CN219801076U - Battery and battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and a battery device, wherein the battery comprises a shell, a battery core assembly, a cover plate assembly and an insulating film, at least one side of the shell is opened, the battery core assembly is accommodated in the shell, the battery core assembly comprises a battery core body, the cover plate assembly is arranged at the opening of the shell, the cover plate assembly is provided with a pole assembly, a groove is formed in one side of the cover plate assembly, which faces the battery core assembly, the pole assembly is exposed at the bottom of the groove, the pole assembly is connected with a pole lug of the battery core assembly through a transfer sheet, a first part of the transfer sheet is accommodated in the groove and is connected with the pole assembly, a gap is reserved between at least one side edge of the first part and a groove wall of the groove, the insulating film is arranged between the cover plate assembly and the battery core assembly, a part of the insulating film is arranged between the bottom of the groove and the first part, the insulating film is provided with a through hole, and the through hole corresponds to the pole assembly.

Description

Battery and battery device

Technical Field

The present utility model relates to the field of battery technologies, and in particular, to a battery and a battery device.

Background

In the design scheme of the existing battery, a groove is formed in one side, facing the battery core assembly, of the cover plate assembly, the adapter piece is partially contained in the groove and is connected with the pole assembly, when an insulating film is arranged between the cover plate assembly and the adapter, the bending angle between the part, located between the adapter and the groove bottom, of the groove and the part, located on the bottom of the cover plate assembly is overlarge, so that the insulating film is easy to break at the bending position, and insulation failure is caused.

Disclosure of Invention

It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery with improved insulation properties.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a battery, including a housing, a battery cell assembly, a cover plate assembly and an insulating film, wherein at least one side of the housing is opened, the battery cell assembly is accommodated in the housing, the battery cell assembly includes a battery cell body, the cover plate assembly is disposed at the opening of the housing, the cover plate assembly is provided with a post assembly, a groove is provided on a side of the cover plate assembly facing the battery cell assembly, the post assembly is exposed at a bottom of the groove, the post assembly is connected with a tab of the battery cell body via a transfer tab, a first portion of the transfer tab is accommodated in the groove and is connected with the post assembly, a gap is provided between at least one side of the first portion and a wall of a corresponding side of the groove, the insulating film is disposed between the cover plate assembly and the battery cell assembly, a portion of the insulating film is disposed between the bottom of the groove and the first portion, and the insulating film is provided with a through hole, and the through hole corresponds to the post assembly.

According to the technical scheme, the battery provided by the utility model has the advantages and positive effects that:

the battery provided by the utility model comprises a cover plate component and a battery cell component, wherein an insulating film is arranged between the cover plate component and the battery cell component, a groove is formed in one side of the cover plate component facing the battery cell component, a first part of a switching sheet is accommodated in the groove and connected with a pole column component, and a gap is formed between only one side edge of the first part and the groove wall of the corresponding side of the groove. Through the structural design, the gap between the first part of the switching piece and the groove wall of the groove can be utilized, so that the overlarge bending angle of at least one bending part of the insulating film is avoided, the insulating film is prevented from being broken due to overlarge bending angle, and the insulating effect of the battery is improved.

Another main object of the present utility model is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device employing the above-mentioned battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to another aspect of the present utility model, there is provided a battery device, wherein the battery device includes the battery.

As can be seen from the above technical solutions, the battery device provided by the present utility model has the following advantages and positive effects:

the battery device provided by the utility model can improve the insulation effect of the battery by adopting the battery provided by the utility model.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

fig. 1 is a schematic perspective view of a battery according to an exemplary embodiment;

fig. 2 is an exploded perspective view of the battery shown in fig. 1;

fig. 3 is a schematic perspective view of a part of the structure of the battery shown in fig. 1;

FIG. 4 is a bottom view of FIG. 3;

fig. 5 is a schematic cross-sectional view of the battery shown in fig. 1;

FIG. 6 is an enlarged schematic view of portion A of FIG. 5;

fig. 7 and 8 are partial cross-sectional views of a battery according to other two exemplary embodiments, respectively.

