Welding equipment with testing function for battery cap

Abstract

The invention relates to the technical field of battery production, in particular to battery cap welding equipment with a testing function, which comprises a welding table, a grabbing head, a rotating seat, an angle adjusting assembly, a direction adjusting assembly and a testing assembly. The angle of the battery cap can be adjusted according to the angle of the tab to be welded, so that the angle of the battery cap is parallel to the angle of the tab, welding is performed in a parallel state, the tab can be prevented from being bent, the bending frequency is reduced, the process of adjusting the angle of the battery cap is divided into two parts, and the welding efficiency is improved. The first part is used for adjusting the angle of the battery cover cap in the vertical direction, and the second part is used for adjusting the angle of the battery cover cap in the horizontal direction, so that 360-degree all-directional angle adjustment on the battery cover cap is realized, and the battery cover cap can be matched with a tab at any angle for use; and after welding is completed, the battery cover cap is moved to the test clamp, and the firmness of the welding position of the battery cover cap is tested, so that the qualified rate of machined products is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, in particular to a battery cap welding device with a testing function. Background Art

[0002] The battery cap is a small raised metal cap or plastic cap on the battery. Its main function is to provide a closed function for the battery and ensure the integrity and safety of the internal structure of the battery. It also acts as a safety valve to prevent excessive pressure inside the battery and cut off the working current when the battery is overheated or overcharged to prevent battery damage and fire. In addition, the battery cap also serves as the positive or negative conductive terminal of the battery to ensure the normal operation of the battery.

[0003] When the cap is connected to the ear, the prior art is to adjust the ear and the cap to be vertically distributed, and then weld the two together by spot welding. However, in actual operation, since the ear material is relatively soft, the angle of the ear itself is easily offset, which requires the ear to be bent once, and then welded to the cap after its angle is corrected. However, in the process after welding, the cap needs to be adjusted to a position horizontal with the end of the battery cell. During this adjustment process, the ear needs to be bent a second time. Since the ear material is relatively soft, if the ear is repeatedly bent once and twice, it is very easy to cause the ear to break, affecting the use effect of the ear. Therefore, how to reduce the number of bending times of the ear is an urgent problem to be solved. Summary of the invention

[0004] The object of the present invention is to provide a battery cap welding device with a testing function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding device for a battery cap with a testing function, comprising a welding table, a work station disk, a feed track and a grabbing head, the work station disk is rotatably arranged on the top of the welding table, the work station disk is provided with a welding groove for placing the battery cell, the feed track is used to convey the battery cap, and the grabbing head is used to grab the battery cap; and a rotating seat, the rotating seat is arranged on the top of the welding table, a rotatably connected connecting rod is provided on the side wall of the rotating seat, one end of the connecting rod extends to the outside of the rotating seat and is connected to an angle adjustment component, the angle adjustment component is connected to the grabbing head, and the angle adjustment component is used to adjust the angle of the battery cap; a direction adjustment component is provided inside the rotating seat, and the direction adjustment component is used to adjust the angle of the connecting rod; and a testing component, the testing component is arranged on the welding table, and the testing component is used to perform a welding firmness test on the welded battery cap.

[0006] Furthermore, the grabbing head includes a suction cup, which is used to absorb the battery cap. A connecting block is provided at the end of the suction cup, and a hinged connecting seat is provided on the connecting block. The connecting seat is connected to the angle adjustment assembly.

[0007] Furthermore, the angle adjustment assembly includes a connecting plate, which is fixedly connected to the end of the connecting rod, and an electric telescopic rod 1 and an electric telescopic rod 2 are provided on the connecting plate, and the ends of the electric telescopic rod 1 and the electric telescopic rod 2 are respectively connected to the connecting seat 1.

[0008] Furthermore, the angle adjustment assembly also includes a limit rod 1 and a limit rod 2, one end of the limit rod 1 and the limit rod 2 respectively extend into the interior of the connecting sleeve, and the other end of the limit rod 1 and the limit rod 2 extend to coincide with the adsorption surface of the suction cup, a reset spring 1 is provided inside the connecting sleeve, and the reset spring 1 is used to drive the limit rod 1 and the limit rod 2 to reset, an arc-shaped electromagnet is provided inside the connecting sleeve, an enclosing space is formed between the two arc-shaped electromagnets, and the limit rod 1 and the limit rod 2 are located in the enclosing space.

