A preheatable battery piece welding machine

Abstract

The application discloses a preheatable battery piece welding machine, which comprises a bottom plate, a hydraulic cylinder fixedly installed at the right side of the upper end of the bottom plate, a positioning mechanism for positioning and clamping a battery piece group on the bottom plate, a push plate slidably installed at the upper end of the bottom plate, the right end of the push plate being fixedly connected with the hydraulic cylinder, a movable plate arranged at the left side of the push plate, the lower end of the movable plate being slidably installed on the bottom plate, and a fixed plate fixedly installed at the left side of the upper end of the bottom plate. In the application, when the side plates on the two sides are close to each other, the guide rods two on the two sides, the movable frame, the welding rod and the inclined plane frame are also close to each other, the inclined plane frame is blocked by the jacking rod, the inclined plane frame, the movable frame and the welding rod are pushed to slide downward on the guide rod two, the spring four is compressed, and the lower end of the welding rod is in contact with the welding area at the upper end of the battery piece group when the side plates on the two sides stop moving, so that subsequent welding operation is facilitated, manual holding of the welding rod for welding is not needed, and the welding quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of battery cell manufacturing technology, specifically to a preheatable battery cell welding machine. Background Technology

[0002] Solar cells are the basic building blocks of solar cells, primarily used to convert light energy into electrical energy. They can be divided into solar cell sheets and metal-based solar cells. Solar cell sheets mainly use semiconductor materials such as monocrystalline silicon and polycrystalline silicon, while metal-based solar cells often use metal materials such as stainless steel and phosphor bronze. The former are widely used in photovoltaic power generation systems, while the latter are commonly found in conductive components of electronic devices.

[0003] Currently, most solar cell welding machines on the market still have some shortcomings. For example, the "solar cell welding machine" with Chinese patent application number CN202020942667.4 includes a welding strip placement mechanism, a pressing tool, a circulation mechanism, and a welding mechanism. The welding strip placement mechanism is used to place the welding strip on the main grid line of the solar cell, and the pressing tool is used to fix the welding strip on the main grid line of the solar cell.

[0004] However, the above-mentioned existing technical solutions have the following drawbacks: when multiple battery cells are transported, they are prone to shaking, which can create gaps and cause the welding ribbon to shift from the welding area of ​​the battery cells, thus affecting the welding quality of subsequent battery cells.

[0005] Therefore, we propose a preheatable cell welding machine to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a preheatable battery cell welding machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a preheatable battery cell welding machine, comprising a base plate, wherein a hydraulic cylinder is fixedly installed on the upper right side of the base plate; It is also provided with a positioning mechanism for positioning and clamping the battery pack on the base plate. The positioning mechanism includes a push plate that is slidably installed on the upper part of the base plate. The right end of the push plate is fixedly connected to a hydraulic cylinder. A movable plate is provided on the left side of the push plate. The lower end of the movable plate is slidably installed on the base plate. A fixed plate is fixedly installed on the upper part of the base plate to the left of the movable plate. Side plates are symmetrically slidably installed on the upper part of the base plate. It also includes a welding mechanism for welding the battery cell pack on the base plate. The welding mechanism includes movable frames symmetrically arranged on the upper side of the side plate. Welding rods are placed on the ends of the movable frames that are close to each other. Clamping plates are slidably installed on the movable frames corresponding to the welding rods. The ends of the clamping plates that are close to each other are provided with inclined surfaces. Springs are fixedly installed on the upper end of the clamping plates. The upper end of the springs is fixedly installed on the movable frames.

[0008] Preferably, a guide rod is fixedly installed on the right end of the movable plate, and the right end of the guide rod is slidably installed on the push plate. A spring is sleeved on the outer side of the guide rod, and the left and right ends of the spring are fixedly installed on the movable plate and the push plate, respectively.

[0009] Preferably, a connecting rod is fixedly installed at the ends of the two side plates that are far apart from each other, and a vertical plate is slidably installed through the middle of the connecting rod, with the lower end of the vertical plate fixedly installed on the base plate.

[0010] Preferably, spring 2 is sleeved on the outer side of each connecting rod, and the two ends of spring 2 are fixedly connected to the vertical plate and the connecting rod respectively, and inclined plates are fixedly installed on the front and rear ends of the push plate corresponding to the connecting rod.

