An electrode assembly for a lithium secondary battery

Abstract

The application relates to the technical field of battery cell welding, and particularly discloses a battery cell welding auxiliary device which comprises a workbench, a support frame and a welding head, the support frame is connected to the workbench, the welding head is connected to the support frame, the support frame is used for fixing the welding head, the welding head is used for spot welding connection of battery cells, a detection assembly is connected to the workbench and corresponds to the welding head, the detection assembly is used for placing the battery cells and monitoring the positive and negative poles of the battery cells, before welding, the battery cells are inserted into the detection assembly, the detection assembly can judge the positive and negative poles of the battery cells according to the contact areas of the battery cells because the areas of the positive and negative pole contact points of the battery cells are different, a moving assembly is connected to the workbench and connected to the detection assembly, the moving assembly is used for moving the positions of the battery cells, the battery cells are conveniently welded, the positions of the battery cells can be adjusted during the welding process, and then the welding head can be aligned with the positions of the battery cells.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of welding of an electric core, in particular to an auxiliary device for welding of an electric core. BACKGROUND

[0002] Welding of an electric core is a key process in modern electronic product manufacturing, and is crucial for the normal work of a battery assembly. The welding of an electric core is mainly used for connecting electric cores in a battery assembly, ensuring smooth conduction of current and stability of the battery assembly, firmly connecting the polar materials between the electric cores, so as to realize the conduction of current and the normal work of the battery assembly. The welding of an electric core usually uses a spot welding method.

[0003] A spot welding machine is a device for connecting metals by using the principle of resistance heating. It connects workpieces together by applying a certain current to the metal workpieces and using a certain pressure to make the contact point produce high temperature in a short time. When welding an electric core, the positive and negative poles of the electric core need to be connected. The number of welding is large and the welding position is more. The position of the electric core needs to be adjusted by the staff. However, the staff may place the positive and negative poles of the electric core incorrectly for a long time, resulting in short circuit of the electric core due to incorrect welding of the electric core. Therefore, we propose an auxiliary device for welding of an electric core. SUMMARY

[0004] The purpose of the present application is to provide an auxiliary device for welding of an electric core to solve the problem that the staff may place the positive and negative poles of the electric core incorrectly for a long time, resulting in short circuit of the electric core due to incorrect welding of the electric core.

[0005] To achieve the above purpose, the present application provides the following technical scheme: an auxiliary device for welding of an electric core, comprising: a workbench, a support frame and a welding head, the support frame is connected to the workbench, the welding head is connected to the support frame, the support frame is used for fixing the welding head, and the welding head is used for spot welding connection of the electric core;

[0006] Further comprising:

[0007] A detection assembly is connected to the workbench, and the detection assembly corresponds to the welding head. The detection assembly is used for placing the electric core, and the detection assembly is used for monitoring the positive and negative poles of the electric core.

[0008] A moving assembly is connected to the workbench, and the moving assembly is connected to the detection assembly. The moving assembly is used for moving the position of the electric core, and facilitates the welding of the electric core.

[0009] A testing assembly is connected to the workbench, and the testing assembly is connected to the detection assembly. The testing assembly is used for testing whether the electric core has a virtual welding condition.

[0010] The testing component includes a placement platform, which is located on a workbench. The placement platform has several storage slots for placing battery cells, and each storage slot contains a testing component.

[0011] The testing component includes a placement slot, which is located on a placement platform. The placement platform has a through hole that is connected to the placement slot. Detector 1 and Detector 2 are installed inside the placement slot.

[0012] Among them, detector one is connected to connecting plate one, detector two is connected to connecting plate two, and a fixed plate is connected in the placement slot. Connecting plate one and fixed plate are slidably connected, and detector two is slidably connected to detector one.

[0013] Among them, a positive electromagnet is connected to the first connecting plate, and a negative electromagnet is connected to the second connecting plate.

[0014] The movable component includes a movable plate connected to a placement platform. The movable plate has a movable groove, a movable component connected to the movable groove, and a sliding groove.

[0015] The first movable component includes a motor, which is connected to the first movable groove. The output shaft of the motor is connected to a drive gear. A movable rod is connected to the placement platform, and the drive gear is engaged with the movable rod. The movable rod is slidably connected to the first sliding groove. The bottom end of the movable plate is connected to the second movable component.

[0016] The movable component two includes a movable groove two, which is opened on the worktable. A drive groove is opened on the worktable, and a motor two is connected in the drive groove. The motor two is connected in the drive groove. Two lead screws are connected to the inner wall of the movable groove two. One of the lead screws is connected to the output shaft of the motor two. A drive component is connected to the two lead screws, and a movable block is connected to the lead screw.

