to the battery cell, and the second end of the pole is provided on the elastic portion.

[0012] Exemplarily, the elastic portion includes an elastic plate and a support plate, the second end of the pole is arranged on the support plate, one end of the elastic plate is arranged on the support plate, and the other end is connected to the connection portion.

[0013] Exemplarily, the second end of the pole is welded to or integrally formed with the elastic portion.

[0014] According to another aspect of the present application, a battery is provided, on which the above-mentioned battery cover assembly is arranged.

[0015] According to another aspect of the present application, there is provided an electrical device, the electrical device comprising the above-mentioned battery.

[0016] The battery cover assembly in the present application has a split design for the integrated pole, which is divided into a pole and a rivet structure. The pole and the rivet are arranged on the through hole of the cover, and the pole is used for flow diversion, and the sealing assembly is fixed by the rivet for sealing; because the rivet is used for assembly and connection but not for flow diversion, the size of the pole itself can be designed to be smaller, thereby reducing the copper material and reducing the overall preparation cost. The present application has the effect of reducing the preparation cost of the battery cover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1 An exploded view of the battery cover assembly in the first embodiment of the present application is shown.

[0019] Figure 2 A cross-sectional view of the battery cover assembly in the first embodiment of the present application is shown.

[0020] Figure 3 An exploded view of the battery cover assembly in the second embodiment of the present application is shown.

[0021] Figure 4 A cross-sectional view of the battery cover assembly in the second embodiment of the present application is shown.

[0022] 1. The axial direction of the present invention is as follows: 110, cover plate; 111, through hole; 112, groove; 120, pole; 130, rivet; 131, first bending portion; 132, second bending portion; 140, first sealing ring; 141, first annular portion; 142, first sealing portion; 150, second sealing ring; 151, second annular portion; 152, second sealing portion; 160, limiting ring; 161, first table surface; 162, second table surface; 163, third table surface; 170, insulating ring; 171, insulating portion; 172, extension portion; 180, top cover; 181, protrusion; 190, collecting plate; 191, connecting portion; 192, elastic plate; 193, supporting plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present application more obvious, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0024] Embodiment 1

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a battery cover assembly, which is applied to a battery and includes a pole 120 , a rivet 130 , a sealing assembly and a cover 110 .

[0026] Among them: the pole 120 is electrically connected to the battery cell; the rivet 130 is arranged around the pole 120 and abuts against the sealing assembly to fix the sealing assembly; the sealing assembly is arranged on the cover plate 110 and around the rivet 130; the cover plate 110 is arranged at the end of the battery shell, and a through hole 111 is provided on the cover plate 110, and the sealing assembly abuts against the inner wall of the through hole 111.

[0027] The battery cover assembly in the present application has a split design for the integrated pole 120, which is divided into a pole 120 and a rivet 130 structure. The pole 120 and the rivet 130 are arranged on the through hole 111 of the cover 110, and the pole 120 is used for flow diversion, and the rivet 130 is used to achieve fixation with the sealing component for sealing; because the rivet 130 is only used for assembly and connection but not for flow diversion, it is not necessary to use copper materials with strong conductivity for preparation, and the size of the pole 120 itself can be designed to be smaller, thereby reducing the copper material to reduce the overall preparation cost. The present application has the effect of reducing the preparation cost of the battery cover assembly.

[0028] Exemplarily, the rivet 130 may be a stainless steel structure, which may be formed by stamping, has high mechanical strength and rust resistance, and has lower cost than copper materials.

[0029] Exemplarily, the sealing assembly includes a first sealing ring 140 and a second sealing ring 150 , wherein the first sealing ring 140 includes a first sealing portion 142 and a first annular portion 141 , and the second sealing ring 150 includes a second sealing portion 152 and a second annular portion 151 , wherein the first sealing portion 142 and the second sealing portion 152 are located in the through hole 111 and abut against the rivet 130 .

