Film forming equipment for dry-method battery

Abstract

The utility model discloses dry method battery film forming equipment, which comprises an equipment main body, the equipment main body comprises two compression rollers, the two compression rollers are arranged at an interval, an operation gap is formed between the two compression rollers, and the operation gap is used for materials to be extruded to pass through; cleaning mechanisms are arranged on the sides, away from the operation gap, of the two pressing rollers, each cleaning mechanism comprises a brush body, a liquid sprayer and a cleaning roller, the brush bodies, the liquid sprayers and the cleaning rollers are sequentially arranged in the rotation direction of the pressing rollers, and the brush bodies are used for removing impurities on the operation faces of the pressing rollers for the first time; the liquid sprayer is used for spraying cleaning liquid to the working surface of the compression roller subjected to primary impurity removal; the cleaning roller is used for removing cleaning liquid on the working face of the pressing roller to remove impurities again. According to the technical scheme provided by the utility model, the brush body firstly removes impurities with relatively low adhesion, and then the liquid sprayer sprays the cleaning liquid, so that the cleaning roller thoroughly cleans the compression roller, the surface of the compression roller is kept clean when the compression roller extrudes materials in an operation gap, and the quality of a subsequent film is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery roll forming technology, and in particular to a film forming device for dry batteries. Background Technology

[0002] Lithium-ion batteries are increasingly widely used in consumer electronics, electric vehicles, and energy storage due to their high energy density and long cycle life. In the dry process, no solvents are needed; the battery raw materials are in powder form. A binder is added to the powder, and then an extrusion device is used to press the battery raw material powder together with a positive or negative current collector to produce the lithium-ion battery electrode film. Existing dry-process lithium-ion battery electrode films are processed using roller pressing equipment. During processing, impurities such as fibers and material particles easily adhere to the outer surface of the rollers. These residual impurities can affect the quality of the subsequent film (e.g., indentations appear on the film surface, or even breakage occurs). Utility Model Content

[0003] The main purpose of this invention is to provide a film-forming device for dry-process batteries, which aims to solve the problem of impurities such as fibers and material particles easily adhering to the outer surface of the pressure roller.

[0004] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0005] A film-forming apparatus for dry-process batteries includes a main body comprising two pressure rollers spaced apart, forming a working gap for material to be extruded. A cleaning mechanism is provided on the side of each pressure roller opposite to the working gap. The cleaning mechanism includes a brush, a sprayer, and a cleaning roller, arranged sequentially along the rotation direction of the pressure rollers. The brush is used to initially remove impurities from the working surface of the pressure rollers. The sprayer sprays cleaning fluid onto the working surface of the pressure rollers after the initial impurity removal. The cleaning roller removes the cleaning fluid from the working surface of the pressure rollers for further cleaning.

[0006] Preferably, the brush body includes a brush head, a connecting rod, a mounting base, and a base. One end of the connecting rod is connected to the brush head, and the other end of the connecting rod is connected to the mounting base. The base is fixed to the side of the pressure roller away from the working gap. The mounting base is hinged to the base via a rotating shaft, the axis of which is parallel to the axis of the pressure roller. The base is provided with a fixing mechanism for fixing the relative positions of the mounting base and the base.

[0007] Preferably, the fixing mechanism includes a top plate and a bottom plate, which are vertically spaced apart, forming an adjustment space between them, and the mounting base is located within the adjustment space; the top plate is provided with an adjuster, which is driven and connected to the base; a spring seat is provided on the side of the bottom plate facing the top plate, and the spring seat abuts against the mounting base.

[0008] Preferably, the top plate has a threaded through hole along its thickness; the adjuster includes a handle, a screw, and a pressure block, the handle is located on the side of the top plate away from the adjustment space, the pressure block is located on the side of the top plate facing the mounting base, and the pressure block abuts against the mounting base; one end of the screw is connected to the handle, and the other end of the screw is threaded to the threaded through hole and extends into the adjustment space to connect to the pressure block.

[0009] Preferably, the spring seat includes a support block and a spring spring, the support block being located on the side of the base plate facing the mounting base; the spring spring being located between the support block and the base plate, one end of the spring spring being connected to the support block, and the other end of the spring spring being connected to the base plate.

[0010] Preferably, the mounting base has a mounting hole on the side facing the brush head, and an electrically controlled telescopic rod is fixedly installed in the mounting hole. The output end of the electrically controlled telescopic rod drives and connects to the end of the connecting rod away from the brush body.

[0011] Preferably, the cleaning mechanism further includes a negative pressure unit and a suction tube, one end of the suction tube being connected to the negative pressure unit, the other end of the suction tube being located close to the brush body, and the end of the suction tube away from the negative pressure unit being located on the side of the brush body opposite to the sprayer.

