Welding clamping tool for assembling energy storage battery box

Abstract

The invention relates to the field of energy storage battery production and manufacturing, discloses a welding clamping tool for assembling an energy storage battery box, and aims to solve the problem that a clamp cannot adapt to fixing of different types of battery cells. The air cylinder is used for pushing the end part limiting top block to force the battery module to move towards the end part limiting module until the end part limiting module and the end part limiting top block stably clamp the battery module, so that the length limiting of the battery module is realized; meanwhile, the side stop blocks on the side limiting modules on the two sides abut against the sides of the battery module respectively, width limiting of the battery module is achieved, under the combined action of the side stop blocks and the side limiting modules, the battery module is stably clamped, and due to the fact that the distance between the two side stop blocks and the distance between the end limiting top block and the end limiting module can be freely adjusted, the battery module can be stably clamped; therefore, the clamping device can be suitable for clamping and fastening different types of battery modules, and finally the effect of adjusting and clamping in real time according to the number and the size of battery cells is achieved.

Description

Technical Field

[0001] The invention relates to the field of energy storage battery production and manufacturing, and in particular to a welding clamping tool for assembling an energy storage battery box. Background Art

[0002] As the core auxiliary equipment in the assembly process of the energy storage battery box, the main function of the welding clamping tool is to accurately and firmly fix the various components of the energy storage battery box. This fixing role is crucial because it can ensure that all components are maintained in the preset relative positions during the welding operation while maintaining a high degree of stability. This precise and stable positioning is not only conducive to the smooth progress of the welding operation, but also can significantly improve the quality of the welded joint, thereby ensuring the structural strength and electrical performance of the entire energy storage battery box, and plays an important role in improving the overall reliability and safety of the product.

[0003] However, in the current technological context, a significant limitation is that most energy storage battery production lines tend to use only one standardized welding clamping tool. Although this single tool design meets the needs of large-scale production to a certain extent, its flexibility and adaptability are relatively limited. Especially when facing the situation of changing the type of battery cell or adjusting the number of battery cells, the existing tooling often cannot provide full compatibility, which may lead to interruptions in the production process and increase additional adjustment costs and time costs. Summary of the invention

[0004] The present invention proposes a welding clamping tool for assembling an energy storage battery box, which has the advantage of real-time adjustment of clamping according to the number and size of battery cells, and is used to solve the problem that the clamp mentioned in the above background technology cannot adapt to the fixation of different types of battery cells.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a welding clamping tool for assembling an energy storage battery box, comprising: a base assembly, on the surface of which end limit modules and a cylinder are symmetrically arranged, and the end limit top block is fastened to the gas rod of the cylinder; a battery module, which is placed on the base assembly and located between the end limit top block and the end limit module; a guide rail, which is arranged on the surface of the base assembly, and on which a side limit module is installed, and on which a side stopper is installed; a pressure plate assembly, which is placed on the top of the battery module, and on the surface of the pressure plate assembly a cylindrical hole is opened, and a sensor is arranged in the cylindrical hole.

[0006] Furthermore, the number of the guide rails is two.

[0007] Furthermore, a shock-absorbing top block is movably installed inside the end limit module, and a return spring is connected between the shock-absorbing top block and the end limit module.

[0008] Furthermore, a one-way air inlet valve is fixedly installed on the top of the end limit module, and a damping hole is opened on the surface of the end limit module.

[0009] Furthermore, a driving gear row is provided at the bottom of the shock-absorbing top block, and a driving gear meshing with the outer teeth of the driving gear row is movably installed at the bottom of the base assembly. The driving gear is coaxially fastened with a left pressing gear and a right pressing gear. The guide rail is movably installed on the surface of the base assembly, and a right pressing gear row meshing with the right pressing gear is provided on one guide rail, and a left pressing gear row meshing with the left pressing gear is provided on the other guide rail.

[0010] Furthermore, a disengagement push spring is connected between the driving gear row and the shock-absorbing top block, a switching top frame is fastened to the bottom of the end limit top block, and a lifting top rod is fixedly installed at the end of the driving gear row.

[0011] Furthermore, a tensioning spring is connected between the left pressing tooth row and the guide rail.

