Lithium battery liquid cooling plate friction welding fixture

Abstract

This utility model relates to a friction welding fixture for lithium battery liquid-cooled plates. The liquid-cooled plate is placed flat on a welding table. A first fixed positioning block is set on one side of the welding table, and the right side of the liquid-cooled plate abuts against the first fixed positioning block. A second fixed positioning block is set on one side of the welding table, and the short strip of the liquid-cooled plate abuts against the second fixed positioning block. A first movable positioning component and a second movable positioning component are set on one side of the welding table. The movable positioning plate in the first movable positioning component abuts against the left side of the liquid-cooled plate, and the movable positioning plate in the second movable positioning component abuts against the long strip of the liquid-cooled plate. Large clamping components are set on corresponding sides of the welding table, which respectively press the left and right sides of the liquid-cooled plate. Small clamping components and unloading clamping components are set on the other corresponding sides of the welding table. The small clamping components press the long strip of the liquid-cooled plate, and the unloading clamping components press the short strip of the liquid-cooled plate. This utility model realizes automated positioning and clamping of the liquid-cooled plate.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a friction welding fixture for lithium battery liquid cooling plates. Background Technology

[0002] Liquid cooling plates are used for heat dissipation in lithium batteries. One manufacturing process for liquid cooling plates is friction welding. Our company has designed a liquid cooling plate structure as follows: Figure 1 As shown, it includes a left plate, a middle plate, and a right plate. Three short strips are embedded on one side of the liquid cooling plate, and two long strips are embedded on the other side. All these components are friction welded to form a complete liquid cooling plate. The left and right plates have the same structure, and the short and long strips have the same structure, only their lengths differ.

[0003] The liquid cooling plate needs to be positioned on all four sides, meaning the edges of the left and right plates, as well as the three short and two long strips. The liquid cooling plate also needs to be pressed firmly on all four sides, meaning the left and right plates, the three short strips, and the two long strips all need to be pressed firmly. The area between the two long strips is particularly important, requiring both positioning and pressing. Figure 1 The location shown at point A in the middle.

[0004] Before welding the liquid cooling plate, all components need to be assembled, positioned, and clamped before friction welding to ensure the relative fixation of each component's position during the welding process. Conventional positioning and clamping uses manual clamping fixtures, requiring manual operation and clamping on each side of the liquid cooling plate. This results in a large number of manual clamping fixtures, leading to high labor intensity and low production efficiency. Furthermore, inconsistent mental and physical states among different operators, or even the same operator, can cause inconsistencies in the clamping of the liquid cooling plate. Summary of the Invention

[0005] To address the problems of cumbersome operation and high labor intensity of manual pressure plate clamps, this utility model provides a friction welding clamp for lithium battery liquid cooling plates. The clamp is driven by a cylinder to achieve automated positioning and clamping, reducing the labor intensity of manual operation, while effectively meeting the positioning and clamping requirements of the liquid cooling plate.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A friction welding fixture for lithium battery liquid cooling plates is used for automatic positioning and clamping of liquid cooling plates. It includes a fixed positioning block 1, a fixed positioning block 2, a movable positioning component 1, a movable positioning component 2, a large clamping component, a small clamping component, and a material unloading clamping component. The liquid cooling plate is placed flat on the welding table. Multiple fixed positioning blocks are set on one side of the welding table. The right plate of the liquid cooling plate abuts against the fixed positioning block, which facilitates positioning one side of the liquid cooling plate. Multiple fixed positioning blocks are set on the side of the welding table adjacent to the fixed positioning block. The two types of fixed positioning blocks are located on adjacent sides of the welding table respectively. The short plate of the liquid cooling plate abuts against the fixed positioning block, which facilitates positioning the two sides of the liquid cooling plate. The first movable positioning component is provided on one side of the welding table, and the second movable positioning component is provided on the other side of the welding table adjacent to the first movable positioning component. The two movable positioning components are located on adjacent sides of the welding table respectively. Both the first movable positioning component and the second movable positioning component include a movable positioning plate controlled by a cylinder. The movable positioning plate in the first movable positioning component abuts against the left plate of the liquid cooling plate to facilitate positioning of the liquid cooling plate on three sides. The movable positioning plate in the second movable positioning component abuts against the long strip of the liquid cooling plate to facilitate positioning of the liquid cooling plate on four sides. The welding table is equipped with large clamping components on both sides. The large clamping components on both sides press the left and right plates of the liquid cooling plate evenly over a large area, which is convenient for pressing one and two sides of the liquid cooling plate. The welding table is equipped with small clamping components and unloading clamping components on the other two sides. The small clamping components press the long strips of the liquid cooling plate, which is convenient for pressing three sides of the liquid cooling plate. The unloading clamping components press the short strips of the liquid cooling plate, which is convenient for pressing four sides of the liquid cooling plate. The large clamping components, small clamping components and unloading clamping components all include clamping rods controlled by cylinders.

