Automatic equipment for welding process of zinc-based square battery pole piece

Abstract

The utility model belongs to the technical field of batteries, particularly relates to automatic equipment for a welding process of zinc-based square battery pole pieces, and aims to solve the problems that in the prior art, screws are easy to loosen, poor connection between pole lugs occurs, poor welding occurs, and positive and negative pole pieces vibrate during friction heat welding due to screw mounting, so that the welding quality is poor. In order to solve the problems, the utility model provides the following scheme that the powder on the pole piece is loosened and falls off, and the device comprises a workbench; the front-back motor module is fixedly installed on the workbench, the up-down motor module is arranged on the front-back motor module, the welding gun fixing block is fixedly installed on the up-down motor module, the cold welding gun is fixedly arranged on the welding gun fixing block, and a protection plate is arranged at one end of the welding gun fixing block. The lithium ion battery is simple in structure, solves the problems of loosening of screws in a screw joint mode, poor welding of a negative plate in a resistance welding mode and falling of powder on the negative plate in an ultrasonic welding mode, and is convenient for people to use.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an automatic welding process equipment for zinc-based square battery pole pieces. Background Art

[0002] In the production process of zinc-based batteries, the main base material of the positive electrode ear is nickel, and the main base material of the negative electrode ear is copper. The battery assembly process requires the positive and negative electrode plates to be connected in series. The existing main connection processes are as follows:

[0003] 1. Screw connection method: Make round holes at the corresponding positions of the positive and negative tabs, pass the screws through the round holes, and tighten the nuts to press the positive and negative tabs together.

[0004] 2. Resistance welding: Resistance welding is when current passes through the positive and negative tabs. When the tabs come into contact, the resistance at the contact point far exceeds the resistance within the metal. Therefore, a large amount of current passes through the tabs, heating them to a red heat and achieving high plasticity. The applied pressure causes all the tabs to connect together.

[0005] 3. Ultrasonic welding method: The Hertz current is converted into electrical energy through an ultrasonic generator, and then converted into mechanical motion of the same frequency through a transducer. The positive and negative ears are welded together by friction heat welding.

[0006] In the prior art, screws are used to fix the positive and negative tabs. After the battery is assembled, the screws may loosen when the battery is subjected to external forces such as transportation and work, resulting in poor connection between the tabs. The positive and negative tabs are connected by multi-layer metal sheets. The positive and negative materials are nickel, and the negative material is copper. The resistance of nickel is higher than that of copper, and copper is commonly used for power lines, which is the same as the negative tabs. When a large current is passed, the positive nickel has a high resistance and will melt first, making welding easy. The negative copper is the same as a conductor, and the resistance heat makes it difficult to melt the multi-layer tabs, which is prone to poor welding. When the mechanical movement of the same frequency of the ultrasonic generator is used and friction heat is used for welding, the positive and negative tabs vibrate, and the powder on the tabs will shake loose and fall off. Utility Model Content

[0007] The purpose of the present invention is to solve the problem in the prior art that, after the battery is assembled, the screws are loosened when the battery is transported, worked, or moved by external forces, resulting in poor connection between the tabs. The positive and negative tabs are connected by multi-layer metal sheets, the positive and negative materials are nickel, and the negative material is copper. The resistance of nickel is higher than that of copper, and copper is commonly used as the power supply circuit, which is the same as the negative tab. When a large current is applied, the positive nickel has a high resistance and will melt first, making welding easy. The negative copper is the same as a conductor, and the resistance heat makes it difficult to melt the multi-layer tabs, which is prone to poor welding. Through the mechanical movement of the same frequency of the ultrasonic generator, friction heat energy is used for welding, and the positive and negative tabs vibrate, and the powder on the tabs will shake loose and fall off. An automatic welding process equipment for zinc-based square battery tabs is proposed.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] An automatic welding process equipment for zinc-based square battery pole pieces, comprising:

[0010] Workbench;

[0011] The front and rear motor modules are fixedly mounted on the workbench. The upper and lower motor modules are provided on the front and rear motor modules. The upper and lower motor modules are fixedly mounted with a welding gun fixing block. A cold welding gun is fixed on the welding gun fixing block. A protective plate is provided at one end of the welding gun fixing block for protecting the cold welding gun during welding. A cylinder fixing seat is fixedly mounted on the workbench. A clamping cylinder is fixed on the cylinder fixing seat. A lug clip is provided on the clamping cylinder. A cold water joint is provided at the bottom of the clamping cylinder.

[0012] The disassembly component is set on the welding gun fixing block and is used to protect the protective plate.