[0012] Furthermore, the diameter value of the left pressed gear is 3-6 times the diameter value of the right pressed gear.

[0013] The present invention has the following beneficial effects:

[0014] The present invention provides a welding clamping tool for assembling an energy storage battery box, which integrates a highly flexible and precise clamping function. The core is the end limit top block fixedly installed on the cylinder. This design enables the cylinder to push the end limit top block when the battery module needs to be fixed, forcing the battery module to move in the direction of the preset end limit module. As the movement continues, the end limit module and the end limit top block work closely together to firmly clamp the battery module, thereby achieving precise limitation of the length of the battery module.

[0015] At the same time, the two sides of the tooling are also equipped with side limit modules. The side blocks on the modules can accurately reach the sides of the battery module to effectively limit the width of the battery module. Under the dual effects of length limit and width limit, the battery module is firmly clamped in the predetermined position, ensuring the stability and accuracy of the welding operation.

[0016] The distance between the two side blocks and between the end limit top block and the end limit module can be freely adjusted according to actual needs. This design not only improves the applicability of the tooling, making it easy to cope with the clamping requirements of different types of battery modules, but also realizes the function of real-time adjustment of clamping according to the number and size of battery cells, greatly improving production efficiency and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] The present invention may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the overall external three-dimensional structure;

[0020] Figure 2 It is a schematic diagram of the overall front structure;

[0021] Figure 3 It is a schematic diagram of the overall bottom three-dimensional structure;

[0022] Figure 4 This is a schematic diagram of the installation position of the right pressed gear row and its three-dimensional structure;

[0023] Figure 5 It is a schematic diagram of the installation position and three-dimensional structure of the left pressed gear row;

[0024] Figure 6 It is a schematic diagram of the installation position of the drive gear row and its three-dimensional structure.

[0025] In the figure: 1. base assembly; 2. guide rail; 3. end limit module; 300. damping hole; 301. one-way air intake valve; 4. side limit module; 5. end limit top block; 501. switching top frame; 6. cylinder; 7. side block; 8. battery module; 9. pressure plate assembly; 10. sensor; 11. shock-absorbing top block; 110. reset spring; 12. drive gear row; 120. disengagement push spring; 121. lifting push rod; 13. left pressing gear row; 130. tightening spring; 14. right pressing gear row; 15. drive gear; 16. left pressing gear; 17. right pressing gear. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] For example, see Figure 1It can be seen that the base assembly 1 can be fixed in the desired position by bolts arranged at the four corners of the bottom. The end limit module 3 is fastened to one side of the surface of the base assembly 1, the cylinder 6 is fixedly installed on the opposite side of the end limit module 3, and the end limit top block 5 is fastened to the gas rod of the cylinder 6. The end limit top block 5 pushed by the cylinder 6 has a tendency to move toward the end limit module 3. When the battery module 8 is placed on the base assembly 1, the end limit top block 5 pushed by the cylinder 6 will pressurize the battery module 8, and the length of the battery module 8 is limited under the joint clamping between the end limit top block 5 and the end limit module 3.

[0028] At the same time, the surface of the base assembly 1 is provided with a guide rail 2, and a side limit module 4 is installed on the guide rail 2. Figure 1 It can be clearly seen that there are two guide rails 2, so there are also two side blocks 7 installed on the side limit module 4. The two side blocks 7 are respectively used to abut against the two sides of the battery module 8, so as to achieve the limiting and fastening of the battery module 8 in the width direction.

[0029] In order to ensure efficient welding, a pressure plate assembly 9 is placed on the battery module 8. A cylindrical hole is opened on the surface of the pressure plate assembly 9. The cylindrical hole is used to ensure the positioning of the welding point of the battery module 8. A sensor 10 is also arranged in the cylindrical hole to determine whether the welding meets the requirements.

[0030] In actual application, the end limit module 3 is in a fixed state. By adjusting the extension of the gas rod in the cylinder 6, the end limit top block 5 is pushed outward and against the outside of the battery module 8, and finally the length dimension of the battery module 8 is adjusted; at the same time, the width dimension of the battery module 8 is adjusted by tightening the side block 7. Finally, the length and width dimensions of the battery module 8 can be adjusted as needed, so as to adapt to the clamping and tightening of battery modules 8 of different types and quantities.

