CN216597902U

CN216597902U - Switching piece, battery and group battery

Info

Publication number: CN216597902U
Application number: CN202220075008.4U
Authority: CN
Inventors: 许久凌; 张璐璐
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-05-24
Anticipated expiration: 2032-01-12

Abstract

The utility model relates to a battery technology field provides a switching piece, battery and group battery. The switching piece is used for connecting utmost point ear and utmost point post subassembly, and the switching piece includes: the tab connecting part is used for being connected with the tab part; the pole connecting part is used for being connected with the pole assembly; and the two ends of the switching part are respectively connected with the tab connecting part and the pole connecting part, and the orthographic projection of the tab connecting part on the plane of the pole connecting part is at least partially superposed with the pole connecting part. By utmost point ear connecting portion at least part and utmost point post connecting portion coincidence mutually on the plane of utmost point post connecting portion, not only can make things convenient for the switching piece to connect utmost point ear portion and utmost point post subassembly, and the switching piece can make full use of battery inner space to this performance that improves the switching piece.

Description

Switching piece, battery and group battery

Technical Field

The utility model relates to a battery technology field especially relates to a switching piece, battery and group battery.

Background

In the correlation technique, the switching piece is used for realizing the switching between utmost point ear portion and utmost point post subassembly, nevertheless because the restriction of switching piece structure, the switching piece not only welds inconveniently, and the space occupation ratio is great.

SUMMERY OF THE UTILITY MODEL

The utility model provides a switching piece, battery and group battery to improve the performance of switching piece.

According to the utility model discloses a first aspect provides an adaptor piece for connect utmost point ear portion and utmost point post subassembly, the adaptor piece includes:

the tab connecting part is used for being connected with the tab part;

the pole connecting part is used for being connected with the pole assembly;

the two ends of the switching part are respectively connected with the lug connecting part and the pole connecting part, and the orthographic projection of the lug connecting part on the plane where the pole connecting part is located is at least partially overlapped with the pole connecting part.

The utility model discloses the switching piece includes utmost point ear connecting portion, utmost point post connecting portion and switching portion, utmost point ear connecting portion and utmost point post connecting portion are connected respectively to the both ends of switching portion, thereby can make things convenient for utmost point ear and utmost point post connecting portion to connect utmost point ear and utmost point post subassembly respectively, with this electricity connection of realizing utmost point ear and utmost point post subassembly, because utmost point ear connecting portion is coincidence with utmost point post connecting portion in the orthographic projection at utmost point post connecting portion on the plane, not only can conveniently switch piece connection utmost point ear and utmost point post subassembly, and the switching piece can make full use of battery inner space, with this performance that improves the switching piece.

According to a second aspect of the present invention, a battery is provided, which includes the above-mentioned adapter sheet.

The utility model discloses the battery is including switching the piece, the switching piece includes utmost point ear connecting portion, utmost point post connecting portion and switching portion, utmost point ear connecting portion and utmost point post connecting portion are connected respectively to the both ends of switching portion, thereby can make things convenient for utmost point ear and utmost point post connecting portion to connect utmost point ear and utmost point post subassembly respectively, with this electricity connection of realizing utmost point ear and utmost point post subassembly, because utmost point ear connecting portion superpose with utmost point post connecting portion at least part of orthographic projection on utmost point post connecting portion place plane, not only can conveniently switch piece connection utmost point ear and utmost point post subassembly, and the switching piece can make full use of battery inner space, with this performance that improves the battery.

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

The utility model discloses the group battery includes the battery, the switching piece of battery includes utmost point ear connecting portion, utmost point post connecting portion and switching portion, utmost point ear connecting portion and utmost point post connecting portion are connected respectively to the both ends of switching portion, thereby can make things convenient for utmost point ear and utmost point post connecting portion to connect utmost point ear and utmost point post subassembly respectively, with this electricity connection of realizing utmost point ear and utmost point post subassembly, because utmost point ear connecting portion superpose mutually with utmost point post connecting portion at least part of orthographic projection on utmost point post connecting portion place plane, not only can conveniently switch piece connection utmost point ear and utmost point post subassembly, and the switching piece can make full use of battery inner space, with this performance that improves the group battery.

