CN114308557A

CN114308557A - Lithium battery coating system capable of conveniently controlling coating thickness of lithium battery

Info

Publication number: CN114308557A
Application number: CN202210008110.7A
Authority: CN
Inventors: 林永亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-04-12

Abstract

The invention discloses a lithium battery coating system convenient for controlling the coating thickness of a lithium battery, which comprises a box body and a plurality of groups of coating components fixedly arranged on the top of the box body through a support, wherein an adjustable scraping mechanism is arranged on one side of the support on the top of the box body, a partition plate is fixedly connected between two sides of the inner wall of the box body, a feeding unit is fixedly arranged on the top of the partition plate, a drying unit is fixedly arranged on the bottom of the inner wall of the box body, and a material receiving component is arranged on the bottom of the adjustable scraping mechanism. This convenient lithium cell coating system to lithium cell coating thickness control can realize carrying out the free regulation of high accuracy according to the demand of production lithium cell coating thickness, fine reaching the purpose that is suitable for different model lithium cell coating requirements, realized not only quick but also convenient adjusting the coating thickness, expanded the application range of coating equipment greatly to people's use has been made things convenient for greatly.

Description

Lithium battery coating system capable of conveniently controlling coating thickness of lithium battery

Technical Field

The invention relates to the technical field of lithium battery production, in particular to a lithium battery coating system which is convenient for controlling the coating thickness of a lithium battery.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, and the lithium metal has very high requirements on the environment due to the very active chemical characteristics of the lithium metal, so that the lithium metal is processed, stored and used. With the development of scientific technology, lithium batteries have become mainstream, and the lithium batteries can be roughly divided into two types: lithium metal batteries and lithium ion batteries. The lithium ion battery does not contain metallic lithium, the production process flow of the lithium battery mainly comprises electrode slurry preparation, coating, pole piece punching, lamination, soft package battery assembly, liquid injection and battery sealing, wherein lithium battery coating is an important process of lithium battery production, film coating equipment is generally adopted for coating treatment in the lithium battery coating process, the film coating equipment is mainly used for surface coating process production of films and paper, a layer of glue, paint or ink with specific functions is coated on a coiled base material, the base material is dried and then coiled, a special multifunctional coating head is adopted, surface coating production in various forms can be realized, all winding and unwinding of a coating machine are provided with a full-speed automatic film receiving mechanism, and PLC program tension closed-loop automatic control is realized.

Refer to a lithium battery pole piece coating machine that chinese patent publication is CN110787966A, through setting up the nozzle, when changeing the rod at the coping pole piece, because the nozzle has been linked firmly in the annular plate top inner wall, and the nozzle with put the cistern intercommunication, the liquid of putting the cistern passes through the nozzle and spouts to changeing between the rod, not only can reduce the temperature on pole piece and the emery layer simultaneously can also wash away the impurity granule that the emery layer ground off at this in-process, it is inhomogeneous to make the pole piece scribble the film in-process of pole piece, can also reduce the pressure of putting the cistern simultaneously, prevent to put too big damage to the weeping hole of causing of pressure in the cistern, flow into the water tank through the weeping hole after the coolant liquid flows down from changeing the rod in, with this circulation work.

Referring to Chinese patent publication No. CN107262325B, a lithium battery coating device with uniform coating is characterized in that a distributing roller is arranged in a coating box, only part of the distributing roller is exposed out of the bottom surface of the coating box, when the distributing roller coats an electrode material, the front and the back of the distributing roller are covered by the bottom surface of the coating box, the coating cannot splash, and after the distributing roller distributes the coating, the bottom surface of the distributing box has a floating effect on the material under the coating, so that the uniform coating thickness and the reliable coating quality are ensured.

A comprehensive analysis of the above referenced patents can yield the following drawbacks:

1) the existing lithium battery coating equipment can process the slurry thickness on the current collector thin film of the lithium battery to meet the required uniform size requirement by adopting a flattening device or a scraper structure, for example, refer to a lithium battery pole piece coating machine of patent CN110787966A and a lithium battery coating equipment of patent CN107262325B with uniform coating, the coating thickness is uniform by adopting a single material pushing or scraping mode, the application range is narrow, the high-precision free adjustment can not be realized according to the requirement of producing the coating thickness of the lithium battery coating, the purpose of being suitable for the coating requirements of different types of lithium batteries can not be achieved, the coating thickness can not be adjusted quickly and conveniently, and great inconvenience is brought to the use of people.

