Powder processing device and lithium ion solid electrolyte preparation apparatus

Abstract

The application relates to the technical field of lithium ion batteries, and discloses a powder treatment device and a lithium ion solid electrolyte preparation equipment. The material channel is divided into at least two material treatment cavities, and the opening and closing of a discharging valve is controlled, so that the continuous treatment of powder material is realized, the treatment efficiency of the powder material is greatly improved, and the production cost is reduced. Compared with the whole material channel, the volume of a single material treatment cavity is small, the powder material can fill the material treatment cavity, and the powder material is heated and sintered or cooled in turn through the at least two material treatment cavities, so that the powder material is gradually heated or cooled, the heat transfer uniformity when the powder material is heated and sintered or cooled by the treatment assembly is improved, the consistency of the treated powder material is improved, and the quality is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium-ion battery technology, and in particular to a powder processing device and a lithium-ion solid electrolyte preparation equipment. Background Technology

[0002] Electrolyte powder is one of the essential materials for the preparation of solid-state lithium batteries. Solid electrolyte powder needs to undergo multiple processing steps, among which the most critical are the powder heating and cooling processes.

[0003] Current equipment for heating powdered solid electrolyte materials often only allows for one-time processing, which is cumbersome, results in low efficiency in solid electrolyte material preparation, and high production costs. Furthermore, the sintering chambers in current fixed electrolyte material preparation equipment have large internal spaces, leading to low heating efficiency, uneven heating of the solid electrolyte material, and poor performance consistency in the processed solid electrolyte material. Summary of the Invention

[0004] The purpose of this invention is to provide a powder processing device and a lithium-ion solid electrolyte preparation equipment, which can improve the uniformity of lithium-ion powder heating and improve the consistency of the properties of the prepared powder.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Powder processing device, including:

[0007] A material channel, the material channel comprising at least two material handling chambers arranged sequentially;

[0008] The discharge valve connects the outlet of the upstream material processing chamber to the inlet of the downstream material processing chamber in two adjacent material processing chambers.

[0009] A processing component for heating or cooling the powder material within the material processing chamber.

[0010] As a preferred technical solution of the above-mentioned powder processing device, at least two of the material channels (2) are arranged sequentially in the vertical direction; the inlet of the material processing chamber is located at its top, and the outlet of the material processing chamber is located at its bottom;

[0011] The discharge port of the downstream material processing chamber is connected to a discharge valve.

[0012] As a preferred technical solution of the above-mentioned powder processing device, a feed valve is provided at the feed inlet at the top of the upstream material processing chamber; each material processing chamber is provided with a gas inlet and a gas outlet located below the gas inlet;

[0013] The gas inlet is equipped with an inlet valve, and the inlet of the inlet valve is connected to a gas supply unit for providing protective gas; the gas outlet is equipped with an exhaust valve.

[0014] As a preferred embodiment of the above-mentioned powder processing device, the opening degree of the air inlet valve is adjustable; and / or, the opening degree of the exhaust valve is adjustable.

[0015] As a preferred embodiment of the above-mentioned powder processing device, the air supply unit includes:

[0016] Gas storage tanks, wherein multiple gas storage tanks are provided;

[0017] Gas supply control valve, each corresponding to a gas storage tank;

[0018] An air pump is provided, wherein the air storage tank is connected to the inlet of the air pump via a corresponding air supply control valve, and the outlet of the air pump is connected to the inlet of the air inlet valve.

[0019] As a preferred technical solution of the above-mentioned powder processing device, it also includes a feeding hopper located above the material channel, wherein the discharge port at the bottom of the feeding hopper and the inlet at the top of the material processing chamber are connected by a feeding valve.

[0020] As a preferred technical solution of the above-mentioned powder processing device, the top of the feeding hopper is provided with a pressing gas port, the pressing gas port is connected to a pressing valve, and the inlet of the pressing valve is connected to a gas supply unit for providing protective gas.

[0021] As a preferred technical solution of the above-mentioned powder processing device, the material channel is an S-shaped channel.

[0022] As a preferred technical solution of the above-mentioned powder processing device, it also includes:

[0023] An angle adjustment component is used to adjust the tilt angle of the material channel's extension direction relative to the vertical direction.

[0024] As a preferred embodiment of the above-mentioned powder processing device, the angle adjustment component includes:

[0025] A chain drive unit, wherein the driven sprocket of the chain drive unit is fixedly connected to the material channel;

[0026] A drive unit is connected to the drive sprocket of the chain drive unit and is used to drive the drive sprocket to rotate.

