Drying device and battery production system

Abstract

The embodiment of the utility model provides a drying device and a battery production system, and relates to the technical field of batteries. The drying device comprises a box body, a first drying assembly and a second drying assembly, the box body comprises a first cavity and a second cavity which are connected in a stacked mode, and the first drying assembly is installed in the first cavity and used for drying a coating on the first surface; the second drying assembly is installed in the second cavity and used for drying the coating on the second surface. According to the drying device, the box body originally extending in one direction is designed to be of a stacked structure, the occupied area needed by the drying device is reduced, the space utilization rate in a plant is increased, and meanwhile the effect of drying the first surface and the second surface of the base material can be achieved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a drying device and a battery production system. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] During the battery production process, a drying device is required to dry the coating on substrates such as battery cell electrodes. The existing drying device occupies a large area, which reduces the space utilization rate in the factory. Therefore, how to reduce the area occupied by the drying device is a research direction in battery production and processing technology. Utility Model Content

[0004] The present application provides a drying device and a battery production system, which can reduce the floor space occupied by the drying device.

[0005] In the first aspect, the embodiment of the present application provides a drying device for drying a substrate with a coating, wherein the substrate has a first surface and a second surface opposite to each other, and the drying device includes a housing, a first drying component, and a second drying component, wherein the housing includes a first chamber and a second chamber connected in a stacked manner; the first drying component is installed in the first chamber and is used to dry the coating on the first surface; the second drying component is installed in the second chamber and is used to dry the coating on the second surface. The present application designs the housing, which originally extends in one direction, into a stacked structure, which reduces the floor space required for the drying device and improves the space utilization rate in the factory, while also being able to dry the first surface and the second surface of the substrate.

[0006] In some embodiments of the present application, a plurality of sub-cavities arranged along a first direction are provided in both the first chamber and the second chamber, the first direction being the arrangement direction of the first chamber and the second chamber, at least one of the first drying components is installed in each of the sub-cavities in the first chamber, and at least one of the second drying components is installed in each of the sub-cavities in the second chamber. By designing both the first chamber and the second chamber to have a plurality of sub-cavities, the first surface of the substrate can be dried in each of the sub-cavities in the first chamber, and the second surface can be dried in each of the sub-cavities in the second chamber, so that the drying components originally arranged in the extension direction of the box can be arranged in the first direction, thereby reducing the extension length of the box, and further reducing the floor space required for the drying device.

[0007] In some embodiments of the present application, the drying device further comprises a steering assembly, which is disposed between two adjacent sub-cavities and is used to transfer the substrate in one of the sub-cavities to another adjacent sub-cavity. The substrate is transferred between two adjacent sub-cavities by steering the substrate through the steering assembly.

[0008] In some embodiments of the present application, the multiple sub-cavities located in the first chamber include a first sub-cavity and a second sub-cavity, and the first sub-cavity and the second sub-cavity are both equipped with the first drying component; and / or, the multiple sub-cavities located in the first chamber include a third sub-cavity and a fourth sub-cavity, and the second drying component is both equipped with the third sub-cavity and the fourth sub-cavity. The present application dries the first surface of the substrate by stacking the first sub-cavity and the second sub-cavity, and dries the second surface of the substrate by stacking the third sub-cavity and the fourth sub-cavity, which can reduce the extension length of the box and the floor space required for the drying device while meeting the drying requirements.

[0009] In some embodiments of the present application, the multiple sub-cavities located in the first chamber include a fifth sub-cavity, the first sub-cavity, the second sub-cavity and the fifth sub-cavity are arranged in sequence along the first direction, and the first drying component is installed in the fifth sub-cavity; the multiple sub-cavities located in the second chamber also include a sixth sub-cavity, the third sub-cavity, the fourth sub-cavity and the sixth sub-cavity are arranged in sequence along the first direction, and the second drying component is installed in the sixth sub-cavity. The present application dries the first surface of the substrate by stacking the first sub-chamber, the second sub-chamber and the fifth sub-chamber, and dries the second surface by stacking the third sub-chamber, the fourth sub-chamber and the sixth sub-chamber, which can not only further reduce the extension length of the box and reduce the floor space required for the drying device, but also the first chamber and the second chamber each have three sub-chambers, and the substrate can enter from one end of the first sub-chamber, extend from the other end of the first sub-chamber and then enter one end of the second sub-chamber, then extend from the other end of the second sub-chamber to enter one end of the fifth sub-chamber, then extend from the other end of the fifth sub-chamber to enter one end of the third sub-chamber, then turn from the other end of the third sub-chamber to enter one end of the fourth sub-chamber, then enter one end of the sixth sub-chamber from the other end of the fourth sub-chamber, and finally extend from the other end of the sixth sub-chamber and be rolled up. In this way, the unwinding and winding of the substrate can be set on the same side of the box, which is convenient for the winding and unwinding of the substrate and the transportation of the substrate between the first chamber and the second chamber.

