Multifunctional lithium battery diaphragm coating machine

Abstract

The utility model discloses a multi-functional lithium battery diaphragm coater, relates to diaphragm coating technical field, including liquid level detection structure, liquid level detection structure is provided on the storage tank, and includes floating block, fixed box and moving block, fixed box is connected to the side of storage tank, moving block is connected to fixed box inner side in a sliding manner, the floating block is connected to the fixed box, the moving block is connected to the fixed box inner side in a sliding manner, and the floating block is connected to the fixed box inner side in a sliding manner. A light touch switch is connected into the fixed box in a matched and lifting mode, a vertical limiting rod is connected into the material storage tank, the limiting rod is sleeved with the floating block, the opposite poles of the adjacent faces of the movable block and the limiting rod attract each other, an alarm lamp is arranged on the outer side of the material storage tank, and the alarm lamp is electrically connected with the light touch switch. The liquid level detection structure is arranged in the material storage tank, when the liquid level in the material storage tank is lowered, the floating block moves downwards, and the movable block moves downwards to be in contact with the light touch switch, the light touch switch is touched and controls the alarm lamp to be turned on, and the alarm lamp gives an alarm to remind personnel to feed materials.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm coating, in particular to a multifunctional lithium battery diaphragm coater. Background Technique

[0002] The function of lithium battery diaphragm coating is to significantly improve the safety, performance and manufacturing yield of the battery. By enhancing the mechanical strength, thermal stability and ionic conductivity of the diaphragm, it ensures the stable operation of the battery under complex working conditions such as high temperature, high energy density and fast charge and discharge. At the same time, it optimizes the manufacturing process of the battery core. When coating the battery diaphragm, the uniformity of the coating is related to the quality of the final product, and a high-precision control system is required in this regard.

[0003] Chinese Patent with the authorization announcement number CN213315756U discloses a lithium battery diaphragm ceramic coater. The utility model can spray the diaphragm twice at the same time, and can quickly coat a double-layer coating on the diaphragm, improving the coating efficiency of multiple layers of coatings. Through the leveling mechanism set in this scheme, the coating layer after single coating can be leveled, so that the coating is evenly coated on the diaphragm surface. By setting the electric push rod, the position height of the coating nozzle can be adjusted, so that the device can adapt to the coating of diaphragms with different thicknesses, improving the applicability. By setting the stirring rod, the coating can be stirred to avoid the coating from coagulating.

[0004] However, the coating tank in the above scheme lacks the function of automatically alarming low liquid level to remind personnel to add materials. When the material in the storage barrel is less, it cannot timely remind personnel to add materials, which is likely to affect the coating work due to untimely adding of materials into the storage barrel and cannot meet the use requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multifunctional lithium battery diaphragm coater to solve the technical problem that the coating tank in the prior art lacks automatic low liquid level alarm.

[0006] The technical problem to be solved by the utility model can be realized through the following technical solutions:

[0007] A multifunctional lithium battery diaphragm coater includes a bottom plate, a support frame and a coating nozzle. A conveying component for conveying the film body is arranged at the top of the bottom plate. The support frame is arranged at the top of the bottom plate. A storage tank is connected to the top of the support frame. The storage tank is communicated with the coating nozzle through a hose. It further includes:

[0008] Liquid level detection structure, the liquid level detection structure is arranged on the storage tank, and includes a floating block, a fixed box and a moving block. The fixed box is connected to the side of the storage tank. The moving block is slidably connected to the inside of the fixed box. A tactile switch is connected in the fixed box in a lifting and matching manner. The moving block is vertically aligned with the tactile switch. A vertical limiting rod is connected inside the storage tank. The floating block is sleeved outside the limiting rod. Both the moving block and the limiting rod have magnetism, and their adjacent surfaces attract each other with opposite polarities. An alarm lamp is arranged outside the storage tank. The alarm lamp is electrically connected to the tactile switch;

[0009] Missing coating detection component, the missing coating detection component is arranged on the upper and lower sides of the film body in a matching manner, and is fixed behind the coating nozzle along the transmission direction of the transmission component.

