Power-up tool of series welding machine and series welding machine

Abstract

The utility model provides a power-up tool of a series welding machine and the series welding machine. The power-up tool comprises a substrate; the driving device and the power-up seat are arranged on the substrate; the clamping jaw is connected with the driving device and rotationally connected to the power-up seat; the driving device can drive the clamping jaw to rotate so that the clamping jaw can be close to or away from the power-up block on the power-up base. Therefore, on the first aspect, the structure is optimized, and the material quantity is reduced; secondly, operation steps are reduced; thirdly, the operation steps are reduced, so that the detection time can be shortened, and the processing rhythm is improved; and fourthly, due to the fact that the machining rhythm is improved, abnormal behaviors such as over-welding of the battery pieces are reduced, and the yield of the batteries welded by the series welding machine can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment, specifically to an electrical tooling for a string welding machine and the string welding machine itself. Background Technology

[0002] String welding machines are essential automated equipment in the photovoltaic module production process. They use mechanical transmission mechanisms to transport solar cells and weld them onto a heated base plate using high-temperature gas from hot air ducts. The electrical fixtures on the string welding machine can press the welding strips and apply electricity to perform electroluminescence (EL) testing to determine if there are any defects in the solar cells, thereby controlling quality.

[0003] However, the electrical welding fixtures in related technologies are quite complex, resulting in numerous action steps and a long testing cycle. Excessively long testing cycles can easily lead to abnormalities such as over-soldering of battery cells. Utility Model Content

[0004] The present invention provides an electrical welding fixture for a string welding machine and a string welding machine, which can optimize the structure of the electrical welding fixture, reduce the action rhythm, and improve the cycle time.

[0005] In a first aspect, this utility model discloses an electrical welding fixture for a string welding machine, comprising: a base plate; a driving device and an electrical base both disposed on the base plate; a clamp connected to the driving device and rotatably connected to the electrical base; the driving device is capable of driving the clamp to rotate so that the clamp approaches or moves away from the electrical block on the electrical base.

[0006] Optionally, the driving device includes: a cylinder disposed on the substrate; a piston rod disposed on the cylinder; a connecting rod rotatably connected to the piston rod; a gripper rotatably connected to the connecting rod; the cylinder is capable of driving the piston rod to extend so that the gripper rotates and approaches the power-on block on the power-on base, and the cylinder is capable of driving the piston rod to retract so that the gripper rotates and moves away from the power-on block on the power-on base.

[0007] Optionally, the gripper includes a first extension and a second extension with different extension paths. The first extension is rotatably connected to the connecting rod and the power supply base, respectively, and the second extension can rotate with the gripper to approach the power supply block.

[0008] Optionally, the second extension is provided with a contact that can rotate with the gripper to approach the energizing block.

[0009] Optionally, the substrate is located between the cylinder and the power supply base; the cylinder and the power supply base are offset from each other along the height direction of the substrate.

[0010] Optionally, the power supply base includes a connecting portion for connecting to the substrate, and an extension portion offset from the substrate along the height direction of the substrate; the grippers are rotatably connected to the extension portion of the power supply base.

[0011] Optionally, the gripper is rotatably connected to both sides along its own length direction and to both sides of the power supply base along its own length direction, and the middle part of the gripper is rotatably connected to the connecting rod.

[0012] Optionally, the length direction of the power supply base is consistent with the width direction of the substrate, and the length of the power supply base is greater than the width of the substrate.

[0013] Optionally, the substrate is provided with a suction cup.

[0014] Secondly, this utility model discloses a string welding machine, including an electrical welding fixture.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model discloses an electrical welding fixture for a string welding machine, comprising: a base plate; a driving device and an electrical base both disposed on the base plate; a clamp connected to the driving device and rotatably connected to the electrical base; the driving device can drive the clamp to rotate so that the clamp approaches or moves away from the electrical block on the electrical base.

