A resistance welding device for aerospace lithium battery electrode sheets

Abstract

This utility model discloses a resistance welding device for aviation lithium battery electrode sheets, belonging to the technical field of resistance welding devices. It includes a frame with guide hole structures; a welding assembly comprising electrode rod one, electrode rod two, and a handheld pressure block; electrode rod one and electrode rod two are parallel and opposite each other, arranged along the height direction of the frame, with their lower ends serving as welding electrode heads; both electrode rod one and electrode rod two pass through the guide hole structures and can be raised and lowered along the height direction of the frame, and their positions can be adjusted within the guide hole structures along their relative directions; the handheld pressure block connects electrode rod one and electrode rod two to form a handheld part capable of driving electrode rod one and electrode rod two to rise and fall; and a positioning support rod is vertically fixed to the bottom surface of the frame. This utility model can flexibly adjust the welding point spacing, effectively meeting the resistance welding requirements of aviation lithium battery electrode sheets and thin-walled components, improving product welding efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the technical field of wooden barrel processing equipment, and in particular to a resistance welding device for electrode sheets of aviation lithium batteries. Background Technology

[0002] In the field of lithium battery electrode welding, mature welding processes exist for welding battery electrode sheets in batches and of fixed sizes. However, there are currently no efficient solutions for resistance welding of aerospace lithium batteries, which have varying shapes and specifications, and are produced individually or in small batches, as well as for maintenance services. Furthermore, the welding process remains challenging, inefficient, and suffers from inconsistent weld quality. Therefore, it is necessary to design and develop specialized welding equipment to meet the resistance welding requirements of aerospace lithium battery electrode sheets.

[0003] Therefore, how to provide a resistance welding device for aviation lithium battery electrode sheets that can flexibly adjust the welding point spacing, effectively meet the resistance welding requirements of aviation lithium battery electrode sheets and thin-walled components, improve product welding efficiency, and ensure reliable and stable welding quality is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention proposes a resistance welding device for electrode sheets of aviation lithium batteries, which aims to solve the technical problem that traditional resistance welding devices cannot effectively adapt to the welding needs of lithium batteries that are not produced in large batches and have diverse specifications and shapes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a resistance welding device for electrode sheets of aviation lithium batteries, comprising:

[0007] The frame is provided with guide hole structure;

[0008] A welding assembly includes an electrode rod one, an electrode rod two, and a handheld pressure block. The electrode rod one and the electrode rod two are parallel to each other and arranged along the height direction of the frame. The lower ends of both the electrode rod one and the electrode rod two extend to the lower part of the corresponding frame to serve as welding electrode heads. Both the electrode rod one and the electrode rod two are inserted into the guide hole structure and can be raised and lowered along the height direction of the frame. Both can also be adjusted in the guide hole structure along the relative directions of the electrode rod one and the electrode rod two to change the welding point spacing. The handheld pressure block connects the electrode rod one and the electrode rod two to form a handheld part that can drive the electrode rod one and the electrode rod two to rise and fall.

[0009] A positioning support rod, the upper end of which is vertically fixed to the bottom surface of the frame and corresponds to the electrode rod one and the electrode rod two.

[0010] This utility model discloses a resistance welding device for aviation lithium battery electrode sheets. In use, the electrode output end of a traditional resistance welding device is electrically connected to electrode rod one and electrode rod two for power supply. The user holds a hand-held pressure block and presses the lower end of the positioning support rod against the vicinity of the welding position for positioning. Pressing down the hand-held pressure block causes electrode rod one and electrode rod two to slide down and contact the welding point for welding. By sliding and adjusting the distance between electrode rod one and electrode rod two, the welding point spacing can be flexibly changed to adapt to the diverse welding positions of the positive and negative electrodes of the electrode sheet. Therefore, this utility model can effectively adapt to the welding needs of lithium batteries with non-batch production, diverse specifications, and varied shapes, as well as repair welding needs. It can also be widely applied to resistance welding of thin-walled components.

[0011] As a further improvement to the above technical solution, the frame includes an upper connecting plate, a lower connecting plate, and a connecting column assembly; the upper connecting plate and the lower connecting plate are opposite to each other and spaced apart; the upper end of the connecting column assembly is fixedly connected to the upper connecting plate, and the lower end of the connecting column assembly is fixedly connected to the lower connecting plate;

[0012] The upper connecting plate has a strip-shaped through hole one and a strip-shaped through hole two along its length direction; the strip-shaped through hole one and the strip-shaped through hole two are arranged at intervals along the length direction of the upper connecting plate; the lower connecting plate has a strip-shaped through hole three and a strip-shaped through hole four corresponding to the strip-shaped through hole one and the strip-shaped through hole two respectively.

