Cylindrical CTS start-stop capacitor handheld welding tool

Abstract

The utility model discloses a cylindrical CTS start -stop capacitance handheld welding frock relates to welding positioning frock technical field, including the butt joint seat, be equipped with the first recess and the second recess on butt joint seat, install the fastening pressboard between the first recess and the second recess, be equipped with the welding groove on fastening pressboard, still be equipped with the fixed groove on butt joint seat, and the fixed groove and the welding groove are opposite and set up. The utility model technical scheme through modularization design, simple structure, the low manufacturing cost, not easy to damage, realize accurate positioning in the capacitance welding, reduce the welding position deviation, the quick change of welding frock, promote production security and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of welding positioning fixture technology, specifically, it relates to a cylindrical CTS start-stop capacitor handheld welding fixture. Background Technology

[0002] Start-stop capacitor technology (CTS) is an auxiliary technology in automotive engine automatic start-stop systems, primarily used to reduce battery load and improve system stability. A CTS start-stop capacitor refers to a capacitor used in an automotive engine's automatic start-stop system. Its main function is to assist the car battery, reducing the load on it during frequent starts, extending battery life, and improving the response speed of the start-stop system. Without the help of a start-stop capacitor, engine restarting could generate vibration and noise; the presence of a CTS start-stop capacitor can reduce this vibration and noise, improving driving comfort.

[0003] CTS start-stop capacitors are made by welding two capacitors together. Proper welding of CTS start-stop capacitors is crucial to ensuring their performance and reliability. However, due to the irregularity of the aluminum busbar of CTS start-stop capacitors, there are problems such as difficulty in welding positioning and poor welding stability, which increases the difficulty of welding capacitors.

[0004] No effective solution to the above problems has yet been found. Utility Model Content

[0005] The technical problem to be solved by this utility model is the difficulty in welding positioning and poor welding stability. The technical solution adopted by this utility model to solve the above technical problems is as follows: A cylindrical CTS start-stop capacitor handheld welding fixture includes: a docking seat, a first groove and a second groove on the docking seat, a fastening plate installed between the first groove and the second groove, a welding groove on the fastening plate, and a fixing groove on the docking seat, the fixing groove and the welding groove being arranged opposite to each other.

[0006] Furthermore, it also includes: a U-shaped gasket with a thickness of 1mm; The first base is used to place the first capacitor and keep the first capacitor vertical; the bottom side of the first base is provided with a first through hole. The first end cap is used to position the first four-jaw aluminum busbar; the first end cap is provided with a second through hole and four evenly distributed first positioning holes.

[0007] Furthermore, it also includes: a second base, the side of which is provided with a first positioning groove, and the bottom of which is provided with three positioning posts for fixing the first aluminum busbar and a second positioning groove for placing the positive electrode post of the first capacitor. The second end cap has a third through hole and four evenly distributed second positioning holes, wherein a third positioning hole is provided between two adjacent second positioning holes. The outer side of the second end cap has a first flange, which is connected to the third positioning hole and can be inserted into the first positioning groove.

[0008] Furthermore, it also includes: a third end cap, the outer side of which is provided with a second flange, and a fourth through hole at the junction with the second flange, the fourth through hole allowing the pad to be inserted and placed on the second capacitor; the third end cap is provided with a fourth positioning hole. The third base has a third positioning groove on its side and a fourth and fifth positioning groove on its bottom side.

[0009] Furthermore, the docking seat is used for positioning and fixing the first four-jaw aluminum busbar and the second four-jaw aluminum busbar during the welding of the aluminum busbar claws.

[0010] Furthermore, the gasket and the first base are used together for positioning the first aluminum busbar of the negative electrode of the first capacitor during welding.

[0011] Furthermore, the first end cap is used in conjunction with the first base for positioning during the welding of the first four-claw aluminum busbar of the negative electrode of the second capacitor.

[0012] Furthermore, the second base and the second end cap are used together for positioning and fixing the positive electrode of the first capacitor during the welding of the second four-claw aluminum busbar.

[0013] Furthermore, the third base, the third end cap, and the gasket are used together for positioning and fixing the second aluminum busbar of the positive electrode of the second capacitor during welding.

