Automatic tray cleaning device for lithium battery positive electrode material

Abstract

The utility model relates to an automatic tray cleaning device for a lithium battery positive electrode material. The automatic tray cleaning device for the lithium battery positive electrode material comprises a first box body, a second box body, a third box body and a power system, the first box body, the second box body and the third box body are tightly connected in the horizontal direction; two rows of rolling shafts which are parallel up and down are arranged in each box body, and a plurality of impellers and hoses are arranged on the side faces of the rolling shafts in a staggered mode; one side, protruding out of the box body, of the rolling shaft is connected with an external hose; the power system provides power to enable the rolling shaft to roll; the external hose of the first box body is connected with an external weak acid source; the second box body is connected with an external water source; the third box body is connected with an external air source, and a layer of magnet wrapping piece is wrapped outside the rolling shaft of the third box body. The automatic tray cleaning device for the lithium battery positive electrode material has the advantages of being good in tray cleaning effect, high in efficiency, high in automation degree and capable of cleaning magnetic substances carried by the tray.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion batteries, in particular to an automatic cleaning device for a tray used for lithium battery positive electrode materials. Background Art

[0002] Lithium-ion batteries are widely used in various fields due to their excellent performance, especially in recent years, with the continuous rise of new energy vehicles such as electric vehicles and plug-in hybrid vehicles. The positive electrode material is an important component of lithium-ion batteries, and its performance directly affects the performance of lithium-ion batteries. One of the important factors affecting the safety performance of lithium-ion batteries is the introduction of various metal impurities, especially magnetic foreign matter; when there are metal impurities such as iron, copper, chromium, nickel, zinc, and silver in the positive electrode material, when the voltage of the battery formation stage reaches the redox potential of these metal elements, these metals will first be oxidized at the positive electrode and then reduced at the negative electrode. When the metal single substance at the negative electrode accumulates to a certain extent, the hard edges and corners of the deposited metal will pierce the diaphragm, causing the battery to self-discharge. Self-discharge can have a fatal impact on lithium-ion batteries, so it is particularly important to prevent the introduction of impurities such as metal foreign matter from the source. In the process of transferring and storing lithium battery positive electrode materials, pallets are needed. Keeping the pallets clean is also an important way to prevent the introduction of various metal impurities, especially magnetic foreign matter. Because the pallets need to be recycled during the process, they need to be cleaned and meet the requirements before they can be used again.

[0003] Currently, the pallets are cleaned manually or by a cleaning machine. However, the cleaning process will cause certain damage to the pallets, and there is still room for improvement in automation, cleaning effect and efficiency. In addition, the current cleaning methods rarely remove magnetic foreign matter, and the cleaned pallets will still carry magnetic foreign matter. There is a risk of introducing magnetic foreign matter during the use or transfer of positive electrode materials. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an automatic cleaning device for a tray used for lithium battery positive electrode materials.

[0005] An automatic cleaning device for a tray of lithium battery positive electrode materials comprises a first box, a second box, a third box and a power system; the first box, the second box and the third box are closely connected in the horizontal direction; the boxes each contain a plurality of rollers in two vertically parallel rows, and the sides of the rollers are staggered with a plurality of impellers and hoses; the side of the roller protruding from the box is connected to an external hose; the power system provides power to make the roller roll; the external hose of the first box is connected to an external weak acid source; the second box is connected to an external water source; the third box is connected to an external air source, and the roller of the third box is wrapped with a layer of magnet sheet.

[0006] The automatic cleaning device for lithium battery positive electrode material trays described in the utility model has good cleaning effect, high efficiency and high automation for the trays, avoids damage to the trays during the cleaning process, and can also clean the magnetic substances carried by the trays, effectively avoiding the introduction of magnetic foreign matter into the materials during the use of the trays, thereby improving the safety performance of the materials.

[0007] Furthermore, the roller is made of plastic, and the impeller and the hose are made of elastic plastic.

[0008] Furthermore, the hose has a group of tube holes.

[0009] Furthermore, a soft brush is arranged around the hose hole of the second box.