2) The existing lithium battery coating equipment is inconvenient to recover the excess materials in the coating process, cannot realize automatic excess material centralized recovery, cannot achieve the purpose of quickly and conveniently recovering the coating excess materials, greatly reduces the production efficiency, increases the labor cost, and is very unfavorable for the mass production of lithium batteries of lithium battery production enterprises.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a lithium battery coating system which is convenient for controlling the coating thickness of a lithium battery, and solves the problems that the coating thickness of the existing lithium battery coating equipment is uniform by adopting a single material pushing or scraping mode, the application range is narrow, high-precision free adjustment can not be realized according to the requirement of producing the coating thickness of the lithium battery coating, the purpose of meeting the coating requirements of lithium batteries of different models can not be achieved, and the coating thickness can not be adjusted quickly and conveniently.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a convenient lithium cell coating system to lithium cell coating thickness control, has a plurality of groups coating assembly including box and box top through support fixed mounting, the top of box and the one side that is located the support are provided with adjustable scraping mechanism, and fixedly connected with division board between the both sides of box inner wall, the top fixed mounting of division board has the feed unit, and the bottom fixed mounting of box inner wall has drying unit, the bottom of scraping mechanism is provided with receipts material subassembly with adjustable.

Scrape material mechanism including fixed mounting the framework on the box top with adjustable, the material through-hole has been seted up to one side of framework, and the both sides section of thick bamboo slider sliding connection of framework inner wall has the slide, mounting bracket fixedly connected with movable rod is passed through at the top of slide, the bottom of movable rod runs through the framework and extends to in the material through-hole, and the movable rod is located the inside surface fixedly connected with spacing tooth of framework, the inside of framework rotates through the bearing and is connected with the pivot, the one end of pivot runs through the framework and extends to the outside of framework, and the pivot extends to the outside one end fixedly connected with knob of framework, the surface of framework is carved with the scale with knob looks adaptation, and the pivot is located the inside surface fixedly connected with of framework and spacing tooth engaged with limit gear, be provided with the locking subassembly in one side of framework and the pivot.

Preferably, receive the material subassembly and include the hopper of fixed mounting in the movable rod bottom, the bottom fixedly connected with of hopper scrapes the material swash plate, and rotates through the bearing between the inside front and back both sides of hopper and be connected with the screw rod, the surface threaded connection of screw rod has the removal sleeve, and removes the top sliding connection of telescopic top through slider and hopper inner wall.

Preferably, the bottom of the movable sleeve is fixedly connected with a brush head through a connecting rod, one side of the hopper is fixedly provided with a driving motor through a mounting frame, an output shaft of the driving motor is fixedly connected with one end of a screw rod through a coupler, and one side of the inner wall of the hopper is fixedly provided with a material suction nozzle.

Preferably, the receiving pump is fixedly mounted inside the frame body through a connecting plate, and a feed inlet of the receiving pump is communicated with the material suction nozzle through a pipeline.

Preferably, the coating subassembly includes respectively that it rolls the roller to rotate material roller and coating of connecting on the support through rotating, the pivot that the roller was rolled to coating is the hollow shaft, and the surface cover that the roller was rolled to coating is equipped with and soaks the material sponge, the discharge gate of feed unit passes through the one end intercommunication of pipeline and hollow shaft.

Preferably, the feeding unit pumps the coating slurry into a hollow shaft of the coating roller through a pipeline, and then the coating slurry is guided into the dipping sponge through a channel arranged in the hollow shaft, so that the coating roller is fed.

Preferably, the locking subassembly includes the bull stick of threaded connection on the framework inner wall and the friction cover of fixed mounting in the pivot surface, the one end fixedly connected with of bull stick and the arc locking piece of friction cover looks adaptation.

Preferably, guide pulleys are fixedly mounted on the top of the box body and the bottom of the partition plate, and the guide pulleys are used for guiding and conveying the metal film coated in the box body into a drying unit for drying treatment.

