A battery powder drying line

Abstract

The present invention discloses a battery powder drying line, comprising a feeding assembly, a first manipulator, a first transfer device, a drying chamber, a cooling chamber, a second transfer device, a second manipulator, a material collecting device, a pallet reflux transport line and a powder transport line, wherein the drying chamber, the pallet reflux transport line and the powder transport line are arranged in parallel, the pallet reflux transport line is arranged between the drying chamber and the powder transport line, the first manipulator and the first transfer device are arranged at one end of the pallet reflux transport line, the second manipulator and the second transfer device are arranged at the other end of the pallet reflux transport line, the first transfer device and the second transfer device are provided with a first air intake port on the top, the cooling chamber is connected to one end of the drying chamber, the outlet side of the cooling chamber is provided with a second air intake port, and the second air intake port is connected to a humidity sensor for humidity detection. Compared with the prior art, the present invention can effectively prevent foreign matter from invading the battery powder, and at the same time realize efficient monitoring of the moisture content of the battery powder material.

Description

Technical Field

[0001] The invention relates to the technical field of battery powder drying, and in particular to a battery powder drying line. Background Art

[0002] Lithium batteries are widely used in portable electronic devices, electric vehicles, energy storage systems and other fields due to their high energy density, long cycle life and no memory effect. With the growing market demand for lithium batteries, the production efficiency and quality control of lithium batteries have become particularly important. Among them, powder materials (such as lithium cobalt oxide, graphite, etc.) are key components of lithium batteries, and their water content directly affects the performance and safety of the battery. Therefore, in the lithium battery manufacturing process, ensuring that the powder materials have a suitable moisture content is a key technical challenge.

[0003] The production environment of lithium batteries usually needs to maintain a high cleanliness standard. The introduction of any external pollutants may have an adverse effect on battery performance. Therefore, how to ensure the cleanliness of the production environment while effectively controlling the moisture content of the powder material has become an urgent problem to be solved.

[0004] In addition, most lithium battery manufacturers use traditional manual sampling and laboratory testing methods to monitor the moisture content of materials during the drying process of powder materials. This method is not only time-consuming and costly, but more importantly, it cannot provide continuous real-time data and cannot detect abnormal conditions in the drying process in time, resulting in low production efficiency and unstable quality control.

[0005] In view of this, a battery powder drying line is proposed. Summary of the invention

[0006] The object of the present invention is to provide a battery powder drying line, which can effectively prevent foreign matter from invading the battery powder and realize efficient monitoring of the moisture content of the battery powder material.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A battery powder drying line comprises a feeding assembly, a first manipulator, a first transfer device, a drying chamber, a cooling chamber, a second transfer device, a second manipulator, a collecting device, a pallet reflux transport line and a powder transport line, wherein the drying chamber, the pallet reflux transport line and the powder transport line are arranged in parallel, the pallet reflux transport line is arranged between the drying chamber and the powder transport line, the first manipulator and the first transfer device are arranged at one end of the pallet reflux transport line, the second manipulator and the second transfer device are arranged at the other end of the pallet reflux transport line, a first air intake port is arranged on the top of the first transfer device and the second transfer device, the cooling chamber is connected to one end of the drying chamber, a second air intake port is arranged on the outlet side of the cooling chamber, and the second air intake port is connected to a humidity sensor for humidity detection.

[0009] In a preferred embodiment, the first transfer device and the second transfer device include a gantry, a motion drive mechanism and a transfer frame, the gantry includes a first column, a crossbeam and a second column, the first column and the second column are vertically arranged, the crossbeam is provided with a slide rail, the two ends of the crossbeam are respectively connected to the top of the first column and the second column, the motion drive mechanism includes a drive motor, a gear, a rack and a hanger, the hanger is provided with a slider, the slider and the slide rail are matched, the rack is arranged on the crossbeam, the gear is matched with the rack, the drive motor is connected to the gear to drive the gear to rotate, and the transfer frame is connected to the bottom of the hanger.

[0010] In a preferred embodiment, the transfer rack includes a top platform, a dual-axis motor, a first transmission box, a second transmission box, a first adjusting screw, a second adjusting screw and a transfer platform, the bracket is connected to the top platform, the dual-axis motor is installed on the top platform, and has a first axis and a second axis, the first axis is connected to the first transmission box, the second axis is connected to the second transmission box, the top of the first adjusting screw is connected to the first transmission box, the top of the second adjusting screw is connected to the second transmission box, the left and right sides of the transfer platform are respectively provided with a first sleeve and a second sleeve, the inner wall of the first sleeve is provided with a first thread matching the first adjusting screw, and the inner wall of the second sleeve is provided with a second thread matching the second adjusting screw.