[0031] The pressing plate assembly 9 is pressed on the surface of the battery module 8, and the cylindrical hole on the pressing plate assembly 9 is used to facilitate the welding and positioning of the upper electrode of the battery module 8. In this process, since the sensor 10 is placed in the opening, when the welding is completed, the welding pull-out force is measured according to the sensor 10, and a comparison is made to determine whether the welding meets the requirements.

[0032] The second embodiment is a further improvement on the basis of the first embodiment. Figure 1 and Figure 6It can be seen that a shock-absorbing top block 11 is movably installed inside the end limit module 3, and a return spring 110 is connected between the shock-absorbing top block 11 and the end limit module 3. The shock-absorbing top block 11 is always pushed outward by the elastic force of the return spring 110. In actual application, when the battery module 8 is placed on the surface of the base assembly 1, the cylinder 6 is used to push the end limit top block 5 to one end of the battery module 8, and the battery module 8 is pushed to move toward the shock-absorbing top block 11 and press it according to the end limit top block 5. In this process, the battery module 8 pushes the shock-absorbing top block 11 and presses the return spring 110. Since the battery module 8 is pushed by the elastic force of the return spring 110 and has a certain buffer damping, it can avoid the problem that when the cylinder 6 pushes the end limit top block 5 to contact the battery module 8, there is no buffer damping between the end limit top block 5 and the battery module 8, which causes impact damage to the battery module 8. Finally, the elastic force buffer of the return spring 110 is utilized to greatly ensure the safety of the battery module 8 during the clamping process.

[0033] On this basis, refer to Figure 6 It can be clearly seen that a one-way air intake valve 301 is fixedly installed on the top of the end limit module 3, and the one-way air intake valve 301 allows the external airflow to be input unidirectionally into the inner cavity of the end limit module 3. A damping hole 300 located on one side of the one-way air intake valve 301 is provided on the surface of the end limit module 3, so that when the shock-absorbing top block 11 moves toward the end limit module 3 and squeezes the return spring 110, the shock-absorbing top block 11 simultaneously suppresses the air in the inner cavity of the end limit module 3, and the elastic damping buffer strength of the shock-absorbing top block 11 is further enhanced by air compression.

[0034] Embodiment 3 is a further improvement on the basis of Embodiments 1 and 2. Figure 3-Figure 6 It can be clearly seen that a driving gear row 12 is provided at the bottom of the shock-absorbing top block 11, and correspondingly, a driving gear 15 meshing with the external teeth of the driving gear row 12 is movably installed at the bottom of the base assembly 1. When the shock-absorbing top block 11 drives the driving gear row 12 to move, the driving gear row 12 and the driving gear 15 are meshed to force the driving gear 15 to rotate synchronously. The left pressing gear 16 and the right pressing gear 17 are both coaxially fastened with the driving gear 15. When the driving gear 15 rotates, it will rotate synchronously with the left pressing gear 16 and the right pressing gear 17.

[0035] from Figure 1 It can be seen that the guide rail 2 is movably mounted on the surface of the base assembly 1 through the cylindrical guide rod, so that the guide rail 2 can move along the cylindrical guide rod to achieve the side block 7 being relatively away from / close to the battery module 8. Since the sliding position of the guide rail 2 can be controlled to limit the spacing between the side blocks 7, it is more convenient for the side blocks 7 to limit the width of the battery module 8. Figure 1 , Figure 3-Figure 6 It can be clearly seen that there are two guide rails 2, and the two guide rails 2 are symmetrically arranged on the surface of the base assembly 1. One guide rail 2 is provided with a right-side pressing gear row 14 meshing with a right-side pressing gear 17, and the other guide rail 2 is provided with a left-side pressing gear row 13 meshing with a left-side pressing gear 16. When the shock-absorbing top block 11 is pressed toward the end limit module 3, the shock-absorbing top block 11 is used to drag the driving gear row 12 to move synchronously, and the left-side pressing gear 16 and the left-side pressing gear row 13 are meshed, and the right-side pressing gear 17 and the right-side pressing gear row 14 are meshed, and the two guide rails 2 are pulled closer to each other until the side blocks 7 on the two guide rails 2 are attached to the outside of the battery module 8, so as to realize adaptive tightening and clamping of the battery module 8 in the width direction.