[0013] The first electrode rod is movably inserted through the first and third strip-shaped through holes and can slide and adjust along the length direction of the first and third strip-shaped through holes; the second electrode rod is movably inserted through the second and fourth strip-shaped through holes and can slide and adjust along the length direction of the second and fourth strip-shaped through holes.

[0014] The beneficial effects of the above technical solution are: the upper plate and the lower plate are connected by the connecting column group to form a stable retainer structure; the first and third strip through holes can guide the first electrode rod to move up and down along the height direction of the frame, and the second and fourth strip through holes can guide the second electrode rod to move up and down along the height direction of the frame, and can realize the adjustment of the welding point spacing by guiding the electrode rods in the opposite direction of the first and second electrode rods.

[0015] As a further improvement to the above technical solution, the upper connecting plate is provided with a limiting component one for restricting the sliding of electrode rod one and electrode rod two along the length direction of the upper connecting plate; the lower connecting plate is provided with a limiting component two for restricting the sliding of electrode rod one and electrode rod two along the length direction of the upper connecting plate.

[0016] The beneficial effect of the above technical solution is that by limiting the upper and lower distances of electrode rod 1 and electrode rod 2 respectively by limiting component 1 and limiting component 2, the stability of the welding distance is ensured.

[0017] As a further improvement to the above technical solution, the outer sidewalls of electrode rod one and electrode rod two perpendicular to their respective directions are provided with limiting grooves along their length. One end of limiting component one and limiting component two can be movably inserted into the limiting grooves of electrode rod one and electrode rod two to restrict the sliding of electrode rod one and electrode rod two along their respective directions.

[0018] The beneficial effect of the above technical solution is that one end of the limiting component one and the limiting component two are stuck in the limiting groove of the electrode rod one and the electrode rod two, ensuring that the distance between the electrode rod one and the electrode rod two is stable without restricting their lifting and lowering movements.

[0019] As a further improvement to the above technical solution, the sidewall of the upper connecting plate in the width direction is provided with a plurality of threaded through holes one corresponding to one of the strip-shaped through holes, and the plurality of threaded through holes one are arranged at intervals along the length direction of the strip-shaped through holes one; the sidewall of the upper connecting plate in the width direction is provided with a plurality of threaded through holes two corresponding to one of the strip-shaped through holes, and the plurality of threaded through holes two are arranged at intervals along the length direction of the strip-shaped through holes two; the sidewall of the lower connecting plate in the width direction is provided with a plurality of threaded through holes three corresponding to one of the strip-shaped through holes, and the plurality of threaded through holes three are arranged at intervals along the length direction of the strip-shaped through holes three; the sidewall of the lower connecting plate in the width direction is provided with a plurality of threaded through holes four corresponding to one of the strip-shaped through holes, and the plurality of threaded through holes four are arranged at intervals along the length direction of the strip-shaped through holes four.

[0020] Both the limiting component one and the limiting component two include multiple limiting screws; the limiting screws are screwed into and pass through the threaded through hole one, the threaded through hole two, the threaded through hole three and the threaded through hole four.

[0021] The beneficial effects of the above technical solution are as follows: In use, one end of the limiting screw can be screwed into threaded through holes one, two, three and four, and then into the corresponding strip through holes one, two, three and four, and extended into the limiting grooves of the corresponding electrode rod one and electrode rod two for lateral limiting; by changing the mounting hole position of the limiting screw, the distance between electrode rod one and electrode rod two can be adjusted, thereby adapting to the welding point spacing requirements of the workpiece to be welded.

[0022] As a further improvement to the above technical solution, the handheld pressure block is located between the upper connecting plate and the lower connecting plate; the top surface of the handheld pressure block has a five-strip through hole corresponding to one of the strip through holes, and a six-strip through hole corresponding to the second strip through hole; the outer wall of the handheld pressure block perpendicular to the direction opposite to the first and second electrode rods has a first strip hole corresponding to the fifth strip through hole, and a second strip hole corresponding to the sixth strip through hole; the length directions of the fifth strip through hole, the sixth strip through hole, the first strip hole, and the second strip hole are all along the direction opposite to the first and second electrode rods.

[0023] A first actuating plate is fixed to the middle of the first electrode rod, and a second actuating plate is fixed to the middle of the second electrode rod; the middle of the first electrode rod is slidably connected to the fifth strip-shaped through hole along the length direction of the fifth strip-shaped through hole, and the first actuating plate is slidably connected to the first strip-shaped hole along the length direction of the first strip-shaped hole; the middle of the second electrode rod is slidably connected to the sixth strip-shaped through hole along the length direction of the sixth strip-shaped through hole, and the second actuating plate is slidably connected to the second strip-shaped through hole along the length direction of the second strip-shaped hole.