[0007] Furthermore, the welding table is a rectangular table, and there are three fixed positioning blocks on one side of the welding table, with the right plate evenly abutting against the three fixed positioning blocks. The number of fixed positioning blocks on the adjacent side of the welding table is six. The six fixed positioning blocks are arranged in pairs and abut against the three short strips respectively.

[0008] Furthermore, the first movable positioning component and the first fixed positioning block are arranged on corresponding sides of the welding table, and the second movable positioning component and the second fixed positioning block are arranged on corresponding sides of the welding table. The number of the first movable positioning component and the second movable positioning component is two. Both the first and second movable positioning components include a positioning seat, a positioning cylinder, and a movable positioning plate. The positioning seat is horizontally arranged and bent into a "U" shape. The positioning cylinder is mounted on the positioning seat, and the movable positioning plate is mounted on the piston rod of the positioning cylinder to facilitate horizontal movement of the movable positioning plate. The movable positioning plate slides horizontally above the positioning seat. The movable positioning plate in the first movable positioning component is a straight plate, while the movable positioning plate in the second movable positioning component has a "T" shaped cross-section.

[0009] Furthermore, the large clamping components on one side are arranged in a row with the fixed positioning blocks on the same side of the welding table, and the large clamping components on the other side are arranged in a row with the movable positioning components on the same side of the welding table; there are three large clamping components on each side, and the three large clamping components evenly clamp the left or right plate. The small clamping components and the movable positioning components are arranged in two rows on the same side of the welding table, and there are two small clamping components. The unloading clamping components and the fixed positioning blocks are arranged in two rows on the same side of the welding table, and there are three unloading clamping components.

[0010] Furthermore, the large clamping assembly and the small clamping assembly have the same structure. Both the large clamping assembly and the small clamping assembly include a clamping seat, a clamping cylinder, and a clamping rod. The clamping seat is fixedly connected to the welding table. The clamping cylinder is hinged to the lower part of the clamping seat and the clamping rod is hinged to the upper part of the clamping seat. The longitudinal section of the clamping rod is "T" shaped, and one end of the clamping rod is hinged to the piston rod of the clamping cylinder. The large clamping assembly has a clamping rod with a clamping frame hinged to its other end. The clamping frame is rectangular, and an anti-overturning rod is inserted between the clamping rod and the clamping frame to prevent the clamping frame from rotating. Multiple protrusions are evenly arranged at the bottom of the clamping frame, and the protrusions clamp the left and right plates of the liquid cooling plate. The clamping rod of the small clamping assembly also has a "T" shaped cross-section and presses down on the long strip.

[0011] Furthermore, an integrated assembly is provided at the edge of the welding table between the two small clamping assemblies. This integrated assembly includes a second movable positioning assembly and a small clamping assembly. This conveniently meets the requirement of both positioning and clamping at a specified location of the liquid cooling plate.

[0012] Furthermore, the unloading clamping assembly includes a clamping seat two, a clamping cylinder two, and a connecting rod unit. The clamping seat two is connected and fixed to the welding table. The clamping cylinder two is fixedly installed below the clamping seat two. The connecting rod unit is hinged between the clamping cylinder two and the clamping seat two to facilitate the control of the operation of the connecting rod unit. The linkage unit includes a lifting block, a right connecting rod, a connecting block, a left connecting rod, and a second pressing rod. The lifting block is mounted on the piston rod of the second pressing cylinder. The right connecting rod and the connecting block are respectively hinged to both ends of the lifting block. The right connecting rod is hinged upward to the tail end of the second pressing rod. The connecting block is hinged to the middle of the left connecting rod. The left connecting rod is hinged to the second pressing seat at the bottom and to the middle of the second pressing rod at the top. The second pressing rod has a "T" shaped cross-section and presses the short strip.

