Transfer welding device for a composite collector

Abstract

Provided is a transfer welding apparatus for a composite current collector that realizes electrical continuity between the front and back of a composite material, has good welding efficiency, and significantly saves the loading time of the composite material and the copper foil for transfer welding. 【Solution means】The transfer welding apparatus for a composite current collector includes an apparatus main body 1 and a composite material unwinding roller 2 detachably attached inside the apparatus main body, and a winding shaft roller 7 for winding the material after welding is attached inside the apparatus main body. A welder is fixedly attached inside the apparatus main body. The welder includes a pressure indicator, a transducer, and a servo motor, and a pressure cylinder for applying pressure to the material is provided on the bottom surface of the welder, and simultaneously performs transfer welding on the blank tabs on both sides of the composite current collector.

Description

Technical Field

[0001] The present invention relates to the technical field of transfer welding of composite materials, and specifically to a transfer welding device for a composite current collector.

Background Art

[0002] Composite materials use PET, PP, or PI as the intermediate layer material, and deposit metal materials on the front and back by vapor deposition, spraying, etc., replacing the conventional aluminum positive electrode and copper negative electrode materials. Compared with general metal materials, composite materials have the characteristics of being lightweight and highly safe, so they can greatly improve the energy density and safety of lithium batteries.

[0003] Since there is a PET material in the intermediate layer of the composite material and the metals on the front and back of the composite material cannot conduct electricity smoothly, when the composite material is made into a battery, its conductivity is greatly reduced. In order to make the front and back of the composite material conductive, there are currently many methods, such as the method of riveting the tab and the TAP sheet, the method of directly welding the TAP sheet by laser welding, or the method of welding by ultrasonic waves.

[0004] However, due to the presence of intermediate polymer materials, the performance of batteries made by these welding methods is not as good as that of the original pure metal materials. Therefore, in the process of replacing conventional copper and aluminum foils with composite materials, how to solve the conductive performance and other issues of composite current collector batteries has become one of the very important research directions.

[0005] Therefore, in order to solve the above problems, a transfer welding device for a composite current collector is proposed.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The object of the present invention is to provide a transfer welding device for a composite current collector in order to solve the problem that due to the existence of current intermediate polymer materials, the performance of batteries made by these welding methods is far from better than that of the original pure metal materials, and it is difficult to solve the conductivity problem of composite current collector batteries in the process of replacing conventional copper and aluminum foils with composite materials.

Means for Solving the Problems

[0007] In order to achieve the above object, the present invention provides the following technical solutions. A transfer welding device for a composite current collector, comprising a device body and a composite material unwinding roller removably mounted inside the device body, and a winding shaft roller for winding the material after welding is mounted inside the device body, a welding machine is fixedly mounted inside the device body, the welding machine is provided with a pressure indicator, a transducer, and a servo motor, and a pressure cylinder for applying pressure to the material is provided on the bottom surface of the welding machine.

[0008] Preferably, the welding machine is provided with a vibrating wheel group fixedly mounted at the central part, and the transducer provided on the welding machine converts the servo motor into ultrasonic vibration, transmits it to the material by the vibrating wheel group, generates heat by mutual friction, and is used to realize welding.

[0009] Preferably, a tape connection platform is fixedly mounted inside the device body, positioning and pressing rods are provided on both the left and right sides of the upper surface of the tape connection platform, suction slots are opened on both the left and right sides of the upper surface of the tape connection platform, a cutting guide groove is opened at the central position of the upper surface of the tape connection platform, and after the cutting guide groove edges the material, adhesion is realized.

[0010] Preferably, a composite material tension roller is provided inside the apparatus main body, and a composite material secondary deviation correction roller is provided inside the apparatus main body, and a composite material swing bar assembly is provided inside the apparatus main body, and a lower foil material unwinding roller is provided below the inside of the apparatus main body.

[0011] Preferably, a drive motor is fixedly provided at the outer end of the composite material swing bar assembly, and a swing bar body is rotatably provided above the composite material swing bar assembly, and the end of the swing bar body is fixedly connected to the end of the output shaft of the drive motor.