[0024] The beneficial effects of the above technical solution are as follows: When in use, the hand-held pressure block is pressed down or raised. The hand-held pressure block drives the electrode rods one and two to rise and fall synchronously through the actuating plate one and actuating plate two. When adjusting the distance between electrode rods one and two, electrode rods one and two slide laterally in the strip-shaped through hole five and strip-shaped through hole six, respectively. The actuating plate one and actuating plate two slide laterally in the strip-shaped hole one and strip-shaped hole two, respectively, so as not to restrict the adjustment of the distance between electrode rods one and two.

[0025] As a further improvement to the above technical solution, a guide through hole is provided between the upper connecting plate and the strip through hole one and the strip through hole two; a guide rod is vertically fixed in the middle of the top surface of the hand-held pressure block, and the upper end of the guide rod moves through the guide through hole.

[0026] The beneficial effects of the above technical solution are: the guide rod plays the role of vertically guiding the hand holding the pressure block, which makes the downward welding operation smoother and more stable.

[0027] As a further improvement to the above technical solution, the upper end of the guide rod has an external thread of a preset length, and the upper end of the guide rod is adapted to be connected to a limit nut.

[0028] The beneficial effects of the above technical solution are as follows: by adjusting the tightness of the limiting nut at the upper end of the guide rod, the pressing depth and welding force of the hand-held pressure block can be limited. Before operation, the position of the limiting nut is adjusted and positioned, and the hand-held pressure block is pressed down until the limiting nut abuts against the surface of the upper connecting plate. This ensures that the depth of each weld is consistent and that the contact pressure between the welding electrode head and the electrode sheet or thin-walled part is constant, thereby ensuring stable and reliable welding quality.

[0029] As a further improvement to the above technical solution, the welding assembly also includes a return spring, the upper end of which abuts against the bottom surface of the hand-held pressure block, and the lower end of which abuts against the surface of the lower connecting plate.

[0030] The beneficial effects of the above technical solution are: the reset spring plays the role of resetting the hand-held pressure block. After each pressing welding operation is completed, the reset spring can drive the hand-held pressure block to automatically reset upward and disengage from the welding part. Through the spring damping effect, the welding operation also has a certain feel.

[0031] As a further improvement to the above technical solution, the upper ends of electrode rod one and electrode rod two extend to the upper part of the corresponding frame; the outer peripheral walls of the upper ends of electrode rod one and electrode rod two are provided with electrode connection holes for electrically connecting resistance welding equipment.

[0032] The beneficial effects of the above technical solution are: the electrode connection holes at the upper ends of electrode rod one and electrode rod two can be connected to the electrodes of the resistance welding equipment through wires to obtain welding power.

[0033] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a resistance welding device for electrode sheets of aviation lithium batteries, which has the following advantages and beneficial effects:

[0034] 1. This utility model addresses the current demand for resistance welding of aviation lithium batteries with varying shapes and not produced in batches, as well as the needs of maintenance operations. Based on traditional resistance welding equipment, a special device has been designed and developed for the resistance welding of electrode sheets for aviation lithium batteries. It achieves fixed adjustment of weld point spacing and stable control of welding pressure, meeting the resistance welding requirements of aviation lithium battery electrode sheets and thin-walled components. It solidifies the welding process, simplifies operation, and is of great significance for improving the welding quality of products.

[0035] 2. This utility model is not limited to resistance welding of electrode connecting pieces for aviation lithium batteries. All thin-walled resistance welding needs can be met by using this device and welding method. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This utility model presents a three-dimensional schematic diagram of the overall structure of a resistance welding device for electrode sheets of aviation lithium batteries.

[0038] Figure 2 This utility model discloses an exploded view of the frame of a resistance welding device for electrode sheets of aviation lithium batteries.

[0039] Figure 3 This utility model discloses a schematic diagram of the upper connecting plate structure of a resistance welding device for aviation lithium battery electrode sheets.

[0040] Figure 4 This utility model discloses a schematic diagram of the connecting column structure of a resistance welding device for aviation lithium battery electrode sheets;

[0041] Figure 5 This utility model discloses a schematic diagram of the lower connecting plate structure of a resistance welding device for aviation lithium battery electrode sheets.

[0042] Figure 6 This utility model discloses an exploded view of the welding assembly of a resistance welding device for aviation lithium battery electrode sheets.

[0043] Figure 7 This utility model discloses a handheld pressure block structure for a resistance welding device for aviation lithium battery electrode sheets.

