Drying equipment, battery piece processing device and battery production line
By designing a drying equipment with air inlet, air outlet and heating table, the problem of organic solvent evaporation and contamination during the battery cell drying process is solved, and lower temperature drying and higher quality battery cells are achieved.
Patent Information
- Application Number
- CN202421583104.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-05
AI Technical Summary
In existing battery cell drying equipment, the organic solvent in the slurry evaporates and adheres to the drying chamber during heating, resulting in contamination and quality reduction.
A drying equipment is designed, including a box and a heating table. The box is equipped with an air inlet and an air inlet. The volatiles are removed in time through the exhaust mechanism, and the battery cells are heated through the heating parts of the heating table to avoid excessive temperature of the drying chamber.
It effectively reduces the attachment of volatiles in the drying chamber, reduces the high-temperature denaturation products of the adhered substances, maintains the cleanliness of the surface of the battery cell, reduces the cross-contamination of the slurry, and improves the quality of the battery cell.
Smart Images
Figure CN222662963U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery sheet processing, in particular to a drying device, a battery sheet processing device and a battery production line. Background Art
[0002] The silk screen printing process is to place the battery cell on the table, and then use the screen plate and scraper to squeeze the slurry through the pattern composed of tiny holes on the screen plate to form a printed pattern. The main components of the slurry include silver powder or aluminum powder, as well as diluents and glass powder. The printed slurry also contains a large amount of organic solvents. Since the silk screen printing process requires multiple printings of slurry in different positions, the organic solvent must be dried after each printing before the next printing can be carried out, otherwise the slurry will stick to the screen plate for the next printing.
[0003] In the related art, when printing on a battery cell, the battery cell is usually supported on a mesh belt in the chamber of an oven, and then hot air is used to heat the battery cell to dry the slurry on the surface of the battery cell. During this drying process, the organic matter in the slurry will adhere to the chamber of the oven, and the temperature of the chamber is relatively high. These organic matter will continue to oxidize or decompose other organic matter under long-term high temperature and oxygen conditions, which may eventually cause contamination to the surface of the battery cell, thereby affecting the final product quality of the battery cell. Utility Model Content
[0004] The utility model provides a drying device, a battery cell processing device and a battery production line, which are beneficial to reducing the pollution caused by volatile organic solvents on the surface of slurry or the surface of battery cells, so that the dried battery cells have good quality.
[0005] In a first aspect, an embodiment of the utility model provides a drying device for drying a battery cell, the drying device comprising:
[0006] A box body, the box body having a drying chamber, the box body being provided with an air inlet and an air exhaust port connected to the drying chamber, the air exhaust port being used to connect to an exhaust mechanism so that gas enters the drying chamber through the air inlet and is exhausted through the air exhaust port; and
[0007] A heating platform is arranged in the drying chamber, the heating platform is provided with a heating element, and the heating platform has a placement surface, the placement surface is used to place the battery cell so that the heating element heats the battery cell.
[0008] As an optional implementation, in the present invention, the placement surface is configured to fit the battery sheet so that the printed surface of the battery sheet is disposed away from the placement surface;
[0009] The placement surface is provided with an air suction hole, the air suction hole is used to connect an air suction mechanism, and the air suction hole is used to adsorb the battery sheet onto the placement surface.
[0010] As an optional embodiment, in the present invention, along the height direction of the heating platform, the heating element is arranged below the placement surface, and the air suction hole is staggered relative to the heating element;
[0011] Alternatively, along the height direction of the heating platform, the heating element is arranged on the placement surface, and the air suction holes are staggered relative to the heating element.
[0012] As an optional embodiment, in the utility model, the box body is also provided with a feed port and a discharge port, the feed port and the discharge port are connected to the drying chamber, and the heating platform can be movably arranged in the drying chamber to move from the feed port to the discharge port relative to the drying chamber.
[0013] As an optional embodiment, in the present invention, along the height direction of the drying chamber, the distance from the heating platform to the bottom surface of the drying chamber is smaller than the distance from the air inlet and the air outlet to the bottom surface of the drying chamber;
[0014] And / or, along the height direction of the drying chamber, the air inlet and the air exhaust port are arranged on the top of the box body.
