A dual layer battery module device

Abstract

The utility model discloses a double -deck battery module device belongs to the battery field. Double -deck battery module device of the utility model, include: box, be used for accommodating battery module, battery module is equipped with support device between battery module and box, support device is used for fixing battery module in the box, wherein, battery module contains first module and second module, first module and second module are placed and fixedly connected in the support device of superposition, define the plane of the line of the barycenter of first module and second module barycenter as S face, the included angle range of the line of the barycenter of first module and second module barycenter and gravity direction on S face is: 1 to 5. The utility model discloses battery module is fixed in the box through support device and the barycenter of first module and second module is not on the same straight line, can satisfy the demand of multiple box modeling change.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a double-layer battery module device. Background Technology

[0002] As the popularity of new energy electric vehicles increases, the variety of models is also growing. The battery pack system, as the heart of this system, faces increasingly higher energy supply requirements. Therefore, in order to meet high energy demands within a limited space, a dual-layer module design has emerged.

[0003] Existing dual-layer module designs often employ stacking two identical single-layer and double-layer modules with their centers of gravity aligned on the same straight line. For example, Chinese Patent CN207282567U describes a dual-layer battery module fixing structure for power batteries. This structure features an upper module connecting plate at the lower end of the upper module support, with upper connecting holes on the plate. The lower module support has a top connecting plate at the upper end, with top connecting holes on the plate. The lower module support also has a bottom connecting plate at the lower end, with bottom connecting holes on the plate. This dual-layer battery module fixing structure is simple in structure, low in manufacturing cost, and can conveniently and reliably fix and limit the upper and lower battery modules, ensuring the battery module is a single-piece structure, improving the overall strength of the battery module, and offering high assembly efficiency, facilitating mass production.

[0004] However, the above design is difficult to meet the growing demand for changes in box shape. How to make the center of gravity of the upper and lower modules offset to meet the needs of changes in box shape is an urgent problem to be solved. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies, which often use two identical single-layer and double-layer modules stacked on the same straight line, making it difficult to meet the growing demand for different box shapes. This invention provides a double-layer battery module device.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] This utility model discloses a double-layer battery module device, comprising: a housing for accommodating a battery module; a battery module, wherein a support device is provided between the battery module and the housing, the support device being used to fix the battery module within the housing; wherein the battery module includes a first module and a second module, the first module and the second module being stacked and fixedly connected to the support device; the plane containing the line connecting the center of gravity of the first module and the center of gravity of the second module is defined as the S-plane, and the angle between the line connecting the center of gravity of the first module and the center of gravity of the second module and the direction of gravity on the S-plane ranges from 1° to 5°. The battery module is fixed within the housing by the support device, and the centers of gravity of the first module and the second module are not on the same straight line, which can meet the needs of various housing shape variations.

[0010] As a further improvement of this utility model, the support device includes a first support beam and a second support beam. The first module is fixedly connected to the first support beam, and the second module is fixedly connected to the second support beam. The first module is fixed in the housing by the first support beam, and the second module is fixed in the housing by the second support beam. The first module and the second module have their own independent fixed support beams, which increases the stability of the battery module in the housing.

[0011] As a further improvement of this utility model, the plane containing the first support beam is defined as A, and the ratio of the area of ​​the overlapping portion of the projection of the second support beam onto A and the projection of the first support beam onto A to the projected area of ​​the first support beam onto A ranges from 0.9 to 0.95. The battery module is fixed in the housing by a support device, and the centers of gravity of the first module and the second module are not on the same straight line, which can meet the needs of various housing shape changes.

[0012] As a further improvement of this utility model, the first support beam includes two parallel support beams, which are respectively fixedly connected to the two side walls of the box body. End plates are provided on both sides of the first module, and the two end plates are fixedly connected to the two support beams. The first module is fixedly connected to the first support beam via the end plates, ensuring the stability of the first module inside the box body.

[0013] As a further improvement of this utility model, the second support beam includes two parallel support beams, which are connected to the first support beam via brackets. End plates are provided on both sides of the second module, and the two end plates are fixedly connected to the two support beams. The fixed connection between the second module and the second support beam via the end plates ensures the stability of the second module inside the housing. Furthermore, the second support beam is fixed to the first support beam via brackets, preventing the housing from deforming due to the second support beam being completely welded to the inner wall of the housing.

[0014] As a further improvement of this utility model, the side wall of the bracket is fixedly connected to the side wall of the housing. This fixed connection further increases the stability of the bracket and the second support beam.

[0015] As a further improvement of this utility model, four supports are provided, each located at the end of one of the two support beams of the second support beam. These four end-fixed supports effectively and stably support the second support beam, increasing the stability of the second module within the housing.

[0016] As a further improvement of this utility model, a support plate is provided between the two support beams of the second support beam. The support plate can distribute the gravity exerted by the second module on the second support beam, thereby extending the service life of the second support beam.