[0011] In a preferred embodiment, the first air inlets are respectively provided on both sides of the bottom of the top platform, and the first air inlets are arranged along the edges of both sides of the bottom of the top platform.

[0012] In a preferred embodiment, the cooling chamber comprises a cooling chamber body and an opening and closing door, the cooling chamber body is provided with an outlet, the opening and closing door is provided on the outlet, and the second air intake port is provided on both sides of the outlet.

[0013] In a preferred embodiment, the second air inlet is connected to an air inlet detection pipe, and the humidity sensor is arranged in the air inlet detection pipe to realize real-time detection of humidity and send the detection result to the controller. After receiving the detection data, the controller forms a humidity change curve according to time according to the humidity change data, and compares the humidity change curve with the model curve. If the comparison result is consistent, it means that the humidity is qualified. If the comparison result is not consistent, it means that the humidity is unqualified.

[0014] In a preferred embodiment, the second air intake port is arranged to be inclined toward the cooling chamber.

[0015] In a preferred embodiment, the first manipulator and the second manipulator are provided with a third air suction port and a fourth air suction port respectively.

[0016] In a preferred embodiment, the feed assembly includes a feed rack, a feed conveying mechanism, a receiving hopper and a carrying trolley. The feed conveying mechanism is arranged on the feed rack, and the receiving hopper includes a hopper body and a bottom enclosure mechanism. The hopper body is supported under the feed conveying mechanism. The bottom enclosure mechanism includes a bottom plate, a hard enclosure, a flexible enclosure, a first guide plate and a second guide plate. The bottom plate is connected to the bottom of the hopper body, the hard enclosure is arranged around the edge of the bottom plate, the hard enclosure is provided with an opening, and the flexible enclosure is arranged at the opening. The first guide plate and the second guide plate are respectively arranged on both sides of the opening, and are arranged in an "eight" shape.

[0017] In a preferred embodiment, a pallet cleaning device is provided at one end of the pallet return transport line, and the pallet cleaning device includes a cleaning frame, a first door body, a second door body, a conveying channel, a top dust chamber, a cleaning brush and a bottom dust chamber. The conveying channel is arranged on the cleaning frame, and the conveying channel is arranged in the cleaning frame. The first door body and the second door body are respectively arranged at both ends of the conveying channel, the top dust chamber and the bottom dust chamber are respectively arranged above and below the conveying channel, and the cleaning brush is arranged below the conveying channel.

[0018] Compared with the prior art, the present invention provides a battery split drying line, which can realize an efficient drying process for battery powder. During the working process, the battery powder material is first input by the feeding component, and the first manipulator grabs the tray from the tray reflux conveyor line. The tray receives the battery powder material at the feeding component and weighs it. After receiving, the first manipulator sends the tray containing the battery powder material to the first transfer device, and the first transfer device sends the tray containing the battery powder material to the entrance of the drying room, and is transported by the conveyor line in the drying room. During the transportation process In the process, the battery powder material is dried in the drying room, and then sent to the cooling room for cooling in the cooling room. Then, the cooled tray with the dried battery powder material is grabbed by the second manipulator to the collecting device, and the battery powder material is placed in the collecting device. The empty tray is placed on the tray return transport line, and the tray is returned for transport in preparation for the next drying work. The powder transport line is used to transport the dried battery powder material collected in the collecting device to the starting position for processing in subsequent work processes.

[0019] In the above process, the first air inlet and the second air inlet perform air suction work to form an air flow layer at a certain height, so that foreign objects in the air are difficult to fall onto the exposed battery powder material, thereby protecting the battery powder material. At the same time, after the gas is inhaled by the second air inlet, the humidity of the inhaled gas is detected. Through such a humidity detection process, the humidity condition of the battery powder material after the drying process can be judged. Specifically, the drying condition is judged by the characteristics of the moisture emitted after drying, thereby realizing a quick judgment of the drying degree. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a battery powder drying line related to the present invention (first viewing angle).

[0021] Figure 2 It is a structural schematic diagram of a battery powder drying line related to the present invention (second viewing angle).

[0022] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0023] Figure 4 is a schematic diagram for comparing humidity models.