[0012] Preferably, a lower unwinding swing bar assembly is provided inside the apparatus main body, and a lower unwinding tension roller is provided inside the apparatus main body, and a lower unwinding secondary deviation correction roller is provided inside the apparatus main body, and an upper foil material unwinding roller is provided above the inside of the apparatus main body.

[0013] Preferably, an upper unwinding swing bar assembly is provided above the inside of the apparatus main body, and an upper unwinding secondary deviation correction roller is provided inside the apparatus main body, and a post-welding dust collector is provided inside the apparatus main body, and a welding detector is provided inside the apparatus main body. At the same time, a drive roller assembly is provided on the right side inside the apparatus main body.

[0014] Preferably, a coupling motor is fixedly provided at the end of the drive roller assembly, and a drive roll is provided above the drive roller assembly, and the drive roll is fixedly connected to the end of the output shaft of the coupling motor, and the drive roll is used to flatten the material by a pressure roller to avoid wrinkles and deformation.

[0015] Preferably, a labeler is provided above the inside of the apparatus main body, and a flattening roller is provided on the right side inside the apparatus main body, and a winding tension roller is provided on the right side inside the apparatus main body, and a winding swing roller for stabilizing the tension of the material after welding is provided on the right side inside the apparatus main body.

Advantages of the Invention

[0016] Compared with the prior art, the transfer welding device of the composite current collector of the present invention specifically has the following beneficial effects.

[0017] 1. The pressure cylinder below the welding machine applies a joining pressure to the material. The transducer converts the rotational power of the servo motor into ultrasonic vibration. The vibration wheel group drives the friction between the lower joining materials through vibration, and finally reaches the recrystallization temperature to ensure that the materials are integrally welded. At the same time, in this process, welding fumes and dust are absorbed by the dust collector to avoid dust adhering to the materials and affecting their subsequent use.

[0018] 2. The end of the material enters the positioning and pressing rod on the right side of the tape connection platform. After descending, it presses and positions the material. At the same time, the adsorption slot on the right adsorbs the positioned material. The cutting blade moves along the cutting guide groove to cut the end of the material. The end of the other end of the material is guided inside the positioning and pressing rod on the left side of the tape connection platform, presses and positions the foil material. At the same time, the cutting blade cuts the material again along the cutting guide groove, and finally adheres the composite material with tape.

[0019] 3. The lower foil unwinding roller and the upper foil unwinding roller on the lower side of the device body unwind the foil material. Thereby, the lower unwinding tension roller, the lower unwinding secondary deviation correction roller, and the upper unwinding secondary deviation correction roller tense the two types of foil materials during the unwinding process and control the tension during unwinding and conveying.

[0020] 4. When the unwinding of the material is too slow and the tension becomes too large, pull the winding swing rod assembly to rotate clockwise. After shifting from the initial position, accelerate the rotation by the driving motor. The swing rod body accelerates the conveyance of the wound material. Thereby, the swing rod assembly reversely rotates counterclockwise to reach the zero position due to the elastic action, and the driving motor moves at the original speed to ensure the balance of the resultant force during the conveyance of the material. If the unwinding speed of the material is too fast, the swing bar assembly rotates counterclockwise and engages with the material being conveyed by the swing bar body, and the drive motor decelerates the rotation. Thus, the resultant force of the material at the position of the swing bar assembly is adjusted until the tensile force received by the swing bar assembly is balanced and it rotates to the zero position.

[0021] 5. The drive roller assembly presses the welded material, assists in conveying the material while rolling the material, and at the same time, the welding detector marks defective welded products. Then, the labeler labels the defective products. Finally, after the flattening roller rolls the material again, it passes through the take-up tension roller and the take-up swing roller, and the welded material is wound by the take-up shaft roller.

Brief Description of the Drawings

[0022]

Figure 1

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Figure 7

Modes for Carrying Out the Invention

[0023] The following clearly and completely describes the technical solution in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0024] Referring to FIGS. 1 to 7, the present invention provides the following technical solutions.