[0015] As an optional embodiment, in the utility model, the heating element includes a first heating wire and a second heating wire, the first heating wire is configured to correspond to the main grid printing area of the battery cell, and the second heating wire is configured to correspond to the secondary grid printing area of the battery cell.
[0016] As an optional implementation, in the present utility model, the number of the main grid printing area and the number of the secondary grid printing area are both multiple;
[0017] The placement surface has a plurality of first heating areas and a plurality of second heating areas, the width of the first heating area is greater than the width of the second heating area, each of the first heating areas is configured to correspond to each of the main grid printing areas, and each of the second heating areas is configured to correspond to each of the secondary grid printing areas;
[0018] The first heating wire is arranged on the first heating area, the second heating wire is arranged on the second heating area, and the number of the first heating wires on the first heating area is greater than the number of the second heating wires on the second heating area.
[0019] In a second aspect, an embodiment of the present application provides a battery cell processing device, comprising an exhaust mechanism and a drying device as described in the first aspect, wherein the exhaust mechanism is connected to the exhaust port.
[0020] As an optional embodiment, in the present utility model, the battery cell processing device further includes a hot air mechanism, the hot air mechanism is connected to the air inlet, the hot air mechanism is configured to heat the gas input from the air inlet, and the temperature of the gas when input from the air inlet is lower than the heating temperature of the heating element;
[0021] And / or, a conveying mechanism, the heating platform is arranged on the conveying mechanism, the conveying mechanism is configured to convey the heating platform into the drying chamber, and to convey the heating platform located in the drying chamber to the outside of the box; the conveying direction of the conveying mechanism is opposite to the exhaust direction of the exhaust mechanism in the drying chamber.
[0022] In a third aspect, an embodiment of the present application provides a battery production line, comprising the drying equipment as described in the first aspect, or the battery cell processing device as described in the second aspect.
[0023] Compared with the prior art, the beneficial effects are:
[0024] The utility model provides a drying device, a battery cell processing device and a battery production line. The drying device includes a box body and a heating table located in the box body. The box body is provided with an air inlet and an exhaust port. The heating table is provided with a heating element. The battery cell is placed on the placement surface, so as to achieve heating and drying of the battery cell. During the drying process, the organic solvent in the slurry on the surface of the battery cell will inevitably volatilize into the drying chamber to form volatiles. At the same time, the volatiles can be timely extracted by connecting the exhaust port to the exhaust mechanism, and the concentration of the volatiles is reduced, thereby reducing the volatiles adhering to the drying chamber to form attached substances. Moreover, since the battery cell is heated by the heating element in the heating table, the temperature in the drying chamber does not need to be heated to the temperature required for slurry drying, which is conducive to reducing the temperature in the drying chamber to a lower temperature, thereby reducing the high-temperature denatured products of the attached substances, and the amount of the attached substances volatilized again is also lower, which is conducive to maintaining the cleanliness of the battery cell surface and reducing the cross contamination of the slurry, so that the battery cell dried by the drying equipment has good quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 It is a structural schematic diagram of a drying device disclosed in an embodiment of the utility model;
[0027] Figure 2 It is a structural schematic diagram of a heating platform disclosed in an embodiment of the utility model;
[0028] Figure 3 It is another structural schematic diagram of the heating platform disclosed in the embodiment of the utility model;
[0029] Figure 4 yes Figure 2 A schematic diagram of placing a battery cell on a placement surface;
[0030] Figure 5 It is a structural schematic diagram of a battery cell processing device disclosed in an embodiment of the utility model.
[0031] Description of reference numerals:
[0032] 100, drying equipment; 110, housing; 111, drying chamber; 112, air inlet; 113, exhaust outlet; 114, feed inlet; 115, discharge outlet; 120, heating table; 121, placement surface; 122, air inlet; 123, first heating area; 124, second heating area; 130, heating element; 131, first heating wire; 132, second heating wire; 200, exhaust mechanism; 300, battery cell; 310, printing surface; 311, main grid printing area; 312, secondary grid printing area; 400, hot air mechanism; 500, conveying mechanism. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] In the present invention, the terms "top", "bottom", "inside", "outside", "middle" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated structures, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.