[0030] The first sealing ring 140 and the second sealing ring 150 are used to seal the through hole 111. The first sealing portion 142 and the second sealing portion 152 are both located in the through hole 111, and the inner side thereof abuts against the rivet 130 and the outer side abuts against the inner wall of the through hole 111. After the assembly is completed, the bottom of the first sealing portion 142 and the top of the second sealing portion abut tightly. In the embodiment of the present application, the sealing assembly is fixed by the rivet 130 to achieve sealing, and a smaller pole 120 can be used, thereby reducing the size of the pole 120.

[0031] The cover plate 110 is provided with a groove 112, which is located at the top of the through hole 111 and communicates with the through hole 111, and the groove 112 is arranged around the through hole 111. After the sealing assembly is assembled, the first annular portion 141 is located in the groove 112, and the bottom of the rivet 130 is provided with a first bent portion 131, which abuts against the second annular portion 151. The second bent portion 132 provides support for the second sealing ring 150, so that the second annular portion 151 in the second sealing ring 150 can abut against the bottom of the cover plate 110, thereby fixing the second sealing ring 150.

[0032] Exemplarily, the first sealing ring 140 and the second sealing ring 150 may be made of the same rubber material, and the elasticity of the first sealing ring 140 and the second sealing ring 150 is used to seal the through hole 111 to maintain the pressure inside the battery and prevent the outflow of the electrolyte.

[0033] The battery cover assembly in the embodiment of the present application also includes a limit ring 160 and a top cover 180. Among them, the limit ring 160 is sleeved on the rivet 130 and arranged around the rivet 130. The first surface of the limit ring 160 is sequentially provided with a first table 161, a second table 162 and a third table 163, and the second surface of the limit ring 160 includes a first area and a second area, and the second area surrounds the first area. The first area of ​​the second surface of the limit ring 160 is against the first annular portion 141 of the first sealing ring 140. In the figure, the first surface of the limit ring 160 is located at the top and the second surface is located at the bottom, that is, a part of the bottom of the limit ring 160 acts on the first sealing ring 140. The first table 161, the second table 162, and the third table 163 are arranged in sequence from the bottom to the top of the limit ring 160. Among them, the height of each of the first table 161, the second table 162 and the third table 163 can be selected to be 0.2-1.0mm.

[0034] The top of the rivet 130 is provided with a second bent portion 132, which abuts against the first table 161 to fix the limiting ring 160. The second bent portion 132 is formed by extruding the rivet 130 during the assembly process, and the second bent portion 132 acts on the first table 161 after bending to fix the limiting ring 160.

[0035] Exemplarily, the top cover 180 is installed on the top of the pole 120, the first surface of the top cover 180 is flush with the first surface of the limiting ring 160, a part of the bottom of the top cover 180 is against the third table 163, and the top cover 180 is connected to the first end of the pole 120. Among them, the first surface and the second surface of the top cover 180 correspond to the surfaces of the top and bottom of the top cover 180 respectively. In the embodiment of the present application, the top cover 180 is a flat disc-shaped structure, and the top cover 180 is connected to both the pole 120 and the limiting ring 160. The current diversion method from the pole 120 to the top cover 180 is realized, and the electrical equipment and the like can be electrically connected to the top cover 180 to realize the current diversion from the inside of the battery. Exemplarily, the limiting ring 160 in the present application is mainly used to fix the sealing assembly and the top cover 180, and it itself is not used for diversion. It is preferred to use a stainless steel material with a lower cost, but it can also be set to the same material as the top cover 180, while having a high mechanical strength, conducting electricity. The preferred material of the top cover 180 is a material with higher conductivity, such as copper, copper-plated nickel, and the like.