[0025] Embodiment 1 In order to solve the problems existing in the transfer welding operation of conventional composite materials, this embodiment discloses the following technical solutions. A transfer welding device for a composite current collector, comprising a device body 1 and a composite material unwinding roller 2 removably mounted inside the device body 1, and a winding shaft roller 7 for winding the welded material is mounted inside the device body 1. A welding machine 8 is fixedly mounted inside the device body 1. The welding machine 8 includes a pressure indicator 801, a transducer 802, and a servo motor 803. A pressure cylinder 804 for applying pressure to the material is provided on the bottom surface of the welding machine 8. The welding machine 8 is provided with a vibration wheel group 805 fixedly mounted at the central part. The transducer 802 provided in the welding machine 8 converts the servo motor 803 into ultrasonic vibration, transmits it to the material by the vibration wheel group 805, generates heat by mutual friction, and is used to realize welding.

[0026] As shown in FIGS. 2 and 5, the material to be conveyed stays at the central part of the welding machine 8. The pressure cylinder 804 at the bottom of the welding machine 8 operates to apply the necessary pressure to the material, ensuring the stability of the joint between the materials. At the same time, the servo motor 803 rotates and operates, and the transducer 802 converts the rotational power of the servo motor 803 into ultrasonic vibration, driving the vibration wheel group 805 to drive the friction between the lower joining materials by vibration, finally ensuring that the material reaches the recrystallization temperature and is integrally welded. At the same time, in this process, the welding fumes and dust are absorbed by the dust collector 16 to avoid the dust adhering to the materials and affecting their subsequent use.

[0027] Example 2 To solve the problems existing in the transfer welding operation of conventional composite materials, this example discloses the following technical solutions. Inside the device body 1, a tape connection platform 3 is fixedly installed. On the left and right sides of the upper surface of the tape connection platform 3, positioning and pressing rods 301 are provided. On the left and right sides of the upper surface of the tape connection platform 3, adsorption slots 302 are opened. At the central position of the upper surface of the tape connection platform 3, a cutting guide groove 303 is opened. After the cutting guide groove 303 edges the material, adhesion is realized.

[0028] As shown in FIGS. 2 to 3, the device body 1 unwinds the material by the composite material unwinding roller 2 at the lower left inside, and the end of the material enters the upper tape connection platform 3. The positioning and pressing rod 301 provided on the upper right side of the tape connection platform 3 is controlled by an operation button. Thereby, after the positioning and pressing rod 301 descends, it presses and positions the material. At the same time, the adsorption slot 302 on the right adsorbs the positioned material. The cutting blade moves along the cutting guide groove 303 to cut the end of the material, and guides the end of the other end of the material inside the positioning and pressing rod 301 on the left side of the tape connection platform 3, pressing and positioning the foil material. At the same time, the cutting blade cuts the material again along the cutting guide groove 303, and finally adheres the composite material with tape.

[0029] Example 3 In order to solve the problems existing in the transfer welding operation of conventional composite materials, this example discloses the following technical solutions. Inside the apparatus main body 1, a composite material tension roller 4 is provided, and inside the apparatus main body 1, a composite material secondary deviation correction roller 5 is provided, and inside the apparatus main body 1, a composite material swing bar assembly 6 is provided, and below the inside of the apparatus main body 1, a lower foil material unwinding roller 9 is provided, inside the apparatus main body 1, a lower unwinding swing bar assembly 10 is provided, and inside the apparatus main body 1, a lower unwinding tension roller 11 is provided, and inside the apparatus main body 1, a lower unwinding secondary deviation correction roller 12 is provided, and above the inside of the apparatus main body 1, an upper foil material unwinding roller 13 is provided, above the inside of the apparatus main body 1, an upper unwinding swing bar assembly 14 is provided, and inside the apparatus main body 1, an upper unwinding secondary deviation correction roller 15 is provided, and inside the apparatus main body 1, a post-welding dust collector 16 is provided, and inside the apparatus main body 1, a welding detector 17 is provided. At the same time, a drive roller assembly 18 is provided on the right side inside the apparatus main body 1.