[0010] In some embodiments of the present application, a first adsorbent disposed opposite to the first drying component in the first direction is provided in the second sub-cavity, and the first adsorbent is used for negative pressure adsorption of a substrate located between the first drying component and the first adsorbent; and / or, a second adsorbent disposed opposite to the second drying component in the first direction is provided in the fourth sub-cavity, and the second adsorbent is used for negative pressure adsorption of a substrate located between the second drying component and the second adsorbent. The present application uses the first adsorbent to negatively pressure adsorb the substrate located between the first drying component and the first adsorbent, thereby reducing the possibility of the substrate falling onto the first drying component under the action of gravity, which is beneficial for the substrate to remain in a suspended state and reduce the risk of adhesion between the substrate and the first drying component. Similarly, the second adsorbent is used to negatively pressure adsorb the substrate located between the second drying component and the second adsorbent, thereby reducing the possibility of the substrate falling onto the second drying component under the action of gravity, which is beneficial for the substrate to remain in a suspended state and reduce the risk of adhesion between the substrate and the second drying component.

[0011] In some embodiments of the present application, the drying device further comprises a first conveying assembly, each of the sub-cavities is equipped with the first conveying assembly, and the first conveying assembly is used to convey the substrate. By configuring the first conveying assembly, the substrate is easily transported in the sub-cavity.

[0012] In some embodiments of the present application, the drying device further includes an air inlet assembly, which is at least partially disposed in the housing and is respectively connected to the first drying assembly and the second drying assembly. By disposing the air inlet assembly in the housing, the space of the drying device in the width direction can be reduced to a certain extent, further reducing the floor space required for the drying device and improving the space utilization rate of the plant.

[0013] In some embodiments of the present application, along a second direction intersecting the first direction, the housing includes a first area and a second area arranged in sequence and separated from each other, the first chamber and the second chamber are arranged in the first area, and the air intake assembly is arranged in the second area. By designing the housing as the separated first area and the second area, the possibility of interference with the first drying assembly and the second drying assembly after the air intake assembly structure is installed is reduced.

[0014] In some embodiments of the present application, the first drying component includes an air inlet mechanism, an air outlet mechanism and an air return mechanism, the air inlet mechanism is connected to the air outlet mechanism, the air outlet mechanism is used to dry the substrate, and the air return mechanism is used to transport the airflow in the first chamber to the air inlet mechanism. The air inlet mechanism supplies air to the air outlet mechanism, and the air return mechanism supplies air to the air inlet mechanism, thereby realizing the circulation of airflow.

[0015] In some embodiments of the present application, along the first direction, the air inlet mechanism includes a first mounting surface and a second mounting surface opposite to each other, and along the second direction intersecting the first direction, the air inlet mechanism includes a first end and a second end opposite to each other; the first end is provided with an air inlet, the return air mechanism is installed on the first mounting surface and located at the second end, and the air outlet mechanism is installed on the second mounting surface. The airflow enters the air inlet mechanism through the air inlet, is then discharged through the air outlet mechanism, enters the return air mechanism, and returns to the air inlet mechanism again through the return air mechanism, forming an airflow cycle.

[0016] In some embodiments of the present application, the first mounting surface is provided with a return air port, the return air port extends from the second end to the first end, and is at least partially located between the air inlet and the air outlet mechanism. By providing the return air port, part of the airflow discharged from the air outlet mechanism can enter the return air mechanism through the return air port after the substrate is dried, which can increase the air volume entering the return air mechanism, thereby improving the return air efficiency.

[0017] In some embodiments of the present application, the drying device further comprises a second conveying assembly, which turns over and conveys the substrate in the first chamber to the second chamber. By configuring the second conveying assembly, it is convenient for the substrate to enter the second chamber from the first chamber.

[0018] In some embodiments of the present application, the box body is provided with at least one first opening, the first opening is connected to two adjacent sub-cavities, and a first door body for opening and closing the first opening is installed on the box body. By connecting two sub-cavities through one first opening, components in the two sub-cavities can be inspected and maintained at the same time.

[0019] In a second aspect, an embodiment of the present application provides a battery production system, comprising a drying device as described in the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a drying device provided in some embodiments of the present application;

[0022] Figure 2 A schematic diagram of the internal structure of a drying device provided in some embodiments of the present application at a first viewing angle;

[0023] Figure 3 for Figure 2A magnified view of part a;

[0024] Figure 4 A schematic diagram of the internal structure of a drying device provided in some embodiments of the present application at a second viewing angle;

[0025] Figure 5 A schematic structural diagram of a first drying component provided in some embodiments of the present application.

[0026] The reference numerals of the specific embodiments are as follows:

[0027] 100. Drying device;

[0028] 10. Box; 11. First chamber; 12. Second chamber; 13. Sub-chamber; 131. First sub-chamber; 132. Second sub-chamber; 133. Third sub-chamber; 134. Fourth sub-chamber; 135. Fifth sub-chamber; 136. Sixth sub-chamber; 20. Steering assembly; 30. First drying assembly; 31. Air inlet mechanism; 311. First mounting surface; 3111. Air return port; 312. Second mounting surface; 313, first end; 3131, air inlet; 314, second end; 32, air outlet mechanism; 33, air return mechanism; 331, air baffle; 40, second drying assembly; 14, first area; 15, second area; 16, first door body; 17, second door body; 50, first adsorption member; 60, second adsorption member; 70, air inlet assembly; 71, air inlet pipe; 80, first conveying assembly; 90, second conveying assembly;

[0029] 200, substrate; 210, first surface; 220, second surface; 300, unwinding device; 400, winding device;

[0030] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0033] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places 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.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0037] The term "plurality" used in the present application refers to two or more (including two).