[0014] The present invention adopts the above technical solution and has the following advantages compared with the prior art: 1. The technical solution of this utility model achieves the consistency of aluminum busbar welding angle through the synergistic effect of mechanical positioning and laser welding, which solves the problems of inaccurate positioning and large heat-affected zone in traditional manual welding, ensures the assembly accuracy of each product, improves welding efficiency, and results in good welding quality and high welding qualification rate. 2. The technical solution of this utility model adopts modular tooling, which has a simple structure, low manufacturing cost, and is not easily damaged, realizing rapid changeover of welding tooling and improving production safety and efficiency. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the welding structure of the first aluminum busbar of the first capacitor in an embodiment of this utility model; Appendix Figure 2 This is an exploded view of the welded structure of the first aluminum busbar of the first capacitor in an embodiment of this utility model; Appendix Figure 3This is a schematic diagram of the welding structure of the first four-claw aluminum busbar of the second capacitor in an embodiment of this utility model; Appendix Figure 4 This is an exploded view of the welded structure of the first four-claw aluminum busbar of the second capacitor in an embodiment of this utility model; Appendix Figure 5 This is a schematic diagram of the welding structure of the second four-claw aluminum busbar of the first capacitor in an embodiment of this utility model; Appendix Figure 6 This is an exploded view of the welded structure of the first capacitor and the second four-claw aluminum busbar in an embodiment of this utility model; Appendix Figure 7 This is a schematic diagram of the structure of the second base in an embodiment of this utility model; Appendix Figure 8 This is a schematic diagram of the structure of the second end cap in an embodiment of this utility model; Appendix Figure 9 This is a schematic diagram of the aluminum bar claw welding structure of the first four-claw aluminum bar and the second four-claw aluminum bar in the embodiment of this utility model; Appendix Figure 10 This is a schematic diagram of the docking seat in an embodiment of this utility model; Appendix Figure 11 This is a schematic diagram of the welding structure of the second aluminum busbar of the second capacitor in an embodiment of this utility model; Appendix Figure 12 This is an exploded view of the welding structure of the second aluminum busbar of the second capacitor in an embodiment of this utility model; Appendix Figure 13 This is a schematic diagram of the third base structure in an embodiment of this utility model; Wherein: 1-shim, 2-first base, 21-first through hole, 3-second base, 31-first positioning groove, 32-positioning post, 33-second positioning groove, 4-first end cap, 41-first positioning hole, 42-second through hole, 5-second end cap, 51-first flange, 52-second positioning hole, 53-third positioning hole, 54-third through hole, 6-third end cap, 61-second flange, 62-fourth through hole, 63-fourth positioning hole, 7-third base, 71-third positioning groove, 72-fourth positioning groove, 73-fifth positioning groove, 8-connecting seat, 81-fastening pressure plate, 82-first groove, 83-second groove, 84-fixing groove, 85-welding groove, 9-first capacitor, 10-first aluminum busbar, 11-second capacitor, 12-first four-jaw aluminum busbar, 13-second four-jaw aluminum busbar, 131-terminal, 14-second aluminum busbar. Detailed Implementation

[0016] The following provides a clearer understanding of the technical features, objectives, and effects of this utility model. Specific embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that the following does not constitute a limitation on the scope of protection of this utility model.

[0017] The assembly of the cylindrical CTS start-stop capacitor involves two capacitor elements. The two capacitor elements are electrically connected through aluminum busbars. The first aluminum busbar 10 is welded to the negative terminal of the first capacitor 9, and the second four-jaw aluminum busbar 13 is welded to the positive terminal of the first capacitor 9. The second four-jaw aluminum busbar 13 has a terminal 131. The first four-jaw aluminum busbar 12 is welded to the negative terminal of the second capacitor 11. The aluminum busbars of the first four-jaw aluminum busbar 12 and the second four-jaw aluminum busbar 13 are butt welded together. The second aluminum busbar 14 is welded to the negative terminal of the second capacitor 11. The angles of the first aluminum busbar 10 and the second aluminum busbar 14 must be consistent after welding. This completes the composition of the cylindrical CTS start-stop capacitor.

[0018] Examples, such as Figures 1-13 As shown, a cylindrical CTS start-stop capacitor handheld welding fixture includes: Gasket 1, which is U-shaped and 1mm thick.