[0030]

[0030] As shown in FIGS. 2 and 4, the lower foil material unwinding roller 9 and the upper foil material unwinding roller 13 of the apparatus main body 1 unwind the foil material, whereby the lower unwinding tension roller 11, the lower unwinding secondary deviation correction roller 12, and the upper unwinding secondary deviation correction roller 15 tension the two types of foil materials during the unwinding process and control the tension during unwinding and conveyance.

[0031] Example 4 In order to solve the problems existing in the transfer welding operation of conventional composite materials, this example discloses the following technical solutions. A drive motor 602 is fixedly provided at the outer end of the composite material swing bar assembly 6, and above the composite material swing bar assembly 6, a swing bar body 601 is rotatably provided, and the end of the swing bar body 601 is fixedly connected to the end of the output shaft of the drive motor 602.

[0032] The composite material swing bar assembly 6, the lower unwinding swing bar assembly 10, and the upper unwinding swing bar assembly 14 installed inside the device body 1 respectively correct the combined force of the composite material and two types of foil materials. When the unwinding speed of the material is too slow, the tension of the material itself becomes excessive, pulling the winding swing bar assembly to rotate clockwise. After shifting from the initial position, the rotation is accelerated by the drive motor 602. The swing bar body 601 accelerates and conveys the wound material. As a result, the swing bar assembly reversely rotates counterclockwise due to the elastic action and reaches the zero position. The drive motor 602 moves at the original speed to ensure the balance of the combined force during the conveyance of the material.

[0033] Furthermore, when the unwinding speed of the material is too fast, the material on the swing bar body 601 is in a loose state. In this case, the entire swing bar assembly rotates counterclockwise and joins the material being conveyed by the swing bar body 601. The rotation is decelerated by the drive motor 602. Thus, the combined force of the material at the position of the swing bar assembly is adjusted until the tensile force received by the swing bar assembly is balanced and it rotates to the zero position.

[0034] Example 5 In order to solve the problems existing in the transfer welding operation of conventional composite materials, this example discloses the following technical solutions. A coupling motor 1801 is fixedly provided at the end of the drive roller assembly 18. A drive roll 1802 is provided above the drive roller assembly 18. The drive roll 1802 is fixedly connected to the end of the output shaft of the coupling motor 1801 and is used to flatten the material by the pressure roller to avoid wrinkles and deformation. A labeler 19 is provided above the inside of the device body 1. A flattening roller 20 is provided on the right side inside the device body 1. A winding tension roller 21 is provided on the right side inside the device body 1. A winding swing roller 22 for stabilizing the tension of the material after welding is provided on the right side inside the device body 1.

[0035] As shown in FIGS. 2 and 6, the welded material is conveyed to the driving roller assembly 18, and the driving rolls 1802 and the pressure rollers on both the upper and lower sides of the driving roller assembly 18 press the welded material. At the same time, the coupling motor 1801 rotates the driving roll 1802 to assist in conveying the material while roll-rolling the material. At the same time, the welding detector 17 provided inside the apparatus main body 1 marks defective welded products, and then the labeler 19 labels the defective products. Finally, after the flattening roller 20 performs roll-rolling again, the welded material passes through the take-up tension roller 21 and the take-up swing roller 22, and is taken up by the take-up shaft roller 7.

[0036] The present invention has been described in detail with reference to the above embodiments. However, those skilled in the art can still modify the technical solutions described in the above embodiments or perform equivalent replacements for some of their technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle scope of the present invention should be included within the protection scope of the present invention.

Explanation of Reference Numerals

[0037] 1. Apparatus main body 2. Composite material unwinding roller 3. Tape connection platform 301. Positioning and pressing rod 302. Suction slot 303. Cutting guide groove 4. Composite material tension roller 5. Composite material secondary deviation correction roller 6. Composite material swing rod assembly 601. Swing rod body 602. Driving motor 7. Take-up shaft roller 8. Welder 801. Pressure indicator 802. Transducer 803. Servo motor 804. Pressure cylinder 805. Vibration wheel group 9. Lower foil material unwinding roller 10. Lower unwind swing bar assembly 11. Lower unwind tension roller 12. Lower unwind secondary deviation correction roller 13. Upper foil unwind roller 14. Upper unwind swing bar assembly 15. Upper unwind secondary deviation correction roller 16. Dust collector 17. Weld detector 18. Drive roller assembly 1801. Coupling motor 1802. Drive roll 19. Labeler 20. Flattening roller 21. Take-up tension roller 22. Take-up swing roller