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 structural view of an interposer shown in accordance with a first exemplary embodiment;

FIG. 3 is a schematic structural view of an interposer shown in accordance with a second exemplary embodiment;

fig. 4 is a schematic structural diagram of an interposer according to a third exemplary embodiment.

The reference numerals are explained below:

10. a housing; 20. an electric core; 21. a cell main body; 22. a pole ear portion; 30. a pole assembly; 40. a patch; 41. a tab connecting part; 42. a pole connecting part; 43. a switching part; 44. avoiding the space.

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, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

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 the context of a connection between one element or feature and another element(s), "on," "under," or "inside" or "outside," it can be directly connected to the other element(s) "on," "under" or "inside" or "outside," or indirectly connected to the other element(s) "on," "under" or "inside" or "outside" through intervening elements.

An embodiment of the utility model provides an adapter plate, please refer to fig. 1 and fig. 2, adapter plate 40 is used for connecting utmost point ear portion 22 and utmost point post subassembly 30, and adapter plate 40 includes: a tab connection portion 41, the tab connection portion 41 being used to connect with the tab portion 22; the pole connecting part 42, the pole connecting part 42 is used for connecting with the pole assembly 30; the adapter 43 has two ends of the adapter 43 respectively connected to the tab connection portion 41 and the pole connection portion 42, and an orthogonal projection of the tab connection portion 41 on a plane where the pole connection portion 42 is located at least partially coincides with the pole connection portion 42.

The utility model discloses an adaptor piece 40 of embodiment includes utmost point ear connecting portion 41, utmost point post connecting portion 42 and switching portion 43, and utmost point ear connecting portion 41 and utmost point post connecting portion 42 are connected respectively to the both ends of switching portion 43 to can make things convenient for utmost point ear connecting portion 41 and utmost point post connecting portion 42 to connect utmost point ear portion 22 and utmost point post subassembly 30 respectively, with this electricity connection that realizes utmost point ear portion 22 and utmost point post subassembly 30. Because the orthographic projection of the tab connecting part 41 on the plane of the pole connecting part 42 is at least partially overlapped with the pole connecting part 42, the tab connecting part 40 can be conveniently connected with the pole ear part 22 and the pole assembly 30, and the tab connecting part 40 can fully utilize the internal space of the battery, so that the use performance of the tab connecting part 40 is improved.

In some embodiments, as shown in fig. 2 and 3, the tab connection portion 41 and the pole connection portion 42 extend toward the same side of the adaptor portion 43, so that the adaptor sheet 40 can make full use of the internal space of the battery.

In some embodiments, as shown in connection with fig. 4, the tab connection portion 41 and the pole connection portion 42 extend toward opposite sides of the adaptor portion 43.

It should be noted that, the tab connection portion 41 and the pole connection portion 42 are respectively connected to two ends of the adapter portion 43, the tab connection portion 41 and the pole connection portion 42 extend toward the same side of the adapter portion 43, and the tab connection portion 41 and the pole connection portion 42 are directly opposite to each other. That is, the two ends of the transition portion 43 are the first end and the second end, and the two relatively large surfaces of the transition portion 43 are the first surface and the second surface, the tab connection portion 41 and the post connection portion 42 are respectively connected to the first end and the second end, and the tab connection portion 41 and the post connection portion 42 can both be located on one side of the first surface, that is, the tab connection portion 41 and the post connection portion 42 extend toward one side of the first surface. Alternatively, the tab connection part 41 and the pole connection part 42 may be both located at one side of the second surface, i.e., the tab connection part 41 and the pole connection part 42 extend toward one side of the second surface.

Because the tab connection part 41 and the pole connection part 42 extend towards the same side of the adapter part 43, and the orthographic projection of the tab connection part 41 on the plane where the pole connection part 42 is located is at least partially overlapped with the pole connection part 42, the space occupancy of the adapter sheet 40 is relatively small, and the utilization rate of the internal space of the battery can be improved.

