CN218123574U

CN218123574U - Battery end cover assembly, battery pack and electric equipment

Info

Publication number: CN218123574U
Application number: CN202221944952.5U
Authority: CN
Inventors: 胡岳霖
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-23
Anticipated expiration: 2032-07-26

Abstract

The application discloses battery end cover subassembly, battery package and consumer relates to battery packaging technical field. The battery end cap assembly includes: the cover plate, the sealing element and the fixing element; the cover plate is provided with a through hole; the sealing element comprises a connecting part and a sealing part, the connecting part is fixedly connected with the sealing part, the connecting part is limited on one side of the cover plate, and at least part of the sealing part is positioned in the through hole; and the fixing piece is connected with the connecting part and detachably connected with the cover plate so as to enable the sealing piece to seal the through hole. In this application embodiment, after the at least part of sealing part stretches into the through-hole, can realize the fixed connection of connecting portion and apron through the mounting, the dismantlement of the follow-up sealing member of being convenient for simultaneously, and when mounting and apron fixed connection, can realize that the sealing member is sealed to the through-hole.

Description

Battery end cover assembly, battery pack and electric equipment

Technical Field

The application relates to the technical field of battery packaging, in particular to a battery end cover assembly, a battery pack and electric equipment.

Background

The liquid filling port is formed in a general battery cover plate, the processing equipment fills electrolyte into the battery through the liquid filling port, a sealing piece is arranged on the liquid filling port after liquid filling operation is completed, the liquid filling port is sealed through laser welding, and the problem of liquid leakage cannot occur in the use process of the battery.

However, after the battery is used for a period of time, the internal electrolyte of the battery can drop below a standard level, and the battery can be ensured to continue working by replenishing the electrolyte, otherwise, the battery can only be discarded; in addition, the problem that the liquid injection amount does not reach the standard can occur in the machining process, rework is also needed to be performed, the liquid injection port is sealed by using a laser welding process in the prior art, the sealing element cannot be detached, or the cover plate is damaged after the sealing element is detached.

SUMMERY OF THE UTILITY MODEL

One of the main objects of the present application is to provide a battery end cap assembly, a battery pack and an electric device, which can facilitate the secondary liquid injection of the battery.

In order to achieve the purpose of the application, the following technical scheme is adopted in the application:

according to one aspect of the present application, there is provided a battery end cap assembly comprising:

a cover plate having a through hole;

the sealing element comprises a connecting part and a sealing part, the connecting part is fixedly connected with the sealing part, the connecting part is limited on one side of the cover plate, and at least part of the sealing part is positioned in the through hole;

and the fixing piece is connected with the connecting part and detachably connected with the cover plate, so that the sealing piece seals the through hole.

In this application embodiment, after the through-hole is stretched into to at least part of sealing, can realize the fixed connection of connecting portion and apron through the mounting, the dismantlement of the follow-up sealing member of being convenient for simultaneously, and when mounting and apron fixed connection, can realize that the sealing member is sealed to the through-hole.

According to an embodiment of the present application, the cover plate has a threaded hole, the fixing member is a fixing screw, a head of the fixing screw is pressed against the connecting portion, and a threaded section of the fixing screw is in threaded connection with the threaded hole.

According to an embodiment of the application, wherein, the apron has the spacing groove, the mounting be with the integrative spacing hook of connecting portion, spacing hook detachable is spacing in the spacing inslot.

In the embodiment of the application, through threaded connection's mode, perhaps through spacing hook and spacing groove complex mode, realize connecting portion and the dismantlement of apron and be connected, the dismantlement of the follow-up connecting portion of so being convenient for.

According to an embodiment of the application, the battery end cover assembly comprises a plurality of fixing pieces, and the plurality of fixing pieces are evenly distributed in the circumferential direction.

In this application embodiment, through the injeciton of a plurality of mountings to a plurality of mountings are along circumferencial direction evenly distributed, guaranteed so that connecting portion are fixed steadiness on the apron, guarantee the homogeneity of connecting portion atress simultaneously, avoid the condition of local perk.

According to an embodiment of the present application, wherein the battery end cap assembly includes a first sealing ring, the first sealing ring is sleeved on the sealing portion and clamped between the connecting portion and the cover plate.

In this application embodiment, through set up first sealing washer between connecting portion and apron to further improve the sealed effect to the through-hole when connecting portion are sealed with the apron.

