CN210576182U

CN210576182U - Battery module

Info

Publication number: CN210576182U
Application number: CN201921455781.8U
Authority: CN
Inventors: 谷建行; 汪高峰; 钟宽; 李影; 邹十美
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-19
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a battery module, include: the battery comprises at least two batteries and clamping pieces, wherein each battery comprises a battery tab; the clamping piece is provided with a clamping part, and one clamping part is used for clamping at least two battery tabs to enable at least two batteries to be connected in series or in parallel with the battery module. The battery in the battery module is connected in series and in parallel by clamping battery lugs through the clamping part; when single battery was dismantled to needs, only need loosen the clamping part take out the battery can, compare traditional battery module and adopt bolt or welded mode to realize the series-parallel connection between battery and the battery, the integrated configuration of this application, the dismouting is convenient, and follow-up can dismantle single battery and carry out echelon recycle.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module.

Background

Lithium ion batteries are widely used because of their advantages of high energy density, long service life, no memory effect, and no toxic and harmful substances such as lead. In recent years, soft package batteries are becoming more and more popular with companies because of their remarkable advantages in various performances such as safety, energy density, cycle life, and the like.

In order to meet the requirements of capacity and voltage, the lithium ion battery generally needs to be combined into a lithium battery module for use, and the traditional lithium battery module combination mode is difficult to realize the replacement and maintenance of a single battery, and is particularly not favorable for the echelon reutilization of the battery.

SUMMERY OF THE UTILITY MODEL

Based on this, be difficult to realize the single section to traditional lithium battery module compound mode and change the maintenance, especially be unfavorable for the problem that echelon was recycled, provided a battery module, this battery module realizes the series-parallel connection through the mode of clamping part centre gripping battery utmost point ear, is convenient for the dismouting of single battery and carries out subsequent echelon and recycle after carrying out the dismouting to single battery.

The specific technical scheme is as follows:

the application relates to a battery module, include: at least two batteries including battery tabs; and the clamping piece is provided with a clamping part, and one clamping part is used for clamping at least two battery tabs so that at least two batteries are connected in series or in parallel.

In the battery module, the battery and the battery clamp the battery tabs through the clamping part to realize series and parallel connection; when single battery was dismantled to needs, only need loosen the clamping part take out the battery can, compare traditional battery module and adopt bolt or welded mode to realize the series-parallel connection between battery and the battery, the integrated configuration of this application, the dismouting is convenient, and follow-up can dismantle single battery and carry out echelon recycle.

The technical solution is further explained below:

in one embodiment, the battery module further comprises a heat-sensitive coating, and the heat-sensitive coating is coated or wrapped on the side wall of the clamping part.

In one embodiment, the clamping part comprises a clamping wall for clamping the battery tab, and the clamping wall is provided with an anti-slip structure.

In one embodiment, the anti-slip structure is serrated.

In one embodiment, the anti-slip structure is an anti-slip layer, and the anti-slip layer is coated or wrapped on the clamping wall.

In one embodiment, the heat sensitive coating is coated or clad on the retaining wall.

In one embodiment, the clamping member comprises a first clamping body and a second clamping body, and the first clamping body and the second clamping body can rotate relatively to form the clamping part.

In one embodiment, the battery module further comprises a connecting piece, the number of the batteries is multiple, the number of the clamping pieces is at least two, the clamping pieces are used for clamping at least two corresponding battery tabs in at least two batteries, and the connecting piece is used for fixing at least two clamping pieces.

In one embodiment, the battery module further comprises an installation shell, wherein the installation shell is provided with an accommodating cavity, and the clamping piece and/or the battery tab are arranged in the accommodating cavity.

In one embodiment, the clamping member is further provided with a hand-held portion, and the hand-held portion is connected with the clamping portion.

Drawings

FIG. 1 is a schematic view of a clamp;

FIG. 2 is a schematic view of the mounting of the clamp and the battery;

FIG. 3 is an enlarged view of part A of FIG. 2;

fig. 4 is a schematic structural view of the battery module.

Description of reference numerals:

10. a battery module; 100. a battery; 102. a battery tab; 200. a clamping member; 210. a clamping portion; 212. a first clamping body; 214. a second clamping body; 216. an anti-slip structure; 220. a hand-held portion; 230. a rotating shaft; 300. a connecting member; 400. installing a shell; 410. a receiving cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be integral with the other element or can be removably connected to the other element.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Further, it is to be understood that, in the present embodiment, the positional relationships indicated by the terms "lower", "upper", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "one side", "the other side", "one end", "the other end", and the like are based on the positional relationships shown in the drawings; the terms "first," "second," and the like are used herein to distinguish one structural element from another. These terms are merely for convenience of description and simplicity of description, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 4, an embodiment of a battery module 10 includes: at least two batteries 100 and a clamping member 200, the batteries 100 including battery tabs 102; the clamping member 200 is provided with clamping portions 210, and one clamping portion 210 is used to clamp at least two battery tabs 102 so that at least two batteries 100 are connected in series or in parallel.

