CN221080245U

CN221080245U - Battery module

Info

Publication number: CN221080245U
Application number: CN202322772488.7U
Authority: CN
Inventors: 王阳; 项建; 赵紫辉; 易昊昊
Original assignee: Wuhan Eve Energy Storage Co ltd
Current assignee: Wuhan Eve Energy Storage Co ltd
Priority date: 2023-10-13
Filing date: 2023-10-13
Publication date: 2024-06-04
Anticipated expiration: 2033-10-13

Abstract

The utility model provides a battery module, which comprises: the shell is provided with a plurality of accommodating grooves, the accommodating grooves are distributed at intervals along the length direction of the shell, the extending direction of the accommodating grooves is arranged at an angle with the width direction of the shell, the accommodating grooves are provided with first openings, and the first openings are positioned at one ends of the accommodating grooves which are higher in the height direction of the shell; the battery cells are arranged in the accommodating grooves through the first openings and are in one-to-one correspondence with the accommodating grooves. By applying the technical scheme of the utility model, the technical problem of low stability of the battery module in use can be solved.

Description

Battery module

Technical Field

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

Background

As is well known, a recyclable battery generally includes a case, a cover, a battery module, and other components, etc., wherein the battery module is a key component constituting a battery system. In many operating scenes, the battery module often fails due to poor insulation, insufficient connection and hoisting strength, thermal runaway, thermal diffusion and the like.

In the related art, the electric cores in the battery module are all in a stacking arrangement mode, and after stacking, the electric cores are clamped by using the steel belt, but the requirement on the clamping force is higher in the mode, the process accuracy requirement on the electric core stacking is higher in the grouping mode, meanwhile, the steps are complicated, and when the single electric core is out of control, the adjacent electric core is easily influenced, so that the heat diffusion is caused, the normal operation of the electric core is influenced, and the stability of the device in use is reduced.

Disclosure of utility model

The embodiment of the utility model provides a battery module, which can improve the technical problem of low stability of the battery module in use.

An embodiment of the present utility model provides a battery module, including: the shell is provided with a plurality of accommodating grooves, the accommodating grooves are distributed at intervals along the length direction of the shell, the extending direction of the accommodating grooves is arranged at an angle with the width direction of the shell, the accommodating grooves are provided with first openings, and the first openings are positioned at one ends of the accommodating grooves which are higher in the height direction of the shell; the battery cells are arranged in the accommodating grooves through the first openings and are in one-to-one correspondence with the accommodating grooves.

In one embodiment the angle between the direction of extension of the receiving groove and the width direction of the housing is between 0 deg. -60 deg..

In an embodiment, the accommodating groove is further provided with a limiting part, the limiting part is located at one end of the accommodating groove, which is lower in the height direction of the shell, the first opening and the limiting part are respectively communicated with the accommodating groove, and the limiting part is used for limiting the battery cell.

In an embodiment, the limiting portion includes a plurality of limiting units, the plurality of limiting units are arranged along the circumferential direction of the accommodating groove at intervals, and one side of the plurality of limiting units, which faces the first opening, is abutted against the bottom of the battery cell to limit the battery cell.

In an embodiment, the battery module further comprises a connecting piece, and two adjacent electric cores are electrically connected through the connecting piece.

In an embodiment, the connecting piece is provided with an avoidance portion, the avoidance portion is arranged corresponding to the connection position between two adjacent containing grooves, and the avoidance portion protrudes out of the side wall of the shell along the extending direction of the containing grooves.

In an embodiment, the connecting piece includes first connecting portion, second connecting portion and the third connecting portion that connect in order and be the angle setting, and first connecting portion and third connecting portion are located the same side of second connecting portion, and first connecting portion is connected with the one end of second connecting portion, and third connecting portion is connected with the other end of second connecting portion, and second connecting portion forms dodges the portion.

In an embodiment, the second connecting portion comprises a first section, a second section and a third section which are sequentially connected and are arranged in an angle mode, the first section and the third section are located on the same side of the second section, one end, far away from the second section, of the first section is connected with the first connecting portion in an angle mode, and one end, far away from the second section, of the third section is connected with the third connecting portion in an angle mode.

In an embodiment, the housing includes a plurality of sets of receiving units, each set of receiving units including a plurality of receiving grooves, the plurality of sets of receiving units being arranged at intervals along a height direction of the housing.

In an embodiment, the battery module further comprises a connecting structure, the connecting structure is located on two side walls of the shell body, which are arranged along the length direction, and the shell body is connected with the external assembly through the connecting structure.