[0017] The driving component includes a gear 1 connected to the output shaft of a motor 2, and the gear 1 is connected to one of the lead screws. The other lead screw is connected to a gear 2, and a chain is connected to the gear 1 and the gear 2. A slide groove 2 is provided on the worktable, and the slide groove 2 is slidably connected to the moving block.

[0018] The test component includes a rectangular groove, which is opened inside the placement groove. An electric telescopic rod is connected inside the rectangular groove and is connected to a fixed plate. The bottom of the placement groove is connected to a test groove.

[0019] The present invention has at least the following beneficial effects: By setting up a detection component, a moving component, and a testing component, the detection component is connected to the worktable and corresponds to the welding head. The detection component is used to place the battery cell and monitor the positive and negative terminals of the battery cell. Before welding, the battery cell is inserted into the detection component. Since the contact areas of the positive and negative terminals of the battery cell are different, the detection component can determine the positive and negative terminals of the battery cell based on the contact area. The moving component is connected to the worktable and is connected to the detection component. The moving component is used to move the position of the battery cell to facilitate battery cell welding. During the battery cell welding process, the position of the battery cell can be adjusted so that the welding head can be aligned with the position of the battery cell for automatic welding. The testing component is connected to the worktable and is connected to the detection component. The testing component is used to test whether there is a cold solder joint in the battery cell. After the battery cell welding is completed, the testing component can be set to move the battery cell vertically to test whether there is a cold solder joint in the welded battery cell, thus ensuring the welding quality of the battery cell. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the placement platform structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the placement groove structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the detection component structure of the present invention;

[0024] Figure 5 for Figure 4 Enlarged view of region A in the middle;

[0025] Figure 6 This is a schematic diagram of the detection element structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the mobile component of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of a moving component of the present invention;

[0028] Figure 9 for Figure 8 Enlarged view of region B in the middle;

[0029] Figure 10 This is a schematic diagram of the second moving part of the present invention;

[0030] Figure 11 for Figure 10 Enlarged diagram of region C in the middle;

[0031] Figure 12 This is a schematic diagram of the driving component structure of the present invention.

[0032] In the diagram: 1. Workbench; 2. Support frame; 3. Welding head; 4. Detection assembly; 41. Placement platform; 5. Moving plate; 6. Storage slot; 7. Detection piece; 71. Placement slot; 8. Fixing plate; 91. Detector one; 92. Detector two; 10. Switch; 11. Through hole; 12. Connecting plate one; 13. Connecting plate two; 14. Negative electromagnet; 15. Positive electromagnet; 16. Moving assembly; 17. Slide one; 18. Moving part one; 181. Moving slot one; 19. Motor one; 20. Moving rod; 21. Moving slot two; 22. Drive gear; 23. Chain; 24. Moving part two; 25. Drive slot; 26. Drive component; 27. Slide two; 28. Moving block; 29. ​​Lead screw; 30. Gear one; 31. Gear two; 32. Rectangular slot; 33. Electric telescopic rod; 34. Test slot. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Please see Figures 1 to 12 The present invention provides a technical solution: a battery cell welding auxiliary device, comprising: a workbench 1, a support frame 2 and a welding head 3, wherein the support frame 2 is connected to the workbench 1, the welding head 3 is connected to the support frame 2, the support frame 2 is used to fix the welding head 3, and the welding head 3 is used to spot weld the battery cells.

[0036] Also includes:

[0037] The detection component 4 is connected to the workbench 1 and corresponds to the welding head 3. The detection component 4 is used to place the battery cell and to monitor the positive and negative poles of the battery cell. Before welding, the battery cell is inserted into the detection component 4. Since the contact area of ​​the positive and negative poles of the battery cell is different, the detection component 4 can determine the positive and negative poles of the battery cell based on the contact area of ​​the battery cell.

[0038] The moving component 16 is connected to the worktable 1 and is connected to the detection component 4. The moving component 16 is used to move the position of the battery cell to facilitate battery cell welding. During the battery cell welding process, the position of the battery cell can be adjusted so that the welding head 3 can be aligned with the position of the battery cell and automatically weld the battery cell.

[0039] The test component is connected to the workbench 1 and is connected to the detection component 4. The test component is used to test whether there is a cold solder joint in the battery cell. After the battery cell is soldered, the test component can be set to move the battery cell vertically to test whether there is a cold solder joint in the soldered battery cell, thus ensuring the quality of battery cell soldering.

[0040] The testing component 4 includes a placement platform 41, which is located on the workbench 1. The placement platform 41 has several storage slots 6 for placing battery cells. Each storage slot 6 is equipped with a testing component 7. By setting the storage slots 6, the battery cells can be limited and fixed, thereby ensuring the welding of the battery cells. By setting the testing components 7, the positive and negative poles of the battery cells can be tested.

