Anti-explosion valve welding clamp and welding equipment

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses an anti-explosion valve welding clamp and welding equipment. The explosion-proof valve welding fixture comprises a positioning seat and two flattening mechanisms, wherein a positioning groove matched with a cover plate is formed in the top wall of the positioning seat; the two flattening mechanisms are arranged at the two ends, in the length direction, of the cover plate correspondingly, the flattening mechanisms are connected to the positioning base and located above the cover plate, and the flattening mechanisms are configured to be capable of moving in the vertical direction so that the flattening mechanisms can be close to and abut against the top wall of the cover plate. According to the explosion-proof valve welding clamp, a cover plate is limited and fixed in the vertical direction, the cover plate is flattened and flattened, the cover plate is prevented from deforming in the welding process, the deformed and warped cover plate is flattened, welding and shaping are conducted synchronously, the production efficiency is improved, the production cost is reduced, and the production efficiency is improved. And meanwhile, the welding quality is improved, it is guaranteed that the flatness of the cover plate meets the requirement, and the quality of batteries obtained through follow-up production is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to an explosion-proof valve welding fixture and welding equipment. Background Art

[0002] The existing square lithium battery upper cover assembly usually includes a cover, an explosion-proof valve and a connection structure. When assembling the cover, the cover and the explosion-proof valve are fixedly connected by laser welding. In addition, the welding process of the cover and the explosion-proof valve has high requirements on the process. The cover and the explosion-proof valve need to be accurately positioned without damaging the cover and the explosion-proof valve before laser welding can be performed.

[0003] In the prior art, a clamp is often used to fix the cover plate, and then the explosion-proof valve is welded to the mounting hole on the cover plate. However, most of the existing clamps have positioning grooves on the clamps, and the cover plate is installed in the positioning grooves to achieve circumferential positioning and fixation of the cover plate. However, due to temperature changes during welding and bumps during transportation of the cover plate, the cover plate is easily bent and deformed, such as warping at both ends of the length direction of the cover plate. After welding is completed, a shaping process needs to be performed again to ensure that the flatness of the cover plate meets the requirements, resulting in low production efficiency and high production costs.

[0004] Therefore, it is urgent to provide a new explosion-proof valve welding fixture and welding equipment to solve the above-mentioned technical problems in the prior art. Utility Model Content

[0005] The utility model aims to provide an explosion-proof valve welding fixture, which can position and fix a cover plate in a vertical direction, improve the positioning accuracy of the cover plate, and ensure the flatness of the cover plate during the welding process.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The explosion-proof valve welding fixture includes a positioning seat and two flattening mechanisms. The top wall of the positioning seat is provided with a positioning groove for cooperating with the cover plate; the two flattening mechanisms are respectively arranged at both ends of the cover plate along the length direction, the flattening mechanisms are connected to the positioning seat and are located above the cover plate, and the flattening mechanisms are configured to be able to move in the vertical direction so that the flattening mechanisms are close to and abut against the top wall of the cover plate.

[0008] Optionally, the flattening mechanism comprises a driving member and a flattening member, the driving member is fixed to the positioning seat, the flattening member is connected to an output end of the driving member, and the flattening member can approach and abut against the top wall of the cover plate.

[0009] Optionally, the flattening mechanism further includes a connecting member, the driving member is arranged at both ends of the positioning seat along the length direction, one end of the connecting member is connected to the output end of the driving member, and the other end is connected to the flattening member, and the connecting member extends from the output end of the driving member along the length direction toward the center of the positioning seat.

[0010] Optionally, the driving member comprises a driving cylinder, and a piston rod of the driving cylinder is bolted to the connecting member.

[0011] Optionally, the top wall of the cover plate is not higher than the top port of the positioning groove, the width of the flattening piece is not greater than the width of the positioning groove, and the maximum distance between the two flattening pieces along the length direction is not greater than the length of the positioning groove.

[0012] Optionally, the top wall of the cover plate is higher than the top port of the positioning groove, the width of the flattening piece is greater than the width of the positioning groove, and the maximum distance between the two flattening pieces along the length direction is greater than the length of the positioning groove.

[0013] Optionally, the two ends of the positioning seat along the length direction and any one of the connecting members are provided with guide columns, and the other one is provided with a guide hole, and the guide columns are slidably connected to the guide holes.

[0014] Optionally, the explosion-proof valve welding fixture further includes a mounting bracket and two fixing parts, the fixing parts are respectively arranged at both ends of the positioning seat along the length direction, the positioning seat is arranged on the mounting bracket, one end of the fixing part is fixedly connected to the driving part, and the other end is fixedly connected to the positioning seat and the mounting bracket.

[0015] Optionally, the positioning seat is provided with an avoidance hole, a barcode scanner is arranged on the mounting bracket at a position directly opposite to the avoidance hole, and the avoidance hole is arranged directly opposite to the QR code at the bottom of the cover plate.

