CN216980716U - Battery top cap structure and battery - Google Patents

Abstract

The utility model relates to an end cover and provides a battery top cover structure and a battery. The battery top cover structure comprises an end cover body and a pole inserted on the end cover body, wherein a sealing element is arranged between the end cover body and the pole, the end cover body comprises an end cover lower plate and a substrate arranged on the end cover lower plate, the pole comprises a pole fixing seat and a pole insertion end arranged on the pole fixing seat, a fixing seat bulge elastically abutted to the lower surface of the end cover lower plate is arranged on the pole fixing seat, and/or a lower plate lower bulge elastically abutted to the upper surface of the pole fixing seat is arranged on the end cover lower plate. The battery is provided with the battery top cover structure. The battery top cover structure provided by the utility model can ensure the sealing performance between the pole and the end cover lower plate, and prevent the battery from being influenced by the self-short circuit.

Description

Battery top cap structure and battery

Technical Field

The utility model relates to an end cover, in particular to a battery top cover structure. The utility model also relates to a battery comprising the battery top cover structure.

Background

With the development of modern society and the enhancement of environmental awareness of people, more and more devices select rechargeable secondary batteries as power sources, such as mobile phones, notebook computers, electric tools, electric vehicles, energy storage power stations and the like, so that a wide space is provided for the application and development of the rechargeable secondary batteries. Among them, electric vehicles, energy storage power stations, and the like generally require the use of power batteries having a large capacity.

The lithium battery top cap is as an important accessory in the lithium ion battery, and it can enough make the interior external environment isolated play sealed effect through welding back with the aluminum hull, also can connect interior outer circuit, passes through top cap utmost point post to the battery internal current and carries the outside, plays the water conservancy diversion effect.

The lithium ion battery top cover of the prior art mostly adopts the fluororubber sealing ring to seal, is provided with the plate under the end cover between utmost point post and the top cap spare, and the material of plate is polypropylene under the end cover, and the plate passes through the extrusion of utmost point post and top cap spare under the end cover and fixes, but can not reach sealed effect. Electrolyte can enter the edge part of the pole hole of the lower plastic part from the gap between the plate and the pole under the end cover. The end cover lower plate and the sealing ring in the prior art can play a certain sealing role through interference fit. However, the lower plate of the end cover is not sufficiently constrained, so that the lower plate is easy to locally expand and deform, a gap is formed at the matching position of the sealing ring and the lower plate of the end cover, and the sealing performance is reduced. Electrolyte can enter the gap, so that the battery also has self-discharge, and the performance of the battery is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a battery top cover structure, which can ensure the sealing performance between a terminal and a lower plate of an end cover, and prevent the battery from being affected by a self-short circuit.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a battery top cap structure, includes the end cover body and inserts and establish utmost point post on the end cover body, the end cover body with be provided with the sealing member between the utmost point post, the end cover body includes plate under the end cover and sets up base plate under the end cover on the plate, utmost point post includes utmost point post fixing base and sets up utmost point post on the utmost point post fixing base inserts the end, be provided with on the utmost point post fixing base with the fixing base of lower surface elasticity butt of component is protruding under the end cover, and/or be provided with under the end cover on the plate with protruding under the lower component of utmost point post fixing base upper surface elasticity butt.

Furthermore, the pole fixing seat is provided with the fixing seat protrusion, the lower plate of the end cover is provided with a lower plate lower groove matched with the fixing seat protrusion, and the fixing seat protrusion is elastically abutted to the bottom wall of the lower plate lower groove; and/or the end cover lower plate is provided with the lower plate lower protrusion, the pole fixing seat is provided with a fixing seat groove matched with the lower plate lower protrusion, and the lower plate lower protrusion is elastically abutted to the bottom wall of the fixing seat groove.

Furthermore, the base plate is provided with a base plate bulge which is elastically abutted to the upper surface of the lower plate of the end cover, and/or the lower plate of the end cover is provided with a lower plate upper bulge which is elastically abutted to the lower surface of the base plate.

