Lithium powder coating device

Abstract

The present disclosure relates to a lithium powder coating device, which comprises: a material bin; a diverter plate, on which a plurality of diverter holes are evenly distributed around the circumference; a material guide assembly, arranged between the material bin and the diverter plate, to evenly guide the material in the material bin into each of the diverter holes; and a coating structure, connected to the diverter holes on the diverter plate through a conveying channel, for receiving the material at the diverter holes and evenly outputting the material for coating. The present invention solves the problem that the existing method of coating lithium powder is low in safety and prone to certain accidents.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery production equipment, and in particular, to a lithium powder coating device. Background Art

[0002] At present, for the negative electrode of lithium batteries, part of the lithium will be consumed during the first charging process of the battery due to the formation of the solid electrolyte membrane, which will cause the loss of lithium in the positive electrode material, thereby reducing the capacity of the battery and causing a decrease in the first efficiency. This is particularly evident in the negative electrode with alloy materials (such as silicon alloys and tin alloys, etc.) as active materials. In order to reduce the reduction in battery capacity caused by the irreversible capacity of the battery during the first charge and discharge process, it is generally necessary to supplement lithium to the negative electrode.

[0003] In order to achieve the effect of uniform coating of lithium powder, the existing technology has adopted a method of making lithium powder with static electricity and controlling the adsorption of lithium powder by electric field. However, lithium powder with static electricity is prone to generate sparks and explosion during use, which poses certain major safety hazards. Another way is to use the method of spraying lithium powder + electrostatic adsorption to replenish lithium to the electrode, which can also complete the lithium replenishment process. However, the method of spraying lithium powder will also cause some lithium powder to remain in the air. At the same time, making lithium powder with static electricity will also pose a greater safety hazard. If it is not handled properly, it is easy to generate static sparks, which may easily cause accidents such as explosions. In addition, the use of electrostatic generators requires high voltage and low current, which also poses certain risks in use.

[0004] Therefore, there is an urgent need for a lithium powder coating device that has high safety performance and can achieve a uniform coating effect. Summary of the invention

[0005] The purpose of the present disclosure is to provide a lithium powder coating device, which solves the problem that the existing method of coating lithium powder is low in safety and prone to certain accidents.

[0006] In order to achieve the above-mentioned object, the first aspect of the present disclosure provides a lithium powder coating device, comprising:

[0007] Silo;

[0008] A diverter plate, wherein a plurality of diverter holes are evenly distributed on the circumference of the diverter plate;

[0009] A material guide assembly is disposed between the material bin and the diverter plate to uniformly guide the material in the material bin into each of the diverter holes;

[0010] The coating structure is connected to the diverter hole on the diverter plate through a conveying channel, and is used to receive the material at the diverter hole and evenly output it for coating.

[0011] Optionally, the material guiding component comprises:

[0012] The rotating umbrella head is conical and comprises a first tip portion and a second portion arranged opposite to the first tip portion, wherein the first tip portion is arranged facing the center of the discharge port of the silo;

[0013] A receiving body, on which a plurality of slides are arranged, the plurality of slides are arranged around the axis of the rotating umbrella head, one end of each of the slides is arranged corresponding to each of the diversion holes, and the other end is arranged facing the edge of the second part of the rotating umbrella head, and the edges of two adjacent slides are connected to each other;

[0014] The first driving structure is arranged at the splitter plate to control the rotation of the rotating umbrella head.

[0015] Optionally, the first driving structure includes:

[0016] First motor;

[0017] A transmission shaft, one end of which is connected to the second part of the rotating umbrella head, and the other end of which passes through the diverter plate;

[0018] The rotating shaft of the first motor is transmission-connected to the transmission shaft.

[0019] Optionally, the lithium powder coating device further comprises a sealing cover;

[0020] A fixing seat for fixing the silo is arranged above the diverter plate, and the sealing cover is arranged between the fixing seat and the diverter plate, so that a closed space is formed between the fixing seat, the diverter plate and the sealing cover.

