CN218975720U - Battery, battery pack and vehicle - Google Patents

Abstract

The utility model discloses a battery, a battery pack and a vehicle, wherein the battery comprises: the shell is provided with an opening and is provided with a bending part, and the bending part is recessed from the shell to the inner side; the cover plate is arranged at the opening of the shell body and is used for closing the opening; the pole core is arranged in the shell; collector plate, collector plate includes: the collector plate main body is electrically connected with the pole core; the extension part is arranged on one side surface of the collector plate main body, which is away from the pole core, extends to one side of the cover plate and is arranged at intervals, and the extension part is connected with the bending part. From this, through setting up extension and apron interval, can prevent effectively to produce the interference between extension and the apron, be convenient for guarantee the sealed effect of apron in the opening part to can be connected the cooperation with the casing electricity with the utmost point core through the extension, the connection cooperation mode of collecting plate and kink in this application can increase the connection cooperation area of collecting plate and casing moreover, promotes the electricity between collecting plate and the casing and connects the reliability.

Description

Battery, battery pack and vehicle

Technical Field

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

Background

Currently, the pole pieces in a battery are connected to a case or terminal through a current collecting structure.

In the related art, a casing of the battery is provided with an opening structure, and the opening is shielded by arranging a cover plate structure at the opening, so that the sealing of the casing structure is realized. However, the current collecting structure in the battery is arranged close to the cover plate, and the risk of interference with the cover plate exists, so that the sealing effect of the cover plate is affected, and the sealing difficulty of the battery at the cover plate is increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery having good sealability.

A battery according to an embodiment of the first aspect of the present utility model includes: a housing provided with an opening, and formed with a bent portion recessed inward from the housing; the cover plate is arranged at the opening of the shell and is used for closing the opening; the pole core is arranged in the shell; a collector plate, the collector plate comprising: the collector plate main body is electrically connected with the pole core; the extension part is arranged on one side surface of the collector plate main body, which is away from the pole core, extends from the collector plate main body to one side of the cover plate and is arranged at intervals with the cover plate, and the extension part is connected with the bending part.

According to the battery provided by the embodiment of the utility model, the extending part and the cover plate are arranged at intervals, so that interference between the extending part and the cover plate can be effectively prevented, the sealing effect of the cover plate at the opening can be ensured, the electrode core can be electrically connected and matched with the shell through the extending part, in addition, the connection and matching mode of the current collecting plate and the bending part can increase the connection and matching area of the current collecting plate and the shell, and the electrical connection effect and connection reliability between the current collecting plate and the shell are improved.

According to some embodiments of the utility model, the housing comprises a housing body, the bending portion is provided at an end of the housing body, the bending portion comprises: and a bending wall which is bent inward from the case main body.

According to some embodiments of the utility model, the extension is disposed in close proximity to at least a portion of the folded wall and is electrically connected to the folded wall.

According to some embodiments of the utility model, the housing further includes a mounting portion for mounting the cover plate, and the mounting portion is connected to the bending portion and is formed with the opening.

According to some embodiments of the utility model, the bend further comprises a transition section connected between the bending wall and the mounting section.

According to some embodiments of the utility model, the mounting portion comprises: the first turning plate is connected with the transition section and extends to the outer side of the battery from the transition section; the connecting wall is connected with the first turning plate; the second turning plate is connected with the connecting wall and extends from the connecting wall to the inner side of the battery, the second turning plate is opposite to the first turning plate, and the second turning plate forms the opening.

According to some embodiments of the utility model, the second flap, the connecting wall and the first flap define a mounting slot in which the cover plate is mounted; the battery also comprises a sealing element which is arranged in the mounting groove and is used for enabling the cover plate to be in sealing connection with the mounting part.

According to some embodiments of the utility model, the seal is configured as a sealing ring which is sleeved on the cover plate in the circumferential direction and is sandwiched between the mounting portion and the cover plate.

