Highly integrated CCS lithium battery module structure

Abstract

The utility model relates to the technical field of battery modules, and discloses a highly integrated CCS lithium battery module structure which comprises a battery cell group, the battery cell group is fixed through module end plates and module side plates, and the module end plates are fixedly connected with the adjacent module side plates through corresponding connecting bolts. The battery cell group is formed by arranging a plurality of battery cells along the axial direction, the plurality of battery cells are spaced through CR foam, CR foam is also arranged between the battery cell group and the module end plate, and through the arranged CCS integrated busbar, the phenomenon of welding slag splashing in the welding process can be reduced, the production efficiency is improved, the working hours are reduced, and the production cost is reduced. Meanwhile, by arranging the CR foam, the side insulating film and other structures, the battery cell output aluminum row can be insulated from a metal plate, short circuit caused by accidental falling of metal is prevented, the battery cells are buffered, expansion of the battery cells caused by collision is reduced, the overall structure is simple and reliable, disorder of wiring harnesses is avoided, and the tidiness and attractiveness of the overall appearance are improved.

Description

Technical Field

[0001] This utility model patent relates to the field of battery module technology, and specifically, to a highly integrated CCS lithium battery module structure. Background Art

[0002] The battery module is usually composed of multiple single cells connected in series / parallel and placed between the cover plate and the bottom plate. Side plates and end plates are provided around the multiple single cells, and the bottom plate, side plates, end plates and cover plate are fixed with bolts.

[0003] Traditional battery modules are welded to battery poles using wiring harnesses. This method of collecting battery signals is very cumbersome during the production process and is prone to causing welding slag splashing. This collection method requires manual welding and has a low degree of automation. Utility Model Content

[0004] The utility model aims to provide a highly integrated CCS lithium battery module structure, aiming to solve the problem of conflict between the positions of the support beam and the main column in the prior art.

[0005] The utility model is implemented as follows: a highly integrated CCS lithium battery module structure includes a cell group, the cell group is fixed by a module end plate and a module side plate, the module end plate and the adjacent module side plate are connected and fixed by corresponding connecting bolts, the cell group is composed of a plurality of cells arranged along the axial direction, the plurality of cells are spaced by CR foam, CR foam is also provided between the cell group and the module end plate, a side insulating film is provided between the cell group and the module side plate, and a CCS integrated busbar is provided on the top of the cell group.

[0006] Preferably, the CCS integrated busbar is fixed to the battery cell group by laser welding.

[0007] Preferably, the CCS integrated busbar is composed of an upper insulating film, a battery information collection FPBC, an aluminum busbar and a lower insulating film.

[0008] Preferably, positive and negative output aluminum bars are formed at the left and right ends of the aluminum bar, and the positive and negative output aluminum bars are respectively welded to the positive and negative electrodes of the battery cell group by laser.

[0009] Preferably, the positive and negative output aluminum bars are fixed and protected by an insulating plastic base and an insulating plastic upper cover.

[0010] Preferably, the two insulating plastic bases are fixed to the two module end plates respectively by bolts, and the top of the module end plate is provided with through holes for fixing the insulating plastic base by bolts.

[0011] Preferably, a PC insulating upper cover is buckled on the top of the battery cell group, and a CCS integrated busbar is arranged between the battery cell group and the PC insulating upper cover.

[0012] Preferably, a positive and negative electrode identification groove is provided on the top of the PC insulating upper cover.

[0013] Preferably, two symmetrical connecting holes are provided on the two module end plates, screws are arranged in the connecting holes, and the two module end plates are fixed to the PACK bottom shell by screws.

[0014] Preferably, a connection port is provided at one end of the battery information acquisition FPBC, and a notch groove matching the size of the connection port is provided on the PC insulating upper cover, the upper insulating film and the lower insulating film.

[0015] Compared with the prior art, the utility model provides a highly integrated CCS lithium battery module structure. The CCS integrated busbar is provided to reduce the phenomenon of welding slag splashing during welding, improve production efficiency, and reduce working hours. At the same time, the CR foam and side insulation film and other structures are provided to insulate the battery cell output aluminum busbar from the sheet metal to prevent short circuits caused by accidental metal falling, and to buffer the battery cells, reducing the expansion of the battery cells caused by collision. The overall structure is simple and reliable, avoids cluttered wiring harnesses, and improves the neatness and beauty of the overall appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the exploded structure of a highly integrated CCS lithium battery module structure provided by the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of a highly integrated CCS lithium battery module structure provided by the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] Reference Figure 1-2 As shown, it is a preferred embodiment provided by the utility model.

[0022] A highly integrated CCS lithium battery module structure includes a cell group 6, which is fixed by a module end plate 8 and a module side plate 10. The module end plate 8 and the adjacent module side plate 10 are connected and fixed by corresponding connecting bolts. The cell group 6 is composed of a plurality of cells arranged along the axial direction, and the plurality of cells are spaced by CR foam 7. CR foam 7 is also provided between the cell group 6 and the module end plate 8. A side insulating film 9 is provided between the cell group 6 and the module side plate 10. A CCS integrated busbar is provided on the top of the cell group 6.

[0023] The CCS integrated busbar can reduce the phenomenon of welding slag splashing during the welding process, improve production efficiency and reduce working hours. At the same time, the CR foam 7 and the side insulating film 9 and other structures can insulate the battery cell output aluminum bus 5 from the sheet metal to prevent short circuits caused by accidental metal falling, and provide buffers between battery cells to reduce expansion of the battery cells caused by collision. The overall structure is simple and reliable, avoids cluttered wiring harnesses, and improves the neatness and beauty of the overall appearance.