[0044] In the diagram: 1. Frame; 11. Upper connecting plate; 111. Strip through hole one; 112. Strip through hole two; 113. Limiting component one; 114. Threaded through hole one; 115. Threaded through hole two; 116. Guide through hole; 12. Lower connecting plate; 121. Strip through hole three; 122. Strip through hole four; 123. Limiting component two; 124. Threaded through hole three; 125. Threaded through hole four; 126. Spring support one; 13. Connecting column assembly; 131. Connecting column; 2. Welding components; 21. Electrode rod one; 211. Actuating plate one; 212. Limiting groove one; 22. Electrode rod two; 221. Actuating plate two; 222. Limiting groove two; 23. Hand-held pressure block; 231. Strip-shaped through hole five; 232. Strip-shaped through hole six; 233. Strip-shaped hole one; 234. Strip-shaped hole two; 235. Guide rod; 2351. Scale line; 236. Limiting nut; 237. Spring support two; 24. Return spring; 3. Positioning support rod. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] According to the embodiments of this utility model, such as Figures 1 to 7 As shown, a resistance welding device for electrode sheets of aviation lithium batteries includes: a frame 1, a welding assembly 2, and a positioning support rod 3.

[0050] The frame 1 is provided with a guide hole structure; the welding assembly 2 includes an electrode rod 21, an electrode rod 22 and a handheld pressure block 23; the electrode rod 21 and the electrode rod 22 are parallel to each other and arranged along the height direction of the frame 1, and the lower ends of the electrode rod 21 and the electrode rod 22 extend to the bottom of the corresponding frame 1 to serve as welding electrode heads; the electrode rod 21 and the electrode rod 22 are both inserted into the guide hole structure and can be raised and lowered along the height direction of the frame 1, and can be adjusted in the guide hole structure along the relative direction of the electrode rod 21 and the electrode rod 22 to change the welding point spacing; the handheld pressure block 23 connects the electrode rod 21 and the electrode rod 22 to form a handheld part that can drive the electrode rod 21 and the electrode rod 22 to rise and fall.

[0051] The upper end of the positioning support rod 3 is vertically fixed to the bottom surface of the frame 1 and corresponds to the electrode rod 21 and electrode rod 22.

[0052] In this embodiment, a resistance welding device for aviation lithium battery electrode sheets is used by electrically connecting electrode rod 21 and electrode rod 22 to the electrode output end of a conventional resistance welding device for power supply. The user holds a hand-held pressure block 23 and presses the lower end of the positioning support rod 3 against the vicinity of the position to be welded for positioning. Pressing down the hand-held pressure block 23 causes electrode rod 21 and electrode rod 22 to slide down and abut against the welding point for welding. By sliding and adjusting the distance between electrode rod 21 and electrode rod 22, the welding point spacing can be flexibly changed to adapt to the diverse requirements of the positive and negative electrode welding positions of the electrode sheet. Thus, this utility model can effectively adapt to the welding needs of lithium batteries with non-batch production, diverse specifications, and different shapes, as well as maintenance welding needs. It can also be widely used in the resistance welding of thin-walled parts.

[0053] Specifically, both electrode rod 21 and electrode rod 22 are made of pure copper square rods, and their lower ends are sharpened into pointed tips according to the requirements of the welding points.

[0054] In some embodiments, the frame 1 includes an upper connecting plate 11, a lower connecting plate 12, and a connecting column group 13; the upper connecting plate 11 and the lower connecting plate 12 are opposite to each other and spaced apart; the upper end of the connecting column group 13 is fixedly connected to the upper connecting plate 11, and the lower end of the connecting column group 13 is fixedly connected to the lower connecting plate 12.

[0055] The upper connecting plate 11 has a strip-shaped through hole 111 and a strip-shaped through hole 112 along its length; the strip-shaped through holes 111 and 112 are arranged at intervals along the length of the upper connecting plate 11; the lower connecting plate 12 has a strip-shaped through hole 3 121 and a strip-shaped through hole 4 122 at the corresponding positions of the strip-shaped through holes 111 and 112.

[0056] Electrode rod 1 21 is movably inserted into strip-shaped through hole 111 and strip-shaped through hole 3 121 and can be slidably adjusted along the length direction of strip-shaped through hole 111 and strip-shaped through hole 3 121; Electrode rod 2 22 is movably inserted into strip-shaped through hole 2 112 and strip-shaped through hole 4 122 and can be slidably adjusted along the length direction of strip-shaped through hole 2 112 and strip-shaped through hole 4 122.

[0057] The upper connecting plate 11 and the lower connecting plate 12 are connected by the connecting column group 13 to form a stable retainer structure; the first strip through hole 111 and the third strip through hole 121 can guide the first electrode rod 21 to move up and down along the height direction of the frame 1, and the second strip through hole 112 and the fourth strip through hole 122 can guide the second electrode rod 22 to move up and down along the height direction of the frame 1, and can realize the adjustment of the welding point spacing by guiding the first electrode rod 21 and the second electrode rod 22 in the opposite direction.

