A first piece welding tool for a battery module

Abstract

The utility model discloses a first piece welding tool for battery module, including tray, be provided with main part and distribute two first clamping mechanisms of main part's front and back two sides on the tray, main part's front and back two sides are provided with second clamping mechanism respectively, the second clamping mechanism clamping has along the left and right direction distribution's multiple pole lug, the first clamping mechanism clamping has the busbar, the pole lug is equipped with the busbar of same side, the advantage is helpful to improve the accuracy of verification, and reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the field of battery module production technology, and in particular relates to a first-piece welding fixture for battery modules. Background Technology

[0002] In the manufacturing process of battery modules, the welding of the tabs is one of the most crucial steps. To ensure the quality and consistency of welding for mass-produced battery modules, a first-piece welding is required before formal production to verify the accuracy of the welding equipment parameter settings and avoid welding defects during mass production.

[0003] Traditionally, the first-piece welding of battery modules is verified using simple tooling. However, the structure and function of this simple tooling are relatively basic, making it impossible to fully simulate the actual welding conditions of battery modules. This can lead to deviations in the verification results and make it difficult to accurately reflect the operating status of the welding equipment. While directly using battery modules for first-piece welding verification can improve the accuracy of the verification, it consumes more battery modules, resulting in higher production costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a first-piece welding fixture for battery modules, which helps to improve the accuracy of verification and reduce production costs.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a first welding fixture for a battery module, including a tray, on which a main body and two first clamping mechanisms distributed on the front and rear sides of the main body are provided, and second clamping mechanisms are respectively provided on the front and rear sides of the main body. The second clamping mechanisms clamp a plurality of tabs distributed in the left and right direction, and the first clamping mechanisms clamp a busbar. The tabs pass through the busbar on the same side.

[0006] Preferably, the main body includes two side plates distributed front and rear, and the two side plates are connected by a plurality of connecting rods.

[0007] Preferably, the second clamping mechanism includes a plurality of clamping units distributed in the left-right direction. Each clamping unit includes a fixed bar, a movable bar, and a fastener. The fixed bar is fixedly connected to the side plate, and the movable bar is detachably connected to the side plate through the fastener. The fixed bar and the movable bar cooperate to clamp the tail of the electrode tab.

[0008] Preferably, the fastener is a bolt, the movable strip is provided with a first screw hole, the side plate is provided with a plurality of through holes corresponding one-to-one with the plurality of first screw holes, and the bolt passes through the through holes and is threadedly connected to the corresponding first screw hole.

[0009] Preferably, end plates are provided on the left and right sides of the main body, and two adjustment mechanisms, two support bars, and two limiting members are provided on the tray. The two adjustment mechanisms are symmetrically distributed from left to right, and the two support bars are distributed on the front and rear sides of the adjustment mechanisms. The main body rests on the upper surface of the support bars, and the two limiting members are distributed on the left and right sides of the main body. The two limiting members correspond one-to-one with the two adjustment mechanisms. The adjustment mechanisms are used to control the left and right movement of the limiting members, so that the two limiting members move closer to each other and abut against the end plates, or so that the two limiting members move further away from each other and separate from the end plates.

[0010] Preferably, the adjusting mechanism includes a drive motor, a rotating seat, a lead screw, a sliding seat, and a first connecting seat. The rotating seat is fixedly connected to the tray. The lead screw extends in the left-right direction and rotates with the rotating seat. The drive motor is connected to one end of the lead screw and is used to drive the lead screw to rotate. The sliding seat is provided with a second threaded hole that is threaded with the lead screw. The first connecting seat is fixedly disposed at the upper end of the sliding seat. The limiting member includes a plurality of stops fixedly disposed on the first connecting seat.

[0011] Preferably, the first clamping mechanism includes two support rods, a lower support plate, a crossbeam, and an upper support plate. The support rods are fixedly mounted on the tray. The lower support plate is located between the two support rods and is used to abut against the lower end face of the busbar. The two ends of the crossbeam correspond one-to-one with the two support rods. The end of the crossbeam is detachably connected to the corresponding support rod via a connector. The upper support plate is fixedly mounted on the lower end face of the crossbeam and is used to abut against the upper end face of the busbar.

