Double-sided continuous coating equipment for lithium ion battery

Abstract

The utility model discloses double-sided continuous coating equipment for a lithium ion battery, which relates to the technical field of lithium ion battery production and comprises a support component, a movable assembly; the movable assembly comprises a rotating motor connected to the outer side of one end of the supporting plate, a rotating shaft connected to an output shaft of the rotating motor, a filtering column connected to the outer end of the rotating shaft, a stirring plate connected to the outer surface of the filtering column, a coating box connected to the outer side of one end of the supporting plate and a discharging opening formed in the center of the bottom end of the coating box. The utility model solves the problems that when the pole piece of the existing lithium ion battery is coated, the coating is usually directly put into the coating box and is in direct contact with the coating roller, and when impurities appear in the coating, the coating is in direct contact with the coating roller and is coated on the outer surface of the lithium ion battery, so that the coating quality is influenced, and the coating quality is influenced. And the coating is condensed in the coating box for a long time, so that the use is inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery production, in particular to a double-sided continuous coating device for lithium-ion batteries. Background Art

[0002] During the production of lithium-ion batteries, a coater is required to coat the surface of the electrode plates. Currently, a horizontal coater is usually used for coating. Since the coating effect has an important impact on the battery capacity, internal resistance, cycle life, and safety, people have paid more attention to the coating process of lithium-ion batteries.

[0003] The above has the following disadvantages when in use:

[0004] When coating the electrode plates of existing lithium-ion batteries, the coating material is usually directly put into the coating tank and directly contacts the coating roller. When impurities appear in the coating material, these large-particle impurities will directly contact the coating roller and be coated on the outer surface of the lithium-ion battery electrode plate, affecting the coating quality. Moreover, the coating material will condense in the coating tank for a long time, affecting subsequent use.

[0005] Therefore, we propose a double-sided continuous coating device for lithium-ion batteries to solve the above problems. Summary of the Utility Model

[0006] The utility model provides a double-sided continuous coating device for lithium-ion batteries, which solves the technical problem that when coating the electrode plates of existing lithium-ion batteries, the coating material is usually directly put into the coating tank and directly contacts the coating roller. When impurities appear in the coating material, it will directly contact the coating roller and be coated on the outer surface of the lithium-ion battery electrode plate, affecting the coating quality. Moreover, the coating material will condense in the coating tank for a long time, making it inconvenient to use.

[0007] To solve the above technical problems, a double-sided continuous coating device for lithium-ion batteries provided by the utility model includes:

[0008] A support assembly, the support assembly includes a support plate;

[0009] An activity assembly; the activity assembly includes a rotary motor connected to the outside of one end of the support plate, a rotary shaft connected to the output shaft of the rotary motor, a filter column connected to the outer end of the rotary shaft, a stirring plate connected to the outer surface of the filter column, a coating tank connected to the outside of one end of the support plate, a feeding port opened at the center of the bottom end of the coating tank, a feeding pipe connected to the center of the other outer end of the filter column, and a feeding trough connected to the center of the upper end of the feeding pipe;

[0010] A coating assembly, the coating assembly is arranged inside one end of the support plate.

[0011] Further, the support assembly further includes a feeding roller connected to the center of the lower end of the inner side of the support plate, a limiting roller connected to one end of the inner side of the support plate, and a conveying roller connected to the other section of the inner side of the support plate.

[0012] The feeding roller is used to place the electrode sheets of the lithium-ion battery to be coated, the limiting roller is used to keep the electrode sheets of the lithium-ion battery in a vertically upward state at one end of the inner side of the support plate, and the conveying roller is used to convey the coated electrode sheets of the lithium-ion battery.

[0013] Further, the rotating shaft extends outwards through the support plate, and the outer surface of the filter column is a mesh structure.

[0014] The rotating motor drives the rotating shaft to rotate, so that the filter column rotates driven by the rotating shaft, and the rotation of the filter column can throw the coating outwards, and the impurities are retained inside the filter column.

[0015] Further, the stirring plates are composed of three groups of the same structure, and the outer ends of the stirring plates do not contact the coating tank;

[0016] The feed pipe is in a cross-shaped structure, and the feeding trough is connected to the inside of the coating tank through the feed pipe.

[0017] The coating inside the feeding trough can flow into the inside of the coating tank through the feed pipe, and the rotation of the filter column can drive the stirring plates to rotate, stirring the coating inside the coating tank.