[0019] The first base 2 has a first through hole 21 on its bottom side. The first base 2 is used to place the first capacitor 9 and keep the first capacitor 9 vertical. The gasket 1 is used in conjunction with the first base 2 for positioning the first aluminum busbar 10 of the first capacitor 9 during welding.

[0020] Welding of the negative electrode of the first aluminum busbar 10 of the first capacitor 9: Place the positive electrode of the first capacitor 9 vertically inside the first base 2, and place the positive electrode post of the first capacitor 9 in the first through hole 21 to keep the first capacitor 9 vertical and prevent it from tipping over. When welding the first aluminum busbar 10, the bottom of the first aluminum busbar 10 needs to be 1mm away from the upper surface of the first capacitor 9. Place the pad 1 and the first aluminum busbar 10 on the first capacitor 9 in sequence. Insert the negative electrode post of the first capacitor 9 into the reserved hole of the first aluminum busbar 10 to complete the welding positioning of the first aluminum busbar 10. Use a handheld laser welder to weld the first aluminum busbar 10. After welding, remove the pad 1.

[0021] It also includes a first end cap 4 for positioning the first four-jaw aluminum busbar 12. The first end cap 4 has a second through hole 42 and four evenly distributed first positioning holes 41. The first positioning holes 41 are precisely inserted into the aluminum busbar claws of the first four-jaw aluminum busbar 12, and the negative terminal of the second capacitor 11 is inserted into the second through hole 42. The first positioning holes 41 restrict the rotation of the aluminum busbar claws of the first four-jaw aluminum busbar 12, and the second through hole 42 further positions the first four-jaw aluminum busbar 12 by auxiliary limiting. The first end cap 4 is used in conjunction with the first base 2 for positioning the negative terminal of the second capacitor 11 during welding of the first four-jaw aluminum busbar 12.

[0022] Welding of the negative terminal of the second capacitor 11 to the first four-claw aluminum busbar 12: The positive terminal of the second capacitor 11 is vertically placed into the first base 2, and the positive terminal post of the second capacitor 11 is placed in the first through hole 21 to keep the second capacitor 11 vertical. The first four-claw aluminum busbar 12 is sleeved on the negative terminal post of the second capacitor 11, and the aluminum busbar claws of the first four-claw aluminum busbar 12 pass through the first positioning hole 41 respectively. The first end cap 4 is sleeved on the second capacitor 11, and the negative terminal post of the second capacitor 11 passes through the second through hole 42 to complete the positioning of the second capacitor 11 and the first four-claw aluminum busbar 12 during welding. The first four-claw aluminum busbar 12 is welded to the negative terminal post of the second capacitor 11 using a handheld laser welder.

[0023] It also includes a second base 3, the side of which is provided with a first positioning groove 31, and the bottom of the second base 3 is provided with three positioning posts 32 for fixing the first aluminum busbar 10 and a second positioning groove 33 for placing the negative electrode post of the first capacitor 9. It also includes a second end cap 5, which has a third through hole 54 and four evenly distributed second positioning holes 52 on its surface. A third positioning hole 53 is provided between two adjacent second positioning holes 52. The third through hole 54 guides the positive terminal of the first capacitor 9 through it. The second positioning holes 52 are precisely aligned with the aluminum claws of the second four-claw aluminum busbar 13. The outer side of the second end cap 5 has a first flange 51, which connects to the third positioning hole 53. The first flange 51 can be inserted into the first positioning groove 31 to lock the second end cap 5.

[0024] The second base 3 works in conjunction with the second end cap 5 to position and fix the second four-jaw aluminum busbar 13 of the positive electrode of the first capacitor 9 during welding. The first aluminum busbar 10 is restricted from rotating by the second positioning groove 33 and the positioning post 32. Combined with the positioning of the first positioning groove 31, the first flange 51, the second positioning hole 52 and the third positioning hole 53, a fixed angle is formed between the second four-jaw aluminum busbar 13 and the first aluminum busbar 10.