Further, the substrate is provided with the substrate bulge, the lower plate of the end cover is provided with a lower plate upper groove matched with the substrate bulge, and the substrate bulge is elastically abutted against the bottom wall of the lower plate upper groove; and/or the lower plate of the end cover is provided with the upper bulge of the lower plate, the substrate is provided with a substrate groove matched with the upper bulge of the lower plate, and the upper bulge of the lower plate is elastically abutted against the bottom wall of the substrate groove.

Further, the plate under the end cover comprises a first plate under the end cover and a second plate under the end cover which are separately arranged, and a substrate bulge and/or a lower plate upper bulge are arranged between the first plate under the end cover and the substrate and between the second plate under the end cover and the substrate.

Furthermore, be provided with on the plate under the end cover and be suitable for the joint the fixing base mounting groove of utmost point post fixing base.

Further, the pole post riveting device further comprises a riveting piece used for fixing the pole post, wherein the riveting piece comprises a positive pole riveting piece and a negative pole riveting piece, the positive pole riveting piece is in conductive connection with the substrate, and the negative pole riveting piece is in insulating connection with the substrate.

Further, an insulator is arranged between the negative electrode riveting piece and the substrate.

Furthermore, a riveting piece mounting groove is formed in the insulator, and one end of the negative riveting piece is clamped in the riveting piece mounting groove; the substrate is provided with an insulator mounting groove, and one end of the insulator is clamped in the insulator mounting groove.

Compared with the prior art, the battery top cover structure has the following advantages:

according to the battery top cover structure, the pole fixing seat is provided with the fixing seat bulge which is elastically abutted with the lower surface of the pole fixing seat under the end cover, and/or the lower plate of the end cover is provided with the lower plate lower bulge which is elastically abutted with the upper surface of the pole fixing seat under the end cover, and a sealing line is formed between the pole fixing seat and the lower plate of the end cover through the elastic abutting of the fixing seat bulge and the lower surface of the plate under the end cover and/or the elastic abutting of the lower plate lower bulge and the upper surface of the pole fixing seat under the end cover, so that the sealing between the upper surface of the pole fixing seat and the plate under the end cover is realized, the electric conduction between the substrate and the pole caused by the fact that electrolyte penetrates through a gap between the upper surface of the pole fixing seat and the lower surface of the plate under the end cover and enters a gap between the sealing element and the pole is prevented, the self-discharge of the battery is prevented, and the performance of the battery is ensured.

Another object of the present invention is to provide a battery, which can ensure the sealing performance between the terminal post and the lower plate of the end cap, and prevent the battery from being affected by the self-short circuit.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a battery is provided with the battery top cover structure.

The advantages of the battery and the battery top cover structure are the same compared with the prior art, and the description is omitted.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a partial structural schematic view of a battery top cover structure according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a portion of the structure of FIG. 1;

fig. 3 is a partial structural schematic view of a battery top cover structure according to a second embodiment of the present invention;

fig. 4 is a partial structural schematic view of a battery top cover structure according to a third embodiment of the present invention;

fig. 5 is a partial structural schematic view of a battery top cover structure according to a fourth embodiment of the present invention;

fig. 6 is a partial structural schematic view of a battery top cover structure according to a fifth embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of the structure of FIG. 6;

FIG. 8 is a schematic view of a portion of the structure of a lower plate member of an end cap in accordance with an embodiment of the present invention;

fig. 9 is an exploded view of a battery top cover structure according to an embodiment of the present invention.

Description of reference numerals:

1 end cap body 2 pole

3 sealing element 4 riveting piece

5 insulator 6 riveting piece mounting groove

7 insulator mounting groove

11 base plate 12 end cover lower plate

21 utmost point post fixing base 22 utmost point post inserts end

111 substrate projection 112 substrate recess

121 lower plate lower protrusion 122 lower plate lower groove

123 lower plate upper bulge 124 fixing seat mounting groove

12a first end cap lower plate 12b second end cap lower plate

Detailed Description

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

In addition, the terms "top", "bottom", and the like referred to in the embodiments of the present invention indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. In the battery, the position of the top cover structure of the battery is the top of the battery, and the opposite position is the bottom of the battery. The terminology is based on the orientations and positional relationships illustrated in the drawings and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the utility model.