[0013] The beneficial effects of this utility model through the above technical solution are: This utility model features a reasonable structural design. Fixed positioning blocks one and two are fixedly installed on adjacent sides of the welding table, while movable positioning components one and two are installed on the remaining adjacent sides of the welding table. Both movable positioning components are movable positioning plates controlled by cylinders. In this way, with the cooperation of fixed positioning block one and movable positioning component one, movement of the liquid cooling plate in the X-axis direction is prevented; and with the cooperation of fixed positioning block two and movable positioning component two, movement of the liquid cooling plate in the Y-axis direction is prevented, thereby achieving automatic positioning of the liquid cooling plate.

[0014] This invention features large clamping components on opposite sides of the welding table, achieving uniform pressing of both sides of the liquid cooling plate via a pressure frame controlled by a cylinder. Small clamping components and unloading clamping components are respectively installed on the other corresponding sides of the welding table. The small clamping components, via a clamping rod controlled by a cylinder, facilitate pressing one side of the liquid cooling plate, while the unloading clamping components, via a clamping rod controlled by a cylinder, facilitate pressing the other side of the liquid cooling plate. This achieves automatic and uniform pressing of the liquid cooling plate around its perimeter.

[0015] The large clamping assembly, small clamping assembly, and unloading clamping assembly of this utility model are all linkage structures. A cylinder provides the driving force to the linkage structure. Through self-adjustment, the linkage structure can remain parallel to the liquid cooling plate within a certain range during downward pressure. This allows for surface contact with the liquid cooling plate, rather than point contact, and achieves uniform distribution of downward pressure, preventing force from acting on a single point and avoiding indentations on the surface of the liquid cooling plate. The small clamping assembly and the unloading clamping assembly are designed differently because the small clamping assembly has a simple structure, low cost, direct force application, and high clamping force; while the main advantage of the unloading clamping assembly is that it can retract below the plane where the liquid cooling plate is placed after release, facilitating part unloading, as the other three sides of the welding table are inconvenient for unloading. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the liquid cooling plate structure.

[0017] Figure 2 This is an isometric view of the overall structure of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0018] Figure 3 This is a top view of the overall structure of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0019] Figure 4 This is a schematic diagram showing the arrangement of the movable positioning component 1, movable positioning component 2, large clamping component, small clamping component, and unloading clamping component of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0020] Figure 5 This is an isometric view of the large clamping component of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0021] Figure 6 This is a top view of the large clamping component of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0022] Figure 7 This is a schematic diagram of the arrangement of the movable positioning component, the small clamping component, and the integrated component of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0023] Figure 8 This is an isometric view of the integrated components of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0024] Figure 9 This is a schematic diagram showing the separation of the movable positioning component 2 and the small clamping component in the integrated assembly of the lithium battery liquid cooling plate friction welding fixture of this utility model.

[0025] Figure 10 This is a cross-sectional view of the comprehensive components of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0026] Figure 11 This is an isometric view of the unloading and clamping assembly of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0027] Figure 12 This is a schematic diagram showing the before and after operation of the unloading and clamping assembly of the friction welding fixture for lithium battery liquid cooling plates of this utility model.

[0028] The attached diagram is labeled as follows: 1 Liquid cooling plate, 101 Left plate, 102 Middle plate, 103 Right plate, 104 Short strip, 105 Long strip, 2 Fixed positioning block one, 3 Fixed positioning block two, 4 Movable positioning component one, 5 Movable positioning component two, 61 Positioning seat, 62 Positioning cylinder, 63 Movable positioning plate, 7 Large clamping component, 8 Small clamping component, 91 Clamping seat one, 92 Clamping cylinder one, 93 Clamping rod one, 10 Pressure frame, 11 Anti-tilting rod, 12 Protrusion, 13 Unloading clamping component, 131 Clamping seat two, 132 Clamping cylinder two, 133 Linkage unit, 14 Lifting block, 15 Right link, 16 Connecting block, 17 Left link, 18 Clamping rod two, 19 Reinforcing plate, 20 Clearance hole, 21 Welding table, 22 Integrated component. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings: like Figures 2-12As shown, a friction welding fixture for lithium battery liquid cooling plates is used for automatic positioning and clamping of the liquid cooling plate 1. The specific structure of the liquid cooling plate 1 is existing technology and will not be described here. Only the fixture used for positioning and clamping the liquid cooling plate 1 will be specifically described. The welding fixture includes a first fixed positioning block 2, a second fixed positioning block 3, a first movable positioning component 4, a second movable positioning component 5, a large clamping component 7, a small clamping component 8, and a material unloading clamping component 13. Through the coordinated use of the above components, the positioning and clamping of the liquid cooling plate 1 before welding are achieved.