[0017] It can be seen that the power-on fixture of this utility model has the following advantages:

[0018] Firstly, the structure is optimized to reduce the amount of materials; specifically, compared to related technologies, it does not require two sets of cylinder mechanisms.

[0019] Secondly, the number of operation steps is reduced; specifically, compared with related technologies, the number of operation steps is reduced from 7 to 3.

[0020] Thirdly, based on the second point, the reduced number of operation steps reduces the detection time and increases the processing cycle time. According to actual work statistics, the detection time is reduced from 3.5s to 1.3s.

[0021] Fourthly, based on the third aspect, the increased processing cycle time also reduces abnormal behaviors such as over-soldering of battery cells, which helps to improve the yield of batteries welded by the stringer. Attached Figure Description

[0022] The above-described features and advantages of this invention can be better understood after reading the following detailed description of the embodiments of this disclosure in conjunction with the accompanying drawings. In the drawings, the components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0023] Figure 1 This is a structural diagram of the electrical welding fixture in related technologies;

[0024] Figure 2 This is a schematic diagram of a gripper separation and energizing block according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a gripper approaching a power-generating block according to an embodiment of this utility model;

[0026] Figure 4 This is a utility model Figure 2 Top view;

[0027] Figure 5 This is a schematic diagram of another embodiment of the gripper separation and energizing block of this utility model;

[0028] Figure 6 This is a schematic diagram of the gripper approaching the power-on block in another embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Substrate,

[0031] 210 - Cylinder, 220 - Piston rod, 230 - Connecting rod, 240 - Universal joint

[0032] 310-Power-on socket, 320-Power-on block

[0033] 400-gripper,

[0034] 410 - First extension, 420 - Second extension, 421 - First sub-extension, 422 - Second sub-extension, 430 - Contact

[0035] 500-suction cup,

[0036] 610 - First cylinder, 620 - First piston rod

[0037] 630 - Second cylinder, 640 - Second piston rod

[0038] 700-Pressure Plate

[0039] 800-Conductive tooling. Detailed Implementation

[0040] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0041] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be used as a limitation on the scope of protection of this utility model.

[0042] Figure 1 This is a structural diagram of an electrical application fixture in related technologies. The electrical application fixture in these technologies has a relatively complex structure. Specifically, a first cylinder 610 and a conductive fixture 800 are mounted on the substrate 100. The first cylinder 610 is sequentially connected to a first piston rod 620, a second cylinder 630, a second piston rod 640, and a pressure plate 700. The first cylinder 610 drives the first piston rod 620 to extend and retract along the X-axis, and the second cylinder 630 drives the second piston rod 640 to extend and retract along the Z-axis. When electroluminescence (EL) detection is required on the battery string, the following operating steps are followed:

[0043] Step S100: The second cylinder 630 drives the second piston rod 640 to extend, thereby moving the pressure plate 700 away from the substrate 100 and causing the pressure plate 700 to be offset from the conductive tooling 800 along the X-axis.

[0044] Step S200: The first cylinder 610 drives the first piston rod 620 to retract, so as to adjust the pressure plate 700 to be flush with the conductive tooling 800 along the Z-axis.

[0045] Step S300: The second cylinder 630 drives the second piston rod 640 to retract, so as to move the pressure plate 700 closer to the conductive tooling 800, so as to press the welding strip between the pressure plate 700 and the conductive tooling 800.

[0046] Step S400: Power on to complete EL detection.

[0047] Step S500: The second cylinder 630 drives the second piston rod 640 to extend, thereby moving the pressure plate 700 away from the conductive tooling 800 and releasing the welding strip.

[0048] Step S600: The first cylinder 610 drives the first piston rod 620 to extend, so as to adjust the pressure plate 700 to be offset from the conductive tooling 800 along the Z-axis.

[0049] Step S700: The second cylinder 630 drives the second piston rod 640 to retract, thereby moving the pressure plate 700 closer to the substrate 100 until the pressure plate 700 and the conductive tooling 800 are aligned along the X-axis.

