Oil pressure double-roller equipment with pole piece positioning structure

Abstract

The utility model relates to the technical field of pole piece rolling, and provides oil pressure double-roller equipment with a pole piece positioning structure, which comprises a bottom support plate, the upper surface of the bottom support plate is symmetrically and fixedly connected with support rods, the inner sides of the two support rods are symmetrically provided with mounting grooves, and the inner walls of the two mounting grooves are fixedly connected with guide rods; by means of the mode that the positioning mechanism, the guide rods and the reset springs are matched, the pole piece machining smoothness is improved, the screw rods are screwed according to the width of the pole piece in the machining process, the screw rods drive the positioning blocks to position the two sides of the pole piece, and therefore the pole piece machining precision is improved. And meanwhile, the movable plate compresses the reset spring while being pressed downwards in the guide rod, the stress on the pole piece is effectively reduced by the reverse acting force generated by the reset spring, the short circuit of the battery pole piece is avoided, and the safety and the practicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece rolling, in particular to an oil pressure roller device with a pole piece positioning structure. Background Art

[0002] With the rise of emerging industries such as electric vehicles and large-scale energy storage systems, demand for lithium-ion batteries is increasing, and performance requirements are also becoming increasingly stringent. Long life is the most fundamental requirement for power and energy storage batteries, and it also poses one of the biggest challenges to the large-scale application of lithium-ion batteries in these fields. Due to the thinning area in the coating process, the thickness difference between the edge and the middle area of ​​the battery cell is increasing. Therefore, the existing roller pressing process cannot compact the edge of the electrode. This results in low strength between the edge coating material and the current collector, causing the battery electrode to shed powder during cycling, thereby affecting the cycle life and safety performance of the battery.

[0003] For example, publication number CN221249916U discloses a pole piece rolling device. It solves existing technical problems, such as the inability to ensure pole piece compaction during rolling. The device comprises a first pressing roller and a second pressing roller arranged horizontally above and below, with a rolling gap formed between the first and second pressing rollers for the pole piece to pass through. The first pressing roller comprises a horizontally arranged first pressing rod, on which a first pressing sleeve is mounted via a first positioning structure. The second pressing roller comprises a second pressing rod parallel to the first pressing rod, on which a second pressing sleeve is mounted via a second positioning structure. The ends of the first pressing sleeve are inclined inward toward the center, and the second pressing sleeve is a straight cylindrical shape with equal diameter. Elastic pressing assemblies are provided at each end of the first pressing sleeve. Advantages of the device include: the elastic pressing assemblies control the distance between the first and second pressing rollers, thereby improving the compaction of the pole piece during rolling. This also ensures normal winding during the rolling process, reducing winding breakage that affects production efficiency and causes waste.

[0004] However, in the existing technology, the traditional pole pieces are not equipped with corresponding positioning mechanisms during the rolling process, and the pole pieces are prone to shaking and offset, resulting in uneven pole pieces and causing battery short circuit problems, thereby limiting the practicality of the device to a certain extent. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the pole piece is not provided with a corresponding positioning mechanism during the rolling process, the pole piece is prone to jitter and deviation, resulting in uneven pole piece and causing battery short circuit.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic roller device with a pole piece positioning structure, including a bottom support plate, the upper surface of the bottom support plate is symmetrically fixedly connected to a support rod, the inner sides of the two support rods are symmetrically provided with mounting grooves, the inner walls of the two mounting grooves are fixedly connected to a guide rod, the surface of the two guide rods is connected to a movable plate, the lower surface of the movable plate is fixedly connected to the inner bottom wall of the mounting groove through a reset spring, the surfaces of the two support rods are provided with a positioning mechanism, the positioning mechanism includes a screw, and one end of the two screws is fixedly connected to a positioning block.

[0007] As a preferred embodiment, the upper surfaces of the two support rods are fixedly connected through a top cover plate, the upper surface of the top cover plate is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is transmission-connected to a hydraulic rod, and one end of the hydraulic rod is fixedly connected to the upper surface of the movable plate.

[0008] As a preferred embodiment, a fixed block is symmetrically fixedly connected to one end of the lower surface of the movable plate near the reset spring, the inner walls of the two fixed blocks are movably connected to the upper pressure roller, and the outer wall of the fixed block at one end is fixedly connected to the motor, and the output end of the motor is transmission-connected to the end of the upper pressure roller.

[0009] As a preferred embodiment, the inner cavity of the bottom support plate is rotatably connected to a bidirectional screw rod, and one end of the bidirectional screw rod is transmission-connected to a turntable.