[0036] Exemplarily, after the top cover 180 is installed on the limiting ring 160, a weld is left between the edge of the top cover 180 and the limiting ring 160, and the top cover 180 and the limiting ring 160 can be fixedly connected and sealed at the weld by laser welding. Exemplarily, after the second bending portion 132 on the rivet 130 is bent, its top is flush with the second table 162 on the limiting ring 160, and after the limiting ring 160 is fixed, there is still a space for avoidance between the rivet 130 and the top cover 180. Reduce the influence of the rivet 130 structure on the welding process of the top cover 180. After the welding process of the top cover 180 is completed, the first end of the pole 120, that is, the top of the pole 120, can be connected to the top cover 180 by penetration welding, and the pole 120, the top cover 180, and the limiting ring 160 are connected together to achieve the installation and fixation of the cover assembly.

[0037] Exemplarily, the battery cover assembly in the embodiment of the present application also includes an insulating ring 170, and the insulating ring 170 includes an insulating portion 171 and an extension portion 172. The insulating portion 171 is sleeved on the outside of the limiting ring 160, and the extension portion 172 is located in the groove 112. The second area of ​​the second surface of the limiting ring 160 is against the extension portion 172. Among them, the extension portion 172 and the insulating portion 171 are both ring-mounted, the outer side of the extension portion 172 is against the inner wall of the groove 112, and the inner side of the extension portion 172 is tightly against the first annular portion 141 of the first sealing ring 140. The insulating ring 170 has the effect of further sealing the cover 110, and the insulating portion 171 is tightly against the outer side of the limiting ring 160, which can further fix the limiting ring 160, making the installation structure more stable. The first area and the second area of ​​the second surface of the bottom of the limiting ring 160 are respectively tightly against the first annular portion 141 and the extension portion 172, providing effective support for the limiting ring 160. In addition, the insulating ring 170 and the first sealing ring 140 both have a certain elasticity and can provide a buffer when a collision occurs.

[0038] The battery cover assembly in the embodiment of the present application further includes a current collecting plate 190, through which the pole 120 is electrically connected to the battery cell. The current collecting plate 190 includes a connecting portion 191 and an elastic portion provided on the connecting portion 191, the connecting portion 191 is electrically connected to the battery cell, and the second end of the pole 120 is provided on the elastic portion. The first end of the pole 120 is used to connect to the top cover 180, and the second end is connected to the elastic portion of the current collecting plate 190, thereby achieving current diversion.

[0039] Exemplarily, the elastic portion includes an elastic plate 192 and a support plate 193, the second end of the pole 120 is arranged on the support plate 193, one end of the elastic plate 192 is arranged on the support plate 193, and the other end is connected to the connecting portion 191. The connecting portion 191, the elastic plate 192 and the support plate 193 are all made of conductive metal materials for current diversion. There are multiple elastic plates 192 on the collecting plate 190 (four are shown in the figure), and the elastic plates 192 are arranged in a circular array with the axis of the connecting portion 191 as the center, and the two ends of each elastic plate 192 are respectively connected to the support plate 193 and the connecting portion 191.

[0040] Exemplarily, the second end of the pole 120 can be connected to the support plate 193 of the elastic part by welding, or the pole 120 and the elastic part are integrally formed. When the pole 120 and the support plate 193 are welded, a hole is formed on the support plate 193 for matching and welding with the pole 120.

[0041] On the one hand, the current collecting plate 190, the pole 120 and the top cover 180 can be used to guide the flow. On the other hand, the current collecting plate 190 is provided with an elastic plate 192 and a support plate 193, which can play an effective buffering effect. It can avoid the problem of the pole ear tearing failure caused by the displacement of the battery cell when the battery falls. In addition, there is a long distance between the current collecting plate 190 and the sealing assembly, and there is also a rivet 130 between them. When the current collecting plate 190 is conducting the flow, the phenomenon of heat generation is not easy to cause damage to the sealing assembly.