[0011] Preferably, each of the side plates has a guide rod 2 fixedly installed at its upper end. The upper end of the guide rod 2 is slidably installed through the movable frame on both sides. A spring 4 is sleeved on the outer side of each guide rod 2. An inclined frame is fixedly installed at the upper end of each movable frame, and a top rod is fixedly installed at the upper end of the vertical plate corresponding to the inclined frame.

[0012] Preferably, each of the welding rods has a pusher bar on the upper part of the side that is close to each other, and a drive plate is fixedly installed on the upper end of each pusher bar. A fixing frame is slidably installed on the left end of the drive plate.

[0013] Preferably, the fixed frame has an oblique sliding groove corresponding to the drive plate, one end of the fixed frame that is far away from the other end is fixedly connected to the inclined frame, and a spring is fixedly installed between the drive plate and the fixed frame.

[0014] Preferably, each of the drive plates has a push bar abutting against and fitting at one end close to the other, and an electric push rod is fixedly installed at one end of each push bar away from the other, with the ends of the electric push rods away from each other being fixedly connected to the fixing frame.

[0015] Preferably, elastic pressure strips are slidably installed on both the left and right sides of the upper end of the push bar, and an elastic plate is fixedly installed on the upper end of the movable frame corresponding to the elastic pressure strips.

[0016] Preferably, each of the elastic pressure strips has a rack fixedly installed at one end that is close to the other, and a gear meshes between the racks. A motor is provided at the upper end of the gear, and the upper end of the motor is fixedly connected to the drive plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the worker places multiple sets of battery cells to be welded between the movable plate and the fixed plate in sequence, and starts the hydraulic cylinder to push the spring, the guide rod and the movable plate to move to the left. The movable plate pushes the multiple sets of battery cells towards the fixed plate, so that the movable plate and the fixed plate cooperate to clamp the multiple sets of battery cells from the left and right sides, ensuring that there will be no gaps during subsequent welding and improving the welding quality.

[0018] 2. In this invention, the push plate also drives the inclined plates on both sides to move synchronously to the left. The first spring can be adaptively compressed to prevent the movable plate from continuing to apply rigid pressure to the multiple sets of battery cells after clamping them, which could damage the battery cell sets. The inclined plates squeeze the connecting rod, causing it to drive the side plates on both sides to move closer to each other on the base plate. The second spring is adaptively compressed until the horizontal plane of the inclined plates on both sides contacts the connecting rod. The connecting rod and the side plates stop moving, and the distance at which the side plates stop moving is equal to the width of the battery cell set. This facilitates the clamping and positioning of the front and rear sides of the battery cell set. In conjunction with the movable plate and the fixed plate, multiple sets of battery cells can be clamped and positioned, which helps to ensure that the subsequent welding position is kept on the same horizontal line as the welding rod, ensuring the welding quality and eliminating the need for manual adjustment, thus improving the subsequent welding efficiency.

[0019] 3. In this invention, when the side plates on both sides approach each other, they will also cause the guide rods on both sides, the movable frame, the welding rod and the inclined frame to approach each other. The inclined frame will be blocked by the top rod, which will push the inclined frame, the movable frame and the welding rod to slide down on the guide rod, compressing the spring four. When the side plates on both sides stop moving, the lower end of the welding rod contacts the welding area at the upper end of the battery pack, which facilitates subsequent welding operations, eliminates the need for manual welding by holding the welding rod, and ensures welding quality.

[0020] 4. In this invention, the start-up electric push rod drives the push bars on both sides to move away from each other. The push bars on both sides push the drive plates on both sides to slide along the inclined slide groove on the fixed frame, compressing the spring five. The drive plate drives the push bar to move towards the welding rod until it is completely in contact with the welding rod. This is beneficial for pushing the welding rod on the movable frame flat, avoiding the situation where the welding rod deviates when it comes into contact with the welding area of ​​the battery cell assembly, thus ensuring the welding quality of the battery cell assembly.

