Lithium ion battery pole piece roll pressing deviation prevention device

Abstract

The utility model discloses a kind of lithium ion battery pole piece roll press anti-deviation devices, it is related to lithium ion battery pole piece processing technical field, including front and rear two anti-deviation mechanisms, and roll press mechanism is set between the opposite surface of two anti-deviation mechanisms.The utility model is driven to symmetric moving plate by positive and negative screw rod, and is stably guided in combination with limiting slide rod, the synchronous convergence or separation of left and right positioning box is realized, so that the spacing of two positioning boxes can be quickly adjusted according to different width battery pole piece, and the groove restriction of battery pole piece is utilized, to ensure that pole piece is always in roll press center line, the smooth contact surface of stainless steel plate inside positioning box is provided, to reduce the edge friction damage of pole piece, while effectively preventing lateral deviation, in combination with the flexible compression design of silica gel sleeve, the pressure is adjusted by lifting block, to enhance slip resistance under the premise of avoiding scratching pole piece surface, to realize the effect of self-adapting width adjustment and accurate anti-deviation, to improve applicability and winding quality.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery electrode processing technology, specifically to a lithium-ion battery electrode rolling anti-deviation device. Background Technology

[0002] After coating and drying, the peel strength between the active material and the current collector foil in lithium-ion battery electrodes is very low. Rolling is necessary to enhance the adhesion between the active material and the foil, preventing peeling during electrolyte immersion and battery use. Simultaneously, electrode rolling compresses the cell volume, increasing the cell's energy density. It also reduces the porosity between the active material, conductive agent, and binder within the electrode, lowering the battery's resistance and improving performance. The complete rolling process involves fixing the coated electrode to the unwinding mechanism, correctly passing the electrode through the gap between the two rollers, connecting it to the winding system, and activating the rolling mode. The motor drives the upper and lower rollers to rotate simultaneously, and the winding mechanism pulls the electrode steadily through the rolling gap, ultimately compressing it to the required density. The existing technology has the following problems:

[0003] Because existing rolling mechanisms lack effective positioning mechanisms when rolling lithium-ion battery electrodes, battery electrodes of different widths are prone to shifting during the rolling process, which affects the winding quality. Utility Model Content

[0004] This invention provides a lithium-ion battery electrode rolling anti-deviation device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A lithium-ion battery electrode rolling anti-deviation device includes two anti-deviation mechanisms, one at the front and one at the back. A rolling mechanism is provided between the opposite faces of the two anti-deviation mechanisms. The rolling mechanism includes two pressure rollers, one upper and one lower. A winding mechanism is provided behind the rear of the rear anti-deviation mechanism. Each of the two anti-deviation mechanisms includes a U-shaped fixing plate. The two U-shaped fixing plates are respectively fixedly installed on the front and rear sides of the rolling mechanism. A positive and negative threaded rod is movably installed on the left side of the right vertical position of the two U-shaped fixing plates. The left end of the positive and negative threaded rod passes through to the left side of the left vertical position of the U-shaped fixing plate and is fixedly installed with a drive rotating rod. The outer walls of the positive and negative threaded rods are respectively provided with threaded walls with opposite threads on the left and right sides. A movable plate is threadedly installed on the outer walls of the two threaded walls. A limit slide rod is fixedly installed between the two vertical positions of the U-shaped fixing plate. The two movable plates are slidably connected to the limit slide rod.

[0007] A further improvement of this utility model is that: a traction roller one is movably installed between the two vertical opposite faces of the two U-shaped fixed plates, the horizontal height of the traction roller one is higher than the height of the gap between the two pressure rollers, a hanging plate is fixedly installed on the front side of the two vertical positions of the U-shaped fixed plates, and a traction roller two is movably installed between the opposite faces of the two hanging plates, the horizontal height of the traction roller two is lower than the horizontal height of the traction roller one.

[0008] A further improvement of this utility model is that: a positioning box is fixedly installed at the bottom of each of the two movable plates on the left and right sides, the bottom of the positioning box is in contact with the top of the traction roller, and a battery electrode plate passage groove is opened on the opposite side of the two positioning boxes on the left and right sides, and a stainless steel plate is fixedly installed on the opposite side of the two battery electrode plate passage grooves.

