Splicing type battery module

Abstract

According to the splicing type battery module provided by the utility model, the insulating sheet which fixes the aluminum bar sheet through the plastic rivet in advance is adhered above the battery module formed by the upper and lower wire harness isolation plates and the middle battery cell group, and the splicing hole sites are arranged at the edges of the wire harness isolation plates, so that the free splicing combination of the battery module is realized; according to the battery module disclosed by the utility model, the aluminum bar sheets are fixed on the insulation sheets through the plastic rivets, and then the insulation sheets are correspondingly attached to the wire harness isolation plates, so that series-parallel connection of the battery cells is realized, and the problem that the whole battery module is scrapped due to welding dislocation of the aluminum bar sheets can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a spliced battery module. Background Art

[0002] With the continuous innovation and progress of battery technology, the battery module market shows an increasingly prosperous trend. Subsequently, the types of battery modules are increasing continuously to meet the needs of different products and applications. In this case, the fixing plates for installing battery cells are becoming more and more diverse.

[0003] At present, the wire harness isolation plates of each battery module are customized and cannot be used interchangeably with other modules, which brings certain production costs and manufacturing challenges. Especially when facing modules with small demand, the cost of developing new molds is relatively high, which limits the economy of small-batch production.

[0004] Therefore, how to solve this problem to improve production efficiency will be one of the important challenges that the battery module industry needs to face and solve. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: to provide a spliced battery module that can meet the requirements of different modules and solve the problem of frequent mold opening.

[0006] To solve the above technical problem, the technical solution adopted by the utility model is:

[0007] A spliced battery module includes a wire harness isolation plate, an insulating sheet, and a battery cell group composed of a plurality of battery cells;

[0008] The wire harness isolation plate is composed of two upper and lower plates, and the battery cell group is fixed in the middle to form a battery module;

[0009] On one side of the insulating sheet close to the wire harness isolation plate, aluminum bus bars of a plurality of battery cells used for connecting the battery cell group in series and / or in parallel are fixed by plastic rivets, and then the insulating sheet is correspondingly pasted on the sides of the two upper and lower wire harness isolation plates away from the battery cell group;

[0010] Splicing holes are arranged at the edges of the wire harness isolation plate, and a plurality of the battery modules are spliced into a group through the splicing holes.

[0011] Further, a plurality of screw holes for long screws to pass through are arranged at the positions on the two upper and lower wire harness isolation plates where the battery cells are avoided;

[0012] The two upper and lower wire harness isolation plates fix the battery cell group in the middle through long screws to form a battery module.

[0013] Further, hoisting holes are arranged at the positions of the insulating sheet corresponding to the screw holes.

[0014] Furthermore, a hoisting sheet metal for the long screw to pass through is provided at the hoisting hole.

[0015] Furthermore, the hoisting sheet metal is of an L-shaped structure, and a slot for hoisting is provided in the upper part of the L-shape.

[0016] Furthermore, corresponding limiting holes are provided in the upper and lower wire harness isolation plates;

[0017] Both ends of multiple battery cells are respectively fixed into the battery module by inserting into the corresponding limiting holes provided in the upper and lower wire harness isolation plates and then using the long screw locked by the screw holes of the upper and lower wire harness isolation plates.

[0018] Furthermore, the screw holes are evenly spaced along the length direction of the battery module in the middle of the wire harness isolation plate;

[0019] The number of the screw holes is at least three.

[0020] Furthermore, a plurality of wire routing buckles staggered with the screw holes are evenly spaced along the length direction of the battery module on one side of the middle of the wire harness isolation plate close to the aluminum busbar for limiting the wire harness led out from the battery module.

[0021] Furthermore, splicing hole positions are provided on both the long side and the short side of the wire harness isolation plate;

[0022] Multiple battery modules are spliced on the long side and / or the short side through the splicing hole positions.

[0023] Furthermore, a splicing fixing plate connecting piece is further included;

[0024] The splicing hole positions of multiple battery modules for long-side splicing and / or short-side splicing are connected by screw locking through the splicing fixing plate connecting piece.

