A fixing device for a soft pack battery module bracket

Abstract

The utility model discloses a fixing device for a soft-pack battery module bracket, comprising a workbench, on which a soft-pack battery module is placed, the soft-pack battery module comprising a battery cell group, and plastic brackets are respectively arranged on the front and rear sides of the battery cell group, and two locking components are arranged on the workbench, the two locking components are distributed on the front and rear sides of the soft-pack battery module, and the locking components are used to lock the plastic brackets located on the same side; the utility model has the advantages of helping to reduce production costs, improving welding yields, and contributing to the development of high energy density battery modules.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, and in particular relates to a fixing device for a soft-pack battery module bracket. Background Art

[0002] Soft-pack battery modules have been widely used in various fields such as new energy vehicles and electronic equipment due to their advantages of high energy density, high safety and long life. The existing soft-pack battery module includes multiple soft-pack battery cells, plastic brackets, busbars, end plates and sampling FPCs. Multiple soft-pack battery cells are stacked into groups. The plastic brackets are distributed on the front and back sides of the battery cell group. The busbars are fixed on the plastic brackets. The pole tabs of the soft-pack battery cells pass through the plastic brackets and are laser welded to the busbars. The sampling FPC is set on the plastic bracket and connected to the pole tabs. The end plates are distributed on the left and right sides of the battery cell group.

[0003] In the manufacturing process of soft-pack battery modules, welding the tabs and busbars is a key step, which is directly related to the electrical connection and overall performance of the soft-pack battery module. The busbar is set on a plastic bracket, and the plastic bracket needs to provide sufficient support during the welding process to ensure accurate connection between the tabs and the busbar to avoid welding defects. For this reason, the volume of the plastic bracket is generally designed to be larger, which not only increases the production cost, but also makes it difficult to ensure a high welding yield. In addition, the larger volume of the plastic bracket is not conducive to the development of high energy density battery modules. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fixing device for a soft-pack battery module bracket, which helps to reduce production costs, improve welding yield, and contribute to the development of high-energy density battery modules.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a fixing device for a soft-pack battery module bracket, comprising a workbench, on which a soft-pack battery module is placed, the soft-pack battery module comprises a battery cell group, and plastic brackets are respectively arranged on the front and rear sides of the battery cell group, and two locking assemblies are arranged on the workbench, and the two locking assemblies are distributed on the front and rear sides of the soft-pack battery module, and the locking assemblies are used to lock the plastic brackets located on the same side.

[0006] Preferably, the locking assembly includes two support rods, a plurality of lower support blocks, a cross beam and a plurality of upper support blocks, the support rods and the plurality of lower support blocks are respectively fixedly arranged on the workbench, the plurality of lower support blocks are located between the two support rods, the lower support blocks are used to abut against the lower end surface of the plastic bracket, the cross beam is detachably arranged on the upper ends of the two support rods, the plurality of upper support blocks are fixedly arranged on the lower end surface of the cross beam, and the upper support blocks are used to abut against the upper end surface of the plastic bracket.

[0007] Preferably, the plurality of upper support blocks correspond one-to-one to the plurality of lower support blocks, and the upper support blocks are located directly above the corresponding lower support blocks.

[0008] Preferably, a first card slot is provided at the upper end of the lower support block, the first card slot runs through the left and right sides of the lower support block, a first card strip is fixedly provided at the lower end of the plastic bracket, and the first card strip is snap-fitted with the first card slot; a second card slot is provided at the lower end of the upper support block, the second card slot runs through the left and right sides of the upper support block, a second card strip is fixedly provided at the upper end of the plastic bracket, and the second card strip is snap-fitted with the second card slot.

[0009] Preferably, two mounting seats are provided at the upper end of the crossbeam, a locking hook is provided on the side of the mounting seat away from the soft-pack battery module, and two latches are provided at the lower end of the crossbeam; a slot is provided at the upper end of the support rod, the slot corresponds to the latch one-to-one and is plugged in with the latch, and a lock is provided on the side of the support rod away from the soft-pack battery module, the lock corresponds to the locking hook one-to-one and is connected.

[0010] Preferably, two countersunk holes are provided on the upper end surface of the beam, and a first screw hole is provided on the upper end of the pin. The first bolt passes through the countersunk hole and is threadedly connected to the first screw hole. The mounting seat corresponds to the countersunk hole one by one, and the mounting seat is fixedly arranged on the beam and covers the corresponding countersunk hole.