[0021] Optionally, the lithium powder coating device further includes a gas injection structure;

[0022] The transmission shaft is a hollow structure, and a ventilation hole is provided at the portion of the transmission shaft located between the splitter plate and the rotating umbrella head;

[0023] The gas injection structure is connected to one end of the transmission shaft extending out of the diverter plate;

[0024] There is a gap between the end portion on the receiving body and the edge of the second portion of the rotating umbrella head.

[0025] Optionally, the lithium powder coating device further comprises a funnel, and the funnel is connected to the discharge port of the silo;

[0026] Wherein, the first tip portion of the rotating umbrella head is arranged at the center of the discharge end of the funnel.

[0027] Optionally, a control switch is provided at the discharge end of the funnel.

[0028] Optionally, the lithium powder coating device further includes a second driving structure;

[0029] The silo is rotatably disposed on the fixed seat;

[0030] The second driving structure is disposed on the fixing seat and connected to the silo to drive the silo to rotate.

[0031] Optionally, the lithium powder coating device further includes a first vibrator, and the first vibrator is disposed on the fixing seat.

[0032] Optionally, the coating structure comprises:

[0033] A coating block, wherein a slide groove is provided on the coating block;

[0034] A pipeline stop block is arranged above the coating block, and a plurality of through holes are arranged at equal intervals on the pipeline stop block, and the through holes are arranged opposite to the slide groove;

[0035] A plurality of conveying channels are provided, and one end of the conveying channel is connected to the diversion hole on the diversion plate, and the other end is connected to the through hole.

[0036] Optionally, the plurality of through holes are arranged in two rows at equal intervals on the pipeline limiting block, wherein each through hole in one row is located between two adjacent through holes in another row.

[0037] Optionally, the slide groove includes a first inclined portion and a second inclined portion;

[0038] The first inclined portion is arc-shaped and is arranged directly opposite to the through hole;

[0039] The second inclined portion is in a straight line shape and connected to the first inclined portion;

[0040] Wherein, the slope of the second slope portion is smaller than the slope of the first slope portion.

[0041] Optionally, the coating structure further includes a second vibrator, and the second vibrator is arranged at one side of the coating block.

[0042] Optionally, the lithium powder coating device further comprises a fixed bracket, and the fixed bracket is connected to the diverter plate.

[0043] Through the above technical scheme, by setting the silo, diverter plate, material guide assembly and coating structure, when coating lithium powder, the lithium powder in the silo can be evenly dropped into each diverter hole of the diverter plate through the material guide assembly, so that the lithium powder is evenly distributed. After that, the lithium powder can be input to the coating structure through the conveying channel again, so that the lithium powder can be evenly output through the coating structure. In this way, it can be ensured that the entire process of coating lithium powder is relatively safe and stable, and accidents are not likely to occur during the coating process. At the same time, the coating method is relatively simple, which is convenient for lithium powder coating.

[0044] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0046] Figure 1 It is a schematic diagram of the overall structure of the lithium powder coating device provided in an embodiment of the present disclosure.

[0047] Figure 2 It is a front structural schematic diagram of the lithium powder coating device provided in an embodiment of the present disclosure.

[0048] Figure 3 It is a schematic diagram of the structure of the lithium powder coating device in use state provided by an embodiment of the present disclosure.

[0049] Figure 4 It is a structural schematic diagram of the coating result of the lithium powder coating device provided in an embodiment of the present disclosure.

[0050] Figure 5 It is a schematic cross-sectional structural diagram of the coating structure of the lithium powder coating device provided in an embodiment of the present disclosure.

[0051] Figure 6 It is a schematic diagram of the distribution of the diversion holes on the diversion plate of the lithium powder coating device provided in an embodiment of the present disclosure.