[0016] Another object of the utility model is to provide a welding device, which includes the explosion-proof valve welding fixture as described in any of the above schemes. By using the explosion-proof valve welding fixture as described in any of the above schemes, the welding device can improve the positioning accuracy between the cover plate and the explosion-proof valve body, improve the welding quality, and ensure that the flatness of the cover plate meets the requirements, thereby reducing production costs and improving production quality.

[0017] Beneficial effects:

[0018] The explosion-proof valve welding fixture in the utility model uses the positioning grooves provided on the top wall of the positioning seat to carry out circumferential positioning and fixing of the cover plate, and the positioning seat is respectively provided with flattening mechanisms at both ends along the length direction, and the flattening mechanism is arranged above the cover plate and can move in the vertical direction. After the explosion-proof valve body is correspondingly installed on the cover plate, the flattening mechanism is firstly made to approach the cover plate in the vertical direction, so that the flattening mechanism presses and fixes the two ends of the cover plate in the length direction in the positioning grooves, which not only limits and fixes the cover plate in the vertical direction, but also flattens and smoothes the cover plate to prevent the cover plate from being deformed due to temperature changes during welding, and flattens the cover plate that has been deformed and warped, so as to realize the simultaneous welding and shaping, reduce the processing procedures, improve the production efficiency and reduce the labor, equipment and site costs of production, and at the same time not only improve the welding quality, but also ensure that the flatness of the cover plate meets the requirements, and improve the quality of the battery obtained in subsequent production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axonometric view of the explosion-proof valve welding fixture provided by the specific implementation mode of the utility model;

[0020] Figure 2 It is a top view of the explosion-proof valve welding fixture provided by the specific implementation mode of the utility model;

[0021] Figure 3 It is an axonometric view from another perspective of the explosion-proof valve welding fixture provided by the specific implementation method of the utility model.

[0022] In the figure:

[0023] 10. Cover plate; 11. Explosion-proof valve body;

[0024] 100, positioning seat; 110, positioning groove; 120, guide column; 130, avoidance hole; 140, fixing piece;

[0025] 200, flattening mechanism; 210, driving member; 211, piston rod; 220, flattening member; 230, connecting member; 231, guide hole;

[0026] 300. Mounting bracket; 310. Barcode scanner. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] Please refer to Figure 1 In this embodiment, the explosion-proof valve welding fixture includes a positioning seat 100 and two flattening mechanisms 200. The top wall of the positioning seat 100 is provided with a positioning groove 110 for cooperating with the cover plate 10; the two flattening mechanisms 200 are respectively arranged at both ends of the cover plate 10 along the length direction, and the flattening mechanisms 200 are connected to the positioning seat 100 and are located above the cover plate 10. The flattening mechanisms 200 are configured to be able to move in the vertical direction so that the flattening mechanisms 200 are close to and abut against the top wall of the cover plate 10.

[0032] The explosion-proof valve welding fixture in this embodiment uses the positioning groove 110 provided on the top wall of the positioning seat 100 to position and fix the cover plate 10 in the circumferential direction. The positioning seat 100 is provided with a flattening mechanism 200 at both ends along the length direction. The flattening mechanism 200 is provided above the cover plate 10 and can move in the vertical direction. After the explosion-proof valve body 11 is correspondingly installed on the cover plate 10, the flattening mechanism 200 is firstly made to approach the cover plate 10 in the vertical direction, so that the flattening mechanism 200 presses and fixes the two ends of the cover plate 10 in the length direction to the positioning seat 10. In the positioning groove 110, the cover plate 10 is not only limited and fixed in the vertical direction, but also flattened and smoothed to prevent the cover plate 10 from deformation due to temperature changes during welding, and the deformed and warped cover plate 10 is flattened to achieve simultaneous welding and shaping, reducing processing procedures, improving production efficiency, and reducing production labor, equipment and site costs. At the same time, not only the quality of welding is improved, but also the flatness of the cover plate 10 is guaranteed to meet the requirements, thereby improving the quality of the batteries produced subsequently.

[0033] Furthermore, the flattening mechanism 200 includes a driving member 210 and a flattening member 220. The driving member 210 is fixed to the positioning seat 100, and the flattening member 220 is connected to the output end of the driving member 210. The flattening member 220 can approach and abut against the top wall of the cover plate 10. The driving member 210 drives the flattening member 220 to approach and abut against the top wall of the cover plate 10, which can improve the movement stability of the flattening member 220 and improve the flattening and shaping effect of the flattening member 220 on the cover plate 10.

