CN213601969U

CN213601969U - Battery module

Info

Publication number: CN213601969U
Application number: CN202022345616.6U
Authority: CN
Inventors: 邢程; 党奎; 周兴
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-07-02
Anticipated expiration: 2030-10-20

Abstract

The utility model provides a battery module, includes electric core group, bolster and fixed band, and electric core group includes a plurality of electric cores, and each electric core is by folding in order to form electric core group, and the bolster sets up on electric core group's tip, and the fixed band is connected with bolster and electric core group respectively, and the fixed band is used for fixing electric core group to make the bolster top hold electric core group. Utilize bolster and fixed band mating reaction for need not use the buffering material also can eliminate the clearance between each electric core in the electric core group, thereby reduce the material and drop into and practice thrift the cost, electric core inflation back in addition, bolster and fixed band can carry out position adjustment voluntarily, thereby can be reliably when electric core group is fixed as whole, prevent that electric core from being crowded to explode and the weeping.

Description

Battery module

Technical Field

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

Background

The battery module is formed by connecting a plurality of battery monomers in series or in parallel. A plurality of battery cells are connected to form a battery module, and thus, the battery module has sufficient load capacity to drive a larger load.

However, because battery module comprises a plurality of battery monomer, in actual production, can have certain clearance between every two adjacent battery monomer, in order to eliminate the clearance between the battery monomer, also avoid two adjacent battery monomer to bump simultaneously, often need use the rubber pad to place between per two battery monomer, so will lead to containing too much rubber pad in the battery module, so not only can lead to battery module increase cost, still can lead to battery module's volume too huge, and because battery monomer can irreversibly appear the inflation after recycling certain number of times, so, can lead to the rubber pad to crush battery monomer and the risk of weeping appears.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a battery module, can save buffering materials such as rubber pad in order to practice thrift the cost, simplify the structure in, can also ensure that battery module possesses sufficient deformability to can prevent to crush battery monomer.

The purpose of the utility model is realized through the following technical scheme:

a battery module, comprising:

the battery core group comprises a plurality of battery cells, and the battery cells are sequentially stacked to form the battery core group;

the buffer part is arranged on the end part of the electric core group; and

the fixing band, the fixing band respectively with the bolster reaches the electric core group is connected, the fixing band is used for right the electric core group is fixed, so that the bolster top is held the electric core group.

In one embodiment, the number of the buffer members is two, the two buffer members are respectively arranged at two ends of the electric core group, and the fixing band is respectively connected with the two buffer members.

In one embodiment, the buffer member comprises a fixed end plate, a spring and a buffering end plate, the buffering end plate abuts against the end of the cell group, two ends of the spring are respectively connected with the buffering end plate and the fixed end plate, the spring is used for pushing the buffering end plate away from the fixed end plate, and the fixing band is connected with the fixed end plate.

In one embodiment, the number of the fixing belts is two, and the two fixing belts are respectively positioned on two sides of the electric core group.

In one embodiment, the battery module further comprises an insulation sheet, and two side surfaces of the insulation sheet are respectively abutted to the electric core group and the buffer end plate.

In one embodiment, the fixing band is adhered to the electric core group.

In one embodiment, the fixing band is a cloth-based adhesive tape.

In one embodiment, the side walls of the electric cores are provided with a position-avoiding groove, and when every two adjacent electric cores are tightly attached to each other, the position-avoiding groove is in a sealed state.

In one embodiment, the cell pack further comprises a plurality of aluminum rows, and each aluminum row is used for connecting the cells in sequence.

In one embodiment, the battery module further comprises foam and a polycarbonate film, wherein the foam is attached to the battery core assembly, and the polycarbonate film is attached to the foam.

Compared with the prior art, the utility model discloses at least, following advantage has:

the utility model discloses a battery module, including electric core group, bolster and fixed band, electric core group includes a plurality of electric cores, and each electric core order is by folding in order to form electric core group, and the bolster sets up on electric core group's tip, and the fixed band is connected with bolster and electric core group respectively, and the fixed band is used for fixing electric core group to make the bolster top hold electric core group. Utilize bolster and fixed band mating reaction for need not use the buffering material also can eliminate the clearance between each electric core in the electric core group, thereby reduce the material and drop into and practice thrift the cost, electric core inflation back in addition, bolster and fixed band can carry out position adjustment voluntarily, thereby can be reliably when electric core group is fixed as whole, prevent that electric core from being crowded to explode and the weeping.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a buffer according to an embodiment of the present invention;

fig. 3 is a partial structural view of the battery module shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that 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.

