CN219739255U - Battery and battery device - Google Patents

Abstract

The present disclosure relates to the field of battery technology, and in particular, to a battery and a battery device, where the battery includes: the battery cell comprises a shell, a battery cell and an insulating assembly, wherein the shell comprises a shell main body and a cover plate, and the cover plate is connected with the shell main body to form a containing cavity; the battery cell is arranged in the accommodating cavity and comprises a battery cell main body and a tab, and the tab is arranged at the end part of the battery cell main body; the insulation assembly is arranged in the accommodating cavity and comprises an insulation seat and a retainer, the insulation seat is connected with the cover plate, the retainer is arranged on one side, away from the cover plate, of the insulation assembly, a first clamping structure is arranged on the insulation seat, a second clamping structure is arranged on the retainer, the first clamping structure is clamped with the second clamping structure, and at least part of the tab is located between the insulation seat and the retainer. The insulation of the tab and the shell is realized, and the risk of short circuit of the battery is reduced.

Description

Battery and battery device

Technical Field

The disclosure relates to the technical field of batteries, and in particular relates to a battery and a battery device.

Background

With the development and progress of technology, electric vehicles are increasingly used. Battery devices are often provided in electric vehicles for powering the electric vehicles. The battery device comprises a plurality of batteries, each battery comprises a shell and a battery core, a containing space is formed in the shell, and the battery core is arranged in the containing space. The battery cell is provided with a battery cell main body and a tab, and the tab is connected with the battery cell main body. Typically the housing is made of a metallic material, which can cause a short circuit in the battery if the tab contacts the housing.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide a battery and a battery device, thereby reducing the risk of battery short circuit at least to some extent.

According to one aspect of the present disclosure there is provided a battery comprising:

the shell comprises a shell main body and a cover plate, wherein the cover plate is connected with the shell main body to form a containing cavity;

the battery cell is arranged in the accommodating cavity and comprises a battery cell main body and a tab, and the tab is arranged at the end part of the battery cell main body;

the insulation assembly is arranged in the accommodating cavity and comprises an insulation seat and a retainer, the insulation seat is connected with the cover plate, the retainer is arranged on one side, far away from the cover plate, of the insulation group, a first clamping structure is arranged on the insulation seat, a second clamping structure is arranged on the retainer, the first clamping structure and the second clamping structure are clamped, and the tab is at least partially positioned between the insulation seat and the retainer;

the insulation seat or the retainer is provided with a limiting structure, and the limiting structure is used for limiting the insulation seat and the retainer to generate relative displacement along the extending direction of the tab.

The battery that this disclosed embodiment provided, including casing, electric core and insulation subassembly, in electric core and insulation subassembly located the casing, insulation subassembly includes insulation seat and holder, the apron connection of insulation seat and casing, the holder is located insulation group and is kept away from one side of apron, the utmost point ear is located between insulation seat and the apron at least partially, the insulation of utmost point ear and casing has been realized, the risk of battery short circuit has been reduced, and be provided with first block structure on the insulation seat, be provided with second block structure on the holder, first block structure and second block structure block, it is convenient to dismantle, be favorable to promoting the production efficiency of battery, be provided with limit structure on insulation seat or holder, can prescribe a limit to the relative position of insulation seat and holder, avoid interfering.

According to another aspect of the present disclosure, there is provided a battery device including the above battery.

The battery device that this disclosed embodiment provided includes the battery, and insulating seat and the apron connection of casing in the battery, the holder is located insulating group and is kept away from the one side of apron, and the utmost point ear is located between insulating seat and the apron at least partially, has realized the insulation of utmost point ear and casing, has reduced the risk of battery short circuit to be provided with first block structure on the insulating seat, be provided with second block structure on the holder, first block structure and second block structure block, it is convenient to dismantle, is favorable to promoting the production efficiency of battery. The limiting structure is arranged on the insulating seat or the retainer, so that the relative positions of the insulating seat and the retainer can be limited, and interference is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic view of a battery according to an exemplary embodiment of the present disclosure;

fig. 2 is a schematic structural view of a first insulation assembly provided in an exemplary embodiment of the present disclosure;

