CN220984818U

CN220984818U - Battery module and battery module

Info

Publication number: CN220984818U
Application number: CN202322547019.5U
Authority: CN
Inventors: 许杰城; 吉志宽; 方俊峰; 李�杰; 赵文斌
Original assignee: Zhuhai Cosmx Power Co Ltd
Current assignee: Zhuhai Cosmx Power Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-05-17
Anticipated expiration: 2033-09-19

Abstract

The application provides a battery module and a battery module, wherein the battery module comprises: a battery cell; the bracket is provided with a supporting plate, a first side plate and a second side plate which are arranged on two opposite sides of the supporting plate, the first side plate, the second side plate and the supporting plate are enclosed together to form a containing groove, and the battery cell is arranged in the containing groove; wherein, the bracket range upon range of is provided with a plurality of, and the notch of all holding tanks is towards same direction, and one side that the layer board was kept away from to first curb plate is provided with the insulating layer, and one side that the layer board was kept away from to the second curb plate is provided with the insulating layer, and the length of insulating layer on the length direction of bracket is greater than or equal to the length of first curb plate. The brackets are stacked and provided with a plurality of slots of the accommodating grooves of the brackets face the same direction, which means that the contact of the adjacent brackets is that the supporting plate of one bracket contacts with the first side plate and the second side plate of the other bracket, which are provided with the insulating layer, and the length of the insulating layer is greater than or equal to that of the first side plate.

Description

Battery module and battery module

Technical Field

The application relates to the technical field of batteries, in particular to a battery module and a battery module.

Background

The battery is internally provided with battery modules which are arranged in a stacked manner, adjacent battery modules are in contact arrangement, and electric leakage is possible to occur to each battery module, so that short circuit between the adjacent battery modules is caused, large-area short circuit of the battery is caused, the health of the battery is affected, and the battery is prevented from being damaged when serious.

Disclosure of utility model

In view of the above, the present application provides a battery module, which solves the problem of short circuit between adjacent battery modules and improves the safety of the battery. In addition, the application also provides a battery module with the battery module.

In order to achieve the above purpose, the present application provides the following technical solutions:

A battery module, comprising:

A battery cell;

The bracket is provided with a supporting plate, a first side plate and a second side plate which are arranged on two opposite sides of the supporting plate, the first side plate, the second side plate and the supporting plate are enclosed together to form a containing groove, and the battery cell is arranged in the containing groove;

Wherein, the bracket range upon range of is provided with a plurality of, and all the notch orientation of holding tank is the same direction, one side that the first curb plate was kept away from the layer board is provided with the insulating layer, one side that the second curb plate was kept away from the layer board is provided with insulating layer _, the insulating layer is in the length of the ascending length of bracket is greater than or equal to the length of first curb plate.

Optionally, in the above battery module, at least one electric core is disposed in the accommodating groove, the electric core close to the notch of the accommodating groove has a side edge, a local section is disposed on the first side plate between the side edge and a side of the first side plate away from the supporting plate, and a double-sided coverage rate of the insulating film on the local section is a, where a is greater than or equal to 50% and less than or equal to 100%.

Optionally, in the above battery module, in a width direction of the bracket, a length of the battery cell near the notch of the accommodating groove beyond the first side plate is B, where B is 0-2 mm.

Optionally, in the above battery module, the thickness of the insulating layer is C, where C is 0.05mm or less and 0.15mm or less.

Optionally, in the above battery module, in a length direction of the bracket, a length of the insulating layer beyond the bracket is D, where D is 0-5 mm.

Optionally, in the above battery module, the insulating layer is made of PET.

Optionally, in the above battery module, the accommodating groove contains a plurality of electric cores, and foam is disposed between adjacent electric cores.

Optionally, in the above battery module, the bracket is made of aluminum.

Optionally, in the above battery module, the first side plates of the plurality of brackets that are stacked together form a first assembly wall, and the second side plates of the plurality of brackets that are stacked together form a second assembly wall, and the first assembly wall and/or the second assembly wall are parallel and spaced to form a strip-shaped mailer film, so that a filling groove is enclosed on the first assembly wall and/or the second assembly wall, and the filling groove is filled with a heat-conducting glue, and the thickness of the heat-conducting glue is not less than that of the mailer film.

A battery module comprising a housing, an electric control module, a liquid cooling module, and any one of the battery modules.