Preferably, the inside of the box body is respectively and fixedly provided with a central processing unit and a time relay, and the front surface of the box body is fixedly provided with a control panel.

Preferably, a protective cover is fixedly mounted at the top of the box body.

(III) advantageous effects

The invention provides a lithium battery coating system which is convenient for controlling the coating thickness of a lithium battery. Compared with the prior art, the method has the following beneficial effects:

(1) the adjustable scraping mechanism comprises a frame body fixedly arranged on the top of a box body, a material through hole is formed in one side of the frame body, sliding plates are connected to two side cylinder sliding parts on the inner wall of the frame body in a sliding mode, a movable rod is fixedly connected to the top of each sliding plate through a mounting frame, the bottom end of each movable rod penetrates through the frame body and extends into the material through hole, limiting teeth are fixedly connected to the outer surface of each movable rod, which is located inside the frame body, a rotating shaft is rotatably connected to the inside of the frame body through a bearing, one end of each rotating shaft penetrates through the frame body and extends to the outside of the frame body, a knob is fixedly connected to one end, which extends to the outside of the frame body, scales matched with the knob are carved on the outer surface of the frame body, limiting gears meshed with the limiting teeth are fixedly connected to the outer surface, which is located inside the frame body, and locking assemblies are arranged on one side of the frame body and the rotating shaft, the coating device can realize high-precision free adjustment according to the requirement for producing the coating thickness of the lithium battery coating, well achieves the purpose of being suitable for the coating requirements of lithium batteries of different models, realizes quick and convenient adjustment of the coating thickness, greatly expands the application range of the coating equipment, and greatly facilitates the use of people.

(2) This convenient lithium cell coating system to lithium cell coating thickness control, it receives the material subassembly and includes the hopper of fixed mounting in the movable rod bottom, the material swash plate is scraped to the bottom fixedly connected with of hopper, and rotate through the bearing between the inside front and back both sides of hopper and be connected with the screw rod, the surface threaded connection of screw rod has the traveling sleeve, and the top sliding connection of slider and hopper inner wall is passed through at the traveling sleeve's top, can realize automatic clout and concentrate the recovery, fine reached not only quick but also convenient purpose of carrying out the coating clout and retrieving, the clout is retrieved conveniently, the production efficiency is greatly improved, labor cost is reduced, thereby it is very useful to the mass lithium cell production of lithium cell manufacturing enterprise.

(3) This convenient lithium cell coating system to lithium cell coating thickness control, its locking subassembly include threaded connection in the friction cover of the runner and fixed mounting on the pivot surface of framework inner wall, the one end fixedly connected with of runner and the arc locking piece of friction cover looks adaptation can realize that the pairing rotation adjusting device carries out spacing locking, can make adjusting device carry out the locking location fast, and convenient to use is swift, very is favorable to promoting.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a broken-away view of the structure of the present invention;

FIG. 3 is a schematic structural view of the present invention without the adjustable scraping mechanism;

FIG. 4 is a cross-sectional view of a structure of the present invention;

FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 4;

FIG. 6 is a schematic cross-sectional view of an adjustable scraping mechanism according to the present invention;

FIG. 7 is an enlarged view of a portion of the invention at B in FIG. 6;

FIG. 8 is a schematic view of the construction of a spacing tooth and a fiber gear of the present invention;

FIG. 9 is a side view of the interior of the material collection assembly of the present invention.