FIG. 3 is an enlarged view of a portion of a first insulation assembly provided in an exemplary embodiment of the present disclosure;

fig. 4 is a schematic structural view of a second insulation assembly provided in an exemplary embodiment of the present disclosure;

fig. 5 is a schematic structural view of a third insulation assembly provided in an exemplary embodiment of the present disclosure;

fig. 6 is a schematic structural view of a battery device according to an exemplary embodiment of the present disclosure.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

The exemplary embodiments of the present disclosure first provide a battery 100, as shown in fig. 1-3, including: the battery pack comprises a shell 10, a battery cell 20 and an insulating assembly 30, wherein the shell 10 comprises a shell main body 11 and a cover plate 12, and the cover plate 12 is connected with the shell main body 11 to form a containing cavity; the battery cell 20 is arranged in the accommodating cavity, the battery cell 20 comprises a battery cell main body 21 and a tab 22, and the tab 22 is arranged at the end part of the battery cell main body 21; the insulation assembly 30 is arranged in the accommodating cavity, the insulation assembly 30 comprises an insulation seat 31 and a retainer 32, the insulation seat 31 is connected with the cover plate 12, the retainer 32 is arranged on one side, far away from the cover plate 12, of the insulation assembly 30, a first clamping structure 310 is arranged on the insulation seat 31, a second clamping structure 320 is arranged on the retainer 32, the first clamping structure 310 and the second clamping structure 320 are clamped, and the tab 22 is at least partially located between the insulation seat 31 and the retainer 32. Wherein, the insulating base 31 or the retainer 32 is provided with a limit structure 33, and the limit structure 33 is used for limiting the relative displacement of the insulating base 31 and the retainer 32 along the extending direction of the tab 22

The battery 100 provided by the embodiment of the disclosure includes a housing 10, a battery core 20 and an insulation assembly 30, the battery core 20 and the insulation assembly 30 are arranged in the housing 10, the insulation assembly 30 includes an insulation seat 31 and a retainer 32, the insulation seat 31 is connected with a cover plate 12 of the housing 10, the retainer 32 is arranged on one side of the insulation group far away from the cover plate 12, a tab 22 is at least partially positioned between the insulation seat 31 and the cover plate 12, insulation between the tab 22 and the housing 10 is realized, the risk of short circuit of the battery 100 is reduced, a first clamping structure 310 is arranged on the insulation seat 31, a second clamping structure 320 is arranged on the retainer 32, the first clamping structure 310 and the second clamping structure 320 are clamped, the disassembly is convenient, the production efficiency of the battery 100 is improved, a limit structure 33 is arranged on the insulation seat 31 or the retainer 32, and the relative positions of the insulation seat 31 and the retainer 32 can be limited, and interference is avoided.

The following will describe in detail the respective portions of the battery 100 provided by the embodiments of the present disclosure:

the case 10 serves to form the outer contour of the battery 100 and protect the devices within the case 10. The housing 10 may include a housing main body 11 and a cover plate 12, and the housing main body 11 and the cover plate 12 are connected to form a receiving chamber. The battery cell 20, the insulating assembly 30, the electrolyte and the like are arranged in the accommodating cavity.

By way of example, the battery 100 in the embodiments of the present disclosure may be of a rectangular or nearly rectangular configuration. On the other hand, the housing 10 has a rectangular or nearly rectangular structure. The housing 10 may include two oppositely disposed first surfaces and four second surfaces located between the first surfaces, the first surfaces having an area greater than an area of the second surfaces. The cover plate 12 forms one first surface of the housing 10, and the opposite side of the housing main body 11 from the cover plate 12 forms the other first surface.