[0017] As a further improvement of this utility model, the support plate is fixedly connected to the side of the second support beam near the first support beam. The second support beam has a certain thickness so that after the end plate of the second module contacts the upper surface of the second support beam, the bottom of the second module can abut against the support plate, thereby dispersing the gravity exerted by the second module on the second support beam and extending the service life of the second support beam.

[0018] As a further improvement of this utility model, a support block is connected between the support beam of the second support beam and the side wall of the box body. The support block increases the stability of the connection between the second support beam and the box body, ensuring the stability of the second module on the second support beam.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0021] (1) The battery module of this utility model is fixed in the box by a support device and the center of gravity of the first module and the second module are not on the same straight line, which can meet the needs of various box shape changes.

[0022] (2) The first module of this utility model is fixed in the box by the first support beam, and the second module is fixed in the box by the second support beam. The first module and the second module have their own independent fixed support beams, which increases the stability of the battery module in the box.

[0023] (3) The second module of this utility model is fixedly connected to the second support beam through the end plate, which ensures the stability of the second module inside the box. The second support beam is fixed on the first support beam through the bracket, which avoids the problem of the box being deformed due to the second support beam being completely welded to the inner wall of the box. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a dual-layer battery module device according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the housing structure of a dual-layer battery module device according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram showing the position of the bracket of a dual-layer battery module device according to an embodiment of this application inside the housing;

[0027] Figure 4 This is a schematic diagram of the second support structure of a dual-layer battery module device according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the first support structure of a dual-layer battery module device according to an embodiment of this application;

[0029] Explanation of the labels in the diagram:

[0030] 100. Box body;

[0031] 200, Battery module; 210, First module; 220, Second module; 230, End plate;

[0032] 300, Support device; 310, First support beam; 320, Second support beam; 330, Support beam; 340, Support plate; 350, Support block;

[0033] 400, bracket; 410, first bracket; 411, connector; 420, second bracket; 421, vertical plate. Detailed Implementation

[0034] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0035] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0036] Combination Figures 1 to 5This embodiment of a dual-layer battery module 200 device includes: a housing 100 for accommodating the battery module 200; a battery module 200, wherein a support device 300 is provided between the battery module 200 and the housing 100, the support device 300 being used to fix the battery module 200 in the housing 100; wherein the battery module 200 includes a first module 210 and a second module 220, the first module 210 and the second module 220 being stacked and fixedly connected to the support device 300, and the plane containing the line connecting the center of gravity of the first module 210 and the center of gravity of the second module 220 is defined as the S-plane, and the angle between the line connecting the center of gravity of the first module 210 and the center of gravity of the second module 220 on the S-plane and the direction of gravity is in the range of 1° to 5°. The battery module 200 is fixed in the housing 100 by the support device 300, and the centers of gravity of the first module 210 and the second module 220 are not on the same straight line, which can meet the needs of various housing 100 shape changes.

[0037] The support device 300 includes a first support beam 310 and a second support beam 320. The first module 210 is fixedly connected to the first support beam 310, and the second module 220 is fixedly connected to the second support beam 320. The first module 210 is fixed inside the housing 100 by the first support beam 310, and the second module 220 is fixed inside the housing 100 by the second support beam 320. The first module 210 and the second module 220 each have their own independent fixed support beam, which increases the stability of the battery module 200 inside the housing 100.

[0038] Specifically, the housing 100 includes side walls, and the space formed by the side walls is used to house the battery module 200. The battery module 200 includes a first module 210 and a second module 220. In the housing 100, the first module 210 is located below the second module 220. The first module 210 and the second module 220 are stacked. The first module 210 and the second module 220 are the same size. In the prior art, when the first module 210 and the second module 220 are the same size, the second module 220 is often placed on top of the first module 210. The two modules are fixed in the housing 100 by direct stacking. The two modules are often directly fixed to the load-bearing component placed at the bottom of the housing 100. The load-bearing component is often connected to the side wall of the housing 100 by through welding. In this way, the weight of the two modules is actually applied to the side wall of the housing 100, which often causes the housing 100 to deform and has a short service life. Therefore, the dual-layer battery module 200 device of this application uses a support device 300 to solve this problem. Specifically, the support device 300 includes a first support beam 310 and a second support beam 320, both of which are fixedly connected to the inner wall of the housing 100. The first module 210 is fixedly connected to the first support beam 310, and the second module 220 is fixedly connected to the second support beam 320.

[0039] In a feasible specific solution, the plane containing the first support beam 310 is defined as A. The ratio of the area of ​​the overlapping portion of the projection of the second support beam 320 onto A and the projection of the first support beam 310 onto A to the projected area of ​​the first support beam 310 onto A ranges from 0.9 to 0.95. That is, the centers of gravity of the first module 210 on the first support beam 310 and the second module 220 on the second support beam 320 do not coincide. The first module 210 is below the second module 220. The eccentric arrangement of the first module 210 and the second module 220 can provide a new approach to the internal structural design and the shape design of the box 100.