In an embodiment, the connection structure comprises a connection groove and a connection column, the connection groove is concavely arranged on the shell along the length direction of the shell, the connection column is positioned in the connection groove, extends along the height direction of the shell, and is used for being connected with the external component.

By applying the technical scheme of the utility model, the shell is provided with the plurality of accommodating grooves and the plurality of first openings, and the plurality of battery cores are respectively arranged in the accommodating grooves corresponding to the plurality of battery cores, so that an insulating layer is not required to be added to each battery core during operation, the production cost of the device is reduced, meanwhile, the battery cores cannot be mutually influenced, and the stability of the device during operation is maintained.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a battery module according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an assembly of a housing and a stopper provided by an embodiment of the present utility model;

fig. 3 is a schematic top view of a battery module according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view at A-A in FIG. 3;

fig. 5 is a schematic structural view of the connector.

Wherein the above figures include the following reference numerals:

10. a housing; 11. a receiving groove;

20. a battery cell;

30. A limit part; 31. a limit unit;

40. A connecting piece; 41. a first connection portion; 42. a second connecting portion; 421. a first section; 422. a second section; 423. a third section; 43. a third connecting portion;

50. A connection structure; 51. a connecting groove; 52. a connecting column; x, length direction of the shell; y, width direction of the shell; z, the height direction of the shell.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a battery module including a case 10 and a plurality of battery cells 20. Wherein, casing 10 has a plurality of holding tanks 11, and a plurality of holding tanks 11 are arranged along the length direction interval of casing 10, and the extending direction of holding tank 11 is the angle setting with the width direction of casing 10, and holding tank 11 has first opening, and first opening is located holding tank 11 at the higher one end in the direction of height of casing 10, and a plurality of electric cores 20 set up in holding tank 11 through first opening, and electric core 20 and holding tank 11 one-to-one setting.

By applying the technical scheme of the utility model, the housing 10 is provided with the plurality of accommodating grooves 11, and the plurality of battery cells 20 are respectively arranged in the corresponding accommodating grooves 11, so that an insulating layer is not required to be added to each battery cell 20 in operation, the production cost of the device is reduced, meanwhile, the battery cells 20 cannot be mutually influenced, and the stability of the device in operation is maintained.

Further, the angle between the extending direction of the accommodating groove 11 and the width direction of the housing 10 is between 0 ° and 60 °. When the angle between the two is 0 degrees, the extending direction of the accommodating groove 11 can be parallel to the width direction of the shell 10, so that the battery cell can be placed in the accommodating groove to meet the accommodating requirement of the device; when the angle between the two is greater than 0, the accommodating groove 11 is obliquely arranged relative to the shell 10, the battery cell 20 can slide to the installation position along the accommodating groove 11 under the action of self gravity in the installation process, and meanwhile, the risk that the battery cell slides from the accommodating groove 11 in the transportation process of the device can be prevented, so that the installation difficulty of the battery cell 20 is reduced, the installation efficiency of the battery cell 20 is improved, and meanwhile, the stability of the device in operation is guaranteed. In the present application, the angle is set to 45 °. Alternatively, the angle may be specifically set to 20 °, 40 ° or 60 °, and the specific setting condition should be selected according to the use environment of the device, so long as the use requirement of the device can be satisfied.

In the present application, X is the length direction of the casing 10; y is the width direction of the housing 10; z is the height direction of the housing 10.

In the present application, the casing 10 is made of a composite material, and the material has the advantages of high mechanical strength, high temperature resistance, good insulation performance, etc., so that when the single cell 20 has other problems such as overheating or electric leakage, the temperature cannot be transmitted to other adjacent cells 20, the normal operation of other cells 20 cannot be affected, the self structure of the casing 10 cannot be damaged, and the normal operation of the whole device can be ensured.

Specifically, the accommodating groove 11 further has a limiting portion 30, the limiting portion 30 is located at one end of the accommodating groove 11, which is lower in the height direction of the housing 10, the first opening and the limiting portion 30 are respectively communicated with the accommodating groove 11, and the limiting portion 30 is used for limiting the battery cell 20. Through the structure, the accommodating groove 11 is arranged to penetrate through the shell 10, so that the overall weight of the device can be reduced, the device is convenient to process, the light weight of the device can be realized, the production cost of the device can be reduced, the position of the battery cell 20 can be limited by the limiting part 30, and the phenomenon that the battery cell 20 generates relative displacement in the accommodating groove 11 can be prevented.

In the embodiment of the application, the first opening is matched with the cross section shape of the accommodating groove 11, so that the processing difficulty of the device can be further reduced, and the battery cell 20 is convenient to install and replace.

