Drying equipment, battery processing equipment and battery production line

Abstract

The utility model is applicable to the technical field of batteries, and provides drying equipment, battery processing equipment and a battery production line, and the drying equipment comprises a drying device and a first suction assembly. The drying device comprises a first box body and a heating structure arranged in the first box body, and the heating structure is used for drying a material belt passing through the interior of the first box body. The first suction assembly is connected to the first box body and used for conducting suction operation on the first box body. And the heating structure is arranged in the first box body, so that the material belt can be baked and dried in the first box body through the heating structure. The first suction assembly is connected to the first box body, so that the first suction assembly can suck the first box body, moisture, sulfide and the like in the first box body can be sucked away, and the first box body can be close to a vacuum state. Therefore, the risks of oxidation and corrosion of the material belt in the baking and drying process in the first box body are reduced, and the quality of the pole piece is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and more particularly relates to a drying device, a battery processing device and a battery production line. BACKGROUND

[0002] From the development of market situation, the application of the battery device is more and more extensive. The battery device is not only applied to the energy storage systems such as hydroelectric, thermal, wind and solar power stations, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of the battery device, the market demand is also increasing.

[0003] In the related art, the battery device can include a plurality of battery monomers, the battery monomer can include a shell and an electrode assembly arranged in the shell, and the electrode assembly includes a plurality of pole pieces.

[0004] In the processing process of the battery, the pole piece usually needs to be dried. However, in some cases, the pole piece is prone to oxidation and corrosion during the drying process, which makes it difficult to guarantee the quality of the pole piece.

[0005] The above statements are only used to provide background technical information related to the application, and do not necessarily constitute prior art. CONTENT OF THE UTILITY MODEL

[0006] In view of the above problems, the embodiments of the application provide a drying device, a battery processing device and a battery production line, which can improve the quality of the pole piece.

[0007] In a first aspect, the embodiments of the application provide a drying device, comprising:

[0008] The drying device comprises a first box body and a heating structure arranged in the first box body, and the heating structure is used for drying the material belt passing through the first box body.

[0009] The first suction assembly is connected to the first box body and is used for suction operation of the first box body.

[0010] The drying device provided by the embodiments of the application is arranged in the first box body through the heating structure, so that the material belt can be baked and dried through the heating structure in the first box body. The first suction assembly is connected to the first box body, so that the first suction assembly can perform suction on the first box body, so as to remove the moisture and sulfides in the first box body, so that the first box body can approach a vacuum state. In this way, it is helpful to reduce the risk of oxidation and corrosion of the material belt during the baking and drying process in the first box body, so as to improve the quality of the pole piece.

[0011] In some embodiments, the first suction assembly comprises:

[0012] The first air extractor;

[0013] The first air extraction pipe is connected between the first air extractor and the first box.

[0014] The first switch structure is arranged on the first air extraction pipe and is used for opening or closing the first air extraction pipe.

[0015] In this way, the first suction assembly can perform suction operation on the first box before the baking and drying of the material belt, and can maintain the environmental state of the first box during the baking and drying of the material belt, so as to further reduce the risk of oxidation and corrosion of the material belt.

[0016] In some embodiments, the number of the first suction assemblies is multiple, and the multiple first suction assemblies are all connected to the first box.

[0017] In this way, the multiple first suction assemblies can perform suction operation on different positions of the first box, which helps to improve the suction efficiency of the first box and the effect of the first box approaching to a vacuum state. In this way, the baking and drying efficiency of the material belt can be improved, and the oxidation and corrosion risk of the pole piece can be reduced, and the quality of the pole piece can be further improved.

[0018] In some embodiments, the drying device further comprises a first communication pipe connected to the first box and used for communicating with the external environment, and a second switch structure arranged on the first communication pipe and used for opening or closing the first communication pipe.

[0019] In this way, when the baking and drying operation is not needed, the second switch structure can be opened to make the air in the external environment enter the first box through the first communication pipe, so that the first box can maintain the atmospheric pressure balance between the inside and the outside, thereby making the first box door of the first box openable and closable, and improving the problem that the first box door of the first box cannot be opened after the first suction assembly performs suction on the first box.

[0020] In some embodiments, the heating structure comprises an infrared heater.

[0021] In this way, the heating structure can heat the material belt without contacting the material belt, so that the material belt can be baked and dried. In this way, the problem that the material belt cannot be fed due to the arrangement of the heating structure can be improved.

[0022] In some embodiments, the first box comprises a first inner cavity region and a second inner cavity region arranged in sequence along a first direction and used for sequentially passing the material belt, the heating structure is arranged in the first inner cavity region and the second inner cavity region, the distribution density of the heating structure in the first inner cavity region is greater than the distribution density of the heating structure in the second inner cavity region.

[0023] In this way, the distribution density of the heating structure in the first box body is large first and small last in the conveying direction of the material belt, so that the heating capacity of the first box body is large first and small last. In this way, during the conveying of the material belt, the material belt can first pass through the first inner cavity region and be heated to a preset temperature under the heating of the heating structure with large heating capacity in the first inner cavity region, and then pass through the second inner cavity region and maintain the temperature under the heating of the heating structure with small heating capacity in the second inner cavity region, so that the drying effect can be efficiently achieved in the state of maintaining the temperature, thereby improving the baking and drying effect of the pole piece and improving the quality of the pole piece.

[0024] In some embodiments, the number of heating structures in the first inner cavity region is greater than the number of heating structures in the second inner cavity region.

[0025] In this way, the distribution density of the heating structure in the first inner cavity region is greater than the distribution density of the heating structure in the second inner cavity region, thereby helping to improve the baking and drying effect of the pole piece and improving the quality of the pole piece.

[0026] In some embodiments, a plurality of first guide rollers distributed along the first direction and a plurality of second guide rollers distributed along the first direction are arranged in the first box body, the first guide rollers and the second guide rollers are distributed along the second direction, the first direction and the second direction are perpendicular, each first guide roller and each second guide roller are alternately distributed along the first direction and are used to guide the material belt in sequence, and the first inner cavity region and the second inner cavity region are both provided with the plurality of first guide rollers and the plurality of second guide rollers.

[0027] At least one heating structure is arranged between two first guide rollers adjacent along the first direction, and / or at least one heating structure is arranged between two second guide rollers adjacent along the first direction.

[0028] In this way, the heating structure can sufficiently heat the material belt. Specifically, when the material belt passes through the first inner cavity region, the heating structure sufficiently heats the material belt to efficiently heat the material belt to a preset temperature. When the material belt passes through the second inner cavity region, the heating structure sufficiently heats the material belt to effectively maintain the temperature of the material belt, thereby helping to improve the drying effect of the material belt.

[0029] In some embodiments, in the second direction, the heating structure is arranged between the first guide roller and the second guide roller.

[0030] In this way, the heating structure can be sufficiently close to the material belt, thereby sufficiently heating the material belt. In this way, the material belt can be efficiently heated to a preset temperature and can effectively maintain the temperature, thereby helping to improve the drying effect of the material belt.

[0031] In some embodiments, the drying device comprises a plurality of first heating assemblies and a plurality of second heating assemblies, the first heating assemblies are arranged in the first inner cavity region, the second heating assemblies are arranged in the second inner cavity region, the plurality of first heating assemblies are distributed along the first direction, the plurality of second heating assemblies are distributed along the first direction, the first heating assemblies are arranged between two adjacent first guide rollers or two adjacent second guide rollers, and the second heating assemblies are arranged between two adjacent first guide rollers or two adjacent second guide rollers.

[0032] The first heating assembly comprises a plurality of heating structures, and the second heating assembly comprises at least one heating structure, and the number of heating structures of the first heating assembly is greater than the number of heating structures of the second heating assembly.

[0033] By increasing the number of heating structures of the first heating assembly compared with the number of heating structures of the second heating assembly, the distribution density of the heating structures in the first inner cavity region is greater than the distribution density of the heating structures in the second inner cavity region, thereby improving the baking and drying effect of the pole piece and improving the quality of the pole piece.

[0034] In some embodiments, in the first heating assembly, the plurality of heating structures are distributed along the second direction.

[0035] In this way, the first heating assembly can be close to the material belt, thereby sufficiently heating the material belt, so that the material belt can be efficiently heated to the preset temperature, thereby improving the drying efficiency of the material belt.

[0036] In some embodiments, the first box body further comprises a third inner cavity region, the first inner cavity region, the second inner cavity region and the third inner cavity region are sequentially arranged along the first direction and used for sequentially passing the material belt, no heating structure is arranged in the third inner cavity region, and the third inner cavity region is provided with a plurality of first guide rollers and a plurality of second guide rollers.

[0037] In this way, the material belt can first pass through the first heating assembly and be efficiently heated to the preset temperature under the heating action of the first heating assembly, then pass through the second heating assembly and maintain the temperature under the heating action of the second heating assembly to achieve the drying effect, and then pass through the third inner cavity region and continue to achieve the drying effect without heating. In this way, the material belt can be regularly baked and dried in the drying device, thereby improving the drying effect.