[0012] Preferably, the first clamping mechanism further includes a sliding unit and a locking unit. The sliding unit includes a fixed seat, a guide rod, a first guide block, and a second connecting seat. The fixed seat is fixedly connected to the tray. The guide rod extends in the front-back direction and is connected to the fixed seat. The first guide block is provided with a guide hole for the guide rod to pass through. The second connecting seat is fixedly disposed on the upper end surface of the first guide block. The lower support plate is disposed on the second connecting seat. The locking unit is used to lock the second connecting seat.

[0013] Preferably, the locking unit includes a mounting base, a rotating shaft, a pawl, a torsion spring, and a ratchet rack. The mounting base is fixedly disposed at the lower end of the second connecting seat. The rotating shaft is disposed on the mounting base. The middle part of the pawl is rotatably engaged with the rotating shaft. The torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring abut against the pawl and the mounting base, respectively. The ratchet rack is disposed on the tray and extends in the front-back direction. The pawl engages with the ratchet rack.

[0014] Preferably, the tray is also provided with a guide rail extending in the front-to-back direction, and the lower end of the second connecting seat is also provided with a second guide block, which slides in conjunction with the guide rail.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] 1. By setting up a main body, a first clamping mechanism, and a second clamping mechanism, the main body is used to simulate the housing of the battery module, the first clamping mechanism is used to fix the busbar, and the second clamping mechanism is used to fix the tabs. At the same time, the tabs pass through the busbar on the same side to accurately simulate the actual welding position relationship between the tabs and the busbar in the battery module. Compared with simple tooling, it can more comprehensively simulate the welding conditions of the actual battery module and improve the accuracy of verification. Compared with directly using the battery module, it helps to reduce production costs.

[0017] 2. The second clamping mechanism can clamp multiple tabs distributed in the left and right direction to adapt to the verification requirements of battery modules of different specifications, which helps to expand the versatility of this first piece welding fixture.

[0018] 3. The electrode tabs and busbars are fixed with different clamping mechanisms so that the staff can fine-tune the position of the electrode tabs or busbars individually before welding, or replace the electrode tabs or busbars individually, to ensure that the relative positional relationship between the electrode tabs and busbars conforms to the actual welding conditions, thereby ensuring the accuracy of the verification. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main body and the second clamping mechanism in this utility model;

[0021] Figure 3 This is a structural diagram of the present invention without the main body and the second clamping mechanism. Figure 1 ;

[0022] Figure 4 for Figure 2 A magnified schematic diagram of a local structure;

[0023] Figure 5 This is a structural diagram of the present invention without the main body and the second clamping mechanism. Figure 2 ;

[0024] Figure 6 This is a partial structural schematic diagram of the present invention;

[0025] Figure 7 This is a partial structural diagram of the pawl in this utility model.

[0026] In the diagram: 1. Tray; 11. Support bar; 12. Guide rail; 2. Main body; 21. Side plate; 211. Perforation; 22. Connecting rod; 3. First clamping mechanism; 31. Support rod; 32. Lower support plate; 33. Crossbeam; 34. Upper support plate; 35. Connector; 36. Sliding unit; 361. Fixed seat; 362. Guide rod; 363. First guide block; 364. Second connecting seat; 365. Second guide block; 37. Locking unit; 371. Mounting base; 372. Rotating shaft; 373. Pawl; 374. Torsion spring; 375. Ratchet; 4. Second clamping mechanism; 41. Clamping unit; 411. Fixing bar; 412. Moving bar; 4121. First screw hole; 413. Fastener; 5. Pole lug; 6. Busbar; 7. Adjusting mechanism; 71. Rotating seat; 72. Lead screw; 73. Sliding seat; 74. First connecting seat; 8. End plate; 9. Limiting component; 91. Stop block. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Example 1: As Figures 1 to 4 As shown, a first welding fixture for a battery module includes a tray 1, on which a main body 2 is provided and two first clamping mechanisms 3 are distributed on the front and rear sides of the main body 2. Second clamping mechanisms 4 are respectively provided on the front and rear sides of the main body 2. The second clamping mechanisms 4 clamp a plurality of tabs 5 distributed in the left and right direction. The first clamping mechanisms 3 clamp a busbar 6. The tabs 5 pass through the busbar 6 on the same side.