[0030] Before welding, the liquid cooling plate 1 is placed flat on the welding table 21. The welding table 21 is a rectangular table used to support the liquid cooling plate 1 and to support the welding fixture. Three fixed positioning blocks 2 are set on one side of the welding table 21. The right plate 103 of the liquid cooling plate 1 abuts against the fixed positioning blocks 2. Specifically, the right plate 103 is evenly abutted against the three fixed positioning blocks 2 to achieve positioning of the right plate 103.

[0031] Six fixed positioning blocks 2 are installed on one side of the welding table 21 adjacent to fixed positioning block 1 2. Both fixed positioning block 1 2 and fixed positioning block 2 3 are fixedly installed and are rectangular blocks. The six fixed positioning blocks 2 3 are arranged in pairs, for a total of three groups. The short strips 104 of the liquid cooling plate 1 abut against the fixed positioning blocks 2 3. The three groups of fixed positioning blocks 2 3 abut against three short strips 104 respectively, thereby positioning the short strips 104.

[0032] A movable positioning component 4 is provided on one side of the welding table 21, and movable positioning component 4 and fixed positioning block 2 are arranged on corresponding sides of the welding table 21. A movable positioning component 5 is provided on the side of the welding table 21 adjacent to movable positioning component 4, and movable positioning component 5 and fixed positioning block 3 are arranged on corresponding sides of the welding table 21. The number of movable positioning components 4 and movable positioning components 5 are both arranged in pairs with intervals, and movable positioning component 5 is arranged at the corner of the welding table 21.

[0033] Both movable positioning components 4 and 5 are movable positioning plates 63 controlled by cylinders, and the movable positioning plates 63 can move back and forth under the control of the cylinders. Specifically, both movable positioning components 4 and 5 include a positioning seat 61, a positioning cylinder 62, and a movable positioning plate 63. The positioning seat 61 is horizontally arranged and bent into a "U" shape. The positioning seat 61 is fixedly connected to the edge of the welding table 21. The positioning cylinder 62 is installed on the positioning seat 61. The positioning cylinder 62 is a double-rod cylinder. The movable positioning plate 63 is installed on the piston rod of the positioning cylinder 62, so the movable positioning plate 63 is controlled by the positioning cylinder 62 and can slide horizontally above the positioning seat 61.

[0034] The difference lies in the following: the movable positioning plate 63 in movable positioning component 1 (4) is a straight plate, while the movable positioning plate 63 in movable positioning component 2 (5) has a "T" shaped cross-section. The movable positioning plate 63 in movable positioning component 1 (4) rests against the left plate 101 of the liquid cooling plate 1, while the movable positioning plate 63 in movable positioning component 2 (5) rests against the long strip 105 of the liquid cooling plate 1. Furthermore, the volume of movable positioning component 2 (5) is larger than that of movable positioning component 1 (4).

[0035] In this way, through the cooperation of fixed positioning block 1 2, fixed positioning block 2 3, movable positioning component 1 4, and movable positioning component 2 5, the liquid cooling plate 1 can be positioned around its perimeter, preventing horizontal displacement. Then, the clamping component, the small clamping component 8, and the unloading clamping component 13 press the liquid cooling plate 1 around its perimeter, thereby fixing the liquid cooling plate 1 to the welding table 21; then welding operations can be carried out.

[0036] Large clamping components 7 are provided on both sides of the welding table 21. On one side, the large clamping component 7 and the fixed positioning block 2 are arranged on the same side of the welding table 21, and on the other side, the large clamping component 7 and the movable positioning component 4 are arranged on the same side of the welding table 21. There are three large clamping components 7 on each side. The large clamping components 7 on both sides press the left plate 101 and the right plate 103 of the liquid cooling plate 1 respectively. That is, the three large clamping components 7 evenly press the left plate 101 or the right plate 103.