According to an embodiment of the application, the part of the sealing part in the through hole is in interference fit with the hole wall of the through hole.

In this application embodiment, through the interference fit who prescribes a limit to sealing part and through-hole inner wall, further realize the sealed to the through-hole, and then improve the sealed effect to the through-hole.

According to an embodiment of the present application, wherein the sealing portion has a first step surface facing away from the connecting portion, the through hole has a second step surface facing toward the connecting portion, and the first step surface abuts against the second step surface.

In the embodiment of the application, the first step surface on the sealing part is abutted against the second step surface of the through hole, so that the contact area between the sealing part and the hole wall of the through hole is increased, and the sealing effect on the through hole is improved. In addition, when the connecting part and the cover plate are fixed, the sealing part is extruded by pressing the connecting part, so that the sealing effect of the first step surface and the second step surface is further improved.

According to an embodiment of the application, wherein, battery end cover subassembly still includes the second sealing washer, the second sealing washer cover is in on the sealing, and be located first step face with between the second step face.

In the embodiment of the application, the second sealing ring is arranged, so that the sealing effect between the first step surface and the second step surface is effectively ensured.

According to an embodiment of the present application, wherein the seal portion comprises a first seal section and a second seal section;

the first sealing section is fixedly connected with the connecting part, the second sealing section is provided with a first step surface back to the connecting part, the through hole is provided with a second step surface facing the connecting part, the first sealing section and the second sealing section are both positioned in the through hole, and the first step surface is matched with the second step surface to be limited.

In the embodiment of the application, the sealing part is arranged into the first sealing section and the second sealing section, and the first step surface on the second sealing section is matched with the second step surface of the through hole, so that the through hole is further effectively sealed.

According to an embodiment of the present application, the first seal section and the second seal section are of a unitary structure.

In this application embodiment, set up first seal section and second seal section into integral type structure to reduce the sealed process to the through-hole, improve sealed efficiency.

According to an embodiment of the present application, at least one of the first seal section and the second seal section is in interference fit with the hole wall of the through hole.

According to an embodiment of the present application, a surface of the seal portion has a first annular projecting tooth, and a hole wall of the through hole has a second annular projecting tooth, and the first annular projecting tooth abuts against a tooth surface opposite to the second annular projecting tooth.

In this application embodiment, through the setting of first annular dogtooth, second annular dogtooth, can increase the area of contact of the pore wall of sealing and through-hole to improve the sealed effect of sealing to the through-hole.

According to an embodiment of the present application, the first annular convex tooth is elastically limited on a side of the second annular convex tooth away from the connecting portion.

In this application embodiment, set up first cyclic annular convex tooth in the one side that connecting portion were kept away from to the cyclic annular convex tooth of second to through the spacing of the cyclic annular convex tooth of second to first cyclic annular convex tooth, reduce the possibility that sealing portion deviates from in the through-hole.

According to an embodiment of the application, one end of the sealing part, which is far away from the connecting part, is provided with a barb, and the barb is elastically limited on one side, which is far away from the connecting part, of the cover plate.

In this application embodiment, through the setting of barb, realize deviating from spacing of one side of connecting portion at the apron, reduce the possibility that sealing part deviates from in the through-hole.

According to an embodiment of the application, the barb has a sealing surface facing the cover plate, which sealing surface abuts a surface of the cover plate.

In the embodiment of the application, through at the above-mentioned sealed face that sets up of barb to through the butt of sealed face with apron surface, further realize the effective sealed to the through-hole under the sealing member detachable condition.

According to an embodiment of the present application, the through hole is a counter sink hole, and the connecting portion is accommodated in the counter sink hole and is limited on a step surface of the counter sink hole.

In this application embodiment, set up the through-hole on the apron into the heavy platform hole to make connecting portion can hold in the heavy platform is downthehole, so be convenient for follow-up setting of other components on the apron.

According to another aspect of the present application, there is provided a battery comprising a battery end cap assembly according to one aspect described above.

In the embodiment of the application, the sealing member realizes the disassembly of the sealing member when sealing the through hole, thereby being convenient for the liquid supplement of the follow-up battery, being convenient for the secondary use of the battery and ensuring the yield of the battery.

According to yet another aspect of the present application, there is provided a battery pack including the battery according to the above another aspect.