[0027] As a preferred technical solution of the above-mentioned powder processing device, it also includes:

[0028] A vibration assembly, wherein the vibration excitation end of the vibration assembly is connected to the material channel, and the vibration assembly is configured to cause the material channel to reciprocate along a vertical direction, a horizontal direction, and a specified inclined direction that forms an angle with both the vertical and horizontal directions.

[0029] To achieve the above objectives, the present invention also provides a lithium-ion solid electrolyte preparation apparatus, including a powder heat treatment device and a powder cooling device, wherein the powder cooling device is disposed downstream of the powder heat treatment device;

[0030] At least one of the powder heat treatment device and the powder cooling device is a powder processing device as described in any of the above embodiments.

[0031] As a preferred technical solution of the above-mentioned lithium-ion solid electrolyte preparation equipment, the material channel of the powder heat treatment device is a material heating treatment channel, and the material channel of the powder cooling device is a material cooling treatment channel; the lowest end of the material heating treatment channel can be connected to the highest end of the material cooling treatment channel;

[0032] The lowermost end of the material heating treatment channel and the uppermost end of the material cooling treatment channel are fixedly or rotatably connected.

[0033] The beneficial effects of this invention are as follows: The powder processing device and lithium-ion solid electrolyte preparation equipment provided by this invention, by dividing the material channel into at least two material processing chambers and controlling the opening and closing of the feeding valve, can achieve continuous powder material processing, thereby greatly improving the powder material processing efficiency and reducing production costs. Moreover, compared to the entire material channel, the volume of a single material processing chamber is smaller, making it easier for the powder material to fill the chamber. Furthermore, by sequentially heating and sintering or cooling the powder material through at least two material processing chambers, the powder material can be gradually heated or cooled, improving the uniformity of heat transfer during heating, sintering, or cooling using the processing components. This improves the consistency of the processed powder material and enhances the overall quality. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the material channel structure provided in an embodiment of the present invention;

[0036] Figure 2 This is a simplified structural diagram of the powder processing device provided in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the lithium-ion solid electrolyte preparation equipment provided in an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Feeding hopper; 2. Material channel; 21. Material handling chamber; 3. Discharge valve; 4. Outlet valve; 5. Feed valve; 6. Processing assembly; 7. Air inlet valve; 8. Exhaust valve; 9. Insulation layer; 10. Pressure valve; 11. Feeding valve;

[0040] 20. Angle adjustment assembly; 201. Drive sprocket; 202. Driven sprocket; 203. Chain;

[0041] 30. Frame; 40. Mounting lugs; 50. Vibration assembly; 501. Vibration platform;

[0042] 60. Gas supply unit; 601. Gas storage tank; 602. Gas supply control valve; 603. Air pump;

[0043] 100. Powder heat treatment device; 200. Powder cooling device. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] like Figures 1 to 3 As shown, this embodiment provides a powder processing device, including a material channel 2, a discharge valve 3, and a processing component 6. The material channel 2 includes at least two material processing chambers 21 arranged sequentially from top to bottom. In two adjacent material processing chambers 21, the outlet of the upstream material processing chamber 21 is connected to the inlet of the downstream material processing chamber 21 through the discharge valve 3. The processing component 6 is used to heat or cool the powder material in the material processing chamber 21.

[0049] By controlling the opening and closing states of each feeding valve 3, adjacent material processing chambers 21 can be switched between two states: disconnected and connected. When adjacent material processing chambers 21 are not connected, material can be fed into the upstream material processing chamber 21, and the processing component 6 can simultaneously heat and sinter or cool the powder material in the downstream material processing chamber 21. When adjacent material processing chambers 21 are not connected, the powder material in the upstream material processing chamber 21 can also be heated and sintered or cooled, and the powder material in the downstream material processing chamber 21 can be discharged. When adjacent material processing chambers 21 are connected, the outlet of the downstream material processing chamber 21 is closed, and the powder material in the upstream material processing chamber 21 is sent into the downstream material processing chamber 21.

[0050] The powder processing apparatus provided in this embodiment divides the material channel 2 into at least two material processing chambers 21. By controlling the opening and closing of the feed valve 3, continuous powder material processing can be achieved, thereby greatly improving the processing efficiency of powder materials and reducing production costs. Moreover, compared with the entire material channel, the volume of a single material processing chamber 21 is smaller, making it easier for powder materials to fill the material processing chamber 21. Furthermore, by sequentially heating and sintering or cooling the powder materials through at least two material processing chambers 21, the powder materials can be gradually heated or cooled, improving the thermal uniformity when the powder materials are heated, sintered, or cooled using the processing component 6, and thus improving the production quality.

