CN218996995U

CN218996995U - Battery structure

Info

Publication number: CN218996995U
Application number: CN202223610237.0U
Authority: CN
Inventors: 吴诵东; 谭友斌; 尹小强
Original assignee: BYD Co Ltd; Shanghai BYD Co Ltd
Current assignee: BYD Co Ltd; Shanghai BYD Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-09
Anticipated expiration: 2032-12-30

Abstract

The present disclosure relates to a battery structure comprising a housing configured to be open on one side and a pole core assembly shape-fittingly disposed within the housing, wherein the pole core assembly comprises: the pole core body is provided with a pole lug; the filling member is provided with a cavity for placing the pole core body, and a notch for extending out of the pole lug is formed on the side edge of the filling member; and a cover plate assembly covering a side of the filling member at the opening of the housing. Therefore, the battery structure can adjust the size of the cavity of the filling member along with the change of the size of the pole core, so that the pole core body can be adapted to the inner space of the shell, and the battery structure has the advantage of flexible adaptation. Therefore, the battery structure can be adapted to the pole cores of various specifications without changing the appearance structure, so that the re-die opening is avoided, and the cost is increased.

Description

Battery structure

Technical Field

The present disclosure relates to the field of battery technology, and in particular, to a battery structure.

Background

In the general case of battery technology field, a cell corresponds to a cell housing, but in practical battery production, a set of cell housing structure often needs to correspond to multiple specifications of cells, and the cells are different in size and form. When the battery core with smaller size needs to be replaced, if the battery core is directly replaced on the premise of not changing the shell, the mechanical properties (falling and vibration) of the battery core can not meet the requirements certainly; if the shell structure is changed, the mould opening evaluation is required to be carried out again, so that the production cost is obviously increased, and the production benefit is greatly reduced.

Disclosure of Invention

It is an object of the present disclosure to provide a battery structure to at least partially solve the problems existing in the related art.

In order to achieve the above object, the present disclosure provides a battery structure including a case configured to be open on one side and a pole core assembly shape-fittingly disposed in the case, wherein the pole core assembly includes:

the pole core body is provided with a pole lug;

the filling member is provided with a cavity for placing the pole core body, and a notch for extending out of the pole lug is formed on the side edge of the filling member; and

and the cover plate component is covered on the side edge of the filling member, which is positioned at the opening of the shell.

Optionally, the pole core body has two the utmost point ear, the apron subassembly includes apron body and two connect respectively the tab of apron body both ends, every the tab is connected with the position is corresponding respectively.

Optionally, the cover body is flush with the opening of the housing.

Optionally, at least one side edge of the filling member is provided with an outwardly protruding reinforcing structure.

Optionally, the reinforcing structures are formed at two ends of the filling member and at the side edges of the filling member, which are close to the opening of the shell, the reinforcing structures at the left end and the right end of the filling member are respectively propped against the inner side walls of the shell, and the cover plate assembly covers the reinforcing structures of the side edges of the filling member, which are close to the opening of the shell.

Optionally, the reinforcing structure comprises a reinforcing plate extending along a side of the filler member in a direction away from the cavity, the reinforcing plate being arranged perpendicular to the side of the filler member.

Optionally, the opening part that keeps away from of the left and right sides both ends of packing member is equipped with a plurality of interval arrangement the reinforcing plate, a plurality of the reinforcing plate keep away from the one end of cavity is connected with the connecting plate, the connecting plate with the reinforcing plate is arranged perpendicularly, and with the lateral wall butt of casing.

Optionally, the left end and the right end of the filling member are respectively formed with one notch, and/or the side edge of the filling member, which is close to the opening of the shell, is formed with two notches which are arranged at intervals.

Optionally, the battery structure further comprises spacers covered on the left and right ends of the filling member.

Optionally, the spacer is bonded to the filler member by a first fixing tape.

Optionally, the filling member comprises a first filling member having a front side opening to form the cavity.

Optionally, the pole core body is fixed into the cavity by a second fixing adhesive tape.

Optionally, the filling member includes a second filling member and a third filling member disposed opposite to each other in front and rear, the second filling member and the third filling member having openings facing each other, respectively, and the cavity is formed by the second filling member and the third filling member butted in the front and rear direction.