According to some embodiments of the utility model, the extension is in abutting engagement with an inner wall surface of the transition section; and/or the extension portion is engaged with at least a portion of the folded wall.

According to some embodiments of the utility model, in a vertical cross section, the folded wall extends in a straight line, an included angle between the folded wall and a side wall of the shell body is α, and the relationship is satisfied: alpha is more than or equal to 90 degrees and less than or equal to 135 degrees.

According to a second aspect of the present utility model, a battery pack includes the above battery.

According to an embodiment of the third aspect of the present utility model, the vehicle includes the battery pack described above.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a sectional view of a battery according to a first embodiment of the present utility model;

FIG. 2 is a partial schematic view of a housing according to a first embodiment of the utility model;

fig. 3 is a cross-sectional view of a battery according to a second embodiment of the present utility model;

fig. 4 is a cross-sectional view of a collector plate according to a second embodiment of the present utility model;

fig. 5 is a sectional view of a battery according to a third embodiment of the present utility model.

Reference numerals:

battery 100,

The shell 10, the bending part 11, the bending wall 111, the transition section 113, the mounting part 12, the connecting wall 121, the second turning plate 122, the opening 123, the first turning plate 124, the mounting groove 13, the top wall 14, the side wall 15,

A cover plate 20, an explosion mark 21, a liquid injection hole 22, a sealing cover 23,

A pole core 30, a first pole lug 31, a second pole lug 32,

Collector plate 40, collector plate body 41, extension 42, seal 50,

First insulator 61, second insulator 62, third insulator 63, terminal 70, current collector 80, and connecting piece 90.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A battery 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.

The battery 100 according to the embodiment of the present utility model includes a case 10, a cap plate 20, a tab 30, and a collector plate 40.

Referring to fig. 1, 3 and 5, the case 10 is provided with an opening 123, and a bent portion 11 is formed at the case 10 adjacent to the opening 123, the bent portion 11 being recessed inward from the case 10. The cover plate 20 is disposed at the opening 123 of the case 10, and the cover plate 20 serves to close the opening 123 to form a closed accommodating space with the case 10, and the pole core 30 is disposed in the accommodating space formed by the case 10 and the cover plate.

Referring to fig. 1, the collector plate 40 includes: the current collecting plate body 41 and the extension 42, the current collecting plate body 41 is electrically connected with the pole core 30, the extension 42 is provided on a side surface of the current collecting plate body 41 facing away from the pole core 30, and the extension 42 extends from the current collecting plate body 41 to the cover plate 20 side and is provided at a distance from the cover plate 20, and the extension 42 is connected with the bending part 11 to electrically connect the pole core 30 with the case 10 through the current collecting plate 40.

The electrode core 30 includes an electrode core 30 main body and an electrode tab, and the collector plate main body 41 is electrically connected to the electrode tab, and is connected to the bent portion 11 through the extension portion 42, thereby electrically connecting the electrode core 30 to the case 10.

Wherein the bent portion 11 is recessed toward the inside of the case 10 such that the bent portion 11 may be disposed opposite to at least a portion of the collector plate 40 in the vertical direction (i.e., up-down direction in fig. 1), and the bent portion 11 is disposed at a distance from the collector plate 40 in the vertical direction. The extension 42 extends downward from the collector plate body 41, and the extension 42 is connected with at least part of the inner wall surface of the bent portion 11 to electrically connect the collector plate body 41 with the case 10 through the extension 42. The "inner side" mentioned above refers to the side of the housing 10 near the pole core 30.

It is understood that the bent portion 11 recessed inward is provided on the case 10, and the bent portion 11 is provided corresponding to the collector plate body 41, thereby facilitating the electrical connection of the collector plate 40 with the case 10. Compared with the shell structure without the bending part 11, the connecting and matching mode of the extending part 42 and the bending part 11 can increase the connecting and matching area of the current collecting plate 40 and the shell 10, thereby improving the overcurrent effect.

