Double-station welding device for cylindrical battery cell negative pole piece

Abstract

The utility model discloses a cylindrical battery cell negative pole piece double-station welding device which comprises a supporting frame, two positive pole welding head driving air cylinders are arranged at the top of the supporting frame, a guide rail is arranged on one side of the supporting frame, a sliding block is arranged on the guide rail, and the side, away from the supporting frame, of the sliding block is fixedly connected with two welding machines. Positive electrode welding head fixing plates are arranged at the bottoms of the two welding machines, positive electrode welding heads are arranged at the bottoms of the two positive electrode welding head fixing plates, welding needles are arranged on the lower portions of the two positive electrode welding heads, a material distributing structure is arranged below the welding needles, and negative electrode welding head fixing plates are arranged on the two sides of a Y-shaped material distributing fork. The two negative electrode welding heads movably penetrate through the supporting frame and are connected with the two negative electrode welding head fixing plates correspondingly. The double-station automatic production line comprises two stations, the structural design is compact and reasonable, the occupied area of equipment is saved, only one operator is needed for operation due to the fact that one machine comprises the double stations, double production can be achieved, the production efficiency of products is greatly improved, and the labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a double-station welding device for negative pole pieces of cylindrical battery cells. Background Art

[0002] During the battery production process, the negative electrode plates of the battery cells need to be welded. The existing welding equipment is large in size, and the existing welding devices usually only include one workstation. Each device must be operated by a staff member, which has high labor costs. Therefore, the traditional welding process leads to low efficiency of battery research and development and production companies, and the output cannot meet production needs. It is now unable to meet the growing market demand. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a double-station welding device for the negative electrode sheet of a cylindrical battery cell.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is: a double-station welding device for negative electrode sheets of cylindrical battery cells, comprising a support frame, the support frame is a Z-shaped structure, and two positive welding head driving cylinders are arranged side by side on the top of the support frame, and a guide rail is provided on one side of the support frame below the positive welding head driving cylinder, and a slider is provided on the guide rail, and the slider is fixedly connected to the two welding machines on the side away from the support frame, and a positive welding head fixing plate is provided at the bottom of the two welding machines, and positive welding heads are provided at the bottom of the two positive welding head fixing plates, and welding needles are provided at the lower parts of the two positive welding heads, and a material dividing structure is provided under the welding needles, and the material dividing structure comprises a Y-shaped material dividing fork and a material dividing cylinder, the Y-shaped material dividing fork is located below the welding needle, and the material dividing cylinder is located on the side of the Y-shaped material dividing fork away from the support frame, and a material dividing cylinder fixing plate is provided at the bottom of the material dividing cylinder, and negative welding head fixing plates are provided on both sides of the Y-shaped material dividing fork, and the two negative welding heads movably pass through the support frame and are respectively connected to the two negative welding head fixing plates.

[0005] Preferably, fixed brackets are provided on both sides of the bottom of the support frame.

[0006] Preferably, the welding machine is a high-frequency double-pulse resistance welding machine.

[0007] Preferably, the support frame includes a vertical plate in the middle, two top plates fixedly connected at the top, and a bottom plate fixedly connected at the bottom, and the fixing bracket fixes the bottom plate to both sides of the vertical plate by screws.

[0008] The advantages of the present invention compared with the prior art are: the present invention includes two workstations, the structural design is compact and reasonable, the floor space of the equipment is saved, and a machine including two workstations only needs one operator to operate, which can achieve double production, greatly improving the production efficiency of the product and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model at one angle.

[0010] Figure 2 It is a structural schematic diagram of the utility model at another angle.

[0011] As shown in the figure: 1. Support frame, 2. Positive welding head driving cylinder, 3. Guide rail, 4. Slider, 5. Welding machine, 6. Positive welding head fixing plate, 7. Positive welding head, 8. Welding needle, 9. Y-type dividing fork, 10. Dividing cylinder, 11. Dividing cylinder fixing plate, 12. Negative welding head fixing plate, 13. Negative welding head, 14. Fixed bracket, 1.1. Vertical plate, 1.2. Top plate, 1.3. Bottom plate. DETAILED DESCRIPTION