The cover plate 12 and the case body 11 are welded to form a closed accommodating cavity. For example, the cover plate 12 and the case main body 11 may be connected by welding. In order to facilitate the connection between the cover plate 12 and the case body 11, a flange protruding from the second surface of the case 10 may be provided on the cover plate 12 and/or the case body 11, and the flange may be welded during welding, so that the welding is facilitated, and the high temperature damage to the battery cell 20 during the welding can be avoided. Of course, in practical applications, flanges may not be provided on the cover plate 12 and the housing main body 11, which is not limited to the embodiment of the disclosure.

In a possible embodiment, the cover plate 12 may be a flat plate structure, and the housing body 11 is provided with a receiving recess. The shell body 11 may include an end plate and a frame, where the end plate and the cover plate 12 are disposed opposite to each other, the frame is disposed on a side of the end plate facing the cover plate 12, the frame and the end plate are connected to form a receiving recess, and the cover plate 12 is covered on a side of the frame away from the end plate to form a sealed receiving cavity.

When a flange is provided around the housing 10, the housing body 11 may further include a flange provided at a side of the rim remote from the end panel, and the flange extends to the outside of the rim. The flange and the edge of the cover plate 12 are welded to form a flange on the housing 10.

In another possible embodiment, the cover plate 12 and the shell body 11 may be provided with accommodating pits, and when the cover plate 12 and the shell body 11 are buckled, the accommodating pits jointly form an accommodating cavity of the shell 10.

The cover plate 12 includes a first panel and a first frame, and the first frame is disposed on a surface of the first panel facing the case body 11. The case body 11 includes a second panel and a second frame, the second frame is disposed on a surface of the second panel facing the cover plate 12, and the first frame and the second frame are welded to form a sealed accommodating cavity.

When the flange is disposed around the housing 10, the cover 12 further includes a first flange, where the first flange is disposed at an end of the first frame away from the first panel, and the first flange extends outward. The case body 11 further includes a second flange provided at one end of the second frame away from the second panel, and the second flange extends outward. The first flange and the second flange are welded to form a flange on the housing 10.

The battery cell 20 includes a battery cell main body 21 and a tab 22, and the tab 22 is provided at an end of the battery cell main body 21. For example, tabs 22 may be provided at both ends of the cell body 21 in the length direction, respectively. One end of the battery cell main body 21 is provided with a first tab, and the other end of the battery cell main body 21 is provided with a second tab. One of the first tab and the second tab is a positive tab, and the other one of the first tab and the second tab is a negative tab.

It should be noted that, the battery core main body 21 includes more than two pole pieces, the tab 22 includes more than two single-piece tabs, the single-piece tabs extend from the corresponding pole pieces, the width of the single-piece tabs is smaller than that of the pole pieces, and the plurality of single-piece tabs are stacked to form the tab 22 and connected with the pole 40, where the tab 22 can be welded with the pole 40. Wherein the single tab is made of a metal foil having good electrical and thermal conductivity, such as aluminum, copper, or nickel.

The cells 20 in the disclosed embodiments may be coiled cells or laminated cells. When the battery cell 20 is a laminated battery cell, the battery cell 20 is provided with a first pole piece, a second pole piece opposite to the first pole piece and a diaphragm sheet arranged between the first pole piece and the second pole piece, so that a plurality of pairs of the first pole piece and the second pole piece are stacked to form the laminated battery cell. When the battery cell 20 is a winding type battery cell, the winding type battery cell is obtained by winding a first pole piece, a second pole piece opposite to the first pole piece and a diaphragm sheet arranged between the first pole piece and the second pole piece.

A pole 40 may also be provided on the housing 10, the pole 40 being connected to the battery cell 20. By way of example, the post 40 may include a body section, a first connection section and a second connection section, a through hole may be provided on the housing 10, the body section is penetrated through the through hole, the first connection section and the body section are connected, and the first connection section is located outside the housing 10, the first connection section is used to connect an external conductive device (e.g., a bus bar). The second connection section is connected with the main body section, and the second connection section is located inside the housing 10 and is connected with the tab 22. The second connection section and the tab 22 may be welded, or the second connection section and the tab 22 may be connected by an adapter.

