CN220042190U - Battery and battery device - Google Patents

Abstract

The present disclosure relates to the field of battery technology, and in particular, to a battery, which includes: the battery cell comprises a shell, a battery cell, a pole and a current collecting assembly, wherein the shell is provided with a containing cavity, the shell comprises a cover plate, and the cover plate is positioned at one end of the containing cavity; the battery cell is arranged in the accommodating cavity; the pole is arranged on the cover plate; the current collecting assembly is arranged between the battery core and the cover plate and comprises a first current collecting disc, a second current collecting disc and an insulating piece, the insulating piece is arranged between the first current collecting disc and the second current collecting disc, the first current collecting disc comprises a first connecting part, a second connecting part and a first connecting fin, the first connecting part is connected with the battery core, the second connecting part is connected with the first connecting part, the second connecting part is connected with the first electrode output end, and the first connecting fin extends from the first connecting part to the insulating piece, and the first connecting fin is connected with the insulating piece.

Description

Battery and battery device

Technical Field

The disclosure relates to the technical field of batteries, and in particular relates to a battery device.

Background

With the development and progress of technology, electric vehicles are increasingly used. Battery devices are often provided in electric vehicles for powering the electric vehicles. The battery device is provided with a plurality of single batteries, each single battery comprises a shell, a battery core, a pole column and a current collecting disc, wherein the current collecting disc is connected with the battery core and the pole column, or the current collecting disc is connected with the battery core and the shell, the current collecting disc is connected with the battery core, the pole column and the shell in a welding mode, more heat is generated during welding, and the quality problem of the battery is easily caused if the heat generated during welding is not timely dissipated.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The disclosure provides a battery and a battery device, and further improves heat dissipation performance of a current collecting plate in the battery during welding to at least a certain extent.

According to one aspect of the present disclosure, there is provided a battery including:

the shell is provided with a containing cavity, and comprises a cover plate, wherein the cover plate is positioned at one end of the containing cavity;

the battery cell is arranged in the accommodating cavity;

the pole is arranged on the cover plate;

the current collecting assembly is arranged between the battery cell and the cover plate and comprises a first current collecting disc, a second current collecting disc and an insulating piece, the insulating piece is arranged between the first current collecting disc and the second current collecting disc, the first current collecting disc comprises a first connecting part, a second connecting part and a first connecting fin, the first connecting part is connected with the battery cell, the second connecting part is connected with the first connecting part, the second connecting part is connected with a first electrode output end, the first connecting fin extends from the first connecting part to the insulating piece so that the first connecting fin at least partially covers the insulating piece, the first connecting fin is connected with the insulating piece, the second current collecting disc is connected with the battery cell and a second electrode output end, the first electrode output end is one of the shell and the pole, and the second electrode output end is the other of the shell and the pole.

The battery provided by the embodiment of the disclosure comprises a shell, a battery core, a pole and a current collecting assembly, wherein the battery core is arranged in the shell, the pole is arranged on a cover plate of the shell, the current collecting assembly is arranged between the battery core and the cover plate, the current collecting assembly comprises a first current collecting disc, a second current collecting disc and an insulating piece, the insulating piece is arranged between the first current collecting disc and the second current collecting disc, the first current collecting disc comprises a first connecting part, a second connecting part and a first connecting fin, the first connecting part is connected with the battery core, the second connecting part is connected with the first connecting part, the second connecting part is connected with the output end of the first electrode, the first connecting fin is connected with the first connecting part, the heat radiating area of the first current collecting disc is increased through the first connecting fin, the heat radiating capacity of the current collecting disc assembly is further improved, the first connecting fin extends to the insulating piece and is connected with the insulating piece, and the connection stability of the current collecting disc assembly is improved.

According to another aspect of the present disclosure, a battery device is provided that includes a battery thereon.