Further, referring to fig. 1, the end of the extension 42 is spaced apart from the cover plate 20 in the vertical direction to prevent interference between the extension 42 and the cover plate 20, affecting the sealing effect at the cover plate 20.

As shown in fig. 1, the bent portion 11 is formed adjacent to the opening 123, and the extension portion 42 extends downward from the collector plate body 41 to a position suitable for connection-fitting with the bent portion 11 and is electrically connected with the bent portion 11. If the downward extension length of the extension portion 42 is too large, there is a problem that the extension portion 42 interferes with the cover plate 20, and the sealing effect at the cover plate 20 is affected.

In the related art, the current collecting structure in the battery 100 is connected to the cap plate 20, thereby affecting the sealing effect at the cap plate 20 and increasing the difficulty of sealing the battery 100 at the cap plate 20.

In this application, through setting up extension 42 and apron 20 interval, can prevent effectively to produce the interference between extension 42 and the apron 20 to guarantee the sealed effect of apron 20 in opening 123 department, and can be with pole piece 30 and casing 10 electricity connection cooperation through extension 42, the connection cooperation mode of collecting plate 40 and kink 11 in this application can increase collecting plate 40 and casing 10's connection cooperation area moreover, promotes the electricity connection effect and the connection reliability between collecting plate 40 and the casing 10.

As shown in fig. 1, in some embodiments of the present utility model, a housing 10 includes a housing main body, a bent portion 11 is provided at an end of the housing main body, and the bent portion 11 includes: the bending wall 111, the bending wall 111 is bent inward from the case main body.

As shown in fig. 1, the case body includes a side wall 15 and a top wall 14, the top wall 14 is connected to an upper end of the side wall 15, and the bent portion 11 is provided at a lower end of the side wall 15.

Referring to fig. 1, the case body is constructed in a column structure and is disposed corresponding to the pole core 30, and the bent portion 11 is disposed at a lower end of the case body, i.e., the bent portion 11 is located at a position in the case 10 not corresponding to the pole core 30, to prevent interference between the bent portion 11 and the pole core 30, such as: the bent portion 11 presses the pole core 30 and the like.

Wherein the bending wall 111 is bent inward and disposed opposite to at least a portion of the collector plate body 41, thereby facilitating the connection and fitting of the extension portion 42 with the bending portion 11.

As shown in fig. 1, in some embodiments of the present utility model, the extension portion 42 is engaged with at least a portion of the folded wall 111 and is electrically connected to the folded wall 111, so as to increase the contact area between the collector plate 40 and the housing 10, and improve the connection effect between the collector plate 40 and the housing 10.

Referring to fig. 1, the extension portion 42 extends downward from the collector plate body 41 to the bending wall 111, and extends downward along the extending direction of the bending wall 111 after being fitted with the bending wall 111, so as to increase the contact area between the extension portion 42 and the bending wall 111, and improve the connection effect between the extension portion 42 and the bending portion 11.

In some embodiments of the present utility model, as shown in fig. 1, 3 and 5, the bent portion 11 further includes a transition section 113, the transition section 113 is connected between the bent wall 111 and the mounting portion 12, and an arc-shaped opening of the transition section 113 faces the outside of the battery 100.

As shown in fig. 1, 3 and 5, in some embodiments of the present utility model, the housing 10 further includes a mounting portion 12, the mounting portion 12 is used for mounting the cover 20, and the mounting portion 12 is connected to the bending portion 11 and is formed with the opening 123.

Further, the mounting portion 12 includes a first flap 124, a connecting wall 121, and a second flap 122, the first flap 124 being connected to the transition section 113 and extending from the transition section 113 to the outside of the battery, the connecting wall 121 being connected to the first flap 124; the second flap 122 is connected to the connection wall 121 and extends from the connection wall 121 toward the inside of the battery 100, the second flap 122 is disposed opposite to the first flap 124, and the second flap 122 forms an opening 123.

Wherein the transition section 113 is configured as an arc-shaped transition section, and an opening of the arc-shaped transition section faces the outside of the battery 100.

