Coating treatment device and coating equipment

Abstract

The present application provides a coating treatment device and a coating equipment to solve the problem of low efficiency of heating and drying the coated electrode by the oven. The coating treatment device includes a box, a functional component and a windshield component; the box has an inlet and an outlet; the functional component is rotatably arranged in the box to generate negative pressure in the box; the windshield component is rotatably arranged at the inlet; wherein the windshield component includes two rollers arranged at intervals, a gap is formed between the two rollers, and the gap is used to allow the workpiece to be processed to pass through; the surface of the roller has a plurality of blades arranged along the circumferential direction.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a coating processing device and a coating equipment. Background Art

[0002] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. The battery device can be a power battery, and the battery device can also be an energy storage battery.

[0003] The battery device includes a battery box and a battery cell, wherein the battery cell is installed in the battery box. The battery cell includes a shell and an electrode assembly, wherein the electrode assembly is installed in the shell. The electrode assembly includes an electrode sheet and a separator.

[0004] The electrode pieces are coated and then heated and dried in an oven. However, the existing ovens are less efficient in heating and drying the coated electrode pieces, thereby reducing the production speed of the battery device. Utility Model Content

[0005] The main technical problem solved by the present application is to provide a coating processing device and a coating equipment to solve the problem of low efficiency of the oven in heating and drying the coated electrode.

[0006] In order to solve the above technical problems, the first technical solution adopted in this application is: to provide a coating processing device, the coating processing device includes a box body, a functional component and a wind shield component; the box body has an inlet and an outlet; the functional component is rotatably arranged in the box body, and is used to generate negative pressure in the box body; the wind shield component is rotatably arranged at the inlet; wherein the wind shield component includes two rollers arranged at intervals, and a gap is formed between the two rollers, and the gap is used to allow the workpiece to be processed to pass through; the surface of the roller has a plurality of blades arranged along the circumferential direction.

[0007] In this embodiment, the wind shield assembly is arranged at the entrance, and part of the room air entering the entrance will blow onto the blades, causing the blades and the roller to rotate as a whole, so that the wind shield assembly consumes part of the room air, reducing the amount of room air entering the box body, so that the pressure in the box body remains almost unchanged or slightly increases, thereby improving the efficiency of the drying process of the workpiece to be processed, and then improving the production speed of the workpiece to be processed and the production speed of the battery device.

[0008] In some embodiments, the blade is a flexible structure, or one end of the blade away from the roller is wrapped with a flexible member.

[0009] In this embodiment, the blade is a flexible structure, or the end of the blade away from the roller is wrapped with a flexible member, which reduces the risk of the blade scratching the workpiece to be processed, thereby improving the production yield of the workpiece to be processed.

[0010] In some embodiments, the blade is a flexible structure, and one end of the blade away from the roller has a chamfer.

[0011] In this embodiment, the blade is a flexible structure, which reduces the risk of the blade scratching the workpiece to be processed; the chamfered end of the blade can further reduce the risk of the blade scratching the workpiece to be processed, thereby improving the production yield of the workpiece to be processed.

[0012] In some embodiments, the box body is an oven; the functional component includes a heating component disposed in the box body; and the roller is a porous structure, a vacuum insulation structure, or a heat reflective structure.

[0013] In this embodiment, the workpiece to be processed can be heated by using an oven and a heating assembly. The roller is a porous structure, a vacuum insulation structure or a heat reflection structure, so that the roller has good insulation or heat resistance, thereby reducing the heat exchange efficiency between the heat energy in the oven and the roller, reducing the amount of heat energy in the oven transferred to the outside through the roller, and improving the utilization rate of the oven heat energy, thereby improving the production efficiency of the workpiece to be processed. The wind shielding assembly can consume a part of the room air, reduce the amount of room air entering the box, and make the temperature in the box slightly lower due to the entering room air.

[0014] In some embodiments, the functional component further includes an air extraction component connected to the housing.

[0015] In this embodiment, the workpiece to be processed can be dried by using the exhaust assembly, which can lower the air pressure in the oven, thereby improving the efficiency of liquid volatilization on the surface of the workpiece to be processed, thereby improving the production efficiency of the workpiece to be processed.

