CN216288697U

CN216288697U - Battery pack

Info

Publication number: CN216288697U
Application number: CN202122629083.9U
Authority: CN
Inventors: 夏天军; 左帆帆; 姬嘉帅
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-12
Anticipated expiration: 2031-10-29
Also published as: WO2023071066A1; DE212022000094U1

Abstract

The present invention provides a battery pack including: a housing; the battery cell body is arranged in the shell; the insulating body is sleeved on the cell body and is positioned between the cell body and the inner wall surface of the shell; be provided with the supporting part on the insulator, the supporting part is extended towards the direction that is close to electric core body by insulator on, until laminating with electric core body to support electric core body through the supporting part. The utility model solves the problem of higher manufacturing cost of the battery in the prior art.

Description

Battery pack

Technical Field

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

Background

With the increasing maturity of lithium ion battery technology, lithium ion batteries are widely used in the field of electric vehicles as power batteries.

In the current battery, the insulating piece all is present in the casing simultaneously with the bottom plate board, and the insulating piece wraps up electric core, and later insulating piece top edge and power battery top cap plastic part carry out the hot melt and fix to reach the effect that the parcel rolled up core and insulation, because metal casing has the fillet, need the bottom plate to support electric core, in order to avoid electric core bottom to interfere with the arc angle of shell and cause the damage or the short circuit of electric core.

However, in the prior art, the battery core needs to be supported by two parts, namely the insulating sheet and the bottom support plate, so that the cost of the battery core is increased, and meanwhile, the insulating sheet and the bottom support plate need to be fixed in a hot melting manner, so that the assembly procedure of the battery is increased, and the production cost of the battery is increased.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a battery assembly to solve the problem of high manufacturing cost of batteries in the prior art.

In order to achieve the above object, the present invention provides a battery pack including: a housing; the battery cell body is arranged in the shell; the insulating body is sleeved on the cell body and is positioned between the cell body and the inner wall surface of the shell; be provided with the supporting part on the insulator, the supporting part is extended towards the direction that is close to electric core body by insulator on, until laminating with electric core body to support electric core body through the supporting part.

Furthermore, the supporting part comprises a supporting layer body, and the supporting layer body is a single layer or multiple layers; the multiple layers of support layer bodies are sequentially laminated, and the two adjacent layers of support layer bodies are mutually connected.

Further, the insulator body includes: the bottom plate is opposite to the bottom end of the battery cell body, and the supporting part is arranged on the bottom plate; the supporting parts are two, and the two supporting parts are opposite and arranged at intervals.

Further, the bottom plate can be arranged in a foldable mode, a crease mark is arranged on the bottom plate, the extending direction of the crease mark is consistent with the extending direction of the bottom plate, the bottom plate can be folded along the crease mark, and the supporting portion is formed on the bottom plate.

Further, the insulator body still includes: the first end of the bottom plate is connected with the first side plate; the second end of the bottom plate is connected with the second side plate; the first side plate and the second side plate are connected with each other to form an accommodating space for accommodating the battery cell body among the first side plate, the bottom plate and the second side plate.

Furthermore, the first side plate is attached to the first side surface of the battery cell body, a second side surface connected with the first side surface is further arranged on the battery cell body, and a first included angle is formed between the first side surface and the second side surface; be provided with first connecting portion on the first curb plate, first connecting portion can turn over the setting of rolling over for first curb plate, and first connecting portion laminates with the second side of electric core body.

Further, the first connecting portion includes a first connecting piece, and the first connecting piece and the first side plate are integrally formed.

Furthermore, the second side plate is attached to a third side surface of the cell body, a fourth side surface connected with the third side surface is further arranged on the cell body, and a second included angle is formed between the third side surface and the fourth side surface; the second connecting portion are arranged on the second side plate, the second connecting portion can be folded relative to the second side plate, and the second connecting portion is attached to the fourth side face.

Further, the second connecting portion includes a second connecting piece integrally formed with the second side plate.

Further, the battery assembly further includes: and the top cover is arranged on the shell and is attached to the battery cell body, and the top cover is connected with the shell.

By applying the technical scheme of the utility model, the battery component comprises a shell, a battery cell body and an insulating body, wherein the battery cell body is arranged in the shell, the insulating body is sleeved on the battery cell body, and the insulating body is positioned between the battery cell body and the inner wall surface of the shell; be provided with the supporting part on the insulator, the supporting part is extended towards the direction that is close to electric core body by insulator on, until laminating with electric core body to support electric core body through the supporting part. Supporting part through on the insulator supports electric core body like this, avoids electric core body and the corner in the casing to take place to interfere, has played the guard action to electric core body, has left out the collet plate structure among the prior art simultaneously, makes battery pack's structure simpler, has reduced the manufacturing cost of battery.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is an exploded view showing the structure of an embodiment of a battery pack according to the present invention;

fig. 2 is a schematic view showing the structure of a support part of a battery pack according to the present invention; and

fig. 3 is an exploded view showing the insulative housing of the battery pack according to the present invention.