The tab connection part 41 and the pole connection part 42 extend toward opposite sides of the adaptor part 43, and the tab connection part 41 and the pole connection part 42 may be respectively located at one side of the first face and one side of the second face, i.e., the tab connection part 41 and the pole connection part 42 may respectively extend toward one side of the first face and one side of the second face.

In one embodiment, the included angle between the tab connection portion 41 and the adapter portion 43 is a, a is more than or equal to 90 degrees and less than 180 degrees, so that the tab portion 22 can be conveniently arranged on the tab connection portion 41 on the basis that the tab connection portion 42 is connected with the tab assembly 30, and the tab portion 22 and the tab connection portion 41 can be conveniently connected on one side.

In one embodiment, the angle between the tab connection part 41 and the adaptor part 43 may be 90 °, 91 °, 95 °, 100 °, 120 °, 130 °, 140 °, 150 °, 155 °, 160 °, 170 °, 171 °, 175 °, and so on.

In one embodiment, the tab connection portion 41 is parallel to the post connection portion 42, so that the tab connection portion 41 and the post connection portion 42 do not occupy too much space, and the tab connection portion 41 and the post connection portion 42 are convenient to connect the tab portion 22 and the post assembly 30 respectively.

In one embodiment, as shown in fig. 2, the pole coupling portion 42 is perpendicular to the transition portion 43, and the pole coupling portion 41 is perpendicular to the transition portion 43, so that the transition piece 40 has a substantially U-shaped structure, thereby preventing the pole ear portion 22 and the pole assembly 30 from being excessively positioned, and facilitating the electrical connection between the pole ear portion 22 and the pole assembly 30 by the transition piece 40.

In one embodiment, as shown in fig. 3, the angle between the pole connecting portion 42 and the adapter portion 43 is an acute angle, and the angle between the pole connecting portion 41 and the adapter portion 43 is an obtuse angle.

In one embodiment, as shown in fig. 4, the tab connection portion 41 and the post connection portion 42 extend toward two opposite sides of the adapter portion 43, the included angle between the tab connection portion 41 and the adapter portion 43 is an acute angle, and the included angle between the post connection portion 42 and the adapter portion 43 is an acute angle, so that the adapter sheet 40 can occupy a smaller internal space of the battery on the basis of facilitating the connection between the tab connection portion 41 and the post connection portion 42 and the connection between the tab portion 22 and the post assembly 30.

In one embodiment, a reinforcing portion may be disposed between the tab connection portion 41 and the adaptor portion 43, and a reinforcing portion may also be disposed between the post connection portion 42 and the adaptor portion 43, so as to improve the structural strength of the adaptor sheet 40 and ensure that the adaptor sheet 40 has sufficient overcurrent capacity.

In one embodiment, a first score for bending is provided between the tab connection portion 41 and the adaptor portion 43, so as to avoid the problem of breaking between the tab connection portion 41 and the adaptor portion 43, thereby ensuring the structural strength of the adaptor sheet 40. Further, a reinforcing part can be arranged between the tab connecting part 41 and the adapter part 43, so that the connection strength between the tab connecting part 41 and the adapter part 43 can be further ensured on the basis of facilitating the bending of the tab connecting part 41 and the adapter part 43.

In one embodiment, a second notch for bending is provided between the post connecting portion 42 and the adaptor portion 43, so as to avoid the problem of breaking or the like between the post connecting portion 42 and the adaptor portion 43, thereby ensuring the structural strength of the adaptor piece 40. Further, a reinforcing part can be arranged between the pole connecting part 42 and the switching part 43, so that the connection strength between the pole connecting part 42 and the switching part 43 can be further ensured on the basis that the pole connecting part 42 and the switching part 43 are convenient to bend.