The application provides a battery module which comprises a battery cell and a bracket, wherein the battery cell is positioned in a containing groove of the bracket. Specifically, the stacked contact of bracket is provided with a plurality of, and the notch orientation of the holding tank of whole bracket is the same direction, and more detailed, the bracket has the layer board and with the perpendicular first curb plate and the second curb plate that set up of layer board, first curb plate and second curb plate set up relatively to enclose jointly with the layer board and received the holding tank of electric core, be provided with the insulating layer in one side that the layer board was kept away from to first curb plate, be provided with the insulating layer in one side that the layer board was kept away from to the second curb plate, the insulating layer is greater than or equal to first curb plate in the length of bracket on length direction, and it is to say that the length and the width of first curb plate and second curb plate are all the same. The brackets are stacked and provided with a plurality of slots of the accommodating grooves of the brackets face the same direction, which means that the contact of the adjacent brackets is that the supporting plate of one bracket contacts with the insulating layer arranged on the other bracket, and the length of the insulating layer is greater than or equal to that of the first side plate.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a battery module according to an embodiment of the present application;

fig. 2 is a schematic structural view of a battery module;

Fig. 3 is a side view of a battery module;

Fig. 4 is an enlarged view of the portion N of fig. 3;

FIG. 5 is a schematic view of the structure of the bracket;

FIG. 6 is an enlarged view of portion M of FIG. 5;

Fig. 7 is a schematic structural view of a battery module in a stacked arrangement.

In fig. 1-7:

1. A battery cell; 2. a bracket; 3. a supporting plate; 4. a first side plate; 5. a second side plate; 6. an insulating layer; 7. edge sealing of the side of the battery cell; 8. soaking cotton; 9. a limit groove; 10. a first assembly wall; 11. a bottom plate; 12. a Mylar film; 13. a local segment.

Detailed Description

The application provides a battery module, which solves the problem of short circuit between adjacent battery modules and improves the safety of batteries. In addition, the application also provides a battery module with the battery module.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1-7, the embodiment of the application provides a battery module, which comprises a battery cell 1 and a bracket 2, wherein the battery cell 1 is positioned in a containing groove of the bracket 2, the containing groove is formed by enclosing a supporting plate 3, a first side plate 4 and a second side plate 5 on the bracket 2 together, the first side plate 4 and the second side plate 5 are oppositely arranged and are perpendicular to the supporting plate 3, and the lengths and the widths of the first side plate 4 and the second side plate 5 are the same. Specifically, the brackets 2 are stacked and provided with a plurality of slots of the accommodating grooves of all the brackets 2 facing the same direction, that is, when the adjacent brackets 2 are stacked and provided, the pallet 3 of one bracket 2 is in contact with the edges of the first side plate 4 and the second side plate 5 of the other bracket 2, meanwhile, an insulating layer 6 is provided on one side of the first side plate 4 away from the pallet 3, an insulating layer 6 is provided on one side of the second side plate 5 away from the pallet 3, and the length of the insulating layer 6 is greater than or equal to the length of the first side plate 4 in the length direction of the bracket 2. As can be seen from the above, the contact between the adjacent battery modules is that the supporting plate 3 of one bracket 2 contacts with the insulating layer 6 on the first side plate 4 and the insulating layer 6 on the second side plate 5 of the other bracket 2, so that the short circuit between the adjacent battery modules is avoided, and the safety of the battery is improved.

Meanwhile, as the slots of the accommodating grooves of all the brackets 2 face the same direction, in the adjacent battery modules, the battery cells 1 positioned in one module unit and close to the slots are in contact with the supporting plate 3 (specifically referred to as the outer side surface of the supporting plate) in the adjacent battery module unit, that is, the heat inside the battery cells 1 positioned at the slots can be led out through the supporting plate 3 of the bracket 2 in the adjacent module unit, so that the efficient heat conduction inside the battery cells 1 is improved, and the service life of the battery cells 1 is prolonged.

It should be noted that, the insulating layer 6 may be coated on the first side plate 4 and the second side plate 5 by using an insulating material, or may be an insulating film, and in addition, the supporting plate 3 is provided with a limiting groove 9 for clamping the electric core 1, so as to improve the stability of the module of the electric core 1.

Further, as shown in fig. 3 and 4, at least one cell 1 is arranged in the accommodating groove, the cell 1 close to the notch of the accommodating groove is provided with a side sealing edge 7, a local section 13 is arranged on the first side plate 4 between the side sealing edge 7 and the side of the first side plate 4 far away from the supporting plate 3, and the double-sided coverage rate of the insulating layer 6 on the local section 13 is A, wherein the A is more than or equal to 50% and less than or equal to 100%. The battery module comprises a plurality of battery cells 1, wherein a plurality of battery cells 1 are accommodated in an accommodating groove, a local section 13 is arranged between a side edge sealing 7 of the battery cell 1 closest to a notch of the accommodating groove and one side of a first side plate 4 far away from a supporting plate 3, the local section 13 is positioned on the first side plate 4, the first side plate 4 is provided with a first side surface and a second side surface which are opposite, the coverage rate of an insulating layer 6 on the first side surface and the second side surface is A, wherein the A is more than or equal to 50% and less than or equal to 100%, in actual production, a bracket 2 is made of a light and thin metal material, the width direction of the first side plate 4 and the second side plate 5 is smaller than the width direction of the battery cell 1, and then the battery module is assembled, the first side plate 4 and/or the second side plate 5 of the bracket 2 are/is in contact with the battery cell 1 due to the pressure from a shell covered on the battery module, and the coverage of the insulating layer 6 reduces the possibility that the first side plate 4 and the second side plate 5 are in direct contact with the battery cell 1, and the safety of the battery module is improved.