Wherein the figures include the following reference numerals:

1. a housing; 2. a cell body; 3. an insulating body; 30. a support portion; 301. a support layer body; 31. a base plate; 310. marking a crease; 32. a first side plate; 33. a second side plate; 320. a first connection portion; 330. a second connecting portion; 4. and a top cover.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 3, the present invention provides a battery assembly, including: a housing 1; the battery cell body 2 is arranged in the shell 1; the insulating body 3 is sleeved on the cell body 2, and the insulating body 3 is positioned between the cell body 2 and the inner wall surface of the shell 1; be provided with supporting part 30 on insulator 3, supporting part 30 is extended by insulator 3 towards the direction that is close to electric core body 2, until laminating with electric core body 2 to support electric core body 2 through supporting part 30.

The battery pack provided by the utility model comprises a shell 1, a battery cell body 2 and an insulating body 3, wherein the battery cell body 2 is arranged in the shell 1, the insulating body 3 is sleeved on the battery cell body 2, and the insulating body 3 is positioned between the battery cell body 2 and the inner wall surface of the shell 1; be provided with supporting part 30 on insulator 3, supporting part 30 is extended by insulator 3 towards the direction that is close to electric core body 2, until laminating with electric core body 2 to support electric core body 2 through supporting part 30. Supporting part 30 through insulator 3 supports electric core body 2 like this, avoids electric core body 2 and the interior corner of casing 1 to take place to interfere, has played the guard action to electric core body 2, has left out the collet structure among the prior art simultaneously, makes battery pack's structure simpler, has reduced the manufacturing cost of battery.

Specifically, as shown in fig. 2, the supporting portion 30 includes a supporting layer 301, and the supporting layer 301 has a single layer or multiple layers; the plurality of layers of supporting layer bodies 301 are sequentially laminated, and the two adjacent layers of supporting layer bodies 301 are connected with each other. The number of layers of the supporting layer body 301 can be determined by self according to actual requirements, so that the thickness of the supporting part 30 is determined, the stable support of the battery cell body 2 is guaranteed, the weight of the battery pack is reduced, and the overall height of the battery pack is reduced.

In the course of implementation, the insulating body 3 comprises: a bottom plate 31, the bottom plate 31 being opposite to the bottom end of the cell body 2, the support portion 30 being disposed on the bottom plate 31; the number of the supporting portions 30 is two, and the two supporting portions 30 are arranged opposite to each other at an interval. Through two supporting parts 30, provide stable holding power to electric core body 2, the even atress of two supporting parts 30 avoids electric core body 2 to take place the condition of slope.

In the embodiment provided by the present invention, the bottom plate 31 is foldably provided, and the bottom plate 31 is provided with a crease mark 310, and the extending direction of the crease mark 310 is consistent with the extending direction of the bottom plate 31, so as to fold the bottom plate 31 along the crease mark 310 to form the supporting part 30 on the bottom plate 31. The structure is simple, the operation is convenient, the bottom plate 31 can be directly folded in the process of assembling the battery so as to increase the thickness of the bottom plate 31 and form the supporting part 30, and the adjacent two layers of supporting layer bodies 301 are fixed in a hot melting fixing mode, an adhesive tape bundling mode, a glue bonding mode and the like; or, the two adjacent layers of the support layer bodies 301 are attached to each other, and the multilayer support layer bodies 301 are fixed by using the self-gravity of the battery cell body 2.

Wherein, insulator 3 still includes: a first side plate 32, a first end of the bottom plate 31 is connected with the first side plate 32; a second side plate 33, a second end of the bottom plate 31 being connected to the second side plate 33; the first side plate 32 and the second side plate 33 are connected to each other to form a containing space for containing the cell body 2 among the first side plate 32, the bottom plate 31, and the second side plate 33. Like this at the in-process of equipment battery, can directly wrap up first curb plate 32 and second curb plate 33 on electric core body 2, perhaps, after first curb plate 32, second curb plate 33 and bottom plate 31 are accomplished in the equipment, insert accommodation space, easy operation is convenient with electric core body 2.

In specific implementation, the first side plate 32 is attached to the first side surface of the battery cell body 2, a second side surface connected to the first side surface is further arranged on the battery cell body 2, and a first included angle is formed between the first side surface and the second side surface; the first side plate 32 is provided with a first connecting portion 320, the first connecting portion 320 is foldable relative to the first side plate 32, and the first connecting portion 320 is attached to the second side surface of the cell body 2. The side surfaces of the cell body 2 are attached by the first connecting portions 320, wherein the number of the first connecting portions 320 is two, and the two first connecting portions 320 are respectively located at two ends of the first side plate 32, so that the second side surface and the fourth side surface of the cell body 2 are protected by the two first connecting portions 320.

Specifically, the first connecting portion 320 includes a first connecting piece integrally formed with the first side plate 32. Creases are formed on the first side plate 32 and the first connecting portion 320, and the first connecting portion 320 is folded along the creases, so that the first connecting portion 320 is attached to the side surface of the cell body 2.