[0038] In some embodiments, the first box body is provided with a first temperature sensor, and the first temperature sensor is used for detecting the temperature of the material belt.

[0039] The temperature of the material belt is detected by the first temperature sensor, so that the heating temperature rise of the material belt in the first box body can be obtained. According to the temperature of the material belt, the running speed of the material belt can be controlled, so that the material belt can be efficiently heated to the preset temperature and dried, thereby improving the drying effect and efficiency.

[0040] In some embodiments, the first box body is provided with a first temperature sensor, which is arranged between the first inner cavity region and the second inner cavity region and is used for detecting the temperature of the material belt.

[0041] By arranging the first temperature sensor between the first inner cavity region and the second inner cavity region, the temperature of the material belt after passing through the first inner cavity region can be obtained, and it can be determined whether the material belt is heated to the preset temperature after passing through the first heating assembly. Therefore, the running speed of the material belt can be controlled so that the material belt is heated to the preset temperature after passing through the first inner cavity region, so that the material belt can be efficiently heated to the preset temperature and dried, thereby improving the drying effect and efficiency.

[0042] In some embodiments, the heating structure is provided with a second temperature sensor, and the second temperature sensor is used for detecting the temperature of the heating structure, and the heating structure is used for heating according to the detection result of the second temperature sensor.

[0043] In this way, the temperature of the heating structure can be controlled, and the heating structure can be heated to a predetermined temperature based on the second temperature sensor, thereby improving the drying effect.

[0044] In some embodiments, the heating structure is further provided with a third temperature sensor arranged at intervals with the second temperature sensor, and the third temperature sensor is used for detecting the temperature of the heating structure and monitoring the second temperature sensor.

[0045] In this way, the second temperature sensor can be monitored, thereby facilitating the maintenance of the drying device.

[0046] In some embodiments, the drying device further comprises a winding device, the winding device comprising a second box body and a winding mechanism arranged in the second box body, the winding mechanism being used for winding the material belt output from the first box body.

[0047] In this way, after the material belt is baked and dried by the drying device, the material belt can be wound by the winding device.

[0048] In some embodiments, the drying device further comprises a second suction assembly connected to the second box body and used for performing suction operation on the second box body.

[0049] The first box and the second box in communication with each other can efficiently achieve the suction effect through the first suction assembly and the second suction assembly. In this way, the moisture and sulfides in the first box and the second box can be efficiently sucked away, so that the first box and the second box can efficiently approach a vacuum state, so that the material belt can be baked and dried in an environment approaching a vacuum state. In this way, it helps to reduce the risk of oxidation and corrosion of the material belt, thereby improving the quality of the pole piece, thereby improving the quality and reliability of the battery device.

[0050] In some embodiments, the second suction assembly comprises:

[0051] A second suction fan;

[0052] A second suction pipe connected between the second suction fan and the second box;

[0053] A third switch structure provided on the second suction pipe and used for opening or closing the second suction pipe.

[0054] In this way, the first suction assembly and the second suction assembly can perform suction operation on the first box and the second box before the material belt is baked and dried, and can maintain the environmental state of the first box and the second box during the baking and drying heating process of the material belt, thereby further reducing the risk of oxidation and corrosion of the material belt.

[0055] In some embodiments, the drying device further comprises a second communication pipe connected to the second box and used for communicating with the external environment; the second communication pipe is provided with a fourth switch structure used for opening or closing the second communication pipe.

[0056] In this way, when the baking and drying operation is not needed, the fourth switch structure can be opened to allow the air in the external environment to enter the second box through the second communication pipe, so that the second box can maintain the atmospheric pressure balance between the inside and the outside, thereby allowing the second box door of the second box to open and close, and improving the problem that the second box door of the second box cannot be opened when the second box is in a negative pressure state.

[0057] In some embodiments, a first channel pipe is provided between the first box and the second box, and the first channel pipe is used for outputting the material belt from the first box to the second box.

[0058] By providing the first channel pipe between the first box and the second box, the first box and the second box are in communication, which can reduce the mutual influence between the environmental states of the first box and the second box, thereby reducing the influence of the heating structure on the winding device.

[0059] In some embodiments, the second box further comprises a cooling mechanism, which is provided between the first box and the winding mechanism and is used for cooling the material belt.

[0060] In this way, after the material belt is baked and dried in the drying device, the material belt passes through the cooling mechanism for cooling before being wound on the winding mechanism, which helps to improve the cooling effect of the dried material belt and improve the quality of the pole piece.

[0061] In some embodiments, the cooling mechanism includes cooling rollers arranged in the second box body, the cooling rollers are used to pass through the material belt in sequence, and the cooling rollers are used to contain cooling liquid.

[0062] In this way, the cooling mechanism can efficiently achieve the cooling effect of the material belt.

[0063] In some embodiments, the drying device further includes a unwinding device, the unwinding device includes a third box body and a unwinding mechanism arranged in the third box body, the unwinding mechanism is used to output the material belt to the first box body.

[0064] In this way, the material belt can be unwound by the unwinding device.

[0065] In some embodiments, the drying device further includes a third suction assembly, the third suction assembly is connected to the third box body and is used to perform suction operation on the third box body.

[0066] Through the arrangement of the first suction assembly, the second suction assembly and the third suction assembly, the first box body, the second box body and the third box body in communication with each other can efficiently achieve the suction effect. In this way, the moisture, sulfide and the like in the first box body, the second box body and the third box body can be efficiently sucked away, so that the first box body, the second box body and the third box body can efficiently approach a vacuum state, so that the material belt can be baked and dried in an environment approaching a vacuum state. In this way, it helps to reduce the risk of oxidation and corrosion of the material belt, thereby improving the quality of the pole piece and improving the quality and reliability of the battery device.

[0067] In some embodiments, the third suction assembly includes:

[0068] a third suction fan;

[0069] a third suction duct connected between the third suction fan and the third box body;

[0070] a fifth switch structure arranged on the third suction duct and used to open or close the third suction duct.

[0071] In this way, the first suction assembly, the second suction assembly and the third suction assembly can perform suction operation on the first box body, the second box body and the third box body before the material belt is baked and dried, and can maintain the environmental state of the first box body, the second box body and the third box body during the baking and drying heating process of the material belt, thereby further reducing the risk of oxidation and corrosion of the material belt.

[0072] In some embodiments, the drying device further comprises a third communicating pipe connected to the third box and used for communicating with the external environment; and the third communicating pipe is provided with a sixth switch structure used for opening or closing the third communicating pipe.

[0073] In this way, when the baking and drying operations are not needed, the sixth switch structure can be opened to enable the air in the external environment to enter the third box through the third communicating pipe, so that the third box can maintain the atmospheric pressure balance between the inside and outside, thereby enabling the third box door of the third box to be opened and closed, and improving the problem that the third box door of the third box cannot be opened due to the negative pressure state of the third box.

[0074] In some embodiments, a second channel pipe is arranged between the first box and the third box, and the second channel pipe is used for outputting the material belt from the unwinding mechanism to the first box.

[0075] By arranging the second channel pipe between the first box and the third box, the first box and the third box are communicated, so that the mutual influence between the environmental states of the first box and the third box can be reduced, thereby reducing the influence of the heating structure on the unwinding device.

[0076] In a second aspect, the embodiments of the present application provide a battery processing device, comprising the drying device.

[0077] The battery processing device provided by the embodiments of the present application can improve the quality of the electrode sheet and the quality of the battery monomer or battery device by using the drying device related to the above embodiments.

[0078] In some embodiments, the battery processing device further comprises:

[0079] An imaging device is configured to process the electrode sheet into an electrode assembly.

[0080] An assembly device is configured to assemble the electrode assembly into a battery monomer.

[0081] In this way, the battery monomer can be processed.

[0082] In a third aspect, the embodiments of the present application provide a battery production line, comprising the battery processing device.

[0083] The battery production line provided by the embodiments of the present application can improve the quality of the battery monomer or battery device by using the battery processing device related to the above embodiments.

[0084] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0085] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0086] Figure 1 The schematic diagram of the battery processing equipment provided by some embodiments of the present application is shown in the figure.

[0087] Figure 2 The perspective structural diagram of the drying equipment provided by some embodiments of the present application is shown in the figure.

[0088] Figure 3 The opening schematic diagram of the drying equipment provided by some embodiments of the present application is shown in the figure. Figure 2

[0089] The opening schematic diagram of the drying device and the first suction assembly of the drying equipment provided by some embodiments of the present application is shown in the figure. Figure 4 Figure 2 The partial structural diagram of the drying equipment provided by some embodiments of the present application is shown in the figure.

[0090] Figure 5 Figure 4 The perspective structural diagram of the heating structure of the drying equipment provided by some embodiments of the present application is shown in the figure.

[0091] Figure 6 The opening schematic diagram of the winding device of the drying equipment provided by some embodiments of the present application is shown in the figure. Figure 2

[0092] The opening schematic diagram of the unwinding device of the drying equipment provided by some embodiments of the present application is shown in the figure. Figure 7 Figure 2 The opening schematic diagram of the unwinding device of the drying equipment provided by some embodiments of the present application is shown in the figure.