The battery device provided by the embodiment of the disclosure comprises a battery, wherein a battery core is arranged in a shell in the battery, a pole is arranged on a cover plate of the shell, a current collecting assembly is arranged between the battery core and the cover plate and comprises a first current collecting disc, a second current collecting disc and an insulating piece, the insulating piece is arranged between the first current collecting disc and the second current collecting disc, the first current collecting disc comprises a first connecting part, a second connecting part and a first connecting fin, the first connecting part is connected with the battery core, the second connecting part is connected with the first connecting part, the second connecting part is connected with a first electrode output end, the first connecting fin is connected with the first connecting part, the heat radiating area of the first current collecting disc is increased through the first connecting fin, the heat radiating capacity of the current collecting disc assembly is improved, the first connecting fin extends to the insulating piece and is connected with the insulating piece, the connecting stability of the current collecting disc assembly is improved, and the quality of the battery device is further improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic view of a battery according to an exemplary embodiment of the present disclosure;

fig. 2 is a schematic structural view of a current collecting assembly according to an exemplary embodiment of the present disclosure;

fig. 3 is an exploded schematic view of a current collecting assembly provided in an exemplary embodiment of the present disclosure;

fig. 4 is a schematic structural view of a battery device according to an exemplary embodiment of the present disclosure.

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.

The exemplary embodiment of the present disclosure first provides a battery 10, as shown in fig. 1, the battery 10 including: the battery comprises a shell 11, a battery core 12, a pole 13 and a current collecting assembly 14, wherein the shell 11 is provided with a containing cavity, the shell 11 comprises a cover plate 11, and the cover plate 11 is positioned at one end of the containing cavity; the battery cell 12 is arranged in the accommodating cavity; the pole 13 is arranged on the cover plate 11; as shown in fig. 2, the current collecting assembly 14 is disposed between the battery cell 12 and the cap plate 11, the current collecting assembly 14 includes a first current collecting plate 141, a second current collecting plate 142, and an insulating member 143, the insulating member 143 is disposed between the first current collecting plate 141 and the second current collecting plate 142, the first current collecting plate 141 includes a first connection portion 401, a second connection portion 402, and a first connection fin 403, the first connection portion 401 is connected to the battery cell 12, the second connection portion 402 is connected to the first connection portion 401, and the second connection portion 402 is connected to the first electrode output, the first connection fin 403 extends from the first connection portion 401 to the insulating member 143 such that the first connection fin 403 at least partially covers the insulating member 143, and the first connection fin 403 is connected to the insulating member 143, the second current collecting plate 142 connects the battery cell 12 and the second electrode output, the first electrode output is one of the case 11 and the post 13, and the second electrode output is the other of the case 11 and the post 13.

The battery 10 provided by the embodiment of the disclosure includes a housing 11, a battery core 12, a pole 13 and a current collecting component 14, the battery core 12 is disposed in the housing 11, the pole 13 is disposed on a cover plate 11 of the housing 11, the current collecting component 14 is disposed between the battery core 12 and the cover plate 11, the current collecting component 14 includes a first current collecting disk 141, a second current collecting disk 142 and an insulating member 143, the insulating member 143 is disposed between the first current collecting disk 141 and the second current collecting disk 142, the first current collecting disk 141 includes a first connecting portion 401, a second connecting portion 402 and a first connecting fin 403, the first connecting portion 401 is connected with the battery core 12, the second connecting portion 402 is connected with the first connecting portion 401, and the second connecting portion 402 is connected with a first electrode output end, the first connecting fin 403 is connected with the first connecting portion 401, the heat dissipation area of the first current collecting disk 141 is increased through the first connecting fin 403, the heat dissipation capability of the current collecting component 14 is further improved, the first connecting fin 403 extends to the insulating member 143 and is connected with the insulating member 143, and the connection stability of the current collecting component 14 is improved.

The following will describe in detail the respective portions of the battery 10 provided in the embodiments of the present disclosure:

the housing 11 is used to form the outer contour of the battery 10 and protect the devices such as the battery cell 12 and the current collecting assembly 14 in the housing 11. The housing 11 includes a housing main body 12 and a cover plate 11, one end of the housing main body 12 being provided with an opening; the cover plate 11 is blocked at one end of the shell main body 12 with an opening; wherein the second connection part 402 connects the case main body 12 and/or the cover plate 11.

The case body 12 includes a cylinder 121 and an end plate 122, the end plate 122 is connected to one end of the cylinder 121, and the cover plate 11 is provided to the other end of the cylinder 121. The post 13 is provided on the cover plate 11, and an explosion-proof valve for explosion after thermal runaway of the battery 10 to release pressure inside the battery 10 may be provided on the end plate 122.