[0025] The beneficial effects of the present utility model are as follows: A spliced battery module is provided, which is composed of upper and lower wire harness isolation plates and a middle battery cell group. An insulating sheet with an aluminum busbar pre-fixed by plastic rivets is pasted above the battery module, and splicing hole positions are provided at the edge of the wire harness isolation plate, so as to realize the free splicing combination of the battery modules to meet the requirements of various modules, effectively solving the problem of frequent mold opening of the wire harness isolation plate. Among them, the aluminum busbar realizes the series-parallel connection of the battery cells by first fixing the aluminum busbar on the insulating sheet through plastic rivets and then corresponding the insulating sheet to fit the wire harness isolation plate, which can effectively solve the problem that the entire battery module is scrapped due to the welding misalignment of the aluminum busbar. Description of the Drawings

[0026] Figure 1Exploded view of the structure of a spliced battery module according to an embodiment of the present utility model;

[0027] Figure 2 Schematic diagram of splicing multiple battery modules in a spliced battery module according to an embodiment of the present utility model;

[0028] Figure 3 Top view of the battery module after removing the insulating sheet in a spliced battery module according to an embodiment of the present utility model;

[0029] Figure 4 Lifting schematic diagram of a spliced battery module according to an embodiment of the present utility model.

[0030] Label description:

[0031] 1. Battery cell group; 2. Wiring harness isolation board; 20. Limit hole; 21. Screw hole position; 22. Wiring clip; 3. Aluminum busbar; 31. Plastic rivet; 4. Insulating sheet; 41. Lifting hole; 42. Lifting sheet metal; 421. Slotted; 5. Long screw; 6. Wiring harness; 7. Lifting tool; 8. Splicing fixing plate connecting piece; 81. Splicing hole position; 9. Output terminal seat. Specific implementation mode

[0032] To describe in detail the technical content, achieved purpose and effect of the present utility model, the following is described in conjunction with the implementation mode and with reference to the drawings.

[0033] Please refer to Figures 1 to 4 , a spliced battery module, including a wiring harness isolation board, an insulating sheet and a battery cell group composed of multiple battery cells;

[0034] The wiring harness isolation board is composed of two upper and lower parts, and the battery cell group is fixed in the middle to form a battery module;

[0035] On the side of the insulating sheet close to the wiring harness isolation board, multiple aluminum busbars for connecting in series and / or in parallel the battery cells of the battery cell group are fixed by plastic rivets, and then the insulating sheet is correspondingly pasted on the sides of the two upper and lower wiring harness isolation boards far from the battery cell group;

[0036] Splicing hole positions are arranged at the edges of the wiring harness isolation board, and multiple battery modules are spliced into a group through the splicing hole positions.

[0037] As can be seen from the above description, the beneficial effects of the present utility model are as follows: It is composed of upper and lower wire harness isolation plates and a middle battery cell group. An insulating sheet with aluminum busbars pre-fixed by plastic rivets is pasted above the battery module, and splicing holes are arranged at the edges of the wire harness isolation plates, so as to realize the free splicing and combination of the battery modules to meet the requirements of various modules, effectively solving the problem of frequent mold opening of the wire harness isolation plates. Among them, the aluminum busbars are connected in series and parallel to the battery cells by first fixing them on the insulating sheet through plastic rivets and then corresponding to the wire harness isolation plates by the insulating sheet, which can effectively solve the problem of the entire battery module being scrapped due to the welding misalignment of the aluminum busbars.

[0038] Further, a plurality of screw holes for the long screw to pass through are opened at the positions of the upper and lower wire harness isolation plates where the battery cells are avoided.

[0039] The upper and lower wire harness isolation plates fix the battery cell group in the middle through long screws to form a battery module.

[0040] As can be seen from the above description, the upper and lower wire harness isolation plates and the middle battery cell group are locked and fixed together by long screws to ensure that the battery cells are firmly fixed between the upper and lower wire harness isolation plates, so as to ensure the overall stability of the obtained battery module.

[0041] Further, hoisting holes are opened at the positions of the insulating sheet corresponding to the screw holes.

[0042] As can be seen from the above description, the hoisting holes can facilitate the handling of the entire battery module by hoisting.

[0043] Further, a hoisting sheet metal for the long screw to pass through is arranged at the hoisting hole.

[0044] As can be seen from the above description, adding a hoisting sheet metal at the hoisting hole can be used as a gasket for locking the long screw, which can facilitate the load-bearing and stability during the hoisting process.