[0093] Figure 8 Figure 2 The opening schematic diagram of the unwinding device of the drying equipment provided by some embodiments of the present application is shown in the figure.

[0094] In the figure, various reference signs represent:

[0095] ​​​​1000 - battery processing equipment; 100 - drying equipment; 200 - forming equipment; 300 - assembling equipment; 400 - stacking equipment; 10 - drying device; 101 - first inner cavity region; 102 - second inner cavity region; 103 - third inner cavity region; 11 - first box; 111 - first box main body; 112 - first box door; 12a - first heating assembly; 12b - second heating assembly; 121 - heating structure; 13 - first guide roller; 14 - second guide roller; 15 - first temperature sensor; 16 - second temperature sensor; 17 - third temperature sensor; 20 - first suction assembly; 21 - first suction fan; 22 - first suction duct; 30 - first communication duct; 40 - winding device; 41 - second box; 411 - second box main body; 412 - second box door; 42 - winding mechanism; 43 - cooling mechanism; 431 - cooling roller; 50 - second suction assembly; 51 - second suction fan; 52 - second suction duct; 60 - second communication duct; 70 - unwinding device; 71 - third box; 711 - third box main body; 712 - third box door; 72 - unwinding mechanism; 80 - third suction assembly; 81 - third suction fan; 82 - third suction duct; 90 - third communication duct; 110 - first passage duct; 120 - second passage duct; m - material belt; Y - first direction; Z - second direction; X - third direction. DETAILED DESCRIPTION

[0096] Embodiments of the present application are described below in detail with reference to examples thereof that are illustrated in the accompanying drawings, wherein like or similar elements are denoted by the same or similar reference signs throughout the drawings. The embodiments described below through reference to the drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0097] All embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions, if not specifically stated.

[0098] All technical features and optional technical features of the embodiments of the present application can be combined with each other to form new technical solutions, if not specifically stated.

[0099] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0100] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features.

[0101] In the description of the embodiments of the present application, the meaning of "multiple" is more than two, and "more than two" includes two, unless otherwise explicitly specified and limited. Accordingly, the meaning of "multiple groups" is more than two groups, including two groups.

[0102] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0103] In the description of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists, A and B exist, and B exists. In addition, in the present application, the character " / " generally represents that the front and rear associated objects have an "or" relationship.

[0104] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "adjacent" and "adjacent" mean close in position. For example, A1, A2 and B three components, the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is adjacent to B, and B is adjacent to A2, in other words, A2 is adjacent to B. For example, when there are multiple C components, the multiple C components are C1, C2……CN, and one of the C components, such as C2, is closer to the B component than the other C components, then B is adjacent to C2, and C2 is adjacent to B, in other words, C2 is adjacent to B.

[0105] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it and equivalent components can be substituted therefor without departing from the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any way, as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0106] From the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to the energy storage system such as hydroelectric power station, thermal power station, wind power station and solar power station, but also widely applied to electric vehicles such as electric bicycle, electric motorcycle and electric automobile, and many fields such as military equipment and aerospace. With the continuous expansion of the application field of battery device, the demand of its market is also increasing.

[0107] In the related art, the battery device can include a plurality of battery cells, and the battery cell refers to the smallest unit of storing and outputting electric energy. The battery cell can include a case and an electrode assembly provided in the case, and the electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of winding and stacking. The electrode assembly includes a plurality of electrode tabs, and the electrode tab includes a current collector and an active material layer coated on the current collector. The plurality of electrode tabs can include positive electrode tabs and negative electrode tabs. When the electrode assembly is in a wound structure, the plurality of electrode tabs are wound and arranged. When the electrode assembly is in a stacked structure, the plurality of electrode tabs are stacked and arranged. When the electrode assembly is in a hybrid structure of winding and stacking, a part of the plurality of electrode tabs are wound and arranged, and the other part of the plurality of electrode tabs are stacked and arranged.

[0108] In the processing of the battery, after the current collector of the electrode tab is coated with the active material layer, the electrode tab usually needs to be dried. However, in some cases, the electrode tab is prone to oxidation and corrosion under the action of moisture, sulfide, etc. during the drying process, so that the quality of the electrode tab is difficult to guarantee.

[0109] Based on the above considerations, the embodiments of the present application provide a drying device, a battery processing device and a battery production line. The heating structure is arranged in the first box, so that the material belt can be baked and dried by the heating structure in the first box. The first suction assembly is connected to the first box, so that the first suction assembly can perform suction on the first box. In this way, the moisture, sulfide, etc. in the first box can be sucked away, so that the first box can approach a vacuum state. In this way, it helps to reduce the risk of oxidation and corrosion of the material belt during the baking and drying process in the first box, so as to improve the quality of the electrode tab.

[0110] It should be noted that the drying device provided by the embodiments of the present application is developed based on the oxidation and corrosion problems of the electrode tab during the baking and drying process, but the use scenario of the drying device is not limited to this. Understandably, the drying device can be used for baking and drying the electrode tab, and can also be used for baking and drying other material belts.

[0111] The battery processing device related by the embodiments of the present application is mainly used for processing the battery cell.

[0112] Please refer to Figure 1 , Figure 1A schematic view of a battery processing apparatus 1000 is provided for some embodiments of the present application, the battery processing apparatus 1000 comprises a drying apparatus 100, the drying apparatus 100 is configured to perform baking and drying operations on the electrode tab.

[0113] The drying apparatus 100 can be configured to perform baking and drying operations on the electrode tab before or after the electrode tab is die-cut.

[0114] In some embodiments, as shown in Figure 1 The battery processing apparatus 1000 can further comprise a forming apparatus 200, the forming apparatus 200 is configured to process the electrode tab into an electrode assembly.

[0115] In some embodiments, as shown in Figure 1 The battery processing apparatus 1000 can further comprise an assembling apparatus 300, the assembling apparatus 300 is configured to assemble the electrode assembly into a battery cell.

[0116] Specifically, the assembling apparatus 300 is configured to assemble the electrode assembly, a housing, etc. into a battery cell.

[0117] In some embodiments, as shown in Figure 1 The battery processing apparatus 1000 can further comprise a stacking apparatus 400, the stacking apparatus 400 is configured to stack a plurality of battery cells into a battery device.

[0118] Please refer to Figures 2 to 4 , wherein, Figure 2 A perspective view of the drying apparatus 100 is provided for some embodiments of the present application, Figure 3 A perspective view of the drying apparatus 100 is provided for some embodiments of the present application, Figure 2 An open schematic view of the drying apparatus 100 is provided for some embodiments of the present application, Figure 4 An open schematic view of the drying apparatus 100 is provided for some embodiments of the present application, Figure 2 The drying apparatus 100 comprises a drying device 10 and a first suction assembly 20. The drying device 10 comprises a first box body 11 and a heating structure 121 arranged in the first box body 11, the heating structure 121 is configured to dry the material belt m passing through the first box body 11. The first suction assembly 20 is connected to the first box body 11, and the first suction assembly 20 is configured to perform suction operation on the first box body 11.

[0119] The drying device 10 refers to a device of the drying apparatus 100 configured to perform baking and drying operations on the material belt m.

[0120] The first box body 11 is a box structure of the drying device 10, and the first box body 11 has an inner cavity, and the heating structure 121 is arranged in the inner cavity of the first box body 11.

[0121] The heating structure 121 refers to a structure with heating performance. In some possible designs, the heating structure 121 can include an infrared heater. In some possible designs, the heating structure 121 can include a structure combining a heating element and a radiation plate, and the heating element is a resistive load such as an electric heating wire, a heating net, or the like that generates heat under power-on condition.

[0122] Understandably, during the belt feeding process, the material belt m can pass through the inner cavity of the first box body 11, and the heating structure 121 heats the material belt m in the first box body 11 to achieve the roasting and drying effect of the material belt m under the heating action of the heating structure 121.

[0123] The first suction assembly 20 refers to an assembly structure with suction performance.

[0124] The first suction assembly 20 is connected to the first box body 11, so that the first suction assembly 20 and the inner cavity of the first box body 11 are in communication. In this way, the first suction assembly 20 can perform suction on the inner cavity of the first box body 11 during the suction action of the first suction assembly 20.

[0125] The drying device 100 provided by the embodiment of the present application is arranged in the first box body 11 through the heating structure 121, so that the material belt m can be roasted and dried in the first box body 11 through the heating structure 121. The first suction assembly 20 is connected to the first box body 11, so that the first suction assembly 20 can perform suction on the first box body 11, so that the moisture and sulfides in the first box body 11 can be sucked away, so that the first box body 11 can approach a vacuum state, so that the material belt m can be roasted and dried in an environment approaching a vacuum state. In this way, it is helpful to reduce the risk of oxidation and corrosion of the material belt m during the roasting and drying process in the first box body 11, so as to improve the quality of the pole piece, thereby improving the quality and reliability of the battery device.