[0036] In specific application, the battery module 8 is placed on the base assembly 1 and is attached to the shock-absorbing top block 11. The cylinder 6 pushes the end limit top block 5 toward the battery module 8 until the end limit top block 5 presses against the battery module 8. The shock-absorbing top block 11 is used to squeeze the return spring 110 and the airflow in the inner cavity of the end limit module 3 to achieve buffering of the battery module 8 after being hit.

[0037] Afterwards, as the end limit top block 5 pushes the battery module 8 to further pressurize the shock-absorbing top block 11, the shock-absorbing top block 11 squeezes the airflow in the inner cavity of the end limit module 3, and the airflow in the inner cavity of the end limit module 3 can only flow out slowly from the damping hole 300, causing the shock-absorbing top block 11 to move slowly to the right. At the same time, when the shock-absorbing top block 11 moves toward the end limit module 3, it will pull the driving gear row 12 and force the driving gear 15 meshed with it to drive the left pressing gear 16 and the right pressing gear 17 to rotate. The left pressing gear 16 and the right pressing gear 17 rotate to force the right pressing gear row 14 and the left pressing gear row 13 meshed with it to move relative to each other, and use the left pressing gear row 13 and the right pressing gear row 14 to pull the guide rail 2, so that the side blocks 7 on the guide rail 2 are close to each other until they reach the outside of the battery module 8, thereby limiting the width direction of the battery module 8.

[0038] It can be seen that in the application process of the third embodiment, the shock-absorbing top block 11 is used to squeeze the airflow in the inner cavity of the end limit module 3 to achieve buffering and shock absorption, and the airflow in the inner cavity of the end limit module 3 slowly flows out from the damping hole 300, thereby limiting the movement speed of the drive gear row 12, and then limiting the low-speed rotation of the drive gear 15. Finally, the drive gear 15 drives the left pressing gear 16 and the right pressing gear 17 to rotate at a low speed, forcing the left pressing gear row 13 and the right pressing gear row 14 to move slowly, thereby reducing the movement speed of the guide rail 2, and avoiding the phenomenon that the side block 7 hits the outside of the battery module 8 due to the excessive movement of the guide rail 2. Finally, when the side block 7 is fastened and clamped, the movement of the guide rail 2 is limited by the battery module 8, and the movement of the left pressing gear row 13 and the right pressing gear row 14 is limited. The drive gear 15 cannot rotate, and the movement of the drive gear row 12 is also limited. The locking of the drive gear row 12 makes the shock-absorbing top block 11 always stick to the end of the battery module 8. At this point, pressure is applied to one end of the battery module 8 through the cylinder 6 to ensure that the other three sides of the battery module 8 can be firmly clamped. This method can greatly reduce the use of driving components and make the entire device more lightweight.

[0039] Embodiment 4 is a further improvement on embodiment 3. In embodiment 3, since the two side blocks 7 clamp and tighten the two sides of the battery module 8 at the same time, the battery module 8 needs to be placed in the center. If the placement position is relatively offset, the two side blocks 7 cannot contact the sides of the battery module 8 at the same time, and finally only one side of the side block 7 is pressed on the battery module 8. Moreover, after the battery module 8 fixed in embodiment 3 is welded in the manner described in embodiment 1, the two side blocks 7 always clamp and tighten the battery module 8. This causes that when the end limit top block 5 is separated from the battery module 8, the battery module 8 is clamped by the two side blocks 7 and still overcomes the elastic force of the reset spring 110, which finally makes it difficult to remove the battery module 8. In order to solve such problems, this embodiment 4 is presented. Please refer to Figure 2 and Figure 6 It can be seen that a disengagement spring 120 is connected between the drive gear row 12 and the shock-absorbing top block 11. In this embodiment, the drive gear row 12 can move up and down along the shock-absorbing top block 11 to achieve the engagement / disengagement between the drive gear row 12 and the drive gear 15. Driven by the elastic force of the disengagement spring 120, the drive gear row 12 is forced to always be in a disengaged state from the drive gear 15 under normal circumstances. Regarding the drive component that meshes between the drive gear row 12 and the drive gear 15, a switching top frame 501 is fastened to the bottom of the end limiting top block 5, and the end of the switching top frame 501 is inclined. Correspondingly, a lifting top rod 121 is fixedly installed at the end of the drive gear row 12, and a ball is generally provided at the bottom of the lifting top rod 121 to reduce the contact friction. Figure 2As shown, when the cylinder 6 retracts the end limit push block 5 to the left limit, the switching push frame 501 is relatively far away from the lifting push rod 121. At this time, the lifting push rod 121 is disengaged from the driving gear 15 under the elastic force of the disengagement push spring 120; when the cylinder 6 pushes the end limit push block 5 to move to the right, the inclined surface of the switching push frame 501 forces the lifting push rod 121 upward and squeezes the disengagement push spring 120. When the lifting push rod 121 moves to the top plane of the switching push frame 501, the lifting push rod 121 and the driving gear 15 are engaged.