In the figure, 1 box, 2 supports, 3 coating components, 31 material rollers, 32 coating roller rollers, 33 dipping sponge, 4 adjustable scraping mechanisms, 41 frame bodies, 42 material passing holes, 43 sliding plates, 44 movable rods, 45 limit teeth, 46 rotating shafts, 47 knobs, 48 scales, 49 limit gears, 410 locking components, 4101 rotating rods, 4102 friction sleeves, 4103 arc-shaped locking blocks, 5 separation plates, 6 feeding units, 7 drying units, 8 material receiving components, 81 hoppers, 82 material scraping inclined plates, 83 screws, 84 moving sleeves, 85 brush heads, 86 driving motors, 87 material suction nozzles, 9 material receiving pumps, 10 guide pulleys, 11 central processors, 12 time relays, 13 control panels and 14 protective covers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, an embodiment of the present invention provides a technical solution: a lithium battery coating system convenient for controlling the coating thickness of a lithium battery comprises a box body 1 and a plurality of groups of coating components 3 fixedly arranged on the top of the box body through a support 2, an adjustable scraping mechanism 4 is arranged on the top of the box body 1 and positioned on one side of the support 2, a partition plate 5 is fixedly connected between two sides of the inner wall of the box body 1, a feeding unit 6 is fixedly arranged on the top of the partition plate 5, a drying unit 7 is fixedly arranged on the bottom of the inner wall of the box body 1, the drying unit 7 adopts a temperature-controllable automatic drying machine with the model of 202-00A, a material receiving component 8 is arranged on the bottom of the adjustable scraping mechanism 4, a central processing unit 11 and a time relay 12 are respectively and fixedly arranged in the box body 1, the central processing unit 11 is ARM9, the time relay 12 is DS-31, and a control panel 13 is fixedly arranged on the front side of the box body 1, the top fixed mounting of box 1 has protection casing 14, and protection casing 14 can carry out dustproof protection to the film coating in-process, avoids the coating precision of external factor influence equipment to the yield has been guaranteed.

As shown in fig. 4, in the embodiment of the present invention, the coating assembly 3 includes a material roller 31 and a coating roller 32 rotatably connected to the bracket 2 by a rotating member, the material supplying unit 6 includes a material pump and a material box connected thereto, the material pump can pump the slurry filled with ingredients in the material box into the coating roller 32 to supply the coating, a rotating shaft of the coating roller 32 is a hollow shaft, an impregnating sponge 33 is sleeved on an outer surface of the coating roller 32, a discharge port of the material supplying unit 6 is communicated with one end of the hollow shaft by a pipeline, when the pipeline drawn out by the material supplying unit 6 is communicated with the hollow shaft, the connection is completed by a rotary seal joint, the pipeline is not twisted by the rotation of the coating roller 32, thereby ensuring the normal operation of the coating process, after the coating slurry is pumped into the hollow shaft of the coating roller 32 by the material supplying unit 6 through the pipeline, the coating slurry is guided into the impregnating sponge 33 through a channel arranged in the hollow shaft, the soaking sponge 33 has good water absorption effect, and can quickly absorb water from the slurry and coat the slurry on the surface of the film to complete the feeding of the coating roller 32.

As shown in fig. 5-8, in the embodiment of the present invention, the adjustable scraping mechanism 4 includes a frame 41 fixedly installed on the top of the box body 1, a material through hole 42 is formed on one side of the frame 41, a sliding plate 43 is slidably connected to a cylinder sliding member on two sides of the inner wall of the frame 41, a movable rod 44 is fixedly connected to the top of the sliding plate 43 through an installation frame, the bottom end of the movable rod 44 penetrates through the frame 41 and extends into the material through hole 42, a limit tooth 45 is fixedly connected to the outer surface of the movable rod 44 located inside the frame 41, a rotating shaft 46 is rotatably connected inside the frame 41 through a bearing, one end of the rotating shaft 46 penetrates through the frame 41 and extends to the outside of the frame 41, a knob 47 is fixedly connected to one end of the rotating shaft 46 extending to the outside of the frame 41, a scale 48 adapted to the knob 47 is engraved on the outer surface of the frame 41, and a limit gear 49 engaged with the limit tooth 45 is fixedly connected to the outer surface of the rotating shaft 46 located inside the frame 41, the locking assembly 410 is arranged on one side of the frame body 41 and the rotating shaft 46, the guide pulleys 10 are fixedly arranged on the top of the box body 1 and the bottom of the partition plate 5, the guide pulleys 10 are used for guiding and conveying the metal film coated in the frame body 41 into the drying unit 7 for drying treatment, and the guide pulleys 10 are provided with tensioning mechanisms and can be freely adjusted according to the tension degree of film winding.

As shown in fig. 7-8, in the embodiment of the present invention, the locking assembly 410 includes a rotating rod 4101 screwed on the inner wall of the frame 41 and a friction sleeve 4102 fixedly mounted on the outer surface of the rotating shaft 46, one end of the rotating rod 4101 is fixedly connected with an arc locking block 4103 adapted to the friction sleeve 4102, and the outer surface of the friction sleeve 4102 and the inner wall of the arc locking block 4103 are both subjected to shot blasting treatment with frosting, so that the friction factor is large, and a large friction force can be generated during use.