In an alternative embodiment, as shown in fig. 3 to 5, the length of the cell 1 near the notch of the receiving groove beyond the first side plate 4 in the width direction of the bracket 2 is B, wherein 0.ltoreq.b.ltoreq.2 mm. Because be provided with insulating layer 6 on first curb plate 4 and the second curb plate 5, so electric core 1 is protruding the setting for first curb plate 4, also means that in the width direction of bracket 2, first curb plate 4 is protruding the setting for insulating layer 6, and the advantage that the protrusion set up lies in, avoids bracket 2 between the adjacent battery module to contact each other, avoids the battery module short circuit, improves the security of battery.

In an alternative embodiment, the thickness of the insulating layer 6 is C, wherein 0.05 mm.ltoreq.C.ltoreq.0.15 mm. Because the bracket 2 is a heat dissipation structure of the battery cell 1, the insulating layer 6 is arranged on the bracket 2, the heat dissipation of the battery cell 1 can be influenced by the excessive thickness, and the damage can be easily caused by the excessive thickness. In the application, the thickness of the insulating layer 6 is preferably 0.1mm, and a 3M brand insulating film is adopted, so that the durability of the insulating layer 6 is considered, the heat dissipation of the battery cell 1 module is considered, and the service life and the safety of the battery cell 1 are improved.

In an alternative embodiment, the insulating layer 6 is of PET. Compared with the coated insulating layer 6, the PET insulating layer 6 is more direct, durable and stable, so that the contact between the battery cell 1 modules is safer, and the safety of the battery cell 1 modules is improved.

Further, as shown in FIGS. 5 and 6, the insulating layer 6 extends beyond the bracket 2 by a length D in the longitudinal direction of the bracket 2, wherein 0.ltoreq.D.ltoreq.5 mm. The length setting of insulating layer 6 department bracket 2 surpasses increases the security for mutual contact between the bracket 2, but because the material of insulating layer 6 is PET, when the insulating layer 6 of this material is thinner and surpass bracket 2 overlength, insulating layer 6 can the natural sagging, also can increase the cost simultaneously in influencing battery module's installation.

In an alternative embodiment, as shown in fig. 1-3, a plurality of cells 1 are accommodated in the accommodating groove, and foam 8 is arranged between adjacent cells 1. In the use of the battery cell 1, the possibility of bulge exists, when a plurality of battery cells 1 are arranged in the accommodating groove, in order to ensure that the battery cells 1 are not mutually influenced when the bulge occurs, foam 8 is particularly arranged between the battery cells 1 so as to absorb the deformation of the bulged battery cells 1, the extrusion of the bulged battery cells 1 to the adjacent battery cells 1 is avoided, the battery cells 1 can safely operate, the safety of the battery cells 1 is improved, and the fact that the battery cells 1 and the foam 8 are firmly adhered by means of heat-conducting double-sided adhesives is required to be described. In addition, only one electric core 1 can be arranged in the accommodating groove, and at the moment, the heat in the electric core 1 is efficiently led out through the supporting plate 3, the first side plate 4 and the second side plate 5.

In an alternative embodiment, the material of the bracket 2 is aluminum. Compared with other materials, the aluminum material has higher thermal conductivity, and in the materials with higher thermal conductivity coefficient, the aluminum material is relatively cheap, meanwhile, the aluminum material has ductility and can be folded, other processing modes are not needed, a containing groove for placing the battery cell 1 can be formed by folding, and the manufacturing cost of the bracket 2 is reduced.

Further, as shown in fig. 7, the first side plates 4 of the plurality of brackets 2 that are stacked are spliced to form a first assembly wall 10, and the second side plates 5 of the plurality of brackets 2 that are stacked are spliced to form a second assembly wall, and the first assembly wall 10 and/or the second assembly wall are provided with strip-shaped mailer films 12 in parallel and at intervals, so that a filling groove is enclosed on the first assembly wall 10 and/or the second assembly wall, and the filling groove is filled with heat-conducting glue, and the thickness of the heat-conducting glue is not less than the thickness of the Yu Maila films 12.