[0038] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a battery box for encapsulating one or more battery cells. The battery box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0039] The battery cells mentioned in the embodiments of the present application may be lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., which are not limited in the embodiments of the present application. The battery cells may be cylindrical, flat, cuboid or other shapes, which are not limited in the embodiments of the present application.

[0040] The battery cell mentioned in the embodiments of the present application may include an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer, and the positive active material layer is coated on the surface of the positive current collector; the positive current collector includes a positive electrode coating area and a positive electrode ear connected to the positive electrode coating area, the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode ear is not coated with a positive electrode active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0041] The battery cells described in the embodiments of the present application are suitable for batteries and electrical devices using batteries. Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, 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. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0042] Below, the embodiments of the present application are described in detail.

[0043] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0044] During the production of batteries, a coating process is required, in which an active material layer is coated on the coating area of ​​the current collector to form a positive electrode sheet or a negative electrode sheet. In the related art, after the current collector coating process, the active material layer coated on the current collector needs to be dried by a drying device such as an oven. A drying structure is provided in the upper or lower layer of the oven cavity. To meet the drying requirements, the oven needs to have a certain extension length in the horizontal direction, resulting in a large device volume. This causes the oven as a whole to occupy at least one large space in the horizontal direction of the factory building, reducing the space utilization rate of the factory building.

[0045] Therefore, how to reduce the volume of the drying device is an important issue in battery production and processing.

[0046] In view of this, the present application provides a technical solution, which designs the oven to have multiple sub-cavities with stacked structures, and the turning assembly allows the substrate to pass through the multiple sub-cavities in sequence, so that the originally single-layer drying device becomes a multi-layer in the vertical direction. The extension length of the oven can be reduced, the volume of the oven can be reduced, and the space utilization rate of the factory building can be improved. At the same time, the oven is designed to have two upper and lower box structures. The two boxes can respectively perform drying operations on the two surfaces of the substrate, which can improve the drying efficiency.

[0047] The following is combined with Figure 1-4The drying device according to the embodiment of the present application is described.

[0048] Combined with Figure 1 , Attachment Figure 2 And attached Figure 3 As shown in the figure, this embodiment provides a drying device 100 for drying a substrate 200 having a coating, the substrate 200 having a first surface 210 and a second surface 220 opposite to each other, the drying device 100 includes a housing 10, a first drying component 30 and a second drying component 40, the housing 10 includes a first chamber 11 and a second chamber 12 stacked and connected, the first drying component 30 is installed in the first chamber 11, and is used to dry the coating on the first surface 210; the second drying component 40 is installed in the second chamber 12, and is used to dry the coating on the second surface 220.

[0049] The substrate 200 mentioned in this embodiment may be a current collector for making a battery pole piece, and the coating applied on the substrate 200 may be an active material for forming the polarity of the battery. When drying, the substrate 200 is arranged in a roll at one end of the box 10, and then the substrate 200 is unwound and rewound by the unwinding device 300 and the rewinding device 400.

[0050] The box body 10 of this embodiment may be in the shape of a rectangular box body 10 as shown in the figure. After the box body 10 is installed in the factory, its extension direction (second direction Y) is set in the horizontal direction, and the arrangement direction (first direction X) of the first chamber 11 and the second chamber 12 is the vertical direction.

[0051] The first chamber 11 and the second chamber 12 of the present embodiment are both solid structures having surrounding side walls and top and bottom walls. The interiors of the first chamber 11 and the second chamber 12 are separated into the above-mentioned first sub-cavity 131 and second sub-cavity 132 by structures such as partitions.

[0052] The first chamber 11 and the second chamber 12 have the same or similar structures, and the two chambers may differ only in function. For example, the first chamber 11 is used to dry the first surface 210 of the substrate 200, and the second chamber 12 is used to dry the second surface 220 of the substrate 200. The first chamber 11 and the second chamber 12 may be integrally formed or integrally connected, and the two chambers may be completely isolated or partially isolated. In addition, the bottom plate of the first chamber 11 may serve as the top plate of the second chamber 12, or the bottom plate of the first chamber 11 and the top plate of the second chamber 12 may be an integral structure.

[0053] In some examples, optionally, the first chamber 11 and the second chamber 12 are both provided with a plurality of sub-cavities 13 arranged along a first direction X, and the first direction X is the arrangement direction of the first chamber 11 and the second chamber 12; at least one first drying component 30 is installed in each sub-cavity 13 in the first chamber 11, and at least one second drying component 40 is installed in each sub-cavity 13 in the second chamber 12.

[0054] In some examples, optionally, the drying device 100 further includes a diverting assembly 20 , which is disposed between two adjacent sub-cavities 13 and is used to divert the substrate 200 in one of the sub-cavities 13 to another adjacent sub-cavity 13 .