The reference numerals are explained as follows:

100. a housing;

210. a cell body;

2101. a side surface;

220. a transfer sheet;

221. a first section;

222. a second section;

223. bending and chamfering structure;

300. a cover plate assembly;

301. a groove;

3011. a groove wall;

310. a pole assembly;

400. an insulating film;

401. a through hole;

500. an insulating member;

x. first direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.

In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

Referring to fig. 1, a schematic perspective view of a battery according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery proposed by the present utility model is described as being applied to a vehicle-mounted battery as an example. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of battery devices, and such changes are still within the principles of the battery presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery according to the present utility model includes a case 100, a cell assembly, a cap plate assembly 300, and an insulating film 400. Referring to fig. 2 to 6 in combination, an exploded perspective view of the battery is representatively illustrated in fig. 2, in which the exploded structure of the cap plate assembly 300, the insulating film 400 and the cell assembly is specifically illustrated; a schematic perspective view of a partial structure of the battery is representatively illustrated in fig. 3, in which a combined structure of the cap plate assembly 300, the insulating film 400 and the adapter plate 220 is specifically illustrated; the bottom view of fig. 3 is representatively illustrated in fig. 4; a schematic cross-sectional view of the battery is representatively illustrated in fig. 5; an enlarged schematic of section a of fig. 5 is representatively illustrated in fig. 6. The structure, connection mode and functional relationship of the main components of the battery according to the present utility model will be described in detail with reference to the above drawings.

As shown in fig. 1 to 6, in an embodiment of the utility model, at least one side of the housing 100 is opened, the battery cell assembly is accommodated in the housing 100, the battery cell assembly includes a battery cell body 210, the cover assembly 300 is disposed at the opening of the housing 100, and the cover assembly 300 is provided with a post assembly 310. The surface of the cover assembly 300 facing the battery cell assembly is provided with a groove 301, and the pole assembly 310 is exposed at the bottom of the groove 301. The pole assembly 310 is connected to the tab of the battery cell body 210 via the switching piece 220, and the first portion 221 of the switching piece 220 is received in the groove 301 and is connected to the pole assembly 310, and a gap is formed between at least one side of the first portion 221 and a corresponding side groove wall of the groove 301. The insulating film 400 is disposed between the cover plate assembly 300 and the battery cell assembly, a portion of the insulating film 400 is disposed between the bottom of the recess 301 and the first portion 221 of the adaptor 220, the insulating film 400 is provided with a through hole 401, and the through hole 401 corresponds to the post assembly 310, so that the post assembly 310 and the adaptor 220 are connected through the through hole 401. Through the above structural design, the utility model can utilize the gap between the first portion 221 of the switching piece 220 and the groove wall of the groove 301 to avoid the overlarge bending angle of at least one bending position of the insulating film 400, thereby avoiding the insulating film 400 from being broken due to overlarge bending angle and improving the insulating effect of the battery.

It should be noted that the embodiment shown in fig. 1 and 2 is described by taking the example that the battery includes a cover assembly 300, at least one side of the case 100 is opened, for example, but not limited to, a top opening. In some embodiments, the battery may also include two cover assemblies 300, for example, the two cover assemblies 300 may be disposed on two opposite sides of the battery, where two opposite sides of the housing 100 are respectively opened, and positive and negative tabs of the battery cell body 210 are respectively led out from two sides and respectively connected to the post assemblies 310 on the two cover assemblies 300, which is not limited in this embodiment.

As shown in fig. 3 to 6, in an embodiment of the utility model, the adaptor 220 may further include a second portion 222, where the second portion 222 is connected to the first portion 221, and the second portion 222 is connected to the tab of the cell body 210. On this basis, a side surface of the cover plate assembly 300 facing the battery cell assembly is taken as a reference surface, on which the orthographic projections of the groove 301 and the first portion 221 may be respectively rectangular, and one side edge of the first portion 221 is connected with the second portion 222. On this basis, there may be gaps between the remaining three sides of the first portion 221 and the corresponding three side walls of the groove 301, respectively. Through the structural design, the utility model can further avoid overlarge bending angles of each bending part of the insulating film 400, thereby avoiding the insulating film 400 from being broken due to overlarge bending angles and further improving the insulating effect of the battery.

