Bus bar straightening structure for battery piece welding

Abstract

The utility model belongs to the technical field of battery piece welding, in particular to a bus bar straightening structure for battery piece welding, which comprises a straightening plate, guide structures are symmetrically mounted on two sides of the straightening plate, and a first testing structure, a pressing structure, a rolling structure and a second testing structure are sequentially arranged on the straightening plate along the X direction; the bus bar is pushed along the straightening plate, the position of the bus bar is limited and corrected under the cooperation of the multiple guide structures, and it is guaranteed that the shape of the bus bar is stable when the bus bar passes through pushing; in the pushing process of the bus bar, detection is carried out through the first test structure, the straightness of the bus bar is detected, when the straightness does not reach the standard, straightening is carried out, after straightening, the straightened bus bar is detected through the second test structure, normal use is carried out after detection is qualified, and if detection is unqualified, straightening is carried out again, and manual repairing is carried out. And the straightening state of the bus bar can be better controlled, so that the connection quality of the battery piece can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell welding technology, specifically a busbar straightening structure for battery cell welding. Background Technology

[0002] A busbar is a metal wire used to connect the electrodes of a solar cell to collect current. In a solar panel, each cell has two electrodes, a positive and a negative electrode, and the busbar is welded to these electrodes to form a complete current loop.

[0003] Since busbars are metal wires and are generally flat, they are prone to deformation during storage and transportation. Before use, they need to be straightened. During straightening, they are rolled using rollers. However, the straightening state of the busbars cannot be accurately controlled, resulting in inconsistent quality after straightening. This affects the position of the weld points during welding and can also lead to unstable connections in the solar panel. Therefore, to address the above problems, a busbar straightening structure for solar cell welding is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, and considering the problem that existing equipment uses rollers for straightening during the straightening process, which cannot accurately control the straightening state of the busbars and leads to inconsistent quality of the straightened busbars, this invention proposes a busbar straightening structure for battery cell welding. This structure better controls the straightening state of the busbars to ensure the connection quality of the battery cells.

[0005] The technical solution adopted by this utility model to solve its technical problem is a busbar straightening structure for battery cell welding, including a straightening plate, with guide structures symmetrically installed on both sides of the straightening plate, and a first test structure, a pressing structure, a rolling structure and a second test structure arranged sequentially along the X direction on the straightening plate.

[0006] The first test structure and the second test structure are the same structure. The second test structure includes a third support frame. The top side of the third support frame is provided with a movable hole and a third positioning hole. A movable screw is movably arranged in the movable hole and a third positioning rod is movably arranged in the third positioning hole. A detection roller frame is fixed to the bottom side of the third positioning rod, and the bottom end of the movable screw is fixed at the middle position of the top side of the detection roller frame.

[0007] The first electrode ring is attached to the top of the movable screw, and a movable nut is fixed to the outside of the movable nut.

[0008] The electrode plate has a fixing plate fixed to the top side of the third support frame. The fixing plate has a sliding hole in the middle, and a locking screw is inserted into the sliding hole. One end of the locking screw is equipped with a mounting plate, and the electrode plate is fixed to the side of the mounting plate. A locking nut is rotated to the outside of the other end of the locking screw.

[0009] Preferably, the second test structure further includes a fourth spring, which is fitted onto the bottom of the movable screw, and the two ends of the fourth spring are respectively fixed to the top inner wall of the third support frame and the top side of the test roller frame.

[0010] Preferably, the first electrode ring and the electrode plate are in close contact, and an indicator light is installed on the top side of the third support frame. The first electrode ring, the electrode plate, the indicator light and the power supply are connected in series. When the test is performed through the first test structure and the second test structure, when the return trough passes through, the test roller presses on the busbar to compress the fourth spring. When the busbar is in a qualified straight state, the first electrode ring on the movable nut is in contact with the electrode plate on the mounting plate, and the indicator light is in an energized and flashing state.

[0011] When the busbar is defective, the first electrode ring and electrode plate that were originally aligned with it become misaligned, causing the indicator light to lose power. The control circuit receives the power-off signal from the indicator light and drives the pressing structure at the front end to perform hammering repair. At the rear end, it can distinguish defective busbars.