It will be appreciated that by providing the transition section 113 between the bending wall 111 and the first flap 124, stress concentration at the connection transition of the bending wall 111 and the first flap 124 can be effectively prevented, and the structural strength at the bending portion 11 can be improved.

In a further embodiment of the present utility model, the extension 42 is engaged with the inner wall surface of the transition section 113 to electrically connect the extension 42 with the bent portion 11. Referring to fig. 2 and 3, the extension 42 extends from the collector plate body 41 from the top downward, and the extension 42 is in lap-fit with the transition section 113.

Further, referring to fig. 1, the extension portion 42 is further attached to at least a portion of the folded wall 111, that is, the extension portion 42 is connected to the folded wall 111 and the transition portion 113 of the folded portion 11 at the same time, so that the contact and matching area between the extension portion 42 and the folded portion 11 can be further increased, and the electrical connection effect between the extension portion 42 and the folded portion 11 is improved.

It should be noted that, the extension portion 42 and the bending portion 11 are fixedly connected by at least one of welding, abutting and bonding, the connection mode is simple, and the electrical connection effect between the extension portion 42 and the bending portion 11 can be ensured.

As shown in fig. 2, in some embodiments of the present utility model, in a cross section in a vertical direction, the bending wall 111 extends in a straight line, an included angle between the bending wall 111 and the side wall 15 of the case body is α, and the relationship is satisfied: alpha is more than or equal to 90 degrees and less than or equal to 135 degrees.

It is understood that the height dimension of the bent portion 11 can be reduced by bending the bent wall 111 inward, so that the overall height of the battery 100 can be reduced, the space utilization of the battery 100 can be improved, and the energy density of the battery 100 can be improved.

Referring to fig. 3 and 5, the angle between the folded wall 111 and the side wall 15 of the case body is 90 °, and at this time, the height dimension of the folded portion 11 can be sufficiently reduced while ensuring the corresponding effect of the folded wall 111 and the collector plate body 41, thereby reducing the overall height of the battery 100.

Referring to fig. 1, a bent portion 11 is formed at a position of the case 10 adjacent to an opening 123, and the opening 123 is formed with a mounting portion 12, the mounting portion 12 being for mounting a cover 20 and shielding the opening 123 by the cover 20.

Wherein, the connecting wall 121 is connected with the first turning plate 124, the second turning plate 122 is connected with the connecting wall 121, and the second turning plate 122 extends from the connecting wall 121 to the inner side of the battery 100, the second turning plate 122 is opposite to the first turning plate 124, and an opening 123 is formed at the second turning plate 122.

Further, the connection wall 121 is configured as an arc-shaped connection section whose opening is directed toward the inside of the case 10 so as to form the second flap 122 which is bent and extended inward, and the cover plate 20 may be interposed between the first flap 124 and the second flap 122. The opening 123 is defined by an inner peripheral edge of the second flap 122, and when the cover 20 is sandwiched between the first flap 124 and the second flap 122, the cover 20 can sufficiently shield the opening 123 to close the opening 123 of the housing 10.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the second flap 122, the connection wall 121, and the first flap 124 define the mounting groove 13, the cap plate 20 is mounted in the mounting groove 13, and the battery 100 further includes a sealing member 50 disposed in the mounting groove 13, and the sealing member 50 may make contact between the cap plate 20 and the case 10 more tight, thereby making the sealing performance of the battery better.

It will be appreciated that the housing 10 needs to have good sealing properties to prevent electrolyte within the housing 10 from escaping or air outside the housing 10 from entering the housing 10. Thus, the sealing effect between the cover plate 20 and the case 10 needs to be improved.

In this application, the second turning plate 122 is disposed opposite to the first turning plate 124, and the second turning plate 122 is connected with the first turning plate 124 through the connecting wall 121, so as to keep the second turning plate 122 and the first turning plate 124 disposed at intervals in the vertical direction, thereby reserving the installation space of the cover plate 20 and forming the installation slot 13.