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.

It is noted that as used herein, reference to an element being "connected" to another element also means that the element is "in communication" with the other element, and fluid can be in exchange communication between the two.

Referring to fig. 1, a battery module 10 includes a battery cell assembly 100, a buffer member 200 and a fixing band 300, wherein the battery cell assembly 100 includes a plurality of battery cells 110, each of the battery cells 110 is sequentially stacked to form the battery cell assembly 100, the buffer member 200 is disposed on an end portion of the battery cell assembly 100, the fixing band 300 is respectively connected to the buffer member 200 and the battery cell assembly 100, and the fixing band 300 is used for fixing the battery cell assembly 100, so that the buffer member 200 supports the battery cell assembly 100.

It should be noted that the fixing band 300 can fix the electric core assembly 100 and the buffer member 200 into a whole, wherein the electric core assembly 100 is formed by mutually and closely abutting a plurality of electric cores 110, it should be noted that, compared to the conventional method that a rubber pad is required to be placed between every two electric cores 110, in the present application, each electric core 110 is directly abutted together, so as to form the battery module 10 with the same volume, and the present application does not need a rubber pad, so that the battery module 10 with the same volume can be larger than the conventional battery module with more accommodated electric cores 110, that is, the battery module 10 with the same volume can reach a larger capacity; further, the buffering member 200 is installed on the end of the electric core assembly 100, and then the fixing band 300 fixedly connects the buffering member 200 with the electric core assembly 100, so as to form the battery module 10, it should be noted that the electric core assembly 100 is formed by stacking a plurality of electric cores 110, and the electric cores 110 can irreversibly expand after being recycled for a certain number of times, so that the electric core assembly 100 can reach a large deformation degree due to the stack of the expansion volumes of the electric cores 110, and since the buffering member 200 is installed on the end of the electric core assembly 100, the electric core assembly 100 can press the buffering member 200, compared with the conventional structure, since the buffering member 200 has an elastic buffering function, in an embodiment, the buffering member 200 is a buffering elastic sheet, and thus, the buffering member 200 can automatically adjust the clamping acting force of the electric core assembly 100, so that the buffering member 200 can be displaced according to the expansion ejection of the electric core assembly 100, to maintain the fixing effect on the electric core assembly 100, further, the electric core assembly 100 is connected to the buffer assembly 200 by the fixing band 300, it should be noted that the fixing band 300 is a winding band with elastic acting force, in one embodiment, the fixing band 300 may be a cloth-based adhesive tape, which is a high adhesive tape with high adhesive force and is made of polyethylene, coated with high-viscosity synthetic glue, having strong peeling force, tensile resistance, grease resistance, aging resistance, temperature resistance, water resistance, and corrosion resistance, and is a high adhesive tape with relatively large adhesive force, so that the electric core assembly 100 and the buffer assembly 200 are connected by the fixing band 300, when the electric core assembly 100 expands, the electric core assembly 100 and the buffer assembly 200 are constantly fixed together under the action of the fixing band 300, and the buffer assembly 200 and the fixing band 300 can be positionally adjusted relative to the expansion of the electric core assembly 100, thereby preventing the electric core 110 in the electric core assembly 100 from being extruded due to the expansion, and even the risk of liquid leakage by crushing; and, place the rubber pad interval between two adjacent electric cores 110 for in traditional module structure, thereby when utilizing the rubber pad to eliminate the clearance between electric core 110, then utilize the elastic action of rubber pad to eliminate the extrusion that follow-up electric core 110 inflation received, this application utilizes bolster 200 and fixed band 300 installed on the tip of electric core group 100 to adjust the inflation that electric core group 100 appears jointly, can save buffer material such as rubber pad, thereby can practice thrift material cost, moreover, can prevent to appear being extruded and the problem of weeping behind electric core 110 inflation.

In one embodiment, the fixing band 300 has elasticity, so that the electric core assembly 100 and the buffer member 200 can be better fixed by the fixing band 300.

Referring to fig. 1 again, in one embodiment, two buffering members 200 are provided, the two buffering members 200 are respectively disposed on two ends of the electric core assembly 100, and the fixing belt 300 is respectively connected to the two buffering members 200.