[0016] In some embodiments, the coating processing device further includes a magnet and a conductor, wherein the magnet is used to generate a magnetic field; the conductor is connected to a roller; wherein the roller drives the conductor to cut magnetic field lines in the magnetic field and generate electrical energy.

[0017] In this embodiment, the room wind entering the inlet will blow onto the blades, causing the blades and the roller to rotate as a whole. The roller drives the conductor to rotate, causing the conductor to cut the magnetic flux lines, thereby generating electrical energy on the conductor; wind energy is then converted into electrical energy, realizing the secondary utilization of energy.

[0018] In some embodiments, the coating processing device also includes a bracket, which is connected to the roller shaft of the roller and can rotate with the roller; wherein the roller shaft has electrodes at both ends; the electrodes are electrically connected to the conductor through wires; and the electrodes and wires are both arranged on the bracket.

[0019] In this embodiment, the bracket is provided to facilitate the installation of the conductor, and the electrodes are provided to facilitate the connection of the energy storage component and the like.

[0020] In some embodiments, the coating processing device further includes an energy storage component, which is electrically connected to electrodes at both ends of the roller, respectively, and is used to store the electrical energy generated by the conductor.

[0021] In this embodiment, the electrical energy generated by the conductor is transmitted to the energy storage component through the electrode, so that the electrical energy is stored by the energy storage component.

[0022] In some embodiments, the coating processing device also includes an energy storage component, which is used to store the electrical energy generated by the conductor; wherein the roller shaft is a hollow structure, and the energy storage component is arranged inside the roller shaft; the conductor is embedded in the roller or arranged on the side of the roller, and is electrically connected to the energy storage component through a wire.

[0023] In this embodiment, the energy storage assembly can be used to store the electrical energy generated by the conductor. The roller accommodates the energy storage assembly, so that the overall space occupied by the roller and the energy storage assembly is reduced.

[0024] In order to solve the above technical problems, the second technical solution provided by the present application is: to provide a coating device, the coating device includes a coating device and the above coating treatment device, the coating device is used to coat the electrode piece; the coating treatment device is used to dry the coated electrode piece. Since the coating device includes the above coating treatment device, the coating device has the same effect as the above coating treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a structural schematic diagram of the electrical equipment provided by this application;

[0027] Figure 2 is a schematic diagram of the structure of the battery device provided by the present application;

[0028] Figure 3 It is a schematic diagram of the structure of a battery cell provided by the present application;

[0029] Figure 4 It is a front view of a coating processing device provided by the present application;

[0030] Figure 5 It is a structural schematic diagram of a windshield assembly provided by the present application;

[0031] Figure 6 is a structural schematic diagram of another windshield assembly provided by the present application;

[0032] Figure 7 is a cross-sectional view of a roller, a blade, an energy storage assembly and a conductor provided by the present application;

[0033] Figure 8 It is a cross-sectional view of another roller, blade, energy storage assembly and conductor provided by the present application.

[0034] In the figure: 1. battery device; 11. battery case; 111. upper case; 112. lower case; 12. battery cell; 121. connecting member; 122. cover plate; 123. pole; 124. safety valve; 125. electrode assembly; 126. shell; 2. electrical components; 3. coating treatment device; 30. magnet; 31. case; 311. inlet; 312. outlet; 32. functional component; 321. heating component; 322. exhaust component; 33. wind shield component; 331. roller; 332. blade; 333. gap; 34. bracket; 35. conductor; 36. part to be treated; 37. wire; 38. electrode; 39. energy storage component. DETAILED DESCRIPTION

[0035] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0036] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by technicians in this field without making creative work are within the scope of protection of this application.

[0038] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices can be power batteries, which are power sources for tools. Power batteries mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, golf carts and other transportation vehicles, as well as aerospace. Of course, battery devices can also be energy storage batteries, which refer to batteries used to store energy from renewable energy sources such as hydropower, thermal power, wind power and solar power stations. With the continuous expansion of the application fields of battery devices, the market demand is also constantly expanding.