[0058] Specifically, the connecting column assembly 13 includes four connecting columns 131; both ends of the connecting columns 131 are machined with external threads, and the four corners of the upper connecting plate 11 and the lower connecting plate 12 are provided with mounting holes. The two ends of the connecting columns 131 pass through the corresponding mounting holes of the upper connecting plate 11 and the lower connecting plate 12 respectively and are fastened with nuts to secure the upper connecting plate 11 and the lower connecting plate 12 together.

[0059] In some embodiments, the upper connecting plate 11 is provided with a limiting component 113 for restricting the sliding of electrode rod 21 and electrode rod 22 along the length direction of the upper connecting plate 11; the lower connecting plate 12 is provided with a limiting component 123 for restricting the sliding of electrode rod 21 and electrode rod 22 along the length direction of the upper connecting plate 11.

[0060] The upper and lower distances of electrode rod 21 and electrode rod 22 are limited by limiting component 113 and limiting component 22 respectively, thus ensuring the stability of the welding distance.

[0061] In some embodiments, the outer sidewalls of electrode rod 1 21 and electrode rod 22 perpendicular to their opposite directions are provided with limiting grooves along their length. One end of limiting component 113 and limiting component 223 can be movably inserted into the limiting grooves of electrode rod 1 21 and electrode rod 22 to restrict electrode rod 1 21 and electrode rod 22 from sliding in their opposite directions.

[0062] One end of the limiting component 113 and the limiting component 213 are engaged in the limiting grooves of the electrode rod 121 and the electrode rod 22, ensuring that the distance between the electrode rod 121 and the electrode rod 22 is stable without restricting their lifting and lowering movements.

[0063] In some embodiments, the sidewall of the upper connecting plate 11 in the width direction is provided with a plurality of threaded through holes 114 at the corresponding slotted through hole 111, and the plurality of threaded through holes 114 are spaced apart along the length direction of the slotted through hole 111; the sidewall of the upper connecting plate 11 in the width direction is provided with a plurality of threaded through holes 115 at the corresponding slotted through hole 112, and the plurality of threaded through holes 115 are spaced apart along the length direction of the slotted through hole 112; the sidewall of the lower connecting plate 12 in the width direction is provided with a plurality of threaded through holes 124 at the corresponding slotted through hole 121, and the plurality of threaded through holes 124 are spaced apart along the length direction of the slotted through hole 121; the sidewall of the lower connecting plate 12 in the width direction is provided with a plurality of threaded through holes 125 at the corresponding slotted through hole 122, and the plurality of threaded through holes 125 are spaced apart along the length direction of the slotted through hole 122.

[0064] Both limit component 113 and limit component 2123 include multiple limit screws; limit screws are screwed into and pass through threaded through holes 114, 115, 124, and 125.

[0065] In use, one end of the limiting screw can be screwed into threaded through holes 114, 115, 124, and 125, and then into the corresponding strip through holes 111, 112, 121, and 122, and extended into the limiting grooves of the corresponding electrode rods 21 and 22 for lateral limiting. By changing the mounting hole position of the limiting screw, the distance between electrode rods 21 and 22 can be adjusted to adapt to the welding point spacing requirements of the workpiece to be welded.

[0066] Specifically, a limiting groove 212 is formed on the outer wall of electrode rod 21 along its length, and a limiting groove 222 is formed on the outer wall of electrode rod 22 along its length. The front end of the limiting screw can be adapted to be screwed into either limiting groove 212 or limiting groove 222. The front end of the limiting screw can be designed with a cylindrical head to ensure smooth sliding of electrode rod 21 and electrode rod 22.

[0067] In some embodiments, the handheld pressure block 23 is located between the upper connecting plate 11 and the lower connecting plate 12; a strip-shaped through hole 231 is provided on the top surface of the handheld pressure block 23 at the location corresponding to the first strip-shaped through hole 111, and a strip-shaped through hole 232 is provided at the location corresponding to the second strip-shaped through hole 112; a strip-shaped hole 233 is provided on the outer side wall of the handheld pressure block 23 perpendicular to the direction opposite to the first electrode rod 21 and the second electrode rod 22, corresponding to the location corresponding to the fifth strip-shaped through hole 231, and a strip-shaped hole 234 is provided at the location corresponding to the sixth strip-shaped through hole 232, connecting the sixth strip-shaped through hole 232; the length directions of the fifth strip-shaped through hole 231, the sixth strip-shaped through hole 232, the first strip-shaped through hole 233, and the second strip-shaped through hole 234 are all along the direction opposite to the first electrode rod 21 and the second electrode rod 22;

[0068] A toggle plate 211 is fixed in the middle of electrode rod 21, and a toggle plate 221 is fixed in the middle of electrode rod 22. The middle part of electrode rod 21 is slidably connected to the strip-shaped through hole 231 along the length direction of the strip-shaped through hole 231, and the toggle plate 211 is slidably connected to the strip-shaped hole 233 along the length direction of the strip-shaped hole 233. The middle part of electrode rod 22 is slidably connected to the strip-shaped through hole 232 along the length direction of the strip-shaped through hole 232, and the toggle plate 221 is slidably connected to the strip-shaped hole 234 along the length direction of the strip-shaped hole 234.