[0055] In the extension direction of the box body 10 (the third direction Z), the sub-cavities 13 formed in the first chamber 11 and the second chamber 12 are both open structures at both ends to facilitate the entry and exit and extension of the substrate 200. The multiple sub-cavities 13 form a stacked structure, and the substrate 200 is driven to be diverted and transported between the multiple sub-cavities 13 of the first chamber 11 and the multiple sub-cavities 13 of the second chamber 12 through the steering assembly 20 between two adjacent sub-cavities 13. While reducing the floor space required for the drying device 100 and improving the space utilization rate in the factory, it can also achieve the effect of drying the first surface 210 and the second surface 220 of the substrate 200.

[0056] In some examples, optionally, the multiple sub-cavities 13 located in the first chamber 11 include a first sub-cavity 131 and a second sub-cavity 132, and the first sub-cavity 131 and the second sub-cavity 132 are both equipped with a first drying component 30; and / or, the multiple sub-cavities 13 located in the second chamber 12 include a third sub-cavity 133 and a fourth sub-cavity 134, and the third sub-cavity 133 and the fourth sub-cavity 134 are both equipped with a second drying component 40.

[0057] The present application dries the first surface 210 of the substrate 200 by means of the stacked first sub-cavity 131 and the second sub-cavity 132, and dries the second surface 220 of the substrate 200 by means of the stacked third sub-cavity 133 and the fourth sub-cavity 134. While meeting the drying requirements, the extended length of the box 10 can be reduced, and the floor space required for the drying device 100 can be reduced.

[0058] When only the first sub-chamber 131, the second sub-chamber 132, the third sub-chamber 133 and the fourth sub-chamber 134 are used for drying (this embodiment is not shown in the figure), the unwinding device 300 inputs the substrate 200 from one end of the first sub-chamber 131 in the third direction Z into the first sub-chamber 131, and the first surface 210 is dried in the first sub-chamber 131 by the first drying assembly 30, at which time the first drying assembly 30 is located above the substrate 200, and the first surface 210 is located on the upper layer of the substrate 200. Then the substrate 200 is transported to the second sub-chamber 132 by a steering assembly 20 on the right side, at which time the first surface 210 is turned to the lower layer of the substrate 200, and the second drying assembly 40 is located in the lower direction of the substrate 200, and dries the first surface 210 of the lower layer. The substrate 200 is then turned to the right again by a steering assembly 20 for output, and then enters from the right side of the second sub-chamber 132. Another steering assembly 20 is used to turn the substrate 200 to the left side of the top first sub-chamber 131 for drying, and finally is wound up by the right side of the first sub-chamber 131 through the winding device 400.

[0059] Although this method can achieve two dryings in both the first chamber 11 and the second chamber 12, in order to meet the drying requirements, the extension length of the box body 10 can only be designed to be half of the original extension length. In addition, in this method, the positions of the unwinding device 300 and the winding device 400 are too far apart, which is not conducive to setting the unwinding device 300 and the winding device 400 on the same device, and will have a certain impact on the unwinding and winding operations. Therefore, this embodiment makes further improvements to the number of sub-cavities 13 in the first chamber 11 and the second chamber 12.

[0060] Combined with the attachment again Figure 2 As shown in , in some examples, optionally, the multiple sub-cavities 13 located in the first chamber 11 include a fifth sub-cavity 135, the first sub-cavity 131, the second sub-cavity 132 and the fifth sub-cavity 135 are arranged in sequence along the first direction, and the first drying component 30 is installed in the fifth sub-cavity 135; the multiple sub-cavities 13 located in the second chamber 12 also include a sixth sub-cavity 136, the third sub-cavity 133, the fourth sub-cavity 134 and the sixth sub-cavity 136 are arranged in sequence along the first direction, and the second drying component 40 is installed in the sixth sub-cavity 136.

[0061] By the attached Figure 2It can be seen that when the first chamber 11 includes the first sub-chamber 131, the second sub-chamber 132 and the fifth sub-chamber 135, and the second chamber 12 includes the third sub-chamber 133, the fourth sub-chamber 134 and the sixth sub-chamber 136, the unwinding device 300 inputs the substrate 200 from the left side of the first sub-chamber 131 into the first sub-chamber 131, and dries the first surface 210 in the first sub-chamber 131 through the first drying component 30. At this time, the first drying component 30 is located above the substrate 200, and the first surface 210 is located on the upper layer of the substrate 200. Then, the substrate 200 is transported to the second sub-chamber 132 through a steering component 20 on the right side. The steering component 20 here can be a conventional rotating roller, which can be in contact with the second surface 220 of the substrate 200.

[0062] Further, when the substrate 200 is transported to the second sub-chamber 132, the first surface 210 is turned to the lower layer of the substrate 200, and the second drying assembly 40 is located below the substrate 200 and dries the first surface 210 of the lower layer. Then, the substrate 200 is output from the left side to the fifth sub-chamber 135 through a turning assembly 20, and the turning assembly 20 here can be an air flotation roller, which reduces the possibility of adhesion between the first surface 210 of the substrate 200 and the first drying assembly 30. After the third drying of the first surface 210 in the fifth sub-chamber 135, the substrate 200 enters the third sub-chamber 133 from the right side through the turning assembly 20 for drying, and then turns again from the left side to enter the fourth sub-chamber 134 for drying, and then turns to the sixth sub-chamber 136 through the air flotation roller, and finally extends from the left side of the sixth sub-chamber 136, and is rolled up by the winding device 400 on the left side.

