CN216720228U

CN216720228U - Switching piece, battery and group battery

Info

Publication number: CN216720228U
Application number: CN202220269500.5U
Authority: CN
Inventors: 周勇; 王娟; 卢永强
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-06-10
Anticipated expiration: 2032-02-10

Abstract

The utility model relates to the technical field of batteries, and provides an adapter plate, a battery and a battery pack. The switching piece is used for connecting utmost point post terminal and utmost point ear, and the switching piece includes: the first connecting part is used for connecting the pole terminal; the second connecting part is connected to the first end of the first connecting part; the third connecting part is connected to a second end, opposite to the first end, of the first connecting part, and at least one of the second connecting part and the third connecting part is used for connecting a tab; the second connecting portion extends in the direction away from the second end, and the third connecting portion extends in the direction away from the first end. The adapter sheet has relatively more functions, and can expand the application range, thereby improving the performance of the adapter sheet.

Description

Switching piece, battery and group battery

Technical Field

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

Background

In the related art, the interposer of the battery is used to connect the tab and the post terminal. The problem that the connection of the switching piece and the pole lug is unstable and the overcurrent capacity is low easily occurs or the problem that the function of the switching piece is single is solved due to the limitation of the specific structure of the switching piece.

SUMMERY OF THE UTILITY MODEL

The utility model provides an adapter sheet, a battery and a battery pack, which aim to improve the performance of the adapter sheet.

According to a first aspect of the present invention, there is provided an interposer for connecting a pole terminal and a pole tab, the interposer comprising:

the first connecting part is used for connecting the pole terminal;

the second connecting part is connected to the first end of the first connecting part;

the third connecting part is connected to a second end, opposite to the first end, of the first connecting part, and at least one of the second connecting part and the third connecting part is used for connecting a tab;

the second connecting portion extends in the direction away from the second end, and the third connecting portion extends in the direction away from the first end.

The adapter sheet comprises a first connecting part, a second connecting part and a third connecting part, wherein a first end and a second end of the first connecting part, which are opposite to each other, are respectively connected with the second connecting part and the third connecting part, the first connecting part is used for connecting a pole terminal, when the second connecting part and the third connecting part are simultaneously used for connecting a pole lug, the connection stability of the pole lug and the adapter sheet can be improved, the overcurrent capacity of the adapter sheet can be improved, and when one of the second connecting part and the third connecting part is connected with the pole lug, the other one of the second connecting part and the third connecting part can be used for stopping electrolyte flowing in the process of injecting liquid, so that the electrolyte is prevented from directly impacting the cell main body.

According to a second aspect of the present invention, there is provided a battery comprising the above interposer.

The embodiment of the utility model provides a battery which comprises an adapter sheet, wherein the adapter sheet comprises a first connecting part, a second connecting part and a third connecting part, the first end and the second end, which are opposite, of the first connecting part are respectively connected with the second connecting part and the third connecting part, the first connecting part is connected with a pole terminal, when the second connecting part and the third connecting part are simultaneously connected with a pole lug, the connection stability of the pole lug and the adapter sheet can be increased, the overcurrent capacity of the adapter sheet can be increased, and when one of the second connecting part and the third connecting part is connected with the pole lug, the other one of the second connecting part and the third connecting part can be used for stopping electrolyte flowing in during electrolyte injection, so that the electrolyte is prevented from directly impacting a battery core main body.

According to a third aspect of the present invention, there is provided a battery pack comprising the battery described above.

The embodiment of the utility model provides a battery pack which comprises a battery, wherein an adapter sheet of the battery comprises a first connecting part, a second connecting part and a third connecting part, the first end and the second end, which are opposite to each other, of the first connecting part are respectively connected with the second connecting part and the third connecting part, the first connecting part is connected with a pole terminal, when the second connecting part and the third connecting part are simultaneously connected with a pole lug, the connection stability of the pole lug and the adapter sheet can be increased, the overcurrent capacity of the adapter sheet can be increased, and when one of the second connecting part and the third connecting part is connected with the pole lug, the other one of the second connecting part and the third connecting part can be used for stopping electrolyte flowing in during liquid injection, so that the electrolyte is prevented from directly impacting a battery core main body.