[0009] A further improvement of this utility model is that: the positioning box is provided with a lifting groove, the bottom of the lifting groove is connected to the battery electrode through the groove, the top of the positioning box is provided with a threaded hole that extends into the inner cavity of the lifting groove, a threaded rod is installed on the inner ring of the threaded hole, a lifting block is movably installed at the bottom end of the threaded rod, the lifting block is slidably connected to the lifting groove, and an adjustment knob is fixedly installed at the top end of the threaded rod.

[0010] A further improvement of this utility model is that: shaft hangers are fixedly installed on both the left and right sides of the bottom end of the lifting block, and connecting movable shafts are movably installed at the bottom ends of the two shaft hangers. A silicone sleeve is fixedly bonded to the outer wall of the connecting movable shaft, and the bottom of the silicone sleeve is in contact with the outer wall of the traction roller.

[0011] A further improvement of this utility model is that: a handwheel is fixedly installed on the left end of the drive rod that extends through the left end of the front U-shaped fixed plate; an active synchronous wheel is fixedly installed on the outer wall of the front drive rod; a driven synchronous wheel is fixedly installed on the left end of the drive rod that extends through the left end of the rear U-shaped fixed plate; and a synchronous belt is connected to the outer walls of the active synchronous wheel and the driven synchronous wheel.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. This utility model provides a lithium-ion battery electrode rolling anti-deviation device. It drives a symmetrical moving plate through positive and negative threaded rods, combined with a limiting slide rod for stable guidance, to achieve synchronous approach or separation of the left and right positioning boxes. This allows for quick adjustment of the distance between the two positioning boxes according to battery electrode widths. The battery electrode passes through a groove to ensure that the electrode is always on the rolling centerline. The stainless steel plate inside the positioning box provides a smooth contact surface, reducing friction damage to the electrode edge and effectively preventing lateral deviation. Combined with the flexible clamping design of the silicone sleeve, the pressure is adjusted by a lifting block to enhance anti-slip performance while avoiding scratching the electrode surface. This achieves adaptive width adjustment and precise anti-deviation, improving applicability and winding quality.

[0014] 2. This utility model provides a lithium-ion battery electrode rolling anti-deviation device. The front drive rod is linked to the rear drive rod through the active synchronous wheel, synchronous belt and driven synchronous wheel. The front and rear anti-deviation mechanisms can be controlled synchronously by a single handwheel operation, ensuring that the positioning width of the electrode is completely consistent before and after entering the rolling mechanism. This significantly improves the adjustment efficiency and avoids the cumbersome operation of adjusting the front and rear positioning separately in traditional devices. At the same time, it eliminates the problem of electrode twisting or uneven winding caused by adjustment errors. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the anti-deviation mechanism of the present invention.

[0017] Figure 3 This is a schematic diagram of the movable plate of the present invention.

[0018] Figure 4 This is a cross-sectional schematic diagram of the positioning box of this utility model.

[0019] Figure 5 This is a schematic diagram of the synchronous belt structure of this utility model.

[0020] In the diagram: 1. Roller pressing mechanism; 11. Pressure roller; 2. Anti-deviation mechanism; 21. U-shaped fixing plate; 22. Traction roller one; 23. Hanging plate; 24. Traction roller two; 25. Positive and negative threaded rods; 26. Drive rotating rod; 261. Active synchronous pulley; 262. Handwheel; 263. Synchronous belt; 264. Driven synchronous pulley; 27. Limiting slide bar; 28. Moving plate; 281. Positioning box; 2811. Battery electrode plate passage groove; 2812. Stainless steel plate; 2813. Lifting groove; 2814. Threaded hole; 2815. Threaded rod; 2816. Lifting block; 2817. Shaft hanging rod; 2818. Connecting movable shaft; 2819. Silicone sleeve; 3. Winding mechanism. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 As shown, this utility model provides a lithium-ion battery electrode rolling anti-deviation device, including two anti-deviation mechanisms 2, one at the front and one at the rear. A rolling mechanism 1 is arranged between the opposite faces of the two anti-deviation mechanisms 2. The rolling mechanism 1 includes two pressure rollers 11, one at the top and one at the bottom. A winding mechanism 3 is arranged on the rear side of the rear anti-deviation mechanism 2. Each anti-deviation mechanism 2 includes a U-shaped fixing plate 21. The two U-shaped fixing plates 21 are respectively fixedly installed on the front and rear sides of the rolling mechanism 1. A positive and negative threaded rod 25 is movably installed on the left side of the right vertical position of the two U-shaped fixing plates 21. The left end of the positive and negative threaded rod 25 passes through to the left side of the left vertical position of the U-shaped fixing plate 21 and is fixedly installed with a drive rotating rod 26. The outer wall of the threaded rod 25 has threaded walls with opposite threads on the left and right sides, and the outer walls of the two threaded walls are threaded with movable plates 28. The two vertical parts of the U-shaped fixed plate 21 are fixedly installed with limit slide rods 27. The two movable plates 28 are slidably connected with the limit slide rods 27. The two vertical parts of the two U-shaped fixed plates 21 are movably installed with traction roller 1 22 between the opposite faces. The horizontal height of traction roller 1 22 is higher than the height of the gap between the two pressure rollers 11. The two vertical parts of the U-shaped fixed plate 21 are fixedly installed with hanging plates 23 on the front side. The two hanging plates 23 are movably installed with traction roller 24 between the opposite faces. The horizontal height of traction roller 24 is lower than that of traction roller 1 22.

