CN218351575U - A end cover subassembly, battery monomer, battery package and consumer for battery monomer - Google Patents

Abstract

The utility model discloses a be used for free end cover subassembly of battery, the battery monomer, battery package and consumer, electric core top cap is including the apron, the utmost point post structure of setting on the apron, utmost point post structure includes anodal utmost point post and negative pole post subassembly, anodal utmost point post and apron electrically conductive connection, negative pole post subassembly includes the briquetting, rivet and insulating space layer, insulating space layer sets up between briquetting and apron, the rivet passes the briquetting in proper order, insulating space layer and apron, and electrically conductive with the briquetting is connected, with insulating space layer and apron insulating connection, anodal utmost point post and negative pole post subassembly are kept away from the free roll core place side interval setting of battery along the apron. The positive pole and the negative pole of the end cover assembly are positioned on the same side, so that grouping of the battery modules and welding of the conductive bars are facilitated.

Description

A end cover subassembly, battery monomer, battery package and consumer for battery monomer

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a be used for free end cover subassembly of battery, battery cell package and consumer.

Background

In the related art, the positive electrode post and the negative electrode post of the battery cell are disposed at two ends of the battery cell, and the explosion-proof valve is disposed at one end of the positive electrode post or one end of the negative electrode post. Anodal utmost point post and negative pole utmost point post setting are at the both ends of electric core, the battery module of not being convenient for in groups and the welding of leading electrical drainage.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a be used for free end cover assembly of battery, end cover assembly's anodal utmost point post and negative pole post lie in same one side, the battery module of being convenient for in groups and the welding of leading electrical drainage.

The utility model discloses still aim at providing a battery monomer who has above-mentioned end cover assembly.

The utility model discloses still aim at providing one kind and have the free battery package of above-mentioned battery.

The utility model discloses still aim at providing an consumer who has above-mentioned battery package.

According to the utility model discloses an embodiment of the first aspect is used for free end cover subassembly of battery, be in including apron, setting utmost point post structure on the apron, utmost point post structure includes anodal utmost point post and negative pole post subassembly, anodal utmost point post with apron electrically conductive connection, negative pole post subassembly includes briquetting, rivet and insulating space layer, insulating space layer set up in the briquetting with between the apron, the rivet passes in proper order the briquetting insulating space layer with the apron, and with briquetting electrically conductive connection, with insulating space layer with apron insulating connection, anodal utmost point post with negative pole post subassembly along the apron is kept away from free book core place side interval setting of battery.

According to the utility model discloses a welding that is used for free end cover subassembly of battery, through keeping away from free book core place side interval setting of battery along the apron with anodal utmost point post and negative pole post subassembly, and the briquetting passes through the insulating spacer layer and is insulating with the apron, rivet and apron insulating connection for anodal utmost point post and negative pole post subassembly interval just set up in same one side of apron insulatingly, be convenient for battery module in groups and lead the busbar.

According to some embodiments of the utility model, the anodal utmost point post is in the ascending height of thickness side of end cover subassembly with the negative pole utmost point post subassembly is in the ascending highly uniform of end cover subassembly thickness side. Through highly establishing positive terminal pole in the thickness direction of end cover subassembly and negative terminal pole subassembly highly to establish to unanimous in end cover subassembly thickness direction for positive terminal pole and negative terminal pole subassembly can weld on the apron with the coplanar same height of one side, have reduced the welding number of times, have promoted welding efficiency.

According to the utility model discloses a some embodiments, the apron is provided with first through-hole, the insulating wall is provided with the second through-hole, the briquetting is provided with the third through-hole, first through-hole the second through-hole with the third through-hole sets up relatively. The cover plate is provided with the first through hole, the insulating space layer is provided with the second through hole, the pressing block is provided with the third through hole, the first through hole, the second through hole and the third through hole are arranged oppositely, so that a rivet can conveniently penetrate through the first through hole, the second through hole and the third through hole to be connected with the winding core, the insulating space layer is connected with the pressing block together, and the assembly is convenient.

According to some embodiments of the present invention, the cover plate is provided with two first through holes, the rivets include first rivets and second rivets, two one of the first through holes is used for accommodating the first rivets, and two the other one of the first through holes is used for accommodating the second rivets. The first rivet and the second rivet penetrate through the two first through holes in the cover plate to be connected with the winding core, and the insulating spacing layer and the pressing block are connected, so that the connection reliability of the insulating spacing layer and the pressing block is improved.