[0021] 5. In this invention, the starting motor drives the gear to rotate, the gear drives the racks on both sides to move away from each other, and the racks drive the elastic pressure strips on both sides to move away from each other. After the flattening strip flattens the position of the welding rod, the lower end of the elastic pressure strip is in contact with the upper end of the welding rod. At the same time, the elastic pressure strip is squeezed by the elastic plate, so that the elastic pressure strip tightly abuts and adheres to both ends of the welding rod. This is beneficial to flattening both ends of the welding rod and preventing the ends of the welding rod from lifting up and creating gaps with the welding area of ​​the battery cell assembly. This is beneficial to the welding quality of the subsequent welding rod. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall right-side three-dimensional structure of the present invention; Figure 2 This is a top-view three-dimensional structural diagram of the present invention; Figure 3 For the present invention Figure 1Enlarged schematic diagram of the connection between the welding rod and the side plate; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of part of the middle side plate; Figure 5 For the present invention Figure 3 Schematic diagram of the structure at point A; Figure 6 For the present invention Figure 3 Schematic diagram of the structure at point B; Figure 7 For the present invention Figure 3 Schematic diagram of the structure at point C; Figure 8 For the present invention Figure 3 A schematic diagram of the structure at point D.

[0023] In the diagram: 1. Base plate; 2. Hydraulic cylinder; Positioning mechanism: 3. Push plate; 4. Guide rod 1; 5. Movable plate; 6. Spring 1; 7. Fixed plate; 8. Side plate; 9. Connecting rod; 10. Vertical plate; 11. Spring 2; 12. Inclined plate; Welding mechanism: 13. Movable frame; 14. Welding rod; 15. Clamping plate; 16. Spring 3; 17. Guide rod 2; 18. Spring 4; 19. Inclined frame; 20. Top rod; 21. Push bar; 22. Drive plate; 23. Fixed frame; 24. Inclined slide; 25. Spring 5; 26. Push bar; 27. Electric push rod; 28. Elastic pressure bar; 29. ​​Elastic plate; 30. Rack; 31. Gear; 32. Motor. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-8This invention provides a technical solution: a preheatable battery cell welding machine, comprising a base plate 1, wherein a hydraulic cylinder 2 is fixedly installed on the upper right side of the base plate 1; and a positioning mechanism for positioning and clamping the battery cell assembly on the base plate 1, the positioning mechanism comprising a push plate 3 slidably installed on the upper end of the base plate 1, the right end of the push plate 3 being fixedly connected to the hydraulic cylinder 2, a movable plate 5 on the left side of the push plate 3, the lower end of the movable plate 5 being slidably installed on the base plate 1, a fixed plate 7 fixedly installed on the upper end of the base plate 1 to the left of the movable plate 5, and side plates 8 symmetrically slidably installed on the upper end of the base plate 1. A guide rod 4 is fixedly installed at one end. The right end of the guide rod 4 is slidably installed on the push plate 3. A spring 6 is sleeved on the outer side of the guide rod 4. The left and right ends of the spring 6 are fixedly installed on the movable plate 5 and the push plate 3, respectively. A connecting rod 9 is fixedly installed at the ends of the side plates 8 on both sides that are far apart from each other. A vertical plate 10 is slidably installed through the middle of the connecting rod 9. The lower end of the vertical plate 10 is fixedly installed on the bottom plate 1. A second spring 11 is sleeved on the outer side of the connecting rod 9. The two ends of the second spring 11 are fixedly connected to the vertical plate 10 and the connecting rod 9, respectively. Inclined plates 12 are fixedly installed at the front and rear ends of the push plate 3 corresponding to the connecting rod 9. During operation, workers place multiple sets of battery cells to be welded sequentially between the movable plate 5 and the fixed plate 7. Hydraulic cylinder 2 is activated, pushing spring 6, guide rod 4, and movable plate 5 to the left. Movable plate 5 pushes the battery cells towards fixed plate 7, allowing them to clamp together and prevent gaps during subsequent welding, thus improving welding quality. Simultaneously, push plate 3 also moves the inclined plates 12 on both sides to the left. The spring 6 is adaptively compressed to prevent the movable plate 5 from applying rigid pressure to the battery cells after clamping them, which could damage the battery cells. The inclined plate 12 presses against the connecting rod 9, causing the side plates 8 on both sides to move closer to each other on the base plate 1. The spring 11 is adaptively compressed until the horizontal plane of the inclined plate 12 on both sides contacts the connecting rod 9. At this point, the connecting rod 9 and the side plates 8 stop moving. The distance at which the side plates 8 stop moving is equal to the width of the battery pack, which is beneficial for clamping and positioning the front and rear sides of the battery pack. In conjunction with the movable plate 5 and the fixed plate 7, multiple battery packs can be clamped and positioned. This helps ensure that the subsequent welding position is kept on the same horizontal line as the welding rod 14, ensuring the quality of the welding. It also eliminates the need for manual adjustment and improves the efficiency of subsequent welding.