[0009] Furthermore, the rotating seat includes an upper cover and a seat body, the upper cover matches the seat body, a cavity is formed between the upper cover and the seat body, the seat body is rotatably connected to the welding table and the upper cover, the upper cover is fixed to the welding table through a support rod, and the end of the connecting rod extends into the cavity.

[0010] Furthermore, the direction adjustment assembly includes an adjustment rod, one end of which is fixedly connected to the end of the connecting rod, and the other end of which is elastically hinged to a connecting seat 2. The adjustment rod is provided with a gear 1, and the gear 1 is meshed with a rack 1.

[0011] Furthermore, the outer wall of the upper cover is provided with an electric telescopic rod three, and the end of the electric telescopic rod three is provided with a connecting box, the connecting box is slidably connected to the upper cover, the rack one is slidably embedded in the connecting box, and a return spring two is provided between the inside of the connecting box and the rack one, a magnet sheet one is provided on the top of the rack one, and an electromagnet one is provided inside the connecting box.

[0012] Furthermore, a limiting hole is provided on the side wall of the adjusting rod, a slidingly connected plug rod is provided inside the limiting hole, the end of the plug rod is connected to the third reset spring, an insertion hole matching the plug rod is provided inside the seat body, a magnet sheet 2 is provided at the end of the plug rod, and an electromagnet 2 is provided on the side wall of the upper cover.

[0013] Furthermore, the test assembly includes a test fixture, which is provided with a groove, a slidably connected test block is provided inside the groove, the test block is connected to a reset spring four in the groove, and a slope is provided on the top of the test block, which fits with the outer surface of the battery cap.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can adjust the angle of the battery cap according to the angle of the pole ear to be welded, so that the angle of the battery cap is parallel to the angle of the pole ear. Welding is performed in a parallel state, which can avoid bending of the pole ear, reduce the number of bending times, and avoid breaking of the pole ear. The process of adjusting the angle of the battery cap is divided into two parts. The first part uses the electric telescopic rod 1 and the electric telescopic rod 2 to adjust the angle of the battery cap in the vertical direction, so that the battery cap tilts forward or backward. The second part is to adjust the angle of the battery cap from the horizontal direction by controlling the rotation of the adjustment rod, so that the battery cap can be adjusted in an all-round way of 360 degrees, ensuring that the battery cap can be used with pole ears at any angle; and after the welding is completed, the battery cap is moved to the test fixture to test the firmness of the welding part of the battery cap to ensure the qualified rate of the processed products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention from another angle;

[0019] Figure 4 For the present invention Figure 2 The enlarged structural intention at B in the middle;

[0020] Figure 5 It is a schematic diagram of the main cross-sectional structure of the present invention as a whole;

[0021] Figure 6 For the present invention Figure 5 The enlarged structural intention at C in the middle;

[0022] Figure 7 For the present invention Figure 5 The enlarged structural intention at D in the middle;

[0023] Figure 8 For the present invention Figure 7 The enlarged structural intention at E in the middle;

[0024] Fig. 9 It is a schematic diagram of a top cross-sectional structure of a rotating seat of the present invention;