Further, the sealing member 50 is disposed in the mounting groove 13, and the sealing member 50 is used for sealing connection between the cover plate 20 and the mounting portion 12, so as to seal the opening 123 of the housing 10, prevent air from entering the housing 10 through the gap between the cover plate 20 and the sealing member 50 or between the sealing member 50 and the mounting portion 12, and promote the sealing effect of the housing 10.

The sealing element 50 may be used to seal at least one of the cover plate 20 and the second flap 122, the cover plate 20 and the connecting wall 121, and the cover plate 20 and the first flap 124, so as to fill a gap between the cover plate 20 and the mounting portion 12 by the sealing element 50, thereby realizing sealing.

In a specific embodiment of the utility model, as shown in fig. 1, the sealing element 50 is configured as a sealing ring which is fitted over the cover plate 20 in the circumferential direction and which is clamped between the mounting portion 12 and the cover plate 20 in order to provide a sealing connection between the cover plate 20 and the mounting portion 12.

The sealing member 50 is configured as a sealing ring, and the sealing ring is formed with a groove structure opened to the inner side, the cross section of the groove structure is U-shaped, and the outer circumferential edge of the cover plate 20 is embedded in the groove structure. When the cover plate 20 and the seal 50 are installed in the installation groove 13, a seal ring is provided between the cover plate 20 and the installation portion 12 (i.e., between the cover plate 20 and the second flap 122, between the cover plate 20 and the connection wall 121, and between the cover plate 20 and the first flap 124) to sufficiently seal the cover plate 20 and the installation portion 12.

As shown in fig. 1, in some embodiments of the present utility model, the cap plate 20 is provided with an explosion vent 21, the explosion vent 21 is formed at an outer surface of the cap plate 20, and the explosion vent 21 is recessed inward in a thickness direction from the outer surface of the cap plate 20 (i.e., a side surface of the cap plate 20 facing away from the pole core 30). When the internal pressure of the battery 100 is excessively large, the pressure of the battery 100 can be relieved through the explosion-proof mark 21.

In some alternative embodiments of the present utility model, the blast 21 extends in an arc on the outer surface of the cover plate 20. It should be noted that the explosion-proof mark 21 may be configured in other shapes, such as: arc, straight, etc., and are not particularly limited herein.

In some embodiments of the present utility model, the cover 20 is provided with a liquid injection hole 22, and the liquid injection hole 22 is provided to penetrate in the thickness direction of the cover 20, and electrolyte can be injected into the case 10 through the liquid injection hole 22.

Further, the battery 100 further includes a sealing cover 23, and the sealing cover 23 is disposed on the liquid injection hole 22, so as to seal the liquid injection hole 22 by the sealing cover 23, thereby sealing the liquid injection hole 22.

As shown in fig. 1, in some embodiments of the present utility model, the tab 30 includes a first tab 31 and a second tab 32, the first tab 31 is disposed at a lower end of the tab 30 (i.e., a side of the tab 30 facing the opening 123), and the first tab 31 is electrically connected with the collector plate 40 to electrically connect the first tab 31 with the case 10 through the collector plate 40; the second tab 32 is disposed at the upper end of the pole core 30, and the second tab 32 is electrically connected with the current collecting plate 80. The second tab 32 may be electrically connected to the current collecting plate 80 by welding, abutting or bonding.

In some embodiments of the present utility model, the electrode core 30 is formed by winding a pole piece and a diaphragm, and a plurality of first tabs 31 are formed at the lower end of the electrode core 30, the plurality of first tabs 31 are arranged from inside to outside around the winding direction of the pole piece, and the current collecting plate 40 can be simultaneously electrically connected with the first tabs 31 located in the inner ring and the first tabs 31 located in the outer ring, so that the consistency of the overcurrent of the plurality of first tabs 31 is maintained, the occurrence of the phenomenon of lithium precipitation caused by local overcurrent is avoided, and the safety of the battery 100 is improved.

