Battery welding equipment

Abstract

The utility model relates to battery welding equipment. The battery welding equipment comprises a battery cell conveying device, a battery cell moving and taking device, a tab shaping device, a battery cell bearing table, a welding table, a protection plate bearing frame, a protection plate moving and taking device and a welding device. The battery cell transferring device is used for transferring the battery cell from the battery cell conveying device to the tab shaping device and transferring the battery cell from the tab shaping device to the battery cell bearing table; the welding table is located on one side of the battery cell bearing table, and the welding table is used for bearing a tab of the battery cell; the protection plate transferring device is used for transferring a protection plate from the protection plate bearing frame to the welding table, and the welding device is used for welding a nickel sheet on the protection plate with a tab of the battery cell. According to the scheme, the welding efficiency and the yield can be improved, and manpower is saved.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and particularly to a battery welding device. Background Art

[0002] With the rapid development of electronic technology and new energy vehicles, the lithium battery technology applied in electronic products and new energy vehicles has been improved, increasing the demand for lithium batteries. A lithium-ion battery pack includes battery cells and a protection board (PCM). The welding process between the protection board and the battery cells is an important process in the assembly of lithium-ion batteries.

[0003] In related technologies, the welding between the battery cells and the protection board still adopts the manual welding method. Before welding, the battery cells are manually placed into the fixture, then the protection board is manually placed, and then welding is carried out. This method has low welding efficiency and a large workload for operators. Utility Model Content

[0004] To solve or partially solve the problems existing in related technologies, this application provides a battery welding device, which can improve welding efficiency and save manpower.

[0005] This application provides a battery welding device, including: a battery cell conveying device, a battery cell transferring device, an ear shaping device, a battery cell bearing platform, a welding platform, a protection board bearing rack, a protection board transferring device, and a welding device;

[0006] The battery cell transferring device is used to transfer the battery cells from the battery cell conveying device to the ear shaping device, and to transfer the battery cells from the ear shaping device to the battery cell bearing platform;

[0007] The welding platform is located on one side of the battery cell bearing platform, and the welding platform is used to bear the ears of the battery cells;

[0008] The protection board transferring device is used to transfer the protection board from the protection board bearing rack to the welding platform, and the welding device is used to weld the nickel sheets on the protection board to the ears of the battery cells.

[0009] Further, the battery cell transferring device includes a manipulator and a suction cup provided on the manipulator, and the suction cup is used to adsorb the battery cells.

[0010] Further, the ear shaping device includes a battery cell limiting member and a flattening fixture for flattening the ears of the battery cells;

[0011] The flattening fixture includes two relatively arranged pressing arms and a driving member for driving the two pressing arms to open and close, and the two pressing arms can clamp the ears of the battery cells located on the battery cell limiting member.

[0012] Further, the battery cell limiting member includes a limiting platform for carrying the battery cell.

[0013] Further, the battery cell carrying platform includes a turntable and a plurality of carrying positions provided on the outer periphery of the turntable, and the plurality of carrying positions are arranged at intervals along the circumferential direction of the turntable;

[0014] The turntable can rotate to move the carrying position to a welding station opposite to the welding table.

[0015] Further, the welding table has a supporting surface for supporting the electrode tabs of the battery cell, and the welding table can move up and down relative to the battery cell carrying platform.

[0016] Further, an insulating member is provided on the welding table, and the insulating member can slide up and down relative to the welding table, and the insulating member can extend upward from the supporting surface to separate two nickel sheets on the protection plate for welding with the positive electrode tab and the negative electrode tab.

[0017] Further, a plurality of limiting grooves for placing the protection plate are provided on the protection plate carrier.

[0018] Further, the protection plate picking and placing device includes an X-axis driving device, a Y-axis driving device, a Z-axis driving device and a protection plate gripper which are connected in sequence.

[0019] Further, the welding device is located above the welding table, and the battery welding equipment further includes a lifting driving device for driving the welding device to lift and lower.