[0025] In the figure: 1. welding table; 2. work station plate; 3. feeding track; 4. grab head; 41. suction cup; 42. connecting block 1; 43. connecting seat 1; 5. welding groove; 6. rotating seat; 61. upper cover; 62. seat body; 7. connecting rod; 8. angle adjustment assembly; 81. connecting plate; 82. electric telescopic rod 1; 83. electric telescopic rod 2; 84. limit rod 1; 85. limit rod 2; 86. connecting sleeve; 87. reset spring 1; 88. arc electromagnet; 9. direction adjustment group Parts; 91, adjustment rod; 92, connecting seat 2; 93, gear 1; 94, rack 1; 95, electric telescopic rod 3; 96, connecting box; 97, reset spring 2; 98, magnet sheet 1; 99, electromagnet 1; 910, limit hole; 911, plug-in rod; 912, reset spring 3; 913, insertion hole; 914, magnet sheet 2; 915, electromagnet 2; 10, test assembly; 101, test fixture; 102, test block; 103, reset spring 4; 104, inclined plane. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example: Figure 1-Figure 9 As shown, the present invention provides a battery cap welding device with a testing function, comprising a welding table 1, a work station disc 2, a feed track 3 and a grab head 4, wherein the work station disc 2 is rotatably arranged on the top of the welding table 1, the work station disc 2 is provided with a welding groove 5 for placing a battery cell, the feed track 3 is used to transport the battery cap, and the grab head 4 is used to grab the battery cap; and a rotating seat 6, the rotating seat 6 is arranged on the top of the welding table 1, and a rotatably connected connecting rod 7 is provided on the side wall of the rotating seat 6, one end of the connecting rod 7 extends to the outside of the rotating seat 6 and is connected to an angle adjustment component 8, the angle adjustment component 8 is connected to the grab head 4, and the angle adjustment component 8 is used to adjust the angle of the battery cap; a direction adjustment component 9 is provided inside the rotating seat 6, and the direction adjustment component 9 is used to adjust the angle of the connecting rod 7; and a testing component 10, the testing component 10 is arranged on the welding table 1, and the testing component 10 is used to perform a welding firmness test on the battery cap after welding.

[0028] The grabbing head 4 includes a suction cup 41, and the suction cup 41 is used to absorb the battery cap. A connecting block 42 is provided at the end of the suction cup 41, and a hinged connecting seat 43 is provided on the connecting block 42. The connecting seat 43 is connected to the angle adjustment component 8. Specifically, the suction cup 41 adopts an automatic suction cup 41, and the suction cup 41 produces adsorption on the battery cap, so that the battery cap can be grabbed, and the battery cap is grabbed from the feed track 3 to the welding groove 5. The angle adjustment component 8 adjusts the angle of the battery cap by adjusting the angle of the suction cup 41.

[0029] The angle adjustment assembly 8 includes a connecting plate 81, which is fixedly connected to the end of the connecting rod 7. An electric telescopic rod 1 82 and an electric telescopic rod 2 83 are provided on the connecting plate 81. The ends of the electric telescopic rod 1 82 and the electric telescopic rod 2 83 are respectively connected to the connecting seat 1 43. Specifically, when the electric telescopic rod 1 82 is started, the electric telescopic rod 1 82 will drive one of the connecting seats 1 43 to move. When the electric telescopic rod 2 83 is started, the electric telescopic rod 2 83 will drive the other connecting seat 1 43 to move. The connecting seat 1 43 can drive the suction cup 41 to move. When it is necessary to adjust the angle of the battery cap, the moving distances of the two suction cups 41 can be controlled to be different. At this time, if the end faces of the two suction cups 41 are regarded as two points, the line connecting the two points forms an oblique line. Since the adsorption points of the two suction cups 41 on the battery cap are located on both sides of the center of the cap, the battery cap can be tilted. The angle of the battery cap is adjusted to make it parallel to the pole ear. The moving distances of the two suction cups 41 can be controlled according to the inclination angle of the pole ear.

[0030] The angle adjustment assembly 8 also includes a limit rod 1 84 and a limit rod 2 85, one end of each of the limit rod 1 84 and the limit rod 2 85 extends to the inside of the connecting sleeve 86 respectively, and the other end of each of the limit rod 1 84 and the limit rod 2 85 extends to coincide with the adsorption surface of the suction cup 41, a return spring 1 87 is provided inside the connecting sleeve 86, and the return spring 1 87 is used to drive the limit rod 1 84 and the limit rod 2 85 to reset, and an arc-shaped electromagnet 88 is provided inside the connecting sleeve 86, and an enclosing space is formed between the two arc-shaped electromagnets 88, and the limit rod 1 84 and the limit rod 2 85 are located in the enclosing space. Specifically, when the electric telescopic rod 1 82 and the electric telescopic rod 2 83 are used to adjust the angle of the battery cap, in the process of the battery cap changing the angle, it will generate a force on the limit rod 1 84 and the limit rod 2 85, so that the limit rod 1 84 and the limit rod 2 8 5 moves inside the connecting sleeve 86, at this time, the reset spring 1 87 is deformed, and when the angle adjustment of the battery cap is completed, the arc electromagnet 88 can be energized at this time, so that the two arc electromagnets 88 are energized to generate magnetism, and the two are attracted to the middle and close together. An anti-skid pad is provided on the inner surface of the arc electromagnet 88. The arc electromagnet 88 moves inward to clamp and fix the limit rod 1 84 and the limit rod 2 85, so that their positions are fixed. At this time, the ends of the limit rod 1 84 and the limit rod 2 85 are in contact with the battery cap, and the battery cap is limited to ensure that the battery cap does not shake during the welding process, and the stability of the battery cap during welding is improved. After the welding is completed, the limiting effect of the limit rod 1 84 and the limit rod 2 85 is released. At this time, under the action of the reset spring 1 87, the limit rod 1 84 and the limit rod 2 85 will have an ejection effect on the battery cap, so that it is separated from the suction cup 41, and the welding operation is completed.