[0024] Figure 5 The present invention relates to a battery powder drying line, a second air inlet, a humidity sensor, a controller and an air inlet detection pipeline.

[0025] Figure 6The present invention relates to a structural schematic diagram of a first transplanting mechanism of a battery powder drying line.

[0026] Figure 7 The present invention relates to a structural schematic diagram of a feed assembly of a battery powder drying line.

[0027] Figure 8 The invention relates to a structural schematic diagram of a tray cleaning device for a battery powder drying line.

[0028] Feeding assembly 1; first manipulator 2; first transfer device 3; first air inlet 4; drying chamber 5; cooling chamber body 6; outlet 7; opening and closing door 8; second air inlet 9; second transfer device 10; second manipulator 11; collecting device 12; tray return transport line 13; powder transport line 14; first column 15; crossbeam 16; second column 17; slide rail 18; drive motor 19; hanger 20; slide block 21; top platform 22; double-axis motor 23; first axis 24; second axis 25; first transmission box 26; second transmission box 27; first An adjusting screw 28; a second adjusting screw 29; a transfer platform 30; a first sleeve 31; a second sleeve 32; a feed rack 33; a feed conveying mechanism 34; a transport trolley 35; a bucket body 36; a bottom plate 37; a hard enclosure 38; a flexible enclosure 39; a first guide plate 40; a second guide plate 41; a tray cleaning device 42; a cleaning rack 43; a first door body 44; a second door body 45; a conveying channel 46; a top dust chamber 47; a bottom dust chamber 48; an isolation chamber 49; a humidity sensor 50; a controller 51; and an air suction detection duct 52. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0031] like Figures 1 to 7As shown, a battery powder drying line includes a feeding assembly 1, a first manipulator 2, a first transfer device 3, a drying chamber 5, a cooling chamber, a second transfer device 10, a second manipulator 11, a collecting device 12, a tray return transport line 13 and a powder transport line 14, wherein the drying chamber 5, the tray return transport line 13 and the powder transport line 14 are arranged in parallel, the tray return transport line 13 is arranged between the drying chamber 5 and the powder transport line 14, the first manipulator 2 and the first transfer device 3 are arranged at one end of the tray return transport line 13, the second manipulator 11 and the second transfer device 10 are arranged at the other end of the tray return transport line 13, the first transfer device 3 and the second transfer device 10 are provided with a first air intake 4 at the top, the cooling chamber is connected to one end of the drying chamber 5, the outlet 7 of the cooling chamber is provided with a second air intake 9, and the second air intake 9 is connected to a humidity sensor 50 for humidity detection.

[0032] A battery split drying line of the present embodiment can realize an efficient drying process for battery powder. During the working process, the battery powder material is first input by the feeding component 1, and the first manipulator 2 grabs the tray from the tray reflux conveyor line. The tray receives the battery powder material at the feeding component 1 and weighs it. After receiving, the first manipulator 2 sends the tray containing the battery powder material to the first transfer device 3. The first transfer device 3 sends the tray containing the battery powder material to the entrance of the drying chamber 5, and is transported by the conveyor line in the drying chamber 5. During the transportation process, the drying chamber 5 The battery powder material is dried and then sent to a cooling room for cooling. The cooled tray with the dried battery powder material is then grabbed by the second manipulator 11 to the collecting device 12. The battery powder material is placed in the collecting device 12, and the empty tray is placed on the tray return transport line 13. The tray is returned for transport in preparation for the next drying operation. The powder transport line 14 is used to transport the dried battery powder material collected in the collecting device 12 to the starting position for subsequent processing steps.

[0033] In the above process, the first air inlet 4 and the second air inlet 9 perform air inhalation to form an air flow layer at a certain height, so that foreign matter in the air is difficult to fall onto the exposed battery powder material, thereby protecting the battery powder material. At the same time, after the second air inlet 9 inhales the gas, the humidity of the inhaled gas is detected. Through such a humidity detection process, the humidity condition of the battery powder material after the drying process can be judged. Specifically, the drying condition is judged by the moisture characteristics emitted after drying, thereby realizing a quick judgment of the drying degree, thereby realizing the removal of foreign matter on the one hand, and realizing a quick judgment of the drying degree on the other hand.

[0034] This humidity monitoring method, which connects the inhalation detection pipeline, sets a humidity sensor 50 therein to detect the humidity of the inhaled gas, and sends the detection result to the controller 51 to form a humidity change curve for comparison with the model curve, has many advantages.