Further, the second side plate 33 is attached to a third side surface of the cell body 2, a fourth side surface connected to the third side surface is further disposed on the cell body 2, and a second included angle is formed between the third side surface and the fourth side surface; the second side plate 33 is provided with a second connecting portion 330, the second connecting portion 330 is foldable relative to the second side plate 33, and the second connecting portion 330 is attached to the fourth side surface. Wherein, the second connecting portion 330 is two, and two second connecting portions 330 set up respectively at the both ends of second curb plate 33, and two second connecting portions 330 mutually support with two first connecting portions 320, wrap up electric core body 2, improve the insulating nature between electric core body 2 and the casing 1.

Specifically, the second connection portion 330 includes a second connection piece integrally formed with the second side plate 33. Be provided with the crease between second curb plate 33 and second connecting portion 330, conveniently turn over a second connecting portion 330 in process of production to be connected with electric core body 2.

In the specific implementation process, the insulating body 3 is sheet-shaped, the thickness is 0.05mm to 0.2mm, and the insulating body 3 is made of electrolyte-resistant plastic materials such as polypropylene or PET (polyethylene terephthalate).

The battery pack further includes: and the top cover 4 is covered on the shell 1 and is attached to the battery cell body 2, and the top cover 4 is connected with the shell 1. After the insulating body 3 wraps the cell body 2, the cell body is integrally filled into the shell 1, then the top cover 4 is covered, and the top cover 4 and the shell 1 are welded and sealed to finish the manufacture of the battery.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery assembly, comprising:

a housing (1);

the battery cell body (2) is installed in the shell (1);

the insulating body (3) is sleeved on the battery cell body (2), and the insulating body (3) is positioned between the battery cell body (2) and the inner wall surface of the shell (1);

the battery cell structure is characterized in that a supporting part (30) is arranged on the insulating body (3), the supporting part (30) extends towards the direction close to the battery cell body (2) on the insulating body (3) until being attached to the battery cell body (2) so as to support the battery cell body (2) through the supporting part (30).

2. The battery pack according to claim 1, wherein the support portion (30) comprises a support layer body (301), and the support layer body (301) has a single layer or a plurality of layers;

the multiple layers of the supporting layer bodies (301) are sequentially arranged in a laminated mode, and the two adjacent layers of the supporting layer bodies (301) are mutually connected.

3. The battery assembly according to claim 1, wherein the insulating body (3) comprises:

the bottom plate (31) is opposite to the bottom end of the battery cell body (2), and the supporting part (30) is arranged on the bottom plate (31);

the number of the supporting parts (30) is two, and the two supporting parts (30) are opposite and arranged at intervals.

4. The battery pack according to claim 3, wherein the bottom plate (31) is foldably provided, and a crease mark (310) is provided on the bottom plate (31), and an extending direction of the crease mark (310) is identical to an extending direction of the bottom plate (31) to fold the bottom plate (31) along the crease mark (310) to form the supporting portion (30) on the bottom plate (31).

5. A battery assembly according to claim 3, characterized in that the insulating body (3) further comprises:

a first side plate (32), a first end of the bottom plate (31) being connected with the first side plate (32);

a second side plate (33), a second end of the bottom plate (31) being connected to the second side plate (33);

the first side plate (32) and the second side plate (33) are connected with each other to form a containing space for containing the battery cell body (2) among the first side plate (32), the bottom plate (31) and the second side plate (33).

6. The battery assembly according to claim 5, wherein the first side plate (32) is attached to a first side surface of the cell body (2), a second side surface connected to the first side surface is further disposed on the cell body (2), and a first included angle is formed between the first side surface and the second side surface;

the battery cell comprises a battery cell body (2) and is characterized in that a first connecting portion (320) is arranged on the first side plate (32), the first connecting portion (320) is arranged opposite to the first side plate (32) in a foldable mode, and the first connecting portion (320) is attached to the second side face of the battery cell body (2).

7. The battery assembly of claim 6, wherein the first connection (320) comprises a first tab integrally formed with the first side plate (32).

8. The battery assembly according to claim 6, wherein the second side plate (33) is attached to a third side surface of the cell body (2), a fourth side surface connected to the third side surface is further disposed on the cell body (2), and a second included angle is formed between the third side surface and the fourth side surface;

the second side plate (33) is provided with a second connecting portion (330), the second connecting portion (330) is arranged in a foldable mode relative to the second side plate (33), and the second connecting portion (330) is attached to the fourth side face.

9. The battery pack of claim 8, wherein the second connection portion (330) includes a second connection tab integrally formed with the second side plate (33).

10. The battery assembly according to any one of claims 1 to 9, further comprising:

the battery cell comprises a top cover (4), wherein the top cover (4) is covered on the shell (1) and is attached to the battery cell body (2), and the top cover (4) is connected with the shell (1).