[0052] Figure 7 It is a schematic diagram of the distribution of through holes on the pipeline limit block of the lithium powder coating device provided in an embodiment of the present disclosure.

[0053] Description of Reference Numerals

[0054] 1. Material silo; 11. Fixed seat; 12. First vibrator; 2. Diverter plate; 21. Diverter hole; 22. Fixed bracket; 23. Conveying pipeline; 3. Material guide assembly; 31. Rotating umbrella head; 311. First tip portion; 312. Second portion; 32. Slide; 33. First driving structure; 331. First motor; 332. Transmission shaft; 4. Sealing cover; 5. Gas injection structure; 6. Funnel; 61. Control switch; 7. Second motor; 8. Coating structure; 81. Coating block; 811. First inclined portion; 812. Second inclined portion; 82. Pipeline limit block; 821. Through hole; 83. Second vibrator. DETAILED DESCRIPTION

[0055] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0056] The present disclosure provides a lithium powder coating device, such as Figure 1 , Figure 2 and Figure 3 As shown, the lithium powder coating device includes a silo 1, a diverter plate 2, a material guide assembly 3 and a coating structure 8, wherein the diverter plate 2 is arranged below the silo 1, and a plurality of diverter holes 21 are evenly distributed on the circumference of the diverter plate 2 (see Figure 6 ), the material guide assembly 3 is disposed between the silo 1 and the diverter plate 2 to uniformly guide the material in the silo 1 into each diverter hole 21. The coating structure 8 can be connected to the diverter hole 21 on the diverter plate 2 through the conveying channel 23 to receive the material at the diverter hole 21 and uniformly output the material for coating.

[0057] Through the setting of this structure, in the process of using this lithium powder coating device to coat lithium powder, a certain amount of lithium powder can be first loaded into the silo 1, and then the lithium powder in the silo 1 can be uniformly introduced into each diversion hole 21 through the material guide component 3, and then the lithium powder entering the diversion hole 21 can be input into the coating structure 8 through the conveying channel 23, so that the lithium powder can be evenly distributed in the coating structure 8, and finally the lithium powder can be evenly output through the coating structure 8, so as to complete the uniform coating of the lithium powder. In this way, the entire process of coating lithium powder is relatively safe and stable, and it is not easy to have accidents during the coating process. At the same time, the coating method is relatively simple, which is convenient for the work of lithium powder coating.

[0058] In some embodiments, Figure 2 and Figure 3 As shown, a fixing seat 11 for fixing the silo 1 is provided above the diverter plate 2 . The silo 1 passes through the fixing seat 11 and is rotatably provided on the fixing seat 11 , so that the silo 1 is stably fixed above the diverter plate 2 .

[0059] In addition, the lithium powder coating device further includes a second driving structure, which is disposed on the fixing seat 11 and connected to the silo 1 to drive the silo 1 to rotate.

[0060] In this way, when the silo 1 needs to be used for dropping materials, the second driving structure can be used to control the rotation of the silo 1 , so that the lithium powder in the silo 1 can be evenly dropped out from the discharge end of the silo 1 .

[0061] It should be noted that the above-mentioned second driving structure may include a second motor 7, which is fixedly connected to a fixed seat 11. A main synchronous pulley may be arranged on the rotating shaft of the second motor 7. Correspondingly, a secondary synchronous pulley is fixedly arranged on the silo 1, and a synchronous belt is connected between the main synchronous pulley and the secondary synchronous pulley, so that when the second motor 7 is running, the silo 1 can be driven to rotate.

[0062] In a further embodiment, Figure 2 and Figure 3 As shown, the lithium powder coating device may further include a first vibrator 12 , which is fixedly disposed on the fixing seat 11 .

[0063] By utilizing the configuration of the first vibrator 12 , when the silo 1 is emptying, the first vibrator 12 can be started to vibrate, thereby enabling the lithium powder in the silo 1 to fall more smoothly.