According to the utility model discloses a some embodiments, through configuring into with anodal utmost point post from the orientation roll up the core place side to keeping away from the integrative punching press boss that forms of roll core place side, improved the utilization ratio of apron, the end cover subassembly intensity that obtains is high, and rigidity is big, light in weight, and operation simple process, and production efficiency is high.

According to some embodiments of the utility model, the apron is circular, anodal utmost point post with the bow-shaped of negative pole post subassembly for the symmetry setting, just anodal utmost point post with the negative pole post subassembly is the arc surface in one side of keeping away from each other. Through setting up anodal utmost point post and negative terminal post subassembly into bow-shaped, and keep away from one side each other and be the arc surface for anodal utmost point post and negative terminal post subassembly can have great surface area, are convenient for and lead electrical drainage and be connected.

According to some embodiments of the utility model, the end cover subassembly still includes explosion-proof valve, explosion-proof valve sets up anodal utmost point post with between the negative terminal post subassembly, and with anodal utmost point post the negative terminal post subassembly interval sets up. Through setting up the explosion-proof valve between anodal utmost point post and negative terminal post subassembly, and set up with anodal utmost point post, negative terminal post subassembly interval for when the battery module is in groups, the anodal utmost point post of a plurality of electric cores and negative terminal post subassembly all are located the both sides of explosion-proof valve, when connecting the utmost point post of adjacent electric core through leading the electrical drainage, lead the electrical drainage and can not shelter from the explosion-proof valve, improved the safety of battery module.

According to the utility model discloses a some embodiments, the end cover subassembly is still including annotating the liquid hole, it sets up to annotate the liquid hole anodal utmost point post with between the negative pole utmost point post subassembly, it is used for injecting into electrolyte to battery monomer inside to annotate the liquid hole. Through set up on the end cover subassembly and annotate the liquid hole, be convenient for pour into electrolyte into to battery monomer inside.

According to the utility model discloses battery monomer of the embodiment of second aspect, including casing, the end cover subassembly of rolling up core and above-mentioned embodiment, the casing has the opening, roll up the core and hold in the casing, the end cover subassembly covers the opening, with will roll up the core lid and fit in the casing.

According to the utility model discloses battery monomer is through adopting foretell end cover subassembly for anodal utmost point post and negative pole utmost point post subassembly are located the same one end of battery, and the free assembly of battery of being convenient for has improved assembly efficiency.

According to the battery package of the embodiment of the third aspect of the present invention, the battery pack includes the battery cells in the above-described embodiments. According to the utility model discloses battery package, through adopting above-mentioned battery monomer, the assembly of the battery package of being convenient for has improved assembly efficiency.

According to the utility model discloses consumer of the embodiment of fourth aspect, including the battery package in the above-mentioned embodiment.

According to the utility model discloses consumer, through adopting foretell battery package, improved production efficiency, practiced thrift manufacturing cost.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a perspective view of an end cap assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of an end cap assembly according to an embodiment of the present invention;

fig. 3 is a top view of an end cap assembly according to an embodiment of the present invention;

fig. 4 is a bottom view of an end cap assembly according to an embodiment of the present invention;

fig. 5 is a perspective view of a battery cell according to an embodiment of the present invention;

fig. 6 is an exploded view of a battery cell according to an embodiment of the present invention;

fig. 7 is a perspective view of a battery pack according to an embodiment of the present invention;

fig. 8 is a structural diagram of an electric device according to an embodiment of the present invention.

Reference numerals:

an end cap assembly 100,

A cover plate 1, a first through hole 10a,

A positive pole post 2,

A negative pole post component 3, a pressing block 31, a third through hole 310a, a rivet 32, a first rivet 321, a second rivet 322, an insulating spacer layer 33, a second through hole 330a,

An explosion-proof valve 4,

A liquid injection hole 5,

A battery cell 200, a case 101, a winding core 102,

A battery pack 300, a battery box 201,

Powered device 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

The end cap assembly 100 for the battery cell 200, the battery pack 300 and the electric device 400 according to the embodiment of the present invention are described below with reference to the drawings.

As shown in fig. 1, fig. 2 and fig. 4, according to the utility model discloses an end cover assembly 100 for battery cell 200, including apron 1, the utmost point post structure of setting on apron 1, utmost point post structure includes anodal utmost point post 2 and negative pole post subassembly 3, anodal utmost point post 2 is connected with apron 1 electrically conductive, negative pole post subassembly 3 includes briquetting 31, rivet 32 and insulating space layer 33, insulating space layer 33 sets up between briquetting 31 and apron 1, rivet 32 passes briquetting 31 in proper order, insulating space layer 33 and apron 1, and with briquetting 31 electrically conductive connection, with insulating space layer 33 and apron 1 insulating connection, anodal utmost point post 2 and negative pole post subassembly 3 keep away from the setting of the side interval of the core 102 place of battery cell 200 along apron 1.

