Lithium metal negative electrode coating equipment

Abstract

The utility model provides lithium metal cathode coating equipment which comprises a base, two groups of first guide rollers and a second guide roller are arranged on the base side by side, a tensioning assembly is arranged between the two groups of first guide rollers, and a coating assembly is arranged between the first guide rollers and the second guide roller; by arranging the tensioning assembly, the electrode plate can be tensioned so as to prevent the electrode plate from loosening during conveying, the coating quality of the electrode plate is guaranteed, meanwhile, the tensioning assembly can level the electrode plate so as to prevent the electrode plate from wrinkling, and the coating quality of the electrode plate is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrode coating technology, and in particular to a lithium metal anode coating device. Background Technology

[0002] Lithium-ion battery electrodes are a key component of lithium-ion batteries, mainly consisting of the positive electrode, negative electrode, and separator. Together, they form the main electrochemical reaction zone of the battery and play a decisive role in its overall performance. Lithium-ion battery electrodes require coating during processing, necessitating the use of specialized coating equipment.

[0003] Existing electrode sheets are generally coated during the transport process. However, it is difficult to ensure the tautness of the electrode sheets during transport, which can cause them to loosen and affect the uniformity of the coating.

[0004] Therefore, there is an urgent need for a lithium metal anode coating device that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a lithium metal anode coating device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a lithium metal negative electrode coating device, including a base, on which a first guide roller and a second guide roller are arranged side by side. The first guide roller is provided in two sets, and a tensioning component is provided between the two sets of the first guide roller. A coating component is provided between the first guide roller and the second guide roller.

[0008] Preferably, the top of the first guide roller and the top of the second guide roller are on the same horizontal line.

[0009] Preferably, the tensioning assembly includes a frame, the bottom of which is fixedly connected to the base, a top plate on the top of the frame, a limiting groove on the side of the frame, a movable rod slidably disposed in the limiting groove, the movable rod being horizontally positioned, a smoothing plate slidably connected to the movable rod, the top of the smoothing plate being hinged to the top plate via a second connecting rod, the bottom of the smoothing plate contacting the tensioning roller, the tensioning roller being rotatably disposed on a connecting seat, the bottom of the connecting seat being hinged to a threaded block via a first connecting rod, the threaded block being screwed onto both ends of a bidirectional lead screw, and the bidirectional lead screw being rotatably disposed on the base.

[0010] Preferably, the end of the movable rod is provided with a counterweight.

[0011] Preferably, a limiting ring is sleeved on the outer side of the movable rod.

[0012] Preferably, the smearing plate has a semi-circular ring structure.

[0013] Preferably, the threaded block is slidably disposed on the guide rod.

[0014] Preferably, the end of the bidirectional lead screw is provided with a knob.

[0015] Preferably, the coating assembly includes a storage tank, which is fixed to the base by a bracket. The top of the storage tank is provided with a feeding pipe, and the side of the storage tank is connected to a discharge pipe via a material pump. Multiple discharge heads are arranged side by side at the bottom of the discharge pipe.

[0016] Preferably, the system further includes a scraper, which is disposed between the coating assembly and the second guide roller and is connected to the lower part of the support via an electric push rod.

[0017] The present invention achieves the following beneficial technical effects compared to the prior art:

[0018] This utility model provides a lithium metal negative electrode coating device, including a base, on which a first guide roller and a second guide roller are arranged side by side. The first guide roller is provided in two sets, and a tensioning component is provided between the two sets of first guide rollers. A coating component is provided between the first guide roller and the second guide roller. By setting the tensioning component, the electrode sheet can be tensioned to prevent it from becoming loose during transportation, thus ensuring the coating quality of the electrode sheet. At the same time, the tensioning component can also flatten the electrode sheet to prevent it from wrinkling, further ensuring the coating quality of the electrode sheet. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a lithium metal anode coating device provided by this utility model;

[0021] Figure 2 A schematic diagram of the upper structure of the tensioning component in a lithium metal anode coating device provided by this utility model;

[0022] Figure 3 A schematic diagram of the lower structure of the tensioning component in a lithium metal anode coating device provided by this utility model;

[0023] Figure 4 A schematic diagram of the coating component structure in a lithium metal anode coating device provided by this utility model;

[0024] In the diagram: 1. Base; 2. First guide roller; 3. Second guide roller; 4. Storage bin; 5. Material pump; 6. Discharge pipe; 7. Electric push rod; 8. Scraper; 101. Tensioning roller; 102. Bidirectional lead screw; 103. Threaded block; 104. First connecting rod; 105. Guide rod; 201. Strip frame; 202. Movable rod; 203. Smoothing plate; 204. Second connecting rod; 205. Counterweight. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this invention is to provide a lithium metal anode coating device to solve the problems existing in the prior art.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1:

[0029] This embodiment provides a lithium metal anode coating device, such as... Figure 1-4 As shown, it includes a base 1, on which a first guide roller 2 and a second guide roller 3 are arranged side by side. The first guide roller 2 is provided in two sets, and a tensioning component is provided between the two sets of first guide roller 2. A coating component is provided between the first guide roller 2 and the second guide roller 3.

[0030] In one implementation, the top of the first guide roller 2 and the top of the second guide roller 3 are located on the same horizontal line, which can ensure that the electrode sheet is horizontal during transmission.