[0126] Understandably, during the working process of the drying device 100, the first suction assembly 20 can first perform suction on the first box body 11, and then the material belt m is fed into the first box body 11, so that the heating structure 121 roasts and dries the material belt m.

[0127] In some embodiments, referring to Figures 2 to 4 , the first suction assembly 20 includes a first suction fan 21, a first suction duct 22, and a first switch structure. The first suction duct 22 is connected between the first suction fan 21 and the first box body 11, and the first switch structure is arranged on the first suction duct 22. The first switch structure is used to open or close the first suction duct 22.

[0128] The first suction fan 21 refers to a device with suction performance.

[0129] The first air suction pipe 22 refers to a pipe connected between the first air suction fan 21 and the first box 11, so that the first air suction pipe 22 can be communicated between the first box 11 and the first air suction fan 21.

[0130] The first switch structure is a switch structure for opening or closing the first air suction pipe 22. The first switch structure can be a mechanical valve or an electric valve, for example, the first switch structure can be a solenoid valve. When the first switch structure opens the first air suction pipe 22, the first air suction pipe 22 is communicated between the first box 11 and the first air suction fan 21. When the first switch structure closes the first air suction pipe 22, the first box 11 and the first air suction fan 21 are not communicated.

[0131] It can be understood that during the operation of the drying device 100, the first switch structure can be opened first, and then the first air suction fan 21 is driven to work, so that the first air suction fan 21 performs air suction operation on the first box 11 through the first air suction pipe 22. In this way, the moisture, sulfides and the like in the first box 11 can be sucked into the first air suction fan 21 through the first air suction pipe 22. Then, the first switch structure is closed to prevent air outside the first box 11 from entering the first box 11 through the first air suction pipe 22 as much as possible, so as to keep the first box 11 in a state close to vacuum. Then, the material belt m starts to run, and the heating structure 121 performs baking and drying operation on the material belt m.

[0132] In this way, the first suction assembly 20 can perform suction operation on the first box 11 before the material belt m is baked and dried, and can maintain the environmental state of the first box 11 during the baking and drying of the material belt m, so as to further reduce the risk of oxidation and corrosion of the material belt m.

[0133] In some embodiments, referring to Figures 2 to 4 , the number of the first suction assemblies 20 is multiple, and the multiple first suction assemblies 20 are all connected to the first box 11.

[0134] It can be understood that the first air suction pipes 22 of the multiple first suction assemblies 20 are spaced apart and connected to the first box 11 and are all communicated with the first box 11.

[0135] In this way, the multiple first suction assemblies 20 can perform suction operation on different positions of the first box 11, which can help to improve the suction efficiency of the first box 11 and improve the effect of the first box 11 approaching a vacuum state. In this way, the baking and drying efficiency of the material belt m can be improved, and the risk of oxidation and corrosion of the pole piece can be reduced, and the quality of the pole piece can be further improved.

[0136] In some embodiments, referring to Figures 2 to 4The first box body 11 comprises a first box main body 111 and a first box door 112. The first box door 112 is sealed to the first box main body 111. The first box main body 111 and the first box door 112 enclose an inner cavity of the first box body 11. The first box body 11 can open or close the first box main body 111.

[0137] The first box door 112 is provided to facilitate the maintenance of the drying device 10.

[0138] In some embodiments, referring to Figures 2 to 4 The drying device 100 further comprises a first communication pipe 30 connected to the first box body 11 and used for communicating with the external environment. The first communication pipe 30 is provided with a second switch structure used for opening or closing the first communication pipe 30.

[0139] It can be understood that one end of the first communication pipe 30 is connected to the first box body 11 and communicates with the inner cavity of the first box body 11. The other end of the first communication pipe 30 is used for communicating with the external environment.

[0140] The second switch structure can be a switch structure used for opening or closing the first communication pipe 30. The second switch structure can be a mechanical valve or an electric valve. As an example, the second switch structure can be a solenoid valve. As an example, the second switch structure is a rubber plug used for plugging the end of the first communication pipe 30 away from the first box body 11.

[0141] When the second switch structure opens the first communication pipe 30, the first communication pipe 30 communicates with the first box body 11 and the external environment, and the air of the external environment can enter the first box body 11 through the first communication pipe 30. When the second switch structure closes the first communication pipe 30, the first box body 11 and the external environment are not communicated, so that the first box body 11 can maintain the environmental state thereof.

[0142] In this way, when baking and drying operations are needed, the second switch structure can be closed to maintain the environmental state of the first box body 11, for example, to maintain the state of the first box body 11 approaching a vacuum, thereby reducing the risk of oxidation and corrosion of the pole piece during baking and drying.

[0143] When baking and drying operations are not needed, the second switch structure can be opened to allow the air of the external environment to enter the first box body 11 through the first communication pipe 30, so that the first box body 11 can maintain the atmospheric pressure balance between the inside and the outside, thereby enabling the first box door 112 of the first box body 11 to open and close, and improving the problem that the first box door 112 of the first box body 11 cannot be opened after the first suction assembly 20 sucks the first box body 11 to a negative pressure state.

[0144] In some embodiments, the heating structure 121 comprises an infrared heater.

[0145] In this way, the heating structure 121 can heat the material belt m without contacting the material belt m, so that the material belt m can be baked and dried. In this way, the problem that the arrangement of the heating structure 121 causes the material belt m to be difficult to run can be improved.

[0146] In some embodiments, please refer to Figures 3 to 5 wherein, Figure 5 is Figure 4 a partial structural view of the first box body 11. The first box body 11 comprises a first inner cavity region 101 and a second inner cavity region 102, which are distributed in sequence along the first direction Y and are used to pass the material belt m in sequence. The heating structure 121 is arranged in the first inner cavity region 101 and the second inner cavity region 102, and the distribution density of the heating structure 121 in the first inner cavity region 101 is greater than that in the second inner cavity region 102.

[0147] The first inner cavity region 101 and the second inner cavity region 102 are two regions of the inner cavity of the first box body 11.

[0148] The first direction Y is the approximate running direction of the material belt m in the first box body 11, which is a one-way direction. It can be understood that the first inner cavity region 101 and the second inner cavity region 102 are distributed in sequence along the running direction of the material belt m, so that the material belt m can run through the first inner cavity region 101 and the second inner cavity region 102 in the running process.

[0149] By arranging the heating structure 121 in the first inner cavity region 101 and the second inner cavity region 102, the material belt m can be heated by the heating structure 121 in the first inner cavity region 101 when passing through the first inner cavity region 101, and the material belt m can be heated by the heating structure 121 in the second inner cavity region 102 when passing through the second inner cavity region 102.

[0150] Wherein, the boundary between the first inner cavity region 101 and the second inner cavity region 102 is not unique, as long as the distribution density of the heating structure 121 in the first inner cavity region 101 is greater than that in the second inner cavity region 102.

[0151] The ratio of the sum of the projection areas of all the heating structures 121 in the first inner cavity region 101 to the projection area of the first inner cavity region 101 can be the distribution density of the heating structures 121 in the first inner cavity region 101 in the same projection plane perpendicular to the third direction X. The ratio of the sum of the projection areas of all the heating structures 121 in the second inner cavity region 102 to the projection area of the second inner cavity region 102 can be the distribution density of the heating structures 121 in the second inner cavity region 102 in the same projection plane perpendicular to the third direction X.

[0152] The third direction X is perpendicular to the first direction Y and perpendicular to the second direction Z.

[0153] In this way, the distribution density of the heating structures 121 in the first box body 11 is first large and then small in the feeding direction of the material belt m, so that the heating capacity of the first box body 11 is first large and then small. In this way, during the feeding of the material belt m, the material belt m can first pass through the first inner cavity region 101 and be heated to a preset temperature under the heating action of the larger heating capacity of the heating structures 121 in the first inner cavity region 101, and then pass through the second inner cavity region 102 and realize temperature keeping under the heating action of the smaller heating capacity of the heating structures 121 in the second inner cavity region 102, so that the drying effect can be realized efficiently in a state of maintaining the temperature, thereby improving the baking and drying effect of the pole piece and improving the quality of the pole piece.

[0154] In some embodiments, please refer to Figures 3 to 5 The number of the heating structures 121 in the first inner cavity region 101 is greater than the number of the heating structures 121 in the second inner cavity region 102.

[0155] In this way, the distribution density of the heating structures 121 in the first inner cavity region 101 is greater than the distribution density of the heating structures 121 in the second inner cavity region 102, thereby helping to improve the baking and drying effect of the pole piece and improve the quality of the pole piece.

[0156] In some embodiments, please refer to Figures 3 to 5The first box body 11 is provided with a plurality of first guide rollers 13 distributed along the first direction Y and a plurality of second guide rollers 14 distributed along the first direction Y. The first guide rollers 13 and the second guide rollers 14 are distributed along the second direction Z, and the first direction Y and the second direction Z are perpendicular. The first guide rollers 13 and the second guide rollers 14 are alternately distributed along the first direction Y, and the first guide rollers 13 and the second guide rollers 14 are used to guide the material belt m in turn. The first inner cavity region 101 and the second inner cavity region 102 are both provided with a plurality of first guide rollers 13 and a plurality of second guide rollers 14. At least one heating structure 121 is arranged between two first guide rollers 13 adjacent along the first direction Y, and / or at least one heating structure 121 is arranged between two second guide rollers 14 adjacent along the first direction Y.