[0025] Welding of the positive terminal of the first capacitor 9 to the second four-claw aluminum busbar 13: Place the negative terminal of the first capacitor 9, which has already been welded with the first aluminum busbar 10, into the second base 3. Snap the first aluminum busbar 10 onto the positioning post 32. The negative terminal of the first capacitor 9 extends into the second positioning groove 33, keeping the first aluminum busbar 10 vertical. The second four-claw aluminum busbar 13 is fitted onto the positive terminal of the first capacitor 9. The aluminum busbar claws and the terminal block 131 of the second four-claw aluminum busbar 13 are respectively inserted into the second positioning hole 52 and the third positioning hole 53. Fit the second end cap 5 onto the first capacitor 9, while the first flange 51 is inserted into the first positioning groove 31 to lock the second end cap 5. The positive terminal of the first capacitor 9 passes through the third through hole 54, completing the positioning and fixing of the first capacitor 9 and the second four-claw aluminum busbar 13 during welding. Use a handheld laser welder to weld the second four-claw aluminum busbar 13.

[0026] It also includes a docking seat 8, which has a first groove 82 and a second groove 83. A fastening pressure plate 81 is installed between the first groove 82 and the second groove 83. The fastening pressure plate 81 has a welding groove 85. The docking seat 8 also has a fixing groove 84, which is arranged opposite to the welding groove 85. After the four pairs of aluminum bar claws of the first four-jaw aluminum bar 12 and the second four-jaw aluminum bar 13 are docked, the welding groove 85 and the fixing groove 84 alternately position the aluminum bar claws. The upper pair of aluminum bar claws can be inserted into the welding groove 85 and the welding part is exposed. At the same time, the opposite lower pair of aluminum bar claws can be inserted into the fixing groove 84. The docking seat 8 is used for positioning and fixing the four pairs of aluminum bar claws of the first four-jaw aluminum bar 12 and the second four-jaw aluminum bar 13 during welding.

[0027] Alignment welding of the aluminum pins of the second four-prong aluminum busbar 13 and the first four-prong aluminum busbar 12: Place the first capacitor 9 in the first groove 82 and the second capacitor 11 in the second groove 83, so that the aluminum pins of the first four-prong aluminum busbar 12 and the aluminum pins of the second four-prong aluminum busbar 13 are aligned. Insert the lower pair of aluminum pins into the fixing groove 84, and then insert the upper pair of aluminum pins into the welding groove 85. Fix the fastening plate 81, and use a handheld laser welder to weld the aluminum pins inserted into the welding groove 85. After each pair of aluminum pins is welded, remove the fastening plate 81, rotate the second four-prong aluminum busbar 13 and the first four-prong aluminum busbar 12 to reposition them, until all four pairs of aluminum pins are welded.

[0028] It also includes a third end cap 6, the outer side of which is provided with a second flange 61, and a fourth through hole 62 is provided at the junction with the second flange 61. The fourth through hole 62 allows the gasket 1 to be inserted and placed between the second capacitor 11 and the second aluminum busbar 14. The third end cap 6 is provided with a fourth positioning hole 63, which guides the insertion of the positive terminal of the second aluminum busbar 14 and the second capacitor 11.

[0029] It also includes a third base 7, the side of which is provided with a third positioning groove 71, and the second flange 61 can be inserted into the third positioning groove 71 to lock the third end cover 6 and the third base 7. The bottom side of the third base 7 is provided with a fourth positioning groove 72 and a fifth positioning groove 73. The fifth positioning groove 73 is used to insert the negative terminal post of the first capacitor 9, and the first aluminum busbar 10 can pass through the fourth positioning groove 72.

[0030] The third base 7, the third end cap 6, and the gasket 1 work together to position and fix the second aluminum busbar 14 of the second capacitor 11 during welding. The first aluminum busbar 10 is positioned by the limiting of the fourth positioning groove 72 and the fifth positioning groove 73. Combined with the limiting of the second flange 61, the fourth through hole 62, the fourth positioning hole 63, and the third positioning groove 71, a fixed angle is formed between the second aluminum busbar 14 and the first aluminum busbar 10, preventing deflection. This fixed angle ensures uniform operating space and process parameters for subsequent processes, guarantees consistent assembly accuracy for each product, and avoids problems such as component interference and incomplete installation caused by process failures and angular deviations.

