CN211125872U

CN211125872U - Battery cell, battery pack with battery cell and vehicle

Info

Publication number: CN211125872U
Application number: CN202020131739.7U
Authority: CN
Inventors: 娄佳训; 渠雁晓; 史百胜; 高顺航; 于贺; 马远
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-07-28
Anticipated expiration: 2030-01-20

Abstract

The utility model discloses an electricity core and have its battery package and vehicle. This electricity core includes: utmost point group, casing subassembly and positioner, the casing subassembly includes: casing body and bottom plate, casing body form that one end has the open-ended cavity, and utmost point group is suitable for to place at this internally at the casing, and the bottom plate is located between the bottom of utmost point group and the casing body, and positioner is located at least partially between the circumference of utmost point group and the casing body. According to the utility model discloses an electricity core, positioner can fill between the circumference of utmost point group and casing body, consequently can effectively reduce or cancel the clearance between utmost point group and the casing body, consequently, can fix a position the position of utmost point group to can effectively reduce the range of motion that electric core utmost point was organized in the use, and then reduce the bottom plate and organize the removal with utmost point and produce the friction and damage the risk of utmost point group's pole piece, thereby guarantee the operational reliability and the security height of electric core.

Description

Battery cell, battery pack with battery cell and vehicle

Technical Field

The utility model relates to a battery technology field particularly, relates to an electricity core and have its battery package and vehicle.

Background

When the electricity core is in production assembly, in order to improve assembly efficiency, have certain clearance between utmost point group and the casing body and between bottom plate and the casing body, because the existence in this clearance, electric core in the use, the friction of bottom plate and utmost point group has the risk of damaging utmost point group pole piece, if utmost point insulating failure of group simultaneously, the side that utmost point group contacted casing body has the risk of taking place the short circuit.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides an electric core has positioner in this electric core, and positioner can fix a position the position of utmost point group and casing body, guarantees the security height of electric core.

The utility model also provides a battery package of having above-mentioned electric core.

The utility model also provides a vehicle of having above-mentioned battery package.

According to the utility model discloses electric core includes: utmost point group, casing subassembly and positioner, the casing subassembly includes: the shell comprises a shell body and a bottom supporting plate, wherein the shell body is formed into a hollow cavity with an opening at one end, the pole group is suitable for being placed in the shell body, the bottom supporting plate is located between the bottom of the pole group and the shell body, and the positioning device is at least partially located between the circumferential direction of the pole group and the shell body.

According to some embodiments of the invention, the positioning device comprises: and the circumferential gasket is suitable for sleeving the pole group and is attached to the inner wall of the shell body.

Further, an insulating film is arranged on the inner wall of the circumferential gasket facing the pole group and/or the outer wall of the circumferential gasket facing the shell body.

Specifically, the positioning device further includes: the bottom gasket is positioned between the bottom of the pole group and the shell body, and is provided with a bottom supporting plate placing opening, and the bottom supporting plate is suitable for being placed in the bottom supporting plate placing opening.

Further, the circumferential gasket is fixedly connected with the bottom gasket.

In particular, the circumferential gasket is integrally formed with the bottom gasket.

In particular, the positioning means is formed as a soft insulator.

Specifically, the housing assembly further comprises: the battery cell cover plate is suitable for plugging the opening of the shell body, and the pole group is electrically connected with the battery cell cover plate.

The utility model discloses electric core has following characteristics:

the positioning device can be filled between the circumferential direction of the pole group and the shell body, so that the gap between the pole group and the shell body can be effectively reduced or eliminated, therefore, the position of the pole group can be positioned, the moving amplitude of the pole group of the battery cell in the use process can be effectively reduced, the risk that the bottom support plate and the pole group move to generate friction and damage pole pieces of the pole group is reduced, and even if the pole group expands and generates acting force on the side surface of the shell body when in use, the positioning device between the circumferential direction of the pole group and the shell body can buffer the pole group, and the working reliability and the safety of the battery cell are ensured.

According to the utility model discloses another aspect embodiment's battery package, including foretell electric core.

According to another aspect embodiment of the present invention, a vehicle includes the above battery pack.

Additional aspects and advantages of the invention 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 invention.