[0157] The first guide rollers 13 and the second guide rollers 14 are guide rollers for guiding the material belt m.

[0158] It can be understood that, in the running direction of the material belt m, the plurality of first guide rollers 13 and the plurality of second guide rollers 14 are regularly distributed along the first direction Y in the order of first guide roller 13, second guide roller 14, first guide roller 13, second guide roller 14, first guide roller 13, second guide roller 14. In this way, the material belt m alternately passes around the first guide roller 13, the second guide roller 14, the first guide roller 13, the second guide roller 14, the first guide roller 13, the second guide roller 14.

[0159] By adopting the above technical scheme, when the material belt m passes through the first inner cavity region 101, the material belt m passes around the plurality of first guide rollers 13 and the plurality of second guide rollers 14, so that the heating structure 121 can sufficiently heat the material belt m, so as to efficiently heat the material belt m to the preset temperature when the material belt m passes through the first inner cavity region 101. When the material belt m passes through the second inner cavity region 102, the material belt m passes around the plurality of first guide rollers 13 and the plurality of second guide rollers 14, so that the heating structure 121 can sufficiently heat the material belt m, so that the material belt m can maintain the temperature when heated to the preset temperature, so as to improve the drying effect.

[0160] By arranging at least one heating structure 121 between two first guide rollers 13 adjacent along the first direction Y, and / or at least one heating structure 121 between two second guide rollers 14 adjacent along the first direction Y, the heating structure 121 can be sufficiently close to the material belt m, so as to sufficiently heat the material belt m. Specifically, when the material belt m passes through the first inner cavity region 101, the heating structure 121 sufficiently heats the material belt m, so as to efficiently heat the material belt m to the preset temperature. When the material belt m passes through the second inner cavity region 102, the heating structure 121 sufficiently heats the material belt m, so as to effectively maintain the temperature of the material belt m, which helps to improve the drying effect of the material belt m.

[0161] In some embodiments, the first guide roller 13 and the second guide roller 14 are both rotatably connected to the follower roller of the first housing 11, which can protect the electrode sheet and improve the smoothness of the electrode sheet's conveyor belt.

[0162] In some embodiments, please refer to the following: Figures 3 to 5 In the second direction Z, the heating structure 121 is disposed between the first guide roller 13 and the second guide roller 14.

[0163] This configuration allows the heating structure 121 to be positioned close enough to the material strip m, thus ensuring sufficient heating of the strip m. This enables the strip m to efficiently heat up to the preset temperature and maintain that temperature effectively, contributing to improved drying performance.

[0164] In some embodiments, please refer to the following: Figures 3 to 5 The drying apparatus 10 includes a plurality of first heating components 12a and a plurality of second heating components 12b. The first heating components 12a are disposed within a first inner cavity region 101, and the second heating components 12b are disposed within a second inner cavity region 102. The plurality of first heating components 12a are distributed along a first direction Y, and the plurality of second heating components 12b are also distributed along the first direction Y. The first heating components 12a are disposed between two adjacent first guide rollers 13, or between two adjacent second guide rollers 14. The second heating components 12b are disposed between two adjacent first guide rollers 13, or between two adjacent second guide rollers 14. The first heating components 12a include a plurality of heating structures 121, and the second heating components 12b include at least one heating structure 121. The number of heating structures 121 in the first heating components 12a is greater than the number of heating structures 121 in the second heating components 12b.

[0165] As an example, such as Figure 3 system Figure 5 As shown, the first heating component 12a has two heating structures 121, and the second heating component 12b has one heating structure 121.

[0166] It should be noted that the first inner cavity region 101 and the second inner cavity region 102 can be divided according to the difference in the number of heating structures 121 of the first heating component 12a and the second heating component 12b. That is, the dividing line between the first inner cavity region 101 and the second inner cavity region 102 can be located between the first heating component 12a and the second heating component 12b.

[0167] Among them, such as Figure 4 As shown, the first inner cavity region 101 and the second inner cavity region 102 can be separated by a dashed line.

[0168] The number of heating structures 121 of the first heating assembly 12a is greater than the number of heating structures 121 of the second heating assembly 12b, so that the distribution density of the heating structures 121 in the first inner cavity region 101 is greater than the distribution density of the heating structures 121 in the second inner cavity region 102, thereby helping to improve the baking and drying effect of the pole piece, so as to improve the quality of the pole piece.

[0169] In some embodiments, please refer to Figure 4 and Figure 5 In the first heating assembly 12a, a plurality of heating structures 121 are distributed along the second direction Z.

[0170] In this way, the first heating assembly 12a can be close to the material belt m, thereby being able to sufficiently heat the material belt m, so that the material belt m can be efficiently heated to a preset temperature, thereby helping to improve the drying efficiency of the material belt m.

[0171] In some embodiments, please refer to Figure 3 and Figure 4 The first box body 11 further comprises a third inner cavity region 103, the first inner cavity region 101, the second inner cavity region 102 and the third inner cavity region 103 are sequentially distributed along the first direction Y, the first inner cavity region 101, the second inner cavity region 102 and the third inner cavity region 103 are used to pass the material belt m in sequence, no heating structure 121 is arranged in the third inner cavity region 103, and a plurality of first guide rollers 13 and a plurality of second guide rollers 14 are arranged in the third inner cavity region 103.

[0172] It should be noted that the third inner cavity region 103 and the second inner cavity region 102 can be divided according to whether the heating structure 121 is arranged in the first box body 11. That is, in the first direction Y, the boundary line between the third inner cavity region 103 and the second inner cavity region 102 can be located at the rear end of all the heating structures 121 and close to the heating structure 121.

[0173] As shown in Figure 4 , the third inner cavity region 103 and the second inner cavity region 102 can be divided by a dashed line.

[0174] In this way, the material belt m can first pass through the first heating assembly 12a and be efficiently heated to a preset temperature under the heating action of the first heating assembly 12a; then pass through the second heating assembly 12b and maintain the temperature under the heating action of the second heating assembly 12b to achieve the drying effect; then pass through the third inner cavity region 103 and continue to achieve the drying effect without heating. In this way, the material belt m can be regularly baked and dried in the drying device 10, thereby improving the drying effect.

[0175] In some embodiments, please refer toFigure 4 and Figure 5 The first temperature sensor 15 is arranged in the first box body 11 and is used to detect the temperature of the material belt m.

[0176] The first temperature sensor 15 is a temperature sensor, which can be but is not limited to an infrared sensor.

[0177] The temperature of the material belt m is detected by the first temperature sensor 15, so that the heating temperature rise of the material belt m in the first box body 11 can be obtained. According to the temperature of the material belt m, the running speed of the material belt m can be controlled, so that the material belt m can be efficiently heated to a preset temperature and dried, thereby improving the drying effect and efficiency.

[0178] In some embodiments, referring to Figure 4 and Figure 5 The first temperature sensor 15 is arranged in the first box body 11 and is arranged between the first inner cavity region 101 and the second inner cavity region 102, and is used to detect the temperature of the material belt m.

[0179] The first temperature sensor 15 is a temperature sensor, which can be but is not limited to an infrared sensor.

[0180] By arranging the first temperature sensor 15 between the first inner cavity region 101 and the second inner cavity region 102, the temperature of the material belt m after passing through the first inner cavity region 101 can be obtained, and it can be determined whether the material belt m is heated to a preset temperature after passing through the heating of the first heating assembly 12a. Therefore, the running speed of the material belt m can be controlled so that the material belt m is heated to a preset temperature after passing through the first inner cavity region 101, so that the material belt m can be efficiently heated to a preset temperature and dried, thereby improving the drying effect and efficiency.

[0181] The first temperature sensor 15 can be arranged between two adjacent first guide rollers 13 or between two adjacent second guide rollers 14.

[0182] In some embodiments, referring to Figures 4 to 6 wherein, Figure 6 is Figure 2 a perspective view of a heating structure 121 of the drying device 100 provided by the present application. The heating structure 121 is provided with a second temperature sensor 16, which is used to detect the temperature of the heating structure 121, and the heating structure 121 is used to heat according to the detection result of the second temperature sensor 16.

[0183] The second temperature sensor 16 is a temperature sensor and is used to detect the temperature of the heating structure 121.

[0184] The heating structure 121 is heated according to the detection result of the second temperature sensor 16, that is, the temperature of the heating structure 121 detected by the second temperature sensor 16 is compared with a predetermined temperature, and the heating structure 121 is heated according to the comparison result, so that the heating structure 121 is heated to approach the predetermined temperature.

[0185] In this way, the temperature of the heating structure 121 can be controlled, and specifically, the heating structure 121 can be heated to the predetermined temperature based on the second temperature sensor 16, thereby improving the drying effect.