In the embodiment of the application, the sealing member realizes the disassembly of the sealing member when sealing the through hole, thereby facilitating the liquid supplement of the follow-up battery, facilitating the secondary use of the battery pack and ensuring the yield of the battery pack.

According to another aspect of the present application, there is provided an electric device, wherein the electric device includes the battery according to the above another aspect, or the battery pack according to yet another aspect.

In this application embodiment, the sealing member has realized dismantling of sealing member when sealing up the through-hole to the fluid infusion of the follow-up battery of being convenient for, the secondary of the battery that the consumer of being convenient for included uses.

Drawings

The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic diagram illustrating a partial top view of a battery end cap assembly according to an exemplary embodiment.

Fig. 2 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A cell end cap assembly according to fig. 1 taken along linebase:Sub>A-base:Sub>A'.

Fig. 3 isbase:Sub>A schematic cross-sectional view of another cell end cap assembly according to fig. 1 taken along linebase:Sub>A-base:Sub>A'.

FIG. 4 is a schematic diagram illustrating a seal configuration according to an exemplary embodiment.

Fig. 5 isbase:Sub>A schematic cross-sectional view of another cell end cap assembly taken along linebase:Sub>A-base:Sub>A' of fig. 1.

Fig. 6 isbase:Sub>A schematic cross-sectional view of still another cell end cap assembly taken along linebase:Sub>A-base:Sub>A' of fig. 1.

Fig. 7 isbase:Sub>A schematic cross-sectional view of still another cell end cap assembly taken along linebase:Sub>A-base:Sub>A' of fig. 1.

Fig. 8 isbase:Sub>A schematic cross-sectional view of another cell end cap assembly taken along linebase:Sub>A-base:Sub>A' of fig. 1.

Fig. 9 is a schematic cross-sectional view of a battery according to an exemplary embodiment.

Wherein the reference numerals are as follows:

100. a battery;

10. a battery end cap assembly; 20. a housing; 30. an electrical core assembly;

1. a cover plate; 2. a seal member; 3. a fixing member; 4. a first seal ring; 5. a second seal ring;

11. a through hole; 12. a threaded hole;

111. a second step surface;

21. a connecting portion; 22. a sealing part;

211. a fixing hole;

221. a first step surface; 222. a first seal section; 223. a second seal section; 224. and (6) barb.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted.

Fig. 1 illustrates a schematic structural view of a cell end cap assembly 10 according to an embodiment of the present application. As shown in fig. 1 and 2, the cell end cap assembly 10 includes: the cover plate 1, the sealing element 2 and the fixing element 3; the cover plate 1 has a through hole 11; the sealing element 2 comprises a connecting part 21 and a sealing part 22, the sealing part 22 is fixedly connected with the connecting part 21, the connecting part 21 is limited at one side of the cover plate 1, and at least part of the sealing part 22 is positioned in the through hole 11; the fixing member 3 is coupled with the coupling portion 21 and detachably coupled with the cover plate 1 so that the sealing member 2 seals the through-hole 11.

In the embodiment of the application, after at least part of the sealing part 22 extends into the through hole 11, the fixing part 3 can be used for realizing the fixed connection between the connecting part 21 and the cover plate 1, and meanwhile, the subsequent sealing part 2 can be conveniently detached, and when the fixing part 3 is fixedly connected with the cover plate 1, the sealing of the sealing part 2 on the through hole 11 can be realized.

Wherein, the through-hole 11 that sets up on the apron 1 is used for pouring into electrolyte into the inner chamber of battery. The sealing element 2 can be a sealing plug or an electrode column included by the battery, when the sealing element 2 is the electrode column, the secondary liquid injection of the battery is realized, and meanwhile, the disassembly of the electrode column is realized, so that the subsequent replacement of the electrode column is convenient.

Alternatively, in the present embodiment, the end of the sealing portion 22 facing away from the connecting portion 21 has a guiding surface, so that the sealing portion 22 protrudes into the through hole 11. Wherein, the guide surface can be a conical surface or a spherical surface and the like.

In the embodiment of the present application, the connection portion 21 and the sealing portion 22 may be an integral structure, but may be a separate structure.

When the connecting portion 21 and the sealing portion 22 are of a split structure, the sealing portion 22 is inserted into the through hole 11 when the sealing member 2 is assembled, and the connecting portion 21 is covered on the sealing portion 22, and the connecting portion 21 and the cover plate 1 are fixedly connected through the fixing member 3.