As shown in fig. 2 to 6, based on the structural design that the switching piece 220 includes the first portion 221 and the second portion 222, in an embodiment of the utility model, the tab may be disposed on the side 2101 of the cell body 210, in other words, the cell body 210 may adopt a "tab-out" structural design, according to which the first portion 221 and the second portion 222 of the switching piece 220 are bent and connected, and the second portion 222 is disposed on the side 2101 of the cell body 210 and connected to the tab.

As shown in fig. 6, based on the cell body 210, a "tab-out" structure design may be adopted, and in an embodiment of the utility model, a connection portion between the first portion 221 and the second portion 222 of the adaptor tab 220 may have a bent chamfer structure 223, and the bent chamfer structure 223 abuts against a corresponding side slot wall 3011 of the slot 301.

Referring to fig. 7, a partial cross-sectional view of a battery capable of embodying the principles of the present utility model is representatively illustrated in fig. 7 in another exemplary embodiment.

As shown in fig. 7, still taking a structural design with a bending chamfer structure 223 at the connection between the first portion 221 and the second portion 222 of the adaptor tab 220 as an example, in an embodiment of the utility model, an insulating member 500 may be disposed between the bending chamfer structure and the cell body 210. Through the structural design, the insulation effect between the bending chamfer structure 223 and the battery core body 210 can be optimized, and the insulation performance of the battery is further improved.

Referring to fig. 8, a partial cross-sectional view of a battery capable of embodying the principles of the present utility model is representatively illustrated in fig. 8 in another exemplary embodiment.

As shown in fig. 8, in an embodiment of the present utility model, the wall of the groove 301 may be a chamfer structure, and in particular, the chamfer structure may be, for example, but not limited to, a rounded corner structure as shown in the drawings. Through the structural design, the utility model can avoid the connection part between the part of the insulating film 400 at the bottom of the groove 301 and the part at the bottom of the cover plate assembly 300 from being scratched by the groove wall with sharp shape, and simultaneously further avoid the problem of stress concentration at the connection part of the insulating film 400 by utilizing the chamfer structure, thereby further ensuring the insulating performance of the battery.

Taking the structure design taking the groove wall of the groove 301 as a chamfer structure as an example, the embodiment shown in fig. 8 is described taking the bending chamfer structure 223 of the switching piece 220 abutting against the corresponding side groove wall 3011 of the groove 301 as an example, according to the utility model, the groove wall 3011 with the chamfer structure can be utilized to avoid scratching the switching piece 220, thereby ensuring the effective connection between the pole component 310 and the pole lug through the switching piece 220 and further ensuring the electrical performance of the battery. In some embodiments, even if the bending chamfer 223 of the turning piece 220 is not abutted against the corresponding side groove wall 3011 of the groove 301, for example, in the embodiments shown in fig. 6 and 7, the groove wall of the groove 301 may be a chamfer, which is not limited to the above embodiments.

As shown in fig. 1 to 4, in an embodiment of the present utility model, the battery cell body 210 may have two tabs that are spaced apart along the first direction X. Moreover, the cover plate assembly 300 may be provided with two pole assemblies 310, and one side of the cover plate assembly 300 facing the battery cell assembly may be provided with two grooves 301, where the two grooves 301 are arranged at intervals along the first direction X, and the two pole assemblies 310 are respectively exposed at bottoms of the two grooves 301. On this basis, the battery according to the present utility model may include two tabs 220, and the two tabs 220 are respectively connected between the two tabs and the two post assemblies 310. Through the above structural design, the utility model can respectively realize the connection of the positive electrode lug and the negative electrode lug of the battery cell assembly and the positive electrode assembly and the negative electrode assembly of the cover plate assembly 300 by utilizing the two adapter plates 220.

As shown in fig. 1 to 4, based on the structural design that the battery cell body 210 has two tabs, in an embodiment of the present utility model, the two tabs may be respectively disposed on two side surfaces 2101 of the battery cell body 210 along the first direction X. In some embodiments, two tabs may be disposed on other surfaces of the battery cell body 210, such as, but not limited to, the two tabs being disposed on the top surface of the battery cell body 210 (i.e., the surface facing the cover assembly 300), which is not limited to the present embodiment.