[0051] Optionally, at least two material channels 2 are arranged sequentially in a vertical direction; the inlet of the material processing chamber 21 is located at its top, and the outlet of the material processing chamber 21 is located at its bottom; the outlet of the downstream material processing chamber 21 is connected to a discharge valve 4. When the discharge valve 3 or discharge valve 4 corresponding to the material processing chamber 21 is opened, the powder material in the material processing chamber 21 can fall under its own weight. The structure is simple, the cost is low, and there is no need to set up a special feeding mechanism.

[0052] Optionally, the processing components 6 are arranged one-to-one with the material processing chambers 21, enabling independent temperature control of each material processing chamber 21. This facilitates gradual heating or cooling of the powder material in at least two material processing chambers 21 distributed from top to bottom, improving the temperature uniformity of the powder material. For example, when the processing component 6 is used to heat and sinter the powder material, the processing component 6 includes electric heaters. By controlling the operating current of each electric heater, the heating rate and temperature range of the powder material in each material processing chamber 21 can be controlled, allowing the powder material in each material processing chamber 21 distributed from top to bottom to gradually heat up. It can also control the operating current of each processing component 6 according to the type of powder material to meet the temperature requirements for heating and sintering different types of powder materials. For example, the temperature range during heating and sintering is 100℃-900℃.

[0053] For example, when the processing component 6 is used to cool powder materials, the processing component 6 includes a heat exchanger that uses convective heat transfer to cool the powder materials in the material processing chamber 21. For example, the temperature range during cooling is -10℃ to 30℃. The heat exchanger is provided with a cooling inlet valve and a cooling outlet valve, respectively. The cooling inlet valve and / or the cooling outlet valve are adjustable in opening, such as solenoid valves. By adjusting the opening of the cooling inlet valve and / or the cooling outlet valve, the flow rate of the cooling fluid can be regulated, thereby controlling the cooling rate and temperature range of the powder materials in each material processing chamber 21, and achieving gradual cooling of the powder materials in each material processing chamber 21 distributed from top to bottom. The opening of the cooling inlet valve and / or the cooling outlet valve can also be adjusted according to the type of powder material to meet the temperature requirements when cooling different powder materials.

[0054] Optionally, the upstream material handling chamber 21 is equipped with a feed valve 5 at its inlet; each material handling chamber 21 is provided with a gas inlet and a gas outlet; the gas inlet is equipped with an inlet valve 7, and the inlet of the inlet valve 7 is connected to a gas supply unit 60 for providing protective gas; the gas outlet is equipped with an exhaust valve 8. The protective gas can be nitrogen, argon, a nitrogen-argon mixture, oxygen, etc., and the specific protective gas is selected according to the type of powder material.

[0055] By controlling the opening and closing of the feeding valve 3, the infeed valve 5, and the discharge valve 4, each material processing chamber 21 can form an independent closed space. When the powder material in any material processing chamber 21 is heated and sintered or cooled by the processing component 6, the gas inlet valve 7 of the gas inlet of the material processing chamber 21 is opened, and the exhaust valve 8 of the gas outlet of the material processing chamber 21 is opened. The gas supply unit 60 is controlled to send protective gas into the material processing chamber 21 through the gas inlet, providing a stable gas atmosphere environment for the sintering of the powder material in the material processing chamber 21. The protective gas in the material processing chamber 21 is discharged through the exhaust valve 8, so as to achieve a stable and singular gas atmosphere in the material processing chamber 21 and improve the processing effect when heating and sintering or cooling the powder material.

[0056] Optionally, the gas inlet and gas outlet of each material handling chamber 21 are respectively located on opposite side walls adjacent to the top wall of the material handling chamber 21, which is beneficial to fill the entire material handling chamber 21 with protective gas.

[0057] When powder materials are simply allowed to fall by gravity, they may accumulate and become blocked in the material channel 2 due to their tendency to clump and their low weight. Therefore, optionally, the gas inlet of the same material handling chamber 21 is higher than the gas outlet.