[0012] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0013] In conjunction with the accompanying drawings, a double-station welding device for the negative electrode sheet of a cylindrical battery cell includes a support frame 1, which is a Z-shaped structure. Two positive electrode welding head driving cylinders 2 are arranged side by side on the top of the support frame 1. A guide rail 3 is provided on one side of the support frame 1 below the positive electrode welding head driving cylinder 2. A slider 4 is provided on the guide rail 3. The slider 4 is fixedly connected to two welding machines 5 on the side away from the support frame 1. The welding machine 5 adopts a high-frequency double-pulse resistance welding machine 5. A positive electrode welding head fixing plate 6 is provided at the bottom of the two welding machines 5. A positive electrode welding head 7 is provided at the bottom of the two positive electrode welding head fixing plates 6. A welding needle 8 is provided at the bottom of the two positive electrode welding heads 7. A material dividing structure is provided below the welding needle 8. The material dividing structure includes a Y-shaped dividing structure. Material fork 9, material dividing cylinder 10, the Y-shaped material dividing fork 9 is located below the welding needle 8, the material dividing cylinder 10 is located on the side of the Y-shaped material dividing fork 9 away from the support frame 1, and a material dividing cylinder fixing plate 11 is provided at the bottom of the material dividing cylinder 10. Both sides of the Y-shaped material dividing fork 9 are provided with negative electrode welding head fixing plates 12, and two negative electrode welding heads 13 are movable through the support frame 1 and are respectively connected to the two negative electrode welding head fixing plates 12. Fixed brackets 14 are provided on both sides of the bottom of the support frame 1. The support frame 1 includes a middle vertical plate 1.1, two top plates 1.2 fixedly connected at the top and a bottom plate 1.3 fixedly connected at the bottom. The fixed bracket 14 fixes the bottom plate 1.3 to the two sides of the vertical plate 1.1 with screws.

[0014] During the specific implementation of the present invention, the welding needle 8 is manually inserted into the middle hole of the battery cell to the bottom of the steel shell in advance. The Y-shaped material dividing fork 9 is pushed out by the material dividing cylinder 10, separating the two products to be welded by a certain distance to prevent short circuits during welding. At the same time, the two products are pressed against the negative electrode welding head 13. The positive electrode welding head driving cylinder 2 is pushed out, driving the positive electrode welding head 7 to press the corresponding welding needle 8. When the welding needle 8 is pressed, the program sends a discharge welding signal to the two high-frequency double-pulse resistance welding machines 5. The welding machines 5 complete the welding of the negative electrode sheet of the battery cell and the bottom of the steel shell within the set time. When the set welding cooling time expires, the positive electrode welding head driving cylinder 2 is withdrawn, and the material dividing cylinder 10 is withdrawn. The feeding mechanism feeds two products at once from the feeding direction and simultaneously ejects the two welded products.

[0015] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A double-station welding device for negative electrode sheets of cylindrical battery cells, comprising a support frame, characterized in that: The support frame is a Z-shaped structure, and two positive welding head driving cylinders are arranged side by side on the top of the support frame. A guide rail is provided on one side of the support frame below the positive welding head driving cylinder, and a slider is provided on the guide rail. The slider is fixedly connected to the two welding machines on the side away from the support frame, and a positive welding head fixing plate is provided at the bottom of the two welding machines. The bottoms of the two positive welding head fixing plates are provided with positive welding heads, and welding needles are provided at the lower parts of the two positive welding heads. A dividing structure is provided under the welding needles, and the dividing structure includes a Y-shaped dividing fork and a dividing cylinder. The Y-shaped dividing fork is located below the welding needle, and the dividing cylinder is located on the side of the Y-shaped dividing fork away from the support frame. A dividing cylinder fixing plate is provided at the bottom of the dividing cylinder, and negative welding head fixing plates are provided on both sides of the Y-shaped dividing fork. The two negative welding heads movably pass through the support frame and are respectively connected to the two negative welding head fixing plates.

2. A double-station welding device for negative electrode sheets of cylindrical battery cells according to claim 1, characterized in that: Fixed brackets are provided on both sides of the bottom of the support frame.

3. The double-station welding device for negative electrode sheets of cylindrical battery cells according to claim 1, characterized in that: The welding machine adopts a high-frequency double-pulse resistance welding machine.

4. A double-station welding device for negative electrode sheets of cylindrical battery cells according to claim 2, characterized in that: The support frame includes a vertical plate in the middle, two top plates fixedly connected at the top, and a bottom plate fixedly connected at the bottom. The fixing bracket fixes the bottom plate to both sides of the vertical plate by screws.

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