The housing body 12 is illustrated as an integrally formed structure, i.e., the barrel 121 and the end plate 122 are integrally formed. For example, the cylinder 121 and the end plate 122 may be integrally punched out of the same blank, or the cylinder 121 and the end plate 122 may be formed by cutting the same blank. The cover plate 11 may be coupled to the cylinder 121 by welding or riveting, etc.

It will be appreciated that the cylinder 121 and the end plate 122 may be of a split-type construction, with the end plate 122 being attached to the cylinder 121 by welding or riveting or the like. The cover plate 11 and the cylinder 121 may be integrally formed, for example, the cover plate 11 and the cylinder 121 may be integrally punched out of the same blank, or the cylinder 121 and the cover plate 11 may be formed by cutting the same blank. Or the cap plate 11 and the cylinder 121 may be coupled by welding or riveting, etc.

The housing 11 is made of an electrically conductive material, and the housing 11 may be a steel shell. Further, the cover plate 11 in the housing 11 is made of steel. The material of the cylinder 121 and the end plate 122 may be stainless steel, aluminum, nickel, cadmium, manganese, tungsten, copper, or the like. When the cylinder 121 and the end plate 122 are integrally formed, the cylinder 121 and the end plate 122 are made of the same material, for example, stainless steel. The material of the cover plate 11 may be the same as or different from that of the cylinder 121, and the embodiment of the present disclosure is not limited thereto.

In a possible embodiment, the battery 10 may be a cylindrical battery, and the housing 11 has a cylindrical structure. The cover plate 11 and the end plate 122 are both in a circular plate-shaped structure, the cylinder 121 is in a thin-wall cylindrical structure with two open ends, and the cover plate 11 and the end plate 122 are respectively plugged at the two ends of the cylinder 121.

In another possible embodiment, the battery 10 may also be a hexagonal-prism battery. The housing 11 has a hexagonal prism structure. The cylinder 121 has a thin-walled hexagonal prism structure with two open ends, the cover plate 11 and the end plate 122 have hexagonal plate structures, and the cover plate 11 and the end plate 122 are respectively plugged at the two ends of the cylinder 121.

It should be noted that, although the above embodiment is described taking the battery 10 as a cylindrical battery or a hexagonal battery as an example, the embodiment of the present disclosure is not limited thereto, and the battery 10 in the embodiment of the present disclosure may be other batteries, for example, a rectangular battery or a triangular battery.

The battery 12 includes a battery body 121, a first tab 122 and a second tab 123, and the first tab 122 and the second tab 123 extend from the battery body 121. The first tab 122 and the second tab 123 extend from one end of the body of the battery cell 12 near the cover plate 11.

The battery cell 12 may be a winding type battery cell, and the battery cell 12 includes a first electrode plate, a second electrode plate and a diaphragm, where the electrical properties of the first electrode plate and the second electrode plate are opposite, for example, the first electrode plate is a positive electrode plate, and the second electrode plate is a negative electrode plate. The diaphragm sheet is disposed between the first pole piece and the second pole piece, and is wound to obtain the wound cell 12.

A plurality of first lugs may be disposed on the first pole piece, a plurality of second lugs may be disposed on the second pole piece, and when the first pole piece and the second pole piece are wound, the plurality of first lugs are connected to form a first tab 122, and the plurality of second tabs 123 are connected to form a second tab 123.

The pole 13 is arranged on the cover plate 11, part of the pole 13 protrudes out of the cover plate 11, and part of the pole 13 is positioned in the accommodating cavity. For example, the pole 13 may include a main body portion, a protruding portion and a built-in portion, where the cover plate 11 is provided with a through hole, the main body portion is disposed in the through hole of the cover plate 11 in a penetrating manner, the protruding portion is connected to one end of the main body portion away from the battery cell 12, the protruding portion protrudes from an outer surface of the cover plate 11, and the protruding portion is used for connecting the busbar. The built-in portion is connected to one end of the main body portion near the battery cell 12, and the built-in portion is used for connecting the current collecting assembly 14.

In the embodiment of the present disclosure, the housing 11 is one electrode of the battery 10, the pole 13 is one electrode of the battery 10, and in order to avoid shorting of the battery 10, the housing 11 and the pole 13 need to be insulated, that is, the cover 11 and the pole 13 need to be insulated, and on this basis, the battery 10 may further include an insulating component, where the insulating component is disposed between the pole 13 and the cover 11.