[0011] Preferably, a first positioning pin is fixedly provided on the upper end of the support rod, and two first positioning holes are provided on the crossbeam, and the first positioning holes correspond to the first positioning pins one by one and are plug-fitted.

[0012] Preferably, a connecting plate extending in the up-down direction is provided on the side of the lower support block away from the soft-pack battery module, and a positioning block extending toward the direction of the soft-pack battery module is integrally provided on the upper end of the connecting plate, and the positioning block is used to abut against the soft-pack battery module.

[0013] Preferably, a mounting block and a second positioning pin are fixedly provided on the side of the lower support block away from the soft-pack battery module, the mounting block is provided with a first through hole and a second screw hole, the connecting plate is provided with a second positioning hole corresponding to the first through hole and a second through hole corresponding to the second screw hole, the second positioning pin passes through the first through hole and is plugged into the second positioning hole, and the second bolt passes through the second through hole and is threadedly connected to the second screw hole.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] 1. By setting a locking component on the workbench, the locking component is used to lock the plastic bracket on the same side to improve the stability of the plastic bracket, ensure that the plastic bracket can provide sufficient supporting force, effectively avoid welding defects during welding operations, and help improve welding yield;

[0016] 2. The supporting force is changed from being provided by the plastic bracket to being provided by the plastic bracket and the locking assembly together. The volume of the plastic bracket can be made smaller during design, which not only helps to reduce production costs, but also helps to reduce the overall volume of the soft-pack battery module, and contributes to the development of high energy density battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the locking component in the utility model;

[0019] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 4 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0021] Figure 5 It is a schematic diagram of the local structure of the utility model Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the partial explosion structure of the utility model. Figure 1 ;

[0023] Figure 7 It is a partial cross-sectional structural schematic diagram of the utility model;

[0024] Figure 8 It is a schematic diagram of the local structure of the utility model Figure 2 ;

[0025] Fig. 9This is a schematic diagram of the partial explosion structure of the utility model. Figure 2 .

[0026] In the figure: 1. workbench; 2. soft-pack battery module; 21. battery cell group; 22. plastic bracket; 221. first clip; 222. second clip; 23. sampling FPC; 3. locking assembly; 31. support rod; 311. slot; 312. lock buckle; 313. first positioning pin; 32. lower support block; 321. first slot; 322. mounting block; 3221. first through hole; 3222. second screw hole; 3223. second bolt; 323. second positioning pin; 33. crossbeam; 331. mounting seat; 332. locking hook; 333. latch; 3331. first screw hole; 334. countersunk hole; 335. first bolt; 336. first positioning hole; 34. upper support block; 341. second slot; 4. connecting plate; 41. second positioning hole; 42. second through hole; 5. positioning block. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] Embodiment 1: Figures 1 to 4 As shown, a fixing device for a soft-pack battery module bracket includes a workbench 1, on which a soft-pack battery module 2 is placed, the soft-pack battery module 2 includes a battery cell group 21, and plastic brackets 22 are respectively arranged on the front and rear sides of the battery cell group 21. Two locking components 3 are arranged on the workbench 1, and the two locking components 3 are distributed on the front and rear sides of the soft-pack battery module 2. The locking components 3 are used to lock the plastic brackets 22 located on the same side. Conventionally, a bus bar and a sampling FPC 23 are arranged on the side of the plastic bracket 22 away from the battery cell group 21.

[0030] In this embodiment, the locking assembly 3 includes two support rods 31, a plurality of lower support blocks 32, a crossbeam 33 and a plurality of upper support blocks 34. The support rods 31 and the plurality of lower support blocks 32 are fixedly arranged on the workbench 1 respectively, and the plurality of lower support blocks 32 are located between the two support rods 31. The lower support blocks 32 are used to abut against the lower end surface of the plastic bracket 22. The crossbeam 33 is detachably arranged on the upper ends of the two support rods 31, and the plurality of upper support blocks 34 are fixedly arranged on the lower end surface of the crossbeam 33. The upper support blocks 34 are used to abut against the upper end surface of the plastic bracket 22. When the crossbeam 33 is connected to the support rod 31, the lower support blocks 32 cooperate with the upper support blocks 34 to press onto the upper and lower ends of the plastic bracket 22 to lock the plastic bracket 22.