[0024] Specifically, in this embodiment, the CCS integrated busbar is fixed on the battery cell group 6 by laser welding.

[0025] Since the CCS integrated busbar is welded to the battery cell group 6 by laser welding, the phenomenon of welding slag splashing can be reduced and the production efficiency can be improved.

[0026] Specifically, in this embodiment, the CCS integrated busbar is composed of an upper insulating film 2 , a battery information collection FPBC 3 , an aluminum busbar 5 and a lower insulating film 4 .

[0027] By providing the upper insulating film 2 and the lower insulating film 4 , the aluminum bar 5 can be further prevented from contacting with the sheet metal, thereby insulating the aluminum bar 5 and preventing a short circuit caused by metal contact.

[0028] Specifically, in this embodiment, positive and negative output aluminum bars 5 are formed at the left and right ends of the aluminum bar 5 , and the positive and negative output aluminum bars 5 are respectively welded to the positive and negative electrodes of the battery cell group 6 by laser welding.

[0029] Specifically, in this embodiment, the positive and negative output aluminum bars 5 are fixed and protected by the insulating plastic base 12 and the insulating plastic upper cover 11 .

[0030] The insulating plastic upper cover 11 and the insulating plastic base 12 can fix the positive and negative output aluminum bars 5 and simultaneously provide insulation protection for the positive and negative output aluminum bars 5 .

[0031] Specifically, in this embodiment, the two insulating plastic bases 12 are fixed to the two module end plates 8 respectively by bolts, and the top of the module end plate 8 is provided with through holes for fixing the insulating plastic bases 12 by bolts.

[0032] By fixing the insulating plastic base 12 and the module end plate 8 by bolts, the connection stability of the insulating plastic can be ensured, and the fixing and protection capabilities of the positive and negative output aluminum bars 5 can be improved.

[0033] Specifically, in this embodiment, the top of the battery cell group 6 is buckled with a PC insulating cover 1 , the CCS integrated busbar is arranged between the battery cell group 6 and the PC insulating cover 1 , and a positive and negative electrode identification slot 14 is opened on the top of the PC insulating cover 1 .

[0034] The PC insulating upper cover 1 can insulate and protect the battery cell group 6 and the aluminum bus 5, and mark the positive and negative poles of the battery module, so that the user can quickly identify the positive and negative poles of the battery module.

[0035] Specifically, in this embodiment, two symmetrical connection holes are provided on the two module end plates 8 , screws 13 are provided in the connection holes, and the two module end plates 8 are fixed to the PACK bottom shell by the screws 13 .

[0036] The provided connection holes and screws 13 can facilitate quick connection of the battery module and the PACK bottom shell, thereby improving the convenience of installing the battery module.

[0037] Specifically, in this embodiment, a connection port is provided at one end of the battery information collection FPBC3, and a notch groove matching the size of the connection port is provided on the PC insulating upper cover 1, the upper insulating film 2 and the lower insulating film 4.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly integrated CCS lithium battery module structure, characterized in that: It includes a cell group, which is fixed by a module end plate and a module side plate, the module end plate and the adjacent module side plate are connected and fixed by corresponding connecting bolts, the cell group is composed of a plurality of cells arranged along the axial direction, the plurality of cells are spaced by CR foam, CR foam is also provided between the cell group and the module end plate, a side insulating film is provided between the cell group and the module side plate, and a CCS integrated busbar is provided on the top of the cell group.

2. A highly integrated CCS lithium battery module structure as claimed in claim 1, characterized in that: The CCS integrated busbar is fixed on the battery cell group by laser welding.

3. A highly integrated CCS lithium battery module structure as claimed in claim 1, characterized in that: The CCS integrated busbar is composed of an upper insulating film, a battery information collection FPBC, an aluminum busbar and a lower insulating film.

4. A highly integrated CCS lithium battery module structure as claimed in claim 3, characterized in that: The left and right ends of the aluminum bar are formed with positive and negative output aluminum bars, which are respectively welded to the positive and negative electrodes of the battery cell group by laser.

5. A highly integrated CCS lithium battery module structure as claimed in claim 4, characterized in that: The positive and negative output aluminum bars are fixed and protected by an insulating plastic base and an insulating plastic upper cover.

6. A highly integrated CCS lithium battery module structure as claimed in claim 5, characterized in that: The two insulating plastic bases are fixed to the two module end plates respectively by bolts, and the top of the module end plate is provided with through holes for fixing the insulating plastic base by bolts.

7. A highly integrated CCS lithium battery module structure as claimed in claim 1, characterized in that: The top of the battery cell group is buckled with a PC insulating upper cover, and the CCS integrated busbar is arranged between the battery cell group and the PC insulating upper cover.

8. A highly integrated CCS lithium battery module structure as claimed in claim 7, characterized in that: A positive and negative electrode identification slot is provided on the top of the PC insulating upper cover.

9. A highly integrated CCS lithium battery module structure as claimed in claim 1, characterized in that: The two module end plates are provided with two mutually symmetrical connection holes, screws are arranged in the connection holes, and the two module end plates are fixed to the PACK bottom shell by screws.

10. A highly integrated CCS lithium battery module structure as claimed in claim 4, characterized in that: One end of the battery information acquisition FPBC is provided with a connection port, and the PC insulating upper cover, the upper insulating film and the lower insulating film are all provided with a notch groove matching the size of the connection port.

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