[0030] In this embodiment, the main body 2 includes two side plates 21 distributed front and rear, which are connected by multiple connecting rods 22. The structure is simple and the cost is low.

[0031] In this embodiment, the first clamping mechanism 3 includes two support rods 31, a lower support plate 32, a crossbeam 33, and an upper support plate 34. The support rods 31 are fixedly mounted on the tray 1. The lower support plate 32 is located between the two support rods 31 and is used to abut against the lower end face of the busbar 6. The two ends of the crossbeam 33 correspond one-to-one with the two support rods 31, and the ends of the crossbeam 33 are detachably connected to the corresponding support rods 31 via connectors 35. The upper support plate 34 is fixedly mounted on the lower end face of the crossbeam 33 and is used to abut against the upper end face of the busbar 6. In this structure, the crossbeam 33 is detachable, so that the operator can change different upper support plates 34 according to the style of the busbar 6.

[0032] In this embodiment, the second clamping mechanism 4 includes multiple clamping units 41 distributed along the left-right direction. Each clamping unit 41 includes a fixed bar 411, a movable bar 412, and a fastener 413. The fixed bar 411 is fixedly connected to the side plate 21, and the movable bar 412 is detachably connected to the side plate 21 via the fastener 413. The fixed bar 411 and the movable bar 412 cooperate to clamp the tail of the electrode tab 5, and the head of the electrode tab 5 passes through the busbar 6 on the same side. The fixed bar 411 and the movable bar 412 are both located on the side of the side plate 21 away from the connecting rod 22, and the cross-section of the movable bar 412 is trapezoidal.

[0033] Example 2: Figure 4 As shown, the rest is the same as in Embodiment 1, except that the fastener 413 is a bolt, the movable strip 412 is provided with a first screw hole 4121, and the side plate 21 is provided with a plurality of through holes 211 corresponding to the plurality of first screw holes 4121. After the bolt passes through the through holes 211, it is threadedly connected to the corresponding first screw hole 4121. The structure is simple and easy to disassemble and assemble. Preferably, each movable strip 412 is provided with two first screw holes 4121.

[0034] Example 3: Figure 1 and Figure 5 As shown, the rest of the parts are the same as in Embodiment 1, except that end plates 8 are provided on the left and right sides of the main body 2, and two adjustment mechanisms 7, two support bars 11 and two limiting members 9 are provided on the tray 1. The two adjustment mechanisms 7 are symmetrically distributed from left to right, and the two support bars 11 are distributed on the front and rear sides of the adjustment mechanisms 7. The main body 2 rests on the upper surface of the support bars 11. The two limiting members 9 are distributed on the left and right sides of the main body 2. The two limiting members 9 correspond one-to-one with the two adjustment mechanisms 7. The adjustment mechanism 7 is used to control the left and right movement of the limiting members 9, so that the two limiting members 9 move closer to each other and abut against the end plates 8, or so that the two limiting members 9 move further away from each other and separate from the end plates 8.

[0035] In this embodiment, the adjustment mechanism 7 includes a drive motor (not shown in the figure), a rotating seat 71, a lead screw 72, a sliding seat 73, and a first connecting seat 74. The rotating seat 71 is fixedly connected to the tray 1. The lead screw 72 extends in the left-right direction and rotates in cooperation with the rotating seat 71. The drive motor is connected to one end of the lead screw 72 and is used to drive the lead screw 72 to rotate. The sliding seat 73 is provided with a second threaded hole that is threaded in cooperation with the lead screw 72. The first connecting seat 74 is fixedly disposed at the upper end of the sliding seat 73. The limiting member 9 includes a plurality of stops 91 fixedly disposed on the first connecting seat 74.