In a further embodiment of the present utility model, the battery 100 further includes a terminal 70, the terminal 70 being electrically connected to the current collector plate 80 and penetrating the top wall 14 of the case 10. Wherein the top wall 14 is provided with a through hole, the lower end of the terminal 70 is electrically connected with the current collecting plate 80, and the terminal 70 is penetrated through the through hole. Wherein the terminal 70 has an "i" shape in cross section.

In some embodiments of the present utility model, battery 100 further includes a first insulator 61 and a second insulator 62, first insulator 61 being disposed between the upper surface of top wall 14 and terminal 70; the second insulating member 62 is provided between the inner peripheral wall of the through hole and the terminal 70 and between the lower surface of the top wall 14 and the terminal 70. Therefore, the first insulating member 61 and the second insulating member 62 insulate and protect the terminal 70 from the top wall 14, prevent the terminal 70 from contacting the top wall 14, avoid the short circuit of the battery 100, and improve the safety and reliability of the battery 100.

In some embodiments of the present utility model, the battery 100 further includes a connecting piece 90, the connecting piece 90 is disposed in the housing 10, the connecting piece 90 is sleeved on the terminal 70, and at least a portion of the second insulating member 62 is sandwiched between the connecting piece 90 and the top wall 14. Wherein the connection piece 90 is constructed of a metal sheet, and the terminal 70 is electrically connected to the connection piece 90 and is riveted and fixed to the connection piece 90.

In some embodiments of the present utility model, the battery 100 further includes a third insulating member 63, and the third insulating member 63 is disposed between the electrode core 30 and the case 10 to prevent contact between the current collecting plate 80 or the second tab 32 of the electrode core 30 and the case 10, and to prevent the battery 100 from being shorted.

Referring to fig. 1, in particular, a portion of the third insulator 63 is disposed between the current collecting plate 80 and the top wall 14, and another portion of the third insulator 63 is disposed between the current collecting plate 80 and the side wall 15, and the second tab 32 and the side wall 15 to prevent the second tab 32 from being electrically connected with the case 10.

Referring to fig. 1, a cross-sectional view of a battery 100 according to a first embodiment of the present utility model is shown in fig. 1:

the included angle between the bending wall 111 and the side wall 15 is an obtuse angle, and the connection between the extension portion 42 and the collector plate main body 41 is opposite to the bending wall 111 in the vertical direction, and the extension portion 42 extends downwards from the collector plate main body 41 in a curve and further extends in the same direction as the extending direction of the bending wall 111 after extending to the bending wall 111 so as to be in fit with the bending wall 111. At the same time, at least part of the extension 42 extends to a position where it is attached to the transition section 113, so as to enhance the electrical connection effect of the collector plate 40 and the case 10.

Referring to fig. 3, a cross-sectional view of a battery 100 according to a second embodiment of the present utility model is shown in fig. 3:

the angle between the bending wall 111 and the side wall 15 is a right angle, and the extension 42 extends straight downward from the collector plate body 41, the angle between the extension direction of the extension 42 and the collector plate body 41 is 90 °, that is, the extension direction of the extension 42 is perpendicular to the collector plate body 41, and the extension 42 is attached to the transition section 113, so as to electrically connect the collector plate 40 with the housing 10.

At least a portion of the inner wall surface of the transition section 113 is configured as a straight line section, and the straight line section is used as a connection and matching position of the extension portion 42 and the bending portion 11, so as to facilitate connection between the extension portion 42 and the transition section 113.

Referring to fig. 5, a cross-sectional view of a battery 100 according to a third embodiment of the present utility model is shown in fig. 5:

the angle between the folded wall 111 and the side wall 15 is a right angle, and the extension 42 extends downward in a curve from the collector plate body 41, the extension direction of the extension 42 is an acute angle with the angle between the collector plate body 41, and the extension 42 is attached to the transition section 113, so as to electrically connect the collector plate 40 with the housing 10.