[0041] The battery device includes a battery box and a battery cell, and the battery cell is installed in the battery box. The battery cell includes a shell and an electrode assembly, and the electrode assembly is installed in the shell. The electrode assembly includes a pole piece and a separator. Among them, the pole piece is coated, and the coated pole piece is heated and dried in an oven. However, when the coated pole piece enters the oven from the entrance of the oven for heating and drying, the room wind can also enter the oven from the entrance of the oven. The room wind entering the oven reduces the temperature of the oven and increases the air pressure, so that the efficiency of the oven for heating and drying the coated pole piece is low, thereby reducing the production speed of the coated pole piece and the production speed of the battery device. In addition, not only the oven, but any open box that needs to process the workpiece under negative pressure will have such a problem. The open box here means that the entrance of the box will not be completely closed during the processing process, so that the workpiece to be processed continuously enters the box through the entrance. The treatment here is not limited to heating and drying treatment, but can also be other treatments, such as ultraviolet light, thermal radiation, ion bombardment, etc.

[0042] In order to solve the problem that the existing oven has low efficiency in heating and drying the coated electrode piece, the embodiment of the present application provides a coating treatment device, which includes a box body, a functional component and a windshield component; the box body has an inlet and an outlet; the functional component is rotatably arranged in the box body, used to generate negative pressure in the box body; the windshield component is rotatably arranged at the inlet; wherein the windshield component includes two rollers arranged at intervals, and a gap is formed between the two rollers, and the gap is used to allow the to-be-treated piece to pass through; the surface of the roller has a plurality of blades arranged along the circumferential direction. The present application takes the coating treatment device as a drying device for the electrode piece, and the box body is an oven as an example for explanation. The windshield component is arranged at the inlet, and part of the room wind entering the inlet will blow onto the blades, so that the blades and the rollers rotate as a whole, so that the windshield component consumes part of the room wind, reduces the amount of room wind entering the box body, and makes the pressure in the box body almost unchanged or changes very little, or even negligible, thereby improving the efficiency of the drying treatment of the coated electrode piece, and then improving the production speed of the battery device.

[0043] An embodiment of the present application further provides a coating device, which includes a coating processing device and a coating device, wherein the coating device is used to coat the electrode piece; and the coating processing device is used to dry the coated electrode piece.

[0044] The coating device can coat the surface of the electrode so that a coating layer is formed on the surface of the electrode. The function of the coating layer is different depending on the material of the slurry. For example, when the material of the slurry is an adsorption material, the coating layer is an adsorption layer, which can adsorb ions so that the electrode can store more ions. For another example, when the material of the slurry is a protective material, the coating layer is a protective layer, which can protect the electrode, reduce the reaction speed of the redox reaction of the electrode or make it not react.

[0045] The coating device may include a coating mechanism and a feeding mechanism, wherein the feeding mechanism is configured to deliver slurry to a feeding port of the coating mechanism. In this way, the slurry can be delivered to the feeding port of the coating mechanism by the feeding mechanism, so that the coating mechanism coats the slurry on the electrode piece.

[0046] The feeding mechanism includes a feeding shell, the feeding shell has a feeding cavity, and the cavity wall of the feeding cavity has a feeding inlet and a feeding outlet. The coating mechanism may include a coating head. The coating head has a receiving cavity; the cavity wall of the receiving cavity has a feed inlet and a discharge port. The feeding outlet is docked with the feed inlet of the coating mechanism. In this way, the slurry in the feeding mechanism can be output through the feeding outlet and enter the feed inlet of the coating mechanism; so that the discharge port of the coating head coats the slurry on the pole piece. In some examples, the feeding mechanism also includes a driving mechanism, which can be a spiral feeder, a belt conveyor, etc. At least a portion of the driving mechanism is disposed in the feeding cavity, for conveying the slurry to the feeding outlet. In some examples, the coating mechanism may also include an increasing mechanism, which can be a spiral feeding mechanism. At least a portion of the increasing mechanism is disposed in the receiving cavity, for increasing the flow rate of the slurry in the receiving cavity.

[0047] The coating treatment device may include a drying device, and the drying device may include a drying treatment device and / or a heating treatment device. For example, the coating treatment device performs a heating treatment on the coated electrode sheet and a drying treatment. Among them, the drying treatment refers to a drying treatment and / or a heating treatment. The treated electrode sheet can be wound with the isolation film into an electrode assembly, and the electrode assembly can be assembled with other components into a battery device. The composition of the battery device is first described in detail below.