[0186] In some embodiments, referring to Figures 4 to 6 The third temperature sensor 17 is also provided on the heating structure 121, and the third temperature sensor 17 is arranged on the heating structure 121 in a spaced manner with the second temperature sensor 16. The third temperature sensor 17 is used to detect the temperature of the heating structure 121, and the third temperature sensor 17 is used to monitor the second temperature sensor 16.

[0187] The third temperature sensor 17 is a temperature sensor, which is used to detect the temperature of the heating structure 121. It can be understood that the second temperature sensor 16 and the third temperature sensor 17 are used to detect the temperature of the heating structure 121 at two positions.

[0188] The third temperature sensor 17 is used to monitor the second temperature sensor 16, that is, the temperature of the heating structure 121 detected by the third temperature sensor 17 is compared with the temperature detected by the second temperature sensor 16. When the difference between the two is less than a predetermined value, it indicates that the second temperature sensor 16 is in a good state; when the difference between the two is greater than the predetermined value, it indicates that the second temperature sensor 16 or the third temperature sensor 17 has a fault, at which time the heating work of the heating structure 121 can be stopped first for maintenance.

[0189] In this way, the second temperature sensor 16 can be monitored, thereby facilitating the maintenance of the drying device 10.

[0190] In some embodiments, referring to Figure 2 , Figure 3 and Figure 7 , wherein, Figure 7 is Figure 2 a schematic view of the opening of the winding device 40 of the drying equipment 100 provided by the present application. The drying equipment 100 further comprises a winding device 40, which comprises a second box body 41 and a winding mechanism 42 arranged in the second box body 41. The winding mechanism 42 is used to wind the material belt m output from the first box body 11.

[0191] The winding device 40 refers to a device for winding the material belt m.

[0192] The second box body 41 is a box structure of the winding device 40, and the second box body 41 has an inner cavity. The winding mechanism 42 is arranged in the inner cavity of the second box body 41.

[0193] It can be understood that the first box body 11 and the second box body 41 are communicated.

[0194] It can be understood that, along the running direction of the material belt m, the material belt m first passes through the first box body 11, then passes through the second box body 41, and is wound in the winding mechanism 42.

[0195] In this way, after the material belt m passes through the drying device 10 to achieve baking and drying, the material belt m can be wound by the winding device 40.

[0196] In some embodiments, referring to Figure 2 , Figure 3 and Figure 7 , the drying device 100 further comprises a second suction assembly 50 connected to the second box body 41, and the second suction assembly 50 is used for suction operation on the second box body 41.

[0197] The second suction assembly 50 refers to an assembly structure with suction performance.

[0198] The second suction assembly 50 is connected to the second box body 41, so that the second suction assembly 50 and the inner cavity of the second box body 41 are communicated. In this way, during the suction action of the second suction assembly 50, the second suction assembly 50 can realize suction on the inner cavity of the second box body 41.

[0199] Through the arrangement of the first suction assembly 20 and the second suction assembly 50, the first box body 11 and the second box body 41 which are communicated with each other can efficiently realize the suction effect. In this way, the moisture, sulfides and the like in the first box body 11 and the second box body 41 can be efficiently sucked away, so that the first box body 11 and the second box body 41 can efficiently approach a vacuum state, so that the material belt m can be baked and dried in an environment approaching a vacuum state. In this way, it helps to reduce the risk of oxidation and corrosion of the material belt m, so as to improve the quality of the pole piece, thereby improving the quality and reliability of the battery device.

[0200] In some embodiments, referring to Figure 2 , Figure 3 and Figure 7 , the second suction assembly 50 comprises a second suction fan 51, a second suction pipe 52 and a third switch structure. The second suction pipe 52 is connected between the second suction fan 51 and the second box body 41. The third switch structure is arranged on the second suction pipe 52, and the third switch structure is used for opening or closing the second suction pipe 52.

[0201] The second suction fan 51 refers to a device with suction performance.

[0202] The second air exhaust pipe 52 refers to a pipe connected between the second air exhaust fan 51 and the second box 41, so that the second air exhaust pipe 52 can be in communication with the second box 41 and the second air exhaust fan 51.

[0203] The third switch structure is a switch structure for opening or closing the second air exhaust pipe 52. The third switch structure can be a mechanical valve or an electric valve, for example, the third switch structure can be an electromagnetic valve. When the third switch structure opens the second air exhaust pipe 52, the second air exhaust pipe 52 is in communication with the second box 41 and the second air exhaust fan 51. When the third switch structure closes the second air exhaust pipe 52, the second box 41 and the second air exhaust fan 51 are not in communication.

[0204] It can be understood that during the operation of the drying device 100, the first switch structure and the third switch structure can be opened first, and then the first air exhaust fan 21 and the second air exhaust fan 51 are driven to work, so that the first air exhaust fan 21 and the second air exhaust fan 51 perform air exhaust operation through the first air exhaust pipe 22 and the second air exhaust pipe 52 respectively. In this way, the moisture, sulfides and the like in the first box 11 and the second box 41 can be efficiently exhausted. Then, the first switch structure and the third switch structure are closed, so that the air outside the first box 11 and the second box 41 as much as possible does not enter the first box 11 and the second box 41 through the first air exhaust pipe 22 and the second air exhaust pipe 52, so as to maintain the state of the first box 11 and the second box 41 approaching vacuum. Then, the material belt m starts to run, and the heating structure 121 performs baking and drying operation on the material belt m.

[0205] In this way, the first air suction assembly 20 and the second air suction assembly 50 can perform air suction operation on the first box 11 and the second box 41 before the material belt m is baked and dried, and can maintain the environmental state of the first box 11 and the second box 41 during the baking and drying heating process of the material belt m, so as to further reduce the risk of oxidation and corrosion of the material belt m.

[0206] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 7 The second box 41 comprises a second box body 411 and a second box door 412, the second box door 412 is sealed and covered on the second box body 411, the second box body 411 and the second box door 412 enclose to form an inner cavity of the second box 41, and the second box 41 can open or close the second box body 411.

[0207] Through the setting of the second box door 412, the maintenance of the winding device 40 is facilitated.

[0208] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 7The drying apparatus 100 further comprises a second communication pipe 60 connected to the second box 41, the second communication pipe 60 being configured to communicate with the external environment. The second communication pipe 60 is provided with a fourth switch structure configured to open or close the second communication pipe 60.

[0209] It can be understood that one end of the second communication pipe 60 is connected to the second box 41 and communicates with the inner cavity of the second box 41. The other end of the second communication pipe 60 is configured to communicate with the external environment.

[0210] The fourth switch structure can be a switch structure configured to open or close the second communication pipe 60. The fourth switch structure can be a mechanical valve or an electric valve. As an example, the fourth switch structure can be a solenoid valve. As an example, the fourth switch structure can be a rubber plug configured to block the end of the second communication pipe 60 away from the second box 41.

[0211] When the fourth switch structure opens the second communication pipe 60, the second communication pipe 60 communicates with the second box 41 and the external environment, and the air in the external environment can enter the second box 41 through the second communication pipe 60. When the fourth switch structure closes the second communication pipe 60, the second box 41 and the external environment are not communicated, so that the second box 41 can maintain the environmental state.

[0212] In this way, when baking and drying operations are required, the second switch structure and the fourth switch structure can be closed to maintain the environmental state of the first box 11 and the second box 41, for example, to maintain the state of the second box 41 approaching a vacuum, thereby reducing the risk of oxidation and corrosion of the pole pieces during baking and drying.

[0213] When baking and drying operations are not required, the fourth switch structure can be opened to allow air from the external environment to enter the second box 41 through the second communication pipe 60, so that the second box 41 can maintain atmospheric pressure balance between the inside and the outside, thereby allowing the second box door 412 of the second box 41 to open and close, and improving the problem that the second box door 412 of the second box 41 cannot be opened when the second box 41 is in a negative pressure state.

[0214] In some embodiments, referring to Figure 2 and Figure 3 , a first passage pipe 110 is arranged between the first box 11 and the second box 41, the first passage pipe 110 being configured to output the material belt m from the first box 11 to the second box 41.

[0215] The first passage pipe 110 is a pipe.

[0216] By setting the first channel pipe 110 between the first box body 11 and the second box body 41, the first box body 11 and the second box body 41 are communicated, so that the mutual influence between the environmental states of the first box body 11 and the second box body 41 can be reduced, thereby reducing the influence of the heating structure 121 on the winding device 40.

[0217] In some embodiments, referring to Figure 3 and Figure 7 , the second box body 41 further comprises a cooling mechanism 43, which is arranged between the first box body 11 and the winding mechanism 42 and used for cooling the material belt m.

[0218] The cooling mechanism 43 refers to a mechanism for cooling the material belt m.

[0219] In this way, after the material belt m is baked and dried in the drying device 10, it is cooled by the cooling mechanism 43 before being wound on the winding mechanism 42, which helps to improve the cooling effect of the dried material belt m and improve the quality of the pole piece.