Wherein, the material of the sealing portion 22 and the connecting portion 21 may be the same, for example, the sealing portion 22 and the connecting portion 21 are both made of metal material, or both are made of elastic material (such as rubber); of course, the material of the sealing portion 22 and the connecting portion 21 may be different. Illustratively, the sealing portion 22 is an elastic material, and the connecting portion 21 is a metal material.

In the embodiment of the present application, when the connecting portion 21 is detachably fixed on the cover plate 1 by the fixing members 3, in order to ensure the fixing effect of the connecting portion 21, the battery end cap assembly may include a plurality of fixing members 3, and the plurality of fixing members 3 are uniformly distributed in the circumferential direction. So guaranteed connecting portion 21 fixed steadiness on apron 1, guaranteed the homogeneity of connecting portion 21 atress simultaneously, avoided the condition of local perk.

Illustratively, the battery end cover assembly comprises three fixing pieces 3, connecting lines of the three fixing pieces 3 enclose a regular triangle, and the center of the regular triangle coincides with the center of the connecting part 21; or the battery end cover assembly comprises two fixing pieces, and the middle point of the connecting line of the two fixing pieces 2 is coincided with the center of the connecting part 21.

In some embodiments, as shown in fig. 1, the cover plate 1 has a threaded hole 12, the fixing member 3 is a fixing screw, a head of the fixing screw is pressed against the connecting portion 21, and a threaded section of the fixing screw is threadedly coupled with the threaded hole 12.

Wherein the threaded hole 12 is located at the periphery of the through hole 11. The connecting portion 21 has a fixing hole, and the threaded section of the fixing screw 31 passes through the fixing hole 211 on the connecting portion 21 and is in threaded connection with the threaded hole 12 on the cover plate 1.

In other embodiments, the cover plate 1 has a limiting groove, and the fixing member 3 is a limiting hook integrated with the connecting portion 21, and the limiting hook is detachably limited in the limiting groove. Wherein, the limiting groove is positioned at the periphery of the through hole 11.

In this application embodiment, through threaded connection's mode, perhaps through spacing hook and spacing groove complex mode, realize connecting portion 21 and apron 1 dismantled being connected, the follow-up connecting portion 21's of so being convenient for dismantlement.

In some embodiments, when the fixing member 3 is fixedly connected to the cover plate 1, the connecting portion 21 may be limited on one side of the cover plate 1, and at this time, the surface of the connecting portion 21 facing the cover plate 1 is attached to the cover plate 1, so as to achieve sealing of the through hole 11.

In order to further improve the sealing effect of the connecting portion 21 on the through hole 11, as shown in fig. 3, the battery end cover assembly further includes a first sealing ring 4, and the first sealing ring 4 is sleeved on the sealing portion 22 and clamped between the connecting portion 21 and the cover plate 1. Like this, when mounting 3 and apron 1 fixed connection, can realize the extrusion to first sealing washer 4 to improve the sealed effect between connecting portion 21 and the apron 1, and then improve the sealed effect to through-hole 11.

In other embodiments, at least a portion of the sealing portion 22 is located within the through-hole 11, and a portion of the sealing portion 22 located within the through-hole 11 is in interference fit with a wall of the through-hole 11. Thus, the sealing portion 22 and the through hole 11 are in interference fit, and the through hole 11 can be sealed.

In order to realize interference fit between the sealing portion 22 and the wall of the through hole 11, the outer diameter of the sealing portion 22 in the same plane is slightly larger than the aperture of the through hole 11. Illustratively, the difference between the outer diameter of the seal portion 22 and the hole diameter of the through hole 11 is greater than or equal to 0.15 mm and less than or equal to 0.25 mm.

Of course, in the present embodiment, in addition to the sealing of the through hole 11 by the above two methods, the through hole 11 may also be sealed by a combination of the above two methods, that is, the sealing between the connecting portion 21 and the cover plate 1, and the sealing between the sealing portion 22 and the wall of the through hole 11.

In some embodiments, the sealing portion 22 may have a cylindrical structure, such as a cylindrical structure, a prismatic structure, or the like, or a frustum-shaped structure, such as a truncated cone-shaped structure, or the like.

When the sealing portion 22 is of a frustum-shaped structure, the sealing portion 22 can conveniently extend into the through hole 11, the contact area between the sealing portion 22 and the wall of the through hole 11 can be increased, and the sealing effect is improved. And for the split type connecting part 21 and the sealing part 22, on the fixed connection of the connecting part 21 and the cover plate 1, the sealing part 22 can be further pressed by the connecting part 21, so that the sealing effect between the sealing part 22 and the hole wall of the through hole 11 is further improved.