It should be noted that the tab portion 22 extends from the cell main body 21 along a first direction, the first direction a is perpendicular to a second direction B, as shown in fig. 2, the adaptor sheet 40 includes a tab connecting portion 41, a pole connecting portion 42 and an adaptor portion 43, the tab connecting portion 41 and the pole connecting portion 42 are disposed opposite to each other, and a width of the tab connecting portion 41 along the second direction B is greater than a width of the pole connecting portion 42 along the second direction B. The width of the adaptor portion 43 in the second direction B is not less than the width of the tab connecting portion 41 in the second direction B.

An embodiment of the present invention further provides a battery, including the above-mentioned interposer 40.

The utility model discloses a battery of embodiment includes switching piece 40, and switching piece 40 includes utmost point ear connecting portion 41, utmost point post connecting portion 42 and switching portion 43, and utmost point ear connecting portion 41 and utmost point post connecting portion 42 are connected respectively to the both ends of switching portion 43 to can make things convenient for utmost point ear connecting portion 41 and utmost point post connecting portion 42 to connect utmost point ear portion 22 and utmost point post subassembly 30 respectively, with this electricity connection that realizes utmost point ear portion 22 and utmost point post subassembly 30. Because the orthographic projection of the tab connecting part 41 on the plane of the pole connecting part 42 is at least partially coincided with the pole connecting part 42, the tab connecting part 40 can be conveniently connected with the pole ear part 22 and the pole assembly 30, and the tab connecting part 40 can fully utilize the internal space of the battery, so that the use performance of the battery is improved.

In one embodiment, as shown in fig. 1 and 2, the battery further includes: a housing 10; the battery cell 20 is arranged in the casing 10, the battery cell 20 includes a battery cell main body 21 and a tab portion 22, and the tab portion 22 is connected to the tab connecting portion 41; the pole assembly 30, the pole assembly 30 is disposed on the housing 10, and the pole assembly 30 is connected to the pole connecting portion 42. The setting of switching piece 40 can make things convenient for the connection of utmost point ear portion 22 and utmost point post subassembly 30, and utmost point ear portion 22 and utmost point post subassembly 30 can direct relative setting to this is convenient to be connected with switching piece 40, and can improve the inside space utilization of battery.

The battery includes a cell and an electrolyte, and is a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery 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, the tab portion 22 includes two or more single tabs extending from the side surface of the cell main body 21, and the extending direction of the single tabs when the single tabs are respectively pulled in the direction perpendicular to the side surface of the cell main body 21 is the first direction a.

It should be noted that the cell main body 21 includes more than two pole pieces, the tab portion 22 includes more than two single tabs, the single tabs respectively extend from the corresponding pole pieces, the width of the single tabs is smaller than that of the pole pieces, and a plurality of single tabs are stacked to form the tab portion 22 and welded to the tab connecting portion 41. In some embodiments, it is not excluded that the width of the single tab coincides with the width of the pole piece, and that a cutting process may follow. Wherein the single tab is made of a metal foil having good electrical and thermal conductivity, such as aluminum, copper, nickel, or the like.

In one embodiment, the tab connection part 41 and the tab part 22 are connected by welding, such as ultrasonic welding, resistance welding or laser welding, and the tab connection part 41 and the tab part 22 are preferably connected by ultrasonic welding, and due to the thin size of the single tab, the ultrasonic welding has less damage to the tab part than the laser welding and the resistance welding, thereby improving the welding yield of the tab connection part 41 and the tab part 22. The pole connecting portion 42 and the pole assembly 30 may be connected by riveting, welding, or the like. The pole assembly 30 may include a pole and a terminal, the pole may be connected with the pole connection portion 42. The welding may be any one of laser welding, ultrasonic welding, and resistance welding. For example, the tab connection part 41 and the tab part 22 may be connected by ultrasonically welding a plurality of single tabs for forming the tab part 22 so that the plurality of single tabs form the tab part 22 after being gathered, and then welding the tab connection part 41 by laser welding. In some embodiments, the tab connection portion 41 and the tab portion 22 can be connected by ultrasonic welding only, for example, after the single tab is folded, the tab connection portion 41 is directly connected by ultrasonic welding.