[0037] Small clamping components 8 and unloading clamping components 13 are respectively arranged on the other corresponding sides of the welding table 21. The small clamping components 8 and the movable positioning components 25 are arranged on the same side of the welding table 21. There are two small clamping components 8, which are arranged between the two movable positioning components 25. The small clamping components 8 press the long strip 105 of the liquid cooling plate 1. The unloading clamping components 13 and the fixed positioning blocks 23 are arranged on the same side of the welding table 21. There are three unloading clamping components 13. The unloading clamping components 13 press the short strip 104 of the liquid cooling plate 1.

[0038] The large clamping assembly 7, the small clamping assembly 8, and the unloading clamping assembly 13 all include a clamping rod controlled by a cylinder. Specifically, the large clamping assembly 7 and the small clamping assembly 8 have the same structure, and both include a clamping seat 91, a clamping cylinder 92, and a clamping rod 93. The clamping seat 91 is connected and fixed to the welding table 21. The clamping seat 91 has a U-shaped cross-section and is arranged vertically. The clamping cylinder 92 is hinged below the clamping seat 91 and can swing relative to the clamping seat 91. The clamping rod 93 is hinged above the clamping seat 91. The clamping rod 93 has a T-shaped longitudinal cross-section, and one end of the clamping rod 93 is hinged to the piston rod of the clamping cylinder 92, so that the clamping cylinder 92 can control the swing of the clamping rod 93.

[0039] The difference lies in the following: The clamping rod 93 of the large clamping assembly 7 is hinged to a clamping frame 10 at its other end. The clamping frame 10 is rectangular and can distribute the force, forming a larger area of ​​uniform pressure. An anti-rollover rod 11 passes between the clamping rod 93 and the clamping frame 10, restricting relative rotation between them. Multiple protrusions 12 are evenly distributed at the bottom of the clamping frame 10, pressing the left plate 101 and right plate 103 of the liquid cooling plate 1. The clamping rod 93 of the small clamping assembly 8 also has a "T"-shaped cross-section, pressing the long strip 105.

[0040] The unloading clamping assembly 13 is used to clamp the liquid cooling plate 1 while also moving away from the liquid cooling plate 1 to facilitate the unloading of the liquid cooling plate 1. The unloading clamping assembly 13 includes a clamping seat 131, a clamping cylinder 132, and a connecting rod unit 133. The clamping seat 131 is connected and fixed to the welding table 21. The clamping cylinder 132 is fixedly installed below the clamping seat 131, and the two are kept relatively fixed. The connecting rod unit 133 is hinged between the clamping cylinder 132 and the clamping seat 131. The clamping cylinder 132 can control the movement of the connecting rod unit 133.

[0041] The linkage unit 133 includes a lifting block 14, a right connecting rod 15, a connecting block 16, a left connecting rod 17, and a second pressing rod 18. The lifting block 14 is mounted on the piston rod of the second pressing cylinder 132, allowing it to move up and down. The right connecting rod 15 and the connecting block 16 are hinged to both ends of the lifting block 14. The right connecting rod 15 has an "H"-shaped cross-section and is hinged upwards to the tail end of the second pressing rod 18. The connecting block 16 has a "convex"-shaped cross-section and is hinged to the middle of the left connecting rod 17. The left connecting rod 17 is hinged below to the second pressing seat 131 and above to the middle of the second pressing rod 18. The second pressing rod 18 has a "T"-shaped cross-section and presses down on the short strip 104.

[0042] The movement of the linkage unit 133 can ultimately control the movement of the clamping rod 18. The clamping rod 18 can move to the edge of the welding table 21 and press the liquid cooling plate 1. When retracting, the clamping rod 18 moves away from the edge of the welding table 21 and does not block the liquid cooling plate 1, making it easy to remove the liquid cooling plate 1 from the welding table 21.

[0043] The principle of this invention is as follows: In the initial state, all cylinders are in the retracted state. A liquid cooling plate 1 is manually placed on the welding table 21, and the various components are assembled to form a complete liquid cooling plate 1. The movable positioning component 1 4 is activated, and the movable positioning plate 63 moves horizontally to push the liquid cooling plate 1, causing the right plate 103 to abut against the fixed positioning block 1 2. The movable positioning component 2 5 is activated, and the movable positioning plate 63 moves horizontally to push the liquid cooling plate 1, causing the short plate 104 to abut against the fixed positioning block 2 3. Through the cooperation of movable positioning component 1 4 and fixed positioning block 1 2, and movable positioning component 2 5 and fixed positioning block 2 3, the liquid cooling plate 1 can be positioned, remaining fixed horizontally without shifting.