Optionally, the second filling member and the third filling member are connected by a clamping structure.

Optionally, the filling member includes a fourth filling member and a fifth filling member disposed opposite to each other in a left-right direction, the fourth filling member and the fifth filling member having openings facing each other, respectively, and the cavity is formed by the fourth filling member and the fifth filling member butted in the left-right direction.

Through above-mentioned technical scheme, this battery structure can be along with the cavity size of the change and the adjustment of pole core size filling member to make the interior space that the pole core body can adapt to the casing, have the advantage of nimble adaptation. Under the condition that the external dimension of the shell is unchanged and the dimension of the internal pole core body is reduced, each part of the battery structure can be smoothly installed by arranging the filling member, and various mechanical properties can be satisfied. Therefore, the battery structure can be adapted to the pole cores of various specifications without changing the appearance structure, so that the re-die opening is avoided, and the cost is increased.

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

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a schematic structural view of a battery structure provided in a first exemplary embodiment of the present disclosure;

fig. 2 is a split schematic diagram of a battery structure provided in a first exemplary embodiment of the present disclosure;

fig. 3 is a second split schematic view of a battery structure provided in a first exemplary embodiment of the present disclosure;

fig. 4 is a split schematic diagram III of a battery structure provided by a first exemplary embodiment of the present disclosure;

fig. 5 is a split schematic diagram fourth of a battery structure provided by a first exemplary embodiment of the present disclosure;

fig. 6 is a split schematic diagram five of a battery structure provided by a first exemplary embodiment of the present disclosure;

fig. 7 is a split schematic diagram sixth of a battery structure provided by the first exemplary embodiment of the present disclosure;

fig. 8 is a split schematic diagram seven of a battery structure provided by the first exemplary embodiment of the present disclosure;

fig. 9 is a schematic view of a structure of a pole core body in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 10 is a schematic view of a connection between a pole core body and a filling member in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 11 is a schematic diagram of a second structure of a pole core body in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 12 is a second schematic structural view of a connection between a pole core body and a filling member in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 13 is a schematic view of a third structure of a pole core body in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 14 is a schematic view III of a connection between a pole core body and a filling member in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 15 is a schematic structural view of a pole core body in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 16 is a schematic view showing a structure in which a pole core body is connected to a filling member in a battery structure according to an exemplary embodiment of the present disclosure;

fig. 17 is a split schematic view of a battery structure provided by a second exemplary embodiment of the present disclosure;

fig. 18 is a split schematic view of a battery structure provided in a third exemplary embodiment of the present disclosure.

Description of the reference numerals

1 casing 2 pole core assembly

21 filling member 210 gap

211. First filling member 212 second filling member

213. Third filling member 214 fourth filling member

215 fifth filler member 22 cover plate assembly

221 cover plate body 222 leading-out sheet

23 pole core body 231 pole lug

24 spacer 3 reinforced structure

31 reinforcing plate 32 connecting plate

41 first fixing tape 42 second fixing tape

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise stated, the terms "upper", "lower", "top" and "bottom" are defined based on the directions in which the relevant components are actually used, and the terms "front-rear direction" and "left-right direction" are defined based on the directions of the drawings, referring to the directions represented by the arrows in fig. 8. The terms "inner" and "outer" are used with respect to the outline of the corresponding component, and furthermore, the terms "first", "second", etc. are used in this disclosure to distinguish one element from another without order or importance. In the present disclosure, when the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated.

Referring to fig. 1 to 18, the present disclosure provides a battery structure that may include a case 1 configured to be open on one side and a pole core assembly 2 shape-fittingly disposed within the case 1, wherein the pole core assembly 2 may include: a pole core body 23, a filling member 21 and a cover plate assembly 22, wherein the pole core body 23 is provided with a pole lug 231; the filling member 21 is formed with a cavity for placing the pole core body 23, and a notch 210 for extending the pole lug 231 is formed at the side edge of the filling member 21, wherein the side wall of the filling member 21 can be attached to or close to the inner wall of the shell 1; the cover plate assembly 22 is provided to cover the side of the filling member 21 at the opening of the housing 1. The dimensions of the cavity of the filling member 21 may be adaptively adjusted according to the size of the dimensions of the pole core body 23.