In one embodiment, the large surface of the adapter 43 faces the end of the cell body 21 having the tab portion 22, that is, the adapter 43 is directly opposite to the end of the cell body 21 having the tab portion 22, so that the area between the tab portion 22 and the terminal assembly 30 is relatively large, the overcurrent capacity of the adapter sheet 40 can be improved, and the problem of fusing of the adapter sheet 40 can be avoided. Further, the tab part 22 may be stacked on the tab connection part 41.

In one embodiment, the tab connection part 41 and the pole connection part 42 extend toward the side of the adapter part 43 facing away from the cell body 21, i.e., the opening of the relief space 44 formed by the adapter sheet 40 is arranged away from the end of the cell body 21 having the pole ear 22, so that the adapter sheet 40 can make maximum use of the space between the pole ear 22 and the pole assembly 30.

In certain embodiments, it is not excluded that the large surface of the adapter portion 43 is perpendicular to the end of the cell body 21 having the lug portion 22, i.e., the adapter sheet 40 is substantially perpendicular to the end of the cell body 21 having the lug portion 22.

In one embodiment, the tab portion 22 extends from the cell main body 21 along a first direction, and along a second direction perpendicular to the first direction, the width of the adapter portion 43 is not smaller than that of the tab portion 22, so as to increase the passing rate of the current between the tab portion 22 and the pole assembly 30, enhance the overcurrent capacity of the connecting piece, and ensure the usability of the adapter piece 40.

In one embodiment, the tab portion 22 extends from the battery cell main body 21 along the first direction, and along the second direction perpendicular to the first direction, the width of the tab connecting portion 41 is greater than 1/3 of the width of the tab portion 22, so as to ensure the contact area between the tab portion 22 and the post connecting portion 42, improve the overcurrent capacity between the tab portion 22 and the post connecting portion 42, enhance the overcurrent capacity of the interposer 40, and ensure the usability of the interposer 40.

Note that, if the width of the tab connecting portion 41 is greater than 1/3, i.e., the width of the tab connecting portion 41 may be b and the width of the tab 22 may be c, the value (1/3) c < b is greater than the value (1/3) of the width of the tab portion 22.

In one embodiment, the distance between the tab connection portion 41 and the post connection portion 42 is not greater than 1/2 of the thickness of the cell body 21, so that the adaptor sheet 40 can be prevented from occupying a large space inside the battery, and the adaptor sheet 40 can be used to conveniently connect the post portion 22 and the post assembly 30.

In one embodiment, the tab portion 22 is welded to the tab connecting portion 41, and the welding area of the tab portion 22 to the tab connecting portion 41 is not less than 1/2 of the area of the tab connecting portion 41, so that not only a sufficient flow area between the tab portion 22 and the tab connecting portion 41 can be ensured, but also the connection stability of the tab portion 22 to the tab connecting portion 41 can be ensured.

It should be noted that the thickness of the cell main body 21 is the thickness of the pole piece stacking direction, the tab portion 22 extends from the cell main body 21 along the first direction, and the thickness of the cell main body 21 is perpendicular to the first direction. The distance between utmost point ear connecting portion 41 and utmost point post connecting portion 42 is not more than 1/2 of electric core main part 21 thickness, and the distance between utmost point ear connecting portion 41 and the utmost point post connecting portion 42 is d, and electric core main part 21 thickness is e, and d is less than or equal to (1/2) e. The welding area of the tab part 22 and the tab connecting part 41 is not less than 1/2 of the area of the tab connecting part 41, the welding area of the tab part 22 and the tab connecting part 41 is f, the area of the tab connecting part 41 is t, (1/2) t is less than or equal to f.