It should be noted herein that the batteries shown in the drawings and described in this specification are only a few examples of the wide variety of batteries that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery shown in the drawings or described in this specification.

In summary, the battery provided by the present utility model includes a cover assembly 300 and a battery cell assembly, an insulating film 400 is disposed between the cover assembly 300 and the battery cell assembly, a groove 301 is formed on a side of the cover assembly 300 facing the battery cell assembly, a first portion 221 of the adapter plate 220 is received in the groove 301 and is connected to the post assembly 310, and a gap is formed between only one side of the first portion 221 and a corresponding side groove wall of the groove 301. Through the above structural design, the utility model can utilize the gap between the first portion 221 of the switching piece 220 and the groove wall of the groove 301 to avoid the overlarge bending angle of at least one bending position of the insulating film 400, thereby avoiding the insulating film 400 from being broken due to overlarge bending angle and further improving the insulating effect of the battery.

Based on the above detailed description of several exemplary embodiments of the battery set forth in the present utility model, an exemplary embodiment of the battery device set forth in the present utility model will be described below.

In one embodiment of the present utility model, the battery device according to the present utility model includes the battery according to the present utility model and described in detail in the above embodiment.

It should be noted herein that the battery devices shown in the drawings and described in this specification are only a few examples of the wide variety of battery devices that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery device shown in the drawings or described in this specification.

In summary, the battery device provided by the utility model can improve the insulation effect of the battery by adopting the battery provided by the utility model.

Exemplary embodiments of the battery and the battery device according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.

While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims (9)

1. The utility model provides a battery, its characterized in that includes casing, electric core subassembly, apron subassembly and insulating film, at least one side opening of casing, electric core subassembly hold in the casing, electric core subassembly includes the electric core body, apron subassembly set up in the opening part of casing, apron subassembly is provided with the utmost point post subassembly, the apron subassembly orientation one side of electric core subassembly has seted up flutedly, utmost point post subassembly expose in the tank bottom of recess, utmost point post subassembly with the utmost point ear of electric core body is connected through the changeover tab, the first portion of changeover tab hold in the recess and connect in utmost point post subassembly, at least one side of first portion with have the clearance between the corresponding one side cell wall of recess, the insulating film set up in between the apron subassembly with the electric core subassembly, part the insulating film set up in between the tank bottom of recess and the first portion, the through-hole has been seted up to the insulating film, the through-hole corresponds to utmost point post subassembly.

2. The battery of claim 1, wherein the tab further comprises a second portion, the second portion being coupled to the first portion, the second portion being coupled to the tab; wherein, the surface of one side of the cover plate component facing the battery cell component is taken as a reference surface, on the reference surface, the orthographic projection of the groove and the first part are respectively rectangular, one side edge of the first part is connected with the second part, and gaps are respectively reserved between the other three side edges of the first part and the corresponding three side groove walls of the groove.

3. The battery according to claim 2, wherein the tab is disposed on a side surface of the cell body, the first portion and the second portion of the switching piece are connected in a bent manner, and the second portion is disposed on a side surface of the cell body and connected to the tab.

4. The battery of claim 3, wherein the junction of the first portion and the second portion has a bent chamfer structure that abuts a corresponding one side groove wall of the groove.

5. The battery of claim 4, wherein an insulator is disposed between the bent chamfer structure and the cell body.

6. The battery of claim 1, wherein the walls of the grooves are chamfered.

7. The battery according to claim 1, wherein the battery core body is provided with two tabs, the two tabs are arranged at intervals along a first direction, the cover plate assembly is provided with two pole assemblies, two grooves are formed in one side, facing the battery core assembly, of the cover plate assembly, the two grooves are arranged at intervals along the first direction, the two pole assemblies are respectively exposed to bottoms of the two grooves, the battery comprises two transfer pieces, and the two transfer pieces are respectively connected between the two tabs and the two pole assemblies.

8. The battery of claim 7, wherein two of the tabs are disposed on two sides of the cell body along the first direction, respectively.

9. A battery device comprising the battery according to any one of claims 1 to 8.