[0031] The rotating seat 6 includes an upper cover 61 and a seat body 62, the upper cover 61 matches the seat body 62, a cavity is formed between the upper cover 61 and the seat body 62, the seat body 62 is rotatably connected to the welding table 1 and the upper cover 61, wherein a driving motor is provided on the welding table 1, the output shaft of the driving motor is connected to the seat body 62, the driving motor can drive the seat body 62 to rotate, the upper cover 61 is fixed to the welding table 1 through a supporting rod, and the end of the connecting rod 7 extends into the cavity, specifically, when the seat body 62 rotates, the upper cover 61 does not rotate, and the connecting rod 7 is also rotatably connected to the seat body 62, and it will rotate with the rotation of the seat body 62.

[0032] The direction adjustment component 9 includes an adjustment rod 91, one end of which is fixedly connected to the end of the connecting rod 7, and the other end of which is elastically hinged to the connecting seat 2 92. The elastic hinge here is that the adjustment rod 91 is hinged to the connecting seat 2 92, and a torsion spring is provided between the two to reset the adjustment rod 91. A gear 1 93 is sleeved on the adjustment rod 91, and the gear 1 93 is meshed with a rack 1 94. Specifically, when the connecting rod 7 rotates with the seat body 62, the adjustment rod 91 will be driven to rotate, and at this time the adjustment rod 91 will drive the gear 1 93 to move. When the gear 1 93 moves below the rack 1 94, the rack 1 94 is controlled to move. The movement can drive the gear 1 93 to rotate, thereby driving the adjusting rod 91 to rotate. The adjusting rod 91 will drive the two suction cups 41 to rotate with the connecting rod 7 as the center of the circle. The suction cup 41 drives the adsorbed battery cap to rotate, thereby changing the angle of the battery cap on the two-dimensional plane, that is, facing the battery cap, adjusting its angle on the horizontal plane, and the limiting rod 1 84 and the limiting rod 2 85 are used to adjust the change in the vertical direction, so that the angle of the battery cap can be adjusted 360 degrees in an all-round way to ensure that it can be welded with pole ears of various angles. After the battery cap is separated, under the action of the torsion spring, the adjusting rod 91 is automatically reset, thereby driving the suction cup 41 to reset, and continuing the welding operation of the next battery cap.

[0033] The outer wall of the upper cover 61 is provided with an electric telescopic rod 3 95, and the end of the electric telescopic rod 3 95 is provided with a connecting box 96, and the connecting box 96 is slidably connected to the upper cover 61. The rack 1 94 is slidably embedded in the connecting box 96, and a return spring 2 97 is provided between the inside of the connecting box 96 and the rack 1 94. A magnet sheet 1 98 is provided on the top of the rack 1 94, and an electromagnet 1 99 is provided inside the connecting box 96. Specifically, when the gear 1 93 moves to the bottom of the rack 1 94, the gear 1 When the electromagnet 99 is powered on, the magnet sheet 98 is adsorbed, and the rack 94 is adsorbed into the connection box 96, so that the rack 94 and the gear 93 can be separated and the meshing state can be released.