In an embodiment, as shown in fig. 1 and fig. 2, the pole connecting portion 42 is welded to the pole assembly 30, and after the pole connecting portion 42 is welded to the pole assembly 30, the pole connecting portion 42 is bent to form the switching portion 43 and the tab connecting portion 41, so that an avoiding space 44 is formed between the tab connecting portion 41 and the pole connecting portion 42, and the avoiding space 44 can be used for accommodating peripheral components connected to the auxiliary tab connecting portion 41 and the tab portion 22, so that the connection between the tab connecting portion 41 and the tab portion 22 is facilitated, the battery assembly efficiency is improved, and the connection stability between the tab connecting portion 41 and the tab portion 22 is ensured.

It should be noted that, the tab portion 22 is welded to the tab connection portion 41, and an avoidance space 44 is formed between the tab connection portion 41 and the pole connection portion 42, so that external components can be placed in the avoidance space 44, for example, the tab connection portion 41 is welded to the tab portion 22, so that a welding seat can be placed in the avoidance space, and therefore it is ensured that the tab connection portion 41 and the tab portion 22 are stably welded.

In one embodiment, the ends of the tab portions 22 are located within the relief space 44. As shown in fig. 1, when the tab connecting portion 41 and the tab portion 22 are welded together, the tab portion 22 is long. Further, after the tab connection portion 41 is connected to the tab portion 22, the avoiding space 44 may be used to accommodate the tab portion 22, that is, the longer tab portion 22 is bent, so that the free end of the tab portion can be accommodated in the avoiding space 44, the space utilization rate inside the battery is improved, the tab portion 22 is not electrically connected to other components, the tab portion 22 is bent, and the tab connection portion 41 is partially clamped in the tab portion 22.

In one embodiment, the housing 10 may be made of stainless steel or aluminum, and has good corrosion resistance and sufficient strength. The thickness of the shell 10 is uniform, the structural stability is strong, and the processing is convenient.

In one embodiment, the casing 10 may include a first casing member and a second casing member connected to the first casing member to enclose the battery cells 20; wherein the pole assembly 30 is arranged on the first or second housing part. Referring to fig. 1, the housing 10 shown in the figures can be considered as a first housing part or a second housing part, wherein the housing 10 shown in fig. 1 can be considered as a cover.

It should be noted that the pole assembly 30 is insulated from the housing 10, for example, the pole assembly and the housing may be insulated by an insulating member, or may be insulated by an insulating coating, which is not limited herein and may be selected according to actual requirements.

In one embodiment, the interposer 40 is a one-piece structure, thereby ensuring structural stability of the interposer 40.

It should be noted that the integral structure may be formed by separately molding a plurality of components and then connecting them, or may be formed integrally. In the present embodiment, the interposer 40 is integrally formed. In some embodiments, the tab connection portion 41, the pole connection portion 42 and the adapter portion 43 may be separated and connected.

In one embodiment, the battery cells 20 are laminated battery cells, which are not only convenient for grouping, but also can be processed to obtain batteries with longer length.

Specifically, the battery cell 20 is a laminated battery cell, and the battery cell 20 has a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm disposed between the first pole piece and the second pole piece, so that a plurality of pairs of the first pole piece and the second pole piece are stacked to form the laminated battery cell.

Optionally, the battery may be a wound battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound battery core.

An embodiment of the utility model also provides a group battery, including foretell battery.

The utility model discloses the group battery of an embodiment includes the battery, and the switching piece 40 of battery includes utmost point ear connection portion 41, utmost point post connecting portion 42 and switching portion 43, and utmost point ear connection portion 41 and utmost point post connecting portion 42 are connected respectively to the both ends of switching portion 43 to can make things convenient for utmost point ear connection portion 41 and utmost point post connecting portion 42 to connect utmost point ear portion 22 and utmost point post subassembly 30 respectively, with this electricity connection that realizes utmost point ear portion 22 and utmost point post subassembly 30. Because utmost point ear connecting portion 41 and utmost point post connecting portion 42 extend towards same one side of switching portion 43, and utmost point ear connecting portion 41 and utmost point post connecting portion 42 at least partial coincidence mutually of orthographic projection on the perpendicular plane of switching portion 43, not only can make things convenient for switching piece 40 to connect utmost point ear portion 22 and utmost point post subassembly 30, and switching piece 40 can make full use of battery inner space to this performance that improves the group battery.