[0048] See also Figure 1 The battery device 1 can be installed on an electrical device to provide electrical energy to the electrical device; for example, the battery device 1 is electrically connected to an electrical device 2 of the electrical device. The electrical device 2 can be a component or device that can use electricity; the electrical device 2 can be a controller and an electronic component, etc. The controller can be a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0049] Electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. For the convenience of explanation, the following embodiments are described by taking the electric equipment as a vehicle as an example.

[0050] In some examples, the electric device may be a vehicle, and the electric device 2 may be a lamp (such as a headlight, a taillight, etc.), a display screen, a dashboard, a control system (such as a controller), etc. of the vehicle. The electric device may also include other parts, such as a vehicle frame, and the battery device 1 and the electric device 2 are both mounted on the vehicle body.

[0051] See also Figure 2 The battery device 1 may include a battery case 11 and a battery cell 12; the battery case 11 has a chamber, and one or more battery cells 12 are accommodated in the chamber; the battery case 11 may protect the battery cells 12 and facilitate the collection of multiple battery cells 12. In some examples, the battery case 11 may include a lower case 112 and an upper case 111.

[0052] The shape of the battery case 11 can be specifically set as needed; for example, the shape of the battery case 11 can be cylindrical, and the corresponding battery device 1 can be called a round battery; for another example, the shape of the battery case 11 can be rectangular, and the corresponding battery device 1 can be called a rectangular battery.

[0053] The battery cell 12 may be a secondary battery, which refers to a battery cell 12 that can be continuously used by activating active materials by charging after the battery cell 12 is discharged. The battery cell 12 may include, but is not limited to, a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, and the like.

[0054] See also Figure 3The battery cell 12 may include a housing 126, an electrode assembly 125, and a cover plate 122. The housing 126 has a connected cavity and a mounting port. The number of electrode assemblies 125 may be one or more; the electrode assembly 125 is mounted in the cavity of the housing 126. The cover plate 122 is connected to the housing 126 and covers the mounting port. The housing 126 is filled with an electrolyte, such as an electrolyte.

[0055] The electrode assembly 125 may include an anode electrode sheet and a cathode electrode sheet, and a separator disposed between the anode electrode sheet and the cathode electrode sheet. During the charge and discharge process of the battery cell 12, active ions (such as lithium ions) are inserted and removed back and forth between the anode electrode sheet and the cathode electrode sheet. The separator can prevent the anode electrode sheet and the cathode electrode sheet from short-circuiting to a certain extent, and can allow active ions to pass through.

[0056] The battery cell 12 may also include a safety valve 124 (also referred to as a pressure relief valve), two poles 123 and two connecting members 121 (also referred to as current collecting members). The safety valve 124 may be provided on the cover plate 122, for example, the safety valve 124 is fixed on the cover plate 122, and the safety valve 124 is used to actuate when the internal pressure or temperature of the battery cell 12 reaches a threshold value to discharge the internal electrolyte to reduce the internal pressure or temperature of the battery cell 12. For example, the safety valve 124 may be a temperature-sensitive valve, a pressure-sensitive valve, etc. Two poles 123 may be provided on the cover plate 122, and the two poles 123 are respectively a positive pole 123 and a negative pole 123, and one pole 123 is connected to one connecting member 121 accordingly. The connecting member 121 is located between the cover plate 122 and the electrode assembly 125, and is used to electrically connect the electrode assembly 125 and the pole 123. The shell 126 is a hollow structure, and the material of the shell 126 can be metal or plastic; for example, the material of the shell 126 can be copper, iron, aluminum, steel, aluminum alloy, etc.

[0057] The embodiment of the present application provides a coating processing device, see Figure 4 and Figure 5 The coating processing device 3 includes a box body 31, a functional component 32 and a wind shield component 33; the box body 31 has an inlet 311 and an outlet 312; the functional component 32 is rotatably arranged on the box body 31, and is used to generate negative pressure in the box body 31; the wind shield component 33 is rotatably arranged at the inlet 311; wherein the wind shield component 33 includes two rollers 331 arranged at an interval, and a gap 333 is formed between the two rollers 331, and the gap 333 is used to allow the workpiece 36 to pass through; the surface of the roller 331 has a plurality of blades 332 arranged along the circumferential direction.

[0058] In this embodiment, the coating processing device is a drying device for electrode pieces, the box body 31 is an oven, and the workpiece 36 to be processed is an electrode piece after coating.