[0034] Specifically, the flattening mechanism 200 further includes a connecting member 230. The driving member 210 is disposed at both ends of the positioning seat 100 along the length direction. One end of the connecting member 230 is connected to the output end of the driving member 210, and the other end is connected to the flattening member 220. The connecting member 230 is extended from the output end of the driving member 210 along the length direction toward the center of the positioning seat 100. In this embodiment, the flattening member 220 is disposed on the lower wall of the connecting member 230. The driving member 210 is used to drive the connecting member 230 to reciprocate up and down. The flattening member 220 is disposed at the far end of the connecting member 230, which can reduce the volume of the flattening member 220, avoid interference between the flattening member 220 and other structures of the explosion-proof valve welding fixture, and ensure that the flattening member 220 can smoothly press and flatten the cover plate 10.

[0035] Optionally, the driving member 210 includes a driving cylinder, and the piston rod 211 of the driving cylinder is bolted to the connecting member 230. It is conceivable that the driving member 210 can also be selected as a linear reciprocating motor, and the connecting member 230 is bolted to the output shaft of the linear reciprocating motor. Those skilled in the art can select the form of the driving member 210 according to specific needs, which will not be repeated here.

[0036] Optionally, the two ends of the positioning seat 100 along the length direction and any one of the connecting members 230 are provided with guide posts 120, and the other is provided with guide holes 231, and the guide posts 120 are slidably connected to the guide holes 231. In this embodiment, the positioning seat 100 is provided with guide posts 120 extending in the vertical direction, and the connecting member 230 is provided with guide holes 231. The guide posts 120 are used to slide in cooperation with the guide holes 231, which can guide and limit the movement of the connecting member 230 and the flattening member 220, ensuring that the flattening member 220 can steadily press and fix the cover plate 10, thereby improving the positioning, fixing and flattening effects.

[0037] In an alternative embodiment, please refer to Figure 2 , the top wall of the cover plate 10 is not higher than the top end of the positioning groove 110, the width of the flattening piece 220 is W2, the width of the positioning groove 110 is W1, W1≥W2; the maximum distance between the two flattening pieces 220 along the length direction is L2, the length of the positioning groove 110 is L1, L1≥L2. Since the top wall of the cover plate 10 is not higher than the top end of the positioning groove 110, the flattening piece 220 needs to be able to be accommodated in the positioning groove 110, that is, the size of the flattening piece 220 is not larger than the size of the positioning groove 110, to prevent the flattening piece 220 from colliding with the groove wall of the positioning groove 110 during the process of pressing the cover plate 10, and to ensure the pressing, fixing and flattening effect of the flattening piece 220.

[0038] In another optional embodiment, the top wall of the cover plate 10 is higher than the top end of the positioning groove 110, the width of the flattening member 220 is W2, the width of the positioning groove 110 is W1, W1<W2, the maximum distance between the two flattening members 220 along the length direction is L2, the length of the positioning groove 110 is L1, L1<L2. Since the top wall of the cover plate 10 is higher than the top end of the positioning groove 110, the size of the flattening member 220 does not need to be set to avoid the positioning groove 110, and the size of the flattening member 220 is made larger than the size of the positioning groove 110 or the cover plate 10, which can ensure that the flattening member 220 completely covers both ends of the cover plate 10, further improving the effect of tightening, fixing and flattening.

[0039] Please refer to Figure 3Optionally, the explosion-proof valve welding fixture further includes a mounting bracket 300 and two fixing members 140. The fixing members 140 are arranged at both ends of the positioning seat 100 along the length direction. The positioning seat 100 is arranged on the mounting bracket 300. One end of the fixing member 140 is fixedly connected to the driving member 210, and the other end is fixedly connected to the positioning seat 100 and the mounting bracket 300. In this embodiment, there are four fixing members 140, and two fixing members 140 are respectively arranged at both ends of the positioning seat 100 along the length direction. The fixing members 140 are bolted to the positioning seat 100, and the bolts also pass through the positioning seat 100 and are fixedly connected to the mounting bracket 300. The other end of the fixing member 140 is bolted to the driving member 210, so that the positioning seat 100, the flattening mechanism 200 and the mounting bracket 300 are fixed to each other, and the fixing is more stable. The bolt connection is easy to disassemble, which is convenient for disassembly and maintenance of key components.

[0040] Furthermore, the positioning seat 100 is provided with an avoidance hole 130, and a barcode scanner 310 is provided on the mounting bracket 300 and at a position facing the avoidance hole 130, and the avoidance hole 130 is provided facing the QR code at the bottom of the cover plate 10. The barcode scanner 310 faces the avoidance hole 130 and the QR code at the bottom of the cover plate 10 at the avoidance hole 130, and can enable the barcode scanner 310 to read the parameter information of the cover plate 10 from the QR code of the corresponding cover plate 10 and enter it into the system of the welding equipment during welding, so as to realize the QR code tracing function of the cover plate 10 during welding, reduce the manual code scanning process, and save costs.