[0063] In the present application, the first surface 210 of the substrate 200 is dried by the stacked first sub-cavity 131, the second sub-cavity 132 and the fifth sub-cavity 135, and the second surface 220 is dried by the stacked third sub-cavity 133, the fourth sub-cavity 134 and the sixth sub-cavity 136. The first drying component 30 and the second drying component 40 originally arranged in the horizontal direction are designed to be arranged horizontally, so that the first surface 210 and the second surface of the substrate 200 are dried three times to meet the drying requirements. At the same time, the extension length of the box 10 can be reduced to about one third of the original length, further reducing the floor space required for the drying device 100, and the unwinding and winding of the substrate 200 are located on the same side. In this way, the unwinding device 300 and the winding device 400 can be integrated into one structure, which is convenient for the unwinding and winding of the substrate 200 and the transportation of the substrate 200 between the first chamber 11 and the second chamber 12.

[0064] In some examples, optionally, a first adsorption member 50 disposed opposite to the first drying component 30 in the first direction X is disposed in the second sub-cavity 132, and the first adsorption member 50 is used for negative pressure adsorption of the substrate 200 located between the first drying component 30 and the first adsorption member 50; and / or, a second adsorption member 60 disposed opposite to the second drying component 40 in the first direction X is disposed in the fourth sub-cavity 134, and the second adsorption member 60 is used for negative pressure adsorption of the substrate 200 located between the second drying component 40 and the second adsorption member 60.

[0065] The first adsorption component 50 of the present embodiment can be a nozzle structure, which can be connected to a negative pressure pump (not shown in the figure) and other structures. The number of the first adsorption components 50 can be multiple, which are arranged in the second sub-cavity 132 at intervals along the third direction Z in the figure. The negative pressure of the negative pressure pump is used to enable the first adsorption component 50 to adsorb the substrate 200 between the first drying component 30 and the first adsorption component 50, thereby reducing the possibility of the substrate 200 falling onto the first drying component 30 under the action of gravity, which is beneficial for the substrate 200 to remain suspended and reduces the risk of adhesion between the substrate 200 and the first drying component 30.

[0066] Similarly, the second adsorption component 60 of the present embodiment may also be a nozzle structure, which may be connected to a negative pressure pump and other structures. The number of second adsorption components 60 may also be multiple, which are arranged in the fourth sub-cavity 134 at intervals along the third direction Z in the figure. The second adsorption component 60 negatively adsorbs the substrate 200 located between the second drying component 40 and the second adsorption component 60 through negative pressure adsorption, thereby reducing the possibility of the substrate 200 falling onto the second drying component 40 under the action of gravity, which is beneficial for the substrate 200 to remain suspended and reduces the risk of adhesion between the substrate 200 and the second drying component 40.

[0067] The substrate 200 extending from the fifth sub-cavity 135 can be transported to the third sub-cavity 133 by the second transport assembly 90 described below. The second transport assembly 90 can be a climbing structure for transporting the substrate 200 by climbing. By configuring the second transport assembly 90, it is convenient for the substrate 200 to be transported from the fifth sub-cavity 135 to the third sub-cavity 133 above, thereby realizing the climbing transportation of the substrate 200.

[0068] In some examples, optionally, the drying device 100 further includes a first conveying assembly 80 . The first conveying assembly 80 is installed in each sub-chamber 13 , and the first conveying assembly 80 is used to convey the substrate 200 .

[0069] In this embodiment, each sub-cavity 13 is equipped with a first conveying assembly 80 . The first conveying assembly 80 may include a plurality of conveying rollers for conveying the substrate 200 in the sub-cavity 13 .

[0070] Combined with Figure 3As shown in , in some examples, optionally, the drying device 100 further includes an air inlet assembly 70, which is at least partially disposed in the housing 10 and is respectively connected to the first drying assembly 30 and the second drying assembly 40.

[0071] In the related art, the air inlet structure of the drying device 100 is installed outside the box body 10, occupying a large installation space outside the box body 10, and the safety and stability of the air inlet component need to be improved.

[0072] Therefore, in this embodiment, by arranging the air inlet assembly 70 in the box body 10, the space of the drying device 100 in the width direction can be reduced to a certain extent, further reducing the floor space required by the drying device 100 and improving the space utilization rate of the factory. At the same time, the box body 10 is also used to protect the air inlet assembly 70, thereby improving the safety and operation stability of both.

[0073] In some examples, optionally, along a second direction Y intersecting the first direction X, the housing 10 includes a first area 14 and a second area 15 arranged sequentially and separated from each other, the first chamber 11 and the second chamber 12 are disposed in the first area 14 , and the air inlet assembly 70 is disposed in the second area 15 .