[0020] The technical solution provided by the present application may include the following beneficial effects: The battery cell picking and placing device transfers the battery cell from the battery cell conveying device to the electrode tab shaping device. After the flattening fixture of the electrode tab shaping device shapes the electrode tabs of the battery cell, the battery cell picking and placing device transfers the battery cell from the electrode tab shaping device to the battery cell carrying platform. The electrode tabs of the battery cell are placed on the welding table. The protection plate picking and placing device is used to transfer the protection plate from the protection plate carrier to the welding table, so that the nickel sheets of the protection plate are fitted with the electrode tabs of the battery cell. The welding device welds the nickel sheets on the protection plate and the electrode tabs of the battery cell together; the above-mentioned battery welding equipment can automatically complete the operations of picking and placing the battery cell and the protection plate and welding, without manual operation, saving manpower, having a high degree of automation, and can improve the welding efficiency.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Description of the Drawings

[0022] The above and other objects, features, and advantages of the present application will become more apparent by describing the exemplary embodiments of the present application in more detail in conjunction with the accompanying drawings, wherein in the exemplary embodiments of the present application, the same reference numerals generally represent the same components.

[0023] Figure 1 is a schematic structural diagram of a battery welding device shown in an embodiment of the present application;

[0024] Figure 2 is a schematic structural diagram of a battery cell picking device shown in an embodiment of the present application;

[0025] Figure 3 is a schematic structural diagram of an ear shaping device shown in an embodiment of the present application;

[0026] Figure 4 is a schematic structural diagram of a battery cell carrier, a welding table, and a welding device shown in an embodiment of the present application;

[0027] Figure 5 is a schematic structural diagram of a welding table shown in an embodiment of the present application;

[0028] Figure 6 is a schematic structural diagram of a protection board carrier shown in an embodiment of the present application;

[0029] Figure 7 is a schematic structural diagram of a protection board picking device shown in an embodiment of the present application.

[0030] Reference numerals:

[0031] 1 - battery cell conveying device, 2 - battery cell picking device, 21 - manipulator, 22 - suction cup, 3 - ear shaping device, 31 - flattening fixture, 311 - pressing arm, 312 - driving member, 32 - battery cell limiting member, 321 - limiting table, 4 - battery cell carrier, 41 - turntable, 42 - carrying position, 5 - welding table, 51 - supporting surface, 52 - insulating member, 6 - protection board carrier, 61 - limiting groove, 7 - protection board picking device, 71 - X-axis driving device, 72 - Y-axis driving device, 73 - Z-axis driving device, 74 - protection board gripper, 8 - welding device, 9 - battery cell, 10 - protection board. Detailed embodiments

[0032] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0034] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0035] Unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the connection inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the related art, the welding between the battery cell and the protection board still adopts the manual welding method. Before welding, the battery cell is manually placed into the fixture, then the protection board is manually placed, and then welding is carried out. The welding efficiency of this method is low and the workload of the operator is large.

[0037] In view of the above problems, the embodiments of this application provide a battery welding device, which can improve the welding efficiency and save manpower.

[0038] The technical solutions of the embodiments of this application are described in detail below with reference to the drawings.

[0039] As Figures 1 to 7 shown, the embodiments of this application provide a battery welding device, including a battery cell conveying device 1, a battery cell picking device 2, an ear shaping device 3, a battery cell bearing table 4, a welding table 5, a protection board bearing frame 6, a protection board picking device 7 and a welding device 8.

[0040] The battery cell conveying device 1 can be a conveyor belt, and the battery cell 9 is conveyed on the surface of the conveyor belt to the working area of the battery cell picking device 2.

[0041] The battery cell picking device 2 is used to transfer the battery cell 9 from the battery cell conveying device 1 to the ear shaping device 3, and to transfer the battery cell 9 from the ear shaping device 3 to the battery cell carrier 4. Before the battery cell 9 is placed, the overall battery cell 9 can be corrected and aligned through CCD vision. Before the ears of the battery cell 9 are welded, the size, center distance, and ear edge distance of the ears can be confirmed through CCD vision and the ears can be corrected; The welding table 5 is located on one side of the battery cell carrier 4. The welding table 5 is used to carry the ears of the battery cell 9, and the battery cell picking device 2 can limit the position of the battery cell 9.