[0026] A welding mechanism for welding the battery cell pack on the base plate 1 is also provided. The welding mechanism includes movable frames 13 symmetrically arranged on the upper side of the side plate 8. Welding rods 14 are placed in contact with each other on the ends of the movable frames 13 that are close to each other. Clamping plates 15 are slidably installed on the movable frames 13 corresponding to the welding rods 14. The ends of the clamping plates 15 that are close to each other are all provided with inclined surfaces. Springs 3 16 are fixedly installed on the upper end of each clamping plate 15. The upper end of the springs 3 16 is fixedly installed on the movable frame 13. A guide rod 4 is fixedly installed on the right end of the movable plate 5. The right end of the guide rod 4 is slidably installed on the push plate 3. The outer side of the guide rod 4 is... A spring 6 is fitted on the upper part of the plate. The left and right ends of the spring 6 are fixedly mounted on the movable plate 5 and the push plate 3, respectively. A connecting rod 9 is fixedly mounted on the opposite ends of the side plates 8. A vertical plate 10 is slidably mounted through the middle of the connecting rod 9. The lower end of the vertical plate 10 is fixedly mounted on the base plate 1. A second spring 11 is fitted on the outer side of each connecting rod 9. Both ends of the second spring 11 are fixedly connected to the vertical plate 10 and the connecting rod 9, respectively. Inclined plates 12 are fixedly mounted on the front and rear ends of the push plate 3 corresponding to the connecting rod 9. A second guide rod 17 is fixedly mounted on the upper end of each side plate 8. The upper ends of the second guide rod 17 are slidably mounted through the sides of the plate 8. On the movable frame 13, springs 18 are fitted on the outer sides of guide rods 17. Inclined frames 19 are fixedly installed on the upper end of the movable frame 13, and top rods 20 are fixedly installed on the upper end of the vertical plate 10 corresponding to the inclined frames 19. Pushing strips 21 are provided on the upper parts of the sides of the welding rods 14 that are close to each other. Drive plates 22 are fixedly installed on the upper ends of the pushing strips 21. A fixed frame 23 is slidably installed on the left end of the drive plate 22. An inclined groove 24 is opened on the fixed frame 23 corresponding to the drive plate 22. The ends of the fixed frames 23 that are far apart from each other are fixedly connected to the inclined frames 19. Springs 5 ​​are fixedly installed between the drive plate 22 and the fixed frame 23. 25. Push bars 26 are abutted and fitted at the ends of the drive plates 22 that are close to each other. Electric push rods 27 are fixedly installed at the ends of the push bars 26 that are far apart from each other. The ends of the electric push rods 27 that are far apart from each other are fixedly connected to the fixed frame 23. Elastic pressure strips 28 are slidably installed on the left and right sides of the upper end of the push bar 21. Elastic plates 29 are fixedly installed on the upper end of the movable frame 13 corresponding to the elastic pressure strips 28. Racks 30 are fixedly installed at the ends of the elastic pressure strips 28 that are close to each other. Gears 31 mesh between the racks 30. A motor 32 is provided on the upper end of the gear 31. The upper end of the motor 32 is fixedly connected to the drive plate 22. During operation, when the side plates 8 on both sides approach each other, they also cause the guide rods 17, movable frame 13, welding rod 14, and inclined frame 19 on both sides to approach each other. The inclined frame 19 is blocked by the top rod 20, which pushes the inclined frame 19, movable frame 13, and welding rod 14 to slide downward on the guide rod 17, compressing the spring 18. When the side plates 8 on both sides stop moving, the lower end of the welding rod 14 contacts the welding area at the upper end of the battery pack, facilitating subsequent welding operations. This eliminates the need for manual welding of the welding rod 14, ensuring welding quality. The electric push rod 27 is activated, causing the push bars 26 on both sides to move away from each other. The push bars 26 on both sides push the drive plates 22 on both sides to slide along the inclined slide groove 24 on the fixed frame 23, compressing the spring 25. The drive plate 22 drives the push bar 21 to move towards the welding rod 14 until it is completely in contact with the welding rod 14. This facilitates the flattening of the welding rod 14 on the movable frame 13, preventing the welding rod 14 from shifting when it contacts the welding area of ​​the battery cell assembly, thus ensuring the welding quality of the battery cell assembly. The starting motor 32 drives the gear 31 to rotate, and the gear 31 drives the racks 30 on both sides to move away from each other. The racks 30 drive the elastic pressure strips 28 on both sides to move away from each other. After the flattening strip 21 flattens the position of the welding rod 14, the lower end of the elastic pressure strip 28 is in contact with the upper end of the welding rod 14. At the same time, the elastic pressure strip 28 is squeezed by the elastic plate 29, so that the elastic pressure strip 28 tightly abuts and presses against both ends of the welding rod 14, which helps to flatten both ends of the welding rod 14 and prevents the ends of the welding rod 14 from lifting up and creating gaps with the welding area of ​​the battery cell assembly, thereby improving the welding quality of the welding rod 14.