[0012] Preferably, the pressing structure includes a first support frame, which is fixed to a straightening plate. A first positioning hole and a rod hole are respectively opened on the top side of the first support frame. A first positioning rod is movably inserted into the first positioning hole, and a hollow screw is movably inserted into the rod hole. A pressing plate is fixed to the bottom end of the first positioning rod. A lead screw is rotatably installed on the top middle side of the pressing plate. The top end of the lead screw rotates inside the bottom end of the hollow screw. A pressing cap is fixed to the top end of the hollow screw. A second spring is provided between the pressing cap and the top side wall of the first support frame. A pressing motor is installed on the top side of the first support frame. A cam is installed on the output shaft of the pressing motor. The curved surface of the cam is tangent to the top side surface of the pressing cap. The straightness of the busbar is detected by a first test structure. When the straightness does not meet the standard, a control signal is triggered, and the pressing structure presses and hammers the uneven busbar for the initial straightening movement.

[0013] Preferably, the roller pressing structure includes a second support frame. The top side of the second support frame has a second positioning hole and a screw hole. An adjusting screw is installed in the screw hole. A first rolling frame is installed at the bottom end of the adjusting screw. Second positioning rods are installed on the top two sides of the first rolling frame. The second positioning rods are vertically set in the second positioning hole. A pressing roller is rotatably installed in the first rolling frame. Two pressing rollers are installed side by side in the second support frame. After hammering and straightening, the roller pressing structure is used for roller pressing, which can better adjust the state of the busbar under the roller pressing cooperation of the two pressing rollers.

[0014] Preferably, the guide structure includes a movable rod, and the straightening plate has symmetrically arranged assembly holes on both sides. The movable rod is inserted into the assembly holes, and a first spring is fixed between one end of the movable rod and the wall of the assembly hole. A movable plate is provided on the movable rod, and a guide roller is rotatably installed on the top side of the movable plate. The guide roller is located on the top side of the straightening plate. When the busbar is pushed and corrected, with the cooperation of the guide rollers on both sides of the straightening plate, the busbar can be stably pushed along the straightening plate. Under the reset and contraction force of the first springs on both sides, the busbar can be accurately clamped, ensuring the stability of the busbar during straightening.

[0015] The advantages of this utility model are:

[0016] In the process of straightening a busbar, this utility model pushes the busbar along a straightening plate. With the cooperation of multiple guide structures, the position of the busbar is limited and corrected to ensure that the shape of the busbar is stable when it is pushed through. During the pushing process of the busbar, the straightness of the busbar is detected by the first test structure. If the straightness does not meet the standard, a control signal is triggered, and the uneven busbar is pressed and hammered by the pressing structure to perform the initial straightening movement.

[0017] After being hammered and straightened, the busbars are rolled using a roller pressing structure. This allows for better adjustment of the busbar's state through the combined action of two pressing rollers. After straightening, the busbars are tested using a second testing structure. If the test is passed, the busbars are used normally. If the test is failed, they are straightened again or manually repaired. This process allows for better control over the straightening status of the busbars, ensuring the connection quality of the solar cells. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure;

[0020] Figure 2 This is a schematic diagram of the second test structure;

[0021] Figure 3 This is a top view of the second test structure.

[0022] Figure 4 for Figure 3 Schematic diagram of the structure in sectional view along the AA section;

[0023] Figure 5 This is a schematic diagram of the downward pressing structure;

[0024] Figure 6 This is a schematic diagram of the roller pressing structure;

[0025] In the diagram: 1. Straightening plate; 2. Guide structure; 3. First test structure; 4. Pressing structure; 5. Roller pressing structure; 6. Second test structure; 21. Guide roller; 22. First spring; 23. Movable rod; 24. Movable plate; 41. First support frame; 42. Second spring; 43. Lead screw; 44. Extrusion plate; 45. Pressing motor; 46. Extrusion cap; 47. Cam; 48. First positioning rod; 49. Hollow screw; 51. Second support. 52. Support frame, 53. Adjusting screw, 54. Second positioning rod, 55. First rolling frame, 66. Pressing roller, 67. Detection roller frame, 68. Third support frame, 69. Third positioning rod, 60. Movable screw, 61. Fixed plate, 62. Movable nut, 63. First electrode ring, 64. Indicator light, 65. Detection roller, 616. Electrode plate, 617. Mounting plate, 618. Locking nut, 619. Locking screw, 610. Fourth spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figure 1-6 As shown, a busbar straightening structure for battery cell welding includes a straightening plate 1, with guide structures 2 symmetrically installed on both sides of the straightening plate 1, and a first test structure 3, a pressing structure 4, a rolling structure 5, and a second test structure 6 sequentially arranged along the X direction on the straightening plate 1.