[0074] The first area 14 and the second area 15 are independent spaces, and the second direction Y can be understood as the width direction of the box 10. By designing the box 10 as the separated first area 14 and the second area 15, the possibility of interference with the first drying assembly 30 and the second drying assembly 40 after the air inlet assembly 70 is installed is reduced.

[0075] Furthermore, the above-mentioned first area 14 is the original operating area of ​​the box body 10, in which the substrate 200 is dried and the device can be repaired and maintained. The above-mentioned second area 15 is the original driving area of ​​the box body 10, and the driving area is used to place the fan assembly and the heating assembly (not shown in the figure). The fan assembly is used to supply air to the first drying assembly 30 and the second drying assembly 40, and the heating assembly is used to heat the airflow in the first drying assembly 30 and the second drying assembly 40.

[0076] In some examples, optionally, the air inlet assembly 70 includes a plurality of air inlet pipes 71 , each of which is connected to at least one first drying device 100 and may also be connected to at least one second drying device 100 .

[0077] Combined with Figure 4As shown in, in some examples, the first drying component 30 includes an air inlet mechanism 31, an air outlet mechanism 32 and a return air mechanism 33. The air inlet mechanism 31 is connected to the air outlet mechanism 32. The air outlet mechanism 32 is used to dry the substrate 200. The return air mechanism 33 is used to transport the airflow in the first chamber 11 to the air inlet mechanism 31. The return air mechanism 33 forms a plurality of return air ports through an air partition plate 331 to stabilize the return air flow.

[0078] Among them, the air inlet mechanism 31 is used to introduce the air outside the box 10 into the air outlet mechanism 32 for air outlet. The air inlet mechanism 31 can be a box 10 or a tubular structure, and can be connected to an air induction device such as a fan (not shown in the figure). The air outlet mechanism 32 can be an air outlet nozzle, and the hot air sprayed from the air outlet nozzle dries the first surface 210 and the second surface 220 of the substrate 200. The number of air outlet nozzles can be multiple, and the multiple nozzles are arranged at the bottom of the air outlet mechanism 32 along the first direction X, and are all connected to the air outlet of the air outlet mechanism 32. The return air mechanism 33 is used to introduce the air in the sub-cavity 13 of the first chamber 11 into the air inlet mechanism 31, so as to realize the circulation of airflow.

[0079] In some examples, optionally, along a first direction X, the air intake mechanism 31 includes a first mounting surface 311 and a second mounting surface 312 opposite to each other, and along a second direction Y intersecting with the first direction X, the air intake mechanism 31 includes a first end 313 and a second end 314 opposite to each other; the first end 313 is provided with an air inlet 3131, the return air mechanism 33 is installed on the first mounting surface 311 and is located at the second end 314, and the air outlet mechanism 32 is installed on the second mounting surface 312.

[0080] During drying, the airflow of the air inlet assembly 70 can be delivered to the air inlet 3131, and then the air outlet mechanism 32 discharges air in a direction away from the first mounting surface 311. The airflow after the drying operation moves toward the first mounting surface 311, enters the second end 314 of the air inlet mechanism 31, and is guided by the return air mechanism 33 to return to the air inlet mechanism 31 again, forming an airflow circulation.

[0081] In some examples, optionally, the first mounting surface 311 is provided with a return air port 3111 , the return air port 3111 extends from the second end 314 to the first end 313 , and is at least partially located between the air inlet 3131 and the air outlet mechanism 32 .

[0082] The extension direction of the return air outlet 3111 is the first direction X, and the return air outlet 3111 extends from the second end 314 of the air outlet mechanism 32 to the first end 313, so that part of the airflow in the sub-cavity 13 can flow from the second end 314 to the first end 313 when entering the return air outlet 3111, and then enter the return air mechanism 33, and finally enter the air inlet mechanism 31 again, which can increase the air volume entering the return air mechanism 33 and thereby improve the return air efficiency.

[0083] The second drying component 40 of this embodiment has the same structure as the first drying component 30 , so the second drying component 40 of this embodiment can be understood by referring to the structure of the first drying component 30 .

[0084] Combined with the attachment again Figure 2 As shown in , in some examples, optionally, the drying device 100 further includes a second conveying component 90 , and the second conveying component 90 flips and conveys the substrate 200 in the first chamber 11 to the second chamber 12 .

[0085] The second conveying assembly 90 mainly serves to convey and turn the substrate 200. For example, it may be a climbing structure that can drive the substrate 200 to climb and turn, such as a transmission belt. For another example, the second conveying assembly 90 may include two groups of air floating rollers, one group of air floating rollers is adjacent to the second chamber 12, and the other group is adjacent to the second chamber. Each group of air floating rollers includes two air floating rollers, and the substrate 200 is located between the two air floating rollers. Of course, the structure of the second conveying assembly 90 is not limited to this, and this embodiment will not be listed in detail.

[0086] Combined with the attachment again Figure 1 As shown in , in some examples, optionally, the box body 10 is provided with at least one first opening (not shown in the figure due to being blocked by the first door body 16), the first opening connects two adjacent sub-cavities 13, and the box body 10 is installed with a first door body 16 for opening and closing the first opening.