[0031] Welding of the positive electrode of the second aluminum busbar 14 of the second capacitor 11: Place the pre-connected first capacitor 9 and second capacitor 11 into the third base 7, with the negative electrode of the first capacitor 9 facing downwards. Insert the first aluminum busbar 10 into the fourth positioning groove 72 for positioning. Place the negative electrode post of the first capacitor 9 into the fifth positioning groove 73. Insert the upper end of the second aluminum busbar 14 into the fourth positioning hole 63. Then, fit the second aluminum busbar 14 onto the positive electrode post of the second capacitor 11. The second aluminum busbar 14 needs to have a 1mm gap with the upper surface of the second capacitor 11. While fixing the second aluminum busbar 14 with the third end cap 6, place the gasket 1 between the second aluminum busbar 14 and the second capacitor 11 through the fourth through hole 62. Then, insert the second flange 61 into the third positioning groove 71 for fixing and positioning. Finally, use a handheld laser welder to weld the second aluminum busbar 14. After welding, remove the fixture.

[0032] This utility model's technical solution achieves precise positioning of the capacitor and aluminum busbar by setting through holes, positioning grooves, and flanges, thereby ensuring welding quality. Its tooling design forms a fixed angle between the aluminum busbar and the capacitor, effectively avoiding component interference and improper installation. The modular structure design facilitates assembly and disassembly, significantly improving production efficiency. The fixed angle and positioning method ensure consistent assembly precision for each product, thereby improving overall quality.

[0033] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A cylindrical CTS start-stop capacitor handheld welding fixture, characterized in that, include: The docking seat (8) has a first groove (82) and a second groove (83) on it. A fastening plate (81) is installed between the first groove (82) and the second groove (83). A welding groove (85) is provided on the fastening plate (81). A fixing groove (84) is also provided on the docking seat (8). The fixing groove (84) and the welding groove (85) are arranged opposite to each other.

2. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 1, characterized in that, Also includes: Gasket (1) is U-shaped and 1mm thick; The first base (2) is used to place the first capacitor (9) and keep the first capacitor (9) vertical; the bottom side of the first base (2) is provided with a first through hole (21). The first end cap (4) is used to position the first four-claw aluminum strip (12); the first end cap (4) is provided with a second through hole (42) and four evenly distributed first positioning holes (41).

3. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 1, characterized in that, Also includes: The second base (3) has a first positioning groove (31) on its side and a second positioning groove (33) on its bottom side for fixing the first aluminum busbar (10) and placing the positive electrode post of the first capacitor (9). The second end cap (5) has a third through hole (54) and four evenly distributed second positioning holes (52) on its upper surface. A third positioning hole (53) is provided between two adjacent second positioning holes (52). A first flange (51) is provided on the outer side of the second end cap (5). The first flange (51) is connected to the third positioning hole (53). The first flange (51) can be inserted into the first positioning groove (31).

4. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 1, characterized in that, Also includes: The third end cap (6) has a second flange (61) on its outer side and a fourth through hole (62) at the junction with the second flange (61). The fourth through hole (62) allows the pad (1) to be inserted and placed on the second capacitor (11). The third end cap (6) has a fourth positioning hole (63) on its top. The third base (7) has a third positioning groove (71) on its side and a fourth positioning groove (72) and a fifth positioning groove (73) on its bottom side.

5. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 1, characterized in that, The docking seat (8) is used for positioning and fixing the first four-jaw aluminum busbar (12) and the second four-jaw aluminum busbar (13) during the welding of the claws together.

6. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 2, characterized in that, The gasket (1) and the first base (2) are used together for positioning the first aluminum busbar (10) of the negative electrode of the first capacitor (9) for welding.

7. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 2, characterized in that, The first end cap (4) is used in conjunction with the first base (2) for positioning the first four-claw aluminum busbar (12) of the negative electrode of the second capacitor (11) during welding.

8. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 3, characterized in that, The second base (3) and the second end cap (5) are used together for positioning and fixing the positive electrode of the first capacitor (9) during the welding of the second four-claw aluminum busbar (13).

9. The cylindrical CTS start-stop capacitor handheld welding fixture according to claim 4, characterized in that, The third base (7), the third end cap (6) and the gasket (1) are used together for positioning and fixing the positive electrode second aluminum busbar (14) of the second capacitor (11) during welding.

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