A lithium battery pole piece surface modification coating device

Abstract

The utility model discloses a kind of lithium battery pole piece surface modification coating coating devices, including fixed base, the one side fixed mounting of fixed base top end has clamping assembly, the middle part fixed mounting of fixed base top end is equipped with displacement frame, the top of displacement frame is equipped with height frame, the one side of height frame is equipped with height block, the one side fixed mounting of height block bottom end has coating head, the one side fixed mounting of height block has thickness sensor, the top fixed mounting of height block has scraping component, the other side fixed mounting of fixed base top end has raw material tank, a kind of lithium battery pole piece surface modification coating coating device of the utility model, by setting thickness sensor and scraping component, thickness sensor detects the thickness of lithium battery pole piece after coating in real time, and then lifting cylinder telescopic motion, the depth adjustment of coating on lithium battery pole piece is adjusted by scraping knife scraping, lithium battery pole piece after scraping knife scraping is even in its own thickness, guarantee the normal use of lithium battery pole piece.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery electrode coating technology, specifically to a lithium battery electrode surface modification coating device. Background Technology

[0002] The coating of lithium battery electrodes has a significant impact on the battery's capacity, internal resistance, cycle life, and safety. The coating device applies modified coatings to the lithium battery electrodes. Through surface modification, the overall performance of the battery can be significantly improved. For example, the modified magnesium hydroxide coating has good flexibility and adhesion, allowing for cutting and folding without material loss, reducing the risk of coating peeling off due to vibration and other factors during use. It also has good electrolyte resistance, remaining intact after 72 hours of electrolyte immersion. In addition, surface modification technologies such as surface coating, surface oxidation treatment, electroplating, and surface nanostructure modification can improve the battery's conductivity, interface stability, and cycle life, thereby enhancing battery safety and energy density.

[0003] However, traditional coating equipment has the following drawbacks: Traditional coating equipment simply sprays the modified coating onto the lithium battery electrode, which cannot guarantee the thickness of the modified coating. This can easily lead to uneven thickness on the surface of the lithium battery electrode, affecting the normal use of the lithium battery electrode. Utility Model Content

[0004] The purpose of this invention is to provide a coating device for modifying the surface of lithium battery electrodes, in order to solve the problem mentioned in the background art that the traditional coating device simply sprays the modified coating onto the lithium battery electrode, which cannot guarantee the thickness of the modified coating. This easily leads to uneven thickness on the surface of the lithium battery electrode, affecting the normal use of the lithium battery electrode.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coating device for modifying the surface of a lithium battery electrode, comprising a fixed base, a clamping assembly fixedly installed on one side of the top of the fixed base, a displacement frame fixedly installed in the middle of the top of the fixed base, a height frame at the top of the displacement frame, a height block on one side of the height frame, a coating head fixedly installed on one side of the bottom of the height block, a thickness sensor fixedly installed on one side of the height block, a scraping assembly fixedly installed on the top of the height block, a raw material tank fixedly installed on the other side of the top of the fixed base, a pump body fixedly installed on one side of the raw material tank on the fixed base, the scraping assembly comprising a length plate and a length shell, the top of the length plate being slidably connected to the bottom of the length shell, a movable shell fixedly installed on the top of one side of the length shell, a movable plate slidably connected to one end of the movable shell, a scraping frame fixedly installed on one side of the movable plate, a scraping blade fixedly installed at the bottom of the scraping frame, and a thickness sensor detecting the thickness of the coated lithium battery electrode in real time.

[0006] Preferably, a cylinder base is fixedly installed on the surface of the length shell, a lifting cylinder is fixedly installed at the bottom end of the cylinder base, a limit switch is fixedly installed on the surface of the lifting cylinder, and the movable end of the lifting cylinder and the bottom end of the length plate are both fixedly connected to the side opposite to the height block. The lifting cylinder performs telescopic movement, causing the length shell to slide along the length plate to adjust the scraping height of the scraping knife, and the limit switch monitors the telescopic height of the lifting cylinder in real time.