[0042] The protection board picking device 7 is used to transfer the protection board 10 from the protection board carrier 6 to the welding table 5, and the welding device 8 is used to weld the nickel sheet on the protection board 10 to the ears of the battery cell 9. Multiple protection boards 10 can be pre-placed on the protection board carrier 6. During welding, the battery cell 9 is located on the battery cell carrier 4, the ears of the battery cell 9 are located on the welding table 5, the nickel sheet on the protection board 10 is fitted to the ears of the battery cell 9, and the welding device 8 welds the nickel sheet and the ears. The welding device 8 uses laser welding for welding.

[0043] The battery cell 9 is transferred from the battery cell conveying device 1 to the ear shaping device 3 through the battery cell picking device 2. After the flattening fixture 31 of the ear shaping device 3 shapes the ears of the battery cell 9, the battery cell picking device 2 transfers the battery cell 9 from the ear shaping device 3 to the battery cell carrier 4. The ears of the battery cell 9 are placed on the welding table 5. The protection board picking device 7 is used to transfer the protection board 10 from the protection board carrier 6 to the welding table 5, so that the nickel sheet of the protection board 10 is fitted to the ears of the battery cell 9, and the welding device 8 welds the nickel sheet on the protection board 10 to the ears of the battery cell 9 together; The above battery welding equipment can automatically complete the operations of picking up, placing, and welding the battery cell 9 and the protection board 10, without manual operation, saving manpower, having a high degree of automation, improving the welding efficiency and accuracy, and increasing the yield rate of products.

[0044] In some embodiments, such as Figure 2 shown, the battery cell picking device 2 includes a manipulator 21 and a suction cup 22 provided on the manipulator 21. The suction cup 22 is used to adsorb the battery cell 9. The manipulator 21 is used to drive the suction cup 22 to move. The suction cup 22 uses vacuum adsorption to pick up the battery cell 9, so as to prevent damage to the battery cell 9 during the process of moving the battery cell 9.

[0045] In some embodiments, such as Figure 3As shown, the tab shaping device 3 includes a battery cell positioning member 32 and a flattening fixture 31 for flattening the tabs of the battery cell 9; the flattening fixture 31 includes two opposing pressing arms 311 and a driving member 312 for driving the two pressing arms 311 to open and close, and the two pressing arms 311 can clamp the tabs of the battery cell 9 located on the battery cell positioning member 32.

[0046] Specifically, the battery cell positioning member 32 is used to position the battery cell 9 to prevent the battery cell 9 from moving during tab shaping. The two pressing arms 311 are oppositely arranged on the upper and lower sides of the tab. The driving member 312 drives the two pressing arms 311 to move up and down to open and close. When the two pressing arms 311 are closed, they clamp the tab, so as to flatten the shape of the tab and ensure the accuracy when the tab is welded to the nickel sheet. The driving member 312 can be a cylinder or a motor, and a driving member 312 can be respectively provided on each pressing arm 311.

[0047] In some embodiments, the battery cell positioning member 32 includes a positioning platform 321 for carrying the battery cell 9, and the battery cell 9 is located on the positioning platform 321 when flattening the tab.

[0048] In some embodiments, as Figure 4 shown, the battery cell carrying platform 4 includes a turntable 41 and a plurality of carrying positions 42 provided on the outer periphery of the turntable 41. The plurality of carrying positions 42 are arranged at intervals along the circumferential direction of the turntable 41; the turntable 41 can rotate to move the carrying position 42 to the welding station opposite to the welding table 5. One battery cell 9 can be placed on each carrying position 42, and the turntable 41 can place a plurality of battery cells 9 through the plurality of carrying positions 42. During welding, the turntable 41 rotates to rotate the battery cell 9 to be welded to the welding table 5 for welding, so as to shorten the pause time of the welding production line and improve the production beat.