[0064] In some embodiments, Figure 1 and Figure 3 As shown, the lithium powder coating device may further include a fixed bracket 22 , which is fixedly connected to the diverter plate 2 .

[0065] By using the setting of the fixing bracket 22, the lithium powder coating device can be set at a specified position to fix the lithium powder coating device to the location where lithium powder coating is required, thereby stably performing the lithium powder coating work.

[0066] In some embodiments, Figure 1 and Figure 2As shown, the material guide assembly 3 includes a rotating umbrella head 31, a receiving body and a first driving structure 33. The rotating umbrella head 31 is conical. Specifically, the rotating umbrella head 31 includes a first tip portion 311 and a second portion 312 arranged relative to the first tip portion 311, and the first tip portion 311 is arranged opposite to the center of the discharge port of the silo 1, so that after the material in the silo 1 is discharged, it can pass through the first tip portion 311 of the rotating umbrella head 31 and move down along the outer wall of the rotating umbrella head 31, so as to ensure that the lithium powder is evenly scattered around. A plurality of slides 32 are arranged on the receiving body, and the plurality of slides 32 are arranged around the axis of the rotating umbrella head 31, wherein one end of each slide 32 is respectively fixedly connected to the diverter plate 2 and is respectively arranged corresponding to each diverter hole 21, and the other end is respectively arranged opposite to the edge of the second portion 312 of the rotating umbrella head 31, and the edges of two adjacent slides 32 are connected to each other.

[0067] The first driving structure 33 is disposed at the splitter plate 2 and connected to the rotating umbrella head 31 to control the rotation of the rotating umbrella head 31 .

[0068] Through this structure, when the silo 1 is used to drop materials, the first driving structure 33 can be used to drive the rotating umbrella head 31 to rotate, and then the lithium powder in the silo 1 falls onto the first tip portion 311 of the rotating umbrella head 31. At this time, due to the rotation of the rotating umbrella head 31, the lithium powder can be easily dropped evenly along the outer wall of the rotating umbrella head 31, so that the lithium powder can evenly enter each slide 32, and then the lithium powder can slide down along the slide 32 and move into the diversion hole 21, so as to finally ensure that the amount of lithium powder entering each diversion hole 21 is consistent.

[0069] Among them, the slide 32 on the above-mentioned receiving body can be a slide-shaped groove set on the outer wall of the receiving body. For example, the slide can be a V-shaped groove opened on the outer wall of the receiving body, so that the lithium powder falling on the receiving body moves down along the V-shaped groove. Of course, the slide can also be a groove of other shapes set on the receiving body, and the present disclosure does not limit this.

[0070] In some embodiments, Figure 2 As shown, the above-mentioned first driving structure 33 includes a first motor 331 and a transmission shaft 332, one end of the transmission shaft 332 is fixedly connected to the center of the second part 312 of the rotating umbrella head 31, and the other end passes through the diverter plate 2 and the receiving body, and is rotatably connected to the diverter plate 2, and the rotating shaft of the first motor 331 is transmission-connected to the transmission shaft 332.

[0071] By utilizing the configuration of the first motor 331 and the transmission shaft 332 , the rotating umbrella head 31 can be relatively stably fixed below the silo 1 , and the rotation of the rotating umbrella head 31 can be controlled by the first motor 331 , so as to control the rotation of the rotating umbrella head 31 .

[0072] The first motor 331 may be connected to the transmission shaft 332 via a transmission belt.

[0073] It should be noted that the first motor 331 can also be connected to the transmission shaft 332 through other transmission structures, for example, gears are respectively provided on the rotating shaft of the first motor 331 and the transmission shaft 332, and a chain is provided between the two gears, so that the first motor 331 drives the transmission shaft 332 to rotate. The present disclosure does not limit the manner in which the first motor 331 and the transmission shaft 332 are connected in transmission.