Specifically, as shown in fig. 1, fig. 2 and fig. 4, the embodiment of the present invention provides an end cover assembly 100 for a battery cell 200, including a cover plate 1, a post structure disposed on the cover plate 1, the post structure includes a positive post 2 and a negative post assembly 3, and the positive post 2 and the negative post assembly 3 are respectively used for being connected to the positive electrode and the negative electrode of the winding core 102. The anode pole 2 is electrically connected with the cover plate 1, the cathode pole assembly 3 comprises a pressing block 31, a rivet 32 and an insulating spacer layer 33, and the insulating spacer layer 33 is arranged between the pressing block 31 and the cover plate 1 to insulate the pressing block 31 from the cover plate 1. The rivet 32 penetrates through the pressing block 31, the insulating spacer layer 33 and the cover plate 1 in sequence, is conductively connected with the pressing block 31 and is in insulated connection with the cover plate 1, the rivet 32 penetrates through one end of the cover plate 1 and is connected with the negative electrode of the battery cell, the other end of the rivet is conductively connected with the pressing block 31, the negative electrode of the battery cell is connected with the pressing block 31, and the rivet 32 is in insulated connection with the cover plate 1, so that the anode pole 2 is insulated from the cathode pole. Anodal utmost point post 2 and negative terminal post subassembly 3 set up along apron 1 and keep away from the rolling core 102 place side interval of battery cell 200, like this, set up anodal utmost point post 2 and negative terminal post subassembly 3 in the same one side of end cover subassembly 100, and mutual noninterference between anodal utmost point post 2 and the negative terminal post subassembly 3, the welding of being convenient for battery module in groups and conducting bar.

From this, according to the utility model discloses an end cover subassembly 100 for battery cell 200, through with anodal utmost point post 2 and negative pole post subassembly 3 along apron 1 keep away from battery cell 200's book core 102 place side interval setting, and briquetting 31 is insulating through insulating spacer layer 33 and apron 1, rivet 32 is connected with apron 1 is insulating for anodal utmost point post 2 sets up in apron 1 same one side with negative pole post subassembly 3 interval and insulating ground, the welding of being convenient for battery module in groups and leading the electrical drainage.

In some embodiments, the cover plate 1 is an electrical conductor, and the cover plate 1 and the positive electrode post 2 together serve as a positive electrode.

In some embodiments, the rivet 32 passes through the cap plate 1 without contacting the cap plate 1, thereby being insulated from the cap plate 1.

The utility model discloses an in some embodiments, as shown in fig. 1 and fig. 2, the height of anodal utmost point post 2 in the thickness direction of end cover subassembly 100 highly unanimous with negative terminal subassembly 3 in the thickness direction of end cover subassembly 100 for anodal utmost point post 2 and negative terminal subassembly 3 can weld on the same height of apron 1 with the coplanar, have reduced the welding number of times, have promoted welding efficiency.

In some embodiments of the present invention, as shown in fig. 2, fig. 3 and fig. 4, the cover plate 1 is provided with a first through hole 10a, the insulating spacer layer 33 is provided with a second through hole 330a, the pressing block 31 is provided with a third through hole 310a, and the first through hole 10a, the second through hole 330a and the third through hole 310a are oppositely disposed. Through setting up first through-hole 10a on apron 1, set up second through-hole 330a on insulating space layer 33, set up third through-hole 310a on briquetting 31, and first through-hole 10a, second through-hole 330a and third through-hole 310a set up relatively, be convenient for rivet 32 to pass first through-hole 10a, second through-hole 330a and third through-hole 310a and be connected with core 102, and link together insulating space layer 33 and briquetting 31, the easy assembling.

In some embodiments of the present invention, as shown in fig. 2 and 4, two first through holes 10a are provided on the cover plate 1, the rivet 32 includes a first rivet 321 and a second rivet 322, one of the two first through holes 10a is used for accommodating the first rivet 321, and the other of the two first through holes 10a is used for accommodating the second rivet 322. The first rivet 321 and the second rivet 322 penetrate through the two first through holes 10a of the cover plate 1 to be connected with the winding core 102, and the insulating spacer layer 33 and the pressing block 31 are connected, so that the reliability of the connection between the insulating spacer layer 33 and the pressing block 31 is improved.

Specifically, two second through holes are formed in the insulating spacer layer 33, two third through holes 310a are formed in the pressing block 31, the two first through holes 10a are arranged at intervals, and the two second through holes 330a and the two third through holes 310a are arranged opposite to the two first through holes 10 a.