[0023] The two pressure rollers 11 included in the rolling mechanism 1 rotate in opposite directions, which can roll the battery electrode sheet. At the same time, the rolled battery electrode sheet can be wound up by the motor driven winding roller included in the winding mechanism 3. When the drive rod 26 rotates, it can drive the positive and negative threaded rods 25 on the inner side of the U-shaped fixed plate 21 to rotate. By means of the opposite threaded walls on the left and right sides of the outer wall of the positive and negative threaded rods 25 and the threaded connection with the moving plate 28, the two moving plates 28 can be synchronously controlled to move closer together by sliding connection with the limit slide rod 27. When the moving plates 28 move, they can synchronously drive the positioning box 281 to move closer together on the traction roller 1 22. When the battery electrode sheet is wound up, it first passes under the traction roller 24, then passes under the top of the traction roller 1 22, and finally passes between the two pressure rollers 11. Since the height of the traction roller 1 22 is higher than that between the traction roller 24 and the two pressure rollers 11, the battery electrode sheet is in a state close to the top of the traction roller 1 22 at this time.

[0024] like Figure 3 , Figure 4As shown, positioning boxes 281 are fixedly installed at the bottom of both left and right movable plates 28. The bottom of the positioning boxes 281 is in contact with the top of the traction roller 22. Battery electrode plate passage grooves 2811 are opened on the opposite sides of the two positioning boxes 281, penetrating through their bottoms. Stainless steel plates 2812 are fixedly installed on the opposite sides of the two battery electrode plate passage grooves 2811. The positioning boxes 281 have lifting grooves 2813. The bottom of the lifting grooves 2813 is vertically connected to the battery electrode plate passage grooves 2811. The top of the positioning boxes 281 has a threaded hole 281 that penetrates into the inner cavity of the lifting grooves 2813. 4. A threaded rod 2815 is installed on the inner ring thread of the threaded hole 2814. A lifting block 2816 is movably installed at the bottom end of the threaded rod 2815. The lifting block 2816 is slidably connected to the lifting groove 2813. An adjustment knob is fixedly installed at the top end of the threaded rod 2815. Shaft hangers 2817 are fixedly installed on both the left and right sides of the bottom end of the lifting block 2816. A connecting movable shaft 2818 is movably installed at the bottom end of the two shaft hangers 2817. A silicone sleeve 2819 is fixedly bonded to the outer wall of the connecting movable shaft 2818. The bottom of the silicone sleeve 2819 is in contact with the outer wall of the traction roller 22.

[0025] When adjusting the moving plate 28, it is only necessary to control the distance between the opposite surfaces of the battery electrode plates passing through the slots 2811 at the bottom of the two positioning boxes 281 to be equal to the battery electrode plates. The stainless steel plate 2812 is used to improve smoothness and prevent wear. The battery electrode plates can be height-limited by the battery electrode plate passing through the slots 2811 at the bottom of the positioning boxes 281. Simultaneously, the proximity of the stainless steel plate 2812 prevents lateral displacement. After adjusting the width of the positioning boxes 281 to pass the battery electrode plates through the slots 2811 and between the top of the traction roller 22, the adjustment can be further achieved by rotating the top of the positioning boxes 281. By turning the knob, the threaded rod 2815 of the inner ring of the threaded hole 2814 can be rotated. The movable connection between the threaded rod 2815 and the lifting block 2816 can control the lifting block 2816 to slide stably downward in the inner cavity of the lifting groove 2813. Finally, the shaft hanger 2817 controls the silicone sleeve 2819 to press the battery electrode between the battery electrode passage groove 2811 and the top of the traction roller 22. At the same time, the rotating connecting movable shaft 2818 does not affect the passage of the battery electrode. With the soft silicone sleeve 2819, the left and right anti-slip performance is improved while avoiding wear on the surface of the battery electrode.