[0034] The side wall of the adjusting rod 91 is provided with a limiting hole 910, a slidingly connected plug rod 911 is provided inside the limiting hole 910, the end of the plug rod 911 is connected to a reset spring 3 912, an insertion hole 913 matching the plug rod 911 is provided inside the seat body 62, a magnet sheet 2 914 is provided at the end of the plug rod 911, and an electromagnet 2 915 is provided on the side wall of the upper cover 61. Specifically, when the seat body 62 is moving normally, one end of the plug rod 911 extends into the insertion hole 913, and when the rack 1 94 and the gear 1 93 are meshed, the magnet sheet 2 914 is located directly below the electromagnet 2 915, and the When the electromagnet 915 is energized, it generates magnetism on the magnet sheet 914, thereby sucking the plug rod 911 upward and pulling it out of the insertion hole 913, releasing the limiting state of the two. At this time, the adjusting rod 91 can rotate, and as the seat body 62 continues to move, the adsorption force generated by the electromagnet 915 on the magnet sheet 914 is weakened, or the power is directly cut off to release the adsorption effect. At this time, under the action of the reset spring 912, the plug rod 911 will automatically move out of the limiting hole 910. When the adjusting rod 91 automatically resets to the initial state, the plug rod 911 will extend into the insertion hole 913 again, generating a limiting effect on the adjusting rod 91 again.

[0035] The test assembly 10 includes a test fixture 101, a groove is provided on the test fixture 101, a test block 102 with a sliding connection is provided inside the groove, the test block 102 is connected to a reset spring 103 in the groove, a slope 104 is provided on the top of the test block 102, and the slope 104 is in contact with the outer surface of the battery cap. Specifically, after the battery cap and the pole ear are welded together, the combined two are continued to move. During the movement, the battery cap will pass through the test block 102. Since the highest point of the test block 102 is high At the bottom of the battery cap, and the lowest point of the test block 102 is lower than the bottom of the battery cap, the battery cap will gradually move above the test block 102 and generate pressure on the test block 102, thereby deforming the reset spring four 103. In this process, the test block 102 will also generate a reaction force on the battery cap to push the battery cap upwards, and perform a welding strength test on the welding point of the battery cap. At this time, if the welding point is not firm, the battery cap and the pole ear can be separated. If it is firm, it will not be separated, thus completing the firmness test of the battery cap welding point.

[0036] Working principle: Use the suction cup 41 to grab the pole ear in the feeding track 3 and grab it to the groove with welding. At this time, the battery cell with the pole ear is placed in the groove. According to the angle of the pole ear, the angle of the battery cap is adjusted to make the angle of the battery cap parallel to the angle of the pole ear. Welding is performed in a parallel state to avoid bending of the pole ear and reduce the number of bending times. The method for obtaining the pole ear angle can be obtained through image analysis of the image acquisition device, and the process of adjusting the angle of the battery cap is divided into two parts. The first part uses the electric telescopic rod 1 82 and the electric telescopic rod 2 83 to adjust the angle of the battery cap in the vertical direction so that the battery cap tilts forward or backward. The second part is to adjust the angle of the battery cap from the horizontal direction by controlling the rotation of the adjustment rod 91, so that the battery cap can be adjusted in all directions of 360 degrees; after the angle is adjusted and the welding is completed, the battery cap is moved to the test fixture 101 to test the firmness of the battery cap welding to ensure the qualified rate of the processed products.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A battery cap welding device with a testing function, characterized in that: The invention comprises a welding table (1), a work station plate (2), a material conveying track (3) and a grabbing head (4); the work station plate (2) is rotatably arranged on the top of the welding table (1); a welding groove (5) for placing a battery cell is provided on the work station plate (2); the material conveying track (3) is used for conveying a battery cap; and the grabbing head (4) is used for grabbing the battery cap; and a rotating seat (6), the rotating seat (6) being arranged on the top of the welding table (1), a connecting rod (7) being rotatably connected being arranged on the side wall of the rotating seat (6), one end of the connecting rod (7) extending to the outside of the rotating seat (6) and being connected to an angle adjustment component (8), the angle adjustment component (8) being connected to the grabbing head (4), and the angle adjustment component (8) being used to adjust the angle of the battery cap; A direction adjustment component (9) is provided inside the rotating seat (6), and the direction adjustment component (9) is used to adjust the angle of the connecting rod (7); And a test component (10), wherein the test component (10) is arranged on the welding table (1), and the test component (10) is used to perform a welding firmness test on the welded battery cap.