[0028] The first test structure 3 and the second test structure 6 are the same structure. The second test structure 6 includes a third support frame 62. The top side of the third support frame 62 is provided with a movable hole and a third positioning hole. A movable screw 64 is movably disposed in the movable hole, and a third positioning rod 63 is movably disposed in the third positioning hole. A detection roller frame 61 is fixed to the bottom side of the third positioning rod 63, and the bottom end of the movable screw 64 is fixed at the middle position of the top side of the detection roller frame 61.

[0029] The first electrode ring 67, the top of the movable screw 64 is rotatably connected to a movable nut 66, and the first electrode ring 67 is fixed to the outside of the movable nut 66;

[0030] Electrode plate 610, the top side of the third support frame 62 is fixed with a fixing plate 65, the middle of the fixing plate 65 is provided with a sliding hole, a locking screw 613 is inserted in the sliding hole, one end of the locking screw 613 is installed with a mounting plate 611, the side of the mounting plate 611 is fixed with the electrode plate 610, and the other end of the locking screw 613 is rotated with a locking nut 612.

[0031] The second test structure 6 also includes a fourth spring 614, which is fitted onto the bottom of the movable screw 64. The two ends of the fourth spring 614 are respectively fixed to the top inner wall of the third support frame 62 and the top side of the test roller frame 61.

[0032] The first electrode ring 67 and the electrode plate 610 are in close contact. An indicator light 68 is installed on the top side of the third support frame 62. The first electrode ring 67, the electrode plate 610, the indicator light 68 and the power supply are connected in series. During operation, the busbar is a metal wire used to connect the electrodes of the battery cell to collect current. In the solar panel, each battery cell has two electrodes, a positive electrode and a negative electrode. The busbar is welded to these electrodes to form a complete current loop. During the straightening process of the busbar, the busbar is pushed along the straightening plate 1. With the cooperation of multiple guide structures 2, the position of the busbar is limited and corrected to ensure that the shape of the busbar is stable when it is pushed through.

[0033] During the busbar advancement process, the straightness of the busbar is detected by the first test structure 3. If the straightness does not meet the standard, a control signal will be triggered, and the uneven busbar will be pressed and hammered by the pressing structure 4 to perform the initial straightening movement.

[0034] After being hammered and straightened, the busbar is rolled using the roller pressing structure 5, which allows for better adjustment of the busbar's state with the combined action of two pressing rollers 55. After straightening, the busbar is tested using the second testing structure 6. If it passes the test, it can be used normally; if it fails the test, it can be straightened again or repaired manually.

[0035] When the test is performed by the first test structure 3 and the second test structure 6, when the return channel passes through, the test roller 69 presses on the busbar to squeeze the fourth spring 614. When the busbar is in a qualified straight state, the first electrode ring 67 on the movable nut 66 is in contact with the electrode plate 610 on the mounting plate 611, and the indicator light 68 is in a powered-on flashing state.

[0036] When the busbar is in a defective state, the first electrode ring 67 and the electrode plate 610 that were originally aligned with it become misaligned, causing the indicator light 68 to lose power. The control circuit receives the power-off signal from the indicator light 68 and drives the pressing structure 4 at the front end to perform hammering repair. At the rear end, the defective busbar can be distinguished.

