Multi-layer current collector welding device

Abstract

The utility model discloses a multilayer current collector welding device, which relates to the technical field of welding and comprises a welding box body, a pole piece is arranged in the welding box body, a wide foil material is arranged below the pole piece, a narrow foil material is arranged above the pole piece, an inlet and an outlet are arranged on two sides of the welding box body, a welding mechanism is arranged in the welding box body, and the welding mechanism is arranged on the welding box body. The welding mechanism comprises an upper frame body and a lower frame body which are movably installed in the welding box body, the upper frame body and the lower frame body are each provided with a first welding gun, the upper frame body is provided with a second welding gun, the upper frame body and the lower frame body are each fixedly provided with a driving rack, a driving gear is rotationally installed between the driving racks, and the upper frame body and the lower frame body are each provided with a second welding gun; and positioning mechanisms are mounted on the upper frame body and the lower frame body. According to the multi-layer current collector welding device, the positioning mechanism and the welding mechanism are matched for use, so that a pole piece, a wide foil material and a narrow foil material can be pressed together, and a material belt is prevented from shifting in the welding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field, concretely is a kind of multilayer current collector welding device. BACKGROUND

[0002] Multilayer current collector is an innovative battery structure, which is composed of multiple layers of metal conductive layers and non-metallic support layers. The design of this structure aims to optimize battery performance, improve current conduction efficiency, and ensure the safety and stability of the battery. Through fine layering and welding process, multilayer current collector realizes the tight connection and electrical conduction between layers, effectively reduces the internal resistance of the battery, and makes the current density distribution more uniform. At the same time, multilayer current collector also has high tensile strength and good corrosion resistance, which can meet the strict requirements of high-performance batteries for current collectors.

[0003] In the existing composite current collector adapter welding, two different width foils are commonly used for welding. The wider foil is welded to one side of the pole piece as the main discharge carrier. The narrower foil divides the weld into two parts, one half is welded to the other side of the pole piece, and the other half is welded together with the wider foil, thus realizing the conduction of current. When using foils of different widths for adapter welding, the positions pressed by the two sides of the welding head are different. One side is two layers of foil, and the other side is two layers of foil plus the middle pole piece. Due to uneven force on the welding position, the material strip often shifts during welding, affecting the welding quality and reducing the yield of good products. SUMMARY

[0004] The utility model aims at providing a kind of multilayer current collector welding device to solve the problem that material strip is prone to shift in prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of multilayer current collector welding device, including welding box body, the pole piece is equipped in the welding box body, the wide foil is equipped below the pole piece, the narrow foil is equipped above the pole piece, the inlet and outlet are set in the welding box body two sides, the welding mechanism is equipped in the welding box body, the welding mechanism includes the upper rack body and lower rack body movably installed in the welding box body, first welding gun is equipped on the upper rack body and lower rack body, second welding gun is equipped on the upper rack body, driving rack is fixedly installed on the upper rack body and lower rack body, driving gear is rotatably installed between the driving rack, positioning mechanism is installed on the upper rack body and lower rack body.

[0006] Preferably, the servo motor is fixedly installed on the driving gear at the output end of the servo motor, and the retaining cage is provided in the welding box body.

[0007] Preferably, the welding box is provided with through holes on both sides, and the output end of the servo motor extends into the welding box through the through holes.

[0008] Preferably, the driving gear is rotatably installed between the driving racks by the servo motor, and the driving gear is engaged with the driving racks, and the first welding gun and the second welding gun are movably installed in the welding box by the upper frame body and the lower frame body.

[0009] Preferably, the positioning mechanism comprises a threaded rod fixedly installed in the upper frame body and the lower frame body, a sliding sleeve fixedly installed on the threaded rod, a reset spring arranged in the sliding sleeve, and an extension rod slidably installed in the sliding sleeve.

[0010] Preferably, the welding holes in the upper pressing plate and the lower pressing plate are respectively aligned with the first welding gun and the second welding gun.

[0011] Preferably, the sliding sleeve is connected to the upper frame body and the lower frame body through the threaded rod, one end of the reset spring is connected to the bottom of the sliding sleeve, and the other end of the reset spring is connected to the extension rod.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1、in the application, after the servo motor is started, the driving gear is rotated, and then the synchronous movement of the driving racks on both sides is realized. The synchronous movement causes the upper frame body and the lower frame body to approach each other, so that the first welding gun and the second welding gun on the upper frame body and the lower frame body approach the material belt. The wide foil and the narrow foil are welded on the pole piece through the first welding gun, and the wide foil and the narrow foil are welded together through the second welding gun.