Alternatively, the pole 40 may be provided on the cover 12, and a first pole and a second pole may be provided at ends of the cover 12 near the longitudinal direction, respectively. The first pole is connected with the first pole lug, and the second pole is connected with the second pole lug. One of the first pole and the second pole is a positive pole, and the other of the first pole and the second pole is a negative pole.

The insulation assembly 30 is arranged in the accommodating cavity, the insulation assembly 30 comprises an insulation seat 31 and a retainer 32, the insulation seat 31 is connected with the cover plate 12, the retainer 32 is arranged on one side, far away from the cover plate 12, of the insulation group, a first clamping structure 310 is arranged on the insulation seat 31, a second clamping structure 320 is arranged on the retainer 32, the first clamping structure 310 and the second clamping structure 320 are clamped, and the tab 22 is at least partially located between the insulation seat 31 and the retainer 32.

The insulation assembly 30 further includes a limiting structure 33, where the limiting structure 33 is disposed on the first engaging structure 310 or the second engaging structure 320, and the limiting structure 33 is used for limiting the relative displacement of the insulation seat 31 and the retainer 32 along the extending direction of the tab 22. The limit structure 33 realizes the limit of the retainer 32 in the extending direction of the tab 22, and avoids the problem of interference with the battery cell main body 21 or the shell 10 caused by the movement of the retainer 32 in the extending direction of the tab 22.

As shown in fig. 4, the insulating base 31 includes a base 301, a receiving recess 330 is disposed on the base 301, and the first engaging structure 310 is disposed in the receiving recess 330. The holder 32 includes a holder body 302, the holder body 302 is disposed in the accommodating recess 330, and the second engaging structure 320 is disposed at a position opposite to the holder body 302 and the first engaging structure 310.

The accommodating recess 330 on the base 301 may be disposed at a middle portion of the base 301, and the base 301 with thick ends and thin middle is formed by the accommodating recess 330. The frame 302 is disposed in the accommodating recess 330, and a gap is formed between the frame 302 and the bottom surface of the accommodating recess 330, and the tab 22 at least partially extends into the gap.

In a possible embodiment of the present disclosure, the first engaging structure 310 is disposed on a side wall of the accommodating recess 330, and the second engaging structure 320 is disposed at an end of the frame 302 facing the first engaging structure 310.

The first engaging structure 310 includes a first engaging protrusion 311, and the first engaging protrusion 311 is disposed on a sidewall of the accommodating recess 330. The second engaging structure 320 includes a second elastic arm 321 and a second engaging protrusion 322, where one end of the second elastic arm 321 is connected to the frame 302; the second engaging protrusion 322 is disposed at an end of the second elastic arm 321 away from the frame 302, and the second engaging protrusion 322 is engaged with the first engaging protrusion 311.

In a possible embodiment, the limiting structure 33 may include a first limiting portion and a second limiting portion, where the first limiting portion and the second limiting portion are connected to the first engaging protrusion 311, and the first limiting portion and the second limiting portion are arranged along the extending direction of the tab 22, and an interval is formed between the first limiting portion and the second limiting portion, and the second engaging protrusion 322 is located between the first limiting portion and the second limiting portion.

Through setting up first spacing portion and second spacing portion on first block protruding 311, with second block protruding 322 limit in between first spacing portion and the second spacing portion, realized spacing to holder 32 in the lug 22 extending direction, avoid holder 32 to move in the lug 22 extending direction and lead to the problem that takes place to interfere with electric core main part 21 or casing 10.

The first limiting portion and the second limiting portion may be respectively disposed at two ends of the first engaging protrusion 311 along the extending direction of the tab 22. The dimension of the second engaging protrusion 322 in the extending direction of the tab 22 is equal to or slightly smaller than the distance between the first and second limiting portions.

It can be appreciated that, in the embodiment of the present disclosure, the first limiting portion and the second limiting portion may also be disposed on the second engaging protrusion 322, and at this time, the first engaging protrusion 311 is engaged between the first limiting portion and the second limiting portion, which is not limited in the embodiment of the present disclosure.