[0013] Furthermore, a battery positioning block is fixedly installed on the workbench, and a battery product is provided on one side of the battery positioning block.

[0014] Furthermore, a tab clamping switch is provided on one side of the workbench, and a welding start switch is provided on one side of the workbench near the tab clamping switch.

[0015] Furthermore, the disassembly assembly includes a disassembly cavity provided on the welding gun fixing block, a fixing plate is fixedly installed on an inner wall of one side of the disassembly cavity, one end of the fixing plate is fixedly connected to a fixing rod, and a spring is sleeved on the fixing rod.

[0016] Furthermore, a pressure plate is slidably connected to the fixed rod, the pressure plate is fixedly connected to one end of the spring, a push rod is fixedly connected to the pressure plate, the top of the push rod is located above the welding gun fixed block, and two oblique rods are symmetrically fixedly connected to one side of the pressure plate.

[0017] Furthermore, telescopic rods are fixedly connected on both sides of the fixed plate, and spring 2 is sleeved on the two telescopic rods. One end of the two telescopic rods is fixedly connected to an angled plate, and the two angled plates are respectively fixedly connected to one end of the two springs 2. A clamping plate is fixedly connected to one side of the two angled plates. When the two springs 2 release the elastic force, the two angled plates can be driven away from each other.

[0018] Furthermore, two sliding grooves are symmetrically provided on the inner side of the protective plate, and a card slot is provided on one side wall of the two sliding grooves. The two angled plates are located in the two sliding grooves, and the two card plates are respectively located in the two card slots. When the two card plates are located in the two card slots, the protective plate can be fixed.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. This solution uses high-frequency discharge of electric sparks to weld the positive and negative tabs together through high-frequency discharge of electric sparks on the top of the positive and negative tabs, effectively solving the problem of loose screws in the screw connection method;

[0021] 2. This solution uses high-frequency discharge of electric sparks to melt the positive and negative tabs simultaneously, effectively solving the problem of poor welding of the negative electrode sheet in resistance welding.

[0022] 3. This solution uses high-frequency discharge of electric sparks to discharge high-frequency discharge on the top of the positive and negative tabs. During the process, there is no shaking of the battery and the pole piece, which can effectively solve the problem of powder falling on the pole piece caused by ultrasonic welding.

[0023] The utility model has a simple structure, solves the problem of loose screws in the screw connection method, poor welding of the negative electrode sheet in the resistance welding method and powder falling off of the electrode sheet in the ultrasonic welding method, and is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of an automatic welding process equipment for zinc-based square battery pole pieces proposed in the present invention;

[0025] Figure 2 This utility model proposes a zinc-based square battery electrode welding process automatic equipment Figure 1 Schematic diagram of the structure of part A;

[0026] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the welding gun fixing block and the protective plate of the automatic equipment for welding the zinc-based square battery electrode proposed in the utility model;

[0027] Figure 4 This utility model proposes a zinc-based square battery electrode welding process automatic equipment Figure 3Schematic diagram of the structure of part B;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the protective plate, slide groove and clamping groove of the automatic equipment for welding the zinc-based square battery electrode proposed in the utility model;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the bevel plate and the clamping plate of the automatic equipment for welding the zinc-based square battery pole piece proposed by the utility model.

[0030] In the figure: 1. Battery product; 2. Cold welding gun; 3. Welding gun fixing block; 4. Clamping cylinder; 5. Tab clamp; 6. Cold water joint; 7. Cylinder fixing seat; 8. Battery positioning block; 9. Tab clamping switch; 10. Welding start switch; 11. Upper and lower motor modules; 12. Front and rear motor modules; 13. Workbench; 14. Protective plate; 15. Disassembly chamber; 16. Fixing plate; 17. Fixing rod; 18. Spring 1; 19. Pressing plate; 20. Push rod; 21. Diagonal rod; 22. Telescopic rod; 23. Spring 2; 24. Bevel plate; 25. Card plate; 26. Slide groove; 27. Card groove. DETAILED DESCRIPTION

[0031] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all the embodiments.