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 be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

FIG. 1 is a schematic diagram illustrating a partial structure of a battery according to an exemplary embodiment;

fig. 2 is a schematic diagram illustrating a cell structure of a battery according to an exemplary embodiment;

FIG. 3 is a schematic diagram illustrating a construction of an interposer for a battery according to one exemplary embodiment;

FIG. 4 is a schematic diagram of a battery according to an exemplary embodiment;

fig. 5 is a schematic diagram illustrating a structure of a battery according to another exemplary embodiment.

The reference numerals are explained below:

1. a pole terminal; 2. a tab; 3. an electric core; 4. a cell main body; 5. a battery case; 6. a liquid injection hole; 10. a first connection portion; 20. a second connecting portion; 30. a third connecting portion; 40. a first transition portion; 50. a second transfer part; 60. and a fusing part.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the 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, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the" object or "an" object are also intended to mean one of possibly multiple such objects.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the present invention provides an interposer, please refer to fig. 1 to 3, the interposer is used for connecting a terminal 1 and a tab 2, and the interposer includes: a first connection part 10, wherein the first connection part 10 is used for connecting the pole terminal 1; a second connection part 20, the second connection part 20 being connected to a first end of the first connection part 10; a third connection part 30, the third connection part 30 being connected to a second end of the first connection part 10 opposite to the first end, at least one of the second connection part 20 and the third connection part 30 being used for connecting the tab 2; wherein the second connecting portion 20 extends in a direction away from the second end and the third connecting portion 30 extends in a direction away from the first end.

The interposer according to one embodiment of the present invention includes a first connection portion 10, a second connection portion 20, and a third connection portion 30, wherein a first end and a second end of the first connection portion 10 opposite to each other are respectively connected to the second connection portion 20 and the third connection portion 30, the first connection portion 10 is used for connecting the terminal 1, when the second connection portion 20 and the third connection portion 30 are simultaneously used for connecting the tab 2, connection stability of the tab 2 and the interposer can be increased, and an overcurrent capability of the interposer can be increased, and when one of the second connection portion 20 and the third connection portion 30 is connected to the tab 2, the other one of the second connection portion 20 and the third connection portion 30 can be used for stopping an electrolyte flowing in during electrolyte injection, so as to avoid the electrolyte from directly impacting the cell main body.

It should be noted that, when the tab 2 is connected by the second connecting portion 20 and the third connecting portion 30, not only the connection stability between the tab 2 and the adaptor piece and the overcurrent capacity of the adaptor piece can be increased, but also the tab 2 with a longer length does not need to be processed, so that the molding efficiency of the battery cell is improved, and one end of the tab can be prevented from being in a free state and being inserted into the battery cell. When the tab 2 is connected to the second connection portion 20 and the third connection portion 30 at the same time, at least one of the second connection portion 20 and the third connection portion 30 may be used to stop the electrolyte flowing in during injection.

In one embodiment, at least a portion of the second connection part 20 has a height difference from the first connection part 10, so that the tab 2 can be prevented from being coupled to the first connection part 10. When the adapter sheet is used for a battery, a gap is formed between the second connecting portion 20 and the battery shell, so that an auxiliary supporting structure can be accommodated in the gap, for example, the auxiliary supporting structure can be a positioning plate, and in the process of connecting the second connecting portion 20 and the tab, the positioning plate can prevent the battery shell from deforming due to stress, for example, in the process of welding the second connecting portion 20 and the tab, the positioning plate can prevent the battery shell from deforming due to stress. The second connection part 20 may form a gap with a cap plate of a battery case, and the second connection part 20 and the tab may be welded by ultrasonic welding, laser welding, or the like.

In one embodiment, at least a portion of the third connection part 30 has a height difference from the first connection part 10, so that the tab 2 can be prevented from being coupled to the first connection part 10. When the adapter sheet is used for a battery, a gap can be formed between the third connecting portion 30 and the battery shell, so that an auxiliary supporting structure can be accommodated in the gap, for example, the auxiliary supporting structure can be a positioning plate, and in the process of connecting the third connecting portion 30 and a tab, the positioning plate can prevent the battery shell from deforming due to stress, for example, in the process of welding the third connecting portion 30 and the tab, the positioning plate can prevent the battery shell from deforming due to stress. The second connection part 20 may form a gap with the cap plate of the battery case, and the third connection part 30 and the tab may be welded by ultrasonic welding, laser welding, or the like.