[0007] Preferably, a first upright plate is fixedly installed at the top of the movable shell, and a second upright plate is fixedly installed at the top of the movable plate. A displacement cylinder is fixedly installed on one side of the first upright plate. The movable end of the displacement cylinder is fixedly connected to the side of the second upright plate opposite to it. The displacement cylinder performs telescopic movement and pushes the second upright plate from one side to adjust the distance between the movable shell and the movable plate, thereby indirectly adjusting the position of the scraping blade.

[0008] Preferably, the clamping assembly includes a clamping shell and a first clamping plate. A sliding groove is formed on one side of the top of the clamping shell. A screw is rotatably connected inside the sliding groove. A sliding block that is slidably connected to the sliding groove is threadedly connected to the middle of the screw. The first clamping plate is fixedly installed on the other side of the top of the clamping shell. A second clamping plate is fixedly installed on the top of the sliding block. A stepper motor that drives the screw to rotate is fixedly installed on the surface of the clamping shell. The bottom end of the clamping shell is fixedly connected to a fixed base. When the stepper motor is powered on, it starts and drives the screw to rotate. The threads on the surface of the screw match the threads on the inner wall of the sliding block. The sliding block is limited by the sliding groove that matches its shape and size, so the sliding block slides along the screw to adjust the distance between the first clamping plate and the second clamping plate. The two clamping plates clamp and fix the lithium battery electrode from both sides.

[0009] Preferably, a first lead screw is rotatably connected inside the displacement frame, and a displacement block that is slidably connected to the displacement frame is threadedly connected to the middle of the first lead screw. The top end of the displacement block is fixedly connected to the bottom end of the height frame. A first servo motor that drives the first lead screw to rotate is fixedly installed on the surface of the displacement frame. When the first servo motor is powered on, it starts and drives the first lead screw to rotate. The thread on the surface of the first lead screw matches the thread on the inner wall of the displacement block. The displacement block is limited by the displacement frame, which matches its shape and size. Therefore, the displacement block slides along the first lead screw to adjust the position of the coating head.

[0010] Preferably, a second lead screw is rotatably connected to the top of the inner wall of the height frame. The middle part of the second lead screw is threadedly connected to the height block, and the height frame and the height block are slidably connected. A second servo motor that drives the second lead screw to rotate is fixedly installed on one side of the top of the height frame, and a warning light is fixedly installed on the other side of the top of the height frame. When the second servo motor is powered on, it starts and drives the second lead screw to rotate. The thread on the surface of the second lead screw matches the thread on the inner wall of the height block. The height block is limited by the height frame, which matches its shape and size. Therefore, the height block slides along the second lead screw to adjust the height of the coating head.

[0011] Preferably, the pump body has a fixed connection between its inlet and an extraction pipe extending into the raw material tank, and a fixed connection between its outlet and a delivery hose extending into the coating head. When the pump body is powered on, it starts to extract the modified coating material from the raw material tank through the extraction pipe. The extracted material is then delivered to the coating head through the delivery hose, and the coating head sprays the modified coating material onto the lithium battery electrode.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by setting a thickness sensor and a scraping component, the thickness sensor detects the thickness of the coated lithium battery electrode in real time, and then the lifting cylinder performs telescopic movement to adjust the depth of the coating scraped by the scraping knife on the lithium battery electrode. The lithium battery electrode itself has a uniform thickness after being scraped by the scraping knife, ensuring the normal use of the lithium battery electrode. Attached Figure Description

[0013] Figure 1 This is a side view of the present invention; Figure 2 This is a connection diagram of the displacement frame and displacement block of this utility model; Figure 3 This is a perspective view of the scraping component of this utility model; Figure 4 This is a cross-sectional view of the clamping assembly of this utility model.