[0018] Further, the coating assembly includes a fixing plate connected to one end of the outer side of the support plate, a fixing pipe connected to the center of the outer side of the fixing plate, a telescopic spring connected to the center of the outer side of the fixing plate, a movable pipe connected to the outer end of the telescopic spring, and a coating roller connected to the outer end of the movable pipe.

[0019] The fixing plate is used to support the fixing pipe, the fixing pipe is used to support the movable pipe, the telescopic spring is used to limit the movable pipe, the movable pipe is used to support the coating roller, and the coating roller is used to contact the outer surface of the electrode sheet of the lithium-ion battery for coating.

[0020] Further, the telescopic spring is located inside the fixing pipe, the movable pipe is in an L-shaped structure, and the front end of the movable pipe is located inside the fixing pipe;

[0021] The coating assembly is composed of two groups of the same structure, and the coating rollers are located below the blanking port.

[0022] The two coating rollers are respectively in contact with the upper and lower side surfaces of the electrode sheet of the lithium-ion battery, so as to realize double-sided continuous coating of the electrode sheet of the lithium-ion battery.

[0023] Compared with the related technology, the utility model has the following beneficial effects:

[0024] 1. In the present utility model, by arranging a movable component, the coating material enters the inside of the filter column through the feed pipe inside the feeding tank, and driven by the rotating motor and the rotating shaft, the filter column throws the coating material into the coating tank, and the impurities are retained inside the filter column, which can effectively prevent impurities from remaining on the electrode plate during coating. At the same time, the rotation of the filter column drives the stirring plate to rotate, and the coating material inside the coating tank is stirred by the stirring plate to avoid the condensation of the coating material.

[0025] 2. In the present utility model, by arranging a coating component, two coating rollers are placed opposite to each other and are respectively in contact with the outer surface of the electrode plate of the lithium-ion battery. Since the two telescopic springs will maintain the same elastic force in the non-loaded state, the pressures of the two coating rollers on the surface of the electrode plate of the lithium-ion battery are the same, so that while the double-sided continuous coating of the electrode plate of the lithium-ion battery is carried out, a uniform coating thickness is maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present utility model;

[0027] Figure 2 is a schematic structural diagram of the support component of the present utility model;

[0028] Figure 3 is a schematic structural diagram of the movable component of the present utility model;

[0029] Figure 4 is a schematic structural diagram of the coating component of the present utility model.

[0030] Reference numerals in the figure: 1. Support component; 11. Support plate; 12. Feeding roller; 13. Limiting roller; 14. Conveying roller; 2. Movable component; 21. Rotating motor; 22. Rotating shaft; 23. Filter column; 24. Stirring plate; 25. Coating tank; 26. Discharge port; 27. Feed pipe; 28. Feeding tank; 3. Coating component; 31. Fixed plate; 32. Fixed pipe; 33. Telescopic spring; 34. Movable pipe; 35. Coating roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1, given by Figures 1-3 A double-sided continuous coating device for a lithium-ion battery, comprising:

[0033] Support component 1, the support component 1 includes a support plate 11;

[0034] Moving component 2; the moving component 2 includes a rotary motor 21 connected to the outside of one end of the support plate 11, a rotary shaft 22 connected to the output shaft of the rotary motor 21, a filter column 23 connected to the outer end of the rotary shaft 22, a stirring plate 24 connected to the outer surface of the filter column 23, a paint tank 25 connected to the outside of one end of the support plate 11, a feeding port 26 opened at the center of the bottom end of the paint tank 25, a feeding pipe 27 connected to the center of the other outer end of the filter column 23, and a feeding trough 28 connected to the center of the upper end of the feeding pipe 27;

[0035] The support component 1 further includes a discharging roller 12 connected to the center of the lower end inside the support plate 11, a limiting roller 13 connected to one end inside the support plate 11, and a conveying roller 14 connected to the other section inside the support plate 11;

[0036] The rotary shaft 22 extends outwards through the support plate 11, and the outer surface of the filter column 23 is a mesh structure;

[0037] The stirring plate 24 is composed of three identical structures, and the outer end of the stirring plate 24 does not contact the paint tank 25;

[0038] The feeding pipe 27 is a cross-shaped structure, and the feeding trough 28 is communicated with the inside of the paint tank 25 through the feeding pipe 27;

[0039] Working principle: Put the paint into the feeding trough 28, the paint enters the inside of the filter column 23 from the feeding trough 28 through the feeding pipe 27, start the rotary motor 21, the rotary motor 21 drives the rotary shaft 22 to rotate, the rotary shaft 22 drives the filter column 23 to rotate, the rotation of the filter column 23 causes the paint to be thrown outwards into the paint tank 25, leaving the impurities inside the filter column 23, keeping the paint clean. At the same time, the rotation of the filter column 23 drives the stirring plate 24 to rotate, and the stirring plate 24 stirs the paint inside the paint tank 25 to prevent the paint from coagulating inside the paint tank 25.