In one embodiment, at least a portion of the second connection part 20 has a height difference from the first connection part 10, at least a portion of the third connection part 30 has a height difference from the first connection part 10, and at least a portion of the second connection part 20 is located above the first connection part 10, and at least a portion of the third connection part 30 is located below the first connection part 10, at which time, it is difficult for the tab 2 to simultaneously connect the second connection part 20 and the third connection part 30, but one of the second connection part 20 and the third connection part 30 may be used to stop the electrolyte flowing in during injection.

In one embodiment, at least a portion of the second connection part 20 has a height difference from the first connection part 10, at least a portion of the third connection part 30 has a height difference from the first connection part 10, and at least a portion of the second connection part 20 and at least a portion of the third connection part 30 may be simultaneously located above or below the first connection part 10, at which time, the tab 2 may simultaneously connect the second connection part 20 and the third connection part 30.

In some embodiments, the sides of the second and third connecting

portions

20 and 30 facing away from the first connecting portion 10 are flush, so that the second and third connecting

portions

20 and 30 can be conveniently connected to the tab 2 at the same time.

In some embodiments, when at least part of the second connection portion 20 and at least part of the third connection portion 30 can be located above or below the first connection portion 10 at the same time, it is not excluded that the sides of the second connection portion 20 and the third connection portion 30 facing away from the first connection portion 10 are not flush.

It should be noted that, the second connection portion 20 and the third connection portion 30 are away from the first connection portion 10, that is, the second connection portion 20 and the third connection portion 30 are toward the battery cell, because at least a portion of the second connection portion 20 has a height difference with the first connection portion 10, and at least a portion of the third connection portion 30 has a height difference with the first connection portion 10, at this time, a side of the first vertical distance between the second connection portion 20 and the first connection portion 10 of the second connection portion 20 and the third connection portion 30 is a side of the second connection portion 20 and the third connection portion 30 away from the first connection portion 10, and another side of the second vertical distance between the second connection portion 20 and the first connection portion 10 of the third connection portion 30 is a side of the second connection portion 20 and the third connection portion 30 close to the first connection portion 10, where the first vertical distance is greater than the second vertical distance.

In one embodiment, the first connection portion 10 may be a flat plate, and the second connection portion 20 may be a first bending plate, so that a portion of the second connection portion 20 may have a height difference from the first connection portion 10. The third connecting portion 30 may be a second bending plate, so that a portion of the third connecting portion 30 may have a height difference from the first connecting portion 10.

In one embodiment, as shown in fig. 1 and 3, the interposer further includes: a first junction 40, the first junction 40 connecting the first connection 10 and the second connection 20; the second adapter portion 50 is connected to the first connection portion 10 and the third connection portion 30, so that the second connection portion 20 and the first connection portion 10 have a height difference, and the third connection portion 30 and the first connection portion 10 have a height difference, thereby preventing the tab 2 from contacting the first connection portion 10.

In one embodiment, the first transfer portion 40 is substantially perpendicular to the first connection portion 10, and the first transfer portion 40 is substantially perpendicular to the second connection portion 20, so that a height difference between the first connection portion 10 and the second connection portion 20 is increased, and a distance between the second connection portion 20 and the battery case may be increased when the interposer is connected to the battery.

In one embodiment, the second adaptor portion 50 is substantially perpendicular to the first connecting portion 10, and the second adaptor portion 50 is substantially perpendicular to the third connecting portion 30, so that the height difference between the first connecting portion 10 and the third connecting portion 30 is increased, and the distance between the third connecting portion 30 and the battery case can be increased when the adaptor sheet is connected to the battery.