Referring to fig. 8, the core body 23 has two tabs 231, and the cover assembly 22 may include a cover body 221 and two lead-out pieces 222 respectively connected to two ends of the cover body 221, where each lead-out piece 222 is respectively connected to a tab 231 corresponding to a position. Specifically, the two tabs 231 of the pole core body 23 may be welded to the two lead-out tabs 222 of the cap plate assembly 22 using an ultrasonic welding technique.

Further, referring to fig. 1, the cover plate body 221 is flush with the opening of the housing 1 so that the pole core assembly 2 is adapted to the size of the housing 1. Specifically, the battery structure is obtained by putting the pole core assembly 2 into the case 1 after assembling, and then welding the cap plate body 221 and the case 1 together using laser welding.

As an exemplary embodiment of the present disclosure, referring to fig. 8, at least one side of the filling member 21 is provided with a reinforcing structure 3 protruding outward to enable an increase in structural strength of the filling member 21, and the shape of the reinforcing structure 3 is not particularly limited herein.

Specifically, as shown in fig. 8, the reinforcing structures 3 may be formed at the left and right ends of the filling member 21 and the side edges of the filling member 21 near the opening of the housing 1, the reinforcing structures 3 at the left and right ends of the filling member 21 respectively abut against the inner side walls of the housing 1, and the cover plate assembly 22 is covered on the reinforcing structures 3 of the side edges of the filling member 21 near the opening of the housing 1, so that the size of the cavity of the filling member 21 can be adjusted by changing the size of the reinforcing structures 3, that is, the size of the cavity of the filling member 21 can be reduced by increasing the size of the reinforcing structures 3, so as to adapt to the pole core bodies 23 with different sizes.

Further, referring to fig. 10, the reinforcing structure 3 may include a reinforcing plate 31 extending along the side of the filling member 21 in a direction away from the cavity, the reinforcing plate 31 being disposed perpendicularly to the side of the filling member 21, an end of the reinforcing plate 31 away from the cavity being adapted to abut against the housing 1.

Still further, referring to fig. 10, the openings of the left and right ends of the filling member 21 far from the housing 1 are provided with a plurality of reinforcing plates 31 arranged at intervals, one ends of the plurality of reinforcing plates 31 far from the cavity are connected with a connecting plate 32, the connecting plate 32 is vertically arranged with the reinforcing plates 31 and is abutted against the side wall of the housing 1, so that the stability and strength of the position of the pole core assembly 2 far from the opening of the housing 1 can be enhanced, and the influence on the structural strength of the position due to the fact that the reinforcing structure 3 is not arranged on one side of the filling member 21 far from the opening of the housing 1 is avoided.

In some embodiments, the left and right ends of the filling member 21 are respectively formed with one notch 210, and/or the side of the filling member 21 near the opening of the housing 1 is formed with two notches 210 arranged at intervals, so as to be able to adapt to a plurality of different types of pole core assemblies 2. Specifically, the same filling member 21 may be adapted to a plurality of different types of pole core assemblies 2, for example, as shown in fig. 9 and 10, laminated pole cores with protruding opposite ends of pole lugs are adopted, and two pole lugs are respectively placed at the notches 210 at two ends of the filling member 21; as shown in fig. 11 and 12, a winding pole core with protruding pole lug opposite ends is adopted, and two pole lugs are respectively arranged at notches 210 at two ends of a filling member 21; as shown in fig. 13 and 14, laminated pole cores led out from the same ends of pole lugs are adopted, and two pole lugs are respectively arranged at two notches 210 on the side edge of the filling member 21; as shown in fig. 15 and 16, a winding core is used, which is led out from the same end of each tab, and two tabs are respectively placed at two notches 210 on the side edge of the filling member 21. In addition, the same type of pole piece assembly 2 may also be fitted using a plurality of different forms of filler members 21.

Specifically, referring to fig. 5, the battery structure may further include spacers 24 covered at both left and right ends of the filling member 21. Specifically, the spacers 24 may be provided to cover the reinforcing structures 3 at both the left and right ends of the filler member 21.

Referring to fig. 4, the spacer 24 and the filling member 21 may be adhered by the first fixing adhesive tape 41, and the connection form of the spacer 24 and the filling member 21 is not limited to the above case, and falls within the protection scope of the present disclosure. .