[0058] Specifically, in two adjacent material processing chambers 21, during the process of the powder material falling from the upper material processing chamber 21 to the lower material processing chamber 21, the corresponding air inlet valve 7 of the upper material processing chamber 21 is opened and the corresponding air outlet valve 8 is closed, while the corresponding air inlet valve 7 of the lower material processing chamber 21 is closed and the corresponding air outlet valve 8 is opened. The gas entering the top of the upper material processing chamber 21 presses down on the powder material, causing the powder material in the upper material processing chamber 21 to fall into the lower material processing chamber 21.

[0059] The protective gas is controlled by the opening and closing states of the inlet valve 7 and the exhaust valve 8. It not only provides a stable gas atmosphere for the powder material during heating, sintering or cooling, but also helps the powder material fall due to its own weight, reducing the probability of powder material accumulating in the material chamber. This shortens the time required to empty the powder material in each material processing chamber 21 and improves the powder processing efficiency.

[0060] Optionally, the powder handling device also includes a feeding hopper 1 located above the material channel 2. The discharge port at the bottom of the feeding hopper 1 and the inlet at the top of the uppermost material handling chamber 21 are connected by a feeding valve 5. When the feeding valve 5 is closed, feeding is performed on the feeding hopper 1, which ensures that the feeding of the feeding hopper 1 does not affect the processing of powder materials in the entire material channel 2; and when the feeding valve 5 is opened, the powder materials in the feeding hopper 1 can fall into the uppermost material handling chamber 21 by their own weight.

[0061] To facilitate the falling of powder material in the feeding hopper 1 into the upstream material processing chamber 21, optionally, a pressure gas port is provided at the top of the feeding hopper 1, connected to a pressure valve 10, the inlet of which is connected to an air supply unit. When feeding material into the upstream material processing chamber 21 through the feeding hopper 1, the pressure valve 10 and the exhaust valve 8 corresponding to the upstream material processing chamber 21 can be opened, while the air inlet valve 7 corresponding to the upstream material processing chamber 21 can be closed. The gas entering the top of the feeding hopper 1 presses down on the powder material in the feeding hopper 1, and combined with the weight of the powder material in the feeding hopper 1, it facilitates the falling of the powder material in the feeding hopper 1 into the downstream material processing chamber 21, thereby improving the feeding rate.

[0062] To meet the requirements for the powder flow rate, the powder flow rate of the material falling from the feeding hopper 1 into the upstream material processing chamber can be adjusted. There are several adjustment methods, such as adjusting the opening of the pressure valve 10. By adjusting the opening of the pressure valve 10, the air pressure regulation rate within the feeding hopper 1 can be adjusted, thereby regulating the powder flow rate as the material falls from the feeding hopper 1 into the upstream material processing chamber. Alternatively, the air supply unit 60 includes an air storage tank 601 and an air pump 603. The air storage tank 601 is connected to the inlet of the pressure valve 10 via the air pump 603, which is a variable displacement pump. By adjusting the discharge rate of the air pump 603, the air pressure regulation rate within the feeding hopper 1 can also be adjusted.

[0063] For example, the inlet of the pressure valve 10 and the inlet of the air inlet valve 7 are connected to the same air supply unit 60 to simplify the structure and reduce costs. In other embodiments, the pressure valve 10 and each air inlet valve 7 may each be provided with an air supply unit 60, or multiple air inlet valves 7 may share a single air supply unit 60 and the pressure valve 10 may be provided with a separate air supply unit 60.

[0064] It should be noted that for the same type of powder material, the protective gas used in different material processing chambers 21 is the same; however, for different powder materials, the protective gas used in material processing chambers 21 may be different. Therefore, optionally, multiple gas storage tanks 601 are provided, and these multiple gas storage tanks 601 are connected to the inlet of the air pump 603 one-to-one through multiple air supply control valves 602. The required protective gas is determined based on the powder material, and then the corresponding air supply control valve 602 is opened.

[0065] Optionally, in two adjacent material handling chambers 21, the flow rate of powder falling from the upper material handling chamber 21 to the lower material handling chamber 21 is adjustable. Specifically, the opening degree of the air inlet valve 7 can be adjustable; the opening degree of the exhaust valve 8 can also be adjustable; or the air pump 603 can be a variable pump.

[0066] In two adjacent material handling chambers 21, during the process of powder material falling from the upper material handling chamber 21 to the lower material handling chamber 21, the inlet valve 7 of the upper material handling chamber 21 is opened and the exhaust valve 8 of the corresponding valve is closed, while the inlet valve 7 of the lower material handling chamber 21 is closed and the exhaust valve 8 of the corresponding valve is opened. By adjusting the opening degree of the inlet valve 7 of the upper material handling chamber 21 and the opening degree of the exhaust valve 8 of the lower material handling chamber 21, the falling speed of the powder material in the material handling chamber 21 can be adjusted by adjusting the inlet speed and the exhaust speed of the protective gas.