[0074] In some embodiments, Figure 2 and Figure 3 As shown, the lithium powder coating device further comprises a sealing cover 4 , which is fixedly disposed between the fixing seat 11 and the diverter plate 2 , so that a closed space is formed between the fixing seat 11 , the diverter plate 2 and the sealing cover 4 .

[0075] By setting the sealing cover 4, when the material bin 1 is discharged, the dust cover can be used to block the entry of dust from the outside, and at the same time, the lithium powder can be prevented from coming into contact with the air to react.

[0076] The sealing cover 4 may be made of a transparent glass plate, so that the sealing cover 4 is a transparent structure as a whole, which makes it easy for the staff to observe the falling of the lithium powder in the sealing cover 4 from the outside.

[0077] In a further embodiment, Figure 1 and Figure 2 As shown, the lithium powder coating device may further include an air injection structure 5, wherein the transmission shaft 332 is an internally hollow structure, and a vent hole is provided at the portion of the transmission shaft 332 located between the diverter plate 2 and the rotating umbrella head 31, and the air injection structure 5 is connected to one end of the transmission shaft 332 extending out of the diverter plate 2, and in addition, there is a gap between the upper end portion of the receiving body and the edge of the second portion 312 of the rotating umbrella head 31.

[0078] By setting up the gas injection structure 5, during the lithium powder coating process, the gas injection structure 5 can be used to inject gas into the transmission shaft 332, so that the inert gas enters the sealing cover 4 through the vent hole and the gap between the upper end of the receiving body and the rotating umbrella head 31, so as to exhaust the air in the sealing cover 4, and further avoid the lithium powder from reacting with the moisture in the air. In addition, during the blanking process, the inert gas can be continuously injected into the sealing cover 4 to ensure the state inside the sealing cover 4, and the inert gas injected into the sealing cover 4 can be discharged through the diverter hole 21 on the diverter plate 2.

[0079] It should be noted that the gap between the plurality of slides 32 and the edge of the second portion 312 of the rotating umbrella head 31 is relatively small, so as not to affect the lithium powder on the rotating umbrella head 31 from entering the slides 32 , while ensuring that the inert gas is injected into the sealing cover 4 through the gap.

[0080] It should also be noted that the above-mentioned inert gas can be nitrogen. In this way, after the nitrogen is discharged through the diversion hole 21, it will not cause certain pollution to the external environment.

[0081] In this embodiment, the gas injection structure 5 may include a gas injection pipeline, one end of which may be connected to the transmission shaft 332 , and the other end of which is connected to an inert gas source, so that the gas injection pipeline can be used to continuously inject inert gas into the transmission shaft 332 .

[0082] The inert gas source may be an inert gas generator or a storage tank storing inert gas. For example, if the inert gas is nitrogen, the inert gas source may be a nitrogen generator or a storage tank storing nitrogen.

[0083] It should be noted that one end of the gas injection pipeline can be connected to the transmission shaft 332 via a rotary joint, so that when the transmission shaft 332 rotates, it will not affect the injection of inert gas into the transmission shaft 332 by the gas injection pipeline.

[0084] In some embodiments, Figure 1 and Figure 2 As shown, the lithium powder coating device may further include a funnel 6 , which is fixedly connected to the discharge port of the silo 1 , wherein the first tip portion 311 of the rotating umbrella head 31 is disposed at the center of the discharge end of the funnel 6 .

[0085] By setting the funnel 6 , the lithium powder in the silo 1 first enters the funnel 6 and then continues to be discharged. In this way, the lithium powder can be discharged more easily and evenly, and the lithium powder can be better ensured to fall evenly on the outer wall of the rotating umbrella head 31 .

[0086] In this implementation, if Figure 2 As shown, a control switch 61 is also provided at the discharge end of the funnel 6 .

[0087] By using the setting of the control switch 61, the opening and closing of the discharge end of the funnel 6 can be controlled in real time as required, so that the staff can control it as required.