[0010] As a preferred embodiment, the surface of the bidirectional screw rod is symmetrically threaded with displacement blocks, and the inner sides of the two displacement blocks are fixedly connected with connecting rods.

[0011] As a preferred embodiment, the ends of the two connecting rods away from the displacement block are fixedly connected to protrusions, and the surfaces of the two protrusions are mutually engaged with the fixing rods through grooves.

[0012] As a preferred embodiment, a lower pressing roller is fixedly connected to the surface of the fixing rod.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. The utility model improves the smoothness of electrode processing by arranging a positioning mechanism, a guide rod and a reset spring. During processing, the screw is turned according to the width of the electrode, and the screw drives the positioning block to position the two sides of the electrode to avoid offset and dislocation during electrode processing. At the same time, the movable plate compresses the reset spring while pressing down in the guide rod, and the reverse force generated by the reset spring effectively reduces the force on the electrode, avoiding short circuit of the battery electrode, and improving the safety and practicality of the device.

[0015] 2. The utility model provides a detachable component so that the lower pressure roller can be easily replaced when it is worn. When replacing, the turntable is rotated in the forward direction. The turntable drives the displacement blocks to move toward each other through the rotation of the bidirectional screw rod. The displacement blocks disengage the protrusions from the fixed rods through the connecting rods to quickly disassemble the lower pressure roller, thereby further improving the practicality and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a side view of the overall structure of a hydraulic roller device with a pole piece positioning structure provided by the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of a hydraulic roller device with a pole piece positioning structure provided by the utility model;

[0018] Figure 3 The utility model provides a hydraulic roller device with a pole piece positioning structure Figure 2 A schematic diagram of the structure at center A;

[0019] Figure 4 This is a front view schematic diagram of the overall structure of a hydraulic roller device with a pole piece positioning structure provided by the utility model;

[0020] Legend:

[0021] 1. Bottom support plate; 2. Support rod; 3. Top cover plate; 4. Hydraulic cylinder; 5. Hydraulic rod; 6. Moving plate; 7. Fixed block; 8. Motor; 9. Upper pressure roller; 10. Mounting slot; 11. Guide rod; 12. Return spring; 13. Screw; 14. Positioning block; 15. Bidirectional screw; 16. Turntable; 17. Displacement block; 18. Connecting rod; 19. Bump; 20. Fixed rod; 21. Lower pressure roller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0023] See also Figure 1-4The utility model provides a technical solution: an oil pressure roller device with a pole piece positioning structure, comprising a bottom support plate 1, the upper surface of the bottom support plate 1 is symmetrically fixedly connected with a support rod 2, and the inner sides of the two support rods 2 are symmetrically provided with a mounting groove 10, and the inner walls of the two mounting grooves 10 are fixedly connected with a guide rod 11, and the surface of the two guide rods 11 is connected with a movable plate 6, and the lower surface of the movable plate 6 is fixedly connected to the inner bottom wall of the mounting groove 10 by a return spring 12.

[0024] like Figure 1-4 As shown, the upper surfaces of the two support rods 2 are fixedly connected through the top cover plate 3, and the upper surface of the top cover plate 3 is fixedly connected with a hydraulic cylinder 4, and the output end of the hydraulic cylinder 4 is transmission-connected with a hydraulic rod 5, one end of the hydraulic rod 5 is fixedly connected to the upper surface of the movable plate 6, and the lower surface of the movable plate 6 is symmetrically fixedly connected with a fixed block 7 near one end of the return spring 12, the inner walls of the two fixed blocks 7 are movably connected with an upper pressure roller 9, and the outer wall of the fixed block 7 at one end is fixedly connected with a motor 8, and the output end of the motor 8 is transmission-connected with the end of the upper pressure roller 9, and the output end of the hydraulic cylinder 4 drives the movable plate 6 to move downward through the hydraulic rod 5, and the movable plate 6 slides in the guide rod 11 and presses down the return spring 12, so that the upper pressure roller 9 is against the upper surface of the pole piece. At this time, the output end of the motor 8 drives the upper pressure roller 9 to rotate, thereby rolling the pole piece.

[0025] like Figure 1-4 As shown, the inner cavity of the bottom support plate 1 is rotatably connected to a bidirectional screw rod 15, one end of the bidirectional screw rod 15 is transmission-connected to a turntable 16, and the surface of the bidirectional screw rod 15 is symmetrically threadedly connected to a displacement block 17. The inner sides of the two displacement blocks 17 are fixedly connected to a connecting rod 18, and the ends of the two connecting rods 18 away from the displacement blocks 17 are fixedly connected to a protrusion 19, and the surfaces of the two protrusions 19 are mutually engaged with the fixed rod 20 through grooves, and the surface of the fixed rod 20 is fixedly connected to a lower pressure roller 21. When replacing, the turntable 16 is rotated forward, and the turntable 16 drives the displacement blocks 17 to move toward each other through the rotation of the bidirectional screw rod 15. The displacement block 17 disengages the protrusion 19 from the fixed rod 20 through the connecting rod 18, so as to quickly disassemble the lower pressure roller 21, further improving the practicality and safety of the device.

