An angle-adjustable square battery pole piece spot welding mechanism

Abstract

The utility model relates to square battery manufacturing technical field discloses a square battery pole piece spot welding mechanism of adjustable angle, including work table, the top wall right side of work table is installed with adjusting mechanism, the adjusting mechanism is used for adjusting the welding angle, the top wall left side of work table is installed with fixed mechanism, the fixed mechanism is used for fixing battery, the adjusting mechanism includes fixed plate, the fixed plate fixed connection in the top wall right side of work table, the inner wall sliding connection of fixed plate has the connecting block. In the utility model, when the connecting block moves left, the connecting rod will push the connecting plate, makes the connecting plate rotate left side on the top of fixed plate, and when the connecting block moves right, the connecting rod will pull the connecting plate, makes the connecting plate rotate right side on the top of fixed plate, can adjust the welding angle and range of the welding head on the top of connecting plate through the connecting block movement, prevents the welding angle fixed, leads to the battery false welding and welds through.

Description

Technical Field

[0001] This utility model relates to the field of square battery manufacturing technology, and in particular to a square battery electrode spot welding mechanism with adjustable angle. Background Technology

[0002] The square battery electrode spot welding mechanism is a core automated device that enables reliable conductive connection between the square power battery electrode and the tab / current collector. Through the principle of resistance spot welding, it completes the metallurgical bonding between the electrode and the tab, which directly affects the battery's conductivity, safety and cycle life.

[0003] In existing technologies, a robotic arm places the electrode and tab on a fixture and fixes them by vacuum adsorption. A vision camera captures the edge and hole position of the electrode, and feeds back the deviation value to the controller, which drives the fixture to fine-tune the alignment. A servo motor drives the electrode to descend and applies a preset pressure to the electrode-tab contact area to ensure tight contact. A high-frequency inverter outputs a large current, which forms a loop through the electrode-electrode-tab. The contact area is instantly heated to the melting point due to Joule heating, forming a tiny molten nucleus. After power is cut off, the electrode pressure is maintained, and the molten nucleus cools and solidifies under pressure to form a dense weld point. However, traditional trial welding methods require a large number of samples and cannot cover batch differences in materials. Currently, a deep reinforcement learning model is constructed. Inputting electrode material parameters and welding environment, it outputs the optimal current-time curve. However, the welding angle and range of the welding head are not adjustable. The fixed welding angle leads to poor welding and burn-through of the battery. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an adjustable-angle square battery electrode spot welding mechanism, which aims to improve the problems of non-adjustable welding angle and range of welding head in the prior art, and fixed welding angle, which leads to poor welding and burn-through of the battery.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable-angle square battery electrode spot welding mechanism, comprising a worktable, an adjustment mechanism installed on the right side of the top wall of the worktable for adjusting the welding angle, and a fixing mechanism installed on the left side of the top wall of the worktable for fixing the battery; the adjustment mechanism includes a fixing plate fixedly connected to the right side of the top wall of the worktable, a connecting block slidably connected to the inner wall of the fixing plate, a slider fixedly connected to the right side of the outer wall of the connecting block, a connecting rod rotatably connected to the upper part of the inner wall of the connecting block, and a driving assembly installed on the right side of the top wall of the fixing plate.

[0006] As a further description of the above technical solution:

[0007] The drive assembly includes a bracket, which is fixedly connected to the right side of the top wall of the fixed plate. A motor is fixedly connected to the top wall of the bracket, and a crank is fixedly connected to the output end of the motor. A hollow block is fixedly connected to the top wall of the slider, and the end of the crank is slidably connected to the inner wall of the hollow block.

[0008] As a further description of the above technical solution:

[0009] A connecting plate is rotatably connected to the left side of the top wall of the fixed plate, a welding head is installed on the top wall of the connecting plate, and the upper right side of the outer wall of the connecting plate is connected to the connecting rod.

[0010] As a further description of the above technical solution:

[0011] The fixing mechanism includes a fixing frame, which is fixedly connected to the inner bottom wall of the workbench. Fixing rods are rotatably connected to the left and right sides of the top wall of the fixing frame, and a transmission assembly is installed on the inner side of the fixing frame.