[0026] like Figure 5 As shown, a handwheel 262 is fixedly installed on the left end of the drive rod 26 that extends through the left end of the front U-shaped fixed plate 21. An active synchronous wheel 261 is fixedly installed on the outer wall of the front drive rod 26. A driven synchronous wheel 264 is fixedly installed on the left end of the drive rod 26 that extends through the left end of the rear U-shaped fixed plate 21. A synchronous belt 263 is connected to the outer wall of the active synchronous wheel 261 and the driven synchronous wheel 264.

[0027] Before rolling, the handwheel 262 can be rotated in advance to drive the front drive rod 26 to rotate according to the width of the battery electrode, and at the same time drive the active synchronizing wheel 261 to rotate. By using the transmission connection between the active synchronizing wheel 261 and the rear driven synchronizing wheel 264 through the synchronous belt 263, the rotation of the drive rod 26 included in the rear anti-deviation mechanism 2 can be controlled synchronously, so as to realize the synchronous adjustment control of the front and rear anti-deviation mechanisms 2 and maintain a consistent adjustment width.

[0028] The working principle of this lithium-ion battery electrode rolling anti-deviation device will be explained in detail below.

[0029] like Figure 1-5As shown, the two pressure rollers 11 included in the rolling mechanism 1 rotate in opposite directions, which can roll the battery electrode sheets. At the same time, the rolled battery electrode sheets can be wound up by the motor-driven winding roller included in the winding mechanism 3. Before rolling, the handwheel 262 can be rotated in advance according to the width of the battery electrode sheet to drive the front drive rod 26 to rotate, and at the same time drive the active synchronous pulley 261 to rotate. By using the transmission connection between the active synchronous pulley 261 and the rear driven synchronous pulley 264 through the synchronous belt 263, the rotation of the drive rod 26 included in the rear anti-deviation mechanism 2 can be synchronously controlled, realizing the synchronous adjustment and control of the front and rear anti-deviation mechanisms 2. To maintain a consistent adjustment width, when the drive rod 26 rotates, it can drive the positive and negative threaded rods 25 on the inner side of the U-shaped fixed plate 21 to rotate. By using the opposite threaded walls on the left and right sides of the outer wall of the positive and negative threaded rods 25 to connect with the threads of the moving plate 28, the two moving plates 28 can be synchronously controlled to move closer together by sliding connection with the limit slide rod 27. When the moving plates 28 move, they can synchronously drive the positioning box 281 to move closer together on the traction roller 1 22. When the battery electrode is wound up, it first passes under the traction roller 24, then passes under the top of the traction roller 1 22, and finally passes between the two pressure rollers 11. Since the height of the traction roller 1 22 is higher than that of the traction roller 24 and the two pressure rollers 11, the traction roller 1 22 is higher than that of the traction roller 24 and the two pressure rollers 11. The battery electrode is positioned close to the top of the traction roller 22 between the pressure rollers 11. When adjusting the moving plate 28, it is only necessary to control the distance between the opposite surfaces of the battery electrode passage slots 2811 at the bottom of the two positioning boxes 281 to be equal to the distance between the battery electrode. The stainless steel plate 2812 is used to improve smoothness and prevent wear. The battery electrode can be height-limited by the battery electrode passage slots 2811 at the bottom of the positioning box 281. At the same time, the proximity of the stainless steel plate 2812 prevents lateral displacement. After adjusting the width of the positioning box 281 and passing the battery electrode through the battery electrode passage slots 2811 and the top of the traction roller 22, the battery electrode is positioned between the battery electrode passage slots 2811 and the top of the traction roller 22. Then, by rotating the adjustment knob on the top of the positioning box 281, the threaded rod 2815 of the inner ring of the threaded hole 2814 can be rotated. By using the movable connection between the threaded rod 2815 and the lifting block 2816, the lifting block 2816 can be controlled to slide stably downward in the inner cavity of the lifting groove 2813. Finally, the shaft hanger 2817 controls the silicone sleeve 2819 to press the battery electrode between the battery electrode passage groove 2811 and the top of the traction roller 22. At the same time, the rotating connecting movable shaft 2818 does not affect the passage of the battery electrode. With the soft silicone sleeve 2819, the left and right anti-slip performance is improved while avoiding wear on the surface of the battery electrode.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A lithium-ion battery electrode rolling anti-deviation device, comprising two anti-deviation mechanisms (2) at the front and rear, characterized in that: A roller pressing mechanism (1) is provided between the opposing surfaces of the two anti-deviation mechanisms (2). The roller pressing mechanism (1) includes two upper and lower pressure rollers (11). A winding mechanism (3) is provided on the rear side of the rear anti-deviation mechanism (2). Both anti-deviation mechanisms (2) include a U-shaped fixing plate (21). The two U-shaped fixing plates (21) are respectively fixedly installed on the front and rear sides of the roller pressing mechanism (1). A positive and negative threaded rod is movably installed on the left side of the right vertical position of the two U-shaped fixing plates (21). 25) The left end of the positive and negative threaded rod (25) extends to the left side of the left vertical position of the U-shaped fixed plate (21) and is fixedly installed with a drive rotating rod (26). The left and right sides of the outer wall of the positive and negative threaded rod (25) are respectively provided with threaded walls with opposite threads, and the outer walls of the two threaded walls are threaded with movable plates (28). The two vertical positions of the U-shaped fixed plate (21) are fixedly installed with limit slide rods (27), and the two movable plates (28) are slidably connected with the limit slide rods (27).