[0087] For example, a plurality of first openings are provided on the first chamber 11, and the plurality of first openings are arranged at intervals along the third direction Z, and the first openings are connected to the first sub-cavity 131 and the second sub-cavity 132. The first door 16 is used to open or close the first openings, so that the first drying components 30 and other structures in the two sub-cavities 13 can be inspected and maintained at the same time.

[0088] In addition, the box body 10 is provided with at least one second opening (not shown in the figure), and the box body 10 is installed with a second door body 17 for opening and closing the second opening at the second opening, and the second opening and the first opening are arranged at intervals along the first direction X, and the second opening can only communicate with one sub-cavity 13, for example, the second opening located in the first cavity 11 is only connected to the fifth sub-cavity 135, and the second opening located in the second cavity 12 is only connected to the sixth sub-cavity 136. The number of the second openings can also be multiple, and the multiple second openings are arranged at intervals along the third direction Z.

[0089] In a second aspect, an embodiment of the present application provides a battery production system, including a drying device 100 as described in the above technical solution. In addition, the battery production system of this embodiment may also include a coating device (not shown in the figure) for coating an active substance on a substrate 200.

[0090] Finally, please refer to the attached Figure 1-4As shown in , the embodiment of the present application provides a first aspect, and the embodiment of the present application provides a drying device 100 for drying a substrate 200 with a coating, the substrate 200 having a first surface 210 and a second surface 220 opposite to each other, the drying device 100 comprises a housing 10, a first drying assembly 30 and a second drying assembly 40, the housing 10 comprises a first chamber 11 and a second chamber 12 which are stacked and connected; the first drying assembly 30 is installed in the first chamber 11 and is used to dry the coating on the first surface 210; the second drying assembly 40 is installed in the second chamber 12 and is used to dry the coating on the second surface 220. A plurality of sub-cavities 13 arranged along a first direction X are provided in both the first chamber 11 and the second chamber 12, the first direction X being the arrangement direction of the first chamber 11 and the second chamber 12, at least one first drying assembly 30 is installed in each sub-cavity 13 in the first chamber 11, and at least one second drying assembly 40 is installed in each sub-cavity 13 in the second chamber 12. The drying device 100 further includes a steering assembly 20, which is disposed between two adjacent sub-cavities 13 and is used to turn the substrate 200 in one of the sub-cavities 13 to another adjacent sub-cavity 13. The multiple sub-cavities 13 located in the first chamber 11 include a first sub-cavity 131 and a second sub-cavity 132, and the first drying assembly 30 is installed in both the first sub-cavity 131 and the second sub-cavity 132; and / or, the multiple sub-cavities 13 located in the first chamber 11 include a third sub-cavity 133 and a fourth sub-cavity 134, and the second drying assembly 40 is installed in both the third sub-cavity 133 and the fourth sub-cavity 134. The multiple sub-cavities 13 located in the first chamber 11 include a fifth sub-cavity 135, the first sub-cavity 131, the second sub-cavity 132 and the fifth sub-cavity 135 are arranged in sequence along the first direction X, and the first drying component 30 is installed in the fifth sub-cavity 135; the multiple sub-cavities 13 located in the second chamber 12 also include a sixth sub-cavity 136, the third sub-cavity 133, the fourth sub-cavity 134 and the sixth sub-cavity 136 are arranged in sequence along the first direction X, and the second drying component 40 is installed in the sixth sub-cavity 136. The second sub-cavity 132 is provided with a first adsorbent 50 disposed opposite to the first drying component 30 in the first direction X, and the first adsorbent 50 is used for negative pressure adsorption of the substrate 200 located between the first drying component 30 and the first adsorbent 50; and / or, the fourth sub-cavity 134 is provided with a second adsorbent 60 disposed opposite to the second drying component 40 in the first direction X, and the second adsorbent 60 is used for negative pressure adsorption of the substrate 200 located between the second drying component 40 and the second adsorbent 60. The drying device 100 further includes a first conveying component 80, and each sub-cavity 13 is provided with a first conveying component 80, and the first conveying component 80 is used for conveying the substrate 200. The drying device 100 further includes an air inlet component 70, which is at least partially disposed in the housing 10 and is respectively connected to the first drying component 30 and the second drying component 40.Along the second direction Y intersecting with the first direction X, the housing 10 includes a first area 14 and a second area 15 arranged in sequence and spaced apart, the sub-cavity 13 is arranged in the first area 14, and the air inlet assembly 70 is arranged in the second area 15. The first drying assembly 30 includes an air inlet mechanism 31, an air outlet mechanism 32 and an air return mechanism 33, the air inlet mechanism 31 is connected with the air outlet mechanism 32, the air outlet mechanism 32 is used to dry the substrate 200, and the air return mechanism 33 is used to transport the air flow in the sub-cavity 13 to the air inlet mechanism 31. Along the first direction X, the air inlet mechanism 31 includes a first mounting surface 311 and a second mounting surface 312 opposite to each other, and along the second direction Y intersecting with the first direction X, the air inlet mechanism 31 includes a first end 313 and a second end 314 opposite to each other; the first end 313 is provided with an air inlet 3131, the air return mechanism 33 is installed on the first mounting surface 311 and located at the second end 314, and the air outlet mechanism 32 is installed on the second mounting surface 312. The first mounting surface 311 is provided with a return air port 3111, which extends from the second end 314 to the first end 313 and is at least partially located between the air inlet 3131 and the air outlet mechanism 32. The drying device 100 further includes a second conveying assembly 90, which is used to flip and convey the substrate 200 in the first chamber 11 to the second chamber 12. The housing 10 is provided with at least one first opening, which is connected to two adjacent sub-cavities 13, and a first door 16 for opening and closing the first opening is installed on the housing 10.