[0045] Further, the hoisting sheet metal is of an L-shaped structure, and a slot for hoisting is opened at the upper part of the L-shape.

[0046] As can be seen from the above description, since the hoisting tool is generally a hook, opening a slot at the upper part of the L-shaped hoisting sheet metal can further facilitate the hoisting of the hoisting tool during the hoisting process, that is, the hoisting tool can hoist and carry the battery module by clamping the hook into the slot, avoiding the falling off of the battery module during the hoisting process.

[0047] Further, corresponding limit holes are opened on the upper and lower wire harness isolation plates.

[0048] Both ends of multiple battery cells are respectively fixed into the battery module by inserting into the corresponding limiting holes opened on the upper and lower wire harness isolation plates, and then fixing with long screws through the screw holes of the upper and lower wire harness isolation plates.

[0049] As can be seen from the above description, the upper and lower wire harness isolation plates are provided with limiting holes to effectively fix the battery cells and prevent the battery cells of the battery module from being damaged by collision during handling.

[0050] Further, the screw holes are evenly spaced along the length direction of the battery module and opened in the middle of the wire harness isolation plate;

[0051] The number of the screw holes is at least three.

[0052] As can be seen from the above description, the screw holes for locking the long screws are arranged in a row along the length direction of the battery module, and the number thereof is limited to at least three, which ensures the firmness and stability of the battery module group while ensuring uniform stress on the battery module, and further avoids damage caused by collision during handling.

[0053] Further, a plurality of wire routing buckles staggered with the screw holes are evenly spaced along the length direction of the battery module on one side of the middle of the wire harness isolation plate close to the aluminum busbar for limiting the wire harness led out from the battery module.

[0054] As can be seen from the above description, wire routing buckles are opened in the intervals of the screw holes for locking the long screws on the wire harness isolation plate at the same time, which can limit the wire harness led out from the battery module, prevent the movement of the wire harness, and prevent the wire harness from being damaged by the welding head during subsequent laser welding processing of the aluminum busbar.

[0055] Further, the long side and the short side of the wire harness isolation plate are both provided with the splicing holes;

[0056] A plurality of the battery modules are spliced on the long side and / or the short side through the splicing holes.

[0057] Further, it further includes a splicing fixing plate connecting piece;

[0058] The splicing holes of a plurality of the battery modules for long side splicing and / or short side splicing are connected by screw locking through the splicing fixing plate connecting piece.

[0059] As can be seen from the above description, the splicing holes are provided on both the long side and the short side of the wire harness isolation plate, and a splicing fixing plate connecting piece is added to realize the splicing of multiple battery modules in four directions, further meeting the requirements of different modules while ensuring the stability of the spliced battery module.

[0060] A spliced battery module provided by the present utility model is mainly applied to energy storage scenarios under different requirements. The following is a specific description in combination with specific embodiments:

[0061] Please refer to Figures 1 to 3 , the first embodiment of the present utility model is:

[0062] A spliced battery module, as Figure 1 shown, includes a wire harness isolation plate 2, an insulating sheet 4, and a battery cell group 1 composed of multiple battery cells 1.

[0063] In this embodiment, the wire harness isolation plate 2 is composed of two upper and lower plates, and the battery cell group 1 is fixed in the middle to form a battery module. As Figure 3 shown, a plurality of screw holes 21 for the passage of long screws 5 are provided at the positions where the upper and lower wire harness isolation plates 2 avoid the battery cells, and corresponding limit holes 20 are provided on the upper and lower wire harness isolation plates 2. Again, as Figure 1 shown, the two ends of multiple battery cells are respectively fixed into a battery module by inserting into the corresponding limit holes 20 provided on the upper and lower wire harness isolation plates 2 and then locking the long screws 5 through the screw holes 21 of the upper and lower wire harness isolation plates 2. That is, the upper and lower wire harness isolation plates 2 are provided with limit holes 20 to effectively fix the battery cells and prevent the battery cells of the battery module from being damaged by collision during handling.

[0064] And again, as Figure 1 shown, one side of the insulating sheet 4 close to the wire harness isolation plate 2 is fixed with a plurality of aluminum busbars 3 for connecting in series and / or in parallel the battery cells of the battery cell group 1 through plastic rivets 31, and then correspondingly pasted on the side of the upper and lower wire harness isolation plates 2 away from the battery cell group 1.