[0014] 2、in the application, when the material belt is stacked and enters the welding box, the servo motor can be activated. After the servo motor is started, the driving gear is rotated. The rotation of the driving gear promotes the synchronous movement of the driving racks on both sides. The synchronously moving driving racks in turn drive the upper frame body and the lower frame body to approach each other. The approach of the upper frame body and the lower frame body causes the upper pressing plate and the lower pressing plate to approach each other, so as to realize the close pressing of the pole piece, the wide foil and the narrow foil. Then the welding operation can be carried out through the welding holes, and the offset of the material belt is prevented during the welding process. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0017] Figure 3 It is a schematic view of the welding mechanism of the utility model;

[0018] Figure 4 It is a schematic view of the positioning mechanism of the utility model.

[0019] In the drawing, the reference numerals are as follows: 1, pole piece; 2, wide foil material; 3, narrow foil material; 4, welding box body; 5, inlet and outlet; 6, welding mechanism; 601, servo motor; 602, upper frame body; 603, first welding gun; 604, driving rack; 605, driving gear; 606, lower frame body; 607, retainer; 608, second welding gun; 7, positioning mechanism; 701, sliding sleeve; 702, threaded rod; 703, telescopic rod; 704, upper pressing plate; 705, welding hole; 706, lower pressing plate; 707, return spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] As shown in Figure 1 and Figure 2 The utility model provides a kind of multilayer current collector welding device technical scheme, including welding box body 4, pole piece 1 is equipped in welding box body 4, wide foil material 2 is equipped below pole piece 1, narrow foil material 3 is equipped above pole piece 1, inlet and outlet 5 are set in the both sides of welding box body 4, welding mechanism 6 is equipped in welding box body 4, positioning mechanism 7 is installed on upper frame body 602 and lower frame body 606, by the cooperation of positioning mechanism 7 and welding mechanism 6, pole piece 1, wide foil material 2 and narrow foil material 3 can be pressed together, prevent material belt from deviating during welding process.

[0022] As shown in Figure 2 and Figure 3As shown, the welding mechanism 6 comprises an upper frame body 602 and a lower frame body 606 movably mounted in the welding box 4, the upper frame body 602 and the lower frame body 606 are both provided with a first welding gun 603, the upper frame body 602 is provided with a second welding gun 608, the upper frame body 602 and the lower frame body 606 are both fixedly installed with a driving rack 604, the driving racks 604 are rotatably installed with a driving gear 605, the welding box 4 is fixedly installed with a servo motor 601 on both sides, and the output end of the servo motor 601 is fixedly installed on the driving gear 605, the welding box 4 is provided with a retainer 607, the driving rack 604 is slidingly installed in the welding box 4, and the welding box 4 is provided with a through hole on both sides, and the output end of the servo motor 601 extends into the welding box 4 through the through hole.

[0023] Specifically, when the servo motor 601 is started, it will start to rotate and drive the driving gear 605 to rotate. With the rotation of the driving gear 605, it will further promote the synchronous movement of the driving racks 604 on both sides. This synchronous movement causes the upper frame body 602 and the lower frame body 606 to approach each other, thereby enabling the first welding gun 603 and the second welding gun 608 installed on the upper frame body 602 and the lower frame body 606 to approach the material belt. Through the action of the first welding gun 603, the wide foil 2 and the narrow foil 3 can be accurately welded on the specified position of the pole piece 1. At the same time, the second welding gun 608 also performs similar operations to weld the wide foil 2 and the narrow foil 3 together.

[0024] As shown in Figure 2 and Figure 4 , the positioning mechanism 7 comprises a threaded rod 702 fixedly installed in the upper frame body 602 and the lower frame body 606, the threaded rod 702 is fixedly installed with a sliding sleeve 701, the sliding sleeve 701 is provided with a return spring 707, the sliding sleeve 701 is slidingly installed with an extension rod 703, the extension rod 703 on the upper frame body 602 is connected with an upper pressing plate 704, the extension rod 703 on the lower frame body 606 is connected with a lower pressing plate 706, the upper pressing plate 704 and the lower pressing plate 706 are both provided with a welding hole 705, and the welding holes 705 on the upper pressing plate 704 and the lower pressing plate 706 are respectively aligned with the first welding gun 603 and the second welding gun 608 above and below.

[0025] Specifically, when the material belt is stacked and enters the welding box 4, the servo motor 601 can be activated. After the servo motor 601 is started, it will drive the driving gear 605 to rotate. The rotation of the driving gear 605 will promote the synchronous movement of the driving racks 604 on both sides. The synchronously moving driving racks 604 will push the upper frame body 602 and the lower frame body 606 to approach each other, thereby causing the upper pressing plate 704 and the lower pressing plate 706 to approach each other to realize the close pressing of the pole piece 1, the wide foil 2 and the narrow foil 3. Subsequently, welding work is carried out through the welding holes 705 to prevent the material belt from shifting during welding.