Drawings

Fig. 1 is a schematic diagram of the disassembly of a cell;

FIG. 2 is a perspective view of the positioning device;

fig. 3 is a schematic top view of the positioning device.

Reference numerals:

the battery cell comprises a battery cell 10, a pole group 1, a shell assembly 2, a shell body 21, a bottom support plate 22, a battery cell cover plate 23, a positioning device 3, a circumferential gasket 31, a bottom gasket 32 and a bottom support plate placing opening 33.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes the battery cell 10 according to an embodiment of the present invention in detail with reference to fig. 1 to 3.

Referring to fig. 1, an electrical core 10 according to an embodiment of the present invention includes: utmost point group 1, casing subassembly 2 and positioner 3, casing subassembly 2 includes: the electrode group comprises a shell body 21 and a bottom support plate 22, wherein the shell body 21 is formed into a hollow cavity with an opening at one end, the electrode group 1 is suitable for being placed in the shell body 21, the bottom support plate 22 is located between the bottom of the electrode group 1 and the shell body 21, and the positioning device 3 is at least partially located between the circumferential direction of the electrode group 1 and the shell body 21.

That is to say, the positioning device 3 can be filled between the circumferential direction of the pole group 1 and the casing body 21, so that the gap between the pole group 1 and the casing body 21 can be effectively reduced or eliminated, and therefore, the position of the pole group 1 can be positioned, so that the moving amplitude of the pole group 1 in the use process of the battery cell 10 can be effectively reduced, further, the risk that the bottom support plate 22 and the pole group 1 move to generate friction to damage the pole piece of the pole group 1 is reduced, and even if the pole group 1 expands and generates acting force on the side surface of the casing body 21 when in use, the positioning device 3 between the circumferential direction of the pole group 1 and the casing body 21 can buffer the pole group, so that the working reliability and the safety of the battery cell 10 are ensured.

According to the utility model discloses electric core 10, positioner 3 can be filled between the circumference of utmost point group 1 and casing body 21, consequently can effectively reduce or cancel the clearance between utmost point group 1 and casing body 21, consequently, can fix a position utmost point group 1's position, thereby can effectively reduce electric core 10 the range of movement of utmost point group 1 in the use, and then reduce bottom plate board 22 and the movement of utmost point group 1 and produce the risk of friction and damage utmost point group 1 pole piece, and, even if produce the effort to casing body 21's side when the inflation of utmost point group 1 takes place and uses, positioner 3 that is in between utmost point group 1's circumference and casing body 21 can cushion it, thereby guarantee electric core 10's operational reliability and security height.

Further, as shown in fig. 2 to 3, the positioning device 3 may include: circumferential gasket 31, circumferential gasket 31 is suitable for the cover to establish on utmost point group 1 and with the inner wall laminating of casing body 21, thereby guarantee that positioner 3 can fix a position utmost point group 1 upwards in circumference, and circumferential gasket 31 still is suitable for the inner wall laminating with casing body 21, consequently, circumferential gasket 31 can cancel the clearance between utmost point group 1's circumference and casing body 21 completely, thereby guarantee that utmost point group 1 is located the stability of casing body 21 is good, and then be favorable to reducing the friction between utmost point group 1 and the bottom plate 22, guarantee the security height of electric core 10.

Further, an inner wall of the circumferential gasket 31 facing the pole group 1 and/or an outer wall facing the case body 21 is provided with an insulating film.

In the specific embodiment, the case body 21 is an aluminum case, and therefore, the insulating film is disposed on the inner wall and/or the outer wall of the circumferential gasket 31, so that a short circuit phenomenon between the pole group 1 and the case body 21 can be effectively prevented.

Specifically, as shown in fig. 2 to 3, the positioning device 3 may further include: a bottom gasket 32, the bottom gasket 32 being located between the bottom of the pole set 1 and the housing body 21, and the bottom gasket 32 being provided with a bottom pallet seat 33, the bottom pallet 22 being adapted to be placed in the bottom pallet seat 33.

That is, the bottom washer 32 may reduce or eliminate the gap between the bottom plate 22 and the housing body 21 so that the bottom plate 22 may be positioned.