[0031] In this embodiment, the plurality of upper support blocks 34 correspond to the plurality of lower support blocks 32 one by one, and the upper support blocks 34 are located directly above the corresponding lower support blocks 32 to provide a stable locking effect.

[0032] Embodiment 2: Figures 3 to 7 As shown, the rest of the parts are the same as those in the first embodiment, except that a first slot 321 is provided at the upper end of the lower support block 32, the first slot 321 runs through the left and right sides of the lower support block 32, a first clip 221 is fixedly provided at the lower end of the plastic bracket 22, and the first clip 221 is snap-fitted with the first slot 321; a second slot 341 is provided at the lower end of the upper support block 34, the second slot 341 runs through the left and right sides of the upper support block 34, a second clip 222 is fixedly provided at the upper end of the plastic bracket 22, and the second clip 222 is snap-fitted with the second slot 341. The settings of the first slot 321, the first clip 221, the second slot 341 and the second clip 222 help to improve the stability and accuracy of locking.

[0033] In this embodiment, two mounting seats 331 are provided at the upper end of the crossbeam 33, and the mounting seats 331 are away from the soft pack battery module 2 (see Figure 1 ) is provided with a lock hook 332 on one side, and two latches 333 are provided at the lower end of the crossbeam 33; a slot 311 is provided at the upper end of the support rod 31, and the slot 311 corresponds to the latches 333 one by one and plugs in and fits, and a lock buckle 312 is provided on the side of the support rod 31 away from the soft-pack battery module 2, and the lock buckle 312 corresponds to the lock hook 332 one by one and is connected. When connecting, first insert the latch 333 into the slot 311, and then connect the lock buckle 312 with the lock hook 332 to stably connect the support rod 31 and the crossbeam 33.

[0034] Embodiment 3: Figure 6 and Figure 7As shown, the rest of the parts are the same as those of the second embodiment, except that two countersunk holes 334 are provided on the upper end surface of the beam 33, and a first screw hole 3331 is provided on the upper end of the pin 333. The first bolt 335 passes through the countersunk hole 334 and is threadedly connected with the first screw hole 3331. The mounting seat 331 corresponds to the countersunk hole 334 one by one. The mounting seat 331 is fixedly arranged on the beam 33 and covers the corresponding countersunk hole 334. This structural design can prevent the first bolt 335 from loosening, ensure that the beam 33 and the pin 333 are stably connected, and have good reliability.

[0035] In this embodiment, a first positioning pin 313 is fixedly provided on the upper end of the support rod 31, and two first positioning holes 336 are provided on the cross beam 33. The first positioning holes 336 correspond one-to-one with the first positioning pins 313 and are plugged in and matched, which helps to improve the accuracy of alignment between the support rod 31 and the cross beam 33 and has better stability.

[0036] Embodiment 4: Figure 8 and Fig. 9 As shown, the rest of the parts are the same as those in the first embodiment, except that the lower support block 32 is far away from the soft pack battery module 2 (see Figure 1 ) is provided with a connecting plate 4 extending in the up-down direction on one side, and a positioning block 5 extending in the direction of the soft-pack battery module 2 is integrally provided on the upper end of the connecting plate 4, and the positioning block 5 is used to abut against the soft-pack battery module 2. Conventionally, there is a sampling FPC 23 on the side of the soft-pack battery module 2 (see Figure 2 ), the positioning block 5 is used to abut against the sampling FPC 23 to play a positioning role.

[0037] In this embodiment, a mounting block 322 and a second positioning pin 323 are fixedly provided on one side of the lower support block 32 away from the soft-pack battery module 2, a first through hole 3221 and a second screw hole 3222 are provided on the mounting block 322, a second positioning hole 41 corresponding to the first through hole 3221 and a second through hole 42 corresponding to the second screw hole 3222 are provided on the connecting plate 4, the second positioning pin 323 passes through the first through hole 3221 and is plugged into the second positioning hole 41, and the second bolt 3223 passes through the second through hole 42 and is threadedly connected with the second screw hole 3222.

[0038] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A fixing device for a soft-pack battery module bracket, comprising a workbench (1), on which a soft-pack battery module (2) is placed, wherein the soft-pack battery module (2) comprises a battery cell group (21), and plastic brackets (22) are respectively arranged on the front and rear sides of the battery cell group (21), characterized in that Two locking components (3) are arranged on the workbench (1), and the two locking components (3) are distributed on the front and rear sides of the soft-pack battery module (2), and the locking components (3) are used to lock the plastic bracket (22) located on the same side.