[0026] Working principle: when using, first, the pole piece 1, the wide foil 2 and the narrow foil 3 are stacked together to form a material belt, then the stacked material belt is pulled into the welding box 4, after the stacked material belt enters the welding box 4, the servo motor 601 can be started, after the servo motor 601 is started, it will drive the driving gear 605 to rotate, after the driving gear 605 rotates, it will drive the driving rack 604 on both sides to move synchronously, after the driving rack 604 on both sides moves synchronously, it will drive the upper frame body 602 and the lower frame body 606 to move close to each other, when the upper frame body 602 and the lower frame body 606 move close to each other, it will drive the upper pressing plate 704 and the lower pressing plate 706 to move close to each other, so as to press the pole piece 1, the wide foil 2 and the narrow foil 3 tightly together, then welding work can be carried out through the welding hole 705, and the material belt is prevented from deviating during the welding process. And after the pole piece 1, the wide foil 2 and the narrow foil 3 are pressed tightly together, the servo motor 601 can drive the driving gear 605 to continue rotating, so that the first welding gun 603 and the second welding gun 608 on the upper frame body 602 and the lower frame body 606 move close to the material belt, so as to use the first welding gun 603 to weld the wide foil 2 and the narrow foil 3 on the pole piece 1, and use the second welding gun 608 to weld the wide foil 2 and the narrow foil 3 together.

[0027] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and thus can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Accordingly, no matter from which point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and range of equivalency of the elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to which they belong.

Claims

1. A multilayer current collector welding device, comprising a welding box (4), wherein an electrode (1) is disposed inside the welding box (4), a wide foil (2) is disposed below the electrode (1), and a narrow foil (3) is disposed above the electrode (1), characterized in that: The welding box (4) has inlet and outlet (5) on both sides. The welding box (4) is equipped with a welding mechanism (6). The welding mechanism (6) includes an upper frame (602) and a lower frame (606) movably installed in the welding box (4). The upper frame (602) and the lower frame (606) are each equipped with a first welding gun (603). The upper frame (602) is equipped with a second welding gun (608). The upper frame (602) and the lower frame (606) are each fixedly installed with a drive rack (604). The drive rack (604) is rotatably installed with a drive gear (605). The upper frame (602) and the lower frame (606) are equipped with a positioning mechanism (7).

2. The multilayer current collector welding device according to claim 1, characterized in that: Servo motors (601) are fixedly installed on both sides of the welding box (4), and the output end of the servo motor (601) is fixedly installed on the drive gear (605). A retainer (607) is provided inside the welding box (4), and the drive rack (604) is slidably installed inside the welding box (4) by retaining.

3. The multilayer current collector welding device according to claim 2, characterized in that: Both sides of the welding box (4) are provided with through holes, and the output end of the servo motor (601) extends into the welding box (4) through the through holes.

4. The multilayer current collector welding device according to claim 3, characterized in that: The drive gear (605) is rotatably mounted between the drive rack (604) via the servo motor (601), and the drive gear (605) meshes with the drive rack (604). The first welding torch (603) and the second welding torch (608) are movably mounted in the welding box (4) via the upper frame (602) and the lower frame (606).

5. The multilayer current collector welding device according to claim 4, characterized in that: The positioning mechanism (7) includes a threaded rod (702) fixedly installed in the upper frame (602) and the lower frame (606). A sliding sleeve (701) is fixedly installed on the threaded rod (702). A return spring (707) is provided in the sliding sleeve (701). A telescopic rod (703) is slidably installed in the sliding sleeve (701). An upper pressure plate (704) is connected to the telescopic rod (703) on the upper frame (602). A lower pressure plate (706) is connected to the telescopic rod (703) on the lower frame (606). Welding holes (705) are provided on both the upper pressure plate (704) and the lower pressure plate (706).

6. The multilayer current collector welding device according to claim 5, characterized in that: The welding holes (705) on the upper pressure plate (704) and the lower pressure plate (706) are respectively aligned vertically with the corresponding first welding gun (603) and second welding gun (608).

7. A multi-layer current collector welding device according to claim 6, characterized in that: The sliding sleeve (701) is connected to the upper frame (602) and the lower frame (606) via a threaded rod (702). One end of the return spring (707) is connected to the bottom of the sliding sleeve (701), and the other end of the return spring (707) is connected to the telescopic rod (703).

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