[0088] It should be noted that the control switch 61 can be used as long as it can control the opening and closing of the discharge end of the hopper 6. For example, the control switch 61 may include a cylinder and a baffle plate connected to the movable end of the cylinder, and the baffle plate is arranged at the discharge end of the hopper 6, so that the baffle plate can be controlled by the cylinder to close the discharge end of the hopper 6 to stop the hopper 6 from dropping materials. In addition, the control switch 61 may also be a control valve, and the control valve is connected to the discharge end of the hopper 6 to control the opening and closing of the discharge end of the hopper 6 through the control valve.

[0089] In some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, the coating structure 8 includes a coating block 81 and a pipeline stopper block 82, wherein a slide groove is provided on the coating block 81, and the pipeline stopper block 82 is fixedly provided above the coating block 81, and a plurality of through holes 821 are provided at equal intervals on the pipeline stopper block 82, and the through holes 821 are provided opposite to the slide groove. In addition, the number of the through holes 821 is consistent with the number of the diverter holes 21, and the number of the above-mentioned delivery channels 23 is consistent with the number of the through holes 821, and one end of each delivery channel 23 is respectively connected to each diverter hole 21 on the diverter plate 2, and the other end is respectively connected to the through hole 821.

[0090] By utilizing the setting of this structure, the lithium powder on the diversion hole 21 can be respectively input into the through hole 821 through the conveying channel 23, and then the lithium powder is made to fall onto the chute through the through hole 821. Since the through holes 821 are arranged at equal intervals on the pipeline limit block 82, the lithium powder falling onto the chute is relatively uniform. In this way, when the lithium powder is made to slide down through the chute for coating, it is convenient to coat the lithium powder evenly.

[0091] In this embodiment, if Figure 6 As shown, the plurality of through holes 821 are arranged in two rows at equal intervals on the pipeline limit block 82 , wherein each through hole 821 in one row is located between two adjacent through holes 821 in another row.

[0092] In this way, after each diversion hole 21 is connected to the two columns of through holes 821 respectively through the conveying channel 23, the amount of lithium powder in each diversion hole 21 is consistent, so the amount of lithium powder entering each through hole 821 is consistent, and further the amount of lithium powder falling to each position of the chute through the through holes 821 is the same, which can better make the lithium powder sliding down the chute relatively uniform.

[0093] In a further embodiment, Figure 5As shown, the above-mentioned slide groove includes a first inclined portion 811 and a second inclined portion 812. The first inclined portion 811 is arc-shaped and arranged opposite to the through hole 821, while the second inclined portion 812 is linear and connected to the first inclined portion 811. The inclination of the second inclined portion 812 is smaller than that of the first inclined portion 811.

[0094] Due to the structure of the first sloped portion 811 and the large slope of the first sloped portion 811, when the lithium powder falls from the through hole 821, it is not easy for the lithium powder to accumulate at the first sloped portion 811, so that the lithium powder can slide down quickly. Since the slope of the second sloped portion 812 is small, the speed of the lithium powder falling can be relatively slowed down, so that the lithium powder can be evenly spread for uniform coating.

[0095] like Figure 2 and Figure 4 As shown, the coating structure 8 may further include a second vibrator 83 , which is fixedly disposed on one side of the coating block 81 .

[0096] By using the second vibrator 83 , when the lithium powder falls onto the chute and moves downward, the second vibrator 83 can be turned on to make the coating block 81 vibrate relatively, so as to speed up the downward movement of the lithium powder.

[0097] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0098] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0099] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A lithium powder coating device, It is characterized in that include: Silo; A diverter plate, wherein a plurality of diverter holes are evenly distributed on the circumference of the diverter plate; A material guide assembly is arranged between the silo and the diverter plate to uniformly guide the lithium powder in the silo into each of the diverter holes. The material guide assembly includes a first driving structure and a rotating umbrella head. The rotating umbrella head is conical and includes a first tip portion and a second portion arranged relative to the first tip portion. The first tip portion is arranged facing the center of the material outlet of the silo. The rotating umbrella head is driven to rotate by the first driving structure to make the lithium powder in the silo fall uniformly along the outer wall of the rotating umbrella head. The coating structure is connected to the diverter hole on the diverter plate through a conveying channel, and is used to receive the material at the diverter hole and evenly output it for coating.