[0012] Preferably, the cleaning roller includes a roller body and a cleaning sleeve, wherein the cleaning sleeve is detachably fitted onto the side of the roller body facing the working surface of the pressure roller.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] The brush body and cleaning roller provide dual cleaning. The brush body first removes impurities with low adhesion, and then the cleaning liquid is sprayed through the sprayer to ensure that the cleaning roller thoroughly cleans the pressure roller. This ensures that the surface remains clean when the pressure roller squeezes the material in the gap, effectively guaranteeing the quality of the subsequent film. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the film-forming equipment for dry-process batteries according to the present invention;

[0017] Figure 2 This is a schematic diagram of the brush body.

[0018] Explanation of icon numbers:

[0019] 1-Pressure roller; 11-Working gap; 12-Suction pipe;

[0020] 2-Brush body; 21-Brush head; 22-Connecting rod; 23-Mounting base; 24-Base; 25-Spindle; 26-Mounting hole; 27-Electrically controlled telescopic rod;

[0021] 3-Injector;

[0022] 4-Cleaning roller; 41-Roller body; 42-Cleaning sleeve;

[0023] 5-Fixing mechanism; 51-Top plate; 52-Bottom plate; 53-Threaded through hole; 54-Handle; 55-Screw; 56-Pressure block; 57-Support block; 58-Elastic spring;

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This invention proposes a film-forming device for dry-process batteries.

[0031] like Figures 1 to 2 The device shown is a film-forming apparatus for dry-process batteries, comprising a main body and two pressure rollers 1 spaced apart, forming a working gap 11 between them for the material to be extruded. A cleaning mechanism is provided on the side of each pressure roller 1 away from the working gap 11. The cleaning mechanism includes a brush body 2, a sprayer 3, and a cleaning roller 4, arranged sequentially along the rotation direction of the pressure rollers 1. The brush body 2 is used to initially remove impurities from the working surface of the pressure rollers 1; the sprayer 3 is used to spray cleaning fluid onto the working surface of the pressure rollers 1 after the initial impurity removal; and the cleaning roller 4 is used to remove the cleaning fluid from the working surface of the pressure rollers 1 for further cleaning.

[0032] The brush body 2 and the cleaning roller 4 perform dual cleaning. The brush body 2 first removes impurities with low adhesion, and then the cleaning liquid is sprayed through the sprayer 3 so that the cleaning roller 4 can thoroughly clean the pressure roller 1. This ensures that the surface of the pressure roller 1 remains clean when it squeezes the material in the working gap 11, effectively guaranteeing the quality of the subsequent film.

[0033] The brush body 2 includes a brush head 21, a connecting rod 22, a mounting base 23, and a base 24. One end of the connecting rod 22 is connected to the brush head 21, and the other end is connected to the mounting base 23. The base 24 is fixed to the side of the pressure roller 1 away from the working gap 11. The mounting base 23 is hinged to the base 24 via a rotating shaft 25, the axis of which is parallel to the axis of the pressure roller 1. The base 24 is provided with a fixing mechanism 5, which is used to fix the relative positions of the mounting base 23 and the base 24. The mounting base 23 rotates along the rotating shaft 25, thereby adjusting the contact angle between the brush head 21 and the pressure roller 1, so that the operator can adjust the position of the brush head 21 according to the cleaning effect of the brush head 21, to ensure the cleaning effect of the brush body 2 on the pressure roller 1.

[0034] Specifically, the brush head 21 and the connecting rod 22 are connected by a detachable threaded bolt so that the staff can replace the brush head 21.

[0035] The fixing mechanism 5 includes a top plate 51 and a bottom plate 52, which are vertically spaced apart, forming an adjustment space between them. The mounting base 23 is located within the adjustment space. An adjuster is provided on the top plate 51, which drives the connecting base 24. A spring seat is provided on the side of the bottom plate 52 facing the top plate 51, and the spring seat abuts against the mounting base 23. The adjuster and the spring seat limit the adjustment angle of the connecting rod 22 and ensure the firmness of the connecting rod 22 after the adjustment angle, so that the brush head 21 can better clean the pressure roller 1.

[0036] The top plate 51 has a threaded through hole 53 along its thickness. The adjuster includes a handle 54, a screw 55, and a pressure block 56. The handle 54 is located on the side of the top plate 51 away from the adjustment space, and the pressure block 56 is located on the side of the top plate 51 facing the mounting base 23, abutting against the mounting base 23. One end of the screw 55 is connected to the handle 54, and the other end of the screw 55 is threaded to the threaded through hole 53 and extends into the adjustment space to connect to the pressure block 56. The operator rotates the pressure block 56 by rotating the handle 54, causing the pressure block 56 to push the mounting base 23 to rotate along the shaft 25.