It is to be understood that, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "contacting" are intended to be open-ended, i.e., connected as either a fixed or removable connection or an integral connection; the components may be directly connected or indirectly connected through an intermediate medium, or the components may be connected through an intermediate medium or the components may be in an interactive relationship with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A battery top cover structure provided by a basic embodiment of the present invention, as shown in fig. 1-7, includes an end cover body 1 and a post 2 inserted on the end cover body 1, a sealing member 3 is disposed between the end cover body 1 and the post 2, the end cover body 1 includes an end cover lower plate 12 and a substrate 11 disposed on the end cover lower plate 12, the post 2 includes a post fixing seat 21 and a post insertion end 22 disposed on the post fixing seat 21, a fixing seat protrusion 211 elastically abutted to a lower surface of the end cover lower plate 12 is disposed on the post fixing seat 21, and/or a lower plate lower protrusion 121 elastically abutted to an upper surface of the post fixing seat 21 is disposed on the end cover lower plate 12.

According to the present invention, the pole 2 may be a pole structure with a pole holder 21 as disclosed in the prior art, and the substrate may be a metal plate, which may be a high-strength alloy plate, a steel plate, an aluminum plate, or another metal plate, preferably a smooth aluminum plate.

The end cover body 1 is provided with an electrode mounting hole suitable for inserting the pole 2. The pole fixing seat 21 and the pole insertion end 22 on the pole 2 can be integrally formed or separately formed and then connected in a welding mode. The seal 3 may be a gasket, a seal or other sealing structure as disclosed in the prior art.

The elastic abutment between the end cover lower plate 12 and the fixing seat protrusion 211 can be provided with elasticity through the end cover lower plate 12 and also can be provided with elasticity through the fixing seat protrusion 211. The elastic contact between the pole fixing seat 21 and the lower plate lower protrusion 121 may be that the pole fixing seat 21 has elasticity, or the lower plate lower protrusion 121 has elasticity. In an embodiment of the present invention, the end cover lower plate 12 is a molded part of an elastic insulating material, and the lower plate lower protrusion 121 disposed on the end cover lower plate 12 also has elasticity, and the elastic insulating material may be any one of the insulating materials with elasticity disclosed in the prior art, such as common lower plastic.

Specifically, the fixing seat protrusion 211 and the lower plate member lower protrusion 121 are annular, the fixing seat protrusion 211 is circumferentially arranged on the periphery of the terminal post insertion end 22, and the lower plate member lower protrusion 121 is circumferentially arranged on the periphery of the electrode mounting hole, so that the sealing performance between the terminal post fixing seat 21 and the end cover lower plate member 12 is ensured.

The protruding 121 can set up simultaneously under fixing base 211 and the lower panel, also can set up alone, preferably sets up alone, can improve under fixing base 211 and the end cover between the lower surface of panel 12 or under the panel under the protruding 121 and the utmost point post fixing base 21 upper surface between the butt effect. Thereby ensuring the sealing performance between the two.

More specifically, protruding 121 top under the protruding 211 top of fixing base and lower panel can set up to cambered surface or plane, preferably, in order to improve sealed effect, protruding 121 top under the protruding 211 top of fixing base and lower panel sets up to the cambered surface, the setting of cambered surface makes things convenient for under the end cover extrusion of plate 12 to the protruding 211 top of fixing base, and utmost point post fixing base 21 is to the extrusion of protruding 121 top under the lower panel, thereby improve the sealed effect between plate 12 and utmost point post fixing base 21 under the end cover. The degree of curvature of the camber can be determined by one skilled in the art based on the actual circumstances.

In the above description, the "bottom" of the fixing boss 211 refers to the end of the fixing boss 211 connected to the pole fixing base 21, and the "top" refers to the opposite end; the lower plate lower protrusion 121 "bottom" refers to the end of the lower plate lower protrusion 121 connected to the end cap lower plate 12, and "top" refers to the opposite end.