[0027] Working principle: The operator places multiple sets of battery cells to be welded between the movable plate 5 and the fixed plate 7. The hydraulic cylinder 2 is activated, pushing the spring 6, guide rod 4, and movable plate 5 to the left. Movable plate 5 pushes the battery cells towards fixed plate 7, allowing them to clamp together and prevent gaps during subsequent welding, thus improving welding quality. Simultaneously, push plate 3 drives the inclined plates 12 on both sides to move to the left. The spring 6 is self-compressible, preventing the movable plate 5 from applying rigid pressure to the battery cells after clamping them, which could damage the battery cells. The inclined plates 12 compress the connecting rod 9, causing it to move the two sides... The side plates 8 move closer to each other on the base plate 1, and the spring 11 is adaptively compressed until the horizontal plane of the inclined plates 12 on both sides contacts the connecting rod 9. At this point, the connecting rod 9 and the side plates 8 stop moving. The distance at which the side plates 8 stop moving is equal to the width of the battery pack, which is beneficial for clamping and positioning the front and rear sides of the battery pack. In conjunction with the movable plate 5 and the fixed plate 7, multiple battery packs can be clamped and positioned. This helps ensure that the subsequent welding position is kept on the same horizontal line as the welding rod 14, ensuring the quality of the welding. It also eliminates the need for manual adjustment and improves the efficiency of subsequent welding. When the side plates 8 on both sides move closer to each other, they also drive the guide rods 17, movable frame 13, welding rod 14 and inclined frame 19 on both sides to move together. As they approach each other, the inclined frame 19 will be blocked by the top rod 20, pushing the inclined frame 19, movable frame 13, and welding rod 14 to slide downwards on the guide rod 2 17, compressing the spring 4 18. When the side plates 8 on both sides stop moving, the lower end of the welding rod 14 contacts the welding area at the upper end of the battery pack, facilitating subsequent welding operations and eliminating the need for manual welding of the welding rod 14, thus ensuring welding quality. The electric push rod 27 is activated, causing the push bars 26 on both sides to move away from each other. The push bars 26 push the drive plates 22 on both sides to slide along the inclined slide groove 24 on the fixed frame 23, compressing the spring 5 25. The drive plate 22 drives the flattening bar 21 to move towards the welding rod 14 until it is completely in contact with the welding rod 14, which helps to flatten the welding rod 14 on the movable frame 13 and avoids... When the welding rod 14 comes into contact with the welding area of ​​the battery cell assembly, it shifts, ensuring the welding quality of the battery cell assembly. The starting motor 32 drives the gear 31 to rotate, and the gear 31 drives the racks 30 on both sides to move away from each other. The racks 30 drive the elastic pressure strips 28 on both sides to move away from each other. After the flattening strip 21 flattens the position of the welding rod 14, the lower end of the elastic pressure strip 28 is in contact with the upper end of the welding rod 14. At the same time, the elastic pressure strip 28 is squeezed by the elastic plate 29, so that the elastic pressure strip 28 tightly abuts and adheres to both ends of the welding rod 14. This helps to flatten both ends of the welding rod 14 and prevents the ends of the welding rod 14 from lifting up and creating gaps with the welding area of ​​the battery cell assembly, thus improving the welding quality of the welding rod 14.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preheatable battery cell welding machine, comprising a base plate (1): characterized in that, A hydraulic cylinder (2) is fixedly installed on the upper right side of the base plate (1); A positioning mechanism is also provided for positioning and clamping the battery pack on the base plate (1). The positioning mechanism includes a push plate (3) that is slidably installed on the upper end of the base plate (1). The right end of the push plate (3) is fixedly connected to the hydraulic cylinder (2). A movable plate (5) is provided on the left side of the push plate (3). The lower end of the movable plate (5) is slidably installed on the base plate (1). A fixed plate (7) is fixedly installed on the upper end of the base plate (1) on the left side of the movable plate (5). Side plates (8) are symmetrically slidably installed on the upper end of the base plate (1). A welding mechanism for welding the battery cell pack on the base plate (1) is also provided. The welding mechanism includes a movable frame (13) symmetrically arranged on the upper side of the side plate (8). Welding rods (14) are placed on the movable frame (13) at the ends that are close to each other. Clamping plates (15) are slidably installed on the movable frame (13) corresponding to the welding rods (14). The clamping plates (15) are all provided with inclined surfaces at the ends that are close to each other. Springs (16) are fixedly installed on the upper end of the clamping plates (15). The upper end of the springs (16) is fixedly installed on the movable frame (13).