[0032] Example 1

[0033] Reference Figures 1-6 , an automatic welding process equipment for zinc-based square battery pole pieces, comprising:

[0034] Workbench 13;

[0035] The front and rear motor modules 12 are fixedly mounted on the workbench 13. The upper and lower motor modules 11 are provided on the front and rear motor modules 12. The upper and lower motor modules 11 are fixedly mounted with a welding gun fixing block 3. The welding gun fixing block 3 is fixedly provided with a cold welding gun 2, and one end of the welding gun fixing block 3 is provided with a protective plate 14 for protecting the cold welding gun 2 during welding. A cylinder fixing seat 7 is fixedly mounted on the workbench 13. A clamping cylinder 4 is fixedly provided on the cylinder fixing seat 7. A tab clip 5 is provided on the clamping cylinder 4. The clamping cylinder 4 can drive the tab clip 5 to complete the clamping work. A cold water connector 6 is provided at the bottom of the clamping cylinder 4. The cold water connector 6 transports cold water to the tab to cool the tab.

[0036] The disassembly assembly is arranged on the welding gun fixing block 3 and is used to protect the protective plate 14 .

[0037] In this embodiment, a battery positioning block 8 is fixedly mounted on the workbench 13 , and a battery product 1 is provided on one side of the battery positioning block 8 .

[0038] In this embodiment, a tab clamping switch 9 is provided on one side of the workbench 13 , and a welding start switch 10 is provided on one side of the workbench 13 near the tab clamping switch 9 .

[0039] In this embodiment, the disassembly assembly includes a disassembly chamber 15 provided on the welding gun fixing block 3, a fixing plate 16 is fixedly installed on the inner wall of one side of the disassembly chamber 15, one end of the fixing plate 16 is fixedly connected to a fixing rod 17, a spring 18 is sleeved on the fixing rod 17, a pressure plate 19 is slidably connected to the fixing rod 17, the pressure plate 19 is fixedly connected to one end of the spring 18, a push rod 20 is fixedly connected to the pressure plate 19, the top of the push rod 20 is located above the welding gun fixing block 3, one side of the pressure plate 19 is symmetrically fixedly connected to two oblique rods 21, both sides of the fixing plate 16 are fixedly connected to telescopic rods 22, and the two telescopic rods 22 are sleeved with Spring 23, one end of the two telescopic rods 22 is fixedly connected to an angled plate 24, and the two angled plates 24 are respectively fixedly connected to one end of the two springs 23, and one side of the two angled plates 24 is fixedly connected to a clamping plate 25. When the two springs 23 release the elastic force, the two angled plates 24 can be driven away from each other. Two sliding grooves 26 are symmetrically provided on the inner side of the protective plate 14, and a clamping groove 27 is provided on one side wall of the two sliding grooves 26. The two angled plates 24 are both located in the two sliding grooves 26, and the two clamping plates 25 are respectively located in the two clamping grooves 27. When the two clamping plates 25 are located in the two clamping grooves 27, the protective plate 14 can be fixed.

[0040] The implementation principle of the automatic equipment for welding zinc-based square battery pole pieces in the embodiment of the present application is as follows: when the cold welding gun 2 needs to be repaired or replaced, the push rod 20 is pulled to drive the pressure plate 19 to slide on the fixed rod 17, and the spring 18 is compressed. The pressure plate 19 drives the two inclined rods 21 to move and squeeze the two bevel plates 24 to slide close to each other in the two slide grooves 26, and compresses the two springs 23. The two bevel plates 24 drive the two clamping plates 25 to disengage from the two clamping grooves 27, and the protective plate 14 can be disassembled. When the protective plate 14 needs to be installed, When the push rod 20 is pulled, the pressure plate 19 is driven to slide on the fixed rod 17 and the spring 1 18 is compressed. The pressure plate 19 drives the two oblique rods 21 to move and squeeze the two bevel plates 24 close to each other, and compresses the two springs 23. The two bevel plates 24 drive the two clamping plates 25 close to each other, and the two slide grooves 26 on the protective plate 14 fit with the two bevel plates 24. At the same time, the push rod 20 is released, and the elastic force released by the two springs 23 drives the two bevel plates 24 away from each other. The two bevel plates 24 drive the two clamping plates 25 away from each other and snap into the two clamping plates. The protective plate 14 can be installed and fixed in the slot 27. The battery product 1 is placed on the workbench 13 with the tab facing upward. The front and rear motor modules 12 are used to drive the upper and lower motor modules 11 to advance forward, and the tab clamps 5 are located above the tabs on the battery product 1. The upper and lower motor modules 11 are used to move downward so that the tab clamps 5 are located on both sides of the tabs. The tab clamping switch 9 is pressed to drive the clamping cylinder 4 to clamp the tabs. The top of the tabs exceeds the clamping clamp by 2-4 mm to ensure that the tops of all the tabs of the positive and negative electrodes are flush. The welding start switch 1 is pressed. 0. The cold welding gun 2 welds the tab clamped on the clamping cylinder 4 through the set route. During welding, the distance between the tungsten needle of the welding gun and the top of the tab is 0.5-2mm. The muzzle of the welding gun at the initial welding position and the final welding position cannot exceed the edge of the tab. The welding circuit is controlled above the tab and set along the straight line of the tab. During the welding process, cold water is delivered to the tab by the cold water joint 6 to cool the tab. After welding is completed, the cold welding gun automatically returns to the initial position, press the tab clamping switch 9, the clamping cylinder 4 releases the tab, and the battery is removed to complete the tab welding.