[0067] Optionally, a feeding port is provided at the top of the feeding hopper 1, and a feeding valve 11 is installed at the feeding port. When it is necessary to feed material into the feeding hopper 1, the feeding valve 11 is opened. During the process of using gas to pressurize the powder material in the feeding hopper 1 and make the powder material fall into the material channel 2, the feeding valve 11 is closed.

[0068] To enable the recycling of protective gas, the outlet of the exhaust valve 8 may optionally be connected to the inlet of the air pump 603. Exemplarily, the outlet of the exhaust valve 8 is connected between the inlet of the air pump 603 and the air supply control valve 602. The protective gas discharged through the exhaust valve 8 can then be sent back to the corresponding material handling chamber 21 via the air pump 603.

[0069] Optionally, the material channel 2 is an S-shaped channel. This design facilitates the control of the falling speed of powder material in the corresponding material processing chamber 21 after the feed valve 3 and discharge valve 4 are opened.

[0070] Optionally, the outer wall of the material channel 2 is provided with a heat insulation layer 9 to prevent heat loss, reduce the influence of the external ambient temperature on the temperature of the powder material in the material channel 2, and improve the control accuracy of the temperature of the powder material in the material channel 2.

[0071] Optionally, the powder processing device further includes an angle adjustment component 20, which is used to adjust the tilt angle of the extension direction of the material channel 2 relative to the vertical direction, so as to adjust the flow rate of the powder material.

[0072] Specifically, the angle adjustment assembly 20 includes a chain drive unit and a drive unit. The driven sprocket 202 of the chain drive unit is fixedly connected to the material channel 2. The drive unit is connected to the driving sprocket 201 of the chain drive unit and drives the driving sprocket 201 to rotate. When the drive unit is working, the driving sprocket 201 of the chain drive unit drives the driven sprocket 202 to rotate via the chain 203, causing the material channel 2 to rotate with the driven sprocket 202. This achieves the purpose of adjusting the flow rate of the powder material and, to a certain extent, also reduces the probability of powder material accumulation and blockage.

[0073] For example, the drive unit is a motor, and the powder handling device also includes a frame 30. The chain drive unit includes a drive shaft and a driven shaft. The drive sprocket 201 is fixedly sleeved on the drive shaft, and the two axial ends of the drive shaft are rotatably connected to the frame 30 through bearings. The driven sprocket 202 is fixedly sleeved on the driven shaft, and the two axial ends of the driven shaft are rotatably connected to the frame 30 through bearings. The material channel 2 is fixedly connected with mounting ear plates 40. There are two mounting ear plates 40, which are spaced apart along the axial direction of the driven shaft and are fixedly sleeved on the driven shaft.

[0074] The motor rotation drives the drive sprocket 201 to rotate, and the drive sprocket 201 drives the driven sprocket 202 to rotate through the chain 203 of the chain transmission unit. The driven shaft rotates with the driven chain 203, and the mounting ear plate 40 rotates with the driven shaft, thereby realizing the rotation of the material channel 2 connected to the mounting ear plate 40 and realizing the adjustment of the tilt angle of the material channel 2 relative to the vertical direction.

[0075] The chain drive unit offers good transmission stability and load-bearing capacity, which helps improve the stability of the material channel 2 during angle adjustment. In other embodiments, the chain drive unit can be replaced by a belt drive unit or a gear drive unit.

[0076] In other embodiments, angle adjustment components 20 with different structures can also be used. For example, the upper end of the material channel 2 is rotatably mounted on the frame 30, and a cam is rotatably mounted on the frame 30. The outer peripheral wall of the cam abuts against the middle or lower end of the material channel 2, and the rotation of the cam causes the material channel 2 to rotate around the rotation axis rotatably connected to the frame 30. Another example is that the upper end of the material channel 2 is rotatably mounted on the frame 30, and a telescopic drive component, such as a cylinder, a motor, or a gear rack structure, is mounted on the frame 30. The telescopic end of the telescopic drive component is connected to and abuts against the middle or lower end of the material channel 2. By controlling the extension and retraction of the telescopic end of the telescopic drive component, the material channel 2 can be pushed or pulled to rotate around the rotation axis rotatably connected to the frame 30, thereby adjusting the tilt angle of the material channel 2 relative to the vertical direction.