In another possible embodiment, the limiting structure 33 includes a first limiting portion, and the first limiting portion is disposed at one end of the first engaging protrusion 311 near the cell main body 21 along the extending direction of the tab. That is, the first engaging protrusion 311 is not provided with a limiting portion at one end far away from the battery core main body 21 along the extending direction of the tab, and is limited by the housing 10, so that the structure can be simplified, and the production efficiency can be improved.

The first engaging protrusion 311 may be provided with a first guide surface, which is an inclined surface provided on the first engaging protrusion 311 toward the holder 32. The second engaging protrusion 322 is provided with a second guiding surface, which is an inclined surface disposed on the second engaging protrusion 322 and facing the bottom surface of the accommodating recess 330. The insulation seat 31 and the retainer 32 are guided by the first guide surface on the first engaging protrusion 311 and the second guide surface on the second engaging protrusion 322 when engaged, thereby improving the convenience of engagement.

The frame 302 is provided with two second elastic arms 321, the two second elastic arms 321 are respectively located at two ends of the frame 302 along the length direction, and the tab 22 is located between the two second elastic arms 321. The frame 302 may be a flat plate or a structure similar to a flat plate, the second elastic arm 321 may be perpendicular to the frame 302, the second engaging protrusion 322 is disposed on the outer side of the second elastic arm 321, and the outer side of the second elastic arm 321 is disposed on one side of the second elastic arm 321 away from the tab 22.

In another possible embodiment of the present disclosure, as shown in fig. 5, the first engaging structure 310 includes a first elastic arm 312 and a third engaging protrusion 313, and one end of the first elastic arm 312 is connected to the bottom of the accommodating recess 330; the third engaging protrusion 313 is connected to an end of the first elastic arm 312 away from the base 301. The second engaging structure 320 is an engaging hole 323 on the frame 302, and the third engaging protrusion 313 is engaged with the engaging hole 323. On this basis, the clip hole 323 serves as a limit structure 33 at the same time, limiting the movement of the holder 32 in the extending direction of the tab 22.

The frame 302 may be a flat plate or a structure similar to a flat plate, and the clamping holes 323 are through holes on the frame 302. The first elastic arm 312 is disposed perpendicular to the base 301, and the third engaging protrusion 313 passes through the engaging hole 323 and engages with the frame 302. The first engaging portion is provided with a first guiding surface, which is an inclined surface of the first engaging portion on a side far away from the base 301. The first guide surface guides the insulating base 31 and the retainer 32 when they are engaged, thereby improving the convenience of engagement.

Two first elastic arms 312 are arranged in the accommodating recess 330, the two first elastic arms 312 are arranged at intervals along the length direction of the frame body 302, and the tab 22 is positioned between the two first elastic arms 312. The third engaging protrusion 313 is disposed at an outer side of the first elastic arm 312, and the outer side of the first elastic arm 312 is a side of the first elastic arm 312 away from the tab 22.

The insulating holders 31 are abutted against the cover plate 12, that is, the insulating members 30 are respectively abutted against both surfaces of the case 10 of the battery 100, and the case 10 is supported in the thickness direction by the insulating members 30.

Optionally, the electrode posts 40 are disposed on the cover plate 12, so as to avoid interference between the electrode posts 40 of adjacent cells 100 when the cells 100 are stacked, and an avoidance recess is disposed on a face of the cells 100 facing away from the electrode posts 40, where the avoidance recess is used for accommodating the electrode posts 40 of adjacent cells 100 when the cells 100 are stacked. The post 40 is provided at the end of the cover plate 12 in the longitudinal direction, and the recess is provided at the end of the case main body 11 in the longitudinal direction.

Since the case body 11 is provided with the escape recess at the end in the longitudinal direction, a thinned region is formed at the end of the battery 100 in the longitudinal direction, the battery cell body 21 is not provided in the thinned region, and the tab 22 extends from the battery cell body 21 to the thinned region. The insulation assembly 30 is arranged in the thinning area, the insulation assembly 30 supports the thinning area of the shell 10, and the problem that the thinning area of the shell 10 is easy to deform due to the thinness of the shell 10 is avoided.