[0044] After the liquid cooling plate 1 is positioned, the large clamping assembly 7 is activated, and the clamping frame 10 is evenly pressed onto the left plate 101 and the right plate 103. The small clamping assembly 8 is activated, and the clamping rod 93 clamps the long plate 105. The unloading clamping assembly 13 is activated, and the clamping rod 18 clamps the short plate 104. This achieves uniform pressing of the liquid cooling plate 1, after which welding can be carried out. When unloading after welding, all cylinders are retracted, and the clamping rod 18 can move to one side of the welding table 21. At this time, the liquid cooling plate 1 can be unloaded from the welding table 21 from the unloading clamping assembly 13.

[0045] It should be noted that the position between the two long strips 105 of the liquid cooling plate 1 needs to be both positioned and pressed. That is, this position needs both pressure from directly above the workpiece and pressure from the side. Therefore, an integrated component is set on the edge of the welding table 21 between the two small pressing components 8. The integrated component includes the movable positioning component 2 5 and the small pressing component 8. The integrated component combines the movable positioning component 2 5 and the small pressing component 8 to achieve a compact structural layout, which can both position the long strips 105 and the middle plate 102 and press them together.

[0046] When the movable positioning component 25 and the small clamping component 8 are combined: the length of the positioning seat 61 of the movable positioning component 25 is increased, and a reinforcing plate 19 is set below the positioning seat 61. The lower end of the reinforcing plate 19 is bent and connected and fixed to the welding table 21. The length of the movable positioning plate 63 is also increased, and a clearance hole 20 is opened on the movable positioning plate 63. After the clearance hole 20 and the movable positioning plate 63 are connected and combined, the cross section is "U" shaped. The small clamping component 8 is arranged inside the extended positioning seat 61. The clamping cylinder 92 of the small clamping component 8 is kept at a certain distance from the reinforcing plate 19, so as not to affect the swing of the clamping cylinder 92. The clamping rod 93 of the small clamping component 8 passes upward through the clearance hole 20 and extends above the movable positioning plate 63. The clearance hole 20 is large enough to ensure that the movable positioning plate 63 does not interfere with the clamping rod 93 when it moves, and the clamping rod 93 is not blocked by the movable positioning plate 63 when it runs.

[0047] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A friction welding fixture for lithium battery liquid cooling plates, used for automatic positioning and clamping of liquid cooling plates (1), characterized in that, It includes a fixed positioning block one (2), a fixed positioning block two (3), a movable positioning component one (4), a movable positioning component two (5), a large clamping component (7) and a small clamping component (8), and a discharge clamping component (13). The liquid cooling plate (1) is placed flat on the welding table (21). Multiple fixed positioning blocks (2) are set on one side of the welding table (21). The right plate (103) of the liquid cooling plate (1) abuts against the fixed positioning block (2). Multiple fixed positioning blocks (3) are set on one side of the welding table (21) adjacent to the fixed positioning block (2). The short strip (104) of the liquid cooling plate (1) abuts against the fixed positioning block (3). The first movable positioning component (4) is provided on one side of the welding table (21), and the second movable positioning component (5) is provided on the other side of the welding table (21) adjacent to the first movable positioning component (4). Both the first movable positioning component (4) and the second movable positioning component (5) include a movable positioning plate (63) controlled by a cylinder. The movable positioning plate (63) in the first movable positioning component (4) abuts against the left plate (101) of the liquid cooling plate (1), and the movable positioning plate (63) in the second movable positioning component (5) abuts against the long strip (105) of the liquid cooling plate (1). The welding table (21) is provided with large clamping components (7) on both sides. The large clamping components (7) on both sides press the left plate (101) and right plate (103) of the liquid cooling plate (1) respectively. The welding table (21) is provided with small clamping components (8) and unloading clamping components (13) on the other corresponding sides respectively. The small clamping components (8) press the long plate (105) of the liquid cooling plate (1), and the unloading clamping components (13) press the short plate (104) of the liquid cooling plate (1). The large clamping components (7), small clamping components (8) and unloading clamping components (13) all include clamping rods controlled by cylinders.

2. The lithium battery liquid cold plate friction welding fixture of claim 1, wherein, The welding table (21) is a rectangular table. There are three fixed positioning blocks (2) on one side of the welding table (21). The right plate (103) is evenly abutted against the three fixed positioning blocks (2). The number of fixed positioning blocks 2 (3) on the adjacent side of the welding table (21) is six. The six fixed positioning blocks 2 (3) are arranged in pairs and abut against the three short strips (104).