[0010] As a further solution of the present invention: a lifting structure is connected to the lower surface of the top plate of the support frame. The output end of the lifting structure is connected with a bearing plate. The coating nozzle is fixedly connected to the bearing plate.

[0011] As a further solution of the present invention: a scale is connected to the side of the fixed box. A strip-shaped through hole is opened on the side of the fixed box. A pointer is connected to the bottom of the moving block. The pointer passes through the strip-shaped through hole and points to the scale line of the scale.

[0012] As a further solution of the present invention: an adjusting rod is threadedly connected to the bottom of the fixed box. The top of the adjusting rod is rotatably connected to the bottom of the tactile switch. The tactile switch is slidably connected to the inner wall of the fixed box.

[0013] As a further solution of the present invention: the missing coating detection component includes an infrared emission device, an infrared reception device and a controller. The infrared emission device is connected to the bearing plate. The infrared reception device is arranged on the top of the bottom plate and is aligned with the infrared emission device in position. Both the infrared emission device and the infrared reception device are electrically connected to the controller. The controller is electrically connected to the alarm lamp.

[0014] As a further solution of the present invention: a pump body is connected to the side of the storage tank in a penetrating manner. The pump body is electrically connected to the controller.

[0015] The beneficial effects of the present invention:

[0016] 1. By arranging a liquid level detection structure inside the storage tank in the present invention, when the liquid level inside the storage tank decreases, under the action of its own gravity, the floating block moves downward, and the moving block magnetically attracted to it also moves accordingly. When the moving block moves down to contact the tactile switch, the tactile switch is triggered and controls the alarm lamp to turn on. The alarm lamp gives an alarm to remind the personnel to add materials.

[0017] 2. After the coating of the present utility model is completed, the coated film body moves between the components for detecting missed coating. The infrared receiving device receives the infrared rays emitted by the infrared transmitting device, and the actual detected value is compared with the reference value set by the controller. When there is a missed coating on the diaphragm, the intensity of the received infrared light becomes stronger. When the actual value exceeds the reference value, the controller controls the alarm lamp to emit an alarm signal, which can avoid large-area missed coating and timely remind the staff to handle it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the external structure of the storage tank of the present utility model;

[0021] Figure 3 is a cross-sectional view of the internal structure of the storage pipe of the present utility model.

[0022] In the figure: 1, bottom plate; 2, conveying assembly; 3, film body; 4, support frame; 5, storage tank; 6, lifting structure; 7, bearing plate; 8, coating nozzle; 9, infrared transmitting device; 10, infrared receiving device; 11, controller; 12, pump body; 13, fixed box; 14, moving block; 15, pointer; 16, scale; 17, floating block; 18, limiting rod; 19, touch switch; 20, adjusting rod; 21, alarm lamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figures 1 - 3 shown, a multifunctional lithium battery diaphragm coater includes a bottom plate 1, a support frame 4 and a coating nozzle 8. A conveying assembly 2 for conveying the film body 3 is fixedly arranged on the top of the bottom plate 1. The conveying assembly 2 includes two conveying rollers for cooperating to convey the film body 3. The support frame 4 is fixedly arranged on the top of the bottom plate 1. A storage tank 5 is fixedly connected to the top of the support frame 4. The storage tank 5 and the coating nozzle 8 are connected through a hose. The storage tank 5 is used to supply materials to the coating nozzle 8. The coater further includes a liquid level detection structure and a missed coating detection component;

[0025] The liquid level detection structure is cooperatively arranged on the storage tank 5 and includes a floating block 17, a fixed box 13 and a moving block 14. The fixed box 13 is fixedly connected to the side of the storage tank 5. The moving block 14 is slidably connected to the inner side of the fixed box 13. A touch switch 19 is connected in a lifting and cooperating manner inside the fixed box 13. The moving block 14 is vertically aligned with the touch switch 19. The moving block 14 is used to touch the touch switch 19. A vertical limiting rod 18 is connected inside the storage tank 5. The floating block 17 is sleeved outside the limiting rod 18. Both the moving block 14 and the limiting rod 18 have magnetism, and their adjacent surfaces attract each other with opposite polarities, so that while the floating block 17 slides, it can drive the moving block 14 to slide along the inner wall of the fixed box 13. An alarm lamp 21 is fixedly arranged outside the storage tank 5. The alarm lamp 21 is electrically connected to the touch switch 19. The touch switch 19 can control the alarm lamp 21 to emit blue light;

[0026] The missing coating detection assembly is cooperatively arranged on the upper and lower sides of the film body 3 and is fixed behind the coating nozzle 8 along the transmission direction of the transmission assembly 2.