[0069] In use, the hand-held pressure block 23 is pressed down or raised. The hand-held pressure block 23 drives the electrode rods 21 and 22 to rise and fall synchronously through the actuating plate 1 211 and the actuating plate 221. When adjusting the distance between the electrode rods 21 and 22, the electrode rods 21 and 22 slide laterally in the strip-shaped through hole 5 231 and the strip-shaped through hole 6 232, respectively. The actuating plate 1 211 and the actuating plate 221 slide laterally in the strip-shaped hole 1 233 and the strip-shaped hole 234, respectively, so as not to restrict the adjustment of the distance between the electrode rods 21 and 22.

[0070] Specifically, the handheld pressure block 23 is a rectangular block. A raised strip is integrally connected to the middle of the outer wall of the handheld pressure block 23 in the direction opposite to the first electrode rod 21 and the second electrode rod 22 to form a handle structure, making it easier to hold. The first actuating plate 211 and the second actuating plate 221 are both annular square plates, integrally connected or welded to the first electrode rod 21 and the second electrode rod 22, respectively.

[0071] In some embodiments, a guide through hole 116 is provided between the upper connecting plate 11 and the corresponding strip through hole 111 and strip through hole 112; a guide rod 235 is vertically fixed in the middle of the top surface of the hand-held pressure block 23, and the upper end of the guide rod 235 moves through the guide through hole 116.

[0072] The guide rod 235 serves to vertically guide the handheld pressure block 23, making the downward welding operation smoother and more stable. The guide rod 235, together with electrode rod 1 21 and electrode rod 22, constrains the handheld pressure block 23, retaining only the vertical freedom of the handheld pressure block 23.

[0073] In some embodiments, the inner sidewalls of the five through holes 231, the six through holes 232, the first through hole 233, and the second through hole 234 away from the guide through hole 116 are all open to form an open groove structure, which facilitates assembly.

[0074] In some embodiments, the upper end of the guide rod 235 has an external thread of a preset length, and the upper end of the guide rod 235 is adapted to be connected to a limit nut 236.

[0075] By adjusting the tightness of the limiting nut 236 at the upper end of the guide rod 235, the pressing depth and welding force of the hand-held pressure block 23 can be limited. Before operation, adjust and position the limiting nut 236, and press down the hand-held pressure block 23 until the limiting nut 236 abuts against the upper plate surface of the upper connecting plate 11. This ensures that the welding depth is consistent each time and that the contact pressure between the welding electrode head and the electrode sheet or thin-walled part is constant, thereby ensuring stable and reliable welding quality.

[0076] Specifically, a fastening nut is screwed onto the upper end of the guide rod 235 on the side of the limit nut 236 away from the hand-held pressure block 23. The fastening nut and the limit nut 236 are tightened together to fasten the limit nut 236 onto the guide rod 235.

[0077] In some embodiments, the upper end of the guide rod 235 is designed with a scale line 2351 along the length direction.

[0078] In some embodiments, the welding assembly 2 further includes a reset spring 24, the upper end of which abuts against the bottom surface of the hand-held pressure block 23, and the lower end of which abuts against the upper surface of the lower connecting plate 12.

[0079] The reset spring 24 serves to reset the hand-held pressure block 23. After each pressing welding operation is completed, the reset spring 24 can drive the hand-held pressure block 23 to automatically reset upward and disengage from the welding part. Through the spring damping effect, the welding operation also has a certain feel.

[0080] Specifically, the upper surface of the lower connecting plate 12 is integrally connected to a spring support 126, and the bottom surface of the hand-held pressure block 23 is integrally connected to a spring support 237. The upper and lower ends of the reset spring 24 are respectively fastened to the spring support 237 and the spring support 126 by screws.

[0081] In some embodiments, the lower connecting plate 12 is heavier than the upper connecting plate 11, so that the overall design of the device is bottom-heavy and top-light, which facilitates natural drooping during welding, improves the feel of use, makes it easy to hold stably, and has a simple structural design and is easy to operate.