It should be noted that the buffering member 200 is installed at the end of the electric core assembly 100, in one embodiment, the fixing band 300 is wound around three sides of the electric core assembly 100, and then two ends of the fixing band 300 are respectively connected to the buffering member 200; further, in order to improve the expansion adjustment capability of the electric core assembly 100, two buffering members 200 are respectively disposed at two ends of the electric core assembly 100, so that the pressing force to the electric core assembly 100 can be adjusted by the buffering members 200 at the two ends together as the electric core assembly 100 expands to the two ends; in one embodiment, two fixing bands 300 are provided, two fixing bands 300 are respectively located on two sides of the electric core assembly 100, two ends of any one fixing band 300 are respectively connected with two buffering members 200, and two fixing bands 300 are located on two sides of the electric core assembly 100, so that the electric core assembly 100 and the two buffering members 200 are fixed together, the firmness of the electric core assembly 100 can be improved, and the problem of liquid leakage caused by extrusion when the electric core assembly 100 is expanded is further avoided.

Referring to fig. 2, in one embodiment, the buffering member 200 includes a fixed end plate 210, a spring 220 and a buffering end plate 230, the buffering end plate 230 abuts on an end of the electric core assembly 100, two ends of the spring 220 are respectively connected to the buffering end plate 230 and the fixed end plate 210, the spring 220 is used for pushing the buffering end plate 230 away from the fixed end plate 210, and the fixing band 300 is connected to the fixed end plate 210.

It should be noted that, the fixed end plate 210 is connected to the fixing band 300, so that the fixed end plate 210 and the fixing band 300 can form an area for accommodating the electric core pack 100 together, then the buffering end plate 230 abuts against the end of the electric core pack 100, and then both ends of the spring 220 abut against the fixed end plate 210 and the buffering end plate 230 respectively, so that the buffering end plate 230 is pushed by the spring 220 to be away from the fixed end plate 210, that is, the buffering end plate 230 is pushed by the spring 220 to press and fix the electric core pack 100, when the electric core 110 in the electric core pack 100 expands, the electric core pack 100 will push the buffering end plate 230, so that the spring 220 is pushed and compressed by the buffering end plate 230, so that, before and after the electric core pack 100 expands, the buffering end plate 230 can keep clamping and fixing the electric core pack 100 by the elastic force of the spring 220, thereby automatically adjusting the expansion of the electric core pack 100, the phenomenon that the battery cell assembly 100 is squeezed to leak liquid due to expansion can be avoided, and the effect of the fixing band 300 is combined, so that the use of rubber pads to separate the battery cells 110 can be omitted, specifically, in the conventional module structure, because gaps can occur between the battery cells 110, and after the battery cells 110 are recycled for a certain number of times, the battery cells 110 can expand, so that the rubber pads can be used to eliminate the gaps between the battery cells 110, and simultaneously, the elastic force of the rubber pads can be used to offset the volume increase when the battery cells 110 expand, however, the use of the rubber pads can cause the accumulation of the rubber pads on the expanded battery cells 110, and even easily cause the battery cells 110 to be squeezed to explode to leak liquid, in the application, the elastic force of the fixing band 300 is used to ensure that the battery cells 110 are tightly attached when being stacked, so that the use of the rubber pads can be omitted, and after the battery cells 110, so that the buffer end plate 230 can adjust the expansion of the battery cell 110, thereby preventing the battery cell 110 from being extruded and exploded to cause leakage.

Referring to fig. 3, in one embodiment, the battery module 10 further includes an insulation sheet 400, and two side surfaces of the insulation sheet 400 are respectively abutted against the electric core pack 100 and the buffer end plate 230.

It should be noted that, in order to improve the structural strength of the buffer 200, in an embodiment, the buffer 200 is made of aluminum alloy, that is, the fixed end plate 210, the spring 220 and the buffering end plate 230 are made of aluminum alloy, and the battery cell 110 is also generally made of aluminum shell, so that by disposing the insulating sheet 400 between the buffering end plate 230 and the battery cell pack 100, the leakage between the battery cell pack 100 and the buffer 200 can be prevented, and thus the safety can be improved, in an embodiment, the insulating sheet 400 is a plastic sheet; in one embodiment, two insulation sheets 400 are provided, and the two insulation sheets 400 are respectively provided at both ends of the electric core pack 100, so that the safety of the battery module 10 can be improved.