[0220] In some embodiments, referring to Figure 3 and Figure 7 , the cooling mechanism 43 comprises cooling rollers 431 arranged in the second box body 41, and the cooling rollers 431 are used for sequentially passing through the material belt m, and the cooling rollers 431 are used for containing cooling liquid.

[0221] The material belt m passes through the cooling mechanism 43, specifically, the material belt m sequentially passes through the cooling rollers 431, so that the material belt m can exchange heat with the cooling liquid in the cooling rollers 431 to achieve the cooling effect of the material belt m.

[0222] In this way, the cooling mechanism 43 can efficiently achieve the cooling effect of the material belt m.

[0223] In some embodiments, the cooling liquid can flow between the cooling rollers 431 and an external system, thereby improving the cooling effect.

[0224] In some embodiments, at least part of the cooling rollers 431 can rotate relative to the second box body 41, so that the cooling rollers 431 are driven rollers. In this way, the pole piece can be protected, and the smoothness of the material belt is improved.

[0225] In some embodiments, referring to Figure 2 , Figure 3 and Figure 8 , wherein, Figure 8 is Figure 2The opening schematic view of the unwinding device 70 of the drying device 100 is provided. The drying device 100 further comprises the unwinding device 70, the unwinding device 70 comprises a third box body 71 and an unwinding mechanism 72 arranged in the third box body 71, the unwinding mechanism 72 is used for outputting the material belt m to the first box body 11.

[0226] The unwinding device 70 refers to a device used for outputting the material belt m to the drying device 10.

[0227] The third box body 71 is a box structure of the unwinding device 70, and the third box body 71 has an inner cavity, and the unwinding mechanism 72 is arranged in the inner cavity of the third box body 71.

[0228] It can be understood that the first box body 11 and the third box body 71 are communicated.

[0229] It can be understood that, along the running direction of the material belt m, the material belt m passes through the third box body 71, the first box body 11 and the second box body 41 in turn, and is wound in the winding mechanism 42.

[0230] In this way, the material belt m can be unwound through the unwinding device 70.

[0231] In some embodiments, referring to Figure 3 and Figure 8 , the drying device 100 further comprises a third suction assembly 80, the third suction assembly 80 is connected to the third box body 71, and the third suction assembly 80 is used for suction operation on the third box body 71.

[0232] The third suction assembly 80 refers to an assembly structure with suction performance.

[0233] The third suction assembly 80 is connected to the third box body 71, so that the third suction assembly 80 and the inner cavity of the third box body 71 are communicated. In this way, during the suction action of the third suction assembly 80, the third suction assembly 80 can realize suction on the inner cavity of the third box body 71.

[0234] Through the arrangement of the first suction assembly 20, the second suction assembly 50 and the third suction assembly 80, the first box body 11, the second box body 41 and the third box body 71 which are communicated with each other can efficiently realize the suction effect. In this way, the moisture, sulfide and the like in the first box body 11, the second box body 41 and the third box body 71 can be efficiently sucked away, so that the first box body 11, the second box body 41 and the third box body 71 can efficiently approach the vacuum state, so that the material belt m can be baked and dried in the environment approaching the vacuum state. In this way, it is helpful to reduce the risk of oxidation and corrosion of the material belt m, so as to improve the quality of the pole piece, thereby improving the quality and reliability of the battery device.

[0235] In some embodiments, referring to Figure 3 andFigure 8 The third suction assembly 80 comprises a third suction fan 81, a third suction pipe 82 and a fifth switch structure. The third suction pipe 82 is connected between the third suction fan 81 and the third box 71. The fifth switch structure is arranged on the third suction pipe 82, and is used to open or close the third suction pipe 82.

[0236] The third suction fan 81 refers to a device with suction performance.

[0237] The third suction pipe 82 refers to a pipeline connected between the third suction fan 81 and the third box 71, so that the third suction pipe 82 can be connected to the third box 71 and the third suction fan 81.

[0238] The fifth switch structure is a switch structure for opening or closing the third suction pipe 82. The fifth switch structure can be a mechanical valve or an electric valve, for example, the fifth switch structure can be a solenoid valve. When the fifth switch structure opens the third suction pipe 82, the third suction pipe 82 is connected to the third box 71 and the third suction fan 81. When the fifth switch structure closes the third suction pipe 82, the third box 71 and the third suction fan 81 are not connected.

[0239] It can be understood that during the operation of the drying device 100, the first switch structure, the third switch structure and the fifth switch structure can be opened first, and then the first suction fan 21, the second suction fan 51 and the third suction fan 81 are driven to work, so that the first suction fan 21, the second suction fan 51 and the third suction fan 81 perform suction operation through the first suction pipe 22, the second suction pipe 52 and the third suction pipe 82 respectively. In this way, the moisture, sulfides and the like in the first box 11, the second box 41 and the third box 71 can be efficiently sucked away. Then, the first switch structure, the third switch structure and the fifth switch structure are closed, so that the air outside the first box 11, the second box 41 and the third box 71 cannot enter the first box 11, the second box 41 and the third box 71 through the first suction pipe 22, the second suction pipe 52 and the third suction pipe 82 as much as possible, so as to maintain the state of the first box 11, the second box 41 and the third box 71 approaching vacuum. Then, the material belt m starts to run, and the heating structure 121 performs baking and drying operation on the material belt m.

[0240] In this way, the first suction assembly 20, the second suction assembly 50 and the third suction assembly can perform suction operation on the first box 11, the second box 41 and the third box 71 before the material belt m is baked and dried, and can maintain the environmental state of the first box 11, the second box 41 and the third box 71 during the baking and drying heating process of the material belt m, so as to further reduce the risk of oxidation and corrosion of the material belt m.

[0241] In some embodiments, please refer toFigure 2 、 Figure 3 and Figure 8 The third box body 71 comprises a third box main body 711 and a third box door 712, the third box door 712 is sealedly covered on the third box main body 711, the third box main body 711 and the third box door 712 enclose to form an inner cavity of the third box body 71, and the third box body 71 can open or close the third box main body 711.

[0242] By arranging the third box door 712, the maintenance of the unwinding device 70 is facilitated.

[0243] In some embodiments, referring to Figure 2 、 Figure 3 and Figure 8 The drying device 100 further comprises a third communication pipe 90, the third communication pipe 90 is connected to the third box body 71, and the third communication pipe 90 is used for communicating with the external environment. The sixth switch structure is arranged on the third communication pipe 90, and the sixth switch structure is used for opening or closing the third communication pipe 90.

[0244] It can be understood that one end of the third communication pipe 90 is connected to the third box body 71 and communicates with the inner cavity of the third box body 71. The other end of the third communication pipe 90 is used for communicating with the external environment.

[0245] The sixth switch structure can be a switch structure for opening or closing the third communication pipe 90. The sixth switch structure can be a mechanical valve or an electric valve. As an example, the sixth switch structure can be a solenoid valve. As an example, the sixth switch structure is a rubber plug used for plugging the end of the third communication pipe 90 away from the third box body 71.

[0246] When the sixth switch structure opens the third communication pipe 90, the third communication pipe 90 communicates between the third box body 71 and the external environment, and the air of the external environment can enter the third box body 71 through the third communication pipe 90. When the sixth switch structure closes the third communication pipe 90, the third box body 71 and the external environment are not communicated, so that the third box body 71 can maintain the environmental state thereof.

[0247] In this way, when baking and drying operations are needed, the second switch structure, the fourth switch structure and the sixth switch structure can be closed, so that the first box body 11, the second box body 41 and the third box body 71 maintain the environmental state thereof, for example, the state of the third box body 71 approaching a vacuum state, reducing the risk of oxidation and corrosion of the pole piece in the baking and drying process.

[0248] When the baking and drying operations are not required, the sixth switch structure can be opened to enable the air from the external environment to enter the third box body 71 through the third communication pipe 90, so that the third box body 71 can maintain the atmospheric pressure balance between the inside and outside, thereby enabling the third box door 712 of the third box body 71 to be opened and closed, improving the problem that the third box door 712 of the third box body 71 cannot be opened due to the negative pressure state of the third box body 71.

[0249] In some embodiments, referring to Figure 2 , Figure 3 and Figure 8 , the second channel pipe 120 is arranged between the first box body 11 and the third box body 71, and is used for outputting the material belt m from the unwinding mechanism 72 to the first box body 11.

[0250] The second channel pipe 120 is a pipe.

[0251] By arranging the second channel pipe 120 between the first box body 11 and the third box body 71, the first box body 11 and the third box body 71 are communicated, which can reduce the mutual influence between the environmental states of the first box body 11 and the third box body 71, thereby reducing the influence of the heating structure 121 on the unwinding device 70.

[0252] Referring to Figure 1 , the battery processing equipment 1000 provided by the embodiment includes a drying device 100, and the drying device 100 is used for drying the pole piece. In the embodiment, the drying device 100 is the same as the drying device 100 in the previous embodiment, and the related description of the drying device 100 in the previous embodiment is referred to.

[0253] The material belt m is a pole piece.