[0091] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A drying device for drying a substrate having a coating, wherein the substrate has a first surface and a second surface opposite to each other, characterized in that: include: The box body comprises a first chamber and a second chamber which are stacked and connected; A first drying assembly, installed in the first chamber and used to dry the coating on the first surface; as well as The second drying component is installed in the second chamber and is used for drying the coating on the second surface.

2. The drying device according to claim 1, characterized in that: The first chamber and the second chamber are both provided with a plurality of sub-cavities arranged along a first direction, wherein the first direction is the arrangement direction of the first chamber and the second chamber, and at least one of the first drying components is installed in each of the sub-cavities in the first chamber, and at least one of the second drying components is installed in each of the sub-cavities in the second chamber.

3. The drying device according to claim 2, characterized in that: The drying device further comprises a diverting assembly, which is disposed between two adjacent sub-cavities and is used to divert and transfer the substrate in one of the sub-cavities to another adjacent sub-cavity.

4. The drying device according to claim 2, characterized in that: The plurality of sub-cavities located in the first chamber include a first sub-cavity and a second sub-cavity, and the first drying component is installed in both the first sub-cavity and the second sub-cavity; And / or, the plurality of sub-cavities located in the second chamber include a third sub-cavity and a fourth sub-cavity, and the second drying assembly is installed in both the third sub-cavity and the fourth sub-cavity.

5. The drying device according to claim 4, characterized in that: The multiple sub-cavities located in the first chamber include a fifth sub-cavity, the first sub-cavity, the second sub-cavity and the fifth sub-cavity are arranged in sequence along the first direction, and the first drying component is installed in the fifth sub-cavity; The multiple sub-cavities located in the second chamber further include a sixth sub-cavity. The third sub-cavity, the fourth sub-cavity and the sixth sub-cavity are arranged in sequence along the first direction. The second drying component is installed in the sixth sub-cavity.

6. The drying device according to claim 5, characterized in that: A first adsorbent is disposed in the second sub-cavity and is arranged opposite to the first drying component in the first direction, and the first adsorbent is used for negative pressure adsorbing a substrate between the first drying component and the first adsorbent; And / or, a second adsorption member disposed opposite to the second drying component in the first direction is disposed in the fourth sub-chamber, and the second adsorption member is used for negative pressure adsorption of the substrate between the second drying component and the second adsorption member.

7. The drying device according to claim 2, characterized in that: The drying device further comprises a first conveying component, each of the sub-cavities is equipped with the first conveying component, and the first conveying component is used for conveying the substrate.

8. The drying device according to claim 1, characterized in that: The drying device further comprises an air inlet assembly, which is located in the housing and is respectively connected to the first drying assembly and the second drying assembly.

9. The drying device according to claim 8, characterized in that: Along a second direction intersecting with the first direction, the box body includes a first area and a second area arranged in sequence and separated from each other, the first chamber and the second chamber are arranged in the first area, the air inlet assembly is arranged in the second area, and the first direction is the arrangement direction of the first chamber and the second chamber.

10. The drying device according to claim 1, characterized in that: The first drying component includes an air inlet mechanism, an air outlet mechanism and an air return mechanism. The air inlet mechanism is connected to the air outlet mechanism. The air outlet mechanism is used to dry the substrate. The air return mechanism is used to transport the airflow in the first chamber to the air inlet mechanism.

11. The drying device according to claim 10, characterized in that: Along a first direction, the air inlet mechanism includes a first mounting surface and a second mounting surface opposite to each other; along a second direction intersecting with the first direction, the air inlet mechanism includes a first end and a second end opposite to each other; the first end is provided with an air inlet, the return air mechanism is installed on the first mounting surface and is located at the second end, and the air outlet mechanism is installed on the second mounting surface; the first direction is the arrangement direction of the first chamber and the second chamber.

12. The drying device according to claim 11, characterized in that: The first mounting surface is provided with a return air port, which extends from the second end to the first end and is at least partially located between the air inlet and the air outlet mechanism.

13. The drying device according to any one of claims 1 to 12, characterized in that: The drying device further includes a second conveying component, which turns over and conveys the substrate in the first chamber to the second chamber.

14. The drying device according to any one of claims 2 to 7, characterized in that: The box body is provided with at least one first opening, the first opening is connected to two adjacent sub-cavities, and a first door body for opening and closing the first opening is installed on the box body.

15. A battery production system, characterized in that: Comprising a drying device as described in any one of claims 1-14.

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