As shown in fig. 9, in the embodiment of the present invention, the material receiving assembly 8 includes a hopper 81 fixedly installed at the bottom end of the movable rod 44, a scraping inclined plate 82 is fixedly connected to the bottom of the hopper 81, a screw 83 is rotatably connected between the front side and the rear side of the inside of the hopper 81 through a bearing, a moving sleeve 84 is connected to the outer surface of the screw 83 in a threaded manner, the top of the moving sleeve 84 is slidably connected to the top of the inner wall of the hopper 81 through a sliding member, a brush head 85 is fixedly connected to the bottom of the moving sleeve 84 through a connecting rod, a driving motor 86 is fixedly installed at one side of the hopper 81 through an installation frame, the driving motor 86 is a servo motor of MR-E10A-KH 003100, an output shaft of the driving motor 86 is fixedly connected to one end of the screw 83 through a coupling, and a material suction nozzle 87 is fixedly installed at one side of the inner wall of the hopper 81.

In the embodiment of the invention, the receiving pump 9 is fixedly arranged in the frame body 41 through a connecting plate, the model of the receiving pump 9 is 100DG-B38CS, and the feed inlet of the receiving pump 9 is communicated with the material suction nozzle 87 through a pipeline.

Before use, control programs are respectively recorded into the central processor 11 and the time relay 12 through the control panel 13, wherein the control programs comprise the working time of the feeding unit 6 and the time of the drying unit 7.

Early preparation: the material roller 31 wound with a film to be coated is arranged on the bracket 2, the head end of the film is pulled out, the film is wound from the coating roller 32, the adjustable material scraping mechanism 4, the guide pulley 10 and the drying unit 7 respectively, a producer rotates the rotary rod 4101, the arc locking block 4103 is separated from the friction sleeve 4102, the rotating shaft 46 can be out of constraint, then the scale 48 is observed to rotate the knob 47, the knob 47 can drive the movable rod 44 to move up and down through the matching work of the rotating shaft 46, the limit gear 49 and the limit tooth 45 respectively, the movable rod 44 drives the hopper 81 to be adjusted up and down, after the knob 47 rotates to the required scale 48, the rotary rod 4101 is rotated, the arc locking block 4103 is in close contact with the friction sleeve 4102, locking is realized, and the position adjustment of the material scraping mechanism is completed.

Scraping: after the preparation in the earlier stage is completed, the control panel 13 is operated to enable the central processing unit 11 to control the material pump of the feeding unit 6 to start working, slurry in the material box is pumped into the hollow shaft of the coating roller 32, the slurry is sent to the soaking sponge 33, the sponge absorbs water and coats the surface of the film, when the film coated with the slurry passes through the material through hole 42, the material layer with the coating exceeding the set thickness is scraped into the material hopper 81 through the material scraping inclined plate 82, at the moment, the central processing unit 11 controls the driving motor 86 to start working, the driving motor 86 drives the brush head 85 to move from the foremost end to the rearmost end in the material hopper 81 through the screw 83 and the moving sleeve 84 respectively, as the brush head 85 is in close contact with the material scraping inclined plate 82 and the bottom of the inner wall of the material hopper 81, redundant slurry on the material scraping inclined plate 81 and the material scraping inclined plate 82 can be scraped to the position of the material suction nozzle 87, at the moment, the central processing unit 11 controls the material collecting pump 9 to start working, the scraped materials are completely extracted by the material suction nozzle 87 for recycling.