3. The lithium battery liquid cold plate friction welding fixture of claim 1, wherein, The first movable positioning component (4) and the first fixed positioning block (2) are arranged on the corresponding sides of the welding table (21), and the second movable positioning component (5) and the second fixed positioning block (3) are arranged on the corresponding sides of the welding table (21). The number of the first movable positioning component (4) and the second movable positioning component (5) are both two. Both the first (4) and the second (5) of the movable positioning components include a positioning seat (61), a positioning cylinder (62) and a movable positioning plate (63). The positioning seat (61) is arranged horizontally and is bent into a "U" shape. The positioning cylinder (62) is installed on the positioning seat (61), and the movable positioning plate (63) is installed on the piston rod of the positioning cylinder (62). The movable positioning plate (63) is horizontally slidable above the positioning seat (61). The movable positioning plate (63) in the first (4) of the movable positioning components is a straight plate, and the movable positioning plate (63) in the second (5) of the movable positioning components has a "T" shaped cross section.

4. The lithium battery liquid cold plate friction welding fixture of claim 1, wherein, One side of the large clamping component (7) and the fixed positioning block (2) are arranged on the same side of the welding table (21), and the other side of the large clamping component (7) and the movable positioning component (4) are arranged on the same side of the welding table (21); there are three large clamping components (7) on each side, and the three large clamping components (7) evenly clamp the left plate (101) or the right plate (103). The small clamping component (8) and the second movable positioning component (5) are arranged on the same side of the welding table (21), and there are two small clamping components (8). The unloading clamping component (13) and the second fixed positioning block (3) are arranged on the same side of the welding table (21), and there are three unloading clamping components (13).

5. The lithium battery liquid-cooled plate friction welding fixture according to claim 4, characterized in that, The large clamping assembly (7) and the small clamping assembly (8) have the same structure. Both the large clamping assembly (7) and the small clamping assembly (8) include a clamping seat (91), a clamping cylinder (92) and a clamping rod (93). The clamping seat (91) is connected and fixed to the welding table (21). The clamping cylinder (92) is hinged below the clamping seat (91), and the clamping rod (93) is hinged above the clamping seat (91). The longitudinal section of the clamping rod (93) is "T" shaped, and one end of the clamping rod (93) is hinged to the piston rod of the clamping cylinder (92). The other end of the clamping rod (93) of the large clamping assembly (7) is hinged to a clamping frame (10). The clamping frame (10) is a rectangular frame. An anti-overturning rod (11) is inserted between the clamping rod (93) and the clamping frame (10). Multiple protrusions (12) are evenly arranged at the bottom of the clamping frame (10). The protrusions (12) clamp the left plate (101) and right plate (103) of the liquid cooling plate (1). The cross-section of the clamping rod (93) of the small clamping assembly (8) is also "T" shaped. The clamping rod (93) of the small clamping assembly (8) presses the long strip (105).

6. The lithium battery liquid-cooled plate friction welding fixture according to claim 4, characterized in that, An integrated assembly is provided at the edge of the welding table (21) between the two small clamping assemblies (8), the integrated assembly including the second movable positioning assembly (5) and the small clamping assembly (8).

7. The lithium battery liquid cold plate friction welding fixture of claim 1, wherein, The unloading clamping assembly (13) includes a clamping seat two (131), a clamping cylinder two (132), and a connecting rod unit (133). The clamping seat two (131) is connected and fixed to the welding table (21). The clamping cylinder two (132) is fixedly installed below the clamping seat two (131). The connecting rod unit (133) is hinged between the clamping cylinder two (132) and the clamping seat two (131). The linkage unit (133) includes a lifting block (14), a right connecting rod (15), a connecting block (16), a left connecting rod (17), and a second pressing rod (18). The lifting block (14) is installed on the piston rod of the second pressing cylinder (132). The right connecting rod (15) and the connecting block (16) are respectively hinged at both ends of the lifting block (14). The right connecting rod (15) is hinged upward to the tail end of the second pressing rod (18). The connecting block (16) is hinged to the middle of the left connecting rod (17). The left connecting rod (17) is hinged below to the second pressing seat (131) and above to the middle of the second pressing rod (18). The second pressing rod (18) has a "T" shaped cross section and presses the short strip (104).

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