Alternatively, the surface of the seal portion 22 has a first annular projection, and the hole wall of the through-hole 11 has a second annular projection, and the first annular projection abuts against an opposite tooth surface of the second annular projection. In this way, not only the seal portion 22 can be sealed from the wall of the through hole 11 in the radial direction, but also the seal portion 22 can be sealed from the wall of the through hole 11 in the axial direction.

The cross sections of the first annular convex teeth and the second annular convex teeth can be regular triangles or right triangles and the like. The number of the first annular convex teeth and the second annular convex teeth can be one or a plurality. The number of the first annular convex teeth may be one more than that of the second annular convex teeth, or the number of the second annular convex teeth may be one more than that of the first annular convex teeth.

When the surface of the sealing part 22 is provided with a plurality of first annular convex teeth and the hole wall of the through hole 11 is provided with a plurality of second annular convex teeth, the plurality of first annular convex teeth and the plurality of second annular convex teeth are alternately arranged, and the first annular convex teeth are elastically limited on one side of the second annular convex teeth, which is far away from the connecting part 21; when the surface of the sealing portion 22 has a first annular convex tooth and the hole wall of the through hole 11 has a second annular convex tooth, the first annular convex tooth is located on one side of the second annular convex tooth close to the connecting portion 21, and may be elastically limited on one side of the second annular convex tooth away from the connecting portion 21.

For the case that the first annular convex tooth is positioned on the side of the second annular convex tooth close to the connecting part 21, under the pressing action of the connecting part 21 on the sealing part 22, the abutting effect of the opposite tooth surfaces of the first annular convex tooth and the second annular convex tooth can be further improved, so that the sealing effect of the sealing part 22 on the through hole 11 is improved; for the situation that the first annular convex tooth is elastically limited at the side of the second annular convex tooth far away from the connecting part 21, the possibility that the sealing part 22 is separated from the through hole 11 can be reduced through the limitation of the second annular convex tooth to the first annular convex tooth.

In some embodiments, as shown in fig. 3 and 4, the sealing portion 22 has a first step surface 221 facing away from the connecting portion 21, the hole wall of the through hole 11 has a second step surface 111 facing the connecting portion 21, and the first step surface 221 is supported on the second step surface 111.

In this way, the first step surface 221 and the second step surface 111 are brought into contact with each other, whereby the through hole 11 can be sealed in the radial direction. In addition, for the connecting portion 21 and the sealing portion 22 of the split structure, on one hand, the sealing portion 22 can be prevented from being separated from the through hole 11 by limiting the first step surface 221 by the second step surface 111; on the other hand, in the fixed connection portion 21 and the cover plate 1, the sealing portion 22 can be pressed by the connection portion 21, and the effect of engagement of the first step surface 221 with the second step surface 111 can be further improved, thereby improving the sealing effect on the through hole 11.

Optionally, as shown in fig. 5, the battery end cap assembly 10 further includes a second sealing ring 5, and the second sealing ring 5 is sleeved on the sealing portion 22 and located between the first step surface 221 and the second step surface 111. In this way, the second seal ring 5 is filled between the first step surface 221 and the second step surface 111, and thus the sealing effect between the first step surface 221 and the second step surface 111 can be effectively ensured.

The number of the second sealing rings 5 may be one or more, and the specific size of the specific sealable portion 22 and the specific size of the through hole 11 are determined, as long as effective secondary sealing can be achieved between the first step surface 221 and the second step surface 111 after the connecting portion 21 and the cover plate 1 are fixedly connected.

In some embodiments, as shown in fig. 6, the seal 22 includes a first seal segment 222 and a second seal segment 223; the first sealing section 222 is fixedly connected with the connecting portion 21, the second sealing section 223 is provided with a first step surface 221 which is back to the connecting portion 21, the through hole 11 is provided with a second step surface 111 which faces the connecting portion 21, the first sealing section 222 and the second sealing section 223 are located in the through hole 11, and the first step surface 221 and the second step surface 111 are matched for limiting.