Drying treatment: the thin film after being scraped can be led into the drying unit 7 through the guide pulley 10, under the drying temperature of settlement, with thick liquids fast drying in the surface of thin film, then the processing of one process is carried out to the derivation equipment, has just so accomplished this convenience to the whole course of work of lithium battery coating system of lithium battery coating thickness control.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a convenient lithium cell coating system to lithium cell coating thickness control, has a plurality of groups coating components (3), its characterized in that including box (1) and box top through support (2) fixed mounting: an adjustable scraping mechanism (4) is arranged at the top of the box body (1) and on one side of the support (2), a partition plate (5) is fixedly connected between the two sides of the inner wall of the box body (1), a feeding unit (6) is fixedly installed at the top of the partition plate (5), a drying unit (7) is fixedly installed at the bottom of the inner wall of the box body (1), and a material receiving assembly (8) is arranged at the bottom of the adjustable scraping mechanism (4);

the adjustable scraping mechanism (4) comprises a frame body (41) fixedly installed on the top of the box body (1), a material passing hole (42) is formed in one side of the frame body (41), a sliding plate (43) is connected to a sliding piece on two sides of the inner wall of the frame body (41) in a sliding mode, a movable rod (44) is fixedly connected to the top of the sliding plate (43) through an installation frame, the bottom end of the movable rod (44) penetrates through the frame body (41) and extends into the material passing hole (42), a limiting tooth (45) is fixedly connected to the outer surface of the movable rod (44) located inside the frame body (41), a rotating shaft (46) is rotatably connected to the inside of the frame body (41) through a bearing, one end of the rotating shaft (46) penetrates through the frame body (41) and extends to the outside of the frame body (41), a knob (47) is fixedly connected to one end of the rotating shaft (46) extending to the outside of the frame body (41), and scales (48) matched with the knob (47) are carved on the outer surface of the frame body (41), and the outer surface of the rotating shaft (46) positioned in the frame body (41) is fixedly connected with a limiting gear (49) meshed with the limiting teeth (45), and one side of the frame body (41) and the rotating shaft (46) are provided with locking assemblies (410).

2. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 2, wherein: receive material subassembly (8) including fixed mounting in hopper (81) of movable rod (44) bottom, the bottom fixedly connected with of hopper (81) scrapes material swash plate (82), and rotates through the bearing between the inside front and back both sides of hopper (81) and be connected with screw rod (83), the surface threaded connection of screw rod (83) has removal sleeve (84), and the top sliding connection of slider and hopper (81) inner wall is passed through at the top of removal sleeve (84).

3. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 2, wherein: the bottom of moving sleeve (84) is through connecting rod fixedly connected with brush head (85), and there is driving motor (86) one side of hopper (81) through mounting bracket fixed mounting, the output shaft of driving motor (86) passes through the shaft coupling and the one end fixed connection of screw rod (83), and one side fixed mounting of hopper (81) inner wall has material suction nozzle (87).

4. A lithium battery coating system that facilitates coating thickness control for a lithium battery as defined in claim 3, wherein: the inside of framework (41) is through connecting plate fixed mounting have material receiving pump (9), and the feed inlet of material receiving pump (9) passes through the pipeline and inhales material mouth (87) intercommunication.

5. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 1, wherein: coating subassembly (3) include respectively through rotating material roller (31) and coating roller (32) of connecting on support (2) rotation, the pivot that coating roller (32) was rolled is the hollow shaft, and the surface cover of coating roller (32) is equipped with soaks material sponge (33), the discharge gate of feed unit (6) passes through the one end intercommunication of pipeline and hollow shaft.

6. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 1, wherein: and the feeding unit (6) pumps the coating slurry into a hollow shaft of the coating roller (32) through a pipeline, and then the coating slurry is guided into the dipping sponge (33) through a channel arranged in the hollow shaft to complete feeding of the coating roller (32).

7. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 1, wherein: the locking assembly (410) comprises a rotating rod (4101) in threaded connection with the inner wall of the frame body (41) and a friction sleeve (4102) fixedly installed on the outer surface of the rotating shaft (46), and one end of the rotating rod (4101) is fixedly connected with an arc locking block (4103) matched with the friction sleeve (4102).

8. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 1, wherein: the top of the box body (1) and the bottom of the partition plate (5) are fixedly provided with guide pulleys (10), and the guide pulleys (10) are used for guiding and conveying the metal film coated in the frame body (41) into the drying unit (7) for drying treatment.

9. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 1, wherein: the inside of box (1) is fixed mounting respectively has central processing unit (11) and time relay (12), and the front fixed mounting of box (1) has control panel (13).

10. The lithium battery coating system that facilitates coating thickness control for a lithium battery as recited in claim 1, wherein: the top of the box body (1) is fixedly provided with a protective cover (14).