Further, the limiting portion 30 includes a plurality of limiting units 31, the plurality of limiting units 31 are arranged along the circumferential direction of the accommodating groove 11 at intervals, and one side of the plurality of limiting units 31 facing the first opening abuts against the bottom of the battery cell 20 to limit the battery cell 20. By such arrangement, the limiting unit 31 can be in uniform contact with the battery cell 20, and thus the limiting effect of the limiting unit 31 can be improved. In the present application, the cross-sectional shape of the limiting unit 31 is a triangle structure, which is simple and easy to process, so that the production cost of the device can be further reduced, and the processing efficiency of the device is improved.

Specifically, the battery module further includes a connecting member 40, and two adjacent battery cells 20 are electrically connected through the connecting member 40. In the embodiment of the application, the connecting piece 40 is specifically an aluminum row, and the aluminum row has light weight and good flexibility due to small density, so that the overall weight of the battery pack can be reduced when the connecting piece is used for the conductive connecting piece of the battery module, meanwhile, the aluminum row has high strength and hardness, good mechanical support and structural stability can be provided, the connecting piece is suitable for the situation that the battery is arranged and fixed with high requirements, and deformation and loosening of the battery during vibration and collision can be effectively prevented, so that the aluminum row can meet the use requirements of users in different environments, and the application range of the device is improved.

Further, the connecting member 40 has an avoiding portion, the avoiding portion is disposed corresponding to a connection portion between two adjacent accommodating grooves 11, and the avoiding portion protrudes from a side wall of the housing 10 along an extending direction of the accommodating grooves 11. By this arrangement, the metal fatigue failure caused by the long-term contact friction between the connecting piece 40 and the housing 10 can be prevented, so that the service life of the connecting piece 40 can be prolonged, and the stable operation of the device can be ensured.

As shown in fig. 5, the connecting member 40 includes a first connecting portion 41, a second connecting portion 42 and a third connecting portion 43 which are sequentially connected and are arranged in an angle, the first connecting portion 41 and the third connecting portion 43 are located at the same side of the second connecting portion 42, the first connecting portion 41 is connected with one end of the second connecting portion 42, the third connecting portion 43 is connected with the other end of the second connecting portion 42, and the second connecting portion 42 forms an avoidance portion. In the embodiment of the present application, the second connection portion 42 has an arch bridge structure, which not only facilitates the processing of the assembly, but also has a simple structure, thereby further improving the processing efficiency of the assembly.

Further, the second connecting portion 42 includes a first segment 421, a second segment 422 and a third segment 423 which are sequentially connected and are arranged in an angle, the first segment 421 and the third segment 423 are located on the same side of the second segment 422, one end, far away from the second segment 422, of the first segment 421 is connected in an angle with the first connecting portion 41, and one end, far away from the second segment 422, of the third segment 423 is connected in an angle with the third connecting portion 43. The included angle between the first section 421 and the second section 422, and the included angle between the second section 422 and the third section 423 are right angles, so that not only can the mutual friction loss between the second section 422 and the casing 10 be prevented, but also the stability of the structure can be ensured, and the safety of the adjacent battery cells 20 during connection can be ensured.

Specifically, the housing 10 includes a plurality of sets of accommodating units, each set of accommodating units including a plurality of accommodating grooves 11, the plurality of sets of accommodating units being arranged at intervals in the height direction of the housing 10. By the arrangement, the space of the shell 10 is utilized as much as possible, so that the installation quantity of the battery cells 20 can be increased, the battery capacity of the battery module can be increased, and the device can meet different use environments.

In the present application, the housing 10 includes two sets of receiving units, which are disposed symmetrically up and down in the height direction of the housing 10. Optionally, the number of the accommodating units is not limited, and the specific setting condition should be selected according to the use environment of the device, so that the applicability of the device can be further improved.

Further, the battery module further comprises a connecting structure 50, the connecting structure 50 is located on two side walls of the casing 10 along the length direction, and the casing 10 is connected with the external connection assembly through the connecting structure 50. By such arrangement, when the housing 10 is connected with the external component, the uniformity of stress during connection can be ensured, wherein in the embodiment of the application, the connecting structure 50 is a hoisting structure, so that the housing 10 can be conveniently transported and hoisted, and the transportation efficiency of the housing 10 can be improved.