[0014] In the diagram: 1. Fixed base; 2. Raw material tank; 3. Extraction pipe; 4. Pump body; 5. Delivery hose; 6. Height frame; 7. Coating head; 8. Thickness sensor; 9. Scraping assembly; 901. Length plate; 902. Length shell; 903. Cylinder base; 904. Lifting cylinder; 905. Limit switch; 906. Movable shell; 907. Movable plate; 908. Scraping frame; 909. Scraping blade; 910. ... 911. First upright plate; 912. Second upright plate; 10. Clamping assembly; 101. Clamping shell; 102. First clamping plate; 103. Screw; 104. Sliding block; 105. Second clamping plate; 106. Stepper motor; 107. Sliding groove; 11. Displacement frame; 12. First lead screw; 13. Displacement block; 14. Second lead screw; 15. Height block; 16. Second servo motor; 17. Warning light. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figure 1-4 This utility model provides a coating device for modifying the surface of lithium battery electrode sheets, including a fixed base 1, a clamping assembly 10 fixedly installed on one side of the top of the fixed base 1, a displacement frame 11 fixedly installed in the middle of the top of the fixed base 1, a height frame 6 provided at the top of the displacement frame 11, a height block 15 provided on one side of the height frame 6, a coating head 7 fixedly installed on one side of the bottom of the height block 15, a thickness sensor 8 fixedly installed on one side of the height block 15, a scraping assembly 9 fixedly installed at the top of the height block 15, and a raw material... The material tank 2 has a pump body 4 fixedly installed on the fixed base 1, located on one side of the material tank 2. The scraping assembly 9 includes a length plate 901 and a length shell 902. The top end of the length plate 901 is slidably connected to the bottom end of the length shell 902. A movable shell 906 is fixedly installed on the top end of one side of the length shell 902. A movable plate 907 is slidably connected to one end of the movable shell 906. A scraping frame 908 is fixedly installed on one side of the movable plate 907. A scraping blade 909 is fixedly installed at the bottom end of the scraping frame 908. The thickness sensor 8 detects the thickness of the coated lithium battery electrode sheet in real time.

[0017] A cylinder base 903 is fixedly mounted on the surface of the length shell 902. A lifting cylinder 904 is fixedly mounted on the bottom end of the cylinder base 903. A limit switch 905 is fixedly mounted on the surface of the lifting cylinder 904. The movable end of the lifting cylinder 904 and the bottom end of the length plate 901 are both fixedly connected to the side opposite to the height block 15. The lifting cylinder 904 performs telescopic movement, causing the length shell 902 to slide along the length plate 901, thereby adjusting the scraping height of the scraping blade 909. The limit switch 905 monitors the telescopic height of the lifting cylinder 904 in real time.

[0018] A first vertical plate 910 is fixedly installed on the top of the movable shell 906, and a second vertical plate 912 is fixedly installed on the top of the movable plate 907. A displacement cylinder 911 is fixedly installed on one side of the first vertical plate 910. The movable end of the displacement cylinder 911 is fixedly connected to the side of the second vertical plate 912 facing each other. The displacement cylinder 911 performs telescopic movement and pushes the second vertical plate 912 from one side to adjust the distance between the movable shell 906 and the movable plate 907, thereby indirectly adjusting the position of the scraping blade 909.

[0019] The clamping assembly 10 includes a clamping shell 101 and a first clamping plate 102. A sliding groove 107 is formed on one side of the top of the clamping shell 101. A screw 103 is rotatably connected inside the sliding groove 107. A sliding block 104, which is slidably connected to the sliding groove 107, is threadedly connected to the middle of the screw 103. The first clamping plate 102 is fixedly installed on the other side of the top of the clamping shell 101. A second clamping plate 105 is fixedly installed on the top of the sliding block 104. A stepper motor 1, which drives the screw 103 to rotate, is fixedly installed on the surface of the clamping shell 101. 06. The bottom end of the clamping shell 101 is fixedly connected to the fixed base 1. After the stepper motor 106 is powered on, it starts and drives the screw 103 to rotate. The thread on the surface of the screw 103 matches the thread on the inner wall of the sliding block 104. The sliding block 104 is limited by the sliding groove 107 that matches its shape and size. Therefore, the sliding block 104 slides along the screw 103 to adjust the distance between the first clamping plate 102 and the second clamping plate 105. The two clamping plates clamp and fix the lithium battery electrode from both sides.