It should be noted that, in the present application, it is preferable that the first assembly wall 10 is provided with the mailer 12, the second assembly wall is not provided with the mailer 12, but is provided with the mailer 12 on the bottom plate 11 connected with the second assembly wall, and the heat-conducting glue is filled based on the thickness of the mailer 12, so that the battery cell 1 is only lifted up during the battery assembly process, and the battery cell 1 is placed on the bottom plate 11 provided with the mailer 12 and the heat-conducting glue, so that the firm adhesion between the bottom plate 11 and the battery cell 1 can be realized. In actual production, the first assembly wall 10 is a top surface, the second assembly wall is a bottom surface, if the mylar film 12 is disposed on the second assembly wall, the battery cell 1 needs to be turned over, which is inconvenient to operate, and then the mylar film 12 is disposed on the bottom plate 11 connected to the second assembly wall.

The plurality of strip-shaped maillard films 12 are parallel and arranged on the first assembly wall 10 at intervals, specifically, two maillard films 12 can be arranged, the two maillard films 12 are distributed in two edge areas of the first assembly wall 10 which are oppositely arranged, the arrangement direction of the maillard films 12 is the same as the direction of the first assembly wall 10 formed by the plurality of first side plates 4, through arranging the two maillard films 12 on the first assembly wall 10 in parallel, at intervals and in a protruding way, grooves are formed on the parts, between the two maillard films 12, of the two maillard films 12 and the first assembly wall 10, of the first assembly wall 10, the depth of the grooves is the protruding size of the maillard films 12, the thickness of the maillard films 12 and the parts, between the two maillard films 12, of the first assembly wall 10 can be filled with heat conducting glue, the thickness of the filled with glue is equal to or greater than the thickness of the maillard films 12, so that a top cover of a battery can be conveniently adhered to the top cover of the battery, and the top cover of the battery can be conveniently adhered to the first assembly wall 10, and the two maillard films can be prevented from being adhered to the top cover 10, and the two maillard films can be simultaneously arranged on the first assembly wall 12, and the two maillard films can be adhered to the top cover and the first assembly wall 12, and the second assembly wall is not equal to the thickness of the first assembly wall is not required to be provided. It should be noted that the thickness of the mylar films 12 disposed in parallel and at intervals is the same, and the thickness of the heat-conducting glue filled on the first assembly wall 10 is uniform, so that the heat inside the battery cell 1 can be uniformly conducted out, and it should be noted that the heat-conducting glue can be but not limited to heat-conducting silica gel.

In other embodiments, the mylar film 12 may be disposed on the second assembly wall, and a filling groove filled with the heat-conducting glue is also formed on the second assembly wall, and the placement of the mylar film 12 is different according to the actual situation, for example, the mylar film 12 may be disposed on only one of the first assembly wall 10 or the second assembly wall.

In addition, the embodiment of the application also provides a battery module which comprises a shell, an electric control module, a liquid cooling module and the battery module. The battery module has the beneficial effects brought by the battery module, please refer to the description of the battery module, and the description is omitted herein.

The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are used for more clearly describing the technical solutions, and are not intended to limit the scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims

1. A battery module, comprising:

A battery cell;

2. The battery module of claim 1, wherein at least one of the cells is disposed in the receiving groove, the cell adjacent to the slot opening of the receiving groove has a side seal, a partial section is disposed on the first side plate between the side seal and a side of the first side plate away from the pallet, and the insulating layer has a double-sided coverage of a at the partial section, wherein a is 50% or less and 100% or less.

3. The battery module according to claim 1, wherein the length of the cell, which is close to the notch of the accommodation groove, beyond the first side plate in the width direction of the bracket is B, wherein 0.ltoreq.b.ltoreq.2 mm.

4. The battery module of claim 1, wherein the insulating layer has a thickness C, wherein 0.05mm C0.15 mm.

5. The battery module according to claim 1, wherein the insulating layer exceeds the bracket by a length D in a length direction of the bracket, wherein 0.ltoreq.d.ltoreq.5 mm.

6. The battery module of claim 1, wherein the insulating layer is PET.

7. The battery module of claim 1, wherein a plurality of the cells are accommodated in the accommodation groove, and foam is disposed between adjacent cells.

8. The battery module of claim 1, wherein the bracket is aluminum.

9. The battery module according to claim 1, wherein the first side plates of the plurality of brackets arranged in a stacked manner are spliced to form a first assembly wall, and the second side plates of the plurality of brackets arranged in a stacked manner are spliced to form a second assembly wall, and the first assembly wall and/or the second assembly wall are provided with elongated mylar films in parallel and at intervals so as to enclose a filling groove on the first assembly wall and/or the second assembly wall, and the filling groove is filled with a heat-conducting glue, and the thickness of the heat-conducting glue is not less than the thickness of the mylar film.

10. A battery module comprising a housing, an electric control module, a liquid cooling module, and the battery module of any one of claims 1-9.