[0037] The pressing structure 4 includes a first support frame 41, which is fixed to the straightening plate 1. A first positioning hole and a rod hole are respectively opened on the top side of the first support frame 41. A first positioning rod 48 is movably inserted into the first positioning hole, and a hollow screw 49 is movably inserted into the rod hole. A pressing plate 44 is fixed to the bottom end of the first positioning rod 48. A lead screw 43 is rotatably installed on the top side of the middle of the pressing plate 44. The top end of the lead screw 43 rotates inside the bottom end of the hollow screw 49. A pressing cap 46 is fixed to the top end of the hollow screw 49. A second spring 42 is provided between the pressing cap 46 and the top side wall of the first support frame 41. A pressure motor 45 is installed, and a cam 47 is mounted on the output shaft of the pressure motor 45. The curved surface of the cam 47 is tangent to the top side of the extrusion cap 46. During operation, when the busbar fails the test by the first test structure 3, the control circuit drives the pressure motor 45 to rotate the cam 47, which presses the extrusion cap 46. With the help of the rebound force of the second spring 42, the extrusion cap 46 can move up and down. During the up and down movement of the extrusion cap 46, the extrusion plate 44 moves up and down with the help of the hollow screw 49 and the lead screw 43, which can be used to hammer and straighten the busbar to better restore the shape of the busbar.

[0038] The roller pressing structure 5 includes a second support frame 51. The top side of the second support frame 51 is provided with a second positioning hole and a screw hole. An adjusting screw 52 is installed in the screw hole. A first rolling frame 54 is installed at the bottom end of the adjusting screw 52. A second positioning rod 53 is installed on both sides of the top of the first rolling frame 54. The second positioning rod 53 is vertically set in the second positioning hole. A pressing roller 55 is rotatably installed in the first rolling frame 54. Two pressing rollers 55 are installed side by side in the second support frame 51. When the busbar is roller pressed and straightened, the adjusting screw 52 is rotated according to the thickness of the busbar to adjust the distance between the pressing roller 55 and the straightening plate 1. When the busbar passes through, it is roller pressed twice by the two pressing rollers 55, which can straighten the busbar.

[0039] The guide structure 2 includes a movable rod 23. Assembly holes are symmetrically arranged on both sides of the straightening plate 1, and the movable rod 23 is inserted into the assembly holes. A first spring 22 is fixed between one end of the movable rod 23 and the wall of the assembly hole. A movable plate 24 is provided on the movable rod 23, and a guide roller 21 is rotatably mounted on the top side of the movable plate 24. The guide roller 21 is located on the top side of the straightening plate 1. During the busbar pushing and straightening process, with the cooperation of the guide rollers 21 on both sides of the straightening plate 1, the busbar can be stably pushed along the straightening plate 1. Under the reset and contraction force of the first springs 22 on both sides, the busbar can be accurately clamped, ensuring the stability of the busbar during straightening.

[0040] Working principle: A busbar is a metal wire used to connect the electrodes of a solar cell to collect current. In a solar panel, each cell has two electrodes, a positive electrode and a negative electrode. The busbar is welded to these electrodes to form a complete current loop. During the straightening process of the busbar, the busbar is pushed along the straightening plate 1. With the cooperation of multiple guide structures 2, the position of the busbar is limited and corrected to ensure that the shape of the busbar is stable when it is pushed through.

[0041] During the busbar advancement process, the straightness of the busbar is detected by the first test structure 3. If the straightness does not meet the standard, a control signal will be triggered, and the uneven busbar will be pressed and hammered by the pressing structure 4 to perform the initial straightening movement.

[0042] After being hammered and straightened, the busbar is rolled using the roller pressing structure 5, which allows for better adjustment of the busbar's state with the combined action of two pressing rollers 55. After straightening, the busbar is tested using the second testing structure 6. If it passes the test, it can be used normally; if it fails the test, it can be straightened again or repaired manually.

[0043] When the test is performed by the first test structure 3 and the second test structure 6, when the return channel passes through, the test roller 69 presses on the busbar to squeeze the fourth spring 614. When the busbar is in a qualified straight state, the first electrode ring 67 on the movable nut 66 is in contact with the electrode plate 610 on the mounting plate 611, and the indicator light 68 is in a powered-on flashing state.