When the battery top cover structure provided by the above basic embodiment is installed, the substrate 11 is stacked on the plate 12 under the end cover, the end cover body 1 is formed, the two poles 2 are provided, the sealing element 3 is sleeved on the two poles 2 and is respectively inserted into the two electrode mounting holes of the end cover body 1, the elastic abutment of the upper surface of the pole fixing seat 21 of the two poles 2 and the bottom surface of the plate 12 under the end cover is realized through the protrusion 211 of the fixing seat and/or the protrusion 121 under the plate, and the sealing element 3 is clamped between the end cover body 1 and the pole insertion end 22.

The above-mentioned basic embodiment provides a battery top cover structure, the post fixing seat 21 is provided with a fixing seat protrusion 211 elastically abutting against the lower surface of the end cover lower plate 12, and/or the end cover lower plate 12 is provided with a lower plate lower protrusion 121 elastically abutting against the upper surface of the post fixing seat 21, by elastic abutment of the fixing seat protrusion 211 and the lower surface of the end cover lower plate 12, and/or elastic abutment of the lower plate lower protrusion 121 and the upper surface of the post fixing seat 21, a gap between the post fixing seat 21 and the end cover lower plate 12 is prevented, sealing between the upper surface of the post fixing seat 21 and the lower surface of the end cover lower plate 12 is ensured, electrical conduction between the substrate 11 and the post 2 caused by electrolyte penetrating through the gap between the upper surface of the post fixing seat 21 and the lower surface of the end cover lower plate 12 into the gap between the sealing member 3 and the post 2 is prevented, the self-discharge of the battery is prevented, and the performance of the battery is ensured.

In order to further facilitate the installation and fixation between the end cover lower plate 12 and the pole fixing seat 21, referring to fig. 3-5, in an embodiment of the present invention, a fixing seat protrusion 211 is disposed on the pole fixing seat 21, a lower plate lower groove 122 matched with the fixing seat protrusion 211 is disposed on the end cover lower plate 12, and the fixing seat protrusion 211 elastically abuts against a bottom wall of the lower plate lower groove 122; and/or be provided with lower protruding 121 under the lower plate of plate 12 under the end cover, be provided with on the utmost point post fixing base 21 with lower protruding 121 matched's under the plate fixing base recess 212, lower protruding 121 and the diapire elasticity butt of fixing base recess 212 under the plate.

Through the arrangement, in the installation process, the fixing seat protrusion 211 is clamped in the lower plate lower groove 122, and/or the lower plate lower protrusion 121 is clamped in the fixing seat groove 212, so that the positioning effect can be achieved, and the installation and the positioning of the pole 2 and the end cover lower plate 12 are facilitated. Moreover, by elastically abutting the holder projection 211 against the bottom wall of the lower plate lower recess 122 and/or elastically abutting the lower plate lower projection 121 against the bottom wall of the holder recess 212, the sealability between the pole holder 21 and the end cap lower plate 12 can be ensured.

In one embodiment of the present invention, referring to fig. 5-7, the substrate 11 is provided with a substrate protrusion 111 elastically abutting against the upper surface of the end cover lower plate 12, and/or the end cover lower plate 12 is provided with a lower plate upper protrusion 123 elastically abutting against the lower surface of the substrate 11.

Specifically, the substrate protrusion 111 and the lower plate upper protrusion 123 are both provided in a ring shape and are provided around the periphery of the electrode mounting hole in the circumferential direction to ensure sealability between the substrate 11 and the end cap lower plate 12. The substrate protrusions 111 and the lower plate upper protrusions 123 may be provided simultaneously, or may be provided separately, preferably, individually, and the abutting effect between the substrate protrusions 111 and the upper surface of the end cover lower plate 12 or between the lower plate upper protrusions 123 and the lower surface of the substrate 11 can be improved. Thereby ensuring the sealing performance between the two.