The battery 100 provided by the embodiment of the disclosure includes a housing 10, a battery core 20 and an insulation assembly 30, the battery core 20 and the insulation assembly 30 are arranged in the housing 10, the insulation assembly 30 includes an insulation seat 31 and a retainer 32, the insulation seat 31 is connected with a cover plate 12 of the housing 10, the retainer 32 is arranged on one side of the insulation group far away from the cover plate 12, a tab 22 is at least partially positioned between the insulation seat 31 and the cover plate 12, insulation between the tab 22 and the housing 10 is realized, the risk of short circuit of the battery 100 is reduced, a first clamping structure 310 is arranged on the insulation seat 31, a second clamping structure 320 is arranged on the retainer 32, the first clamping structure 310 and the second clamping structure 320 are clamped, the disassembly is convenient, the production efficiency of the battery 100 is improved, a limit structure 33 is arranged on the insulation seat 31 or the retainer 32, and the relative positions of the insulation seat 31 and the retainer 32 can be limited, and interference is avoided.

The exemplary embodiments of the present disclosure also provide a battery device, as shown in fig. 6, including a battery 100. The battery includes: the battery pack comprises a shell 10, a battery cell 20 and an insulating assembly 30, wherein the shell 10 comprises a shell main body 11 and a cover plate 12, and the cover plate 12 is connected with the shell main body 11 to form a containing cavity; the battery cell 20 is arranged in the accommodating cavity, the battery cell 20 comprises a battery cell main body 21 and a tab 22, and the tab 22 is arranged at the end part of the battery cell main body 21; the insulation assembly 30 is arranged in the accommodating cavity, the insulation assembly 30 comprises an insulation seat 31 and a retainer 32, the insulation seat 31 is connected with the cover plate 12, the retainer 32 is arranged on one side, far away from the cover plate 12, of the insulation group, a first clamping structure 310 is arranged on the insulation seat 31, a second clamping structure 320 is arranged on the retainer 32, the first clamping structure 310 and the second clamping structure 320 are clamped, and the tab 22 is at least partially located between the insulation seat 31 and the retainer 32.

The battery device may be a battery pack, a battery module, a battery pack, or the like. The battery pack includes a plurality of sequentially arranged batteries 100, and when the plurality of batteries 100 are arranged, large surfaces of adjacent batteries 100 are opposed. The battery module may include a battery pack and end plates (end insulating plates) provided at ends of the battery pack in the arrangement direction of the batteries 100, the end plates being provided at both ends of the battery pack, respectively.

The battery pack may include a case 200 and a plurality of batteries 100, the case 200 including a base plate 210 and a structural beam 220, the structural beam 220 being connected to the base plate 210 to form one or more battery 100 compartments, the batteries 100 being disposed in the battery 100 compartments. The bottom plate 210 is used for supporting the battery 100, and the structural beams 220 are used for limiting the battery 100.

A plurality of stacked cells 100 may be provided in the battery 100 compartment, the large surfaces of adjacent cells 100 being opposite when the plurality of cells 100 are stacked, and the small surfaces of the cells 100 in the length direction being opposite to the bottom plate 210. The plurality of cells 100 in the battery 100 compartment may be electrically connected (in series or in parallel) by a bus bar that is provided on the side of the plurality of cells 100, and the bus bar is welded with the poles 40 of the cells 100.

The battery device provided by the embodiment of the disclosure includes a battery 100, in which an insulating seat 31 is connected with a cover plate 12 of a housing 10, a retainer 32 is arranged on one side of an insulating group away from the cover plate 12, a tab 22 is at least partially positioned between the insulating seat 31 and the cover plate 12, insulation between the tab 22 and the housing 10 is realized, the risk of short circuit of the battery 100 is reduced, a first clamping structure 310 is arranged on the insulating seat 31, a second clamping structure 320 is arranged on the retainer 32, and the first clamping structure 310 and the second clamping structure 320 are clamped, so that the battery device is convenient to disassemble and beneficial to improving the production efficiency of the battery 100.