[0044] When the busbar is in a defective state, the first electrode ring 67 and the electrode plate 610 that were originally aligned will be misaligned, causing the indicator light 68 to be de-energized. The control circuit receives the de-energization signal from the indicator light 68 and drives the pressing structure 4 at the front end to perform hammering repair. At the rear end, defective busbars can be distinguished, and the straightening status of the busbars can be better controlled to ensure the connection quality of the battery cells.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A busbar straightening structure for battery cell welding, characterized in that: include: A straightening plate (1) is provided with guide structures (2) symmetrically installed on both sides of the straightening plate (1). A first test structure (3), a pressing structure (4), a rolling structure (5), and a second test structure (6) are arranged sequentially along the X direction on the straightening plate (1). The first test structure (3) and the second test structure (6) are the same structure. The second test structure (6) includes a third support frame (62). The top side of the third support frame (62) is provided with a movable hole and a third positioning hole. A movable screw (64) is movably arranged in the movable hole. A third positioning rod (63) is movably arranged in the third positioning hole. A detection roller frame (61) is fixed on the bottom side of the third positioning rod (63). The bottom end of the movable screw (64) is fixed at the middle position on the top side of the detection roller frame (61). The first electrode ring (67) is located on the top of the movable screw (64), and the movable nut (66) is rotated on the outside of the movable nut (66). The electrode plate (610) has a fixing plate (65) fixed on the top side of the third support frame (62). The fixing plate (65) has a sliding hole in the middle, and a locking screw (613) is inserted in the sliding hole. One end of the locking screw (613) is equipped with an mounting plate (611), and the electrode plate (610) is fixed on the side of the mounting plate (611). The other end of the locking screw (613) is rotated with a locking nut (612).

2. The busbar straightening structure for battery cell welding according to claim 1, characterized in that: The second test structure (6) also includes a fourth spring (614), which is fitted on the bottom of the movable screw (64). The two ends of the fourth spring (614) are respectively fixed to the top inner wall of the third support frame (62) and the top side of the test roller frame (61).

3. The busbar straightening structure for battery cell welding according to claim 1, characterized in that: The first electrode ring (67) and the electrode plate (610) are in close contact. An indicator light (68) is installed on the top side of the third support frame (62). The first electrode ring (67), the electrode plate (610), the indicator light (68) and the power supply are connected in series.

4. A busbar straightening structure for battery cell welding according to claim 1, characterized in that: The pressing structure (4) includes a first support frame (41), which is fixed on the straightening plate (1). A first positioning hole and a rod hole are respectively opened on the top side of the first support frame (41). A first positioning rod (48) is movably inserted into the first positioning hole, and a hollow screw (49) is movably inserted into the rod hole. A pressing plate (44) is fixed to the bottom end of the first positioning rod (48). A lead screw (43) is rotatably installed on the top middle side of the pressing plate (44). The top end of the rod (43) rotates inside the bottom end of the hollow screw (49). A compression cap (46) is fixed to the top end of the hollow screw (49). A second spring (42) is provided between the compression cap (46) and the top side wall of the first support frame (41). A pressing motor (45) is installed on the top side of the first support frame (41). A cam (47) is installed on the output shaft of the pressing motor (45). The curved surface of the cam (47) is tangent to the top side surface of the compression cap (46).

5. A busbar straightening structure for battery cell welding according to claim 1, characterized in that: The roller pressing structure (5) includes a second support frame (51). The top side of the second support frame (51) is provided with a second positioning hole and a screw hole. An adjusting screw (52) is installed in the screw hole. A first rolling frame (54) is installed at the bottom end of the adjusting screw (52). A second positioning rod (53) is installed on both sides of the top of the first rolling frame (54). The second positioning rod (53) is vertically set in the second positioning hole. A pressing roller (55) is rotatably installed in the first rolling frame (54).

6. A busbar straightening structure for battery cell welding according to claim 5, characterized in that: Two pressing rollers (55) are installed side by side inside the second support frame (51).

7. A busbar straightening structure for battery cell welding according to claim 1, characterized in that: The guide structure (2) includes a movable rod (23). The straightening plate (1) has symmetrically arranged assembly holes on both sides. The movable rod (23) is inserted into the assembly holes. A first spring (22) is fixed between one end of the movable rod (23) and the wall of the assembly hole. A movable plate (24) is provided on the movable rod (23). A guide roller (21) is rotatably installed on the top side of the movable plate (24). The guide roller (21) is located on the top side of the straightening plate (1).

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