Thus, when the sealing element 2 seals the through hole 11, the second sealing section 223 can be plugged into the through hole 11, the second sealing section 223 is limited by the cooperation of the first step surface 221 and the second step surface 111, the second sealing section 223 is prevented from being separated from the through hole 11, the first sealing section 222 is plugged into the through hole 11, and the connecting part 21 is fixedly connected with the cover plate 1.

When the first sealing section 222 and the second sealing section 223 realize sealing of the through hole 11, one of the first sealing section 222 and the second sealing section 223 may be in interference fit with the hole wall of the through hole 11, so as to reduce the machining accuracy of the other; the first sealing section 222 and the second sealing section 223 may be in interference fit with the hole wall of the through hole 11, which is not limited in the embodiment of the present application.

The specific structures of the first sealing section 222 and the second sealing section 223 can be described with reference to the above embodiments. Illustratively, the first sealing section 222 and the second sealing section 223 are both truncated cone-shaped structures, and the second sealing section 223 has a first annular convex tooth, and at this time, the hole wall of the through hole 11 has a second annular convex tooth.

Alternatively, the first sealing section 222 and the connecting portion 21 may be an integral structure or a split structure.

The first sealing section 222 and the second sealing section 223 may be made of the same material or different materials. When the first sealing section 222 and the second sealing section 223 are made of the same material, such as a metal material or an elastic material, the first sealing section 222 and the second sealing section 223 can be integrated by injection molding. When the first sealing section 222 and the second sealing section 223 are made of different materials, for example, the first sealing section 222 is made of a metal material, and the second sealing section 223 is made of an elastic material, the first sealing section 222 and the second sealing section 223 can be integrated in advance by bonding, sintering, and the like, so as to reduce the number of structural members, and facilitate improving the sealing efficiency of the through hole 11.

In combination with the above, the second seal ring 4 may also be disposed between the first step surface 221 of the second seal segment 223 and the second step surface 111 of the through hole 11, which may be specifically referred to the above embodiments, and details of the embodiments of the present application are not repeated here.

In some embodiments, as shown in fig. 7, an end of the sealing portion 22 away from the connection portion 21 has a barb 224, and the barb 224 is limited on a side of the cover plate 1 away from the connection portion 21. In this way, after the sealing portion 22 extends into the through hole 11, the barb 224 can limit the position of the cover plate 1 on the side away from the connecting portion 21, so as to reduce the possibility that the sealing portion 22 is separated from the through hole 11.

In combination with the material of the sealing portion 22, the barb 224 is made of an elastic material, and can be pulled out of the sealing portion 22 by an external force based on its elastic deformation.

Optionally, the barb 224 has a sealing surface facing the cover plate 1, which sealing surface abuts a surface of the cover plate 1. So, through the setting of sealed face, when barb 224 is spacing to deviate from one side of connecting portion 21 at apron 1, sealed face can deviate from the surface contact of connecting portion 21 with apron 1 to one side that deviates from connecting portion 21 at apron 1 seals up through-hole 11, with the further sealed effect that improves through-hole 11.

In some embodiments, as shown in fig. 6, the through hole 11 is a counter sunk platform hole, and the connecting portion 21 is accommodated in the counter sunk platform hole and limited on the step surface of the counter sunk platform hole.

So, through the setting in heavy platform hole, can realize hiding connecting portion 21, avoid protruding connecting portion 21 of apron 1 to touch other barriers, can also guarantee the setting of follow-up other components on apron 1. Such as the adhesion of protective plates or the like on the cover plate 1.

In some embodiments, the fixing hole 211 is a counter sunk hole, and the end of the fixing member 3 is received in the counter sunk hole and pressed against the stepped surface of the counter sunk hole. So, the setting of accessible heavy platform hole realizes hiding the tip of mounting 3, combines above-mentioned mounting 3 promptly, can hold set screw's head, realizes hiding of set screw to be convenient for follow-up other component's setting on apron 1 avoids other components raised problem to appear. Such as the adhesion of the protection plate and the like on the cover plate 1 to increase the adhesion area of the protection plate and the cover plate 1, and realize the effective compression of the sealing element 2.

Fig. 8 illustrates a schematic structural diagram of a battery 100 according to an embodiment of the present disclosure. As shown in fig. 8, the battery 100 includes a housing 20, a cell assembly 30 and a battery end cap assembly 10, the housing 20 has an accommodating cavity and an opening communicating the accommodating cavity with an external space, the cell assembly 30 is located in the accommodating cavity and fixedly connected to the bottom of the housing 20, the battery end cap assembly 10 is fixedly connected to the housing 20 and seals the opening of the housing 20, and the battery end cap assembly 10 is further connected to the cell assembly 30.