[0036] Example 4: Figure 1 , Figure 3 and Figure 6 As shown, the rest of the components are the same as in Embodiment 1, except that the first clamping mechanism 3 also includes a sliding unit 36 ​​and a locking unit 37. The sliding unit 36 ​​includes a fixed base 361, a guide rod 362, a first guide block 363, and a second connecting base 364. The fixed base 361 is fixedly connected to the tray 1. The guide rod 362 extends in the front-back direction and is connected to the fixed base 361. The first guide block 363 is provided with a guide hole for the guide rod 362 to pass through. The first guide block 363 and the guide rod 362 slide in a front-back manner. The second connecting base 364 is fixedly disposed on the upper end surface of the first guide block 363. The lower support plate 32 is disposed on the second connecting base 364. The locking unit 37 is used to lock the second connecting base 364. The lower support plate 32 and the second connecting base 364 are detachably connected for easy replacement by the operator. In this structure, the second connecting base 364 and the lower support plate 32 can slide back and forth, allowing the operator to push them back or forward for loading and unloading operations.

[0037] Example 5: Figure 1 , Figure 3 , Figure 6 and Figure 7As shown, the rest of the components are the same as in Embodiment 4, except that the locking unit 37 includes a mounting base 371, a rotating shaft 372, a pawl 373, a torsion spring 374, and a ratchet rack 375. The mounting base 371 is fixedly disposed at the lower end of the second connecting seat 364. The rotating shaft 372 is disposed on the mounting base 371. The middle part of the pawl 373 is rotatably engaged with the rotating shaft 372. The torsion spring 374 is sleeved on the rotating shaft 372, and both ends of the torsion spring 374 abut against the pawl 373 and the mounting base 371, respectively. The ratchet rack 375 is disposed on the tray 1 and extends in the front-to-back direction. The pawl 373 and the ratchet rack 375 cooperate with each other. The cooperation of the pawl 373 and the ratchet rack 375 has a backstop function. When the operator pushes the second connecting seat 364 and the lower support plate 32 forward, it can prevent the second connecting seat 364 and the lower support plate 32 from sliding backward, ensuring that the busbar 6 can fit tightly against the main body 2, simulating a real welding condition. When it is necessary to retract, simply disengage the pawl 373 from the ratchet 375 to release the anti-reverse function. If the ratchet 375 is designed to slide left and right, when locking is required, the ratchet 375 should be close to the pawl 373 and engage with the pawl 373. When unlocking, the ratchet 375 should be moved away from the pawl 373 and separated from the pawl 373.

[0038] In this embodiment, the tray 1 is also provided with a guide rail 12 extending in the front-to-back direction, and the lower end of the second connecting seat 364 is also provided with a second guide block 365, which slides in conjunction with the guide rail 12. By adding the guide rail 12 and the second guide block 365, the stability of the structure can be improved.

[0039] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A first-piece welding fixture for a battery module, comprising a tray (1), characterized in that: The tray (1) is provided with a main body (2) and two first clamping mechanisms (3) distributed on the front and rear sides of the main body (2). The front and rear sides of the main body (2) are respectively provided with second clamping mechanisms (4). The second clamping mechanisms (4) clamp a plurality of tabs (5) distributed in the left and right direction. The first clamping mechanisms (3) clamp a busbar (6). The tabs (5) pass through the busbar (6) on the same side.

2. The first-piece welding fixture for a battery module according to claim 1, characterized in that: The main body (2) includes two side plates (21) distributed front and back, and the two side plates (21) are connected by a plurality of connecting rods (22).

3. The first-piece welding fixture for a battery module according to claim 2, characterized in that: The second clamping mechanism (4) includes a plurality of clamping units (41) distributed in the left-right direction. Each clamping unit (41) includes a fixed bar (411), a movable bar (412), and a fastener (413). The fixed bar (411) is fixedly connected to the side plate (21), and the movable bar (412) is detachably connected to the side plate (21) through the fastener (413). The fixed bar (411) and the movable bar (412) cooperate to clamp the tail of the tab (5).

4. The first-piece welding fixture for a battery module according to claim 3, characterized in that: The fastener (413) is a bolt. The movable strip (412) is provided with a first screw hole (4121). The side plate (21) is provided with a plurality of through holes (211) corresponding to the plurality of first screw holes (4121). The bolt passes through the through holes (211) and is threadedly connected to the corresponding first screw hole (4121).