[0059] In some examples, a gap 333 is formed between outer sides of the two rollers 331 , and the outer sides of the rollers 331 have a plurality of blades 332 arranged in a circumferential direction.

[0060] The box body 31 may be an object having an inner space, which may be mounted on a mounting table or a bracket.

[0061] The functional component 32 may be a type of device capable of processing the workpiece to be processed; and when the functional component 32 processes the workpiece to be processed, it can cause the box 31 to generate negative pressure, that is, the pressure inside the box 31 is less than the pressure outside the box 31; so that the wind outside the box 31 (i.e., the room wind) can enter the box 31 from the inlet 311. Among them, the workpiece 36 to be processed enters the box 31 from the inlet 311 of the box 31, and after being processed by the functional component 32, it comes out from the outlet 312 of the box 31 and enters the next process. In some examples, the functional component 32 may include a heating component 321, and when the heating component 321 is heated, the temperature inside the box 31 increases, so that the heating component 321 heats the workpiece 36 to be processed; at the same time, the temperature inside the box 31 is higher than the temperature outside the box 31, so that negative pressure is generated inside the box 31. The heating component 321 may be a type of element capable of heating, and the heating component 321 may be a heating wire, a heating rod, etc. For example, the heating component 321 can be installed entirely in the box 31. For another example, part of the heating component 321 is located in the box 31, and the other part is located outside the box 31; wherein the heating component 321 located outside the box 31 can be fixedly connected to the box 31, or can be fixedly connected to other structures. In other examples, the functional component 32 may include an exhaust component 322, which extracts gas in the box 31, so that negative pressure is generated in the box 31, thereby drying the workpiece 36 under negative pressure. The exhaust component 322 is a type of device that can extract gas, such as an exhaust pump. The exhaust port of the exhaust component 322 is connected to the box 31, and the exhaust port is located outside the box 31. For example, the exhaust component 322 can be installed outside the box 31. In other examples, the functional component 32 may include the above-mentioned heating component 321 and the above-mentioned exhaust component 322. In other examples, the functional component 32 may include the above-mentioned heating component 321 and the above-mentioned exhaust component 322, and the heating component 321 and the exhaust component 322 may cooperate to process the part to be processed 36. Of course, the functional component 32 is not limited to the above-mentioned situation. For example, the functional component 32 may also include a negative pressure component and a processing component. For example, the processing component may be an ultraviolet irradiation component or an ion bombardment component, and the negative pressure component may be an exhaust pump. Among them, the part to be processed 36 may be a sheet structure of the battery device 1, for example, the part to be processed 36 is a coated pole piece, or may be an isolation film, a protective layer, etc.

[0062] For example, the part to be processed 36 may be a coated electrode; the functional component 32 may include the above-mentioned heating component 321 and the above-mentioned exhaust component 322, the heating component 321 increases the temperature inside the box 31, thereby heating the coated electrode and forming a negative pressure inside the box 31; the exhaust component 322 sucks the gas in the box 31, thereby drying the coated electrode and making the air pressure in the box 31 lower; the coated electrode enters the box 31 from the inlet 311 of the box 31, and the coated electrode is processed by the cooperation of the heating component 321 and the exhaust component 322, so that the heating component 321 and the exhaust component 322 heat and dry the coated electrode, so that the coating layer is quickly fixed on the electrode.

[0063] The inlet 311 and the outlet 312 are adapted to the workpiece 36 to be processed, so the inlet 311 and the outlet 312 can be designed according to the shape of the workpiece 36 to be processed. For example, the workpiece 36 to be processed is in the form of a sheet, and the inlet 311 and the outlet 312 are flat openings; for another example, the workpiece 36 to be processed is in the form of a block, and the inlet 311 and the outlet 312 are rectangular openings. This article takes the workpiece 36 to be processed as a coated electrode, and the inlet 311 and the outlet 312 are both flat openings as an example for explanation.

[0064] The wind shielding assembly 33 is rotatably disposed at the inlet 311 . It can be understood that the wind shielding assembly 33 is located outside the inlet 311 or inside the inlet 311 , and the wind shielding assembly 33 can rotate relative to the box body 31 .