2. The lithium powder coating device according to claim 1, It is characterized in that The material guiding assembly also includes a receiving body, on which a plurality of slides are arranged, and the plurality of slides are arranged around the axis of the rotating umbrella head, one end of each of the slides is arranged corresponding to each of the diversion holes, and the other end is arranged corresponding to the edge of the second part of the rotating umbrella head, and the edges of two adjacent slides are connected to each other.

3. The lithium powder coating device according to claim 2, It is characterized in that The first driving structure comprises: First motor; A transmission shaft, one end of which is connected to the second part of the rotating umbrella head, and the other end of which passes through the splitter plate; The rotating shaft of the first motor is connected to the transmission shaft via a transmission belt.

4. The lithium powder coating device according to claim 3, It is characterized in that The lithium powder coating device also includes a sealing cover; A fixing seat for fixing the silo is arranged above the diverter plate, and the sealing cover is arranged between the fixing seat and the diverter plate, so that a closed space is formed between the fixing seat, the diverter plate and the sealing cover.

5. The lithium powder coating device according to claim 4, It is characterized in that The lithium powder coating device also includes a gas injection structure; The transmission shaft is a hollow structure, and a ventilation hole is provided at the portion of the transmission shaft located between the splitter plate and the rotating umbrella head; The gas injection structure is connected to one end of the transmission shaft extending out of the diverter plate; There is a gap between the end portion on the receiving body and the edge of the second portion of the rotating umbrella head.

6. The lithium powder coating device according to claim 2, It is characterized in that The lithium powder coating device further comprises a funnel, and the funnel is connected to the discharge port of the silo; Wherein, the first tip portion of the rotating umbrella head is arranged at the center of the discharge end of the funnel.

7. The lithium powder coating device according to claim 6, It is characterized in that A control switch is arranged at the discharge end of the funnel.

8. The lithium powder coating device according to claim 4, It is characterized in that The lithium powder coating device also includes a second driving structure; The silo is rotatably arranged on the fixed seat; The second driving structure is disposed on the fixing seat and connected to the silo to drive the silo to rotate.

9. The lithium powder coating device according to claim 8, It is characterized in that The lithium powder coating device further includes a first vibrator, which is disposed on the fixing seat.

10. The lithium powder coating device according to claim 1, It is characterized in that The coating structure comprises: A coating block, wherein a slide groove is provided on the coating block; A pipeline stop block is arranged above the coating block, and a plurality of through holes are arranged at equal intervals on the pipeline stop block, and the through holes are arranged directly opposite to the slide groove; The delivery channels are provided in plurality, and one end of the delivery pipeline is connected to the diversion hole on the diversion plate, and the other end is connected to the through hole.

11. The lithium powder coating device according to claim 10, It is characterized in that The plurality of through holes are arranged in two rows at equal intervals on the pipeline limit block, wherein each through hole in one row is located between two adjacent through holes in another row.

12. The lithium powder coating device according to claim 10, It is characterized in that The slide groove includes a first inclined portion and a second inclined portion; The first inclined portion is arc-shaped and is arranged directly opposite to the through hole; The second inclined portion is in a straight line shape and connected to the first inclined portion; Wherein, the slope of the second slope portion is smaller than the slope of the first slope portion.

13. The lithium powder coating device according to claim 10, It is characterized in that The coating structure further includes a second vibrator, which is disposed on one side of the coating block.

14. The lithium powder coating device according to claim 1, It is characterized in that The lithium powder coating device further includes a fixing bracket connected to the diverter plate.

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