[0036] In addition, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two structures, elements, or components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0037] In addition, the terms "first", "second", etc. are mainly used to distinguish different structures, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated structures, elements or components. Unless otherwise specified, "plurality" means two or more.
[0038] After the battery cells are screen-printed, they are horizontally conveyed to an oven, a drying furnace or other types of drying equipment by a mesh belt of a drying device in the related art. The drying equipment uses a heating lamp or a heating lamp combined with a hot air device above the battery cells to heat the battery cells in the drying cavity to dry the slurry on the battery cells.
[0039] However, the above heating method has the following problems: on the one hand, the organic solvent volatilized by the battery cell during the heating process will continue to volatilize in the drying cavity to form volatiles, and the volatiles will continue to accumulate and increase in concentration. The high-concentration volatiles will be attached to the heating lamp tube and the wall of the drying cavity to form a large amount of attached substances. Because the heating lamp tube continues to heat, the attached substances will denature under heating and oxygen conditions. The denatured products have complex components and will be attached to the surface of the battery cell, affecting the quality of the battery cell.
[0040] On the other hand, it has been verified that the inorganic part of the slurry also evaporates slowly. The silver, aluminum, glass powder and other components in the slurry will also adhere to the mesh belt, heating lamp and the wall of the drying cavity. After being heated by the heating lamp, the silver, aluminum and other components will also contaminate the surface of the battery cell and even the surface of the slurry. After the sintering process, it will eventually lead to surface contamination of the battery cell or cross-contamination of the slurry, thus affecting the quality of the battery cell.
[0041] In order to solve the above problems, the present embodiment provides a drying device, a battery cell processing device and a battery production line, which will be described in detail below with reference to the accompanying drawings.
[0042] Please also read Figures 1 to 4 In a first aspect, an embodiment of the utility model provides a drying device 100 for drying a battery cell 300 . The drying device 100 includes a box body 110 and a heating platform 120 .
[0043] The housing 110 has a drying chamber 111 , and is provided with an air inlet 112 and an air outlet 113 connected to the drying chamber 111 . The air outlet 113 is used to connect to the exhaust mechanism 200 so that the gas enters the drying chamber 111 through the air inlet 112 and is exhausted through the air outlet 113 .
[0044] The heating platform 120 is disposed in the drying chamber 111 . The heating platform 120 is provided with a heating element 130 . The heating platform 120 has a placement surface 121 . The placement surface 121 is used to place the battery cell 300 so that the heating element 130 heats the battery cell 300 .
[0045] During the drying process of the drying device 100, the organic solvent in the slurry on the surface of the battery cell 300 will inevitably evaporate into the drying chamber 111 to form volatiles. At the same time, the exhaust port 113 is connected to the exhaust mechanism 200, so that the volatiles can be extracted in time, the concentration of the volatiles is reduced, and the volatiles are less likely to adhere to the drying chamber 111 to form attached substances.
[0046] Furthermore, since the heating element 130 in the heating table 120 is used to heat the battery cell 300, the temperature in the drying chamber 111 does not need to be heated to the temperature required for drying the slurry, which is beneficial for the temperature in the drying chamber 111 to drop to a lower temperature, thereby reducing the high-temperature denatured products of the attached substances, and the amount of attached substances volatilized again is also lower, which is beneficial for maintaining the cleanliness of the surface of the battery cell 300 and reducing cross-contamination of the slurry, so that the battery cell 300 after drying by the drying equipment 100 has good quality.