[0020] The displacement frame 11 is internally rotatably connected to a first lead screw 12. The middle part of the first lead screw 12 is threadedly connected to a displacement block 13 that is slidably connected to the displacement frame 11. The top end of the displacement block 13 is fixedly connected to the bottom end of the height frame 6. A first servo motor that drives the first lead screw 12 to rotate is fixedly installed on the surface of the displacement frame 11. After the first servo motor is powered on, it starts and drives the first lead screw 12 to rotate. The thread on the surface of the first lead screw 12 matches the thread on the inner wall of the displacement block 13. The displacement block 13 is limited by the displacement frame 11, which matches its shape and size. Therefore, the displacement block 13 slides along the first lead screw 12 to adjust the position of the coating head 7.

[0021] A second lead screw 14 is rotatably connected to the top of the inner wall of the height frame 6. The middle part of the second lead screw 14 is threadedly connected to the height block 15, and the height frame 6 and the height block 15 are slidably connected. A second servo motor 16 that drives the second lead screw 14 to rotate is fixedly installed on one side of the top of the height frame 6, and a warning light 17 is fixedly installed on the other side of the top of the height frame 6. When the second servo motor 16 is powered on, it starts and drives the second lead screw 14 to rotate. The thread on the surface of the second lead screw 14 matches the thread on the inner wall of the height block 15. The height block 15 is limited by the height frame 6, which matches its shape and size. Therefore, the height block 15 slides along the second lead screw 14 to adjust the height of the coating head 7.

[0022] The pump body 4 has a fixed connection to the inlet of a pump that extends into the raw material tank 2 and a fixed connection to the outlet of the pump body 4 that extends into the coating head 7. When the pump body 4 is powered on, it starts to draw modified coating material from the raw material tank 2 through the pumping pipe 3. The drawn material is then transported to the coating head 7 through the conveying hose 5. The coating head 7 sprays the modified coating material onto the lithium battery electrode.

[0023] In this embodiment, during use: The first servo motor starts after being powered on, driving the first lead screw 12 to rotate. The thread on the surface of the first lead screw 12 matches the thread on the inner wall of the displacement block 13. The displacement block 13 is limited by the displacement frame 11, which matches its shape and size. Therefore, the displacement block 13 slides along the first lead screw 12, adjusting the position of the coating head 7. The second servo motor 16 starts after being powered on, driving the second lead screw 14 to rotate. The thread on the surface of the second lead screw 14 matches the thread on the inner wall of the displacement block 13. The threads on the inner wall of the height block 15 are matched, and the height block 15 is limited by the height bracket 6, which matches its shape and size. Therefore, the height block 15 slides along the second lead screw 14 to adjust the height of the coating head 7. After the stepper motor 106 is powered on, it starts and drives the screw 103 to rotate. The threads on the surface of the screw 103 match the threads on the inner wall of the sliding block 104. The sliding block 104 is limited by the sliding groove 107, which matches its shape and size. Therefore, the sliding block 104 slides along the screw 103. The distance between the first clamping plate 102 and the second clamping plate 105 is adjusted by sliding, and the two clamping plates clamp and fix the lithium battery electrode sheet from both sides. After the pump body 4 is powered on, it starts and draws the modified coating material from the raw material tank 2 through the extraction pipe 3. The extracted material is transported to the coating head 7 through the delivery hose 5. The coating head 7 sprays the modified coating material onto the lithium battery electrode sheet. The thickness sensor 8 detects the thickness of the coated lithium battery electrode sheet in real time. The moving end of the lifting cylinder 904 is connected to the bottom end of the length plate 901. All are fixedly connected to the side directly opposite the height block 15. The lifting cylinder 904 extends and retracts, causing the length shell 902 to slide along the length plate 901, adjusting the scraping height of the scraping blade 909. The limit switch 905 monitors the extension and retraction height of the lifting cylinder 904 in real time. The displacement cylinder 911 extends and retracts, pushing the second vertical plate 912 from one side, adjusting the distance between the movable shell 906 and the movable plate 907, indirectly adjusting the position of the scraping blade 909.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coating device for modifying the surface of lithium battery electrode sheets, comprising a fixed base (1), characterized in that: A clamping assembly (10) is fixedly installed on one side of the top of the fixed base (1). A displacement frame (11) is fixedly installed in the middle of the top of the fixed base (1). A height frame (6) is provided at the top of the displacement frame (11). A height block (15) is provided on one side of the height frame (6). A coating head (7) is fixedly installed on one side of the bottom of the height block (15). A thickness sensor (8) is fixedly installed on one side of the height block (15). A scraping assembly (9) is fixedly installed at the top of the height block (15). A raw material tank (2) is fixedly installed on the other side of the top of the fixed base (1). The fixed base (1) is fixedly installed with a pump body (4) located on one side of the raw material tank (2). The scraping assembly (9) includes a length plate (901) and a length shell (902). The top end of the length plate (901) is slidably connected to the bottom end of the length shell (902). A movable shell (906) is fixedly installed on the top end of one side of the length shell (902). A movable plate (907) is slidably connected to one end of the movable shell (906). A scraping frame (908) is fixedly installed on one side of the movable plate (907). A scraping blade (909) is fixedly installed at the bottom end of the scraping frame (908).