[0031] In one embodiment, the tensioning assembly includes a frame 201, the bottom of which is fixedly connected to the base 1. The top of the frame 201 is provided with a top plate, and the side of the frame 201 is provided with a limiting groove. A movable rod 202 is slidably provided in the limiting groove and is horizontally arranged. A smoothing plate 203 is slidably connected to the movable rod 202. The top of the smoothing plate 203 is hinged to the top plate through a second connecting rod 204. The bottom of the smoothing plate 203 is in contact with the tensioning roller 101. The tensioning roller 101 is rotatably mounted on a connecting seat. The bottom of the connecting seat is hinged to a threaded block 103 through a first connecting rod 104. The threaded block 103 is screwed onto both ends of a bidirectional lead screw 102. The bidirectional lead screw 102 is rotatably mounted on the base 1.

[0032] In one embodiment, the end of the movable rod 202 is provided with a counterweight 205 for resetting.

[0033] As one implementation, a limiting ring is sleeved on the outer side of the movable rod 202.

[0034] As one implementation method, the smearing plate 203 has a semi-circular ring structure.

[0035] In one implementation, the threaded block 103 is slidably disposed on the guide rod 105 to achieve a guiding function.

[0036] As one implementation, a knob is provided at the end of the bidirectional lead screw 102 for easy rotation.

[0037] In one embodiment, the coating assembly includes a storage tank 4, which is fixed to the base 1 by a bracket. The top of the storage tank 4 is provided with a feeding pipe to facilitate the addition of coating to the inside of the storage tank 4. The side of the storage tank 4 is connected to a discharge pipe 6 via a material pump 5. Multiple discharge heads are arranged side by side at the bottom of the discharge pipe 6 to achieve coating.

[0038] In one embodiment, a scraper 8 is also included. The scraper 8 is disposed between the coating assembly and the second guide roller 3 and is connected to the lower part of the bracket via an electric push rod 7. The scraper 8 can smooth the coating on the electrode sheet, and the electric push rod 7 can control the height position of the scraper 8.

[0039] During electrode coating, the electrode sheet is first passed through the bottom of the two sets of first guide rollers 2, then below the discharge pipe 6, and then over the top of the second guide roller 3. A knob is then turned, causing the bidirectional lead screw 102 to rotate. This causes the two sets of threaded blocks 103 connected to it to move towards each other. Through the hinged connection between the threaded blocks 103, the connecting seat, and the first connecting rod 104, the tension roller 101 is pushed vertically upwards. This facilitates tensioning of the electrode sheet to prevent slack during transport, ensuring the coating quality. Simultaneously, after the tension roller 101 contacts the two sets of troweling plates 203, as the tension roller 101 continues to rise, and with the movable cooperation between the movable rod 202 and the frame 201… This allows the tension roller 101 to push the two sets of movable rods 202 and the two sets of smearing plates 203 to rise simultaneously. Utilizing the sliding fit between the smearing plate 203 and the movable rod 202, and the hinged fit between the smearing plate 203 and the top plate and the second connecting rod 204, the two sets of smearing plates 203 will also move to both sides of the tension roller 101 as they rise. This facilitates the leveling of the electrode sheets on the surface of the tension roller 101 to prevent wrinkles and further ensures the coating quality of the electrode sheets. Finally, the material pump 5 is started to transport the coating material inside the storage tank 4 to the discharge pipe 6 and discharge it through the discharge head to complete the coating operation. After the coating is completed, the reverse knob drives the tension roller 101 to reset. At this time, under the gravity of the counterweight 205, the smearing plate 203 will also reset.

[0040] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A lithium metal negative electrode coating apparatus, characterized by: The base includes a base on which a first guide roller and a second guide roller are arranged side by side. The first guide roller is provided in two sets, and a tensioning assembly is provided between the two sets of the first guide roller. A coating assembly is provided between the first guide roller and the second guide roller. The tensioning assembly includes a frame, the bottom of which is fixedly connected to the base. The top of the frame has a top plate, and the side of the frame has a limiting groove. A movable rod is slidably disposed in the limiting groove and is horizontally positioned. A smoothing plate is slidably connected to the movable rod. The top of the smoothing plate is hinged to the top plate via a second connecting rod. The bottom of the smoothing plate is in contact with a tensioning roller. The tensioning roller is rotatably disposed on a connecting seat. The bottom of the connecting seat is hinged to a threaded block via a first connecting rod. The threaded block is screwed onto both ends of a bidirectional lead screw, which is rotatably disposed on the base.

2. The lithium metal negative electrode coating apparatus of claim 1, wherein: The top of the first guide roller and the top of the second guide roller are on the same horizontal line.

3. The lithium metal negative electrode coating apparatus of claim 1, wherein: The end of the movable rod is equipped with a counterweight.

4. The lithium metal negative electrode coating apparatus of claim 1, wherein: A limiting ring is fitted on the outer side of the movable rod.

5. The lithium metal negative electrode coating apparatus of claim 1, wherein: The smearing plate has a semi-circular ring structure.

6. The lithium metal negative electrode coating apparatus of claim 1, wherein: The threaded block is slidably mounted on the guide rod.

7. The lithium metal negative electrode coating apparatus of claim 1, wherein: The end of the bidirectional lead screw is equipped with a knob.

8. The lithium metal anode coating equipment according to claim 1, characterized in that: The coating assembly includes a storage tank, which is fixed to the base by a bracket. The top of the storage tank is provided with a feeding pipe, and the side of the storage tank is connected to a discharge pipe via a material pump. Multiple discharge heads are arranged side by side at the bottom of the discharge pipe.

9. The lithium metal anode coating equipment according to claim 1, characterized in that: It also includes a scraper, which is disposed between the coating assembly and the second guide roller and is connected to the lower part of the bracket via an electric push rod.

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