[0077] Optionally, the powder processing device further includes a vibration assembly 50. The vibration excitation end of the vibration assembly 50 is connected to the powder processing device. The vibration assembly 50 is configured to cause the powder processing device to reciprocate along the vertical direction, the horizontal direction, and a specified inclined direction that forms an angle with both the vertical and horizontal directions. When the vibration assembly 50 operates, the entire material channel 2 can reciprocate along the vertical direction, the horizontal direction, and a specified inclined direction that forms an angle with both the vertical and horizontal directions under the drive of the vibration platform 501, thereby preventing the accumulation and blockage of powder materials in the material channel 2. In addition, when the powder materials in the material processing chamber 21 are subjected to heating and sintering treatment or cooling treatment, the vibration assembly 50 can also make the powder materials heated or cooled more uniformly, improving the consistency of the powder materials obtained after processing.

[0078] Specifically, the vibration assembly 50 includes a vibration platform 501 and a vibration drive unit. The frame 30 is mounted on the vibration platform 501, and the vibration excitation end of the vibration drive unit is connected to the vibration platform 501. The vibration drive unit is capable of enabling the vibration platform 501 to reciprocate along the vertical direction, the horizontal direction, and a specified tilt direction that forms an angle with both the vertical and horizontal directions. For example, the vibration drive unit can be an existing exciter.

[0079] This embodiment also provides a lithium-ion solid electrolyte preparation device, including a powder heat treatment device 100 and a powder cooling device 200, wherein the powder cooling device 200 is located downstream of the powder heat treatment device 100; after the powder material is heated and sintered using the powder heat treatment device 100, the powder cooling device 200 is used to cool the heated and sintered powder material. At least one of the powder heat treatment device 100 and the powder cooling device 200 is the powder processing device provided in this embodiment. When the powder processing device is used as the powder heat treatment device 100, the processing component 6 of the powder processing device is used to heat and sinter the powder material in the material processing chamber 21; when the powder processing device is used as the powder cooling device 200, the processing component 6 of the powder processing device is used to cool the powder material in the material processing chamber 21.

[0080] For example, such as Figure 2 As shown, both the powder heat treatment device 100 and the powder cooling device 200 adopt the powder processing device provided in this embodiment. The material channel 2 of the powder heat treatment device 100 is a material heating treatment channel, and the material channel 2 of the powder cooling device 200 is a material cooling treatment channel. The lowermost end of the material heating treatment channel can be connected to the uppermost end of the material cooling treatment channel so that the powder discharged from the material heating treatment channel can fall into the material cooling treatment channel for cooling treatment after the heating and sintering treatment is completed. When the powder processing device is used in a lithium-ion solid electrolyte preparation device, the powder material is a solid electrolyte powder for preparing the electrode sheet of a lithium-ion battery, such as sulfide solid electrolyte powder, oxide solid electrolyte powder, etc.

[0081] It should be noted that the number of material handling chambers 21 in the powder heat treatment device 100 and the number of material handling chambers 21 in the powder cooling device 200 may be different. For example, the powder heat treatment device 100 has four material handling chambers 21, and the powder cooling device 200 has two material handling chambers 21.

[0082] For example, the powder heat treatment device 100 and the powder cooling device 200 are each equipped with an angle adjustment component 20. For lithium-ion solid electrolyte preparation equipment, when adjusting the tilt angle of the material channel 2 relative to the vertical direction through the angle adjustment component 20, it is necessary to ensure that the material heating treatment channel of the powder heat treatment device 100 and the material cooling treatment channel of the powder cooling device 200 operate synchronously. Specifically, the lowermost end of the material heating treatment channel and the uppermost end of the material cooling treatment channel are fixedly connected. By controlling the synchronous operation of the two angle adjustment components 20, the material heating treatment channel and the material cooling treatment channel can operate synchronously.

[0083] In other embodiments, when the lowermost end of the material heating channel and the uppermost end of the material cooling channel are fixedly connected, the powder heat treatment device 100 and the powder cooling device 200 can share a single angle adjustment component 20 to ensure synchronous operation of the material heating and cooling channels. Alternatively, the lowermost end of the material heating channel and the uppermost end of the material cooling channel can be rotatably connected to allow relative rotation without affecting the falling of powder material from the material heating channel to the material cooling channel. To facilitate relative rotation, the lowermost end of the material heating channel is connected to the uppermost end of the material cooling channel via a flexible hose.

