CN219643001U - Battery cell - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a battery, which comprises: a support; the first battery cell is arranged on the first side of the support piece; the second battery cell is arranged on a second side of the support piece opposite to the first side; the first battery cell is isolated from the second battery cell through the supporting piece, and the first battery cell is electrically connected with the second battery cell through the supporting piece. The support piece is clamped between the first electric core and the second electric core, the support piece effectively supports the first electric core and the second electric core, the first electric core is isolated from the second electric core through the support piece, and the first electric core is electrically connected with the second electric core through the support piece, so that the electric connection of the first electric core and the second electric core is conveniently realized, the structure of the battery is simpler, the space utilization rate of the battery can be improved, and the service performance of the battery is effectively improved.

Description

Battery cell

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery.

Background

In the related art, when a plurality of batteries are electrically connected, the batteries are connected through a bus bar, the structure of the batteries is complex, and the space utilization rate of the batteries is low.

Disclosure of Invention

The utility model provides a battery, which is used for improving the service performance of the battery.

The present utility model provides a battery comprising:

a support;

the first battery cell is arranged on the first side of the support piece;

the second battery cell is arranged on a second side of the support piece opposite to the first side;

the first battery cell is isolated from the second battery cell through the supporting piece, and the first battery cell is electrically connected with the second battery cell through the supporting piece.

The battery comprises the support piece, the first battery cell and the second battery cell, wherein the first battery cell is arranged on the first side of the support piece, the second battery cell is arranged on the second side of the support piece opposite to the first side, namely, the support piece is clamped between the first battery cell and the second battery cell, the support piece effectively supports the first battery cell and the second battery cell, the first battery cell is isolated from the second battery cell through the support piece, and the first battery cell is electrically connected with the second battery cell through the support piece, so that the electric connection of the first battery cell and the second battery cell is conveniently realized, the structure of the battery is simpler, the space utilization rate of the battery can be improved, and the service performance of the battery is effectively improved.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views.

Wherein:

fig. 1 is a schematic view of a structure of a battery according to a first exemplary embodiment;

fig. 2 is a schematic structural view of a battery according to a second exemplary embodiment;

fig. 3 is a schematic view of a structure of a battery according to a third exemplary embodiment;

fig. 4 is an exploded structural view of a battery according to an exemplary embodiment.

The reference numerals are explained as follows:

10. a support; 11. a first plate body; 12. a second plate body; 20. a first cell; 21. a first cell body; 22. a first tab; 23. a second lug; 30. a second cell; 31. a second cell body; 32. a third ear; 33. a fourth ear; 40. a bracket; 50. an insulating frame; 60. and a third cell.

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.

An embodiment of the present utility model provides a battery, referring to fig. 1 to 4, the battery includes: a support member 10; the first battery cell 20 is arranged on the first side of the support piece 10; the second battery cell 30 is arranged on a second side of the support 10 opposite to the first side; the first battery cell 20 is isolated from the second battery cell 30 by the support member 10, and the first battery cell 20 is electrically connected with the second battery cell 30 by the support member 10.

The battery of the embodiment of the utility model comprises the support member 10, the first battery cell 20 and the second battery cell 30, wherein the first battery cell 20 is arranged on the first side of the support member 10, the second battery cell 30 is arranged on the second side of the support member 10 opposite to the first side, namely, the support member 10 is clamped between the first battery cell 20 and the second battery cell 30, the support member 10 effectively supports the first battery cell 20 and the second battery cell 30, the first battery cell 20 is isolated from the second battery cell 30 through the support member 10, and the first battery cell 20 is electrically connected with the second battery cell 30 through the support member 10, so that the electric connection of the first battery cell 20 and the second battery cell 30 is conveniently realized, the structure of the battery is simpler, the space utilization rate of the battery can be improved, and the service performance of the battery can be effectively improved.

It should be noted that, the first electric core 20 is disposed on the first side of the supporting member 10, the second electric core 30 is disposed on the second side of the supporting member 10 opposite to the first side, that is, two opposite large surfaces of the supporting member 10 may contact with the first electric core 20 and the second electric core 30 respectively, so that the supporting member 10 forms a support for the first electric core 20 and the second electric core 30, and the first electric core 20 and the second electric core 30 share one supporting member 10, so that the overall space occupation ratio is relatively smaller, and the overall space utilization ratio of the battery may be improved.