[0037] The spring seat includes a support block 57 and a spring spring 58. The support block 57 is located on the side of the base plate 52 facing the mounting base 23. The spring spring 58 is located between the support block 57 and the base plate 52, with one end of the spring spring 58 connected to the support block and the other end connected to the base plate 52. The support block 57, through the elastic force of the spring spring 58, clamps and fixes the mounting base 23 to the pressure block 56.

[0038] Specifically, both the pressure block 56 and the support block 57 are spherical blocks, so that the pressure block 56 and the support block 57 can better clamp the mounting base 23.

[0039] Mounting base 23 has a mounting hole 26 on the side facing brush head 21. An electrically controlled telescopic rod 27 is fixedly installed within the mounting hole 26. The output end of the electrically controlled telescopic rod 27 drives the end of connecting rod 22 away from the brush body 2. The electrically controlled telescopic rod 27, in conjunction with the rotation of mounting base 23, enables more precise adjustment of brush head 21.

[0040] The cleaning mechanism also includes a negative pressure unit (not shown in the figure) and a suction tube 12. One end of the suction tube 12 is connected to the negative pressure unit, and the other end of the suction tube 12 is located near the brush body 2. The end of the suction tube 12 away from the negative pressure unit is located on the side of the brush body 2 away from the sprayer 3. The negative pressure unit uses the suction tube 12 to absorb the impurities brushed up by the brush body 2, preventing the brushed impurities from falling back onto the working surface of the pressure roller 1.

[0041] The cleaning roller 4 includes a roller body 41 and a cleaning sleeve 42, which is detachably fitted onto the side of the roller body 41 facing the working surface of the pressure roller 1. The cleaning sleeve 42 is replaced according to wear and tear during operation to ensure the cleaning effect of the cleaning roller 4 on the pressure roller 1.

[0042] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An apparatus for film formation in dry-process batteries, characterized in that, The device includes a main body comprising two pressure rollers spaced apart, forming a working gap for material to be extruded. A cleaning mechanism is provided on the side of each pressure roller opposite the working gap. The cleaning mechanism includes a brush, a sprayer, and a cleaning roller, arranged sequentially along the rotation direction of the pressure rollers. The brush is used to initially remove impurities from the working surface of the pressure rollers. The sprayer sprays cleaning fluid onto the working surface of the pressure rollers after the initial impurity removal. The cleaning roller removes the cleaning fluid from the working surface of the pressure rollers for further cleaning. The brush body includes a brush head, a connecting rod, a mounting base, and a base. One end of the connecting rod is connected to the brush head, and the other end of the connecting rod is connected to the mounting base. The base is fixed to the side of the pressure roller away from the working gap. The mounting base is hinged to the base via a rotating shaft, the axis of which is parallel to the axis of the pressure roller. The base is provided with a fixing mechanism for fixing the relative position of the mounting base and the base. The fixing mechanism includes a top plate and a bottom plate, which are vertically spaced apart and form an adjustment space between them. The mounting base is located within the adjustment space. An adjuster is provided on the top plate, and the adjuster is driven to connect to the base. A spring seat is provided on the side of the bottom plate facing the top plate, and the spring seat abuts against the mounting base.

2. The film-forming equipment for dry-process batteries according to claim 1, characterized in that, The top plate has a threaded through hole along its thickness; the adjuster includes a handle, a screw, and a pressure block. The handle is located on the side of the top plate away from the adjustment space, and the pressure block is located on the side of the top plate facing the mounting base, abutting against the mounting base; one end of the screw is connected to the handle, and the other end of the screw is threaded to the threaded through hole and extends into the adjustment space to connect to the pressure block.

3. The film-forming equipment for dry-process batteries according to claim 1, characterized in that, The spring seat includes a support block and a spring spring. The support block is located on the side of the base plate facing the mounting base. The spring spring is located between the support block and the base plate. One end of the spring spring is connected to the support block, and the other end of the spring spring is connected to the base plate.

4. A film-forming apparatus for dry-process batteries according to any one of claims 1-3, characterized in that, The mounting base has a mounting hole on the side facing the brush head, and an electrically controlled telescopic rod is fixedly installed in the mounting hole. The output end of the electrically controlled telescopic rod drives and connects to the end of the connecting rod away from the brush body.

5. A film-forming apparatus for dry-process batteries according to any one of claims 1-3, characterized in that, The cleaning mechanism also includes a negative pressure unit and a suction tube. One end of the suction tube is connected to the negative pressure unit, and the other end of the suction tube is located close to the brush body. The end of the suction tube away from the negative pressure unit is located on the side of the brush body opposite to the sprayer.

6. A film-forming apparatus for dry-process batteries according to any one of claims 1-3, characterized in that, The cleaning roller includes a roller body and a cleaning sleeve, wherein the cleaning sleeve is detachably fitted onto the side of the roller body facing the working surface of the pressure roller.

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