[0026] Working principle: When in use, first place the pole piece on the surface of the lower pressure roller 21, the output end of the hydraulic cylinder 4 drives the movable plate 6 to move downward through the hydraulic rod 5, and the movable plate 6 slides in the guide rod 11 and presses the reset spring 12 downward, so that the upper pressure roller 9 is against the upper surface of the pole piece. At this time, the output end of the motor 8 drives the upper pressure roller 9 to rotate, and then rolls the pole piece. During processing, the screw 13 is turned according to the width of the pole piece. The screw 13 drives the positioning block 14 to position the two sides of the pole piece to avoid offset and dislocation during pole piece processing. At the same time, the movable plate 6 compresses the reset spring 12 while pressing down in the guide rod 11, and the reset spring 12 is pressed downward by the reset spring 12. The reverse force generated by the spring 12 effectively reduces the force on the electrode, avoiding short circuit of the battery electrode. When the lower pressure roller 21 is worn out after long-term use and needs to be replaced, the turntable 16 is rotated forward. The turntable 16 drives the displacement block 17 to move toward each other through the rotation of the bidirectional screw rod 15. The displacement block 17 disengages the protrusion 19 from the fixed rod 20 through the connecting rod 18 to quickly disassemble the lower pressure roller 21 and reposition the lower pressure roller 21 to be replaced. The turntable 16 is rotated in the reverse direction to make the protrusion 19 engage and fix with the fixed rod 20. The self-locking function of the thread prevents the lower pressure roller 21 from loosening, thereby improving the safety and practicality of the device.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hydraulic roller device with a pole piece positioning structure, comprising a bottom support plate (1), characterized in that: The upper surface of the bottom support plate (1) is symmetrically fixedly connected to a support rod (2), the inner sides of the two support rods (2) are symmetrically provided with a mounting groove (10), the inner walls of the two mounting grooves (10) are fixedly connected to a guide rod (11), the surface of the two guide rods (11) is connected to a movable plate (6), the lower surface of the movable plate (6) is fixedly connected to the inner bottom wall of the mounting groove (10) through a reset spring (12), and the surfaces of the two support rods (2) are provided with a positioning mechanism, the positioning mechanism includes a screw rod (13), and one end of the two screw rods (13) is fixedly connected to a positioning block (14).

2. The hydraulic roller device with a pole piece positioning structure according to claim 1, characterized in that: The upper surfaces of the two support rods (2) are fixedly connected via a top cover plate (3); the upper surface of the top cover plate (3) is fixedly connected to a hydraulic cylinder (4); the output end of the hydraulic cylinder (4) is transmission-connected to a hydraulic rod (5); one end of the hydraulic rod (5) is fixedly connected to the upper surface of a movable plate (6).

3. The hydraulic roller device with a pole piece positioning structure according to claim 1, characterized in that: The lower surface of the movable plate (6) is symmetrically fixedly connected to a fixed block (7) at one end near the return spring (12), the inner walls of the two fixed blocks (7) are movably connected to an upper pressure roller (9), and the outer wall of the fixed block (7) at one end is fixedly connected to a motor (8), and the output end of the motor (8) is transmission-connected to the end of the upper pressure roller (9).

4. The hydraulic roller device with a pole piece positioning structure according to claim 1, characterized in that: The inner cavity of the bottom support plate (1) is rotatably connected to a bidirectional screw rod (15), and one end of the bidirectional screw rod (15) is transmission-connected to a turntable (16).

5. The hydraulic roller device with a pole piece positioning structure according to claim 4, characterized in that: The surface of the bidirectional screw rod (15) is symmetrically threadedly connected with a displacement block (17), and the inner sides of the two displacement blocks (17) are fixedly connected with a connecting rod (18).

6. The hydraulic roller device with a pole piece positioning structure according to claim 5, characterized in that: The ends of the two connecting rods (18) away from the displacement block (17) are fixedly connected with a protrusion (19), and the surfaces of the two protrusions (19) are mutually engaged with the fixing rod (20) through a groove.

7. The hydraulic roller device with a pole piece positioning structure according to claim 6, characterized in that: A lower pressing roller (21) is fixedly connected to the surface of the fixing rod (20).

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