[0040] More specifically, the first support beam 310 includes two parallel support beams 330, which are respectively fixedly connected to the two side walls of the housing 100. The first module 210 has end plates 230 on both sides, and the two end plates 230 are fixedly connected to the two support beams 330. The second support beam 320 includes two parallel support beams 330, which are connected to the first support beam 310 via brackets 400. The second module 220 has end plates 230 on both sides, and the two end plates 230 are fixedly connected to the two support beams 330.

[0041] Specifically, the two support beams 330 of the first support beam 310 are fixedly connected to the side wall of the housing 100. The first module 210 is fixedly connected to the support beams 330 of the first support beam 310 via end plates 230 on both sides to prevent the first module 210 from swaying on the first support beam 310. The second support beam 320 also includes two support beams 330, which are fixedly connected to the side wall of the housing 100. The second module 220 is also fixedly connected to the support beams 330 of the second support beam 320 via two end plates 230. Four brackets 400 are provided between the support beams 330 of the first support beam 310 and the support beams 330 of the second support beam 320. The side walls of the four brackets 400 are fixedly connected to the side wall of the housing 100, and the four brackets 400 are respectively located at the ends of the two support beams 330 of the second support beam 320.

[0042] Two of the four supports 400 are located on the same side of the first support beam 310 and the second support beam 320, at a certain distance from the side walls at both ends of the housing 100. This distance ensures that the centers of gravity of the second module 220 and the first module 210 are not on the same vertical line. Specifically, the two supports 400 are defined as the first support 410. The first support 410 is U-shaped and has two protruding connectors 411 at its lower end, which are fixedly connected to the first support beam 310. The upper end of the first support 410 has a platform that is fixedly connected to the lower end of the second support beam 320. The upper end of the second support 420 also has a platform that is fixedly connected to the lower end of the second support beam 320. A vertical plate 421 is also provided on one side of the platform at the upper end of the second support 420 and fixedly connected to the side wall of the second support beam 320 to ensure that the second support beam 320 will not slide laterally. At the same time, the vertical plate 421 is also fixedly connected to the inner wall of the housing 100, increasing the stability of the second support 420. The lower end of the second bracket 420 is fixedly connected to the first support beam 310. The second support beam 320 is fixedly connected to the first support beam 310 through four brackets 400, which greatly increases the stability of the second support beam 320.

[0043] In one specific embodiment, a support plate 340 is provided between the two support beams 330 of the second support beam 320. The support plate 340 is fixedly connected to the side of the second support beam 320 near the first support beam 310. A support block 350 is connected between the support beams 330 of the second support beam 320 and the side wall of the box body 100. There are three support plates 340, which are located at the lower end of the second support beam 320, increasing the stability of the second support beam 320. The support block 350 and the support plate 340 cooperate to further increase the stability of the second support beam 320.

[0044] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A double-layer battery module device, characterized in that: include: The housing is used to house the battery modules; A battery module is provided, and a support device is provided between the battery module and the housing, the support device being used to fix the battery module in the housing; The battery module includes a first module and a second module. The first module and the second module are stacked and fixedly connected to the support device. The plane containing the line connecting the center of gravity of the first module and the center of gravity of the second module is defined as the S-plane. The angle between the line connecting the center of gravity of the first module and the center of gravity of the second module and the direction of gravity on the S-plane is in the range of 1° to 5°.

2. The dual-layer battery module device according to claim 1, characterized in that: The support device includes a first support beam and a second support beam, the first module is fixedly connected to the first support beam, and the second module is fixedly connected to the second support beam.

3. The double-layer battery module device according to claim 2, characterized in that: Define the plane containing the first support beam as A, and the ratio of the area of ​​the overlapping portion of the projection of the second support beam onto A and the projection of the first support beam onto A to the area of ​​the projection of the first support beam onto A is in the range of 0.9 to 0.

95.

4. The double-layer battery module device according to claim 3, characterized in that: The first support beam includes two parallel support beams, which are respectively fixedly connected to the two side walls of the box body. The first module has end plates on both sides, and the two end plates are fixedly connected to the two support beams.

5. The dual-layer battery module device according to claim 3, characterized in that: The second support beam includes two parallel support beams, which are connected to the first support beam by a bracket. The second module has end plates on both sides, and the two end plates are fixedly connected to the two support beams.

6. The dual-layer battery module device according to claim 5, characterized in that: The side wall of the bracket is fixedly connected to the side wall of the box.

7. The double-layer battery module device according to claim 6, characterized in that: The bracket is provided in four parts, and the four brackets are respectively located at the ends of the two support beams of the second support beam.

8. The double-layer battery module device according to claim 7, characterized in that: A support plate is provided between the two support beams of the second support beam.

9. The double-layer battery module device according to claim 8, characterized in that: The support plate is fixedly connected to the side of the second support beam near the first support beam.

10. The dual-layer battery module device according to claim 9, characterized in that: A support block is connected between the support beam of the second support beam and the side wall of the box body.

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