Specifically, the connection structure 50 includes a connection groove 51 and a connection post 52, the connection groove 51 is concavely provided on the housing 10 along the length direction of the housing 10, the connection post 52 is located in the connection groove 51, and the connection post 52 extends along the height direction of the housing 10, and the connection post 52 is used for connecting with an external connection component. In the application, the connecting post 52 is a cylindrical locking piece, one end of the external component is an openable ring lifting hook, and the ring and the locking piece can lift and move the shell 10 after being locked, so that the structure is simple, the connection strength of the external component and the connecting structure 50 can be ensured, and meanwhile, the movement of the shell 10 is more convenient, so that the integral lifting efficiency of the device can be further improved.

By applying the technical scheme of the utility model, the housing 10 is provided with the plurality of accommodating grooves 11 and the plurality of first openings, and the plurality of battery cells 20 are respectively arranged in the accommodating grooves 11 corresponding to the plurality of battery cells, so that an insulating layer is not required to be added when each battery cell 20 runs, the production cost of the device is reduced, meanwhile, the battery cells 20 cannot influence each other, the stability of the device in running is maintained, the accommodating grooves 11 are arranged at an angle with the housing 10, and the battery cells 20 can slide to the mounting positions along the accommodating grooves 11 under the action of self gravity in the mounting process, thereby reducing the mounting difficulty of the battery cells 20 and improving the mounting efficiency of the battery cells 20.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A battery module, characterized in that the battery module comprises:

A housing (10) having a plurality of accommodating grooves (11), the plurality of accommodating grooves (11) being arranged at intervals along a length direction of the housing (10), an extending direction of the accommodating grooves (11) being arranged at an angle to a width direction of the housing (10), the accommodating grooves (11) having a first opening at an end of the accommodating grooves (11) which is higher in a height direction of the housing (10);

the battery cells (20) are arranged in the accommodating groove (11) through the first openings, and the battery cells (20) are arranged in one-to-one correspondence with the accommodating groove (11).

2. The battery module according to claim 1, wherein an angle between the extending direction of the receiving groove (11) and the width direction of the case (10) is between 0 ° -60 °.

3. The battery module according to claim 1, wherein the accommodating groove (11) further has a limiting portion (30), the limiting portion (30) is located at an end of the accommodating groove (11) lower in a height direction of the housing (10), the first opening and the limiting portion (30) are respectively communicated with the accommodating groove (11), and the limiting portion (30) is used for limiting the battery cell (20).

4. A battery module according to claim 3, wherein the limiting portion (30) includes a plurality of limiting units (31), the plurality of limiting units (31) are arranged at intervals along the circumference of the accommodating groove (11), and one side of the plurality of limiting units (31) facing the first opening abuts against the bottom of the battery cell (20) to limit the battery cell (20).

5. The battery module according to any one of claims 1 to 4, further comprising a connecting member (40), wherein adjacent two of the cells (20) are electrically connected by the connecting member (40).

6. The battery module according to claim 5, wherein the connecting member (40) has an avoidance portion, the avoidance portion is disposed at a junction between two adjacent receiving grooves (11), and the avoidance portion protrudes from a side wall of the case (10) along an extending direction of the receiving grooves (11).

7. The battery module according to claim 6, wherein the connecting member (40) includes a first connecting portion (41), a second connecting portion (42) and a third connecting portion (43) which are connected in sequence and are disposed at an angle, the first connecting portion (41) and the third connecting portion (43) are located on the same side of the second connecting portion (42), the first connecting portion (41) is connected with one end of the second connecting portion (42), the third connecting portion (43) is connected with the other end of the second connecting portion (42), and the second connecting portion (42) forms the avoiding portion.

8. The battery module according to claim 7, wherein the second connection part (42) includes a first section (421), a second section (422), and a third section (423) that are sequentially connected and are disposed at an angle, the first section (421) and the third section (423) are located at the same side of the second section (422), one end of the first section (421) away from the second section (422) is connected at an angle with the first connection part (41), and one end of the third section (423) away from the second section (422) is connected at an angle with the third connection part (43).

9. The battery module according to claim 1, wherein the housing (10) includes a plurality of sets of receiving units, each set of receiving units including a plurality of the receiving grooves (11), the plurality of sets of receiving units being arranged at intervals in a height direction of the housing (10).

10. The battery module according to claim 1, further comprising a connection structure (50), the connection structure (50) being located on both side walls of the case (10) disposed in a length direction, the case (10) being connected with an external connection assembly through the connection structure (50).

11. The battery module according to claim 10, wherein the connection structure (50) includes a connection groove (51) and a connection post (52), the connection groove (51) is concavely provided on the housing (10) along a length direction of the housing (10), the connection post (52) is located in the connection groove (51), and the connection post (52) extends along a height direction of the housing (10), the connection post (52) is used for connection with the external connection assembly.