It should be noted that the battery case may include a cover plate, and the gap between the second connecting portion 20 and the cover plate may be used to accommodate a welding seat structure during tab welding, so as to receive stress during welding and avoid deformation of the cover plate due to direct pressing of the welding force on the cover plate. Correspondingly, the gap between the third connecting portion 30 and the cover plate can be used for accommodating a welding seat structure during tab welding, and is used for bearing stress during welding, so that the cover plate is prevented from being deformed due to the fact that the force during welding is directly pressed on the cover plate. The battery case 5 as shown in fig. 1 is a cover plate.

In some embodiments, the first connection portion 10 and the second connection portion 20 may be substantially parallel, and the first transfer portion 40 may be disposed obliquely to the first connection portion 10. The first connection portion 10 and the third connection portion 30 may be substantially parallel, and the second adapter portion 50 may be disposed obliquely to the first connection portion 10.

In some embodiments, it is not excluded that at least one of the third connection portion 30 and the second connection portion 20 is disposed non-parallel to the first connection portion 10.

It should be noted that the above-mentioned connection method is basically formed by neglecting the problems of manufacturing error or mounting deformation.

In one embodiment, the adapter sheet is of an integrally formed structure, so that the stability of the structure can be improved, and the forming efficiency of the adapter sheet can be improved.

In some embodiments, it is not excluded that at least one of the first connection portion 10, the second connection portion 20, the third connection portion 30, the first adapter portion 40 and the second adapter portion 50 is a separately formed structure, and is connected after forming.

In one embodiment, as shown in fig. 1 and 3, the interposer further includes at least one fusing part 60, so that when the current on the interposer reaches a certain height, the fusing part 60 can break the electrical connection between the post terminal 1 and the tab 2, thereby ensuring safety.

In some embodiments, a fusing part 60 is disposed between the first connection part 10 and the second connection part 20, and a fusing part 60 is disposed between the first connection part 10 and the third connection part 30.

In one embodiment, when the tab 2 connects the third connection portion 30 and the second connection portion 20 at the same time, at least two fusing portions 60 may be disposed on the interposer, so that when the current on the interposer reaches a certain height, the first connection portion 10 is electrically disconnected from the second connection portion 20, and the first connection portion 10 is electrically disconnected from the third connection portion 30.

It should be noted that the fusing part 60 may be disposed on the first connection part 10, or the fusing part 60 may be disposed on at least one of the first adapter part 40 and the second adapter part 50. The fusing part 60 may be formed by forming a through hole on at least one of the first connection part 10, the first transfer part 40 and the second transfer part 50, so as to form the fusing part 60, and of course, the fusing part 60 may be in other structural forms in the related art, which is not limited herein.

An embodiment of the present invention further provides a battery, including the above interposer.

An embodiment of the present invention provides a battery including an interposer, where the interposer includes a first connection portion 10, a second connection portion 20, and a third connection portion 30, a first end and a second end of the first connection portion 10 opposite to each other are respectively connected to the second connection portion 20 and the third connection portion 30, the first connection portion 10 is connected to a terminal 1, when the second connection portion 20 and the third connection portion 30 are simultaneously connected to a tab 2, connection stability of the tab 2 and the interposer can be increased, and an overcurrent capability of the interposer can be increased, and when one of the second connection portion 20 and the third connection portion 30 is connected to the tab 2, the other one can be used for stopping an electrolyte flowing in during electrolyte injection, so as to prevent the electrolyte from directly impacting a battery cell main body.

The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

In one embodiment, as shown in fig. 4, the battery further includes: the pole terminal 1 is connected with the first connecting part 10; electric core 3, electric core 3 include electric core main part 4 and utmost point ear 2, and utmost point ear 2 extends out along one side of electric core main part 4, and utmost point ear 2 is connected simultaneously to second connecting portion 20 and third connecting portion 30 to guarantee utmost point ear 2's connection stability, and can improve the ability of overflowing.

In one embodiment, as shown in fig. 5, the battery further includes: the pole terminal 1 is connected with the first connecting part 10; the battery cell 3 comprises a battery cell main body 4 and a tab 2, the tab 2 extends out along one side of the battery cell main body 4, and the second connecting part 20 is connected with the tab 2; the battery shell 5, the battery shell 5 has liquid injection hole 6; the third connecting portion 30 extends to a position right below the injection hole 6, so that the electrolyte flowing in during injection can be stopped, and the electrolyte is prevented from directly impacting the cell main body 4.