In one embodiment, the fixing band 300 is adhered to the electric core assembly 100. It should be noted that, in order to improve the firmness between the fixing band 300 and the electric core assembly 100, the fixing band 300 can be adhered to the surface of the electric core assembly 100, for example, an adhesive can be used for adhesion between the fixing band 300 and the electric core assembly 100.

Referring to fig. 3 again, in an embodiment, the sidewall of the battery cells 110 is provided with an avoiding groove 111, and when every two adjacent battery cells 110 are tightly attached to each other, the avoiding groove 111 is in a sealed state. It should be noted that, set up on the lateral wall of electric core 110 and keep away a groove 111, so, when electric core 110 leaned on together, keep away a groove 111 and will be sealed up, so, can pour into the colloid in keeping away a groove 111, on the one hand, this colloid can increase the connectivity of individual electric core 110, thereby accelerate battery module 10's packaging efficiency, on the other hand, replace buffer material such as traditional rubber pad or silica gel pad through the colloid, and therefore, the production cost is reduced, because the colloid is the holding in keeping away a groove 111, consequently, battery module 10's volume can not additionally be increased.

Referring again to fig. 1, in one embodiment, the battery pack 100 further includes a plurality of aluminum rows 120, and each aluminum row 120 is used for connecting each battery cell 110 in sequence. It should be noted that any two adjacent battery cells 110 are connected by using one aluminum row 120, so that a plurality of battery cells 110 can be connected in series or in parallel.

Referring to fig. 1 again, in one embodiment, the battery module 10 further includes foam 500 and a polycarbonate film 600, the foam 500 is attached to the battery cell assembly 100, and the polycarbonate film 600 is attached to the foam 500.

It should be noted that, covering a layer of foam 500 on the electric core assembly 100 can protect the electric core assembly 100 from shock, so as to prevent the electric core assembly 100 from being damaged due to shock during use, further, covering the foam 500 with a polycarbonate film 600, the polycarbonate film 600 has excellent tensile resistance and bending resistance, and the arrangement of the polycarbonate film 600 can further improve the shock resistance of the battery module 10, thereby improving the safety.

Referring to fig. 1 again, in one embodiment, a plurality of placeholder protrusions 610 are disposed on the polycarbonate film 600, and a space is disposed between the placeholder protrusions 610. It should be noted that, cover polycarbonate film 600 back on bubble cotton 500, every two adjacent occupy-place will expose the utmost point ear of two adjacent electric cores 110 between the protruding 610, so, through setting up occupy-place protruding 610, can make aluminium row 120 can accurately install on being located the utmost point ear of two adjacent electric cores 110 between the protruding 610 that occupy-place, thereby can avoid the aluminium row mistake installation, when improving battery module 10's security, can also improve battery module 10's packaging efficiency, do not need the workman to confirm repeatedly whether the aluminium row installation misplaces.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is 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:

the buffer part is arranged on the end part of the electric core group; and

2. The battery module according to claim 1, wherein there are two buffering members, two buffering members are respectively disposed at both ends of the cell group, and the fixing band is respectively connected to the two buffering members.

3. The battery module according to claim 2, wherein the buffering member comprises a fixed end plate, a spring and a buffering end plate, the buffering end plate abuts against the end of the cell group, two ends of the spring are respectively connected with the buffering end plate and the fixed end plate, the spring is used for pushing the buffering end plate away from the fixed end plate, and the fixing band is connected with the fixed end plate.

4. The battery module according to claim 3, wherein the fixing bands are provided in two numbers, and the two fixing bands are respectively located on both sides of the electric core pack.

5. The battery module according to claim 3, further comprising an insulating sheet, wherein two side surfaces of the insulating sheet abut against the cell pack and the buffer end plate, respectively.

6. The battery module according to claim 1, wherein the fixing band is adhered to the electric core pack.

7. The battery module according to claim 1, wherein the fixing tape is a cloth-based adhesive tape.

8. The battery module according to claim 1, wherein the side walls of the electric cores are provided with a position-avoiding groove, and when every two adjacent electric cores are tightly attached to each other, the position-avoiding groove is in a sealed state.

9. The battery module of claim 1, wherein the cell pack further comprises a plurality of aluminum rows, each aluminum row being configured to sequentially connect the cells.

10. The battery module according to claim 1, further comprising foam and a polycarbonate film, wherein the foam is attached to the cell group, and the polycarbonate film is attached to the foam.