2. A fixing device for a soft pack battery module bracket according to claim 1, characterized in that The locking assembly (3) comprises two support rods (31), a plurality of lower support blocks (32), a crossbeam (33) and a plurality of upper support blocks (34); the support rods (31) and the plurality of lower support blocks (32) are respectively fixedly arranged on the workbench (1); the plurality of lower support blocks (32) are located between the two support rods (31); the lower support blocks (32) are used to abut against the lower end surface of the plastic bracket (22); the crossbeam (33) is detachably arranged on the upper ends of the two support rods (31); the plurality of upper support blocks (34) are fixedly arranged on the lower end surface of the crossbeam (33); and the upper support blocks (34) are used to abut against the upper end surface of the plastic bracket (22).

3. A fixing device for a soft pack battery module bracket according to claim 2, characterized in that The plurality of upper support blocks (34) correspond one-to-one to the plurality of lower support blocks (32), and the upper support blocks (34) are located directly above the corresponding lower support blocks (32).

4. A fixing device for a soft pack battery module bracket according to claim 2, characterized in that The upper end of the lower support block (32) is provided with a first card slot (321), the first card slot (321) runs through the left and right sides of the lower support block (32), and the lower end of the plastic bracket (22) is fixedly provided with a first card strip (221), the first card strip (221) is engaged with the first card slot (321); A second card slot (341) is provided at the lower end of the upper support block (34), and the second card slot (341) runs through the left and right sides of the upper support block (34). A second card strip (222) is fixedly provided at the upper end of the plastic bracket (22), and the second card strip (222) is engaged with the second card slot (341).

5. A fixing device for a soft pack battery module bracket according to claim 2, characterized in that Two mounting seats (331) are arranged at the upper end of the crossbeam (33), a locking hook (332) is arranged on a side of the mounting seat (331) away from the soft-pack battery module (2), and two latches (333) are arranged at the lower end of the crossbeam (33); The upper end of the support rod (31) is provided with a slot (311), the slot (311) corresponds one-to-one with the latch (333) and is plugged in and matched, and a lock buckle (312) is provided on the side of the support rod (31) away from the soft-pack battery module (2), and the lock buckle (312) corresponds one-to-one with the lock hook (332) and is connected.

6. A fixing device for a soft pack battery module bracket according to claim 5, characterized in that The upper end surface of the crossbeam (33) is provided with two countersunk holes (334), the upper end of the latch (333) is provided with a first screw hole (3331), the first bolt (335) passes through the countersunk holes (334) and is threadedly connected to the first screw hole (3331), the mounting seat (331) corresponds to the countersunk holes (334) one by one, and the mounting seat (331) is fixedly arranged on the crossbeam (33) and covers the corresponding countersunk holes (334).

7. A fixing device for a soft pack battery module bracket according to claim 5, characterized in that A first positioning pin (313) is fixedly provided at the upper end of the support rod (31), and two first positioning holes (336) are provided on the crossbeam (33), wherein the first positioning holes (336) correspond to the first positioning pins (313) one by one and are plug-fitted.

8. A fixing device for a soft pack battery module bracket according to claim 2, characterized in that A connecting plate (4) extending in the up-down direction is provided on a side of the lower supporting block (32) away from the soft-pack battery module (2); a positioning block (5) extending in the direction of the soft-pack battery module (2) is integrally provided at the upper end of the connecting plate (4); the positioning block (5) is used to abut against the soft-pack battery module (2).

9. A fixing device for a soft pack battery module bracket according to claim 8, characterized in that A mounting block (322) and a second positioning pin (323) are fixedly provided on one side of the lower support block (32) away from the soft-pack battery module (2); a first through hole (3221) and a second screw hole (3222) are provided on the mounting block (322); a second positioning hole (41) corresponding to the first through hole (3221) and a second through hole (42) corresponding to the second screw hole (3222) are provided on the connecting plate (4); the second positioning pin (323) passes through the first through hole (3221) and is plugged into the second positioning hole (41); and the second bolt (3223) passes through the second through hole (42) and is threadedly connected to the second screw hole (3222).

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