In the battery module 10, the battery tabs 102 are clamped between the

batteries

100 and 100 by the clamping parts 210 to realize series connection and parallel connection; when single battery 100 need be dismantled, only need loosen clamping part 210 and take out battery 100 can, compare traditional battery module and adopt bolt or welded mode to realize the series-parallel connection between battery and the battery, the compound mode of this application, the dismouting is convenient, and follow-up can dismantle single battery 100 and carry out echelon and recycle. Specifically, the battery tabs 102 include a positive tab and a negative tab, and when two batteries 100 need to be connected in series, only the positive tab of one battery 100 and the negative tab of one battery 100 need to be clamped by the clamping portion 210; when two batteries 100 need to be connected in parallel, only the positive tab of one battery 100 and the positive tab of one battery 100 need to be clamped by the clamping portion 210. In order to improve the reliability of the electrical conduction between the battery tabs 102, the clamping member 200 is made of an electrically conductive material, preferably a metal member.

The traditional battery module realizes series connection or parallel connection between batteries through a bolt or welding mode, however, a bolt or welding combined mode has many problems, on one hand, the bolt or welding process is relatively complex, on the other hand, the bolt or welding combined mode has small conductive contact area, and when the bolt is connected in subsequent use, particularly in shaking, the problem of looseness between the batteries easily occurs, so that a single-point failure risk exists, and in the application, the clamping mode of the clamping part 210 is adopted, on the one hand, the conductive area between the clamping part 210 and the battery tab 102 is large, and on the other hand, the single-point failure risk or the single-point failure risk is not low. Meanwhile, in the application, the battery tab 102 is clamped by the single clamping piece 200, so that the installation and the disassembly are convenient, and the single clamping part 210 arranged on the single clamping piece 200 is flexible in use.

As shown in fig. 1, on the basis of the above-mentioned embodiment, in order to improve the stability of the clamping part 210 clamping the battery tab 102, the clamping part 210 includes a clamping wall for clamping the battery tab 102, and the clamping wall is provided with an anti-slip structure 216.

As shown in fig. 1, of course, the anti-slip structure 216 has various forms, in this embodiment, the anti-slip structure 216 is serrated, so that the frictional force between the battery tab 102 and the clamping portion 210 is increased by the serrated anti-slip structure 216, and the stability of the clamping portion 210 clamping the battery tab 102 is further improved. Further, by providing the anti-slip structure 216 in a zigzag shape, since the zigzag structure has a tip structure, the stability of the clamping portion 210 for clamping the battery tab 102 can be improved when clamping the battery tab 102.

Of course, in other embodiments, the anti-slip structure 216 is an anti-slip layer coated or wrapped on the clamping wall, so that the friction between the battery tab 102 and the clamping portion 210 is increased by the anti-slip layer, and the stability of the clamping portion 210 clamping the battery tab 102 is further improved. In particular, the anti-slip layer may be a rubber layer or an anti-slip coating.

On the basis of any of the above embodiments, the battery module 10 further includes a thermal sensitive coating, which is coated or wrapped on the sidewall of the clamping portion 210, at this time, when the battery 100 is short-circuited and the current is too large, the internal resistance of the clamping member 200 will increase along with the temperature rise, so as to avoid explosion caused by thermal runaway of the battery module 10, and improve the safety performance of the battery module 10; specifically, the thermosensitive coating can be a composite material prepared by taking an organic polymer as a matrix and doping conductive fillers and the like. Wherein the organic polymer can be one or a mixture of polyethylene, epoxy resin, polyvinyl chloride or polypropylene alcohol; the conductive filler is one or a mixture of carbon black, graphite, metal powder or metal oxide. Preferably, the thermosensitive coating is coated or wrapped on the clamping wall, and since the clamping wall is directly contacted with the battery tab 102, the reliability of response of the thermosensitive coating can be improved by coating or wrapping the thermosensitive coating on the clamping wall, in this embodiment, the thermosensitive coating is coated or wrapped on the side wall of the serrated anti-slip structure 216, and at this time, compared with the conventional thermosensitive coating disposed inside the battery, the thermosensitive coating in this embodiment is convenient to coat, is simple to operate, and does not affect the capacity of the battery 100.