[0065] At the same time, as Figure 2 shown, splicing holes 81 are provided at the edge of the wire harness isolation plate 2. In this embodiment, splicing holes 81 are provided on both the long side and the short side of the wire harness isolation plate 2. Multiple battery modules are spliced on the long side and / or the short side through the splicing holes 81. Multiple battery modules can be spliced into a group according to requirements through the splicing holes 81. And in this embodiment, a splicing fixing plate connecting piece 8 is further included. The splicing holes 81 of multiple battery modules for long side splicing and / or short side splicing are connected by screwing through the splicing fixing plate connecting piece 8. The spliced battery module can continue to be spliced with the output pole seat 9 through the splicing holes 81 on the side of the wire harness isolation plate 2 where the positive and negative poles are output to obtain the final battery module that meets the requirements.

[0066] That is, in this embodiment, an insulating sheet 4 with an aluminum bar 3 pre-fixed by a plastic rivet 31 is pasted above the battery module composed of an upper and lower wire harness separator 2 and a middle battery cell group 1, and splicing hole positions 81 are arranged at the edge of the wire harness separator 2, so as to realize the free splicing and combination of the battery modules to meet the requirements of various modules, effectively solving the problem of frequent mold opening of the wire harness separator 2. The aluminum bar 3 is connected in series and parallel to the battery cells by first fixing it on the insulating sheet 4 with a plastic rivet 31 and then making the insulating sheet 4 correspondingly fit the wire harness separator 2, which can effectively solve the problem that the entire battery module is scrapped due to the welding misalignment of the aluminum bar 3. Moreover, the upper and lower wire harness separators 2 and the middle battery cell group 1 are locked and fixed into one body by a long screw 5 to ensure that the battery cells are firmly fixed between the upper and lower wire harness separators 2, so as to ensure the overall stability of the obtained battery module. In addition, the splicing hole positions 81 are arranged on both the long side and the short side of the wire harness separator 2, and a splicing fixing plate connecting piece 8 is added to realize the splicing of multiple battery modules in four directions, further meeting different module requirements and ensuring the stability of the spliced battery module.

[0067] Please refer to Figure 1 and Figure 4 , Embodiment 2 of the present invention is as follows:

[0068] A spliced battery module. On the basis of the above Embodiment 1, in this embodiment, as Figure 1 or Figure 4 shown, a lifting hole 41 is opened at the position of the insulating sheet 4 corresponding to the screw hole position 21, that is, the lifting hole 41 can facilitate the handling of the entire battery module by lifting.

[0069] Meanwhile, in this embodiment, as Figure 1 or Figure 4 shown, a lifting sheet metal 42 for the long screw 5 to pass through is arranged at the lifting hole 41. The lifting sheet metal 42 is of an L-shaped structure, and a slotted opening 421 for lifting is opened at the upper part of the L shape.

[0070] That is, in this embodiment, adding the lifting sheet metal 42 at the lifting hole 41 can be used as a gasket for locking the long screw 5, which is convenient for load bearing and stability during the lifting process. And since the lifting tool 7 is generally a hook, opening the slotted opening 421 at the upper part of the L-shaped lifting sheet metal 42 can further facilitate the lifting of the lifting tool 7 during the lifting process, that is, the lifting tool 7 can realize the lifting and handling of the battery module by clamping the hook into the slotted opening 421, avoiding the detachment of the battery module during the lifting process.

[0071] Please refer to Figure 3 , Embodiment 3 of the present invention is as follows:

[0072] A spliced battery module. On the basis of the above-mentioned Embodiment 1 or Embodiment 2, in this embodiment, as Figure 3 shown, the screw holes 21 are evenly spaced along the length direction of the battery module and are opened in the middle of the wire harness isolation plate 2, and there are at least three screw holes 21.

[0073] At the same time, on one side of the middle part of the wire harness isolation plate 2 close to the aluminum bus bar 3, a number of wire routing buckles 22 staggered with the screw holes 21 are evenly spaced along the length direction of the battery module, which can be used to limit the wire harness 6 led out from the battery module.