In one embodiment, the second connecting portion 20 and the first connecting portion 10 have no height difference, and the third connecting portion 30 and the first connecting portion 10 have no height difference, that is, the interposer may be a flat plate, the flat plate first connecting portion 10 is connected to the post terminal 1, the flat plate second connecting portion 20 is connected to the tab 2, and the flat plate third connecting portion 30 may extend to a position right below the injection hole 6.

It should be noted that the third connecting portion 30 extends to a position right below the liquid pouring hole 6, that is, the third connecting portion 30 is directly opposite to at least a portion of the liquid pouring hole 6, so that the electrolyte injected from the liquid pouring hole 6 directly impacts the third connecting portion 30, thereby reducing the flow rate of the electrolyte, and changing the flow direction of the electrolyte, thereby avoiding the active material coated on the cell main body 4 from being washed away or causing damage to the cell main body 4.

In one embodiment, the battery further comprises: a gap is formed between the battery case 5, at least one of the second connecting portion 20 and the third connecting portion 30, and the battery case 5 for accommodating an auxiliary support structure, so that the positioning plate can prevent the battery case from being deformed due to stress during the connection process of at least one of the second connecting portion 20 and the third connecting portion 30 with the tab 2.

The auxiliary supporting structure can be a positioning plate, and in the process of connecting the second connecting portion 20 with the tab, the positioning plate can avoid the problem that the battery shell is stressed and deformed, for example, in the process of welding the second connecting portion 20 with the tab, the positioning plate can avoid the deformation of the battery shell. The second connection part 20 may form a gap with a cap plate of a battery case, and the second connection part 20 and the tab may be welded by ultrasonic welding, laser welding, or the like.

In the process of connecting the third connecting portion 30 with the tab, the positioning plate can prevent the battery case from deforming due to stress, for example, in the process of welding the third connecting portion 30 with the tab, the positioning plate can prevent the battery case from deforming due to stress. The second connection part 20 may form a gap with the cap plate of the battery case, and the third connection part 30 and the tab may be welded by ultrasonic welding, laser welding, or the like.

In one embodiment, the battery cell 3 includes two tabs 2, one tab 2 may extend along a first side of the battery cell body 4, and the other tab 2 may extend along a second side of the battery cell body 4, at this time, the number of the terminal posts 1 is also two, and the two terminal posts 1 are respectively electrically connected to the two tabs 2. In this case, one pair of the pole terminals 1 and the tabs 2 may be connected by the above-mentioned adapter sheet, and the other pair of the pole terminals 1 and the tabs 2 may also be connected by the above-mentioned adapter sheet, but it is not excluded that the other pair of the pole terminals 1 and the tabs 2 are connected by an adapter sheet of another configuration. The two pole terminals 1 may be located on the same side of the cell body 4, or the two pole terminals 1 may be located on opposite sides of the cell body 4, which is not limited herein. For example, the battery case 5 may include two cover plates, and one post terminal 1 is provided on each cover plate, in which case the two cover plates are disposed opposite to each other. One of two utmost point ears 2 is anodal utmost point ear, and another is the negative pole utmost point ear, and one of two utmost point post terminals 1 is anodal utmost point post terminal, and another is the negative pole utmost point post terminal, and the structure of anodal utmost point post terminal and negative pole utmost point post terminal can be consistent mutually, or the structure of anodal utmost point post terminal and negative pole utmost point post terminal can be inconsistent, does not limit here.

An embodiment of the utility model also provides a battery pack comprising the battery.

One embodiment of the present invention provides a battery pack including a battery, an interposer of the battery including a first connection portion 10, a second connection portion 20, and a third connection portion 30, opposite first and second ends of the first connection portion 10 being connected to the second and

third connection portions

20 and 30, respectively, the first connection portion 10 being connected to a post terminal 1, when the second connection part 20 and the third connection part 30 are simultaneously connected with the tab 2, the connection stability of the tab 2 and the adaptor sheet can be increased, and the overcurrent capacity of the interposer can be increased, and when one of the second connection portion 20 and the third connection portion 30 is connected to the tab 2, the other electrolyte can be used for stopping the electrolyte flowing in during liquid injection, so that the electrolyte is prevented from directly impacting the cell main body, therefore, the adaptor sheet in the embodiment has relatively more functions, and the application range can be expanded, so that the performance of the battery pack is improved.