[0035] First, the real-time detection of the humidity of the battery powder material after drying is realized. The humidity of the material can be grasped in time after the drying process is completed, so as to quickly judge its drying degree. This is crucial to ensure product quality and avoid the performance of the battery powder being affected by insufficient or excessive drying.

[0036] Secondly, the humidity data is used to form a humidity change curve and compare it with the model curve to quickly and accurately determine whether the humidity is qualified. The comparison process is based on big data model training. With long-term work, the detection efficiency and accuracy will continue to improve. This method not only improves production efficiency, but also reduces errors in human judgment and ensures the stability of product quality.

[0037] Furthermore, by inhaling gas through the air inlet for humidity detection, humidity information can be obtained without direct contact with the battery powder material. This will not cause pollution or damage to the material, and can achieve accurate humidity monitoring. At the same time, an air flow layer is formed at a certain height, making it difficult for foreign objects in the air to fall on the exposed battery powder material, achieving double protection for the battery powder material.

[0038] In addition, this humidity monitoring method has high flexibility and adaptability. The model curve can be adjusted according to different production needs and material characteristics to meet different drying requirements. At the same time, the controller can store and analyze the detection data to provide data support for the optimization of the production process.

[0039] In short, this humidity monitoring method plays an important role in the battery powder drying line, improves production efficiency and product quality, and provides reliable guarantee for the drying process of battery powder.

[0040] Further, the first transfer device and the second transfer device 10 include a gantry, a motion drive mechanism and a transfer frame, the gantry includes a first column 15, a cross beam 16 and a second column 17, the first column 15 and the second column 17 are vertically arranged, the cross beam 16 is provided with a slide rail 18, the two ends of the cross beam 16 are respectively connected to the top of the first column 15 and the second column 17, the motion drive mechanism includes a drive motor 19, a gear, a rack and a bracket 20, the bracket 20 is provided with a slider 21, the slider 21 and the slide rail 18 are matched, the rack is arranged on the cross beam 16, the gear is matched with the rack, the drive motor 19 is connected to the gear, used to drive the gear to rotate, and the transfer frame is connected to the bottom of the bracket 20.

[0041] The transfer rack includes a top platform 22, a dual-axis motor 23, a first transmission box 26, a second transmission box 27, a first adjusting screw 28, a second adjusting screw 29 and a transfer platform 30. The bracket 20 is connected to the top platform 22. The dual-axis motor 23 is installed on the top platform 22. It has a first shaft 24 and a second shaft 25. The first shaft 24 is connected to the first transmission box 26, and the second shaft 25 is connected to the second transmission box 27. The top of the first adjusting screw 28 is connected to the first transmission box 26, and the top of the second adjusting screw 29 is connected to the second transmission box 27. The left and right sides of the transfer platform 30 are respectively provided with a first sleeve 31 and a second sleeve 32. The inner wall of the first sleeve 31 is provided with a first thread matching the first adjusting screw 28, and the inner wall of the second sleeve 32 is provided with a second thread matching the second adjusting screw 29. Under the above structural design, the gantry is used to achieve the supporting function. When the drive motor 19 is started, the gear rotates. Due to the matching relationship with the gear, the hanger 20 will move on the beam 16, thereby realizing the position adjustment of the transfer rack and completing the transfer process.

[0042] Furthermore, the first air inlet 4 is respectively provided on both sides of the bottom of the top platform 22, and the first air inlet 4 is arranged along the edges of both sides of the bottom of the top platform 22. The first air inlet 4 is arranged at the bottom of the top platform 22, so that the first air inlet 4 is located at a higher position, so as to cover all powder materials, so that foreign matter above the position of the first air inlet 4 can be absorbed by the first air inlet 4.

[0043] Furthermore, the cooling chamber includes a cooling chamber body 6 and an opening and closing door 8, an outlet 7 is provided on the cooling chamber body 6, the opening and closing door 8 is provided on the outlet 7, and the second air inlet 9 is provided on both sides of the outlet 7. The second air inlet 9 is provided to protect the battery body material on the one hand and prevent foreign matter from falling on the battery powder material, and on the other hand to detect the humidity of the dried powder material, and because it is provided at the outlet 7 of the cooling chamber, the gas in the cooling chamber can be extracted during the cooling process, so that the airflow in the cooling chamber flows rapidly, thereby accelerating the cooling process and improving work efficiency.