[0074] That is, the screw holes 21 for locking the long screw 5 are opened in a row structure along the length direction of the battery module, and the number thereof is limited to at least three, which ensures the firm and stable grouping of the battery module and ensures uniform stress on the battery module, further avoiding damage caused by collision during handling. At the same time, wire routing buckles 22 are opened in the intervals of the screw holes 21 for locking the long screw 5 on the wire harness isolation plate 2, which can limit the wire harness 6 led out from the battery module, prevent the movement of the wire harness 6, and prevent the wire harness 6 from being damaged by the welding head during subsequent laser welding processing of the aluminum bus bar 3.

[0075] In summary, a spliced battery module provided by the present utility model has the following beneficial effects:

[0076] 1. Since the wire harness isolation plate can complete the splicing combination in two directions, the splicing can meet the requirements of various modules, reduce the mold opening process of the wire harness fixing plate, and effectively shorten the trial production cycle of the module sample;

[0077] 2. The aluminum bus bar realizes the series-parallel connection of the battery cells by first fixing the aluminum bus bar on the insulating sheet through plastic rivets and then corresponding the insulating sheet to fit the wire harness isolation plate, which can effectively solve the problem that the entire battery module is scrapped due to the welding misalignment of the aluminum bus bar;

[0078] 3. The lifting holes and the L-shaped lifting sheet metal effectively improve the handling efficiency and stability of the battery module;

[0079] 4. The wire routing buckles are added to limit the wire harness, prevent the movement of the wire harness, and prevent the wire harness from being damaged by the welding head during subsequent laser welding processing of the aluminum bus bar.

[0080] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A spliced ​​battery module, characterized in that: It includes a wiring harness isolation plate, an insulating sheet and a battery cell group consisting of a plurality of battery cells; The wiring harness isolation plate is composed of two upper and lower pieces, and the battery cell group is fixed in the middle to form a battery module; A plurality of aluminum sheets for connecting a plurality of cells of the cell group in series and / or in parallel are fixed on one side of the insulating sheet close to the wiring harness isolation plate by plastic rivets and then correspondingly pasted on the sides of the upper and lower wiring harness isolation plates away from the cell group; The edge of the wiring harness isolation plate is provided with splicing holes, and the plurality of battery modules are spliced ​​into groups through the splicing holes.

2. A spliced ​​battery module according to claim 1, characterized in that: A plurality of screw holes for long screws to pass through are provided at positions on the upper and lower wiring harness isolation plates to avoid the battery cells; The upper and lower wiring harness isolation plates fix the battery cell group in the middle through long screws to form a battery module.

3. A spliced ​​battery module according to claim 2, characterized in that: The insulating sheet is provided with a lifting hole at a position corresponding to the screw hole.

4. A spliced ​​battery module according to claim 3, characterized in that: The hoisting hole is provided with a hoisting sheet metal for the long screw to pass through.

5. A spliced ​​battery module according to claim 4, characterized in that: The hoisting sheet metal is an L-shaped structure, and a slot for hoisting is provided on the upper part of the L-shape.

6. A spliced ​​battery module according to claim 2, characterized in that: The upper and lower wiring harness isolation plates are provided with corresponding limiting holes; The two ends of the multiple battery cells are respectively inserted into the corresponding limiting holes opened on the upper and lower wiring harness isolation plates, and then fixed into the battery module by the long screw that is screwed through the screw holes of the upper and lower wiring harness isolation plates.

7. The spliced ​​battery module according to claim 2, characterized in that: The screw holes are evenly spaced in the middle of the wiring harness isolation plate along the length direction of the battery module; The number of screw holes is at least three.

8. The spliced ​​battery module according to claim 7, characterized in that: A plurality of wiring buckles staggered with the screw holes are evenly spaced along the length direction of the battery module on one side of the middle portion of the wiring harness isolation plate close to the aluminum bar, and are used to limit the wiring harness led out of the battery module.

9. The spliced ​​battery module according to claim 1, characterized in that: The long side and the short side of the wiring harness isolation plate are both provided with the splicing holes; The plurality of battery modules are spliced ​​on long sides and / or short sides through the splicing holes.

10. A spliced ​​battery module according to claim 9, characterized in that: Also included are splicing fixing plate connecting pieces; The splicing holes of the plurality of battery modules that are spliced ​​on the long sides and / or the short sides are connected by screw locking through the splicing fixing plate connecting pieces.

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