More specifically, the top of the substrate protrusion 111 and the top of the lower plate upper protrusion 123 may be configured as an arc surface or a plane, preferably, in order to improve the sealing effect, the top of the substrate protrusion 111 and the top of the lower plate upper protrusion 123 are configured as arc surfaces, and the arrangement of the arc surfaces facilitates the extrusion of the end cover lower plate 12 on the top of the substrate protrusion 111 and the extrusion of the substrate 11 on the top of the lower plate upper protrusion 123, so as to improve the sealing effect between the substrate 11 and the end cover lower plate 12. The degree of curvature of the camber can be determined by one skilled in the art based on the actual circumstances.

In the above description, the "bottom" of the substrate projection 111 means the end where the substrate projection 111 and the substrate 11 are connected, and the "top" means the opposite end; the lower plate upper protrusion 123 "bottom" refers to the end of the lower plate upper protrusion 123 that is connected to the end cap lower plate 12, and "top" refers to the opposite end.

The end cover lower plate 12 is made of elastic materials, elastic abutting between the end cover lower plate 12 and the base plate protrusion 111 and/or between the base plate 11 and the lower plate upper protrusion 123 can be achieved through the arrangement of the base plate protrusion 111 abutting against the upper surface of the end cover lower plate 12 and/or the lower plate upper protrusion 123 abutting against the lower surface of the base plate 11, a gap between the base plate 11 and the end cover lower plate 12 is prevented, and sealing performance between the lower surface of the base plate 11 and the upper surface of the end cover lower plate 12 is guaranteed.

In order to further facilitate the installation and fixation between the end cover lower plate 12 and the base plate 11, in an embodiment of the present invention, referring to fig. 5, a base plate protrusion 111 is disposed on the base plate 11, a lower plate upper groove matched with the base plate protrusion 111 is disposed on the end cover lower plate 12, and the base plate protrusion 111 elastically abuts against a bottom wall of the lower plate upper groove; and/or the end cover lower plate 12 is provided with a lower plate upper protrusion 123, the substrate 11 is provided with a substrate groove 112 matched with the lower plate upper protrusion 123, and the lower plate upper protrusion 123 is elastically abutted with the bottom wall of the substrate groove 112.

Through the arrangement, in the installation process, the substrate protrusion 111 is clamped in the lower plate upper groove, and/or the lower plate upper protrusion 123 is clamped in the substrate groove 112, so that the positioning effect can be achieved, and the substrate 11 and the end cover lower plate 12 can be conveniently installed and positioned. Further, by elastically abutting the substrate projection 111 against the bottom wall of the lower plate lower groove 122, and/or elastically abutting the lower plate lower projection 121 against the bottom wall of the substrate groove 112, the sealability between the substrate 11 and the end cover lower plate 12 can be ensured.

In one embodiment of the present invention, referring to fig. 9, the end cover lower plate 12 includes a first end cover lower plate 12a and a second end cover lower plate 12b which are separately provided, and a substrate protrusion 111 and/or a lower plate upper protrusion 123 is provided between the first end cover lower plate 12a and the substrate 11, and between the second end cover lower plate 12 and the substrate 11.

Specifically, plate 12a under the first end cap and plate 12b under the second end cap all are provided with down post mounting hole, are provided with base plate utmost point post mounting hole on the base plate 11, and base plate utmost point post mounting hole corresponds the setting with lower post mounting hole and forms utmost point post mounting hole and is used for cartridge utmost point post 2.

More specifically, a substrate projection 111 and/or a lower-plate-upper projection 123 is provided between the first end-cap lower plate 12a and the substrate 11, and a substrate projection 111 and/or a lower-plate-upper projection 123 is also provided between the second end-cap lower plate 12 and the substrate 11.

According to the battery top cover structure provided by the embodiment, in the positioning and assembling process, the gap between the first end cover lower plate 12a and the second end cover lower plate 12b can be adjusted, so that the end cover pole mounting holes between the first end cover lower plate 12a and the substrate 11 and between the second end cover lower plate 12b and the substrate 11 correspond to the lower plate pole mounting holes, the manufacturing precision requirements of the end cover lower plate 12 and the substrate 11 can be reduced, and the mounting precision of the end cover lower plate 12 and the substrate 11 can be ensured.