[0012] As a further description of the above technical solution:

[0013] The transmission assembly includes a hydraulic rod, which is fixedly connected to the inner wall of the fixed frame, and a fixing block is fixedly connected to the top end of the hydraulic rod.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the fixed block is rotatably connected to the left and right sides of the fixed block. The top of the support arm is fixedly connected to the clamping block, and the end of the support arm is rotatably connected to the inner wall of the fixed rod.

[0016] As a further description of the above technical solution:

[0017] A controller is installed on the outside of the workbench, and the controller is fixedly connected to the right side of the outer wall of the workbench.

[0018] As a further description of the above technical solution:

[0019] The controller is equipped with a display screen on its top, which is fixedly connected to the right side of the top wall of the controller.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when the motor is started, the motor drives the crank to rotate. After the crank rotates, the end of the crank slides inside the hollow block. Therefore, the crank will pull the hollow block, thereby driving the slider connected to the hollow block to slide inside the fixed plate. The slider will also drive the connecting block to move. When the connecting block moves to the left, the connecting rod will push the connecting plate, causing the connecting plate to rotate to the left at the top of the fixed plate. When the connecting block moves to the right, the connecting rod will pull the connecting plate, causing the connecting plate to rotate to the right at the top of the fixed plate. By moving the connecting block, the welding angle and range of the welding head at the top of the connecting plate can be adjusted to prevent the welding angle from being fixed, which would lead to poor soldering and burn-through of the battery.

[0022] 2. In this utility model, the hydraulic rod drives the fixed block to move up and down. When the fixed block moves upward, it pushes the support arm. Since the end of the support arm is connected to the fixed rod, when the fixed block moves upward, the fixed rod pulls the support arm. The support arm rotates to both sides inside the fixed block, causing the support arm and the clamping block to open. When the fixed block moves downward, the fixed rod generates the opposite force to push the support arm to rotate. The support arm drives the clamping block to close and clamp the battery, preventing the electrode sheets from tilting and shifting during the welding process. It can also be used for batteries of different sizes, improving applicability. Attached Figure Description

[0023] Figure 1 This is a perspective view of an adjustable-angle square battery electrode spot welding mechanism proposed in this utility model.

[0024] Figure 2 This is a front view of an adjustable-angle square battery electrode spot welding mechanism proposed in this utility model.

[0025] Figure 3 This is a side view of an adjustable-angle square battery electrode spot welding mechanism proposed in this utility model.

[0026] Figure 4 This is a partial structural schematic diagram of an adjustable-angle square battery electrode spot welding mechanism proposed in this utility model.

[0027] Figure 5 This is a partial structural exploded view of an adjustable-angle square battery electrode spot welding mechanism proposed in this utility model.

[0028] Legend:

[0029] 1. Workbench; 2. Adjustment mechanism; 201. Fixing plate; 202. Drive assembly; 2021. Motor; 2022. Crank; 2023. Bracket; 2024. Hollow block; 203. Slider; 204. Connecting block; 205. Connecting rod; 206. Connecting plate; 207. Welding head; 3. Fixing mechanism; 301. Clamping block; 302. Support arm; 303. Fixing rod; 304. Fixing frame; 305. Transmission assembly; 3051. Hydraulic rod; 3052. Fixing block; 4. Controller; 5. Display screen. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of an adjustable-angle square battery electrode spot welding mechanism, comprising a worktable 1, an adjustment mechanism 2 installed on the right side of the top wall of the worktable 1 for adjusting the welding angle, and a fixing mechanism 3 installed on the left side of the top wall of the worktable 1 for fixing the battery; the adjustment mechanism 2 includes a fixing plate 201 fixedly connected to the right side of the top wall of the worktable 1, a connecting block 204 slidably connected to the inner wall of the fixing plate 201, a slider 203 fixedly connected to the right side of the outer wall of the connecting block 204, a connecting rod 205 rotatably connected to the upper part of the inner wall of the connecting block 204, and a drive assembly installed on the right side of the top wall of the fixing plate 201. Component 202, drive assembly 202 includes bracket 2023, bracket 2023 is fixedly connected to the right side of the top wall of fixed plate 201, motor 2021 is fixedly connected to the top wall of bracket 2023, motor 2021 is Dongfang Motor PK series, compact design, crank 2022 is fixedly connected to the output end of motor 2021, hollow block 2024 is fixedly connected to the top wall of slider 203, end of crank 2022 is slidably connected to the inner wall of hollow block 2024, connecting plate 206 is rotatably connected to the left side of the top wall of fixed plate 201, welding head 207 is installed on the top wall of connecting plate 206, and the upper right side of the outer wall of connecting plate 206 is connected to connecting rod 205;