The first electric core 20 is electrically connected with the second electric core 30 through the supporting member 10, that is, the supporting member 10 can enable the first electric core 20 and the second electric core 30 to form electrical connection through the supporting member 10 on the basis of realizing supporting, so that the application range of the supporting member 10 is expanded, pole assemblies and buses used in the related art can be reduced, the use parts of the battery are simplified, and the energy density of the battery can be improved.

It should be noted that the support member 10 may have a rectangular structure.

In one embodiment, the first cell 20 may be connected in parallel with the second cell 30 through the support 10, for example, the positive tab of the first cell 20 is electrically connected with the support 10, and the positive tab of the second cell 30 is electrically connected with the support 10; alternatively, the negative tab of the first cell 20 is electrically connected to the support 10, and the negative tab of the second cell 30 is electrically connected to the support 10.

In one embodiment, the first cell 20 is connected in series with the second cell 30 through the support 10, for example, the positive tab of the first cell 20 is electrically connected to the support 10, and the negative tab of the second cell 30 is electrically connected to the support 10; alternatively, the negative tab of the first cell 20 is electrically connected to the support 10, and the positive tab of the second cell 30 is electrically connected to the support 10.

It should be noted that, if the battery includes only the first battery cell 20 and the second battery cell 30, the first battery cell 20 and the second battery cell 30 form an electrical connection through the support member 10, and the other tab of the first battery cell 20 and the other tab of the second battery cell 30 serve as electrode output terminals.

In one embodiment, the support 10 is a composite board, so that not only the electrical connection between the first battery cell 20 and the second battery cell 30 can be satisfied, but also the structural strength of the support 10 can be ensured, thereby improving the safety performance of the battery.

The support 10 may be a metal composite plate, for example, the support 10 may be a structure formed by combining a plurality of metal materials, or the support 10 may be a structure formed by combining a plurality of metal materials; the support 10 may be other conductive structures, for example, the support 10 may be a graphene structure, or the support 10 may be a composite structure of graphene and metal, etc., without limitation.

In one embodiment, as shown in fig. 1, the supporting member 10 includes a first plate 11 and a second plate 12, the first plate 11 is connected with the second plate 12, the first battery cell 20 is disposed on a side of the first plate 11 facing away from the second plate 12, and the second battery cell 30 is disposed on a side of the second plate 12 facing away from the first plate 11, and on the basis of ensuring that the first plate 11 and the second plate 12 are electrically connected with the first battery cell 20 and the second battery cell 30, the structural strength of the supporting member 10 can also be ensured, thereby improving the safe service performance of the battery.

The first plate 11 and the second plate 12 may be bonded, for example, the first plate 11 and the second plate 12 may be connected using conductive paste, or the first plate 11 and the second plate 12 may be connected using other paste, but the first plate 11 and the second plate 12 need to be electrically connected.

The first plate 11 and the second plate 12 may be welded, or the first plate 11 and the second plate 12 may be fastened, or the first plate 11 and the second plate 12 may be connected by using a fastener.

In one embodiment, the first plate 11 and the second plate 12 are respectively made of copper plate and aluminum plate, so that the first plate 11 and the second plate 12 can be ensured to be respectively used for connecting the first battery cell 20 and the second battery cell 30, and further, the first plate 11 and the second plate 12 can be ensured to be respectively used for connecting electrodes with different polarities of the first battery cell 20 and the second battery cell 30, thereby improving the connection strength.

The positive electrode tab and the negative electrode tab of the first battery cell 20 can be made of different materials, the positive electrode tab and the negative electrode tab of the second battery cell 30 can be made of different materials, and the first plate 11 and the second plate 12 are made of copper plates and aluminum plates respectively, so that the different materials of the positive electrode tab and the negative electrode tab can be adapted, and the first plate 11 and the second plate 12 can be ensured to be respectively used for stably connecting the first battery cell 20 and the second battery cell 30.

In one embodiment, the first cell 20 is a first stacked cell and the second cell 30 is a second stacked cell. The laminated battery cell is convenient to group and can be processed to obtain a battery cell with longer length. Specifically, the battery cell is provided with a first pole piece, a second pole piece and a diaphragm, wherein the first pole piece, the second pole piece and the diaphragm are mutually laminated, the second pole piece is opposite to the first pole piece, and the diaphragm is 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 a laminated battery cell.