In an embodiment of the present invention, the end cover lower plate 12 is provided with a holder mounting groove 124 adapted to clamp the pole holder 21. In the installation, utmost point post fixing base 21 is suitable for the card to establish in fixing base mounting groove 124, can further fix utmost point post 2 and plate 12 under the end cover to prevent to produce down under the end cover between plate 12 and the utmost point post fixing base 21 and follow utmost point post installation aperture ascending removal in the radial direction, guarantee under the end cover plate 12 and utmost point post insert the sealing performance between the end 22.

In an embodiment of the present invention, referring to fig. 9, the terminal further includes a rivet 4 for fixing the terminal 2, and the rivet 4 includes a positive rivet and a negative rivet, where the positive rivet is electrically connected to the substrate 11, and the negative rivet is electrically connected to the substrate 11. The rivet 4 may be a rivet conventionally used in the prior art, which can further fix the post 2 and also can realize a large current passing.

The negative rivet and the substrate 11 may be connected in an insulated manner in any manner that may be implemented, and in one embodiment of the present invention, referring to fig. 9, an insulator 5 is disposed between the negative rivet and the substrate 11. The insulator 5 may be an insulating pad, an insulating sheet, or the like. The insulating connection between the negative rivet and the base plate 11 is achieved by the provision of the insulator 5.

In one embodiment of the present invention, referring to fig. 9, a rivet mounting groove 6 is provided on the insulator 5, and one end of the negative rivet is clamped in the rivet mounting groove 6; the base plate 11 is provided with an insulator mounting groove 7, and one end of the insulator 5 is clamped in the insulator mounting groove 7. One end of the negative electrode riveting piece is clamped in the riveting piece mounting groove 6, one end of the insulator 5 is clamped in the insulator mounting groove 7, the negative electrode riveting piece and the insulator 5 and the substrate 11 can be prevented from moving in the radial direction of the pole mounting hole, a good positioning effect is achieved, and meanwhile, the sealing performance between the negative electrode riveting piece and the insulator 5 and between the insulator 5 and the substrate 11 can be guaranteed.

In order to achieve a better sealing effect, in one embodiment of the utility model, the pole 2 and the rivet are sealed by an aluminum part.

Of course, the end cover body 1 is also provided with other structures, such as an explosion-proof valve, a liquid injection hole and the like.

As a relatively preferred embodiment of the present invention, a battery top cover structure is provided, referring to fig. 3-5, 8 and 9, including an end cover body 1 and a post 2 inserted on the end cover body 1, the end cover body 1 is provided with a post insertion hole, a sealing member 3 is arranged between the end cover body 1 and the post 2, the end cover body 1 includes an end cover lower plate 12 and a base plate 11 arranged on the end cover lower plate 12, the end cover lower plate 12 is a molded piece of elastic material; the pole 2 comprises a pole fixing seat 21 and a pole insertion end 22 arranged on the pole fixing seat 21; an annular fixing seat protrusion 211 is arranged on the pole fixing seat 21, the fixing seat protrusion 211 is circumferentially arranged on the periphery of the pole insertion hole, a lower plate piece lower groove 122 matched with the fixing seat protrusion 211 is arranged on the end cover lower plate piece 12, and the fixing seat protrusion 211 is abutted to the bottom wall of the lower plate piece lower groove 122; and/or the end cover lower plate 12 is provided with an annular lower plate lower protrusion 121, the lower plate lower protrusion 121 is circumferentially arranged on the periphery of the pole insertion end 22, the pole fixing seat 21 is provided with a fixing seat groove 212 matched with the lower plate lower protrusion 121, and the lower plate lower protrusion 121 is abutted to the bottom wall of the fixing seat groove 212; an annular substrate bulge 111 is arranged on the substrate 11, the substrate bulge 111 is wound on the periphery of the pole insertion hole, a lower plate upper groove matched with the substrate bulge 111 is arranged on the end cover lower plate 12, and the substrate bulge 111 is abutted to the bottom wall of the lower plate upper groove; and/or the end cover lower plate 12 is provided with an annular lower plate upper protrusion 123, the lower plate upper protrusion 123 is wound on the periphery of the pole insertion hole, the substrate 11 is provided with a substrate groove 112 matched with the lower plate upper protrusion 123, and the lower plate upper protrusion 123 is abutted with the bottom wall of the substrate groove 112; the end cover lower plate 12 is provided with a fixing seat mounting groove 124 suitable for clamping the pole fixing seat 21; the riveting piece is characterized by further comprising a riveting piece 4 used for fixing the pole 2, wherein the riveting piece 4 comprises an anode riveting piece and a cathode riveting piece, the anode riveting piece is in conductive connection with the substrate 11, the cathode riveting piece is in insulation connection with the substrate 11, an insulator 5 is arranged between the cathode riveting piece and the substrate 11, a riveting piece mounting groove 6 is formed in the insulator 5, one end of the cathode riveting piece is clamped in the riveting piece mounting groove 6, an insulator mounting groove 7 is formed in the substrate 11, and one end of the insulator 5 is clamped in the insulator mounting groove 7.