2. The battery cap welding device with testing function according to claim 1, characterized in that: The grab head (4) comprises a suction cup (41) for adsorbing the battery cap, a connecting block (42) is provided at the end of the suction cup (41), a hinged connecting seat (43) is provided on the connecting block (42), and the connecting seat (43) is connected to the angle adjustment component (8).

3. The battery cap welding device with testing function according to claim 1, characterized in that: The angle adjustment assembly (8) comprises a connecting plate (81), the connecting plate (81) being fixedly connected to the end of the connecting rod (7), the connecting plate (81) being provided with an electric telescopic rod 1 (82) and an electric telescopic rod 2 (83), the ends of the electric telescopic rod 1 (82) and the ends of the electric telescopic rod 2 (83) being respectively connected to the connecting seat 1 (43).

4. The battery cap welding device with testing function according to claim 3, characterized in that: The angle adjustment assembly (8) further comprises a limiting rod 1 (84) and a limiting rod 2 (85), one end of each of the limiting rod 1 (84) and the limiting rod 2 (85) respectively extending into the interior of the connecting sleeve (86), and the other end of each of the limiting rod 1 (84) and the limiting rod 2 (85) extending to overlap with the adsorption surface of the suction cup (41), a reset spring 1 (87) is arranged inside the connecting sleeve (86), and the reset spring 1 (87) is used to drive the limiting rod 1 (84) and the limiting rod 2 (85) to reset, and an arc-shaped electromagnet (88) is arranged inside the connecting sleeve (86), and an enclosing space is formed between the two arc-shaped electromagnets (88), and the limiting rod 1 (84) and the limiting rod 2 (85) are located in the enclosing space.

5. The battery cap welding device with testing function according to claim 1, characterized in that: The rotating seat (6) comprises an upper cover (61) and a seat body (62); the upper cover (61) matches the seat body (62); a cavity is formed between the upper cover (61) and the seat body (62); the seat body (62) is rotatably connected to the welding platform (1) and the upper cover (61); the upper cover (61) is fixed to the welding platform (1) via a support rod; and the end of the connecting rod (7) extends into the cavity.

6. The battery cap welding device with testing function according to claim 5, characterized in that: The direction adjustment component (9) comprises an adjustment rod (91), one end of the adjustment rod (91) is fixedly connected to the end of the connecting rod (7), the other end of the adjustment rod (91) is elastically hinged to a second connecting seat (92), and a gear (93) is sleeved on the adjustment rod (91), and the gear (93) is meshed with a rack (94).

7. The battery cap welding device with testing function according to claim 6, characterized in that: The outer wall of the upper cover (61) is provided with an electric telescopic rod three (95), the end of the electric telescopic rod three (95) is provided with a connection box (96), the connection box (96) is slidably connected to the upper cover (61), the rack one (94) is slidably embedded in the connection box (96), a return spring two (97) is provided between the inside of the connection box (96) and the rack one (94), a magnet sheet one (98) is provided on the top of the rack one (94), and an electromagnet one (99) is provided inside the connection box (96).

8. The battery cap welding device with testing function according to claim 6, characterized in that: A limit hole (910) is provided on the side wall of the adjusting rod (91), a slidingly connected plug rod (911) is provided inside the limit hole (910), the end of the plug rod (911) is connected to a third return spring (912), an insertion hole (913) matching the plug rod (911) is provided inside the seat body (62), a second magnet sheet (914) is provided at the end of the plug rod (911), and a second electromagnet (915) is provided on the side wall of the upper cover (61).

9. The battery cap welding device with testing function according to claim 1, characterized in that: The test assembly (10) comprises a test fixture (101), wherein a groove is provided on the test fixture (101), a slidably connected test block (102) is provided inside the groove, the test block (102) is connected to a return spring (103) in the groove, and a slope (104) is provided on the top of the test block (102), and the slope (104) is in contact with the outer surface of the battery cap.

Images