Of course, it is understood that one first through hole 10a or more than two second through holes 330a may be provided on the cover plate 1. When the first through hole 10a is one, production and assembly are facilitated; when the number of first through holes 10a is two or more, the reliability of connection of insulating spacer layer 33 and compact 31 is further improved.

In some embodiments of the present invention, as shown in fig. 4, the positive electrode post 2 is configured as a boss formed by punching from the side facing the winding core 102 to the side away from the winding core 102. Through configuring into anodal utmost point post 2 to the boss that forms from the integrative punching press of the side of rolling up core 102 of keeping away from to the side of rolling up core 102, improved apron 1 utilization ratio, the end cover subassembly 100 that obtains is high in strength, and the rigidity is big, light in weight, and operation simple process, and production efficiency is high.

Of course, the present application is not so limited; in other embodiments, the positive electrode post 2 may be integrally formed on the cover plate 1 by other means, such as die casting.

In some embodiments of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the cover plate 1 is circular, the positive electrode post 2 and the negative electrode post assembly 3 are bow-shaped and symmetrically disposed, and the positive electrode post 2 and the negative electrode post assembly 3 are arc surfaces on the side away from each other. Through setting up anodal utmost point post 2 and negative terminal subassembly 3 into bow-shaped, and keep away from one side each other and be the arc surface for anodal utmost point post 2 and negative terminal subassembly 3 can have great surface area, are convenient for and lead electrical drainage and be connected.

Of course, the present application is not so limited; in other embodiments, the positive electrode post 2 and the negative electrode post assembly 3 may also be rectangular, square, circular, oval, quincunx, or the like.

It is understood that the shape of the positive electrode post 2 and the negative electrode post assembly 3 may be the same or different.

In some embodiments of the present invention, as shown in fig. 1, fig. 3 and fig. 4, the end cap assembly 100 further includes an explosion-proof valve 4, the explosion-proof valve 4 is disposed between the positive electrode post 2 and the negative electrode post assembly 3, and is disposed at an interval from the positive electrode post 2 and the negative electrode post assembly 3. Through setting up explosion-proof valve 4 between anodal utmost point post 2 and negative terminal subassembly 3, and set up with anodal utmost point post 2, negative terminal subassembly 3 interval for when the battery module is in groups, anodal utmost point post 2 and the negative terminal subassembly 3 of a plurality of electric cores all are located explosion-proof valve 4's both sides, when connecting the utmost point post of adjacent electric core through leading the electrical drainage, lead the electrical drainage and can not shelter from explosion-proof valve 4, improved the safety of battery module.

In some embodiments, as shown in fig. 1, 3 and 4, the explosion-proof valve 4 is disposed between the positive electrode post 2 and the negative electrode post assembly 3, and the explosion-proof valve 4 is of an oval shape.

In some embodiments of the present invention, as shown in fig. 5 and 6, the end cap assembly 100 further includes a liquid injection hole 5, the liquid injection hole 5 is disposed between the positive electrode post 2 and the negative electrode post assembly 3, and the liquid injection hole 5 is used for injecting the electrolyte into the battery cell 200. By providing the injection hole 5 in the end cap assembly 100, it is easy to inject the electrolyte into the battery cell 200.

As shown in fig. 5 and 6, a battery cell 200 according to an embodiment of the present invention includes a case 101, a winding core 102, and the end cap assembly 100 in the above embodiment, where the case 101 has an opening, the winding core 102 is accommodated in the case 101, and the end cap assembly 100 covers the opening to cover the winding core 102 in the case 101.

According to the utility model discloses battery cell 200 is through adopting foretell end cover subassembly 100 for anodal utmost point post 2 and negative pole post subassembly 3 are located the same one end of battery, and the assembly of the battery cell 200 of being convenient for has improved assembly efficiency.

Specifically, the housing 101 is a single-pass aluminum housing 101, and the end cap assembly 100 and the housing 101 are laser welded together.

As shown in fig. 7, a battery pack 300 according to an embodiment of the third aspect of the present invention includes the battery cells 200 in the above embodiments.

According to the utility model discloses battery package 300 through adopting above-mentioned battery monomer 200, the assembly of the battery package 300 of being convenient for has improved assembly efficiency.

Specifically, as shown in fig. 7, the battery pack 300 may include a battery box 201, and a plurality of battery cells 200 are mounted and arranged on the battery box 201 to realize intensive arrangement of the battery cells 200. When the battery pack 300 includes a plurality of battery cells 200 and each battery cell 200 adopts the above structure, the plurality of battery cells 200 can be assembled conveniently, and the assembly efficiency of the battery pack 300 is improved.