When the battery top cover structure provided by the preferred embodiment is installed, the first end cover lower plate 12a and the second end cover lower plate 12b are arranged below the substrate 11 to form the end cover body 1, two poles 2 are arranged, the two poles 2 are both sleeved with the sealing element 3 and are respectively inserted into the two electrode mounting holes of the end cover body 1, the upper surfaces of the pole fixing seats 21 of the two poles 2 and the bottom surface of the end cover lower plate 12 are abutted through the fixing seat protrusions 211 and/or the lower plate lower protrusions 121, the upper surfaces of the end cover lower plate 12 and the lower surface of the substrate 11 are abutted up to now through the lower plate upper protrusions 123 and/or the substrate protrusions 111, and the sealing element 3 is clamped between the end cover body 1 and the pole insertion end 22; the insulator 5 is clamped in the insulator mounting groove 7, the cathode pole column penetrates through the insulator 5, then the pole column 2 is fixed through the riveting piece 4, and the aluminum part is sealed.

The preferred embodiment provides and battery top cap structure, set up plate 12 under the end cover as the elastic material formed part, and be provided with the protruding 211 of fixing base with plate 12 lower surface butt under the end cover at utmost point post fixing base 21, and/or be provided with protruding 121 under the lower plate with utmost point post fixing base 21 upper surface butt under the end cover on plate 12 under the end cover, through the elastic butt of the protruding 211 of fixing base and plate 12 lower surface under the end cover, and/or protruding 121 and the elastic butt of utmost point post fixing base 21 upper surface under the lower plate, prevent to appear the gap between utmost point post fixing base 21 and plate 12 under the end cover, guarantee the leakproofness between utmost point post fixing base 21 upper surface and plate 12 lower surface under the end cover. The base plate 11 is provided with a base plate protrusion 111 abutted against the upper surface of the end cover lower plate 12, and/or the end cover lower plate 12 is provided with a lower plate upper protrusion 123 abutted against the lower surface of the base plate 11, and through elastic abutting between the base plate protrusion 111 and the upper surface of the end cover lower plate 12 and/or between the lower plate upper protrusion 123 and the lower surface of the base plate 11, a gap between the base plate 11 and the end cover lower plate 12 is prevented, and the sealing performance between the lower surface of the base plate 11 and the upper surface of the end cover lower plate 12 is ensured. Prevent because the electric conduction between base plate 11 and the utmost point post 2 that the clearance between base plate 11 lower surface and the upper surface of plate 12 gets into the clearance between sealing member 3 and the utmost point post 2 under the base plate 11 lower surface and the end cover under the gap between the plate 12 lower surface and the end cover and arouse, prevent the production of battery self discharge, guarantee the performance of battery.