[0049] In some embodiments, as Figure 5 shown, the welding table 5 has a supporting surface 51 for supporting the tabs of the battery cell 9, and the welding table 5 can move up and down relative to the battery cell carrying platform 4. When the turntable 41 rotates, the welding table 5 moves downward to avoid interference between the welding table 5 and the carrying position 42 on the turntable 41. When the turntable 41 rotates in place, the welding table 5 rises to make the supporting surface 51 contact and support the tabs of the battery cell 9.

[0050] In some embodiments, the welding table 5 is provided with an insulating member 52. The insulating member 52 can slide up and down relative to the welding table 5, and the insulating member 52 can extend upward from the supporting surface 51 to separate the two nickel sheets on the protection board 10 for welding to the positive tab and the negative tab.

[0051] Specifically, during welding, the positive electrode tab and the negative electrode tab of the battery cell 9 are located on both sides of the insulating member 52. The insulating member 52 extends upward from between the positive electrode tab and the negative electrode tab. When the two nickel sheets of the protection board 10 are respectively placed on the positive electrode tab and the negative electrode tab, the protruding insulating member 52 separates the two nickel sheets corresponding to the positive electrode tab and the negative electrode tab, preventing the same nickel sheet from contacting the positive electrode tab and the negative electrode tab simultaneously, thereby avoiding the nickel sheet causing a battery short circuit. When welding the electrode tab and the nickel sheet, the insulating member 52 is slid downward to a position not higher than the support surface 51, so as not to affect the welding.

[0052] In some embodiments, as Figure 6 shown, the protection board carrier 6 is provided with a plurality of limiting grooves 61 for placing the protection board 10. Specifically, before welding, the protection board 10 is first placed on the protection board carrier 6. When the protection board 10 on a certain protection board carrier 6 is welded, the next protection board carrier 6 can be replaced, and the plurality of protection board carriers 6 are recycled.

[0053] In some embodiments, as Figure 7 shown, the protection board picking device 7 includes an X-axis driving device 71, a Y-axis driving device 72, a Z-axis driving device 73, and a protection board gripper 74 that are connected in sequence. The X-axis driving device 71, the Y-axis driving device 72, and the Z-axis driving device 73 can be linear driving devices each composed of a motor and a lead screw. The X-axis driving device 71, the Y-axis driving device 72, and the Z-axis driving device 73 enable the protection board gripper 74 to move in three-dimensional space along the X, Y, and Z directions. X, Y, and Z are three mutually orthogonal directions, with the X and Y directions in the horizontal direction and the Z direction in the vertical direction.

[0054] In some embodiments, as Figure 4 shown, the welding device 8 is located above the welding table 5. The battery welding equipment further includes a lifting driving device for driving the welding device 8 to lift. During welding, the lifting driving device drives the welding device 8 to move downward, so that the welding pressing gripper of the welding device 8 presses against the nickel sheet.

[0055] An embodiment of the present application provides a battery welding device. The battery cell picking device 2 picks up the battery cell 9 from the battery cell conveying device 1 and places it on the tab shaping device 3. After the tab shaping device 3 senses the battery cell 9, it flattens and shapes the tabs. Then, the battery cell picking device 2 picks up the battery cell 9 from the tab shaping device 3 and places it on the battery cell carrier 4. The battery cell picking device 2 cooperates with the vision system to perform visual edge grabbing and positioning on the battery cell 9 through a CCD camera, and at the same time corrects the angle of the battery cell 9, and places the incoming battery cells 9 individually at the loading positions 42. After placement, the battery cells are transferred. That is, the battery cells 9 are placed at fixed positions of the loading positions 42 according to the set program. This position is fixed according to the coordinates during the initial equipment debugging to ensure the consistency of feeding. The loading positions 42 can use vacuum adsorption to ensure that the battery cells 9 do not fall off when the turntable 41 rotates. The protection board picking device 7 picks up the protection board 10 from the protection board carrier 6 and places it at the welding station. When picking up, it cooperates with the CCD for visual photography to confirm the position of the protection board 10 in the protection board carrier 6. The protection board gripper 74 grabs the protection board 10 according to the signal given by the vision, and after grabbing, it is placed at the welding fixed position according to the set program. The welding position is fixed according to the coordinates during the initial equipment debugging to ensure that the protection board gripper 74 can load the protection board 10 at the same position. Then the welding device 8 presses down for laser welding. Compared with the method of manually positioning the battery cell 9 and the protection board 10, the battery welding device of this embodiment has high positioning accuracy for the battery cell 9 and the protection board 10, and can improve the yield rate of products.