[0032] Specifically, starting the motor 2021 causes the crank 2022 to rotate. After the crank 2022 rotates, its end slides inside the hollow block 2024. Therefore, the crank 2022 pulls the hollow block 2024, which in turn causes the slider 203 connected to the hollow block 2024 to slide inside the fixed plate 201. The slider 203 also causes the connecting block 204 to move. When the connecting block 204 moves to the left, the connecting rod 205 pushes the connecting plate 206, causing the connecting plate 206 to rotate to the left at the top of the fixed plate 201. When the connecting block 204 moves to the right, the connecting rod 205 pulls the connecting plate 206, causing the connecting plate 206 to rotate to the right at the top of the fixed plate 201. By moving the connecting block 204, the welding angle and range of the welding head 207 at the top of the connecting plate 206 can be adjusted to prevent the welding angle from becoming fixed, which could lead to poor soldering or burn-through of the battery.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The fixing mechanism 3 includes a fixing frame 304, which is fixedly connected to the inner bottom wall of the workbench 1. Fixing rods 303 are rotatably connected to the left and right sides of the top wall of the fixing frame 304. A transmission assembly 305 is installed on the inner side of the fixing frame 304. The transmission assembly 305 includes a hydraulic rod 3051, which is fixedly connected to the inner wall of the fixing frame 304. A fixing block 3052 is fixedly connected to the top of the hydraulic rod 3051. Support arms 302 are rotatably connected to the left and right sides of the inner wall of the fixing block 3052. A clamping block 301 is fixedly connected to the top of the support arm 302. The end of the support arm 302 is rotatably connected to the inner wall of the fixing rod 303.

[0034] Specifically, the hydraulic rod 3051 drives the fixed block 3052 to move up and down. When the fixed block 3052 moves upward, it pushes the support arm 302. Since the end of the support arm 302 is connected to the fixed rod 303, when the fixed block 3052 moves upward, the fixed rod 303 pulls the support arm 302. The support arm 302 rotates to both sides inside the fixed block 3052, causing the support arm 302 and the clamping block 301 to open. When the fixed block 3052 moves downward, the fixed rod 303 generates the opposite force to push the support arm 302 to rotate. The support arm 302 drives the clamping block 301 to clamp the battery, preventing the electrode from tilting and shifting during the welding process. It can also be used for batteries of different sizes, improving applicability. The positive electrode substrate of the square electrode should be made of alkali-resistant foamed nickel, and the negative electrode substrate should be made of alkali-resistant foamed nickel and perforated nickel-plated steel strip. Aluminum should not be used for the positive and negative electrode substrates and their connecting parts, and copper should not be used for the positive electrode substrate.

[0035] Reference Figure 1 , Figure 2 and Figure 3A controller 4 is installed on the outside of the workbench 1. The controller 4 is fixedly connected to the right side of the outer wall of the workbench 1. The controller 4 is a PLC programmable logic controller 4, Siemens S7-1200 series. A display screen 5 is installed on the top of the controller 4. The display screen 5 is fixedly connected to the right side of the top wall of the controller 4.

[0036] Specifically, the workbench 1 serves as the basic support unit of the equipment, providing stable support rigidity. The controller 4 receives signals from the equipment in real time via cables, converts the signals into digital data, and then displays the information dynamically on the display screen 5.

[0037] Working principle: When the motor 2021 is started, the motor 2021 drives the crank 2022 to rotate. After the crank 2022 rotates, the end of the crank 2022 slides inside the hollow block 2024. Therefore, the crank 2022 will pull the hollow block 2024, thereby driving the slider 203 connected to the hollow block 2024 to slide inside the fixed plate 201. The slider 203 will also drive the connecting block 204 to move. When the connecting block 204 moves to the left, the connecting rod 205 will push the connecting plate 206, causing the connecting plate 206 to rotate to the left at the top of the fixed plate 201. When the connecting block 204 moves to the right, the connecting rod 205 will pull the connecting plate 206, causing the connecting plate 206 to rotate to the right at the top of the fixed plate 201. By moving the connecting block 204, the welding angle and range of the welding head 207 at the top of the connecting plate 206 can be adjusted to prevent the welding angle from being fixed, which would lead to poor soldering and burn-through of the battery.