[0044] Furthermore, the second air inlet 9 is connected to an air inlet detection pipe 52, and the humidity sensor 50 is arranged in the air inlet detection pipe 52 to realize real-time detection of humidity, and send the detection result to the controller 51. After receiving the detection data, the controller 51 forms a humidity change curve according to the humidity change data over time, and compares the humidity change curve with the model curve. If the comparison result is consistent, it means that the humidity is qualified. If the comparison result is not consistent, it means that the humidity is unqualified. By forming a speed change curve from the humidity data and comparing the speed change curve with the model curve to obtain a comparison result, the humidity can be quickly judged with a high accuracy. Through big data model training, the model curve of the model can be accurately set. In the long-term working process, its detection efficiency and accuracy will be continuously improved. Figure 4 In the figure, the dotted line is the model curve and the solid line is the humidity change curve.

[0045] In order to enable the second air intake port 9 to accurately absorb the gas in the cooling chamber, the second air intake port 9 is arranged to be inclined toward the cooling chamber, specifically, the second air intake port 9 points to the inside of the cooling chamber.

[0046] In order to further protect the battery powder material and improve the coverage of the space, the first manipulator 2 and the second manipulator 11 are respectively provided with a third air intake port and a fourth air intake port.

[0047] Furthermore, the feed assembly 1 includes a feed rack 33, a feed conveying mechanism 34, a receiving hopper and a carrying trolley 35. The feed conveying mechanism 34 is arranged on the feed rack 33. The receiving hopper includes a hopper body 36 and a bottom enclosure mechanism. The hopper body 36 is supported under the feed conveying mechanism 34. The bottom enclosure mechanism includes a bottom plate, a hard enclosure 38, a flexible enclosure 39, a first guide plate 40 and a second guide plate 41. The bottom plate is connected to the bottom of the hopper body 36. The hard enclosure 38 is arranged around the edge of the bottom plate. An opening is provided on the hard enclosure 38. The flexible enclosure 39 is arranged at the opening. The first guide plate 40 and the second guide plate 41 are respectively arranged on both sides of the opening, and are arranged in an "eight" shape. When feeding, the feeding conveying mechanism 34 conveys the battery powder material, and the first manipulator 2 is received under the feeding conveying mechanism 34 to receive the material. During the receiving process, the scattered battery powder material is collected by the receiving hopper and falls into the transport cart 35. In the structural design of the receiving hopper, the top opening of the transport cart 35 is fully covered by the setting of hard enclosures 38 and flexible enclosures 39, thereby preventing the battery powder material from scattering when falling. At the same time, the setting of the flexible enclosure 39 facilitates the entry and exit of the transport cart 35. The setting of the first guide plate 40 and the second guide plate 41 facilitates the transport cart 35 to accurately enter the opening position.

[0048] Furthermore, a pallet cleaning device 42 is provided at one end of the pallet return transport line 13, and the pallet cleaning device 42 includes a cleaning frame 43, a first door body 44, a second door body 45, a conveying channel 46, a top dust chamber 47, a cleaning brush and a bottom dust chamber 48. The conveying channel 46 is arranged on the cleaning frame 43, and the conveying channel 46 is arranged in the cleaning frame 43. The first door body 44 and the second door body 45 are respectively arranged at both ends of the conveying channel 46, the top dust chamber 47 and the bottom dust chamber 48 are respectively arranged above and below the conveying channel 46, and the cleaning brush is arranged below the conveying channel 46. After the second manipulator 11 places the battery powder material in the tray in the collecting device 12, the tray is placed in the conveying channel 46 of the tray cleaning device 42. The conveying channel 46 conveys the tray. During the conveying process, the cleaning brush cleans the bottom of the tray, and the top dust suction chamber 47 and the bottom dust suction chamber 48 absorb the battery powder material on the tray, thereby achieving efficient cleaning of the tray.

[0049] In order to further protect the battery body material and prevent foreign matter from invading the battery powder material during transportation, an isolation chamber 49 is provided on the powder transport line 14 to isolate foreign matter.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0051] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A battery powder drying line, characterized in that: It includes a feeding component, a first manipulator, a first transfer device, a drying chamber, a cooling chamber, a second transfer device, a second manipulator, a collecting device, a pallet reflux transport line and a powder transport line, wherein the drying chamber, the pallet reflux transport line and the powder transport line are arranged in parallel, the pallet reflux transport line is arranged between the drying chamber and the powder transport line, the first manipulator and the first transfer device are arranged at one end of the pallet reflux transport line, the second manipulator and the second transfer device are arranged at the other end of the pallet reflux transport line, the first transfer device and the second transfer device are provided with a first air intake on the top, the cooling chamber is connected to one end of the drying chamber, the outlet side of the cooling chamber is provided with a second air intake, and the second air intake is connected to a humidity sensor for humidity detection.