[0041] This embodiment also provides a welding device, which includes the explosion-proof valve welding fixture as described in any of the above solutions. By using the explosion-proof valve welding fixture as described in any of the above solutions, the welding device can improve the positioning accuracy between the cover plate 10 and the explosion-proof valve body 11, improve the welding quality, and ensure that the flatness of the cover plate 10 meets the requirements, thereby reducing production costs and improving production quality.

[0042] When the explosion-proof valve welding fixture in this embodiment is used, first, the cover plate 10 is placed in the positioning groove 110 of the positioning seat 100, and the explosion-proof valve body 11 is correspondingly installed on the cover plate 10, and the laser start button on the welding equipment is pressed, and the driving member 210 is turned on through the electronic control unit, driving the flattening member 220 to move vertically downward along the piston rod 211, and finally the flattening member 220 contacts the top wall of the cover plate 10, and the cover plate 10 is pressed and fixed in the positioning groove 110, and the applied force presses and flattens the deformed and warped surface of the cover plate 10. Then, the explosion-proof valve body 11 is welded to the cover plate 10 by laser welding, and after the welding is completed, the barcode scanner 310 reads the parameter information of the cover plate 10 from the corresponding QR code of the cover plate 10 and enters it into the system of the welding equipment, so as to realize the QR code traceability function of the cover plate 10 during welding. After the explosion-proof valve body 11 is welded, the electronic control unit turns on the driving member 210 again, and the flattening member 220 moves vertically upward along the piston rod 211 until it returns to the initial position.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Explosion-proof valve welding fixture, characterized in that: include: A positioning seat (100), wherein a top wall of the positioning seat (100) is provided with a positioning groove (110) for cooperating with the cover plate (10); Two flattening mechanisms (200), the two flattening mechanisms (200) are arranged at two ends of the cover plate (10) along the length direction, the flattening mechanisms (200) are connected to the positioning seat (100) and are located above the cover plate (10), and the flattening mechanisms (200) are configured to be able to move in a vertical direction so that the flattening mechanisms (200) are close to and abut against the top wall of the cover plate (10).

2. The explosion-proof valve welding fixture according to claim 1, characterized in that: The flattening mechanism (200) comprises a driving member (210) and a flattening member (220); the driving member (210) is fixedly connected to the positioning seat (100); the flattening member (220) is connected to the output end of the driving member (210); and the flattening member (220) is capable of approaching and abutting against the top wall of the cover plate (10).

3. The explosion-proof valve welding fixture according to claim 2, characterized in that: The flattening mechanism (200) further comprises a connecting member (230), the driving member (210) being arranged at both ends of the positioning seat (100) along the length direction, one end of the connecting member (230) being connected to the output end of the driving member (210), and the other end being connected to the flattening member (220), and the connecting member (230) being extended from the output end of the driving member (210) along the length direction toward the center of the positioning seat (100).

4. The explosion-proof valve welding fixture according to claim 3, characterized in that: The driving member (210) comprises a driving cylinder, and a piston rod (211) of the driving cylinder is bolted to the connecting member (230).

5. The explosion-proof valve welding fixture according to claim 3, characterized in that: The top wall of the cover plate (10) is not higher than the top port of the positioning groove (110), the width of the flattening piece (220) is not greater than the width of the positioning groove (110), and the maximum distance between the two flattening pieces (220) along the length direction is not greater than the length of the positioning groove (110).

6. The explosion-proof valve welding fixture according to claim 3, characterized in that: The top wall of the cover plate (10) is higher than the top port of the positioning groove (110), the width of the flattening piece (220) is greater than the width of the positioning groove (110), and the maximum distance between the two flattening pieces (220) along the length direction is greater than the length of the positioning groove (110).

7. The explosion-proof valve welding fixture according to claim 3, characterized in that: The two ends of the positioning seat (100) along the length direction and any one of the connecting pieces (230) are provided with a guide column (120), and the other is provided with a guide hole (231), and the guide column (120) is slidably connected to the guide hole (231).

8. The explosion-proof valve welding fixture according to claim 3, characterized in that: The explosion-proof valve welding fixture further comprises a mounting bracket (300) and two fixing members (140), wherein the fixing members (140) are respectively arranged at two ends of the positioning seat (100) along the length direction, the positioning seat (100) is arranged on the mounting bracket (300), and one end of the fixing member (140) is fixedly connected to the driving member (210), and the other end is fixedly connected to the positioning seat (100) and the mounting bracket (300).

9. The explosion-proof valve welding fixture according to claim 8, characterized in that: The positioning seat (100) is provided with an avoidance hole (130), a code scanner (310) is arranged on the mounting bracket (300) at a position directly opposite to the avoidance hole (130), and the avoidance hole (130) is arranged directly opposite to the QR code at the bottom of the cover plate (10).

10. Welding equipment, characterized in that It comprises the explosion-proof valve welding fixture as described in any one of claims 1-9.

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