[0027] In some specific embodiments, such as Figure 1 As shown, in order to facilitate the adaptation to film bodies 3 of different thicknesses, a lifting structure 6 is fixedly connected to the lower surface of the top plate of the support frame 4. The output end of the lifting structure 6 is fixedly connected to a bearing plate 7. The coating nozzle 8 is fixedly installed on the bearing plate 7. Adjusting the lifting structure 6 can drive the coating nozzle 8 to approach or move away from the film body 3.

[0028] In some specific embodiments, such as Figure 2 As shown, in order to facilitate understanding of the liquid level inside the storage tank 5, a scale 16 is fixedly connected to the side of the fixed box 13. A strip-shaped through hole is formed through the side of the fixed box 13. A pointer 15 is fixedly connected to the bottom of the moving block 14. The pointer 15 passes through the strip-shaped through hole and points to the scale line of the scale 16.

[0029] In some specific embodiments, such as Figure 3 As shown, in order to facilitate adjusting the liquid level alarm height, an adjusting rod 20 is threadedly connected to the bottom of the fixed box 13. The adjusting rod 20 is a threaded rod. The top of the adjusting rod 20 is rotatably connected to the touch switch 19. The touch switch 19 is slidably connected to the inner wall of the fixed box 13. Rotating the adjusting rod 20 can drive the touch switch 19 to slide up and down along the inner wall of the fixed box 13.

[0030] In some specific embodiments, such as Figure 1As shown in the figure, to avoid missed coating, the missed coating detection component includes an infrared emission device 9, an infrared reception device 10 and a controller 11. The infrared emission device 9 is fixedly connected to the carrier plate 7. The infrared reception device 10 is arranged on the top of the bottom plate 1 through a support rod and is aligned with the infrared emission device 9. The infrared emission device 9 emits infrared rays to the infrared reception device 10. Both the infrared emission device 9 and the infrared reception device 10 are electrically connected to the controller 11, and the controller 11 is electrically connected to the alarm lamp 21. The controller 11 is used to monitor the infrared intensity in real time, that is, to detect whether there is a missed coating on the diaphragm. When there is a missed coating, the controller 11 can control the alarm lamp 21 to emit red light. And when the liquid level detection structure fails, the staff can make timely operations according to the alarm of the missed coating detection component, avoiding a large-area missed coating effect on the film body 3 due to the lack of raw materials in the storage tank 5.

[0031] In some specific implementation schemes, such as Figure 3 As shown in the figure, to facilitate controlling the pump body 12 to replenish the storage tank 5 with materials, the storage tank 5 is connected to the pump body 12 through a through hole on the side. One end of the pump body 12 away from the storage tank 5 is connected to the feeding structure. The pump body 12 is electrically connected to the controller 11, and the controller 11 can control the pump body 12 to replenish the storage tank 5 with materials.

[0032] To facilitate the understanding of this solution by those skilled in the art, the working principle of this solution will be briefly described below in combination with a specific application scenario:

[0033] During actual use, when the liquid level in the storage tank 5 decreases, under the action of its own gravity, the floating block 17 moves downward, and the moving block 14 magnetically attracted to it also moves accordingly. When the moving block 14 moves down to contact the touch switch 19, the touch switch 19 is triggered and controls the alarm lamp 21 to turn on. The alarm lamp 21 emits blue light to alarm and remind the staff to add materials. As the liquid level of the storage tank 5 rises during feeding, the floating block 17 will float upward, and the floating block 17 drives the moving block 14 and the pointer 15 to move upward synchronously. At this time, the staff can conveniently control the material level during feeding by observing the scale 16 pointed by the pointer 15. And when it is necessary to adjust the alarm height inside the storage tank 5 according to actual needs, turn the adjusting rod 20 in the corresponding direction. Since the adjusting rod 20 is threadedly connected to the fixed box 13, the adjusting rod 20 drives the touch switch 19 to slide up and down along the inner wall of the fixed box 13, so as to facilitate adjusting the height of the touch switch 19 according to actual needs and achieve the purpose of adjusting the liquid level alarm height.