[0047] As an optional implementation, in the present utility model, if Figure 1 As shown, along the height direction of the drying chamber 111, the distance from the heating platform 120 to the bottom surface of the drying chamber 111 is smaller than the distance from the air inlet 112 and the air outlet 113 to the bottom surface of the drying chamber 111. Figure 1 The air inlet 112 and the air outlet 113 are both located above the heating platform 120, which is conducive to guiding the volatiles generated by the battery cell 300 on the heating platform 120 to diffuse upward and be taken away.
[0048] Furthermore, if Figure 1As shown, along the height direction of the drying chamber 111, the air inlet 112 and the air outlet 113 are arranged at the top of the box body 110. Since hot air rises, the volatiles generated by heating are easily accumulated on the top of the box body 110. By arranging the air inlet 112 and the air outlet 113 at the top of the box body 110, it is helpful to quickly take away the volatiles accumulated on the top of the box body 110.
[0049] As an optional implementation, in the present utility model, if Figure 1 As shown, the placement surface 121 is configured to fit the battery cell 300 so that the printed surface 310 of the battery cell 300 is arranged away from the placement surface 121. The term "printed surface 310 of the battery cell 300" refers to the surface of the battery cell 300 on which the paste is printed. On the one hand, such a configuration can keep the battery cell 300 flat due to the fit to the placement surface 121, reduce warping, and improve heating uniformity. On the other hand, it can prevent the paste on the printed surface 310 of the battery cell 300 from contacting the placement surface 121. Moreover, most of the volatiles generated by the paste on the printed surface 310 of the battery cell 300 will diffuse upward. The battery cell 300 is attached to the placement surface 121, blocking the volatiles from contacting the placement surface 121, so that the attached substances formed on the placement surface 121 are extremely small, thereby reducing the situation where the heating element 130 heats the attached substances and causes them to denature.
[0050] As an optional implementation, in the present utility model, if Figure 2 As shown, the placement surface 121 is provided with an air suction hole 122, which is used to connect an air suction mechanism, and the air suction hole 122 is used to absorb the battery cell 300 on the placement surface 121 to ensure uniform heating and further prevent the battery cell 300 from warping. Preferably, the air suction mechanism can be a vacuum pump, a negative pressure device, etc.
[0051] Preferably, there are a plurality of suction holes 122 , and the plurality of suction holes 122 are evenly distributed on the placement surface 121 , so as to adsorb multiple positions of the battery cell 300 .
[0052] As an optional implementation, in the present utility model, if Figure 2 As shown, the height direction of the heating platform 120 is Figure 2 In the middle Z-axis direction, along the height direction of the heating platform 120, the heating element 130 is arranged on the placement surface 121, and the suction holes 122 are staggered relative to the heating element 130. By rationally utilizing the space on the placement surface 121 to avoid mutual interference between the suction holes 122 and the heating element 130, the independence of each part is improved, so that the placement surface 121 has both heating and adsorption functions.
[0053] or Figure 3 As shown, the height direction of the heating platform 120 is Figure 2In the Z-axis direction, along the height direction of the heating platform 120, the heating element 130 is arranged below the placement surface 121 to avoid the heating element 130 being exposed and indirectly heating the battery cell 300. The air intake holes 122 are staggered relative to the heating element 130 to avoid interference between the air intake holes 122 and the heating element 130.
[0054] As an optional implementation, in the present utility model, if Figure 2 As shown, the heating element 130 includes a first heating wire 131 and a second heating wire 132. The first heating wire 131 is configured to correspond to the main grid printing area 311 of the battery cell 300, and the second heating wire 132 is configured to correspond to the secondary grid printing area 312 of the battery cell 300, so as to specifically heat the main grid printing area 311 and the secondary grid printing area 312 printed with paste. Specifically, the term "main grid printing area 311" refers to the area on the surface of the battery cell 300 where the main grid paste is printed according to the main grid pattern. The main grid printing area 311 is along the main grid printing area 311. Figure 2 The term "subgrid printing area 312" refers to the area on the surface of the cell 300 where the subgrid paste is printed according to the subgrid pattern. Figure 2 Extends in the Y-axis direction.
[0055] As an optional implementation, in the present invention, the number of the main grid printing area 311 and the number of the secondary grid printing area 312 are both plural.