The current collecting assembly 14 is disposed between the battery cell 12 and the cover plate 11, the current collecting assembly 14 includes a first current collecting plate 141, a second current collecting plate 142, and an insulating member 143, the insulating member 143 is disposed between the first current collecting plate 141 and the second current collecting plate 142, the first current collecting plate 141 includes a first connection portion 401, a second connection portion 402, and a first connection fin 403, the first connection portion 401 is connected with the battery cell 12, the second connection portion 402 is connected with the first connection portion 401, and the second connection portion 402 is connected with a first electrode output (the case 11), the first connection fin 403 extends from the first connection portion 401 to the insulating member 143, and the first connection fin 403 is connected with the insulating member 143, and the second current collecting plate 142 connects the battery cell 12 with a second electrode output (the post 13).

It should be noted that, in the embodiment of the present disclosure, the first electrode output end is taken as the housing 11, and the second electrode output end is taken as the pole 13 as an example for illustration, however, in practical application, the first electrode output end may also be the pole 13, and the second electrode output end is taken as the housing 11, which is not limited to this embodiment of the present disclosure.

The first connection part 401 is opposite to the first end of the main body of the battery cell 12, and the first tab 122 is welded to the first connection part 401. One end of the second connection part 402 is connected to the first connection part 401, and the other end of the second connection part 402 is connected to the housing 11. The second connection part 402 may be connected to the case main body 12, or the second connection part 402 may be connected to the cover plate 11, or the second connection part 402 may connect the case main body 12 and the cover plate 11. The first connection part 401 may have a fan-shaped or approximately fan-shaped structure, and the second connection part 402 is connected to an arc-shaped edge of the first connection part 401.

As shown in fig. 3, when the second connection part 402 is connected to the case main body 12, the second connection part 402 includes a first conductive segment 421, the first conductive segment 421 is connected to the first connection part 401, and the first conductive segment 421 is at least partially attached to the case main body 12. The first connection portion 401 and the first conductive section 421 are not coplanar, for example, the first connection portion 401 and the cover plate 11 are disposed in parallel, and the first conductive section 421 and the first connection portion 401 are perpendicular. The first conductive section 421 may have an arc shape, and the first conductive section 421 of the arc shape is attached to the inner wall of the barrel 121.

When the second connection part 402 is connected with the cap plate 11, the second connection part 402 may include a first conductive section 421 and a second conductive section 422, the first conductive section 421 is connected with the first connection part 401, and the first conductive section 421 and the inner wall of the can 121 have a space. The second conductive segment 422 is connected to an end of the first conductive segment 421 away from the first connection portion 401, the second conductive segment 422 is attached to the inner surface of the cover 11, and the second conductive segment 422 and the cover 11 are welded. The second conductive segment 422 may be annular or arcuate. The first connection portion 401 and the cover plate 11 are disposed in parallel, the first conductive segment 421 is perpendicular to the first connection portion 401, and the second conductive segment 422 is parallel to the first connection portion 401.

When the second connection part 402 is connected with the cap plate 11 and the case main body 12, the second connection part 402 may include a first conductive segment 421 and a second conductive segment 422, the first conductive segment 421 is connected with the first connection part 401, and the second conductive segment 422 is connected with the cap plate 11. The first conductive section 421 is attached to the inner wall of the cylinder 121, and the first conductive section 421 is welded to the inner wall of the cylinder 121. The second conductive segment 422 is connected to an end of the first conductive segment 421 away from the first connection portion 401, the second conductive segment 422 is attached to the inner surface of the cover 11, and the second conductive segment 422 and the cover 11 are welded. The second conductive segment 422 may be annular or arcuate. The first connection portion 401 and the cover plate 11 are disposed in parallel, the first conductive segment 421 is perpendicular to the first connection portion 401, and the second conductive segment 422 is parallel to the first connection portion 401.

The first connection fin 403 is disposed on a side of the first connection portion 401 away from the second connection portion 402, for example, when the first connection portion 401 has a fan-shaped or a fan-like structure, the first connection fin 403 may be disposed on an edge where a radius of the fan-shaped structure is located. The first connection fins 403 can increase the heat dissipation area of the first current collecting plate 141 on the one hand, so as to improve the heat dissipation capability of the first current collecting plate 141 during welding, and on the other hand, the first connection fins 403 are connected with the insulating member 143, so that the connection stability of the current collecting assembly 14 can be improved.