[0082] Specifically, both the upper connecting plate 11 and the lower connecting plate 12 are rectangular, with the same length and width; the lower connecting plate 12 is thicker than the upper connecting plate 11 to achieve the effect of increasing weight.

[0083] Specifically, both the upper connecting plate 11 and the lower connecting plate 12 are made of rigid insulating nylon material; the connecting post 131 is made of high-strength aluminum alloy. The hand-held pressure block 23 is made of rigid insulating nylon material.

[0084] In some embodiments, the upper ends of electrode rod 1 21 and electrode rod 22 extend above the corresponding frame 1; the outer peripheral walls of the upper ends of electrode rod 1 21 and electrode rod 22 are provided with electrode connection holes for electrically connecting to the resistance welding equipment.

[0085] The electrode connection holes at the upper ends of electrode rod 1 21 and electrode rod 2 22 can be connected to the electrodes of the resistance welding equipment through wires to obtain welding power.

[0086] A resistance welding method for electrode sheets used in aviation lithium batteries, employing a resistance welding apparatus for aviation lithium battery electrode sheets, includes the following steps:

[0087] Step 1: According to the welding requirements, determine the welding spacing and adjust the distance between electrode rod 1 21 and electrode rod 22 so that the distance between the welding electrode heads is the welding spacing; select suitable threaded through holes 114 and 124, 115 and 125, and screw in the limit screws to horizontally position electrode rod 1 21 and electrode rod 22.

[0088] Step 2: Connect the two electrodes of the traditional resistance welding equipment to the electrode connection holes of electrode rod 1 21 and electrode rod 22 respectively using wires; loosen the limit nut 236 at the top of the device, adjust the corresponding current output of the resistance welding equipment, and first perform the test on the sample. Use the lower end of the positioning support rod 3 to press down on the sample, and hold the handle of the hand pressure block 23 by hand to press down. After the welding quality is achieved, record the scale value at the upper end of the guide rod 235, and lock the limit nut 236 to the scale position. The device debugging is now complete, and welding can be performed.

[0089] Step 3: Use the lower end of the positioning support rod 3 to press against the welding position of the workpiece to be welded (e.g., lithium battery electrode connecting piece) and position it. Hold the handle of the hand-held pressure block 23 and press it down. The top limiting nut 236 will limit the sliding distance of electrode rod 1 21 and electrode rod 22 according to the welding quality of the test, thereby achieving uniform welding quality and improving welding efficiency.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0091] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A resistance welding apparatus for electrode sheets in aviation lithium batteries, characterized in that, include: The frame (1) is provided with a guide hole structure; Welding assembly (2), the welding assembly (2) includes electrode rod one (21), electrode rod two (22) and hand-held pressure block (23); the electrode rod one (21) and the electrode rod two (22) are parallel to each other and arranged along the height direction of the frame (1), the lower ends of the electrode rod one (21) and the electrode rod two (22) extend to the lower part of the corresponding frame (1) to serve as welding electrode heads; the electrode rod one (21) and the electrode rod two (22) are both inserted into the guide hole structure and can be raised and lowered along the height direction of the frame (1), and can be adjusted in the guide hole structure along the relative direction of the electrode rod one (21) and the electrode rod two (22) to change the welding point spacing; the hand-held pressure block (23) connects the electrode rod one (21) and the electrode rod two (22) to form a hand-held part that can drive the electrode rod one (21) and the electrode rod two (22) to rise and fall; Positioning support rod (3), the upper end of which is vertically fixed to the bottom surface of the frame (1) and corresponds to the electrode rod one (21) and the electrode rod two (22).

2. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 1, characterized in that, The frame (1) includes an upper connecting plate (11), a lower connecting plate (12), and a connecting column group (13); the upper connecting plate (11) and the lower connecting plate (12) are opposite to each other and arranged at intervals; the upper end of the connecting column group (13) is fixedly connected to the upper connecting plate (11), and the lower end of the connecting column group (13) is fixedly connected to the lower connecting plate (12); The upper connecting plate (11) has a strip-shaped through hole one (111) and a strip-shaped through hole two (112) along its length direction; the strip-shaped through hole one (111) and the strip-shaped through hole two (112) are arranged at intervals along the length direction of the upper connecting plate (11); the lower connecting plate (12) has a strip-shaped through hole three (121) and a strip-shaped through hole four (122) corresponding to the strip-shaped through hole one (111) and the strip-shaped through hole two (112) respectively; The first electrode rod (21) is movably inserted into the first strip-shaped through hole (111) and the third strip-shaped through hole (121) and can be slidably adjusted along the length direction of the first strip-shaped through hole (111) and the third strip-shaped through hole (121); the second electrode rod (22) is movably inserted into the second strip-shaped through hole (112) and the fourth strip-shaped through hole (122) and can be slidably adjusted along the length direction of the second strip-shaped through hole (112) and the fourth strip-shaped through hole (122).

3. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 2, characterized in that, The upper connecting plate (11) is provided with a limiting component 1 (113) for restricting the first electrode rod (21) and the second electrode rod (22) from sliding along the length direction of the upper connecting plate (11); the lower connecting plate (12) is provided with a limiting component 2 (123) for restricting the first electrode rod (21) and the second electrode rod (22) from sliding along the length direction of the upper connecting plate (11).

4. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 3, characterized in that, The outer side walls of electrode rod one (21) and electrode rod two (22) perpendicular to each other are provided with limiting grooves along their length. One end of limiting component one (113) and limiting component two (123) can be movably inserted into the limiting grooves of electrode rod one (21) and electrode rod two (22) to restrict the sliding of electrode rod one (21) and electrode rod two (22) along their relative directions.

5. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 4, characterized in that, The upper connecting plate (11) has multiple threaded through holes (114) on its sidewall in the width direction corresponding to the first strip through hole (111), and the multiple threaded through holes (114) are arranged at intervals along the length direction of the first strip through hole (111); the upper connecting plate (11) has multiple threaded through holes (115) on its sidewall in the width direction corresponding to the second strip through hole (112), and the multiple threaded through holes (115) are arranged at intervals along the length direction of the second strip through hole (112); The sidewall of the lower connecting plate (12) in the width direction is provided with a plurality of threaded through holes (124) corresponding to the strip through hole three (121), and the plurality of threaded through holes three (124) are arranged at intervals along the length direction of the strip through hole three (121); the sidewall of the lower connecting plate (12) in the width direction is provided with a plurality of threaded through holes four (125) corresponding to the strip through hole four (122), and the plurality of threaded through holes four (125) are arranged at intervals along the length direction of the strip through hole four (122); Both the first limiting component (113) and the second limiting component (123) include multiple limiting screws; the first threaded through hole (114), the second threaded through hole (115), the third threaded through hole (124) and the fourth threaded through hole (125) are all screwed and have the limiting screws passing through them.

6. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 2, characterized in that, The handheld pressure block (23) is located between the upper connecting plate (11) and the lower connecting plate (12); the top surface of the handheld pressure block (23) has a strip-shaped through hole five (231) corresponding to the strip-shaped through hole one (111), and a strip-shaped through hole six (232) corresponding to the strip-shaped through hole two (112); the outer side wall of the handheld pressure block (23) perpendicular to the direction opposite to the electrode rod one (21) and the electrode rod two (22) corresponds to the strip-shaped through hole five (231). A strip hole 1 (233) is provided at position 231 to connect with the strip hole 5 (231), and a strip hole 2 (234) is provided at position 6 (232) to connect with the strip hole 6 (232); the length directions of the strip hole 5 (231), the strip hole 6 (232), the strip hole 1 (233) and the strip hole 2 (234) are all along the opposite direction of the electrode rod 1 (21) and the electrode rod 2 (22); A first actuating plate (211) is fixed in the middle of the first electrode rod (21), and a second actuating plate (221) is fixed in the middle of the second electrode rod (22). The first electrode rod (21) is slidably connected to the fifth strip-shaped through hole (231) along the length direction of the fifth strip-shaped through hole (231), and the first actuating plate (211) is slidably connected to the first strip-shaped hole (233) along the length direction of the first strip-shaped hole (233). The second electrode rod (22) is slidably connected to the sixth strip-shaped through hole (232) along the length direction of the sixth strip-shaped through hole (232), and the second actuating plate (221) is slidably connected to the second strip-shaped hole (234) along the length direction of the second strip-shaped hole (234).

7. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 2, characterized in that, The upper connecting plate (11) has a guide through hole (116) between the strip through hole one (111) and the strip through hole two (112); the hand-held pressure block (23) has a guide rod (235) vertically fixed in the middle of its top surface, and the upper end of the guide rod (235) moves through the guide through hole (116).

8. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 7, characterized in that, The upper end of the guide rod (235) has an external thread of a preset length, and the upper end of the guide rod (235) is adapted to be connected to a limit nut (236) by a thread.

9. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 2, characterized in that, The welding assembly (2) also includes a reset spring (24), the upper end of which abuts against the bottom surface of the hand-held pressure block (23), and the lower end of which abuts against the upper surface of the lower connecting plate (12).

10. The resistance welding apparatus for aviation lithium battery electrode sheets according to claim 1, characterized in that, The upper ends of electrode rod one (21) and electrode rod two (22) extend above the corresponding frame (1); the outer peripheral walls of the upper ends of electrode rod one (21) and electrode rod two (22) are provided with electrode connection holes for electrically connecting resistance welding equipment.

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