[0056] The placement surface 121 has a plurality of first heating areas 123 and a plurality of second heating areas 124, see Figure 2 , the first heating area 123 along Figure 2 The second heating area 124 extends in the X-axis direction. Figure 2 The width of the first heating area 123 is greater than the width of the second heating area 124 .
[0057] Each first heating region 123 is configured to correspond to each main grid printing region 311 , and each second heating region 124 is configured to correspond to each sub-grid printing region 312 .
[0058] Since the width of the main grid printing area 311 is greater than that of the secondary grid printing area 312 and the width of the first heating area 123 is greater than that of the second heating area 124 , it is beneficial to reasonably arrange the number of the first heating wires 131 and the second heating wires 132 , thereby avoiding energy waste.
[0059] The first heating wire 131 is arranged on the first heating area 123, and the second heating wire 132 is arranged on the second heating area 124. The width of the main grid printing area 311 is wider than that of the secondary grid printing area 312, and more heat is required for drying. For this reason, the number of the first heating wires 131 on the first heating area 123 is greater than the number of the second heating wires 132 on the second heating area 124, and the main grid printing area 311 and the secondary grid printing area 312 printed with slurry are further heated in a targeted manner.
[0060] As an optional implementation, in the present utility model, if Figure 1 As shown, the box body 110 is also provided with a feed port 114 and a discharge port 115, and the feed port 114 and the discharge port 115 are connected to the drying chamber 111, and the heating table 120 can be movably arranged in the drying chamber 111 to move from the feed port 114 to the discharge port 115 relative to the drying chamber 111, so that the heating table 120 can be moved out of the box body 110 to remove the battery cell 300 after drying is completed, or the battery cell 300 can be loaded onto the heating table 120 and then moved into the drying chamber 111 for drying.
[0061] Specifically, the heating stage 120 is disposed on the conveying mechanism 500 (see Figure 5 ), such as a conveyor belt or a conveyor track, the heating platform 120 is driven by the conveying mechanism 500 to move along a preset trajectory.
[0062] like Figure 5 As shown, in the second aspect, the embodiment of the present application provides a battery cell processing device, including an exhaust mechanism 200 and the drying device 100 as described in the first aspect, and the exhaust mechanism 200 is connected to the exhaust port 113. Exemplarily, the exhaust structure can be an exhaust fan and a negative pressure device.
[0063] As an optional implementation, in the present utility model, if Figure 5 As shown, the battery cell processing device further includes a hot air mechanism 400, and the hot air mechanism 400 is connected to the air inlet 112. Exemplarily, the hot air mechanism 400 can be a hot air blower, a heat pump, and the like.
[0064] The hot air mechanism 400 is configured to heat the gas input from the air inlet 112, and the temperature of the gas when input from the air inlet 112 is lower than the heating temperature of the heating element 130, so as to avoid excessively high input gas temperature causing a large amount of attached substances to be denatured and volatilized again. Exemplarily, the heating temperature of the heating element 130 is 200°C to 400°C, and the working temperature of the hot air mechanism 400 is 100°C, that is, the temperature of the gas when input from the air inlet 112 is 100°C.
[0065] As an optional implementation, in the present utility model, if Figure 5As shown, the battery cell processing device also includes a conveying mechanism 500, and the heating table 120 is arranged on the conveying mechanism 500. The conveying mechanism 500 is configured to convey the heating table 120 to the drying chamber 111, and to convey the heating table 120 located in the drying chamber 111 to the outside of the box 110, so as to facilitate loading and unloading.
[0066] As an optional embodiment, in the present invention, the conveying direction of the conveying mechanism 500 is opposite to the exhaust direction of the exhaust mechanism 200 in the drying chamber 111. For example, the conveying direction is as follows: Figure 5 In the X1-X0 direction, the air extraction direction is as follows Figure 5 The longer the heating platform 120 transported by the transport mechanism 500 stays in the drying chamber 111, the more volatiles are generated by heating, and the exhaust direction is opposite to the transport direction, so that the gas brought in by the exhaust first takes away a large amount of volatiles volatilized by the battery cell 300 with a longer drying time.