In one embodiment, the battery pack is a battery module or a battery pack.

The battery module includes a plurality of batteries, and the battery module may further include an end plate and a side plate for fixing the plurality of batteries.

The battery pack includes a plurality of batteries and a case for fixing the plurality of batteries.

It should be noted that, the battery pack includes a plurality of batteries, and a plurality of batteries are disposed in the box body. Wherein, a plurality of batteries can form and install in the box behind the battery module, and at this moment, the battery module can be including the end plate and the curb plate of fixed a plurality of batteries. Or, a plurality of batteries can directly set up in the box, need not to carry out in groups a plurality of batteries promptly, utilize the box to fix a plurality of batteries, at this moment, can get rid of end plate and curb plate.

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. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

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

Claims

1. The utility model provides an adaptor piece, its characterized in that for connect utmost point post terminal (1) and utmost point ear (2), the adaptor piece includes:

a first connection portion (10), the first connection portion (10) being used for connecting the pole terminal (1);

a second connection portion (20), the second connection portion (20) being connected to a first end of the first connection portion (10);

a third connection part (30), the third connection part (30) being connected to a second end of the first connection part (10) opposite to the first end, at least one of the second connection part (20) and the third connection part (30) being used for connecting the tab (2);

wherein the second connection portion (20) extends in a direction away from the second end and the third connection portion (30) extends in a direction away from the first end.

2. Interposer according to claim 1, characterized in that at least part of the second connection portion (20) has a height difference with the first connection portion (10); and/or the presence of a gas in the atmosphere,

at least a part of the third connection portion (30) has a height difference from the first connection portion (10).

3. Patch according to claim 2, characterized in that the sides of the second connection portion (20) and the third connection portion (30) facing away from the first connection portion (10) are level.

4. The interposer as recited in claim 2 or 3, further comprising:

a first transition portion (40), the first transition portion (40) connecting the first connection portion (10) and the second connection portion (20);

a second adapter portion (50), the second adapter portion (50) connecting the first connection portion (10) and the third connection portion (30).

5. The interposer as recited in claim 4, wherein the first transition portion (40) is substantially perpendicular to the first connection portion (10), the first transition portion (40) being substantially perpendicular to the second connection portion (20); and/or the presence of a gas in the gas,

the second transition portion (50) is substantially perpendicular to the first connection portion (10), and the second transition portion (50) is substantially perpendicular to the third connection portion (30).

6. The interposer as recited in any one of claims 1 to 3, wherein the interposer is of unitary construction.

7. An interposer as claimed in any one of claims 1 to 3, wherein the interposer further comprises at least one fuse portion (60).

8. A battery comprising the interposer of any one of claims 1-7.

9. The battery of claim 8, further comprising:

a pole terminal (1), the first connection part (10) being connected to the pole terminal (1);

electric core (3), electric core (3) are including electric core main part (4) and utmost point ear (2), utmost point ear (2) are followed one side of electric core main part (4) extends out, second connecting portion (20) with third connecting portion (30) are connected simultaneously utmost point ear (2).

10. The battery of claim 8, further comprising:

the battery cell (3) comprises a battery cell main body (4) and a lug (2), the lug (2) extends out along one side of the battery cell main body (4), and the second connecting part (20) is connected with the lug (2);

the battery comprises a battery shell (5), wherein the battery shell (5) is provided with a liquid injection hole (6);

wherein the third connecting part (30) extends to the position right below the liquid injection hole (6).

11. The battery of claim 8, further comprising:

a battery case (5), and a gap is formed between at least one of the second connection portion (20) and the third connection portion (30) and the battery case (5) for accommodating an auxiliary support structure.

12. A battery pack characterized by comprising the battery of any one of claims 8 to 11.