[0084] The powder heat treatment device 100 and the powder cooling device 200 have roughly the same structure. One difference is that the processing component 6 of the powder cooling device 200 includes a heat exchanger, which can cool the powder material in the material channel 2 through liquid cooling or air cooling. Another difference is that the number of material processing chambers 21 in the powder cooling device 200 and the number of material processing chambers 21 in the powder heat treatment device 100 may be different.

[0085] The following describes the specific working process of the lithium-ion solid electrolyte preparation equipment when heating and sintering lithium-ion powder and cooling it, taking the example that the material heating treatment channel is divided into four material treatment chambers 21 and the material cooling treatment channel is divided into two material treatment chambers 21.

[0086] To facilitate the description of the working process of the powder processing device, the four material processing chambers 21 of the material heating treatment channel are respectively named the first material heating treatment chamber, the second material heating treatment chamber, the third material heating treatment chamber and the fourth material heating treatment chamber in order from top to bottom; and the two material processing chambers 21 of the material cooling treatment channel are respectively named the first material cooling treatment chamber and the second material cooling treatment chamber.

[0087] The specific working process of the lithium-ion solid electrolyte preparation equipment is as follows:

[0088] Close the pressure valve 10 and the feed valve 5 at the top of the first material heating chamber, and open the feeding valve 11. The powder material enters the feeding hopper 1 through the feeding port.

[0089] After feeding is completed, close the feed valve 5, the discharge valve 3 at the bottom of the first material heating chamber and the corresponding air inlet valve 7 of the first material heating chamber, and open the pressure valve 10, the corresponding air supply control valve 602 and the corresponding exhaust valve 8 of the first material heating chamber; control the air pump 603 to work, and the compressed gas in the air storage tank 601 enters the feeding hopper 1 through the air pump 603, the air supply control valve 602 and the pressure valve 10. The compressed gas in the feeding hopper 1 presses down on the powder material in the feeding hopper 1, and at the same time, with the gravity of the powder material in the feeding hopper 1, the powder material in the feeding hopper 1 falls into the first material heating chamber.

[0090] When the first material processing heating chamber is filled with powder material, close the pressure valve 10 and the feed valve 5 at the top and the discharge valve 3 at the bottom of the first material processing heating chamber; open the air inlet valve 7 and the exhaust valve 8 corresponding to the first material processing heating chamber, control the air pump 603 to work, and the compressed gas in the air storage tank 601 enters the first material processing heating chamber through the air pump 603, the air supply control valve 602 and the air inlet valve 7, and is discharged through the exhaust valve 8; at the same time, control the processing component 6 corresponding to the first material processing heating chamber to work, so as to heat and sinter the powder material in the first material processing heating chamber.

[0091] When the powder material in the first material heating chamber is heated and sintered, the processing component 6 corresponding to the first material heating chamber stops working, and the discharge valve 3 at the bottom of the second material heating chamber is closed. The air inlet valve 7 corresponding to the first material heating chamber is opened and the exhaust valve 8 corresponding to the first material heating chamber is closed. The air inlet valve 7 corresponding to the second material heating chamber is closed and the exhaust valve 8 corresponding to the first material heating chamber is opened. The air pump 603 is controlled to work, and the compressed gas in the air storage tank 601 enters the first material heating chamber through the air pump 603, the air supply control valve 602, and the air inlet valve 7 corresponding to the first material heating chamber, and is discharged through the exhaust valve 8 corresponding to the second material heating chamber. The compressed gas above the first material heating chamber presses down on the powder material in the first material heating chamber. At the same time, with the help of gravity, the powder material in the first material heating chamber falls into the second material heating chamber. At the same time, the powder material in the feed hopper 1 is added back into the first material heating chamber.

[0092] When the powder material in the second material heating chamber has completely fallen into the second material heating chamber, the powder material in the first material heating chamber has been heated and sintered. This makes it easier to fall the powder material in the first material heating chamber into the second material heating chamber when heating and sintering the powder material in the third material heating chamber.

[0093] The loading, heating, sintering, and unloading processes of the third material heating treatment chamber are similar to those of the second material heating treatment chamber, and will not be repeated here.

[0094] After the powder material in the fourth material heating chamber is heated and sintered, it is sequentially sent to the first material cooling chamber; after it is cooled in the first material cooling chamber, the discharge valve 4 at the bottom of the first material cooling chamber is opened to discharge it.