The insulator 143 is provided between the first and second current collecting plates 141 and 142 to insulate the first and second current collecting plates 141 and 142. In practical applications, in order to improve the insulation performance between the first current collecting plate 141 and the second current collecting plate 142, the thickness of the insulating member 143 is greater than the thickness of the first current collecting plate 141 and the second current collecting plate 142. The top surface of the insulating piece 143 protrudes out of the top surface of the first connecting portion 401, the top surface of the insulating piece 143 is a surface of the insulating piece 143 away from the battery cell 12, and the top surface of the first connecting portion 401 is a surface of the first connecting portion 401 away from the battery cell 12.

The first connection fins 403 at least partially cover the insulating member 143, and the first connection fins 403 and the first connection portions 401 are arranged in a staggered manner in a direction perpendicular to the first end surface of the main body of the battery cell 12. For example, the first collecting tray 141 may further include a transition portion having a bent shape, and the transition portion is connected to the first connection portion 401 and the first connection fin 403, respectively.

Further, the current collecting assembly 14 further includes a connector connecting the insulator 143 and the first connecting fin 403. For example, the connector is a hot melt pillar. A first through hole is provided on the first connection fin 403, a second through hole is provided on the insulating member 143, and the heat stake is connected to the first through hole and the second through hole. Of course, in practical applications, the connecting piece may also be a bolt, a rivet, a pin, or the like, which is not limited in this embodiment.

One or more first connection fins 403 are provided on the first connection portion 401, and when the plurality of first connection fins 403 are provided on the first connection portion 401, the plurality of first connection fins 403 are provided at intervals. For example, when the first connection portion 401 has a fan-shaped or approximately fan-shaped structure, at least one heat dissipation fin 403 is disposed on a first side of the first connection portion 401, and at least one first connection fin 403 is disposed on a second side of the first connection portion 401. The first side of the first connection portion 401 is one radius forming a sector, and the second side of the first connection portion 401 is another radius forming a sector.

The second current collecting plate 142 may include a third connection part 404 and a fourth connection part 405, the third connection part 404 is connected with the second tab 123, the fourth connection part 405 is connected with the third connection part 404, and the fourth connection part 405 is connected with the pole 13. For example, the third connecting portion 404 may have a fan-shaped or approximately fan-shaped structure, the fourth connecting portion 405 may have a cylindrical structure, and the fourth connecting portion 405 may be disposed concentrically with the third connecting portion 404. The first connecting portion 401 and the fourth connecting portion 405 are coaxially disposed.

Further, the second collecting tray 142 may further include a second connection fin connected to the third connection portion, and the second connection fin at least partially covers the insulator 143. The connection stability of the current collecting assembly can be improved through the second connection fin, and heat generated during welding of the fourth connection part 405 and the second electrode output end can be dissipated.

Wherein the first connection fin and the second connection fin are not in contact, and a distance between the first connection fin and the second connection fin is greater than a preset threshold value to ensure an electrical distance between the first connection fin and the second connection fin.

The battery 10 provided by the embodiment of the disclosure includes a housing 11, a battery core 12, a pole 13 and a current collecting assembly 14, the battery core 12 is disposed in the housing 11, the pole 13 is disposed on a cover plate 11 of the housing 11, the current collecting assembly 14 is disposed between the battery core 12 and the cover plate 11, the current collecting assembly 14 includes a first current collecting plate 141, a second current collecting plate 142 and an insulating member 143, the insulating member 143 is disposed between the first current collecting plate 141 and the second current collecting plate 142, the first current collecting plate 141 includes a first connecting portion 401, a second connecting portion 402 and a first connecting fin 403, the first connecting portion 401 is connected with the battery core 12, the second connecting portion 402 is connected with the first connecting portion 401, and the second connecting portion 402 is connected with the housing 11, the heat dissipation area of the first current collecting plate 141 is increased through the first connecting fin 403, the heat dissipation capacity of the current collecting assembly 14 is improved, the first connecting fin 403 extends to the insulating member 143 and is connected with the insulating member 143, and the connection stability of the current collecting assembly 14 is improved.