As shown in fig. 8, the electric device 400 according to the fourth aspect of the present invention includes the battery pack 300 in the above embodiment.

In the present embodiment, the structure of the electric device 400 is not limited. For example, the electric device 400 may be a mobile device such as a vehicle, a ship, a small airplane, etc., which includes a power source including the battery pack 300 described above. The power provided by the battery pack 300 provides driving force for the electric device 400. The mobile device may be a purely electric device, i.e. the driving force of the electric device 400 is all electric energy, and the power source only includes the battery pack 300. The mobile device may also be a hybrid device, and the power source includes the battery pack 300 and other power devices such as an engine. Taking the vehicle shown in fig. 8 as an example, in some embodiments, the electric device 400 is a new energy vehicle, which may be a pure electric vehicle, a hybrid electric vehicle, an extended range vehicle, an electric tricycle, or a two-wheeled electric vehicle.

For example, the electric device 400 may be an energy storage device such as an energy storage cabinet, a charging cabinet of a mobile device, or an energy storage device of another device. For example, the solar power generation equipment can be configured with an energy storage cabinet, and electric energy generated by solar power generation is temporarily stored in the energy storage cabinet so as to be used by devices such as street lamps and bus stop boards.

According to the utility model discloses consumer, through adopting foretell battery package, improved production efficiency, practiced thrift manufacturing cost.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. An end cap assembly for a battery cell, comprising:

the terminal post structure comprises a cover plate (1) and a terminal post structure arranged on the cover plate (1), wherein the terminal post structure comprises a positive terminal post (2) and a negative terminal post assembly (3);

the positive pole column (2) is in conductive connection with the cover plate (1);

the negative pole post assembly (3) comprises a pressing block (31), a rivet (32) and an insulating spacing layer (33), the insulating spacing layer (33) is arranged between the pressing block (31) and the cover plate (1), and the rivet (32) sequentially penetrates through the pressing block (31), the insulating spacing layer (33) and the cover plate (1), is in conductive connection with the pressing block (31), and is in insulating connection with the cover plate (1);

the positive pole post (2) and the negative pole post assembly (3) are arranged at intervals along the side, away from the single winding core of the battery, of the cover plate (1).

2. The end cap assembly according to claim 1, wherein the height of the positive electrode post (2) in the thickness direction of the end cap assembly (100) coincides with the height of the negative electrode post assembly (3) in the thickness direction of the end cap assembly (100).

3. End cap assembly according to claim 1, wherein the cover plate (1) is provided with a first through hole (10 a), the insulating spacer layer (33) is provided with a second through hole (330 a), the compact (31) is provided with a third through hole (310 a), and the first through hole (10 a), the second through hole (330 a) and the third through hole (310 a) are oppositely arranged.

4. An end closure assembly according to claim 3, wherein two first through holes (10 a) are provided in the cover plate (1), and the rivet (32) comprises a first rivet (321) and a second rivet (322), one of the two first through holes (10 a) being adapted to receive the first rivet (321) and the other of the two first through holes (10 a) being adapted to receive the second rivet (322).

5. The end cap assembly according to claim 1, wherein the positive pole post (2) is configured as a boss integrally punched from the side facing the winding core to the side away from the winding core.

6. The end cap assembly according to claim 1, wherein the cover plate (1) is circular, the positive electrode post (2) and the negative electrode post assembly (3) are symmetrically arranged in an arc shape, and the sides of the positive electrode post (2) and the negative electrode post assembly (3) far away from each other are arc surfaces.

7. The end cap assembly according to any one of claims 1-6, further comprising an explosion-proof valve (4), wherein the explosion-proof valve (4) is disposed between the positive pole post (2) and the negative pole post assembly (3) and is spaced apart from the positive pole post (2) and the negative pole post assembly (3).

8. The end cap assembly according to any one of claims 1-6, further comprising an electrolyte injection hole (5), wherein the electrolyte injection hole (5) is arranged between the positive electrode post (2) and the negative electrode post assembly (3), and the electrolyte injection hole (5) is used for injecting electrolyte into the battery cell.

9. A battery cell, comprising:

a housing (101) having an opening;

a winding core (102) housed in the case (101);

the end cap assembly (100) of any of claims 1-8, the end cap assembly (100) covering the opening to cap the core (102) into the shell (101).

10. A battery pack, characterized in that it comprises a battery cell (200) according to claim 9.

11. An electric consumer, characterized in that it comprises a battery pack (300) according to claim 10.

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