At least a portion of the inner wall surface of the transition section 113 is configured as a straight line section, and the straight line section is used as a connection and matching position of the extension portion 42 and the bending portion 11, so as to facilitate connection between the extension portion 42 and the transition section 113.

According to the battery pack provided by the embodiment of the utility model, the battery pack comprises the battery 100, the battery 100 has good sealing performance and good overcurrent capacity, and the battery 100 can be prevented from polarization or lithium precipitation, so that the reliability and the safety of the battery pack can be improved.

According to the vehicle disclosed by the embodiment of the utility model, the vehicle comprises the battery pack, and the battery pack is used for providing electric energy for the vehicle.

The following are fused as needed to be written in the writing process to explain the relevant content:

in the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A battery, comprising:

a housing (10), wherein the housing (10) is provided with an opening (123), and the housing (10) is formed with a bending portion (11), and the bending portion (11) is recessed inward from the housing (10);

a cover plate (20), wherein the cover plate (20) is arranged at an opening (123) of the shell (10) and is used for closing the opening (123);

a pole piece (30), wherein the pole piece (30) is arranged in the shell (10);

a collector plate (40), the collector plate (40) comprising:

a collector plate main body (41), wherein the collector plate main body (41) is electrically connected to the pole piece (30);

extension (42), extension (42) are located collector plate main part (41) deviate from the one side surface of utmost point core (30), and from collector plate main part (41) to apron (20) one side extend and with apron (20) interval setting, just extension (42) with kink (11) link to each other.

2. The battery according to claim 1, wherein the case (10) includes a case main body, the bent portion (11) is provided at an end of the case main body, and the bent portion (11) includes: and a folded wall (111), wherein the folded wall (111) is folded inwards from the shell main body.

3. The battery according to claim 2, characterized in that the extension (42) is provided in a fitting manner with at least part of the folded wall (111) and is electrically connected with the folded wall (111).

4. The battery according to claim 2, wherein the case (10) further includes a mounting portion (12), the mounting portion (12) is for mounting the cover plate (20), and the mounting portion (12) is connected to the bent portion (11) and is formed with the opening (123).

5. The battery according to claim 4, characterized in that the bending part (11) further comprises a transition section (113), the transition section (113) being connected between the bending wall (111) and the mounting part (12).

6. The battery according to claim 5, wherein the mounting portion (12) includes:

a first flap (124), the first flap (124) being connected to the transition section (113) and extending from the transition section (113) to the outside of the battery;

-a connecting wall (121), the connecting wall (121) being connected to the first flap (124);

the second turning plate (122), the second turning plate (122) with connecting wall (121) links to each other, and from connecting wall (121) are to battery inboard extension, second turning plate (122) with first turning plate (124) set up relatively, just second turning plate (122) form opening (123).

7. The battery according to claim 6, characterized in that the second flap (122), the connecting wall (121) and the first flap (124) define a mounting slot (13), the cover plate (20) being mounted within the mounting slot (13);

the battery further comprises a sealing member (50), wherein the sealing member (50) is arranged in the mounting groove (13) and is used for enabling the cover plate (20) to be in sealing connection with the mounting part (12).

8. The battery according to claim 7, characterized in that the sealing member (50) is configured as a sealing ring which is fitted over the cover plate (20) in the circumferential direction and is interposed between the mounting portion (12) and the cover plate (20).

9. The battery according to claim 5, wherein the extension (42) is in abutting engagement with an inner wall surface of the transition section (113);

and/or the extension (42) is in abutting engagement with at least part of the folded wall (111).

10. The battery according to claim 2, characterized in that, in a section in the vertical direction, the folded wall (111) extends in a straight line, the angle between the folded wall (111) and the side wall (15) of the case body is α, and satisfies the relation: alpha is more than or equal to 90 degrees and less than or equal to 135 degrees.

11. A battery pack comprising the battery of any one of claims 1-10.

12. A vehicle comprising the battery pack of claim 11.

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