Long battery module and battery pack
By introducing structures such as the middle plate and through-groove into the battery module, the fixing and instability problem caused by the excessively long arrangement of the battery cell is solved, and the structural stability and cost reduction of the battery module are achieved.
Patent Information
- Application Number
- CN202420527552.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-19
AI Technical Summary
When the battery cell arrangement length is too long, the end plate is difficult to stabilize and fix, resulting in the battery cell deformation, and multiple modules need to be set up to increase product size and production costs.
The battery cells are set at intervals between the middle plate and the end plate, and the structural strength is enhanced through the through grooves and weight reduction grooves. The battery cells are fixed with insulating sheets and steel strips to form an overall structure to reduce material types and costs.
The stable fixation of the battery cell is achieved, the strength and stability of the module structure is enhanced, the number of modules and product size is reduced, and the production cost is reduced.
Smart Images
Figure CN222191010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, and in particular to a long battery module and a battery pack. Background Art
[0002] In the prior art, a battery module usually includes two end plates and multiple cells. The two end plates are spaced apart and fixed on the outer shell of the battery pack. Each cell is arranged between the two end plates, and each cell is arranged in sequence along a straight line. There are usually requirements for the number of cells between the two end plates of each battery module. The length of the cell arrangement should not be too long. If the length of the cell arrangement is too long, the weight of the battery module is large, and the two end plates are not enough to stably fix each cell. It is easy to have problems such as unstable fixation of each cell between the two end plates and easy deformation of the cells in a row. The short length of the battery module will require multiple battery modules to be set in the same battery pack, such as four or even more. As a result, there are many types of module materials in the battery pack, large product size, many battery module assembly processes, large labor workload for workers, and high production costs for the battery pack.
[0003] In view of this, the present utility model is proposed. Utility Model Content
[0004] The utility model provides a long battery module and a battery pack.
[0005] The utility model adopts the following technical solutions:
[0006] The first object of the present application is to provide a long battery module, comprising:
[0007] Two end plates, the two end plates are spaced apart;
[0008] A middle plate, the middle plate is located between the two end plates, and a gap is formed between the middle plate and two adjacent ones of the end plates;
[0009] A plurality of battery cells, each of the battery cells being disposed in each of the gaps;
[0010] Wherein, a connecting portion for connecting and fixing is arranged on the middle plate.
[0011] Optionally, the middle plate has a top thickness end face and a bottom thickness end face;
[0012] The connecting portion includes a through slot disposed on the middle plate, and the through slot extends from the top thickness end surface to the bottom thickness end surface.
[0013] Optionally, the connecting portion includes a plurality of through grooves, and the through grooves are sequentially spaced apart along the length direction of the middle plate.
[0014] Optionally, the middle plate is provided with a plurality of weight-reducing grooves, and the weight-reducing grooves extend from the top thickness end surface to the bottom thickness end surface.
[0015] Optionally, insulating sheets are respectively attached to the surfaces of both sides of the middle plate, and the battery cells on both sides of the middle plate are attached to the corresponding insulating sheets.
[0016] Optionally, in each of the battery cells in the long battery module, two adjacent ones are fixed by colloid bonding.
[0017] Optionally, the battery cells in each of the gaps are arranged in two rows, the two rows of battery cells are equal in length and the two rows of battery cells are opposite to each other, and the thickness end surfaces of the two opposite battery cells are in contact with each other.
[0018] Optionally, a lifting fitting hole is provided on the end plate.
[0019] Optionally, the long battery module includes a steel belt, which is sleeved on the middle plate, the two end plates and the outside of each battery cell.
[0020] The second object of the present application is to provide a battery pack, comprising:
[0021] a housing having a cavity;
[0022] A long battery module is arranged in the cavity, and the end plate of the long battery module is fixed to the shell, and the middle plate of the long battery module is connected to the shell through a connecting part.