[0041] Example 2

[0042] The rest of the embodiment 2 is the same as the embodiment 1, with the difference being that a movable positioning block is slidably connected to the corresponding position of the battery positioning block 8 on the workbench 13, and an electric push rod is fixedly provided on one side of the movable positioning block, and one end of the electric push rod is fixedly connected to a support plate, which is fixedly installed on the workbench 13. When the battery product 1 is placed on one side of the battery positioning block 8, the electric push rod can be used to drive the movable positioning block to move and limit and fix the other side of the battery product 1, thereby fixing the other side of the battery product 1 and improving its stability during the welding process. All structures in this application can be selected in terms of material and length according to actual usage. The accompanying drawings are all schematic structural diagrams, and the specific actual dimensions can be appropriately adjusted.

[0043] The above is only a preferred specific implementation method of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. An automatic welding process equipment for zinc-based square battery pole pieces, characterized in that: include: Workbench (13); Front and rear motor modules (12) are fixedly mounted on a workbench (13); upper and lower motor modules (11) are provided on the front and rear motor modules (12); a welding gun fixing block (3) is fixedly mounted on the upper and lower motor modules (11); a cold welding gun (2) is fixedly mounted on the welding gun fixing block (3); and a protective plate (14) is provided at one end of the welding gun fixing block (3) for protecting the cold welding gun (2) during welding; a cylinder fixing seat (7) is fixedly mounted on the workbench (13); a clamping cylinder (4) is fixedly mounted on the cylinder fixing seat (7); a pole ear clip (5) is provided on the clamping cylinder (4); and a cold water joint (6) is provided at the bottom of the clamping cylinder (4); The disassembly assembly is arranged on the welding gun fixing block (3) and is used for protecting the protective plate (14).

2. The automatic welding process equipment for zinc-based square battery pole pieces according to claim 1, characterized in that: A battery positioning block (8) is fixedly mounted on the workbench (13), and a battery product (1) is provided on one side of the battery positioning block (8).

3. The automatic welding process equipment for zinc-based square battery pole pieces according to claim 1, characterized in that: A tab clamping switch (9) is provided on one side of the workbench (13), and a welding start switch (10) is provided on one side of the workbench (13) near the tab clamping switch (9).

4. The automatic welding process equipment for zinc-based square battery pole pieces according to claim 1, characterized in that: The disassembly assembly comprises a disassembly chamber (15) provided on a welding gun fixing block (3); a fixing plate (16) is fixedly mounted on an inner wall of one side of the disassembly chamber (15); one end of the fixing plate (16) is fixedly connected to a fixing rod (17); and a spring (18) is sleeved on the fixing rod (17).

5. The automatic welding process equipment for zinc-based square battery pole pieces according to claim 4, characterized in that: A pressure plate (19) is slidably connected to the fixed rod (17), and the pressure plate (19) is fixedly connected to one end of a spring (18). A push rod (20) is fixedly connected to the pressure plate (19), and the top end of the push rod (20) is located above the welding gun fixed block (3). Two oblique rods (21) are symmetrically fixedly connected to one side of the pressure plate (19).

6. The automatic welding process equipment for zinc-based square battery pole pieces according to claim 4, characterized in that: Both sides of the fixed plate (16) are fixedly connected with telescopic rods (22), and springs (23) are sleeved on the two telescopic rods (22). One end of the two telescopic rods (22) is fixedly connected with an angled plate (24), and the two angled plates (24) are respectively fixedly connected to one end of the two springs (23). One side of the two angled plates (24) is fixedly connected with a clamping plate (25).

7. The automatic welding process equipment for zinc-based square battery pole pieces according to claim 6, characterized in that: Two sliding grooves (26) are symmetrically provided on the inner side of the protective plate (14), a clamping groove (27) is provided on one side wall of the two sliding grooves (26), the two bevel plates (24) are both located in the two sliding grooves (26), and the two clamping plates (25) are respectively located in the two clamping grooves (27).

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