[0038] The hydraulic rod 3051 drives the fixed block 3052 to move up and down. When the fixed block 3052 moves upward, it pushes the support arm 302. Since the end of the support arm 302 is connected to the fixed rod 303, when the fixed block 3052 moves upward, the fixed rod 303 pulls the support arm 302. The support arm 302 rotates to both sides inside the fixed block 3052, causing the support arm 302 and the clamping block 301 to open. When the fixed block 3052 moves downward, the fixed rod 303 generates the opposite force to push the support arm 302 to rotate. The support arm 302 drives the clamping block 301 to clamp the battery, preventing the electrode from tilting and shifting during the welding process. It can also be used for batteries of different sizes, improving applicability.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable-angle square battery electrode spot welding mechanism, comprising a worktable (1), characterized in that: An adjustment mechanism (2) is installed on the right side of the top wall of the workbench (1). The adjustment mechanism (2) is used to adjust the welding angle. A fixing mechanism (3) is installed on the left side of the top wall of the workbench (1). The fixing mechanism (3) is used to fix the battery. The adjustment mechanism (2) includes a fixed plate (201), which is fixedly connected to the right side of the top wall of the workbench (1). A connecting block (204) is slidably connected to the inner wall of the fixed plate (201). A slider (203) is fixedly connected to the right side of the outer wall of the connecting block (204). A connecting rod (205) is rotatably connected to the upper part of the inner wall of the connecting block (204). A drive assembly (202) is installed on the right side of the top wall of the fixed plate (201).

2. The adjustable-angle square battery electrode spot welding mechanism according to claim 1, characterized in that: The drive assembly (202) includes a bracket (2023), which is fixedly connected to the right side of the top wall of the fixed plate (201). A motor (2021) is fixedly connected to the top wall of the bracket (2023). A crank (2022) is fixedly connected to the output end of the motor (2021). A hollow block (2024) is fixedly connected to the top wall of the slider (203). The end of the crank (2022) is slidably connected to the inner wall of the hollow block (2024).

3. The adjustable-angle square battery electrode spot welding mechanism according to claim 1, characterized in that: A connecting plate (206) is rotatably connected to the left side of the top wall of the fixed plate (201). A welding head (207) is installed on the top wall of the connecting plate (206). The upper right side of the outer wall of the connecting plate (206) is connected to the connecting rod (205).

4. The adjustable-angle square battery electrode spot welding mechanism according to claim 1, characterized in that: The fixing mechanism (3) includes a fixing frame (304), which is fixedly connected to the inner bottom wall of the workbench (1). The top wall of the fixing frame (304) is rotatably connected to the left and right sides of the fixing rod (303), and a transmission assembly (305) is installed on the inner side of the fixing frame (304).

5. The adjustable-angle square battery electrode spot welding mechanism according to claim 4, characterized in that: The transmission assembly (305) includes a hydraulic rod (3051), which is fixedly connected to the inner wall of the fixed frame (304), and a fixing block (3052) is fixedly connected to the top end of the hydraulic rod (3051).

6. The adjustable-angle square battery electrode spot welding mechanism according to claim 5, characterized in that: The inner wall of the fixed block (3052) is rotatably connected to the left and right sides of the fixed block (3052), and the top of the support arm (302) is fixedly connected to the clamping block (301). The end of the support arm (302) is rotatably connected to the inner wall of the fixed rod (303).

7. The adjustable-angle square battery electrode spot welding mechanism according to claim 1, characterized in that: A controller (4) is installed on the outside of the workbench (1), and the controller (4) is fixedly connected to the right side of the outer wall of the workbench (1).

8. The adjustable-angle square battery electrode spot welding mechanism according to claim 7, characterized in that: The controller (4) is equipped with a display screen (5) on its top, and the display screen (5) is fixedly connected to the right side of the top wall of the controller (4).

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