[0023] By adopting the above technical solution, the utility model has the following beneficial effects:
[0024] The long battery module of the present application can fix a large number of battery cells. A middle plate is arranged in the middle of each arranged battery cell. The middle plate and two end plates can be fixed to the outer shell of the battery pack, thereby strengthening the overall assembly structural strength of the battery module and ensuring the overall structural stability of the battery module. The long battery module of the present application can change multiple modules into one module, reduce the types of materials of the module, reduce the size of the product, and reduce the cost of the module.
[0025] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:
[0027] Figure 1 An exploded view of a long battery module provided in an embodiment of the present application;
[0028] Figure 2 A schematic diagram of the structure of the middle plate of the long battery module provided in the embodiment of the present application;
[0029] Figure 3 A schematic diagram of the three-dimensional structure of a long battery module provided in an embodiment of the present application.
[0030] In the figure, 1. end plate; 11. lifting matching hole; 2. middle plate; 21. through groove; 22. weight reduction groove; 3. battery cell; 4. insulating sheet; 5. steel belt.
[0031] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.
[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] See also Figures 1 to 3 As shown, the embodiment of the present application provides a long battery module, including: a battery cell 3, a middle plate 2 and two end plates 1. The two end plates 1 are arranged at intervals, the middle plate 2 is located between the two end plates 1, a gap is formed between the middle plate 2 and two adjacent ones of the end plates 1, and each battery cell 3 is arranged in each gap, wherein a connection portion for connection and fixing is provided on the middle plate 2.
[0036] The long battery module provided in the embodiment of the present application can fix more battery cells 3 than the battery module with only two end plates 1. The long battery module provided in the embodiment of the present application is provided with a middle plate 2 at the middle position of each arranged battery cell 3, and the middle plate 2 and the two end plates 1 can be fixed on the outer shell of the battery pack, thereby strengthening the overall assembly structural strength of the battery module and ensuring the overall structural stability of the battery module.
[0037] The length of the long battery module can be adjusted according to the battery pack and production line equipment, and the length can reach 2 meters. The long battery module of the present application can change multiple modules into one module, reduce the types of module materials, reduce the size of the product, and reduce the cost of the module.
[0038] In some possible implementations, see Figure 2 As shown, the middle plate 2 has a top thickness end surface and a bottom thickness end surface, and the connecting portion includes a through groove 21 arranged on the middle plate 2, and the through groove 21 extends from the top thickness end surface to the bottom thickness end surface.
[0039] In this embodiment, the bottom thickness end surface of the middle plate 2 is attached to the bottom wall of the outer shell. The connecting portion can be a through slot 21, which facilitates one end of the fastener to pass through the through slot 21 and connect to the outer shell of the battery pack, and the other end of the fastener is limited to the top thickness end surface of the middle plate 2. It should be noted that the structure of the end plate 1 is similar to that of the middle plate 2, and is also fixed to the outer shell by fasteners. Each battery cell 3 in the same column is fixed by three plates, which significantly enhances the stability of the assembly structure and facilitates the stable arrangement of more battery cells 3 between the two end plates 1.
[0040] In some possible implementation schemes, the connecting portion includes a plurality of through slots 21 , and the through slots 21 are sequentially spaced apart along the length direction of the middle plate 2 .
[0041] In this embodiment, the through grooves 21 are sequentially arranged along the width direction of the battery module, which can facilitate fixing the middle plate 2 at different positions and fasten the middle plate 2 and the outer shell of the battery pack together.
[0042] In some possible implementation schemes, the middle plate 2 is provided with a plurality of weight-reducing grooves 22 , and the weight-reducing grooves 22 extend from the top thickness end surface to the bottom thickness end surface.
[0043] The middle plate 2 may be a sheet metal structure, and the weight of the middle plate 2 can be reduced by providing the weight-reducing grooves 22, thereby reducing the weight of the module. A plurality of weight-reducing grooves 22 may also be provided on the end plate 1.
[0044] In some possible implementation schemes, insulating sheets 4 are respectively attached to the two side surfaces of the middle plate 2 , and the battery cells 3 on the two sides of the middle plate 2 are attached to the corresponding insulating sheets 4 .