The battery end cap assembly 10 is as described in the above embodiments, and in combination with the above battery end cap assembly 10, since the sealing member 2 is detachably fixed on the cover plate 1, the electrolyte can be supplemented to the battery 100 in the following process, and the secondary use of the battery 100 can be realized.

The embodiment of the application also provides a battery pack which comprises the battery in the embodiment. So, combine the aforesaid, the battery package of this application in the use, can be convenient for follow-up sealing member's dismantlement to the secondary of the battery of being convenient for annotates liquid, has prolonged the life of battery package.

The embodiment of the application also provides electric equipment which can be energy storage equipment, a vehicle and the like. The electric device includes the battery according to the above embodiment, or the battery pack according to the above embodiment. So, combine the aforesaid, the consumer of this application can be convenient for follow-up sealing member's dismantlement in the use to the secondary of the battery of being convenient for annotates the liquid, has prolonged the life of battery package, and then is convenient for reduce the cost of consumer.

In the application examples, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the examples of the application can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application embodiment. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the application example, and is not intended to limit the application example, and various modifications and changes may be made to the application example by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the applied embodiment shall be included in the protection scope of the applied embodiment.

Claims

1. A battery end cap assembly, comprising:

a cover plate having a through hole;

2. The battery end cap assembly of claim 1, wherein the cover plate has a threaded bore, the securing member is a set screw having a head portion crimped onto the connecting portion and a threaded portion of the set screw.

3. The battery end cap assembly of claim 1, wherein the cover plate has a retaining groove, and the securing member is a retaining hook integral with the connecting portion, the retaining hook being removably retained within the retaining groove.

4. The battery end cap assembly of any of claims 1-3, wherein the battery end cap assembly comprises a plurality of the securing members, and wherein the plurality of securing members are evenly distributed in a circumferential direction.

5. The battery end cap assembly of claim 1, wherein the battery end cap assembly includes a first seal ring that fits over the sealing portion and is clamped between the connecting portion and the cover plate.

6. The battery end cap assembly of claim 1 or 5, wherein the portion of the seal located within the through hole has an interference fit with the wall of the through hole.

7. The battery end cap assembly of claim 6, wherein the sealing portion has a first stepped surface facing away from the connecting portion, and the through hole has a second stepped surface facing toward the connecting portion, the first stepped surface abutting the second stepped surface.

8. The battery end cap assembly of claim 7, further comprising a second seal ring disposed over the seal portion and between the first step surface and the second step surface.

9. The cell end cap assembly of claim 1 or 5, wherein the seal comprises a first seal segment and a second seal segment;

the first sealing section is fixedly connected with the connecting part, the second sealing section is provided with a first step surface back to the connecting part, the through hole is provided with a second step surface facing the connecting part, the first sealing section and the second sealing section are both positioned in the through hole, and the first step surface is abutted to the second step surface.

10. The battery end cap assembly of claim 9, wherein the first seal segment is a unitary structure with the second seal segment.

11. The battery end cap assembly of claim 9, wherein at least one of the first seal segment and the second seal segment has an interference fit with a bore wall of the through bore.

12. The battery end cap assembly of claim 1, wherein the surface of the sealing portion has a first annular lobe and the wall of the through-hole has a second annular lobe, the first annular lobe abutting an opposing tooth face of the second annular lobe.

13. The battery end cap assembly of claim 12, wherein the first annular lobe is resiliently restrained to a side of the second annular lobe remote from the connecting portion.

14. The battery end cap assembly of claim 1, wherein an end of the sealing portion remote from the connecting portion has a barb resiliently retained on a side of the cover plate remote from the connecting portion.

15. The battery end cap assembly of claim 14, wherein the barb has a sealing surface facing the cover plate, the sealing surface abutting a surface of the cover plate.

16. The battery end cap assembly of claim 1, wherein the through-hole is a counter sink hole, and the connecting portion is received in the counter sink hole and is retained on a step surface of the counter sink hole.

17. A battery comprising a battery end cap assembly according to any one of claims 1 to 16.

18. A battery pack, characterized in that the battery pack comprises the battery according to claim 17.

19. An electrical device comprising the battery of claim 17 or the battery pack of claim 18.