According to one embodiment, referring to fig. 8, the filling member 21 may include a first filling member 211, the first filling member 211 having a front side opening to form a cavity in which the pole core body 23 can be placed.

Further, the pole core body 23 may be fixed in the cavity by the second fixing adhesive tape 42, and the pole core body 23 may also be fixed in the cavity by means of bolts, nuts, or clamping.

In some other embodiments, referring to fig. 17, the filling member 21 may include a second filling member 212 and a third filling member 213 disposed opposite front and rear, the second filling member 212 and the third filling member 213 having openings toward each other, respectively, and the cavity is formed by the second filling member 212 and the third filling member 213 abutting in the front-rear direction. Specifically, the second filling member 212 and the third filling member 213 have the same thickness.

Further, the second filling member 212 and the third filling member 213 may be connected by a fastening structure, or may be connected by bolting, bonding, or the like.

In still other embodiments, referring to fig. 18, the filling member 21 may include fourth and fifth filling

members

214 and 215 disposed opposite left and right, the fourth and fifth filling

members

214 and 215 having openings toward each other, respectively, and the cavity is formed by the fourth and fifth filling

members

214 and 215 abutting in the left and right direction. In this embodiment, the left and right ends of the filling member 21 can enclose the tab 231 of the core body 23 in the cavity without providing the space ring 24.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims

1. A battery structure comprising a case configured to be open on one side and a pole core assembly shape-fittingly disposed in the case, wherein the pole core assembly comprises:

the pole core body is provided with a pole lug;

2. The battery structure according to claim 1, wherein the electrode core body has two electrode lugs, the cover plate assembly comprises a cover plate body and two lead-out pieces respectively connected to two ends of the cover plate body, and each lead-out piece is respectively connected to the electrode lug corresponding to the position.

3. The battery structure of claim 2, wherein the cover body is flush with the opening of the housing.

4. The battery structure of claim 1, wherein at least one side of the filler member is provided with an outwardly protruding reinforcing structure.

5. The battery structure according to claim 4, wherein the reinforcing structures are formed at both left and right ends of the filling member and at sides of the filling member near the opening of the case, the reinforcing structures at both ends of the filling member are respectively abutted against inner side walls of the case, and the cap assembly is capped on the reinforcing structures of the sides of the filling member near the opening of the case.

6. The battery structure of claim 5, wherein the reinforcing structure includes a reinforcing plate extending along a side of the filler member in a direction away from the cavity, the reinforcing plate being disposed perpendicular to the side of the filler member.

7. The battery structure according to claim 6, wherein a plurality of reinforcing plates are arranged at openings of left and right ends of the filling member, which are far away from the housing, and one ends of the plurality of reinforcing plates, which are far away from the cavity, are connected with a connecting plate, which is arranged perpendicularly to the reinforcing plates and is abutted against a side wall of the housing.

8. The battery structure according to claim 1, wherein the filling member is formed with one of the notches at both left and right ends thereof, respectively, and/or the filling member is formed with two of the notches arranged at a spacing at a side edge thereof near the opening of the case.

9. The battery structure according to claim 1, further comprising spacers provided at both left and right ends of the filling member.

10. The battery structure of claim 9, wherein the spacer ring is bonded to the filler member by a first fixing tape.

11. The battery structure of any one of claims 1-10, wherein the filler member comprises a first filler member having a front side opening to form the cavity.

12. The battery structure of claim 11, wherein the pole core body is secured within the cavity by a second securing tape.

13. The battery structure according to any one of claims 1 to 10, wherein the filling member includes a second filling member and a third filling member disposed in front-rear opposition, the second filling member and the third filling member having openings toward each other, respectively, and the cavity is formed by the second filling member and the third filling member butted in the front-rear direction.

14. The battery structure of claim 13, wherein the second filler member and the third filler member are connected by a snap-fit structure.

15. The battery structure according to any one of claims 1 to 10, wherein the filling member includes a fourth filling member and a fifth filling member disposed opposite to each other in the left-right direction, the fourth filling member and the fifth filling member having openings facing each other, respectively, and the cavity is formed by the fourth filling member and the fifth filling member butted in the left-right direction.