2. A battery powder drying line according to claim 1, characterized in that: The first transfer device and the second transfer device include a gantry, a motion drive mechanism and a transfer frame. The gantry includes a first column, a crossbeam and a second column. The first column and the second column are vertically arranged. The crossbeam is provided with a slide rail. The two ends of the crossbeam are respectively connected to the top of the first column and the top of the second column. The motion drive mechanism includes a drive motor, a gear, a rack and a bracket. The bracket is provided with a slider. The slider cooperates with the slide rail. The rack is arranged on the crossbeam. The gear cooperates with the rack. The drive motor is connected to the gear to drive the gear to rotate. The transfer frame is connected to the bottom of the bracket.

3. A battery powder drying line according to claim 2, characterized in that: The transfer rack includes a top platform, a dual-axis motor, a first transmission box, a second transmission box, a first adjusting screw, a second adjusting screw and a transfer platform. The bracket is connected to the top platform. The dual-axis motor is installed on the top platform. It has a first axis and a second axis. The first axis is connected to the first transmission box, and the second axis is connected to the second transmission box. The top of the first adjusting screw is connected to the first transmission box, and the top of the second adjusting screw is connected to the second transmission box. The left and right sides of the transfer platform are respectively provided with a first sleeve and a second sleeve. The inner wall of the first sleeve is provided with a first thread matching the first adjusting screw, and the inner wall of the second sleeve is provided with a second thread matching the second adjusting screw.

4. A battery powder drying line according to claim 3, characterized in that: The first air inlet is respectively arranged on both sides of the bottom of the top platform, and the first air inlet is arranged along the edges of both sides of the bottom of the top platform.

5. A battery powder drying line according to claim 1, characterized in that: The cooling chamber comprises a cooling chamber body and an opening and closing door. The cooling chamber body is provided with an outlet. The opening and closing door is arranged on the outlet. The second air intake port is arranged on both sides of the outlet.

6. A battery powder drying line according to claim 5, characterized in that: The second air inlet is connected to an air inlet detection pipe, and the humidity sensor is arranged in the air inlet detection pipe to realize real-time detection of humidity and send the detection result to the controller. After receiving the detection data, the controller forms a humidity change curve according to time for the humidity change data, and compares the humidity change curve with the model curve. If the comparison result is consistent, it means that the humidity is qualified. If the comparison result is not consistent, it means that the humidity is unqualified.

7. A battery powder drying line according to claim 6, characterized in that: The second air intake port is arranged to be inclined toward the cooling chamber.

8. A battery powder drying line according to claim 1, characterized in that: The first manipulator and the second manipulator are respectively provided with a third air suction port and a fourth air suction port.

9. A battery powder drying line according to claim 1, characterized in that: The feeding assembly includes a feeding rack, a feeding conveying mechanism, a receiving hopper and a carrying trolley. The feeding conveying mechanism is arranged on the feeding rack. The receiving hopper includes a hopper body and a bottom enclosure mechanism. The hopper body is supported under the feeding conveying mechanism. The bottom enclosure mechanism includes a bottom plate, a hard enclosure, a flexible enclosure, a first guide plate and a second guide plate. The bottom plate is connected to the bottom of the hopper body. The hard enclosure is arranged around the edge of the bottom plate. An opening is provided on the hard enclosure. The flexible enclosure is arranged at the opening. The first guide plate and the second guide plate are respectively arranged on both sides of the opening and are arranged in an "eight" shape.

10. A battery powder drying line according to claim 1, characterized in that: A pallet cleaning device is provided at one end of the pallet return transport line, and the pallet cleaning device includes a cleaning frame, a first door body, a second door body, a conveying channel, a top dust chamber, a cleaning brush and a bottom dust chamber. The conveying channel is arranged on the cleaning frame, and the conveying channel is arranged in the cleaning frame. The first door body and the second door body are respectively arranged at two ends of the conveying channel, the top dust chamber and the bottom dust chamber are respectively arranged above and below the conveying channel, and the cleaning brush is arranged below the conveying channel.

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