[0050] As can be seen, the electrical welding fixture in the related technologies has a complex structure, resulting in a long cycle time (7 steps are required to complete one EL test) and an excessively long testing cycle, which can easily lead to abnormalities such as over-soldering of battery cells. Therefore, to address the problems in the related technologies, this utility model optimizes the structure of the electrical welding fixture, which will be described in detail below.

[0051] Example 1

[0052] Figure 2This is a schematic diagram of a gripper separation and energizing block according to an embodiment of the present invention. Figure 3 This is a schematic diagram of a gripper approaching an electrified block according to an embodiment of the present invention. As shown in the figure, the present invention discloses an electrification fixture, including a base plate 100, a driving device 200, an electrification base 310, and grippers 400.

[0053] The substrate 100 is the mounting base of this utility model. The substrate 100 can be a plate-shaped structure with a rectangular cross-section. The driving device 200 and the power supply base 310 are both disposed on the substrate 100. The driving device 200 provides power for the operation of the power supply fixture of this utility model. The power supply base 310 can be energized to realize EL detection. The gripper 400 is used to cooperate with the power supply base 310 to clamp the welding strip. The gripper 400 is rotatably connected to the driving device 200 and the power supply base 310 respectively.

[0054] When this electrical fixture is used to perform EL testing on a battery string, the following operating steps should be followed:

[0055] Step S100: The driving device 200 drives the gripper 400 to rotate close to the power supply block 320 on the power supply base 310, so that the gripper 400 cooperates with the power supply block 320 to complete the clamping of the welding strip, specifically as follows: Figure 3 As shown.

[0056] Step S200: Power on to complete EL detection.

[0057] Step S300: The driving device 200 drives the gripper 400 to rotate away from the power-applying block 320 on the power-applying base 310, thereby releasing the solder strip between the gripper 400 and the power-applying block 320, specifically as follows: Figure 2 As shown.

[0058] It can be seen that, compared with the electrical welding fixtures in related technologies, the electrical welding fixture of this utility model has the following advantages:

[0059] Firstly, the structure is optimized to reduce the amount of materials; specifically, compared to related technologies, it does not require two sets of cylinder mechanisms.

[0060] Secondly, the number of operation steps is reduced; specifically, compared with related technologies, the number of operation steps is reduced from 7 to 3.

[0061] Thirdly, based on the second point, the reduced number of operation steps reduces the detection time and increases the processing cycle time. According to actual work statistics, the detection time is reduced from 3.5s to 1.3s.

[0062] Fourthly, based on the third point, the increased processing cycle time reduces abnormal behaviors such as over-soldering of battery cells, which helps improve the yield of batteries welded by the stringer.

[0063] Optionally, the specific structure of the drive device 200 can be any power component capable of rotating the gripper 400, such as a motor. However, this utility model sets the drive device 200 as a cylinder mechanism, as follows:

[0064] The driving device 200 includes a cylinder 210, a piston rod 220, and a connecting rod 230. The cylinder 210 is mounted on the substrate 100; the piston rod 220 is movably mounted on the cylinder 210; and the connecting rod 230 is rotatably connected to the piston rod 220. The clamping end of the gripper 400 is used to cooperate with the power-applying block 320 to clamp the welding strip. The middle part of the gripper 400 is rotatably connected to the power-applying base 310, and the end of the gripper 400 away from the clamping end is rotatably connected to the connecting rod 230. Therefore, when this power-applying fixture needs to perform electroluminescence (EL) testing on the battery string, the operation steps are as follows:

[0065] Step S100: The cylinder 210 drives the piston rod 220 to extend, thereby pushing the connecting rod 230 forward and adjusting its posture, so that the gripper 400 rotates to approach the power-applying block 320, so that the gripper 400 cooperates with the power-applying block 320 to complete the clamping of the welding strip, specifically as follows: Figure 3 As shown;

[0066] Step S200: Power on to complete EL detection;

[0067] Step S300: The cylinder 210 drives the piston rod 220 to retract, thereby pushing the connecting rod 230 to move backward and adjust its posture, so that the gripper 400 rotates away from the power-on block 320, thereby releasing the welding strip between the gripper 400 and the power-on block 320.