[0065] In some examples, the wind shield assembly 33 is located outside the inlet 311, that is, outside the box 31 and close to the inlet 311. When the workpiece 36 needs to be processed, the workpiece 36 first passes through the gap 333, then enters the box 31 from the inlet 311, and is processed by the functional assembly 32. After the workpiece 36 is processed, it comes out from the outlet 312. In other examples, the wind shield assembly 33 is located inside the inlet 311. When the workpiece 36 needs to be processed, the workpiece 36 enters the box 31, and is processed by the functional assembly 32. After the workpiece 36 is processed, it comes out from the outlet 312.

[0066] The wind shield assembly 33 is rotatably disposed on the box body 31 , or the wind shield assembly 33 is rotatably disposed on a mounting platform or a bracket, both of which enable the wind shield assembly 33 to rotate relative to the box body 31 .

[0067] Here, the gap 333 between the outer sides of the two rollers 331 is relatively large, and even if the rollers 331 are provided with blades 332, the workpiece 36 to be processed can pass through the gap 333. For example, the blades 332 are flexible structures, and the workpiece 36 to be processed may or may not be in contact with the blades 332. For another example, the blades 332 are rigid structures, and the workpiece 36 to be processed does not contact with the blades 332.

[0068] The blade 332 may be a sheet with a certain hardness, and its material is not limited. The length of the blade 332 may be equal to the length of the roller 331. When the blades 332 of the two rollers 331 are coplanar, the ends of the blades 332 may be in contact or have a certain gap 333, which is specifically designed according to the thickness of the workpiece 36 to be processed and whether the workpiece 36 to be processed is easily scratched by the blade 332.

[0069] Room wind can be understood as the air outside the box body 31 or the like.

[0070] In this embodiment, the wind shield assembly 33 is arranged at the inlet 311, and part of the room air entering the inlet 311 will blow onto the blade 332, causing the blade 332 and the roller 331 to rotate as a whole, so that the wind shield assembly 33 consumes part of the room air, reducing the amount of room air entering the box body 31, so that the pressure in the box body 31 remains almost unchanged or changes very little, and can even be ignored, thereby improving the efficiency of the drying process of the workpiece 36 to be processed, and then improving the production speed of the workpiece 36 to be processed and the production speed of the battery device 1.

[0071] In some embodiments, the blade 332 is a flexible structure, or one end of the blade 332 away from the roller 331 is wrapped with a flexible member.

[0072] The material of the flexible structure is a flexible material, and the material of the flexible part is a flexible material. The flexible material may be polyvinyl alcohol, polyimide, polymer film, etc.

[0073] In this embodiment, the blade 332 is a flexible structure, or the end of the blade 332 away from the roller 331 is wrapped with a flexible member, which reduces the risk of the blade 332 scratching the workpiece 36 to be processed, thereby improving the production yield of the workpiece 36 to be processed of the battery device 1.

[0074] In some embodiments, the blade 332 is a flexible structure, and one end of the blade 332 away from the roller 331 has a chamfer.

[0075] The material of the flexible structure is a flexible material, and the flexible material may be polyvinyl alcohol, polyimide, a polymer film, etc. The chamfer may be a rounded corner.

[0076] In this embodiment, the blade 332 is a flexible structure, which reduces the risk of the blade 332 scratching the workpiece 36 to be processed; the chamfered end of the blade 332 can further reduce the risk of the blade 332 scratching the workpiece 36 to be processed; thereby improving the production yield of the workpiece 36 to be processed of the battery device 1.

[0077] In some embodiments, the box body 31 is an oven; the functional component 32 includes a heating component 321 disposed in the box body 31; and the roller 331 is a porous structure, a vacuum insulation structure, or a heat reflection structure.

[0078] When heating, the heating assembly 321 increases the temperature in the oven and forms a negative pressure in the oven.

[0079] In some examples, the material of the roller 331 is a non-porous material, and a plurality of through holes are formed on the outer surface of the roller 331, so that the roller 331 has a porous structure. In other examples, the material of the roller 331 is a porous material, for example, the porous material is a porous matrix, and the porous matrix can be a ceramic porous matrix, so that the roller 331 has a through-hole structure.