The exemplary embodiments of the present disclosure also provide a battery device, as shown in fig. 4, including a battery 10.

The battery 10 includes: the battery comprises a shell 11, a battery core 12, a pole 13 and a current collecting assembly 14, wherein the shell 11 is provided with a containing cavity, the shell 11 comprises a cover plate 11, and the cover plate 11 is positioned at one end of the containing cavity; the battery cell 12 is arranged in the accommodating cavity; the pole 13 is arranged on the cover plate 11; the current collecting assembly 14 is disposed between the battery core 12 and the cover plate 11, the current collecting assembly 14 includes a first current collecting plate 141, a second current collecting plate 142, and an insulating member 143, the insulating member 143 is disposed between the first current collecting plate 141 and the second current collecting plate 142, the first current collecting plate 141 includes a first connection portion 401, a second connection portion 402, and a first connection fin 403, the first connection portion 401 is connected with the battery core 12, the second connection portion 402 is connected with the first connection portion 401, and the second connection portion 402 is connected with the first electrode output, the first connection fin 403 extends from the first connection portion 401 to the insulating member 143, and the first connection fin 403 is connected with the insulating member 143, and the second current collecting plate 142 is connected with the battery core 12 and the second electrode output.

The battery device provided by the embodiment of the disclosure includes a battery 10, a battery core 12 is disposed in a housing 11 in the battery 10, a post 13 is disposed on a cover plate 11 of the housing 11, a current collecting assembly 14 is disposed between the battery core 12 and the cover plate 11, the current collecting assembly 14 includes a first current collecting plate 141, a second current collecting plate 142 and an insulating member 143, the insulating member 143 is disposed between the first current collecting plate 141 and the second current collecting plate 142, the first current collecting plate 141 includes a first connecting portion 401, a second connecting portion 402 and a first connecting fin 403, the first connecting portion 401 is connected with the battery core 12, the second connecting portion 402 is connected with the first connecting portion 401, and the second connecting portion 402 is connected with a first electrode output end, the first connecting fin 403 is connected with the first connecting portion 401, the heat dissipation area of the first current collecting plate 141 is increased through the first connecting fin 403, the heat dissipation capability of the current collecting assembly 14 is improved, the first connecting fin 403 extends to the insulating member 143, and is connected with the insulating member 143, the connection stability of the current collecting assembly 14 is improved, and the quality of the battery device is further improved.

Further, the battery device provided by the embodiment of the present disclosure may further include a case 20, a battery bracket 30, and a bus bar. The box 20 includes bottom plate and frame, and frame and bottom plate connect and form at least one battery compartment, and battery 10 locates in the battery compartment, and battery bracket 30 locates between bottom plate and the battery 10, and battery bracket 30 is used for the holding battery 10. The bus bars connect adjacent cells 10 in the case 20, and the bus bars are disposed at a side of the cells 10 away from the bottom plate.

By way of example, the frame may include a first side rail, a second side rail, a third side rail, and a fourth side rail, with the first side rail, the second side rail, the third side rail, and the fourth side rail being connected in sequence to form a rectangular or approximately rectangular frame, an intermediate rail being disposed within the frame, the intermediate rail dividing the frame into a plurality of battery compartments, the battery 10 and the battery bracket 30 being disposed within the battery compartments.

The battery bracket 30 is provided with a receiving recess in which the battery 10 is mounted. The end of the battery 10 where the cover 11 is provided is located away from the battery bracket 30. A plurality of rows of accommodating recesses may be provided on the battery bracket 30, and the accommodating recesses correspond to the batteries 10 one by one, that is, a plurality of rows of batteries 10 are provided on the battery bracket 30.

The bus bar may include a pole 13 connection portion and a case 11 connection portion, the pole 13 connection portion connecting the poles 13 of the first battery 10, the case 11 connection portion connecting the case 11 of the second battery 10, the first battery 10 and the second battery 10 being adjacent two batteries 10 in a row of batteries 10. The electrical connection of the battery 10 is achieved by means of a bus bar.