As shown in fig. 1 and fig. 2, specifically, there are various ways to clamp the battery tab 102, in this embodiment, the clamping member 200 includes a first clamping body 212 and a second clamping body 214, and the first clamping body 212 and the second clamping body 214 can rotate relatively to form the clamping portion 210, so that, when clamping the battery tab 102, only the first clamping body 212 and the second clamping body 214 need to rotate relatively, and at this time, a clamping space, i.e., the clamping portion 210, is formed between the first clamping body 212 and the second clamping body 214; meanwhile, the relative rotation of the first clamping body 212 and the second clamping body 214 can also increase or decrease the size of the clamping space, so that the battery tab clamping device can be adapted to battery tabs 102 with different sizes, and can clamp different numbers of battery tabs 102; in this embodiment, the first clamping body 212 and the second clamping body 214 are both connected to the rotating shaft 230 and are rotated and clamped by a clamp spring, similar to a clamp structure.

Of course, in another embodiment, the clamping member 200 includes a first clamping body 212 and a second clamping body 214, and the first clamping body 212 and the second clamping body 214 can move relatively to form the clamping portion 210, in which case, when clamping the battery tab 102, only the first clamping body 212 and the second clamping body 214 need to move relatively to form a clamping space between the first clamping body 212 and the second clamping body 214, i.e., the clamping portion 210. Meanwhile, the relative movement of the first clamping body 212 and the second clamping body 214 can also increase or decrease the size of the clamping space, so that the battery tab clamping device can be adapted to battery tabs 102 with different sizes, and can clamp different numbers of battery tabs 102; the first clamping body 212 and the second clamping body 214 can move relatively in various ways, for example, mounting holes are formed in the first clamping body 212 and the second clamping body 214, a stud penetrates through the mounting holes, and then the stud is fixed through the threaded fit of a nut matched with the stud and the stud, and the size of a clamping space formed between the first clamping body 212 and the second clamping body 214 can be changed.

As shown in fig. 4, on the basis of any of the above embodiments, the battery module 10 further includes a connecting member 300, the number of the batteries 100 is plural, the number of the clamping members 200 is at least two, the clamping members 200 are used for clamping at least two corresponding battery tabs 102 of at least two batteries 100, and the connecting member 300 is used for fixing at least two clamping members 200, so that the clamping members 200 are further fixed by the connecting member 300, and the clamping members 200 are not easily loosened.

As shown in fig. 4, on the basis of any of the above embodiments, the battery module 10 further includes an installation housing 400, the installation housing 400 is provided with an accommodating cavity 410, and the clamping member 200 and/or the battery tab 102 are disposed in the accommodating cavity 410, at this time, the installation housing 400 can protect the clamping member 200 and/or the battery tab 102, so as to prevent the clamping member 200 and/or the battery tab 102 from being damaged.

As shown in fig. 1, on the basis of any of the above embodiments, the clamping member 200 is further provided with a handheld portion 220, and the handheld portion 220 is connected with the clamping portion 210, so that the clamping member 200 can be more conveniently grabbed by holding the handheld portion 220.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A battery module, comprising:

at least two batteries including battery tabs; and

the clamping piece, the clamping piece is equipped with clamping part, one clamping part is used for the centre gripping at least two the battery utmost point ear makes at least two the battery is established ties or parallel connection.

2. The battery module according to claim 1, further comprising a heat-sensitive coating applied to or covering the side wall of the clamping part.

3. The battery module according to claim 2, wherein the clamping portion includes a clamping wall for clamping the battery tab, the clamping wall being provided with an anti-slip structure.

4. The battery module according to claim 3, wherein the anti-slip structure is serrated.

5. The battery module according to claim 3, wherein the anti-slip structure is an anti-slip layer coated or wrapped on the clamping wall.

6. The battery module according to claim 3, wherein the heat-sensitive coating is coated or wrapped on the clamping wall.

7. The battery module according to claim 1, wherein the clamping member comprises a first clamping body and a second clamping body, and the first clamping body and the second clamping body are relatively rotatable to form the clamping portion.

8. The battery module as set forth in claim 1, further comprising a connecting member, wherein the number of the batteries is plural, the number of the clamping members is at least two, the clamping members are used for clamping at least two battery tabs corresponding to at least two of the batteries, and the connecting member is used for fixing at least two of the clamping members.

9. The battery module according to claim 1, further comprising a mounting housing, wherein the mounting housing defines an accommodating cavity, and the clamping member and/or the battery tab are disposed in the accommodating cavity.

10. The battery module according to any one of claims 1 to 9, wherein the clamping member is further provided with a hand-held portion, and the hand-held portion is connected with the clamping portion.