2. The preheatable battery cell welding machine according to claim 1, characterized in that, The right end of the movable plate (5) is fixedly installed with a guide rod (4). The right end of the guide rod (4) is slidably installed on the push plate (3). A spring (6) is sleeved on the outside of the guide rod (4). The left and right ends of the spring (6) are fixedly installed on the movable plate (5) and the push plate (3) respectively.

3. The preheatable battery cell welding machine according to claim 1, characterized in that, A connecting rod (9) is fixedly installed at the ends of the two side plates (8) that are far apart from each other. A vertical plate (10) is slidably installed through the middle of the connecting rod (9). The lower end of the vertical plate (10) is fixedly installed on the base plate (1).

4. The preheatable battery cell welding machine according to claim 3, characterized in that, Spring 2 (11) is sleeved on the outer side of each connecting rod (9). The two ends of spring 2 (11) are fixedly connected to the vertical plate (10) and the connecting rod (9) respectively. Inclined block plates (12) are fixedly installed on the front and rear ends of the push plate (3) corresponding to the connecting rod (9).

5. A preheatable battery cell welding machine according to claim 1, characterized in that, The upper end of each side plate (8) is fixedly installed with a guide rod two (17). The upper end of the guide rod two (17) is slidably installed on the movable frame (13) on both sides. The outer side of each guide rod two (17) is fitted with a spring four (18). The upper end of each movable frame (13) is fixedly installed with a slope frame (19), and the upper end of the vertical plate (10) is fixedly installed with a top rod (20) corresponding to the slope frame (19).

6. The preheatable battery cell welding machine according to claim 1, characterized in that, Each of the welding rods (14) has a pusher bar (21) on the upper part of the side that is close to each other. A drive plate (22) is fixedly installed on the upper end of each pusher bar (21). A fixing bracket (23) is slidably installed on the left end of the drive plate (22).

7. A preheatable battery cell welding machine according to claim 6, characterized in that, The fixed frame (23) has an inclined slide groove (24) corresponding to the drive plate (22). The ends of the fixed frame (23) that are far apart from each other are fixedly connected to the inclined frame (19). A spring five (25) is fixedly installed between the drive plate (22) and the fixed frame (23).

8. A preheatable battery cell welding machine according to claim 6, characterized in that, The drive plates (22) are provided with push bars (26) at their close ends and electric push rods (27) are fixedly installed at their far ends. The far ends of the electric push rods (27) are fixedly connected to the fixing frame (23).

9. A preheatable battery cell welding machine according to claim 6, characterized in that, Elastic pressure strips (28) are slidably installed on both the left and right sides of the upper end of the pusher strip (21), and an elastic plate (29) is fixedly installed on the upper end of the movable frame (13) corresponding to the elastic pressure strips (28).

10. A preheatable battery cell welding machine according to claim 9, characterized in that, Each of the elastic pressure strips (28) has a rack (30) fixedly installed at one end close to the other. A gear (31) meshes between the racks (30). A motor (32) is provided at the upper end of the gear (31). The upper end of the motor (32) is fixedly connected to the drive plate (22).

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