[0068] Optionally, the gripper 400 adopts a functional design with divided zones, which can more effectively achieve the clamping or release of the solder strip, as detailed below:

[0069] The gripper 400 is irregularly shaped and includes a first extension 410 and a second extension 420 with different extension paths. The extension paths of the first extension 410 and the second extension 420 are both straight paths, and the first extension 410 and the second extension 420 form a "V" shaped gripper.

[0070] The first extension 410 is rotatably connected to the connecting rod 230 and the energizing block 310, respectively, and is used to receive power transmitted by the cylinder 210. The second extension 420 can rotate with the gripper 400 to approach the energizing block 320, thereby clamping the solder strip; the second extension 420 can also rotate with the gripper 400 to move away from the energizing block 320, thereby releasing the solder strip.

[0071] Optionally, the second extension 420 is provided with a contact 430, which is a claw hook located at the end of the second extension 420; the contact 430 can rotate with the gripper 400 to approach the energizing block 320. In this way, when clamping the solder strip, the end face of the contact 430 for contacting the solder strip and the end face of the energizing block 320 for contacting the solder strip can be adjusted to be parallel to each other to ensure effective contact and clamping with the solder strip.

[0072] Optionally, the electrical fixture also includes a universal joint 240, which is ball-jointed to the connecting rod 230 and the piston rod 220 respectively. This allows the connecting rod 230 to rotate arbitrarily in space relative to the piston rod 220, thereby ensuring the flexibility of the connecting rod 230's attitude adjustment.

[0073] Optionally, the base plate 100 is located between the cylinder 210 and the power supply base 310; along the Z-axis direction (the Z-axis is the height direction of the base plate 100, where the X and Y axes, the X and Z axes, and the Y and Z axes are all perpendicular to each other), the cylinder 210 and the power supply base 310 are offset from each other. This allows the cylinder 210 and the power supply base 310 to be spaced further apart, thereby ensuring that the piston rod 220 has sufficient stroke to extend and retract, ensuring that the gripper 400 can rotate into position.

[0074] Optionally, the power supply base 310 includes a connecting portion connected to the substrate 100 and an extension portion offset from the substrate 100 along the Z-axis; the gripper 400 is rotatably connected to the extension portion of the power supply base 310. By offsetting the power supply base 310 and the substrate 100, the gripper 400 can be moved as far away from the substrate 100 as possible, thereby providing sufficient movement space for the gripper 400 and preventing the substrate 100 from interfering with the rotation of the gripper 400.

[0075] Optionally, the substrate 100 is provided with a suction cup 500, which is disposed on the same side as the power supply base 310. When the gripper 400 and the power supply block 320 hold the solder strip, the suction cup 500 will adsorb the solar cell to ensure that the solar cell is fixed in position. Furthermore, multiple suction cups 500 are arranged along the X-axis (the X-axis is the length direction of the substrate 100) to improve the adsorption capacity for the solar cell.

[0076] Figure 4 This is a utility model Figure 2As shown in the top view, the gripper 400 and the power supply base 310 are rotatably connected along their respective lengths, with the lengths of both the gripper 400 and the power supply base 310 along the Y-axis. The middle part of the gripper 400 is rotatably connected to the connecting rod 230. This layout ensures the stability of the connection between the gripper 400 and the power supply base 310.

[0077] Optionally, the length direction of the power supply base 310 and the width direction of the substrate 100 are the same, that is, both are along the Y-axis direction; the length of the power supply base 310 is greater than the width of the substrate 100, so that the power supply base 310 has enough space to set the connection point with the gripper 400.