Claims

1. A transfer welding device for a composite current collector, comprising a device main body (1) and a composite material unwinding roller (2) removably attached inside the device main body (1), and a winding shaft roller (7) for winding the material after welding is attached inside the device main body (1). In the transfer welding device for a composite current collector in which a welding machine (8) is fixedly attached inside the device main body (1), the welding machine (8) includes a pressure gauge (801), a transducer (802), and a servo motor (803), and a pressure cylinder (804) for applying pressure to the material is provided on the bottom surface of the welding machine (8). A transfer welding device for a composite current collector, characterized in that.

2. The welding machine (8) is provided with a vibration wheel group (805) fixedly attached to the central part, and the transducer (802) provided in the welding machine (8) converts the servo motor (803) into ultrasonic vibration, transmits it to the material by the vibration wheel group (805), generates heat by mutual friction, and is used to realize welding. The transfer welding device for a composite current collector according to claim 1, characterized in that.

3. A tape connection platform (3) is fixedly attached inside the device main body (1), positioning and pressing rods (301) are provided on both the left and right sides of the upper surface of the tape connection platform (3), suction slots (302) are opened on both the left and right sides of the upper surface of the tape connection platform (3), and a cutting guide groove (303) is opened at the central position of the upper surface of the tape connection platform (3). Furthermore, after the cutting guide groove (303) borders the material, adhesion is realized. The transfer welding device for a composite current collector according to claim 1, characterized in that.

4. A composite material tension roller (4) is provided inside the device main body (1), a composite material secondary deviation correction roller (5) is provided inside the device main body (1), a composite material swing rod assembly (6) is provided inside the device main body (1), and a lower foil material unwinding roller (9) is provided below the inside of the device main body (1). The transfer welding device for a composite current collector according to claim 1, characterized in that.

5. A driving motor (602) is fixedly provided at the outer end of the composite material swing bar assembly (6), and a swing bar body (601) is rotatably provided above the composite material swing bar assembly (6), and the end of the swing bar body (601) is fixedly connected to the end of the output shaft of the driving motor (602). The transfer welding device for a composite current collector according to claim 4, characterized in that.

6. A lower unwinding swing bar assembly (10) is provided inside the device body (1), a lower unwinding tension roller (11) is provided inside the device body (1), a lower unwinding secondary deviation correction roller (12) is provided inside the device body (1), and an upper foil material unwinding roller (13) is provided above the inside of the device body (1). The transfer welding device for a composite current collector according to claim 1, characterized in that.

7. An upper unwinding swing bar assembly (14) is provided above the inside of the device body (1), an upper unwinding secondary deviation correction roller (15) is provided inside the device body (1), a post-welding dust collector (16) is provided inside the device body (1), a welding detector (17) is provided inside the device body (1), and at the same time, a driving roller assembly (18) is provided on the right side inside the device body (1). The transfer welding device for a composite current collector according to claim 1, characterized in that.

8. A coupling motor (1801) is fixedly provided at the end of the driving roller assembly (18), a driving roll (1802) is provided above the driving roller assembly (18), and the driving roll (1802) is fixedly connected to the end of the output shaft of the coupling motor (1801), and the driving roll (1802) is used to flatten the material by a pressure roller to avoid wrinkles and deformation. The transfer welding device for a composite current collector according to claim 7, characterized in that.

9. A labeler (19) is provided above the inside of the device body (1), a flattening roller (20) is provided on the right side inside the device body (1), a winding tension roller (21) is provided on the right side inside the device body (1), and a winding swing roller (22) for stabilizing the tension of the material after welding is provided on the right side inside the device body (1). The transfer welding device for a composite current collector according to claim 1, characterized in that.

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