In one embodiment of the battery of the present invention, the battery includes the above-described battery top cap structure.

Specifically, still include battery casing and electric core utmost point group, battery top cap structure and battery casing welding, electric core utmost point group arranges in the space that battery casing and electric core utmost point group formed, and utmost point post and electric conduction of electric core utmost point group.

The battery has all the advantages of the battery top cover structure, and the description is omitted.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides a battery top cap structure, its characterized in that includes end cover body (1) and inserts and establish utmost point post (2) on end cover body (1), end cover body (1) with be provided with sealing member (3) between utmost point post (2), end cover body (1) includes under the end cover plate (12) and sets up base plate (11) under the end cover on plate (12), utmost point post (2) include utmost point post fixing base (21) and set up utmost point post on utmost point post fixing base (21) insert end (22), be provided with on utmost point post fixing base (21) with fixing base arch (211) of plate (12) lower surface elasticity butt under the end cover, and/or be provided with under the end cover on plate (12) with protruding (121) under the lower plate of utmost point post fixing base (21) upper surface elasticity butt.

2. The battery top cover structure according to claim 1, wherein the pole fixing seat (21) is provided with the fixing seat protrusion (211), the end cover lower plate (12) is provided with a lower plate lower groove (122) matched with the fixing seat protrusion (211), and the fixing seat protrusion (211) is elastically abutted against the bottom wall of the lower plate lower groove (122); and/or

The lower plate (12) of the end cover is provided with a lower plate lower protrusion (121), the pole fixing seat (21) is provided with a fixing seat groove (212) matched with the lower plate lower protrusion (121), and the lower plate lower protrusion (121) is elastically abutted to the bottom wall of the fixing seat groove (212).

3. The battery top cover structure according to claim 1 or 2, characterized in that the base plate (11) is provided with a base plate protrusion (111) elastically abutting against the upper surface of the end cover lower plate (12), and/or

And the lower plate (12) of the end cover is provided with a lower plate upper protrusion (123) which is elastically abutted with the lower surface of the base plate (11).

4. The battery top cover structure according to claim 3, wherein the base plate (11) is provided with the base plate bulge (111), the end cover lower plate (12) is provided with a lower plate upper groove matched with the base plate bulge (111), and the base plate bulge (111) is elastically abutted with the bottom wall of the lower plate upper groove; and/or

The end cover lower plate (12) is provided with the lower plate upper protrusion (123), the substrate (11) is provided with a substrate groove (112) matched with the lower plate upper protrusion (123), and the lower plate upper protrusion (123) is elastically abutted to the bottom wall of the substrate groove (112).

5. The battery top cover structure according to claim 3, wherein the end cover lower plate (12) comprises a first end cover lower plate (12a) and a second end cover lower plate (12b) which are separately arranged, and the substrate protrusions (111) and/or the lower plate upper protrusions (123) are arranged between the first end cover lower plate (12a) and the substrate (11), and between the second end cover lower plate (12b) and the substrate (11).

6. The battery top cover structure according to claim 1 or 2, characterized in that a fixing seat mounting groove (124) suitable for clamping the pole fixing seat (21) is arranged on the end cover lower plate (12).

7. The battery top cover structure according to claim 1 or 2, further comprising a riveting member (4) for fixing the pole (2), wherein the riveting member (4) comprises a positive riveting member and a negative riveting member, the positive riveting member is electrically connected with the substrate (11), and the negative riveting member is electrically connected with the substrate (11).

8. The battery top cover structure according to claim 7, wherein an insulator (5) is provided between the negative rivet and the base plate (11).

9. The battery top cover structure according to claim 8, wherein a rivet mounting groove (6) is formed in the insulator (5), and one end of the negative rivet is engaged in the rivet mounting groove (6);

an insulator mounting groove (7) is formed in the substrate (11), and one end of the insulator (5) is clamped in the insulator mounting groove (7).

10. A battery characterized in that a battery top cover structure according to any one of claims 1 to 9 is provided.

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