[0067] In a third aspect, an embodiment of the present application provides a battery production line, comprising the drying equipment as described in the first aspect, or the battery cell processing device as described in the second aspect.
[0068] The above is a detailed introduction to a drying device, a battery cell processing device and a battery production line disclosed in an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea; at the same time, for general technical personnel in this field, according to the idea of the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.
Claims
1. A drying device for drying battery cells, characterized in that: The drying equipment comprises: A box body, the box body having a drying chamber, the box body being provided with an air inlet and an air exhaust port connected to the drying chamber, the air exhaust port being used to connect to an exhaust mechanism so that gas enters the drying chamber through the air inlet and is exhausted through the air exhaust port; and A heating platform is arranged in the drying chamber, the heating platform is provided with a heating element, and the heating platform has a placement surface, the placement surface is used to place the battery cell so that the heating element heats the battery cell.
2. The drying device according to claim 1, characterized in that: The placement surface is configured to fit the battery sheet so that the printed surface of the battery sheet is disposed away from the placement surface; The placement surface is provided with an air suction hole, the air suction hole is used to connect an air suction mechanism, and the air suction hole is used to adsorb the battery sheet onto the placement surface.
3. The drying device according to claim 2, characterized in that: Along the height direction of the heating platform, the heating element is arranged below the placement surface, and the air suction hole is staggered relative to the heating element; Alternatively, along the height direction of the heating platform, the heating element is arranged on the placement surface, and the air suction holes are staggered relative to the heating element.
4. The drying device according to claim 1, characterized in that: The box body is also provided with a feed port and a discharge port, the feed port and the discharge port are connected to the drying chamber, and the heating platform can be movably arranged in the drying chamber to move from the feed port to the discharge port relative to the drying chamber.
5. The drying device according to claim 1, characterized in that: Along the height direction of the drying chamber, the distance from the heating platform to the bottom surface of the drying chamber is smaller than the distance from the air inlet and the air exhaust port to the bottom surface of the drying chamber; And / or, along the height direction of the drying chamber, the air inlet and the air exhaust port are arranged on the top of the box body.
6. The drying device according to any one of claims 1 to 5, characterized in that: The heating element includes a first heating wire and a second heating wire. The first heating wire is configured to be disposed corresponding to a main grid printing area of the battery cell, and the second heating wire is configured to be disposed corresponding to a secondary grid printing area of the battery cell.
7. The drying device according to claim 6, characterized in that: The number of the main grid printing area and the number of the secondary grid printing area are both multiple; The placement surface has a plurality of first heating areas and a plurality of second heating areas, the width of the first heating area is greater than the width of the second heating area, each of the first heating areas is configured to correspond to each of the main grid printing areas, and each of the second heating areas is configured to correspond to each of the secondary grid printing areas; The first heating wire is arranged on the first heating area, the second heating wire is arranged on the second heating area, and the number of the first heating wires on the first heating area is greater than the number of the second heating wires on the second heating area.
8. A battery cell processing device, characterized in that: It comprises an exhaust mechanism and the drying device according to any one of claims 1 to 7, wherein the exhaust mechanism is connected to the exhaust port.
9. The battery cell processing device according to claim 8, characterized in that: The battery cell processing device also includes: a hot air mechanism, the hot air mechanism being connected to the air inlet, the hot air mechanism being configured to heat the gas input from the air inlet, and the temperature of the gas when input from the air inlet is lower than the heating temperature of the heating element; And / or, a conveying mechanism, the heating platform is arranged on the conveying mechanism, the conveying mechanism is configured to convey the heating platform into the drying chamber, and to convey the heating platform located in the drying chamber to the outside of the box; the conveying direction of the conveying mechanism is opposite to the exhaust direction of the exhaust mechanism in the drying chamber.
10. A battery production line, characterized in that: It comprises the drying equipment as described in any one of claims 1 to 7, or the battery cell processing device as described in claim 8 or 9.