The battery device provided by the embodiment of the disclosure can be applied to an electric vehicle, and when the battery device is used for the electric vehicle, the battery device can be a battery pack which is installed on the electric vehicle and provides energy for the electric vehicle.

In practice, the battery pack may be mounted to the frame of an electric vehicle. The battery pack can be fixedly connected with the frame. Or the battery pack can be a modularized battery pack which can be detachably connected to the vehicle body, so that the battery pack is convenient to replace.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (12)

1. A battery, the battery comprising:

the shell comprises a shell main body and a cover plate, wherein the cover plate is connected with the shell main body to form a containing cavity;

the battery cell is arranged in the accommodating cavity and comprises a battery cell main body and a tab, and the tab is arranged at the end part of the battery cell main body;

the insulation assembly is arranged in the accommodating cavity and comprises an insulation seat and a retainer, the insulation seat is connected with the cover plate, the retainer is arranged on one side, far away from the cover plate, of the insulation assembly, a first clamping structure is arranged on the insulation seat, a second clamping structure is arranged on the retainer, the first clamping structure and the second clamping structure are clamped, and the tab is at least partially positioned between the insulation seat and the retainer;

the insulation seat or the retainer is provided with a limiting structure, and the limiting structure is used for limiting the insulation seat and the retainer to generate relative displacement along the extending direction of the tab.

2. The battery of claim 1, wherein the insulating base comprises:

the seat body is provided with an accommodating recess, and the first clamping structure is arranged in the accommodating recess;

the retainer includes:

the frame body is arranged in the accommodating recess, and the second clamping structure is arranged at the position of the frame body opposite to the first clamping structure.

3. The battery of claim 2, wherein the first engaging structure is disposed on a side wall of the accommodating recess, and the second engaging structure is disposed on an end of the frame body facing the first engaging structure.

4. The battery of claim 3, wherein the first engagement structure comprises a first engagement protrusion provided on a side wall of the receiving recess;

the second clamping structure comprises:

one end of the second elastic arm is connected with the frame body;

the second clamping protrusion is arranged at one end of the second elastic arm far away from the frame body, and the second clamping protrusion is clamped with the first clamping protrusion.

5. The battery of claim 4, wherein the limiting structure comprises a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are connected to the first clamping protrusion, the first limiting portion and the second limiting portion are arranged along the extending direction of the tab, a space is reserved between the first limiting portion and the second limiting portion, and the second clamping protrusion is located between the first limiting portion and the second limiting portion.

6. The battery of claim 4, wherein the limiting structure comprises a first limiting portion, and the first limiting portion is disposed at one end of the first engaging protrusion, which is close to the battery cell main body, along the extending direction of the tab.

7. The battery of claim 4, wherein two second elastic arms are disposed on the frame body, the two second elastic arms are respectively located at two ends of the frame body along the length direction, and the tab is located between the two second elastic arms.

8. The battery of claim 2, wherein the first snap-in structure comprises:

one end of the first elastic arm is connected to the bottom of the accommodating recess;

the third clamping bulge is connected to one end, far away from the base body, of the first elastic arm;

the second clamping structure is a clamping hole on the frame body, the third clamping protrusion is clamped in the clamping hole, and the limiting structure is formed by the clamping hole.

9. The battery of claim 8, wherein two first elastic arms are disposed in the accommodating recess, the two first elastic arms are disposed at intervals along the length direction of the frame body, and the tab is located between the two first elastic arms.

10. The battery of any of claims 1-9, wherein the insulating mount abuts the cover plate.

11. The battery of any one of claims 1-9, wherein a gap is provided between the insulating base and the holder, and the tab extends into the gap.

12. A battery device, characterized in that it comprises a battery according to any one of claims 1-11.