2. The lithium-ion battery electrode rolling anti-deviation device according to claim 1, characterized in that: A traction roller (22) is movably installed between the two vertical opposite faces of the two U-shaped fixed plates (21). The horizontal height of the traction roller (22) is higher than the height of the gap between the two pressure rollers (11). A hanging plate (23) is fixedly installed on the front side of the two vertical positions of the U-shaped fixed plates (21). A traction roller (24) is movably installed between the opposite faces of the two hanging plates (23). The horizontal height of the traction roller (24) is lower than the horizontal height of the traction roller (22).

3. The lithium-ion battery electrode rolling anti-deviation device according to claim 2, characterized in that: Positioning boxes (281) are fixedly installed at the bottom of the two movable plates (28) on the left and right. The bottom of the positioning boxes (281) is in contact with the top of the traction roller (22). Battery electrode plate passage grooves (2811) penetrating through the bottom are opened on the opposite sides of the two positioning boxes (2811). Stainless steel plates (2812) are fixedly installed on the opposite sides of the two battery electrode plate passage grooves (2811).

4. The lithium-ion battery electrode rolling anti-displacement device according to claim 3, characterized in that: The positioning box (281) has a lifting groove (2813). The bottom of the lifting groove (2813) is connected to the battery electrode through the groove (2811). The top of the positioning box (281) has a threaded hole (2814) that extends into the cavity of the lifting groove (2813). A threaded rod (2815) is installed on the inner ring of the threaded hole (2814). A lifting block (2816) is movably installed at the bottom end of the threaded rod (2815). The lifting block (2816) is slidably connected to the lifting groove (2813). An adjustment knob is fixedly installed at the top end of the threaded rod (2815).

5. The lithium-ion battery electrode rolling anti-deviation device according to claim 4, characterized in that: The bottom left and right sides of the lifting block (2816) are fixedly installed with shaft rods (2817), and the bottom ends of the two shaft rods (2817) are movably installed with connecting shafts (2818). The outer wall of the connecting shafts (2818) is fixedly bonded with silicone sleeves (2819), and the bottom of the silicone sleeves (2819) is in contact with the outer wall of the traction roller (22).

6. The lithium-ion battery electrode rolling anti-deviation device according to claim 1, characterized in that: A handwheel (262) is fixedly installed on the left end of the drive rod (26) that passes through the left end of the front U-shaped fixing plate (21). An active synchronous wheel (261) is fixedly installed on the outer wall of the front drive rod (26). A driven synchronous wheel (264) is fixedly installed on the left end of the drive rod (26) that passes through the left end of the rear U-shaped fixing plate (21). A synchronous belt (263) is connected to the outer wall of the active synchronous wheel (261) and the driven synchronous wheel (264).

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