[0042] In the embodiment of the present application, the assembly process of the battery cover assembly is as follows: first, the connection between the collector plate 190 and the pole 120 and the connection between the collector plate 190 and the internal battery cell of the battery are performed (if the collector plate 190 and the pole 120 are integrally formed, the step of connecting with the pole 120 is ignored). Then, the cover plate 110, the rivet 130, the sealing assembly, and the insulating ring 170 are connected and assembled. During the assembly process, the rivet 130 is squeezed, so that a second bent portion 132 appears on the top of the rivet 130. The second bent portion 132 acts on the limiting ring 160, and the limiting ring 160 and the rivet 130 are welded to fix the limiting ring 160, thereby fixing the sealing assembly and the insulating ring 170. The cover plate 110 is connected to the battery housing to complete the fixing of the cover plate assembly, and finally the top cover 180 is installed on the limiting ring 160 to fix the limiting ring 160 and the top cover 180. The top cover 180 and the pole 120 are then welded and fixed by laser penetration welding to complete the assembly of the cover plate assembly on the battery.

[0043] The battery cover assembly in the present application has a split design for the integrated pole 120, which is divided into a structure of the pole 120 and a rivet 130. The pole 120 and the rivet 130 are arranged on the through hole 111 of the cover 110, and the pole 120 is used for diversion, and the rivet 130 is used to achieve connection with the sealing assembly for sealing; because the rivet 130 is used for assembly and connection but not for diversion, copper material is not required for preparation, and the size of the pole 120 itself can be designed to be smaller, thereby reducing the use of copper to reduce the overall preparation cost. The present application has the effect of reducing the preparation cost of the battery cover assembly. In addition, the collecting plate 190 is provided with an elastic plate 192 and a support plate 193, which can play an effective buffering effect and can avoid the problem of ear tearing failure caused by the displacement of the battery cell when the battery falls.

[0044] Embodiment 2

[0045] like Figure 3 and Figure 4As shown, an embodiment of the present application provides a battery cover assembly, which is applied to a battery, and includes a pole 120, a rivet 130, a sealing assembly and a cover 110. Among them: the pole 120 is electrically connected to the battery cell; the rivet 130 is sleeved on the outside of the pole 120 and connected to the sealing assembly; the sealing assembly is sleeved on the outside of the rivet 130; the cover 110 is arranged at the end of the outer shell of the battery, and a through hole 111 is provided on the cover 110, and the sealing assembly is against the inner wall of the through hole 111. It also includes: a top cover 180, a limiting ring 160, an insulating ring 170 and a current collecting plate 190. Among them, the structures of the limiting ring 160, the cover 110, the sealing assembly, the rivet 130 and the insulating ring 170 are the same as those in the above-mentioned embodiment 1, and will not be repeated here.

[0046] The difference between the embodiment of the present application and the above-mentioned embodiment 1 is that: in the embodiment of the present application, the pole 120 and the collector plate 190 are integrally formed, and the first end (top) of the pole 120 is located in the through hole 111. The top cover 180 is connected to the limit ring 160, a part of the top cover 180 is against the third table 163, and another part of the top cover 180 is provided with a protrusion 181, which is located inside the rivet 130 and extends in the direction of the pole 120, and is connected to the first end of the pole 120, and the second end of the pole 120 is electrically connected to the battery cell through the collector plate 190.

[0047] The first end of the pole 120 and the protrusion 181 on the top cover 180 are connected together by penetration welding, so as to achieve connection fixation and current diversion. The pole 120 in the embodiment of the present application is shorter and is integrally formed with the collector plate 190.

[0048] Exemplarily, the pole 120 is configured as a hollow structure, and the collecting plate 190 and the pole 120 can be formed by stamping and stretching, which can further reduce the manufacturing cost.

[0049] Embodiment 3

[0050] An embodiment of the present application provides a battery and an electrical device, wherein the battery is provided with the above-mentioned battery cover assembly, and the electrical device includes the above-mentioned battery.

[0051] The battery and electrical equipment in the present application adopt the above-mentioned battery cover assembly, and the integrated pole is designed to be split into a pole and a riveted structure. The pole and the riveted part are arranged on the through hole of the cover, and the current is guided through the pole, and the connection with the sealing assembly is achieved through the riveted part for sealing; because the riveted part is used for assembly and connection but not for guiding current, copper material is not required for preparation, and the size of the pole itself can be designed to be smaller, thereby reducing the copper material to reduce the overall preparation cost. The present application has the effect of reducing the preparation cost of the battery cover assembly. In addition, the collector plate is provided with an elastic plate and a support plate, which can play an effective buffering effect and can avoid the problem of ear tearing failure caused by the displacement of the battery cell when the battery falls.