[0040] Moreover, reference Figure 3-Figure 5 It can be seen that a tightening spring 130 is connected between the left pressing gear row 13 and the guide rail 2. The elastic force of the tightening spring 130 makes the left pressing gear row 13 have a tendency to move on the guide rail 2. The diameter of the left pressing gear 16 is 3-6 times the diameter of the right pressing gear 17. When the left pressing gear 16 and the right pressing gear 17 rotate synchronously, the left pressing gear 16 can drive the meshing left pressing gear row 13 to move at a faster speed.

[0041] In actual application, the battery module 8 is placed on the base assembly 1, and the cylinder 6 pushes the end limit top block 5 and makes it reach the end of the battery module 8. At this time, the combination Figure 2 It can be seen that when the end limit top block 5 drives the switching top frame 501 to push to the right, the inclined surface at the end of the switching top frame 501 will hit the lifting top rod 121 and force the lifting top rod 121 to push the driving gear row 12 to move upward. The upward driving gear row 12 not only compresses and accumulates the disengagement push spring 120, but also makes the driving gear 15 mesh with the driving gear row 12. As the cylinder 6 continuously applies thrust to the end limit top block 5, the other end of the battery module 8 squeezes the shock-absorbing top block 11, forcing the shock-absorbing top block 11 to push to the right and squeeze the air in the inner cavity of the end limit module 3 and the return spring 110.

[0042] At the same time, the shock-absorbing top block 11 is used to buffer and damp the battery module 8 to prevent the battery module 8 from being damaged by impact. In addition, as the shock-absorbing top block 11 moves to the right, the driving gear row 12 is pulled to move synchronously, and the driving gear row 12 will drive the driving gear 15 meshing therewith to rotate, and the left pressing gear 16 and the right pressing gear 17 will rotate with the driving gear 15. Since the diameter of the left pressing gear 16 is relatively large, the left pressing gear 16 will make the movement speed of the left pressing gear row 13 relatively greater than the right pressing gear row 14. Finally, the guide rail 2 connected to the left pressing gear row 13 will drive the side block 7 to quickly stick to the side of the battery module 8, and as the battery module 8 blocks the side block 7, the guide rail 2 is restricted from moving. At this time, the left pressing gear row 13 will squeeze and store force on the tightening spring 130. As the driving gear row 12 continues to follow the shock-absorbing top block 11 to move toward the end limit module 3, the guide rail 2 connected to the right pressing gear row 14 will push the side block 7 to gradually approach the other side of the battery module 8, until the side block 7 moving synchronously with the right pressing gear row 14 is attached to the side of the battery module 8, and the side block 7 completes the clamping of the two sides of the battery module 8. It can be seen here that since the two side blocks 7 successively reach the sides of the battery module 8, even if there is a deviation in the position where the battery module 8 is placed, it does not affect the fastening and clamping of the side block 7 to the outer side of the battery module 8.

[0043] After the side block 7 that moves synchronously with the right pressing gear row 14 is attached to the side of the battery module 8, the right pressing gear row 14 is blocked by the battery module 8 to limit the movement, and the engagement between the right pressing gear row 14 and the right pressing gear 17 further limits the rotation of the driving gear 15. The driving gear 15 uses the driving gear row 12 to limit the movement of the shock-absorbing top block 11, and finally completes the fastening and clamping of the side of the battery module 8. Then, the pole pieces on the battery module 8 can be welded according to the content of the first embodiment.