[0034] After coating is completed, the conveying component 2 drives the film body 3 to move backward. The coated film body 3 moves between the missing coating detection components. The infrared receiving device 10 receives the infrared rays emitted by the infrared transmitting device 9, and the intensity of the received infrared light is detected in real time. The detected actual value is compared with the reference value set by the controller 11. When the diaphragm is missing coating, since the thickness is reduced, the intensity of the received infrared light becomes stronger. When the actual value exceeds the reference value, the data is transmitted to the controller 11. The controller 11 controls the alarm lamp 21 to give a red alarm, which can realize the detection of the coating effect of the diaphragm and avoid large-area missing coating of the diaphragm. When the liquid level detection structure is damaged or fails, the missing coating detection component detects that there is no coating on the diaphragm, and can also timely remind the staff to handle it.

[0035] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A multifunctional lithium battery diaphragm coating machine, comprising a bottom plate (1), a support frame (4) and a coating nozzle (8), wherein a conveying assembly (2) for conveying a film body (3) is arranged on the top of the bottom plate (1), the support frame (4) is arranged on the top of the bottom plate (1), a material storage tank (5) is connected to the top of the support frame (4), and the material storage tank (5) and the coating nozzle (8) are connected through a hose, characterized in that: Also includes: A liquid level detection structure, the liquid level detection structure is arranged on a material storage tank (5), and comprises a floating block (17), a fixed box (13) and a moving block (14), the fixed box (13) is connected to the side of the material storage tank (5), the moving block (14) is slidably connected to the inner side of the fixed box (13), a touch switch (19) is connected in a lifting manner in the fixed box (13), a limit rod (18) is connected inside the material storage tank (5), the floating block (17) is sleeved on the outer side of the limit rod (18), adjacent surfaces of the moving block (14) and the limit rod (18) are anisotropically attracted to each other, and an alarm light (21) electrically connected to the touch switch (19) is arranged on the outer side of the material storage tank (5); A coating leakage detection component is arranged on the upper and lower sides of the film body (3) and is fixed behind the coating nozzle (8) along the transmission direction of the conveying component (2).

2. A multifunctional lithium battery separator coating machine according to claim 1, characterized in that: The lower surface of the top plate of the support frame (4) is connected to a lifting structure (6), the output end of the lifting structure (6) is connected to a carrying plate (7), and the coating nozzle (8) is fixedly connected to the carrying plate (7).

3. A multifunctional lithium battery separator coating machine according to claim 1, characterized in that: A scale (16) is connected to the side of the fixed box (13), a bar-shaped through hole is opened on the side of the fixed box (13), and a pointer (15) is connected to the bottom of the moving block (14), and the pointer (15) passes through the bar-shaped through hole and points to the scale line of the scale (16).

4. A multifunctional lithium battery separator coating machine according to claim 1, characterized in that: The bottom of the fixed box (13) is threadedly connected with an adjusting rod (20), the top of the adjusting rod (20) is rotatably connected to the bottom of the light touch switch (19), and the light touch switch (19) is slidably connected to the inner wall of the fixed box (13).

5. The multifunctional lithium battery separator coating machine according to claim 1, characterized in that: The coating leakage detection component comprises an infrared emitting device (9), an infrared receiving device (10) and a controller (11); the infrared emitting device (9) is connected to a carrier plate (7); the infrared receiving device (10) is arranged on the top of a bottom plate (1) and aligned with the infrared emitting device (9); the infrared emitting device (9) and the infrared receiving device (10) are both electrically connected to the controller (11); and the controller (11) is electrically connected to an alarm light (21).

6. A multifunctional lithium battery separator coating machine according to claim 5, characterized in that: A pump body (12) is connected through the side of the material storage tank (5), and the pump body (12) is electrically connected to the controller (11).

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