Therefore, through setting up circumference packing ring 31, can fix a position the position between the circumference of utmost point group 1 and casing body 21, through setting up bottom packing ring 32, can fix a position between bottom plate 22 and casing body 21, thereby can realize fixing a position the effect of utmost point group 1 and bottom plate 22, make utmost point group 1 can not be impaired, simultaneously because positioner 3 keeps apart utmost point group 1 and casing body 21's side and bottom, the contact of the reduction utmost point group 1 that can be very big and casing body 21 side, reduce the risk of taking place the short circuit.

Further, as shown in fig. 1 to 3, the circumferential gasket 31 is fixedly connected with the bottom gasket 32.

Preferably, the peripheral gasket 31 is integrally formed with the bottom gasket 32.

In a specific embodiment, the shape and size of the positioning device 3 may be determined according to the shape and size of the gap between the housing body 21 and the pole group 1 and the bottom bracket plate 22, so as to ensure that the positioning device 3 can effectively position the pole group 1 and the bottom bracket plate 22.

In a specific embodiment, when assembling the battery cell 10, the positioning device 3 is only directly placed at the bottom of the casing body 21, and then the bottom support plate 22 and the pole group 1 are sequentially placed.

Specifically, the positioning device 3 is formed as a soft insulator, so that the positioning device 3 can not only isolate the pole group 1 from the side and the bottom of the housing body 21, effectively reduce the possibility of contact between the pole group 1 and the side of the housing body 21, and reduce the risk of short circuit, but also play a certain role in buffering and protecting the expansive force generated by the pole group 1 and the force generated by the side of the housing body 21 during use.

Further, the positioning device 3 may also have good electrolyte resistance, so that it may be ensured that if the pole group 1 leaks, the positioning device 3 may not be corroded, thereby preventing a short circuit between the pole group 1 and the case body 21.

In a particular embodiment, the positioning device 3 may be made of fluororubber.

Specifically, the housing assembly 2 further includes: the battery cell cover plate 23 is located above the casing body 21, the opening of the casing body 21 is located above the casing body 21, the battery cell cover plate 23 is suitable for plugging the opening of the casing body 21, and the pole group 1 is electrically connected with the battery cell cover plate 23, so that the overall sealing of the battery cell 10 is realized.

According to another aspect of the present invention, a battery pack includes the above-mentioned battery cell 10.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A battery cell, comprising:

a pole group (1);

a housing assembly (2), the housing assembly (2) comprising: the electrode group comprises a shell body (21) and a bottom supporting plate (22), wherein the shell body (21) is formed into a hollow cavity with an opening at one end, the electrode group (1) is suitable for being placed in the shell body (21), and the bottom supporting plate (22) is located between the bottom of the electrode group (1) and the shell body (21);

a positioning device (3), the positioning device (3) being located at least partially between the circumferential direction of the pole group (1) and the housing body (21).

2. The electrical core of claim 1, wherein the positioning device (3) comprises: the circumferential gasket (31), the circumferential gasket (31) is suitable for the cover to establish on utmost point group (1) and with the inner wall laminating of casing body (21).

3. The electrical core according to claim 2, characterized in that an inner wall of the circumferential gasket (31) facing the pole group (1) and/or an outer wall facing the housing body (21) is provided with an insulating film.

4. The electrical core of claim 2, wherein the positioning device (3) further comprises: a bottom gasket (32), the bottom gasket (32) being located between the bottom of the pole group (1) and the housing body (21), and the bottom gasket (32) being provided with a bottom pallet seating opening (33), the bottom pallet (22) being adapted to be placed in the bottom pallet seating opening (33).

5. The electrical core according to claim 4, wherein the circumferential gasket (31) is fixedly connected to the bottom gasket (32).

6. The electrical core of claim 4, wherein the circumferential gasket (31) is integrally formed with the bottom gasket (32).

7. The electrical core according to any of claims 1 to 6, characterized in that the positioning device (3) is formed as a soft insulator.

8. The cell of any of claims 1 to 6, wherein the casing assembly (2) further comprises: the battery cell cover plate (23), the opening of the shell body (21) is located above the shell body (21), the battery cell cover plate (23) is suitable for sealing the opening of the shell body (21), and the pole group (1) is electrically connected with the battery cell cover plate (23).

9. A battery pack, characterized in that it comprises a battery cell (10) according to any of claims 1 to 8.

10. A vehicle characterized by comprising the battery pack according to claim 9.