[0078] Example 2

[0079] Figure 5 This is a schematic diagram of another embodiment of the gripper separation and energizing block of this utility model. Figure 6 This is a schematic diagram of the gripper approaching the power-generating block in another embodiment of the present invention. The main difference from Embodiment 1 lies in the different structure of the gripper 400, as detailed below:

[0080] The extension path of the first extension 410 is a straight line, and the extension path of the second extension 420 is a broken line. Specifically, the second extension 420 includes a first sub-extension 421 and a second sub-extension 422. The first extension 410 is parallel to the second sub-extension 422. The first sub-extension 421 connects the first extension 410 and the second sub-extension 422 respectively, while the first sub-extension 421 and the first extension 410, and the first sub-extension 421 and the second extension 422 are perpendicular to each other. The contact 430 is a protrusion provided at the end of the second extension 420.

[0081] It can be seen that the present invention does not limit the specific shape of the gripper 400, as long as it can rotate under the driving action of the cylinder 210, thereby achieving the clamping of the welding strip.

[0082] Example 3

[0083] This utility model also discloses a string welding machine, which includes an electrical fixture. The string welding machine uses a mechanical transmission mechanism to transport the battery cells and uses high-temperature gas from a hot air duct on a heated base plate to weld the battery cells; at the same time, the electrical fixture can press the welding strip and apply electricity to complete electroluminescence (EL) detection to determine whether there are defects in the battery cells.

[0084] As described above, compared with related technologies, the electrical welding fixture of this utility model reduces the number of operation steps, increases the processing cycle, and reduces the probability of abnormal behaviors such as battery over-soldering, thereby controlling the welding quality of the string welding machine.

[0085] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible variations and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. An electrical fixture for a string welding machine, characterized in that, include: substrate(100); A driving device (200) and a power supply base (310) are both provided on the substrate (100); The drive device (200) and the gripper (400) rotatably connected to the power supply base (310) are respectively connected; The drive device (200) can drive the gripper (400) to rotate so that the gripper (400) moves closer to or away from the power supply block (320) on the power supply base (310).

2. The electrical fixture according to claim 1, characterized in that, The drive device (200) includes: A cylinder (210) is provided on the substrate (100); The piston rod (220) is provided in the cylinder (210); A connecting rod (230) rotatably connected to the piston rod (220); The gripper (400) is rotatably connected to the connecting rod (230); The cylinder (210) can drive the piston rod (220) to extend, causing the gripper (400) to rotate and approach the power supply block (320) on the power supply base (310), and The cylinder (210) can drive the piston rod (220) to retract, so that the gripper (400) rotates and moves away from the power supply block (320) on the power supply base (310).

3. The electrical fixture according to claim 2, characterized in that, The gripper (400) includes a first extension (410) and a second extension (420) with different extension paths. The first extension (410) is rotatably connected to the connecting rod (230) and the power supply base (310), respectively. The second extension (420) can rotate with the gripper (400) to approach the power supply block (320).

4. The electrical fixture according to claim 3, characterized in that, The second extension (420) is provided with a contact (430) which is able to rotate with the gripper (400) to approach the energizing block (320).

5. The electrical fixture according to claim 2, characterized in that, The substrate (100) is located between the cylinder (210) and the power supply base (310); Along the height direction of the substrate (100), the cylinder (210) and the power supply base (310) are offset from each other.

6. The electrical fixture according to claim 5, characterized in that, The power supply base (310) includes a connection portion that connects to the substrate (100) and an extension portion that is offset from the substrate (100) along the height direction of the substrate (100); The gripper (400) is rotatably connected to an extension of the power supply base (310).

7. The electrical fixture according to claim 2, characterized in that, The gripper (400) and the power supply base (310) are rotatably connected on both sides along their respective lengths. The middle part of the gripper (400) is rotatably connected to the connecting rod (230).

8. The electrical fixture according to claim 7, characterized in that, The length direction of the power supply base (310) is consistent with the width direction of the substrate (100), and The length of the power supply base (310) is greater than the width of the substrate (100).

9. The electrical fixture according to claim 1, characterized in that, The substrate (100) is provided with a suction cup (500).

10. A string welding machine, characterized in that, The electrical fixture includes any one of claims 1 to 9.

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