[0095] The feeding, cooling, and discharging processes of the first and second material cooling chambers are similar to those of the material heating chamber, and will not be repeated here.

[0096] The lithium-ion solid electrolyte preparation equipment provided in this embodiment can not only gradually heat and sinter the powder material in the material channel 2, but also gradually cool it down, and can also realize continuous production of powder preparation, thereby greatly improving the preparation efficiency of powder material and reducing production costs.

[0097] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A lithium-ion solid electrolyte preparation apparatus, characterized in that, It includes a powder heat treatment device (100) and a powder cooling device (200), wherein the powder cooling device (200) is disposed downstream of the powder heat treatment device (100); At least one of the powder heat treatment device (100) and the powder cooling device (200) is a powder processing device, the powder processing device comprising: Material channel (2), the material channel (2) includes at least two material handling chambers (21) arranged in sequence, and at least two material channels (2) are arranged in sequence along the vertical direction; The discharge valve (3) connects the discharge port of the upstream material processing chamber (21) to the inlet of the downstream material processing chamber (21) through the discharge valve (3). The processing component (6) is used to heat and sinter or cool the powder material in the material processing chamber (21). The processing component (6) is provided in a one-to-one correspondence with the material processing chamber (21). An angle adjustment component (20) is used to adjust the tilt angle of the extension direction of the material channel (2) relative to the vertical direction; Vibration assembly (50), the vibration excitation end of the vibration assembly (50) is connected to the material channel (2), the vibration assembly (50) is configured to cause the material channel (2) to reciprocate along the vertical direction, the horizontal direction and a specified inclined direction that is at an angle to both the vertical direction and the horizontal direction.

2. The lithium-ion solid electrolyte preparation equipment according to claim 1, characterized in that, The material handling chamber (21) has its inlet located at its top and its outlet located at its bottom. The discharge port of the downstream material handling chamber (21) is connected to a discharge valve (4).

3. The lithium-ion solid electrolyte preparation equipment according to claim 2, characterized in that, The material handling chamber (21) at the top of the uppermost material handling chamber (21) is provided with a feed valve (5); each material handling chamber (21) is provided with a gas inlet and a gas outlet located below the gas inlet; The gas inlet is provided with an inlet valve (7), and the inlet of the inlet valve (7) is connected to a gas supply unit (60) for providing protective gas; the gas outlet is provided with an exhaust valve (8).

4. The lithium-ion solid electrolyte preparation equipment according to claim 3, characterized in that, The gas supply unit (60) includes: Gas storage tank (601), wherein multiple gas storage tanks (601) are provided; Gas supply control valve (602), which corresponds one-to-one with the gas storage tank (601); An air pump (603) is provided. The air storage tank (601) is connected to the inlet of the air pump (603) through the corresponding air supply control valve (602). The outlet of the air pump (603) is connected to the inlet of the air inlet valve (7).

5. The lithium-ion solid electrolyte preparation equipment according to claim 3, characterized in that, It also includes a feeding hopper (1) located above the material channel (2), and the discharge port at the bottom of the feeding hopper (1) and the inlet at the top of the material processing chamber (21) are connected by a feeding valve (5).

6. The lithium-ion solid electrolyte preparation apparatus according to claim 5, characterized in that, The top of the feeding hopper (1) is provided with a pressure gas port, and the pressure gas port is connected to a pressure valve (10). The inlet of the pressure valve (10) is connected to a gas supply unit (60) for providing protective gas.

7. The lithium-ion solid electrolyte preparation apparatus according to any one of claims 1 to 6, characterized in that, The material channel (2) is an S-shaped channel.

8. The lithium-ion solid electrolyte preparation equipment according to claim 1, characterized in that, The angle adjustment component (20) includes: A chain drive unit, wherein the driven sprocket (202) of the chain drive unit is fixedly connected to the material channel (2); A drive unit is connected to the drive sprocket (201) of the chain drive unit and is used to drive the drive sprocket (201) to rotate.

9. The lithium-ion solid electrolyte preparation equipment according to claim 1, characterized in that, The material channel (2) of the powder heat treatment device (100) is a material heating treatment channel, and the material channel (2) of the powder cooling device (200) is a material cooling treatment channel; the lowermost end of the material heating treatment channel can be connected to the uppermost end of the material cooling treatment channel; The lowermost end of the material heating treatment channel and the uppermost end of the material cooling treatment channel are fixedly or rotatably connected.

Images