The first battery cell 20 is a first laminated battery cell, the first laminated battery cell can be laminated on the support member 10, the second battery cell 30 is a second laminated battery cell, and the second laminated battery cell can be laminated on the support member 10.

In one embodiment, the first battery cell 20 is a first winding type battery cell, and the second battery cell 30 is a second winding type battery cell, that is, the first electrode sheet, the second electrode sheet opposite to the first electrode sheet, and the diaphragm sheet disposed between the first electrode sheet and the second electrode sheet are wound to obtain the winding type battery cell.

It should be noted that, the first battery cell 20 is a square battery cell, and the second battery cell 30 is a square battery cell.

In one embodiment, as shown in fig. 1, the first battery cell 20 includes a first battery cell main body 21, a first tab 22 and a second tab 23, the first tab 22 and the second tab 23 with opposite polarities extend from the first battery cell main body 21, and the first tab 22 is converged towards the first side of the support member 10 to be electrically connected with the support member 10, so that not only the electrical connection between the first battery cell 20 and the support member 10 can be ensured, but also the connection stability between the first battery cell 20 and the support member 10 can be ensured, and thus the safety and stability performance of the first battery cell 20 and the support member 10 can be improved.

The second battery cell 30 includes a second battery cell main body 31, a third ear 32 and a fourth ear 33, the third ear 32 and the fourth ear 33 with opposite polarities extend from the second battery cell main body 31, the third ear 32 is convergent towards the second side of the support member 10 to be electrically connected with the support member 10, so that not only the electrical connection between the second battery cell 30 and the support member 10 can be ensured, but also the connection stability between the second battery cell 30 and the support member 10 can be ensured, and the safety and stability performance of the second battery cell 30 and the support member 10 can be improved.

The first tab 22 and the second tab 23 may each include a plurality of single-piece tabs, and the plurality of single-piece tabs of the first tab 22 may be bundled toward the first side of the support 10 to ensure electrical connection of the first tab 22 with the support 10, e.g., the first tab 22 may be welded with the support 10.

The third tab 32 and the fourth tab 33 may each comprise a plurality of single-piece tabs, and the plurality of single-piece tabs of the third tab 32 may converge toward the second side of the support 10 to ensure that the third tab 32 is electrically connected to the support 10, e.g., the third tab 32 may be soldered to the support 10.

As shown in fig. 4, the first battery cell 20 includes a first battery cell main body 21, a first tab 22 and a second tab 23, the second battery cell 30 includes a second battery cell main body 31, a third tab 32 and a fourth tab 33, and the first plate 11 and the second plate 12 may be respectively close to the first battery cell main body 21 and the second battery cell main body 31, so that the first battery cell 20 and the second battery cell 30 may be conveniently electrically connected through the first plate 11 and the second plate 12 of the support 10.

In one embodiment, as shown in fig. 1, the two opposite sides of the first electric core 20 are both provided with the supporting members 10, and the second electrode lug 23 is converged towards the other supporting member 10 and electrically connected with the other supporting member, so that the supporting members 10 on the two opposite sides of the first electric core 20 are respectively used as the two electrode reference ends of the first electric core 20, which not only has a simple structure and higher space utilization rate, but also can improve the stability of the first electric core 20.

The two opposite sides of the second electric core 30 are respectively provided with the supporting pieces 10, the fourth lugs 33 converge towards the other supporting piece 10 and are electrically connected with the supporting pieces, so that the supporting pieces 10 on the two opposite sides of the second electric core 30 are respectively used as two electrode reference ends of the second electric core 30, the structure is simple, the space utilization rate is high, and the stability of the second electric core 30 can be improved.

The first and second cells 20 and 30 are electrically connected by three supports 10, and two of the supports 10 serve as electrode lead-out terminals of the first and second cells 20 and 30, thereby facilitating electrical connection with other cells.

In one embodiment, as shown in fig. 1 to 3, the battery further includes a third battery cell 60, and the third battery cell 60 is disposed on a side of the support member 10 facing away from the first battery cell 20, and/or the third battery cell 60 is disposed on a side of the support member 10 facing away from the second battery cell 30, so that the capacity of the battery can be increased to adapt to the energy requirement of the battery.