[0056] The solution of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily essential to the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0057] The various embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art in this technical field to understand the embodiments disclosed herein.

Claims

1. A battery welding device, characterized in that: include: A battery cell conveying device (1), a battery cell removing device (2), a tab shaping device (3), a battery cell carrying platform (4), a welding platform (5), a protection plate carrying frame (6), a protection plate removing device (7) and a welding device (8); The battery cell removal device (2) is used to transfer the battery cell (9) from the battery cell conveying device (1) to the tab shaping device (3), and to transfer the battery cell (9) from the tab shaping device (3) to the battery cell carrying platform (4); The welding platform (5) is located on one side of the battery cell supporting platform (4), and the welding platform (5) is used to support the tabs of the battery cell (9); The protection plate removal device (7) is used to transfer the protection plate (10) from the protection plate carrier (6) to the welding table (5), and the welding device (8) is used to weld the nickel sheet on the protection plate (10) to the tab of the battery cell (9).

2. The battery welding equipment according to claim 1, characterized in that: The battery core removal device (2) comprises a manipulator (21) and a suction cup (22) provided on the manipulator (21), wherein the suction cup (22) is used for adsorbing the battery core (9).

3. The battery welding equipment according to claim 1, characterized in that: The tab shaping device (3) comprises a battery core limiting member (32) and a flattening fixture (31) for flattening the tab of the battery core (9); The flattening clamp (31) comprises two pressing arms (311) arranged opposite to each other and a driving member (312) for driving the two pressing arms (311) to open and close. The two pressing arms (311) can clamp the tabs of the battery cell (9) located on the battery cell limiting member (32).

4. The battery welding equipment according to claim 3, characterized in that: The battery core limiting member (32) comprises a limiting platform (321) for supporting the battery core (9).

5. The battery welding equipment according to claim 1, characterized in that: The battery cell supporting platform (4) comprises a turntable (41) and a plurality of supporting positions (42) arranged on the outer periphery of the turntable (41), wherein the plurality of supporting positions (42) are arranged at intervals along the circumference of the turntable (41); The turntable (41) is capable of rotating so that the carrying position (42) moves to a welding position opposite to the welding table (5).

6. The battery welding equipment according to claim 1, characterized in that: The welding platform (5) has a supporting surface (51) for supporting the tabs of the battery cell (9), and the welding platform (5) can move up and down relative to the battery cell supporting platform (4).

7. The battery welding equipment according to claim 6, characterized in that: The welding platform (5) is provided with an insulating member (52), and the insulating member (52) can slide up and down relative to the welding platform (5). The insulating member (52) can extend upward from the supporting surface (51) to separate the two nickel sheets on the protection plate (10) used for welding to the positive electrode tab and the negative electrode tab.

8. The battery welding equipment according to claim 1, characterized in that: The protection plate carrier (6) is provided with a plurality of limiting grooves (61) for placing the protection plates (10).

9. The battery welding equipment according to claim 1, characterized in that: The protection plate removing device (7) comprises an X-axis driving device (71), a Y-axis driving device (72), a Z-axis driving device (73) and a protection plate clamping claw (74) which are connected in sequence.

10. The battery welding equipment according to claim 1, characterized in that: The welding device (8) is located above the welding platform (5), and the battery welding equipment further comprises a lifting drive device for driving the welding device (8) to rise and fall.

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