[0080] The vacuum insulation structure can be understood as a cavity being provided inside the roller 331, and the roller 331 being an insulation structure. The material of the insulation structure is an insulation material; the insulation material can be an organic insulation material or an inorganic insulation material. The organic insulation material can be foam plastics such as polystyrene foam, polyurethane foam, and polyvinyl chloride foam. The inorganic insulation material can be mineral wool such as rock wool and glass wool, as well as ceramic fiber, etc.

[0081] The material of the heat reflective structure is a heat reflective material, and the heat reflective material can be a metal film, a multi-layer heat insulation material, a nano heat insulation material, etc.

[0082] In this embodiment, the workpiece to be processed can be heated by using the oven and the heating assembly 321. The roller 331 is a porous structure, a vacuum insulation structure or a heat reflection structure, so that the roller 331 has good insulation or heat resistance, thereby reducing the heat exchange efficiency between the heat energy in the oven and the roller 331, reducing the amount of heat energy in the oven transferred to the outside through the roller 331, and improving the utilization rate of the oven heat energy, thereby improving the production efficiency of the workpiece 36 to be processed of the battery device 1. The wind shielding assembly 33 consumes a part of the room air, reduces the amount of room air entering the box 31, and makes the temperature in the box 31 slightly lower due to the entering room air.

[0083] In some embodiments, the functional component 32 further includes an air extraction component 322 connected to the box body 31 .

[0084] The air extraction component 322 may be an air extraction pump. The air inlet of the air extraction component 322 is connected to the oven, and the air outlet of the air extraction component 322 is located outside the oven. In some examples, the air extraction component 322 is located outside the oven.

[0085] In this embodiment, the exhaust assembly 322 can be used to dry the workpiece 36. The exhaust assembly 322 can lower the air pressure in the oven, thereby improving the efficiency of evaporating the liquid on the surface of the workpiece 36, thereby improving the production efficiency of the workpiece 36 of the battery device 1.

[0086] The wind shielding assembly 33 is located outside the box body 31. Thus, the wind shielding assembly 33 can achieve the function of blocking the indoor wind without changing the structure of the box body 31.

[0087] In some embodiments, see Figure 4~Figure 6 The coating processing device 3 also includes a magnet 30 and a conductor 35. The magnet 30 is used to generate a magnetic field; the conductor 35 is connected to a roller 331; wherein the roller 331 drives the conductor 35 to cut the magnetic field lines in the magnetic field and generate electrical energy.

[0088] The magnet 30 may be a structure that can automatically generate a magnetic field, for example, the magnet 30 may be a magnet, such as a permanent magnet. The material of the conductor 35 may be a metal, for example, a metal element or a metal alloy.

[0089] The conductor 35 can move in the magnetic field to cut the magnetic flux lines to generate electrical energy. The conductor 35 can be electrically connected to the energy storage component 39 so that the energy storage component 39 stores the electrical energy generated by the conductor 35. The conductor 35 can also be electrically connected to the electronic device to provide electrical energy to the electronic device so that the electronic device can work.

[0090] In this embodiment, the room wind entering the inlet 311 will blow onto the blades 332, causing the blades 332 and the roller 331 to rotate as a whole. The roller 331 drives the conductor 35 to rotate, causing the conductor 35 to cut the magnetic flux lines, thereby generating electrical energy on the conductor 35; wind energy is then converted into electrical energy, achieving secondary utilization of energy.

[0091] In some embodiments, the coating processing device 3 also includes a bracket 34, which is connected to the roller 331 shaft of the roller 331 and can rotate with the roller 331; wherein, electrodes 38 are provided at both ends of the roller 331 shaft; the electrode 38 is electrically connected to the conductor 35 through the wire 37; the electrode 38 and the wire 37 are both arranged on the bracket 34.

[0092] The roller 331 has electrodes 38 at both ends of the shaft, and the two electrodes 38 may be a positive electrode and a negative electrode. The electrodes 38 may be electrically connected to the energy storage component 39 or may be connected to an electronic device.

[0093] The bracket 34 and the roller 331 can be fixedly connected or detachably connected. The material of the bracket 34 can be an insulating material; of course, the material of the bracket 34 can also be a conductive material, but the outside of the bracket 34 is wrapped with an insulating layer. The shape of the bracket 34 can be straight, bent, etc.

[0094] In this embodiment, the bracket 34 is provided to facilitate the installation of the conductor 35. The electrode 38 is provided to facilitate the connection of the energy storage component 39 and the like.