[0041] The detection component 7 includes a placement slot 71, which is located on a placement platform 41. The placement platform 41 has a through hole 11 connected to the placement slot 71. Detector 1 91 and Detector 2 92 are installed in the placement slot 71. The placement slot 71 protects Detector 1 91 and Detector 2 92, thereby extending their service life. When the battery cell is inserted into the storage slot 6, the positive terminal of the battery cell presses against Detector 2 92. When the battery cell is negative, the downward pressing of the battery cell simultaneously moves Detector 1 91 and Detector 2 92. The positive and negative terminals of the battery cell can be detected by the movement of Detector 1 91 and Detector 2 92.

[0042] A connecting plate 12 is connected to detector 1 91, and a connecting plate 2 13 is connected to detector 2 92. A fixing plate 8 is connected inside the placement slot 71. Connecting plate 1 12 is slidably connected to fixing plate 8, and detector 2 92 is slidably connected to detector 1 91. When the positive electrode of the battery cell is inserted into the storage slot 6, detector 2 92 drives connecting plate 2 13 to move downward. When the negative electrode of the battery cell is inserted into the storage slot 6, detector 1 91 and detector 2 92 drive connecting plate 1 12 and connecting plate 2 13 to move downward simultaneously. Connecting plate 1 12 and connecting plate 2 13 can be fixed by setting fixing plate 8.

[0043] A positive electromagnet 15 is connected to the connecting plate 12, and a negative electromagnet 14 is connected to the connecting plate 13. Two adjacent battery cells should have one positive and one negative electrode. When two battery cells with one positive and one negative electrode are inserted into the placement slot 71, a current is generated between the positive electromagnet 15 and the negative electromagnet 14. When two battery cells with the same polarity are inserted into the placement slot 71, the electromagnets repel each other. This can detect whether the battery cell insertion surface is correct, thereby preventing errors in battery cell soldering.

[0044] The movable assembly 16 includes a movable plate 5, which is connected to the placement platform 41. The movable plate 5 has a movable groove 181, and a movable component 18 is connected in the movable groove 181. The movable plate 5 also has a sliding groove 17. By setting the movable groove 181, the movable component 18 can be protected, thereby extending the service life of the movable component 18. The movable plate 5 can move along the X-axis in the sliding groove 17, which facilitates the welding of the battery cell.

[0045] The moving part 18 includes a motor 19, which is connected in a moving groove 181. The moving groove 181 protects the motor 19 and extends its service life. A drive gear 22 is connected to the output shaft of the motor 19. A moving rod 20 is connected to the placement platform 41, and the drive gear 22 engages with the moving rod 20. The moving rod 20 is slidably connected to the slide groove 17. The bottom of the moving plate 5 is connected to a moving part 24. When the welding pedal is stopped, the motor 19 is started. The motor 19 drives the drive gear 22 to rotate one revolution. The rotation of the drive gear 22 can drive the moving rod 20 to move along the X-axis, thereby causing the placement platform 41 to move along the X-axis in the slide groove 17, which in turn moves the battery cell, thus facilitating the welding of the battery cell.

[0046] The second movable component 24 includes a second movable slot 21, which is located on the worktable 1. The worktable 1 has a drive slot 25, and a second motor is connected inside the drive slot 25. Two lead screws 29 are connected to the inner wall of the second movable slot 21. One of the lead screws 29 is connected to the output shaft of the second motor. A drive component 26 is connected to both lead screws 29, and a movable block 28 is connected to each lead screw 29. The worktable 1 can be used to place the movable plate 5. When the movable rod 20 triggers the switch 10, the first motor 19 is turned off, and the second motor is started. The second motor drives the drive component 26 to rotate, which in turn drives the two lead screws 29 to rotate synchronously. The rotation of the two lead screws 29 can drive the movable block 28 to move along the Z-axis, which in turn drives the placement table 41 to move along the Z-axis, and thus the position of the battery cell moves along the Z-axis, which facilitates the welding of multiple battery cells. The movable slot can fix the lead screws 29, thereby extending the service life of the lead screws 29.

[0047] The driving component 26 includes a gear 30 connected to the output shaft of the motor 2, and the gear 30 is connected to one of the lead screws 29. The other lead screw 29 is connected to a gear 31, and a chain 23 is connected to the gear 30 and the gear 31. The worktable 1 has a slide groove 27, which is slidably connected to the moving block 28. The motor 2 drives the gear 30 to rotate, and the rotation of the gear 30 drives the chain 23 to rotate, which in turn drives the gear 31 to rotate, thereby causing the lead screws 29 and 29 to rotate simultaneously, so that the moving block 28 slides in the slide groove 27.