The battery device provided by the embodiment of the disclosure includes a battery 10, a battery core 12 is disposed in a housing 11 in the battery 10, a post 13 is disposed on a cover plate 11 of the housing 11, a current collecting assembly 14 is disposed between the battery core 12 and the cover plate 11, the current collecting assembly 14 includes a first current collecting plate 141, a second current collecting plate 142 and an insulating member 143, the insulating member 143 is disposed between the first current collecting plate 141 and the second current collecting plate 142, the first current collecting plate 141 includes a first connecting portion 401, a second connecting portion 402 and a first connecting fin 403, the first connecting portion 401 is connected with the battery core 12, the second connecting portion 402 is connected with the first connecting portion 401, and the second connecting portion 402 is connected with a first electrode output end, the first connecting fin 403 is connected with the first connecting portion 401, the heat dissipation area of the first current collecting plate 141 is increased through the first connecting fin 403, the heat dissipation capability of the current collecting assembly 14 is improved, the first connecting fin 403 extends to the insulating member 143, and is connected with the insulating member 143, the connection stability of the current collecting assembly 14 is improved, and the quality of the battery device is further improved.

The battery device provided by the embodiment of the disclosure can be applied to an electric vehicle, and when the battery device is used for the electric vehicle, the battery device can be a battery pack which is installed on the electric vehicle and provides energy for the electric vehicle.

In practice, the battery pack may be mounted to the frame of an electric vehicle. The battery pack can be fixedly connected with the frame. Or the battery pack can be a modularized battery pack which can be detachably connected to the vehicle body, so that the battery pack is convenient to replace.

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

Claims (12)

1. A battery, the battery comprising:

the shell is provided with a containing cavity, and comprises a cover plate, wherein the cover plate is positioned at one end of the containing cavity;

the battery cell is arranged in the accommodating cavity;

the pole is arranged on the cover plate;

the current collecting assembly is arranged between the battery cell and the cover plate and comprises a first current collecting disc, a second current collecting disc and an insulating piece, the insulating piece is arranged between the first current collecting disc and the second current collecting disc, the first current collecting disc comprises a first connecting part, a second connecting part and a first connecting fin, the first connecting part is connected with the battery cell, the second connecting part is connected with the first connecting part, the second connecting part is connected with a first electrode output end, the first connecting fin extends from the first connecting part to the insulating piece so that the first connecting fin at least partially covers the insulating piece, the first connecting fin is connected with the insulating piece, the second current collecting disc is connected with the battery cell and a second electrode output end, the first electrode output end is one of the shell and the pole, and the second electrode output end is the other of the shell and the pole.

2. The battery of claim 1, wherein the first electrode output section is the housing comprising:

a case body having an opening at one end thereof;

the cover plate is plugged at one end of the shell main body, which is provided with an opening;

wherein the second connecting part is connected with the shell main body and/or the cover plate.

3. The battery of claim 2, wherein the first connection portion is opposite the first end of the cell body;

the second connecting portion comprises a first conductive segment, the first conductive segment is connected with the first connecting portion, and at least part of the first conductive segment is attached to the shell main body.

4. The battery of claim 3, wherein the second connection portion further comprises:

the second conductive segment is connected to one end, far away from the first connecting portion, of the first conductive segment, and the second conductive segment is connected with the cover plate.

5. The battery of claim 1, wherein the first connecting fins and the first connecting portions are staggered in a direction perpendicular to the cover plate.

6. The battery of claim 5, wherein the current collecting assembly further comprises:

and the connecting piece is used for connecting the insulating piece and the first connecting fin.

7. The battery of claim 6, wherein the connector is a hot melt post.

8. The battery of claim 1, wherein the first current collecting plate includes a plurality of first connection fins, the plurality of first connection fins are connected to the first connection portions, respectively, and the plurality of first connection fins are disposed at intervals.

9. The battery of claim 1, wherein the cell comprises a cell body, a first tab and a second tab, the first tab and the second tab extending from an end of the cell body proximate to the cover plate, the first tab and the first connection portion being connected, the second tab and the second current collecting plate being connected.

10. The battery of claim 1, wherein the second current collecting plate comprises:

the third connecting part is connected with the battery cell;

the fourth connecting part is connected with the third connecting part and the second electrode output end;

and a second connecting fin connected to the third connecting portion, and at least partially covering the insulating member.

11. The battery of any one of claims 1-10, wherein the battery is a cylindrical battery.

12. A battery device, characterized in that it comprises a battery according to any one of claims 1-11.