[0095] In some embodiments, the coating processing device 3 further includes an energy storage component 39 , which is electrically connected to electrodes 38 at both ends of the roller 331 shaft, respectively, and is used to store the electric energy generated by the conductor 35 .

[0096] In some examples, the coating treatment device 3 further includes an electronic device, for example, the electronic device can be connected to the energy storage component 39, so that the energy storage component 39 provides electrical energy to the electronic device. For another example, the electronic device is connected in parallel with the energy storage component 39, so that part of the electrical energy generated by the conductor 35 is stored in the energy storage component 39, and the other part provides electrical energy to the electronic device. The energy storage component 39 can be a secondary rechargeable battery, for example, a storage battery. The electronic device can be a light bulb, etc.

[0097] In this embodiment, the electric energy generated by the conductor 35 is transmitted to the energy storage component 39 through the electrode 38 , so that the electric energy is stored in the energy storage component 39 .

[0098] In some embodiments, see Figure 7 and Figure 8 The coating processing device 3 also includes an energy storage component 39, which is used to store the electric energy generated by the conductor 35; wherein the roller 331 shaft is a hollow structure, and the energy storage component 39 is arranged in the roller 331 shaft; the conductor 35 is embedded in the roller 331 or arranged on the side of the roller 331, and is electrically connected to the energy storage component 39 through the wire 37.

[0099] Figure 7 and Figure 8 The difference is that the position of the conductor 35 is different. Figure 7 The middle conductor 35 is located inside the roller 331. Figure 8 The middle conductor 35 is located outside the roller 331. The energy storage assembly 39 and the conductor 35 can be fixed on the roller 331 directly or through a connecting piece.

[0100] In this embodiment, the electric energy generated by the conductor 35 can be stored by the energy storage assembly 39. The roller 331 accommodates the energy storage assembly 39, so that the overall occupied space of the roller 331 and the energy storage assembly 39 is reduced.

[0101] The above description is only an implementation method of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A coating treatment device, characterized in that: include: a box having an inlet and an outlet; A functional component, disposed in the box, for generating negative pressure in the box; A windshield assembly, rotatably disposed at the inlet; The wind shield assembly comprises two rollers arranged at an interval, with a gap formed between the two rollers, and the gap is used to allow the workpiece to be processed to pass through; the surface of the roller has a plurality of blades arranged along the circumferential direction.

2. The coating treatment device according to claim 1, characterized in that: The blade is a flexible structure, or one end of the blade away from the roller is wrapped with a flexible member.

3. The coating treatment device according to claim 2, characterized in that: The blade is a flexible structure, and one end of the blade away from the roller has a chamfer.

4. The coating treatment device according to claim 1, characterized in that: The box body is an oven; the functional component includes a heating component arranged in the box body; The roller is a porous structure, a vacuum insulation structure or a heat reflection structure.

5. The coating treatment device according to claim 4, characterized in that: The functional component also includes an air extraction component connected to the box body.

6. The coating treatment device according to any one of claims 1 to 5, characterized in that: Also includes: A magnet for generating a magnetic field; a conductor connected to the roller; The roller drives the conductor to cut the magnetic field lines in the magnetic field and generate electrical energy.

7. The coating treatment device according to claim 6, characterized in that: Also includes: A bracket, connected to the roller shaft of the roller and capable of rotating with the roller; Wherein, the roller has electrodes at both ends; The electrode is electrically connected to the conductor via a wire; the electrode and the wire are both arranged on the bracket.

8. The coating treatment device according to claim 7, characterized in that: Also includes: The energy storage assembly is electrically connected to the electrodes at both ends of the roller shaft and is used to store the electric energy generated by the conductor.

9. The coating treatment device according to claim 6, characterized in that: Also includes: An energy storage component, used to store the electric energy generated by the conductor; Wherein, the roller shaft is a hollow structure, and the energy storage component is arranged inside the roller shaft; The conductor is embedded in the roller or arranged on the side of the roller, and is electrically connected to the energy storage component through a wire.

10. A coating device, characterized in that: include: A coating device, used for coating the pole piece; A coating processing device according to any one of claims 1 to 9; wherein the coating processing device is used to dry the electrode after coating.

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