5. The first-piece welding fixture for a battery module according to claim 1, characterized in that: The main body (2) is provided with end plates (8) on its left and right sides respectively. The tray (1) is provided with two adjustment mechanisms (7), two support bars (11) and two limiting members (9). The two adjustment mechanisms (7) are symmetrically distributed on the left and right sides. The two support bars (11) are distributed on the front and rear sides of the adjustment mechanisms (7). The main body (2) rests on the upper surface of the support bars (11). The two limiting members (9) are distributed on the left and right sides of the main body (2). The two limiting members (9) correspond one-to-one with the two adjustment mechanisms (7). The adjustment mechanism (7) is used to control the left and right movement of the limiting members (9) so that the two limiting members (9) move closer to each other and abut against the end plates (8), or so that the two limiting members (9) move further away from each other and separate from the end plates (8).

6. The first-piece welding fixture for a battery module according to claim 5, characterized in that: The adjusting mechanism (7) includes a drive motor, a rotating seat (71), a lead screw (72), a sliding seat (73), and a first connecting seat (74). The rotating seat (71) is fixedly connected to the tray (1). The lead screw (72) extends in the left-right direction and rotates with the rotating seat (71). The drive motor is connected to one end of the lead screw (72) and is used to drive the lead screw (72) to rotate. The sliding seat (73) is provided with a second threaded hole that is threaded with the lead screw (72). The first connecting seat (74) is fixedly disposed at the upper end of the sliding seat (73). The limiting member (9) includes a plurality of stops (91) fixedly disposed on the first connecting seat (74).

7. The first-piece welding fixture for a battery module according to claim 1, characterized in that: The first clamping mechanism (3) includes two support rods (31), a lower support plate (32), a crossbeam (33), and an upper support plate (34). The support rods (31) are fixedly mounted on the tray (1). The lower support plate (32) is located between the two support rods (31) and is used to abut against the lower end face of the busbar (6). The two ends of the crossbeam (33) correspond one-to-one with the two support rods (31). The end of the crossbeam (33) is detachably connected to the corresponding support rod (31) through a connector (35). The upper support plate (34) is fixedly mounted on the lower end face of the crossbeam (33) and is used to abut against the upper end face of the busbar (6).

8. The first-piece welding fixture for a battery module according to claim 7, characterized in that: The first clamping mechanism (3) further includes a sliding unit (36) and a locking unit (37). The sliding unit (36) includes a fixed seat (361), a guide rod (362), a first guide block (363), and a second connecting seat (364). The fixed seat (361) is fixedly connected to the tray (1). The guide rod (362) extends in the front-back direction and is connected to the fixed seat (361). The first guide block (363) is provided with a guide hole for the guide rod (362) to pass through. The second connecting seat (364) is fixedly disposed on the upper surface of the first guide block (363). The lower support plate (32) is disposed on the second connecting seat (364). The locking unit (37) is used to lock the second connecting seat (364).

9. The first-piece welding fixture for a battery module according to claim 8, characterized in that: The locking unit (37) includes a mounting base (371), a rotating shaft (372), a pawl (373), a torsion spring (374), and a ratchet rack (375). The mounting base (371) is fixedly disposed at the lower end of the second connecting seat (364). The rotating shaft (372) is disposed on the mounting base (371). The middle part of the pawl (373) is rotatably engaged with the rotating shaft (372). The torsion spring (374) is sleeved on the rotating shaft (372). The two ends of the torsion spring (374) abut against the pawl (373) and the mounting base (371) respectively. The ratchet rack (375) is disposed on the tray (1) and extends in the front-back direction. The pawl (373) engages with the ratchet rack (375).

10. The first-piece welding fixture for a battery module according to claim 8, characterized in that: The tray (1) is also provided with a guide rail (12) extending in the front-back direction, and the lower end of the second connecting seat (364) is also provided with a second guide block (365), which slides in cooperation with the guide rail (12) in the front-back direction.

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