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 battery case for holding 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 battery box. Wherein, a plurality of batteries can form and install in the battery 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 battery box, need not to carry out in groups a plurality of batteries promptly, utilize the battery 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 invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention 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 present disclosure is limited only by the appended claims.

Claims

1. An interposer for connecting a pole ear (22) and a pole assembly (30), the interposer comprising:

a tab connection part (41), wherein the tab connection part (41) is used for being connected with the tab part (22);

the pole connecting part (42), the pole connecting part (42) is used for being connected with the pole assembly (30);

switching portion (43), the both ends of switching portion (43) are connected respectively utmost point ear connecting portion (41) with utmost point post connecting portion (42), utmost point ear connecting portion (41) are in orthographic projection on utmost point post connecting portion (42) place plane at least partially with utmost point post connecting portion (42) coincide mutually.

2. An adaptor plate according to claim 1, characterised in that the tab connection portion (41) and the pole connection portion (42) extend towards the same side of the adaptor portion (43).

3. The interposer as recited in claim 1 or 2, wherein an angle between the tab connection portion (41) and the interposer portion (43) is a, a being 90 ° or more and 180 ° or less.

4. The interposer as claimed in claim 1 or 2, wherein the tab connection (41) is parallel to the pole connection (42).

5. An adaptor plate according to claim 4, characterised in that the pole connecting portion (42) is perpendicular to the adaptor portion (43).

6. The interposer as recited in claim 1, wherein the tab connection portion (41) and the post connection portion (42) extend toward opposite sides of the interposer portion (43), an included angle between the tab connection portion (41) and the interposer portion (43) is an acute angle, and an included angle between the post connection portion (42) and the interposer portion (43) is an acute angle.

7. The interposer as claimed in one of claims 1, 2 or 6, wherein a first indentation for bending is provided between the tab connection (41) and the transition (43) and/or a second indentation for bending is provided between the post connection (42) and the transition (43).

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

9. The battery of claim 8, further comprising:

a housing (10);

the battery cell (20), the battery cell (20) is arranged in the shell (10), the battery cell (20) comprises a battery cell main body (21) and a tab part (22), and the tab part (22) is connected with the tab connecting part (41);

the terminal post assembly (30), the terminal post assembly (30) is arranged on the shell (10), and the terminal post assembly (30) is connected with the terminal post connecting part (42).

10. The battery according to claim 9, wherein a large surface of the adaptor portion (43) faces an end of the cell main body (21) having the tab portion (22).

11. The battery according to claim 10, characterized in that the tab connection portion (41) and the pole connection portion (42) extend towards the adapter portion (43) on the side facing away from the cell body (21).

12. The battery according to claim 10 or 11, wherein the tab portion (22) extends from the cell main body (21) in a first direction, and a width dimension of the tab connecting portion (41) in a second direction perpendicular to the first direction is greater than 1/3 of the width dimension of the tab portion (22).

13. The battery according to claim 10 or 11, characterized in that the distance between the tab connection part (41) and the pole connection part (42) is not greater than 1/2 of the thickness of the cell body (21).

14. The battery according to claim 10 or 11, wherein the tab portion (22) is welded to the tab connecting portion (41), and a welding area of the tab portion (22) to the tab connecting portion (41) is not less than 1/2 of the area of the tab connecting portion (41).

15. The battery according to any one of claims 9 to 11, wherein the pole connecting portion (42) is welded to the pole assembly (30), and after the pole connecting portion (42) is welded to the pole assembly (30), the pole connecting portion is bent to form the adapter portion (43) and the tab connecting portion (41), so that an avoiding space (44) is formed between the tab connecting portion (41) and the pole connecting portion (42);

wherein the tab portion (22) is welded to the tab connecting portion (41).

16. The battery of claim 15, wherein an end of the tab portion (22) is located within the relief space (44).

17. A battery comprising the cell of any one of claims 8 to 16.