[0052] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0053] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0054] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various inventive aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0055] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0056] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0057] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. The present application may be implemented with the aid of hardware including several different elements and with the aid of appropriately programmed computers. In a unit claim listing several on-board systems, several of these on-board systems may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0058] The above is only a specific implementation method or description of a specific implementation method of the present application, and the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A battery cover assembly, applied to a battery, characterized in that: It includes poles, rivets, sealing components and cover plates, wherein: The pole is electrically connected to the battery cell of the battery; The rivet is arranged around the pole and abuts against the sealing assembly to fix the sealing assembly; The sealing assembly is arranged on the cover plate and surrounds the riveted member; The cover plate is arranged at the end of the outer shell of the battery, a through hole is arranged on the cover plate, and the sealing component abuts against the inner wall of the through hole; The sealing assembly includes a first sealing ring and a second sealing ring. The first sealing ring includes a first sealing portion and a first annular portion. The second sealing ring includes a second sealing portion and a second annular portion. The first sealing portion and the second sealing portion are located in the through hole and abut against the rivet.

2. The battery cover assembly according to claim 1, characterized in that: A groove is provided on the cover plate, the groove is located at the top of the through hole and is connected to the through hole, and the groove is arranged around the through hole; the first annular portion is located in the groove, and a first bending portion is provided at the bottom of the rivet, and the first bending portion is against the second annular portion.

3. The battery cover assembly according to claim 1, characterized in that: It also includes a limiting ring, which is arranged on the cover plate and fixed by the rivet to limit the sealing assembly.

4. The battery cover assembly according to claim 3, characterized in that: The limiting ring is arranged around the rivet, and the first surface of the limiting ring is sequentially provided with a first table surface, a second table surface and a third table surface, the second surface of the limiting ring includes a first area and a second area, the second area surrounds the first area, and the first area of ​​the second surface of the limiting ring is against the sealing assembly; the rivet is provided with a second bending portion, and the second bending portion is against the first table surface.

5. The battery cover assembly according to claim 4, characterized in that: It also includes an insulating ring, which includes an insulating portion and an extending portion. The insulating portion is sleeved outside the limiting ring, and the second area of ​​the second surface of the limiting ring is against the extending portion.

6. The battery cover assembly according to claim 4, characterized in that: It also includes a top cover, which is connected to the limiting ring, a portion of the bottom of the top cover is against the third table surface, and the top cover is connected to the first end of the pole.

7. The battery cover assembly according to claim 4, characterized in that: It also includes a top cover, which is connected to the limiting ring, a portion of the top cover is against the third table surface, and another portion of the top cover is provided with a protrusion, the protrusion is located on the inner side of the rivet and connected to the first end of the pole, and the second end of the pole is electrically connected to the battery cell of the battery.

8. The battery cover assembly according to claim 4, characterized in that: The pole is electrically connected to the battery cell through a current collecting disk, the current collecting disk comprises a connecting portion and an elastic portion arranged on the connecting portion, the connecting portion is electrically connected to the battery cell, and the second end of the pole is arranged on the elastic portion.

9. The battery cover assembly according to claim 8, characterized in that: The elastic part includes an elastic plate and a support plate. The second end of the pole is arranged on the support plate. One end of the elastic plate is arranged on the support plate, and the other end is connected to the connection part.

10. The battery cover assembly according to claim 8 or 9, characterized in that: The second end of the pole is welded to or integrally formed with the elastic portion.

11. A battery, characterized in that: The battery is provided with a battery cover assembly as described in any one of claims 1-10.

12. An electrical equipment, characterized in that: The electrical device comprises the battery according to claim 11.

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