[0254] The battery processing equipment 1000 provided by the embodiment can improve the quality of the pole piece through the drying device 100 related by the above embodiments, so as to improve the quality of the battery monomer or the battery device.

[0255] In some embodiments, referring to Figure 1 , the battery processing equipment 1000 further includes a forming device 200 and an assembly device 300, the forming device 200 is used for processing the pole piece to form an electrode assembly, and the assembly device 300 is used for assembling the electrode assembly to obtain a battery monomer.

[0256] In this way, the battery monomer can be processed.

[0257] The battery production line provided by the embodiment of the application comprises a battery processing device 1000. In the embodiment, the battery processing device 1000 is the same as the battery processing device 1000 in the previous embodiment, and the related description of the battery processing device 1000 in the previous embodiment is referred to.

[0258] The battery production line is a production line for battery processing.

[0259] The battery production line provided by the embodiment of the application can improve the quality of the battery monomer or the battery device by using the battery processing device 1000 related to the above embodiments.

[0260] As one of the embodiments of the application, as shown in Figures 2 to 8 The drying device 100 comprises a drying device 10, a winding device 40, an unwinding device 70, a first suction assembly 20, a second suction assembly 50, a third suction assembly 80 and a third suction assembly 80. The drying device 10 comprises a first box body 11 and a heating structure 121 arranged in the first box body 11, and the first suction assembly 20 is connected to the first box body 11. The winding device 40 comprises a second box body 41 and a winding mechanism 42 arranged in the second box body 41, and the second suction assembly 50 is connected to the second box body 41. The unwinding device 70 comprises a third box body 71 and an unwinding mechanism 72 arranged in the third box body 71, and the third suction assembly 80 is connected to the third box body 71. In the running direction of the material belt m, the third box body 71, the first box body 11 and the second box body 41 are communicated in sequence. The unwinding mechanism 72 is used to unwind the material belt m to the first box body 11, and the winding mechanism 42 is used to wind the material belt m output from the first box body 11.

[0261] The above is only a preferred embodiment of the application, and is not used to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A drying apparatus, characterized by, The application relates to a drying device. The drying device comprises a first box body and a heating structure arranged in the first box body, the heating structure being used for drying a material belt passing through the first box body; the first box body comprises a first inner cavity region and a second inner cavity region arranged in sequence along a first direction and used for sequentially passing the material belt, the heating structure is arranged in the first inner cavity region and the second inner cavity region, and the distribution density of the heating structure in the first inner cavity region is greater than that in the second inner cavity region. A first suction assembly is connected to the first box body and used for performing suction operation on the first box body.

2. The drying apparatus according to claim 1, characterized by The first suction assembly comprises: a first suction fan; a first suction pipe connected between the first suction fan and the first box body; a first switch structure arranged on the first suction pipe and used for opening or closing the first suction pipe.

3. The drying apparatus according to claim 1, characterized by The number of the first suction assemblies is plural, and the plural first suction assemblies are all connected to the first box body.

4. The drying apparatus according to claim 1, characterized by The drying device further comprises a first communication pipe connected to the first box body and used for communicating with an external environment; the first communication pipe is provided with a second switch structure used for opening or closing the first communication pipe.

5. Drying apparatus according to any of claims 1-4, characterized in that The heating structure comprises an infrared heater.

6. Drying apparatus according to any of claims 1-4, characterized in that The number of the heating structures in the first inner cavity region is greater than that in the second inner cavity region.

7. Drying apparatus according to any of claims 1-4, characterized in that The first box body is provided with a plurality of first guide rollers arranged along the first direction and a plurality of second guide rollers arranged along the first direction, the first guide rollers and the second guide rollers are arranged along a second direction, the first direction and the second direction are perpendicular, the first guide rollers and the second guide rollers are alternately arranged along the first direction and used for sequentially guiding the material belt; the first inner cavity region and the second inner cavity region are both provided with the plural first guide rollers and the plural second guide rollers. At least one heating structure is arranged between two first guide rollers adjacent along the first direction, and / or at least one heating structure is arranged between two second guide rollers adjacent along the first direction.

8. The drying apparatus according to claim 7, characterized in that In the second direction, the heating structure is arranged between the first guide rollers and the second guide rollers.

9. The drying apparatus according to claim 7, characterized by The drying device comprises a plurality of first heating assemblies and a plurality of second heating assemblies, the first heating assemblies are arranged in the first inner cavity region, the second heating assemblies are arranged in the second inner cavity region, the plural first heating assemblies are arranged along the first direction, the plural second heating assemblies are arranged along the first direction, the first heating assemblies are arranged between two first guide rollers adjacent or two second guide rollers adjacent, the second heating assemblies are arranged between two first guide rollers adjacent or two second guide rollers adjacent; The first heating assembly comprises a plurality of heating structures, the second heating assembly comprises at least one heating structure, and the number of the heating structures of the first heating assembly is greater than that of the heating structures of the second heating assembly.

10. The drying apparatus of claim 9, wherein In the first heating assembly, a plurality of the heating structures are distributed along the second direction.

11. The drying apparatus of claim 7, wherein The first box further comprises a third inner cavity region, the first inner cavity region, the second inner cavity region and the third inner cavity region are distributed along the first direction in sequence and are used for sequentially passing the material belt, the third inner cavity region is not provided with the heating structure, and the third inner cavity region is provided with a plurality of the first guide rollers and a plurality of the second guide rollers.

12. Drying apparatus according to any of claims 1-4, characterized in that The first box is provided with a first temperature sensor, and the first temperature sensor is used for detecting the temperature of the material belt.

13. Drying apparatus according to any of claims 1-4, characterized in that The first box is provided with a first temperature sensor, and the first temperature sensor is arranged between the first inner cavity region and the second inner cavity region and is used for detecting the temperature of the material belt.

14. Drying apparatus according to any of claims 1-4, characterized in that The heating structure is provided with a second temperature sensor, the second temperature sensor is used for detecting the temperature of the heating structure, and the heating structure is used for heating according to the detection result of the second temperature sensor.

15. The drying apparatus of claim 14, wherein, The heating structure is further provided with a third temperature sensor which is arranged in a spaced manner with the second temperature sensor, the third temperature sensor is used for detecting the temperature of the heating structure and monitoring the second temperature sensor.

16. Drying apparatus according to any of claims 1-4, characterized in that The drying equipment further comprises a winding device, the winding device comprises a second box and a winding mechanism arranged in the second box, and the winding mechanism is used for winding the material belt output from the first box.

17. The drying apparatus of claim 16, wherein, The drying equipment further comprises a second suction assembly, the second suction assembly is connected to the second box and is used for performing suction operation on the second box.

18. The drying apparatus of claim 17, wherein, The second suction assembly comprises: a second suction fan; a second suction pipe connected between the second suction fan and the second box; a third switch structure arranged on the second suction pipe and used for opening or closing the second suction pipe.

19. The drying apparatus of claim 16, wherein, The drying equipment further comprises a second communication pipe, the second communication pipe is connected to the second box and is used for communicating with an external environment; and the second communication pipe is provided with a fourth switch structure used for opening or closing the second communication pipe.

20. The drying apparatus of claim 16, wherein, A first channel pipe is arranged between the first box and the second box, and the first channel pipe is used for outputting the material belt from the first box to the second box.

21. The drying apparatus of claim 16, wherein, The second box is further provided with a cooling mechanism, the cooling mechanism is arranged between the first box and the winding mechanism and is used for cooling the material belt.

22. The drying apparatus of claim 21, wherein, The cooling mechanism comprises cooling rollers arranged in the second box, a plurality of the cooling rollers are used for sequentially passing the material belt, and the cooling rollers are used for containing cooling liquid.

23. Drying apparatus according to any of claims 1-4, characterized in that The drying equipment further comprises an unwinding device, the unwinding device comprises a third box and an unwinding mechanism arranged in the third box, and the unwinding mechanism is used for outputting the material belt to the first box.

24. The drying apparatus of claim 23, wherein, The drying equipment further comprises a third suction assembly, the third suction assembly is connected to the third box and is used for performing suction operation on the third box.

25. The drying apparatus of claim 24, wherein, The third suction assembly comprises: a third suction fan; a third suction pipe connected between the third suction fan and the third box; a fifth switch structure arranged on the third suction pipe and used for opening or closing the third suction pipe.

26. The drying apparatus of claim 23, wherein, The drying device further comprises a third communicating pipe connected to the third box and used for communicating with the external environment; and a sixth switch structure is arranged on the third communicating pipe and used for opening or closing the third communicating pipe.

27. The drying apparatus of claim 23, wherein, A second communicating pipe is arranged between the first box and the third box, and is used for outputting the material belt from the unwinding mechanism to the first box.

28. A battery processing apparatus, characterized by, The drying device according to any one of claims 1-27 is used for drying the pole piece.

29. The battery processing apparatus of claim 28, wherein, The battery processing device further comprises: a forming device used for processing the pole piece into an electrode assembly; an assembling device used for assembling the electrode assembly into a battery cell.

30. A battery production line, characterized by The battery processing device according to claim 28 or 29.

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