[0048] Example 2

[0049] The testing assembly includes a rectangular slot 32, which is located within a placement slot 71. An electric telescopic rod 33 is connected to the rectangular slot 32 and is also connected to a fixed plate 8. A test slot 34 is connected to the bottom of the placement slot 71. When a current is generated between the positive electromagnet 15 and the negative electromagnet 14, the electric telescopic rod 33 is activated. The electric telescopic rod 33 moves the fixed plate 8 downward. When the fixed plate 8 moves to a certain position, it can move the connecting plate 12 and the connecting plate 2 13 vertically, thereby allowing the detector 1 91 and the detector 2 92 to be inserted into the test slot 34. The test slot 34 is used to test whether there is current in the detector 1 91 and the detector 2 92. When there is current, the welding is complete. If no current is generated in one of the cells, there may be a cold weld. If no current is generated, the electric telescopic rod 33 is activated, and the electric telescopic rod 33 moves the cell back to its original position.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery cell welding auxiliary device, comprising: The workbench (1), support frame (2) and welding head (3) are provided. The support frame (2) is connected to the workbench (1), and the welding head (3) is connected to the support frame (2). The support frame (2) is used to fix the welding head (3), and the welding head (3) is used to spot weld the battery cells. Its characteristic is that it also includes: The detection component (4) is connected to the workbench (1) and corresponds to the welding head (3). The detection component (4) is used to place the battery cell and to monitor the positive and negative poles of the battery cell. The moving component (16) is connected to the workbench (1) and is connected to the detection component (4). The moving component (16) is used to move the position of the battery cell to facilitate battery cell welding. The test component is connected to the workbench (1) and is connected to the detection component (4). The test component is used to test whether there is a cold solder joint in the battery cell. The detection component (4) includes a placement platform (41), which is located on the workbench (1). The placement platform (41) has several storage slots (6) for placing battery cells, and each of the several storage slots (6) is equipped with a detection component (7). The detection component (7) includes a placement slot (71), which is opened on a placement platform (41). A through hole (11) is opened on the placement platform (41), and the through hole (11) is connected to the placement slot (71). Detector 1 (91) and detector 2 (92) are provided in the placement slot (71). When the battery cell is inserted into the storage slot (6), the positive electrode of the battery cell will press the detector 2 (92). When the battery cell is the negative electrode, the downward pressing of the battery cell will simultaneously drive detector 1 (91) and detector 2 (92) to move. Thus, the positive and negative electrodes of the battery cell can be detected by the moving position of detector 1 (91) and detector 2 (92). The detector one (91) is connected to the connecting plate one (12), the detector two (92) is connected to the connecting plate two (13), the placement slot (71) is connected to the fixing plate (8), the connecting plate one (12) is slidably connected to the fixing plate (8), and the detector two (92) is slidably connected to the detector one (91). A positive electromagnet (15) is connected to the first connecting plate (12), and a negative electromagnet (14) is connected to the second connecting plate (13).

2. The cell welding auxiliary device according to claim 1, characterized in that: The moving component (16) includes a moving plate (5), which is connected to the workbench (1). The moving plate (5) has a moving groove (181) and a moving part (18) is connected in the moving groove (181). The moving plate (5) has a sliding groove (17).

3. The cell welding auxiliary device according to claim 2, characterized in that: The first moving part (18) includes a first motor (19), which is connected in the first moving groove (181). A drive gear (22) is connected to the output shaft of the first motor (19). A moving rod (20) is connected to the placement platform (41), and the drive gear (22) is engaged with the moving rod (20). The moving rod (20) is slidably connected to the first sliding groove (17). The bottom end of the moving plate (5) is connected to the second moving part (24).

4. The cell welding auxiliary device according to claim 3, characterized in that: The second movable component (24) includes a second movable slot (21), which is located on a workbench (1). A drive slot (25) is located on the workbench (1). A second motor is connected to the drive slot (25). The second motor is connected to the drive slot (25). Two lead screws (29) are connected to the inner wall of the second movable slot (21). One of the lead screws (29) is connected to the output shaft of the second motor. A drive component (26) is connected to both lead screws (29). A movable block (28) is connected to the lead screws (29).

5. The cell welding auxiliary device according to claim 4, characterized in that: The drive unit (26) includes a gear one (30), which is connected to the output shaft of the motor two, and the gear one (30) is connected to one of the lead screws (29). The other lead screw (29) is connected to a gear two (31), and a chain (23) is connected to the gear one (30) and the gear two (31). The worktable (1) is provided with a sliding groove two (27), and the sliding groove two (27) is slidably connected to the moving block (28).

6. The cell welding auxiliary device according to claim 1, characterized in that: The test component includes a rectangular groove (32) which is opened in the placement groove (71). An electric telescopic rod (33) is connected in the rectangular groove (32) and the electric telescopic rod (33) is connected to the fixing plate (8). A test groove (34) is connected to the bottom of the placement groove (71).

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