It should be noted that the battery may further include a plurality of battery cells, where the plurality of battery cells includes a first battery cell 20, a second battery cell 30, and a third battery cell 60. The support member 10 can be clamped between two adjacent battery cells, so that the plurality of battery cells can be electrically connected through the plurality of support members 10, for example, the plurality of battery cells can be connected in series through the plurality of support members 10, for example, the outermost side of the battery can be provided with the two support members 10, the two support members 10 form the final electrode leading-out end of the battery, at this time, the battery is similar to a battery module in the related art, the battery module in the related art is formed by stacking a plurality of battery cells, and the battery in the embodiment is formed by stacking the plurality of battery cells.

In one embodiment, as shown in fig. 1, the first tab 22 and the second tab 23 extend from opposite sides of the first cell body 21; the third tab 32 and the fourth tab 33 extend from opposite sides of the second cell body 31, so that electrical connection between the first cell 20 and the second cell 30 can be conveniently realized, and the first tab 22 and the second tab 23 can be ensured to have relatively large widths, and accordingly, the third tab 32 and the fourth tab 33 can be ensured to have relatively large widths, thereby ensuring overcurrent capabilities of the first cell 20 and the second cell 30.

In one embodiment, the first tab 22 and the second tab 23 may extend from the same side of the first cell body 21; the third tab 32 and the fourth tab 33 extend from the same side of the second battery cell main body 31, so that the occupied space of the tab can be reduced, and the energy density of the battery can be improved.

In one embodiment, as shown in fig. 2, the battery further includes a cradle 40.

At least one end of the first battery cell main body 21 is provided with a support 40, the first tab 22 is located between the support 40 and the support member 10, and/or the second tab 23 is located between the support 40 and the support member 10, and the arrangement of the support 40 not only can improve the structural stability of the battery, but also can ensure that the first tab 22 and/or the second tab 23 can be stably connected to the support member 10, thereby improving the connection stability of the first battery cell 20.

Accordingly, at least one end of the second battery cell main body 31 is provided with a support 40, the third tab 32 is located between the support 40 and the support 10, and/or the fourth tab 33 is located between the support 40 and the support 10, and the arrangement of the support 40 not only can improve the structural stability of the battery, but also can ensure that the third tab 32 and/or the fourth tab 33 can be stably connected to the support 10, thereby improving the connection stability of the first battery cell 20.

The support 40 may include an insulating structure to avoid the adjacent two support members 10 from being electrically connected through the support 40, for example, the support 40 may be a plastic member, or the support 40 may be a rubber member, or the like.

In one embodiment, as shown in fig. 2 and 3, the battery further includes an insulating frame 50, and the insulating frame 50 is disposed around the circumferential outer edge of the support member 10 to be fixedly connected with the support member 10, so that a fixed protection for the circumferential outer side of the battery can be formed, the safety performance of the battery is improved, and the safety problem of the battery during the use process is avoided.

The insulating frame 50 is fixedly connected with the supporting piece 10, the insulating frame 50 and the supporting piece 10 can be clamped, for example, the insulating frame 50 can be provided with a groove, and the supporting piece 10 is clamped in the groove; alternatively, the insulating frame 50 and the support 10 may be bonded; alternatively, the insulating frame 50 and the support 10 may be thermally fused; alternatively, the insulating frame 50 and the support 10 may be welded; alternatively, the insulating frame 50 and the support 10 may be connected using fasteners, for example, screws may pass through the insulating frame 50 and the support 10 to connect the insulating frame 50 and the support 10.

The battery may include the first, second and third battery cells 20, 30 and 60, at this time, the number of the supporting members 10 may be four, the four supporting members 10 achieve the electrical connection of the first, second and third battery cells 20, 30 and 60, and two of the supporting members 10 serve as electrode outlets, and the insulating frame 50 may be disposed around the circumferential outer edges of the supporting members 10, thereby forming an insulating protection for the circumferential outer edges of the first, second and third battery cells 20, 30 and 60, thereby ensuring good insulating properties of the first, second and third battery cells 20, 30 and 60, and the outermost two supporting members 10 may serve as charging and discharging ends.

Of course, the battery may include more than three electric cores, the insulating frame 50 forms an insulating protection for the electric cores, and the arrangement and the electrical connection of the electric cores are not described in detail, which are similar to the arrangement and the electrical connection of the three electric cores.

In one embodiment, the height of the insulating frame 50 is not less than the thickness of the support 10 in a direction perpendicular to the support 10, so that the insulating frame 50 can form effective insulation protection for the support 10, improving the safety performance of the battery.