[0044] When welding and testing are completed, the end limit top block 5 is pulled by the cylinder 6 to release the pressure on the end of the battery module 8. Figure 2As shown, when the cylinder 6 pulls the end limit top block 5 to move to the left, the switching top frame 501 finally disengages from the lifting top rod 121, and then, the driving gear row 12 moves downward and disengages from the driving gear 15 under the elastic force of the disengagement push spring 120. The rotation of the driving gear 15 will no longer be restricted after disengaging from the driving gear row 12. Then, under the elastic force of the tightening spring 130, the left pressing gear row 13 drives the left pressing gear 16 to rotate, and the left pressing gear 16 and the right pressing gear 17 rotate synchronously, forcing the right pressing gear 17 to push the right pressing gear row 14 to move, and the right pressing gear row 14 drives the side block 7 on the guide rail 2 to move relatively away from the battery module 8, thereby releasing the pressing of the battery module 8. It can be seen from this that one end and one side of the battery module 8 have been released from restrictions, thereby facilitating the removal of the battery module 8. Finally, the damping top block 11 is pushed to the left by the elastic force of the return spring 110, and the one-way air inlet valve 301 is used to quickly replenish the air flow into the inner cavity of the end limit module 3. This cycle is repeated to achieve the clamping, fixing and welding of the next battery module 8.

Claims

1. A welding clamping tool for assembling an energy storage battery box, characterized in that: include: The base assembly (1) has an end limit module (3) and a cylinder (6) symmetrically arranged on its surface, and an end limit top block (5) is fastened to the gas rod of the cylinder (6); A battery module (8) is placed on the base assembly (1) and is located between the end stop top block (5) and the end stop module (3); A guide rail (2) is arranged on the surface of the base assembly (1), and a side limit module (4) is installed on the guide rail (2), and a side stopper (7) is installed on the side limit module (4); The pressure plate assembly (9) is placed on the top of the battery module (8), and a cylindrical hole is opened on the surface of the pressure plate assembly (9), and a sensor (10) is arranged in the cylindrical hole.

2. The welding clamping tool for assembling the energy storage battery box according to claim 1 is characterized in that: The number of guide rails (2) is two.

3. The welding clamping tool for assembling the energy storage battery box according to claim 1 is characterized in that: A shock-absorbing top block (11) is movably mounted inside the end limit module (3), and a return spring (110) is connected between the shock-absorbing top block (11) and the end limit module (3).

4. The welding clamping tool for assembling the energy storage battery box according to claim 3 is characterized in that: A one-way air inlet valve (301) is fixedly mounted on the top of the end limit module (3), and a damping hole (300) is provided on the surface of the end limit module (3).

5. The welding clamping tool for assembling the energy storage battery box according to claim 3 is characterized in that: A driving gear row (12) is arranged at the bottom of the shock-absorbing top block (11); a driving gear (15) meshing with the external teeth of the driving gear row (12) is movably mounted at the bottom of the base assembly (1); a left pressing gear (16) and a right pressing gear (17) are coaxially fastened to the driving gear (15); a guide rail (2) is movably mounted on the surface of the base assembly (1); a right pressing gear row (14) meshing with the right pressing gear (17) is arranged on one guide rail (2); and a left pressing gear row (13) meshing with the left pressing gear (16) is arranged on the other guide rail (2).

6. The welding clamping tool for assembling the energy storage battery box according to claim 5, characterized in that: A disengagement push spring (120) is connected between the driving gear row (12) and the shock-absorbing top block (11), a switching top frame (501) is fastened to the bottom of the end limit top block (5), and a lifting top rod (121) is fixedly installed at the end of the driving gear row (12).

7. The welding clamping tool for assembling the energy storage battery box according to claim 6, characterized in that: A tensioning spring (130) is connected between the left pressing tooth row (13) and the guide rail (2).

8. The welding clamping tool for assembling the energy storage battery box according to claim 6, characterized in that: The diameter of the left pressed gear (16) is 3-6 times the diameter of the right pressed gear (17).

Images