[0040] Example two, given by Figure 4 On the basis of Example one, it further includes:

[0041] Coating component 3, the coating component 3 is arranged inside one end of the support plate 11;

[0042] The coating component 3 includes a fixing plate 31 connected to the outside of one end of the support plate 11, a fixed pipe 32 connected to the center of the outside of the fixing plate 31, a telescopic spring 33 connected to the center of the outside of the fixing plate 31, a movable pipe 34 connected to the outer end of the telescopic spring 33, and a coating roller 35 connected to the outer end of the movable pipe 34;

[0043] The telescopic spring 33 is located inside the fixed tube 32. The movable tube 34 has an L-shaped structure, and the front end of the movable tube 34 is located inside the fixed tube 32.

[0044] The coating assembly 3 is composed of two identical structures, and the coating roller 35 is located below the material discharge port 26.

[0045] Working principle: When the electrode plate of the lithium-ion battery passes through the limiting roller 13, the coating flows downward from the material discharge port 26 to the outer surface of the coating roller 35. At this time, since the outer surface of the coating roller 35 is in contact with the surface of the electrode plate of the lithium-ion battery, the coating roller 35 moves outward. The outward movement of the coating roller 35 drives the movable tube 34 to move outward, and the outward movement of the movable tube 34 drives the telescopic spring 33 to be compressed. The two telescopic springs 33 will maintain the same elastic force when not under external force, so that the pressures on both sides of the electrode plate of the lithium-ion battery by the two coating rollers 35 are the same. Thus, while continuously coating both sides of the electrode plate of the lithium-ion battery, the coating is kept uniform.

[0046] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery double-sided continuous coating device, characterized in that: include: A support assembly (1), the support assembly comprising a support plate (11); A movable component (2); the movable component (2) comprises a rotating motor (21) connected to the outer side of one end of a support plate (11), a rotating shaft (22) connected to the output shaft of the rotating motor (21), a filter column (23) connected to the outer end of the rotating shaft (22), a stirring plate (24) connected to the outer surface of the filter column (23), a paint box (25) connected to the outer side of one end of the support plate (11), a feed port (26) provided at the center of the bottom end of the paint box (25), a feed pipe (27) connected to the center of the outer end of the other side of the filter column (23), and a feeding trough (28) connected to the center of the upper end of the feed pipe (27); A coating component (3); the coating component (3) is arranged on the inner side of one end of the support plate (11).

2. A lithium-ion battery double-sided continuous coating device according to claim 1, characterized in that: The support assembly (1) further comprises a discharge roller (12) connected to the center of the lower end of the inner side of the support plate (11), a limit roller (13) connected to one end of the inner side of the support plate (11), and a conveying roller (14) connected to another section of the inner side of the support plate (11).

3. A lithium-ion battery double-sided continuous coating device according to claim 1, characterized in that: The rotating shaft (22) penetrates the support plate (11) and extends outwards, and the outer surface of the filter column (23) is a mesh structure.

4. A lithium-ion battery double-sided continuous coating device according to claim 1, characterized in that: The stirring plates (24) are composed of three groups of identical structures, and the outer ends of the stirring plates (24) do not contact the coating box (25); The feed pipe (27) is a cross-shaped structure, and the feed trough (28) is connected to the interior of the coating box (25) through the feed pipe (27).

5. The lithium-ion battery double-sided continuous coating device according to claim 1, characterized in that: The coating assembly (3) comprises a fixed plate (31) connected to one end of the outer side of the support plate (11), a fixed tube (32) connected to the center of the outer side of the fixed plate (31), a telescopic spring (33) connected to the center of the outer side of the fixed plate (31), a movable tube (34) connected to the outer end of the telescopic spring (33), and a coating roller (35) connected to the outer end of the movable tube (34).

6. A lithium-ion battery double-sided continuous coating device according to claim 5, characterized in that: The telescopic spring (33) is located inside the fixed tube (32); the movable tube (34) is an L-shaped structure, and the front end of the movable tube (34) is located inside the fixed tube (32); The coating assembly (3) is composed of two groups of identical structures, and the coating roller (35) is located below the feed opening (26).

Images