[0045] The middle plate 2 is made of metal material, and can play the role of insulation protection by directly attaching insulating sheets 4 on both sides. Similarly, insulating plates can also be arranged inside the two end plates 1.
[0046] In some possible implementations, in each of the battery cells 3 in the long battery module, two adjacent ones are fixed by colloid bonding. The battery cells 3 in each of the gaps are arranged in two rows, the two rows of battery cells 3 are equal in length and the two rows of battery cells 3 are opposite to each other, and the thickness end faces of the two opposite battery cells 3 are in contact with each other. The battery pack of the present application does not adopt an air cooling mode, and there is no need to set a cooling air duct between the two rows of battery cells 3, thereby saving space. A water cooling plate can be set in the battery pack, and each battery cell 3 is directly attached to the water cooling plate.
[0047] In some possible implementation schemes, a lifting fitting hole 11 is provided on the end plate 1 to facilitate the use of lifting equipment to be hung on the lifting fitting hole 11 to lift the battery module.
[0048] In some possible embodiments, the long battery module includes a steel belt 5, which is sleeved on the outside of the middle plate 2, the two end plates 1 and each battery cell 3 to fix each battery cell, the middle plate 2 and the two end plates 1 into an integrated structure.
[0049] The second object of the present application is to provide a battery pack, comprising: a shell and a long battery module. The shell has a cavity, the long battery module is arranged in the cavity, and the end plate 1 of the long battery module is fixed to the shell, and the middle plate 2 of the long battery module is connected to the shell through a connecting portion. The connecting portion can be a through groove 21, which facilitates one end of the fastener to pass through the through groove 21 and connect to the shell of the battery pack, and the other end of the fastener is limited to the top thickness end surface of the middle plate 2. The fastener can be a bolt.
[0050] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.
Claims
1. A long battery module, characterized in that: include: Two end plates, the two end plates are spaced apart; A middle plate, the middle plate being located between the two end plates, and a gap being formed between the middle plate and two adjacent ones of the end plates; A plurality of battery cells, each of the battery cells being disposed in each of the gaps; Wherein, a connecting portion for connecting and fixing is provided on the middle plate.
2. The long battery module according to claim 1, characterized in that: The middle plate has a top thickness end face and a bottom thickness end face; The connecting portion includes a through slot disposed on the middle plate, and the through slot extends from the top thickness end surface to the bottom thickness end surface.
3. The long battery module according to claim 2, characterized in that: The connecting portion includes a plurality of through slots, and the through slots are sequentially spaced apart along the length direction of the middle plate.
4. The long battery module according to claim 2, characterized in that: The middle plate is provided with a plurality of weight-reducing grooves, and the weight-reducing grooves extend from the top thickness end surface to the bottom thickness end surface.
5. The long battery module according to claim 1, characterized in that: Insulating sheets are respectively attached to the surfaces of both sides of the middle plate, and the battery cells on both sides of the middle plate are attached to the corresponding insulating sheets.
6. The long battery module according to claim 1, characterized in that: In each of the battery cells, two adjacent ones are fixed by colloid bonding.
7. The long battery module according to claim 1, characterized in that: The battery cells in each of the gaps are arranged in two rows, the two rows of battery cells are equal in length and the two rows of battery cells are opposite to each other, and the thickness end surfaces of the two opposite battery cells are in contact with each other.
8. The long battery module according to claim 1, characterized in that: The end plate is provided with a hoisting fitting hole.
9. The long battery module according to claim 1, characterized in that: It comprises a steel belt, and the steel belt is sleeved on the middle plate, the two end plates and the outside of each battery core.
10. A battery pack, characterized in that: include: a housing having a cavity; The long battery module as described in any one of claims 1-9, wherein the long battery module is arranged in the cavity, and the end plates of the long battery module are fixed to the outer shell, and the middle plate of the long battery module is connected to the outer shell through a connecting portion.