As shown in fig. 3, the insulating frame 50 may be provided in plurality, and the plurality of insulating frames 50 may be combined to form an insulating protection for the multi-cell, thereby improving the safety performance of the cell, and the plurality of insulating frames 50 may be installed easily. Alternatively, the insulating frame 50 may be one, one insulating frame 50 forming an insulating protection for the multi-cell.

The insulating frame 50 may be a plastic member, or the insulating frame 50 may be a rubber member, or the insulating frame 50 may be a conductive member having an insulating coating, or the like.

The insulating frame 50 and the support 10 may form a seal against the inside of the cell, whereby the injection of electrolyte inside the cell is possible, although it is not excluded that the cell may employ solid active substances.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model 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. The specification and example embodiments are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (14)

1. A battery, comprising:

a support (10);

a first cell (20), the first cell (20) being arranged on a first side of the support (10);

the second battery cell (30) is arranged on a second side of the support (10) opposite to the first side, and the first side and the second side are two opposite large surfaces of the support (10);

the first battery cell (20) is isolated from the second battery cell (30) through the supporting piece (10), and the first battery cell (20) is electrically connected with the second battery cell (30) through the supporting piece (10).

2. The battery according to claim 1, characterized in that the first cell (20) is connected in series with the second cell (30) through the support (10).

3. The battery according to claim 1 or 2, characterized in that the support (10) is a composite plate.

4. A battery according to claim 3, wherein the support member (10) comprises a first plate body (11) and a second plate body (12), the first plate body (11) and the second plate body (12) are connected, the first electric core (20) is arranged on one side of the first plate body (11) facing away from the second plate body (12), and the second electric core (30) is arranged on one side of the second plate body (12) facing away from the first plate body (11).

5. The battery according to claim 4, wherein the first plate body (11) and the second plate body (12) are a copper plate and an aluminum plate, respectively.

6. The battery according to claim 1 or 2, wherein the first cell (20) is a first laminated cell and the second cell (30) is a second laminated cell.

7. The battery according to claim 1 or 2, characterized in that the first cell (20) comprises a first cell body (21), a first tab (22) and a second tab (23), the first tab (22) and the second tab (23) of opposite polarity extending from the first cell body (21), the first tab (22) converging towards a first side of the support (10) for electrical connection with the support (10);

the second battery cell (30) comprises a second battery cell main body (31), a third electrode lug (32) and a fourth electrode lug (33), the third electrode lug (32) and the fourth electrode lug (33) with opposite polarities extend out from the second battery cell main body (31), and the third electrode lug (32) is converged towards the second side of the supporting piece (10) so as to be electrically connected with the supporting piece (10).

8. The battery according to claim 7, characterized in that said support (10) is provided on opposite sides of said first cell (20), said second tab (23) converging towards and being electrically connected to the other of said supports (10);

the opposite sides of the second battery cell (30) are provided with the supporting pieces (10), and the fourth electrode lugs (33) converge towards the other supporting piece (10) and are electrically connected with the other supporting piece.

9. The battery according to claim 8, characterized in that the battery further comprises a third cell (60), the third cell (60) being provided on the side of the support (10) facing away from the first cell (20) and/or the third cell (60) being provided on the side of the support (10) facing away from the second cell (30).

10. The battery according to claim 7, wherein the first tab (22) and the second tab (23) extend from opposite sides of the first cell body (21);

the third tab (32) and the fourth tab (33) extend from opposite sides of the second cell body (31).

11. The battery according to claim 7, characterized in that it further comprises a bracket (40);

at least one end of the first cell main body (21) is provided with the bracket (40), the first tab (22) is positioned between the bracket (40) and the support (10), and/or the second tab (23) is positioned between the bracket (40) and the support (10);

at least one end of the second cell body (31) is provided with the bracket (40), the third electrode lug (32) is positioned between the bracket (40) and the support (10), and/or the fourth electrode lug (33) is positioned between the bracket (40) and the support (10).

12. The battery according to claim 1 or 2, further comprising an insulating frame (50), the insulating frame (50) being arranged around the circumferential outer edge of the support (10) for a fixed connection with the support (10).

13. The battery according to claim 12, wherein the height of the insulating frame (50) is not less than the thickness of the support (10) in a direction perpendicular to the support (10).

14. The battery according to claim 1 or 2, characterized in that the opposite two large surfaces of the support (10) are in contact with the large surfaces of the first cell (20) and the second cell (30), respectively.