2. The lithium battery electrode surface modification coating application device according to claim 1, characterized in that: A cylinder base (903) is fixedly installed on the surface of the length shell (902). A lifting cylinder (904) is fixedly installed at the bottom end of the cylinder base (903). A limit switch (905) is fixedly installed on the surface of the lifting cylinder (904). The movable end of the lifting cylinder (904) and the bottom end of the length plate (901) are both fixedly connected to the side opposite to the height block (15).

3. The lithium battery electrode surface modification coating application device according to claim 1, characterized in that: The top of the movable shell (906) is fixedly installed with a first upright plate (910), the top of the movable plate (907) is fixedly installed with a second upright plate (912), a displacement cylinder (911) is fixedly installed on one side of the first upright plate (910), and the movable end of the displacement cylinder (911) is fixedly connected to the side of the second upright plate (912) facing each other.

4. The lithium battery electrode surface modification coating application device according to claim 1, characterized in that: The clamping assembly (10) includes a clamping shell (101) and a first clamping plate (102). A sliding groove (107) is provided on one side of the top of the clamping shell (101). A screw (103) is rotatably connected inside the sliding groove (107). A sliding block (104) that is slidably connected to the sliding groove (107) is threaded in the middle of the screw (103). The first clamping plate (102) is fixedly installed on the other side of the top of the clamping shell (101). A second clamping plate (105) is fixedly installed on the top of the sliding block (104). A stepper motor (106) that drives the screw (103) to rotate is fixedly installed on the surface of the clamping shell (101). The bottom end of the clamping shell (101) is fixedly connected to the fixed base (1).

5. The lithium battery electrode surface modification coating application device according to claim 1, characterized in that: The displacement frame (11) is internally rotatably connected to a first lead screw (12), and the middle part of the first lead screw (12) is threadedly connected to a displacement block (13) that is slidably connected to the displacement frame (11). The top end of the displacement block (13) is fixedly connected to the bottom end of the height frame (6), and a first servo motor that drives the first lead screw (12) to rotate is fixedly installed on the surface of the displacement frame (11).

6. The lithium battery electrode surface modification coating application device according to claim 1, characterized in that: The top of the inner wall of the height frame (6) is rotatably connected to a second lead screw (14). The middle part of the second lead screw (14) is threadedly connected to the height block (15), and the height frame (6) is slidably connected to the height block (15). A second servo motor (16) that drives the second lead screw (14) to rotate is fixedly installed on one side of the top of the height frame (6), and a warning light (17) is fixedly installed on the other side of the top of the height frame (6).

7. The lithium battery electrode surface modification coating application device according to claim 1, characterized in that: The pump body (4) has a fixed connection to an extraction pipe (3) extending into the raw material tank (2) at its inlet, and a fixed connection to a delivery hose (5) extending into the coating head (7) at its outlet.

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