[0010] Furthermore, the external acid source is a high-pressure weak acid source, the external water source is a high-pressure water source, and the external gas source is a high-pressure gas source. When the high-pressure medium source passes through, the elastic plastic hose is whipped to various parts of the tray and sprays the medium thoroughly through the tube hole group.

[0011] Furthermore, an organic seal is provided at the connection between the external hose and the roller to seal the internal medium to prevent leakage.

[0012] Furthermore, a roller slot is provided on the side of the box body for placing the roller on the upper part of the box body, and a roller movable part is provided at the connection between the roller on the upper part of the box body and the roller slot for adjusting the height of the roller on the upper part of the box body. The roller is adjusted according to the height of the pallet to clamp the pallet.

[0013] Furthermore, the power system includes a transmission gear, an external motor, a motor rotating gear, a driven gear and a chain; the transmission gear is fixedly arranged on the side where the plastic roller is connected to the external hose and is located outside the box. The chain is meshed with the motor rotating gear, the driven gear and the transmission gear on the plastic roller in the same row in a box to form a chain drive. The rolling power of the roller is input through the external motor and the chain drive.

[0014] Furthermore, it also includes a pallet loading platform and a pallet unloading platform; the pallet loading platform is arranged in front of the first box body, and the pallet is transported into the first box body through the pallet loading platform; the pallet unloading platform is arranged behind the third box body, and the pallet is transported from the third box body to the pallet unloading platform.

[0015] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the first box of the automatic cleaning device for lithium battery positive electrode material trays;

[0017] Figure 2 This is a structural diagram of the second box of the automatic cleaning device for lithium battery positive electrode material trays;

[0018] Figure 3 This is a structural diagram of the third box of the automatic cleaning device for lithium battery positive electrode materials tray;

[0019] Figure 4 This is the overall structure diagram of the automatic cleaning device for trays used for lithium battery positive electrode materials. DETAILED DESCRIPTION

[0020] Please also see Figure 1-4 The automatic cleaning device for lithium battery positive electrode material tray comprises a first box body 10, a second box body 20, a third box body 30 and a power system 40. The first box body 10, the second box body 20 and the third box body 30 are sequentially connected and arranged in a horizontal direction.

[0021] The structures of the first box 10, the second box 20 and the third box 30 are basically the same, and all include a plurality of plastic rollers 11, elastic plastic impellers 12, elastic plastic hoses 13, external hoses 14, mechanical seals 15, roller slots 16, and roller movable parts 17. In this embodiment, the plastic rollers 11 penetrate the first box 10, the second box 20 or the third box 30 and are arranged in two rows parallel to each other in the first box 10, the second box 20 or the third box 30, and the elastic plastic impellers 12 and the elastic plastic hoses 13 are alternately arranged radially on the side of the plastic rollers 11. The elastic plastic impeller 12 can compress and deform itself in contact with the pallet, and can also press the pallet, and drive the pallet to move when the plastic roller 11 rotates. The elastic effect will not cause damage to the pallet; during the pallet transportation process, the elastic plastic hose 13 can be irregularly whipped around when the high-pressure medium passes through, so as to be whipped to various parts of the pallet; the elastic plastic hose 13 is provided with a tube hole group formed by a plurality of tube holes 18, which is used to spray the medium to various parts of the pallet for thorough spraying. The plastic roller 11 is connected to an external hose 14 at one end outside the first box 10, the second box 20 or the third box 30, and the external hose 14 is used to connect to an external medium source. A mechanical seal 15 is provided at the connection between the external hose 14 and the plastic roller 11 to seal the internal medium to prevent leakage. A roller slot 16 is provided on the side of the first box body 10, the second box body 20 or the third box body 30, and the plastic roller 11 located at the top of the first box body 10, the second box body 20 or the third box body 30 is placed in the roller slot 14. A roller movable part 17 is provided at the contact point between the plastic roller 11 at the top of the box body and the roller slot 14, which is used to adjust the upper and lower positions of the plastic roller 11 at the top of the box body, and adjust it to a suitable height according to the height of the pallet to clamp the pallet.

[0022] The external hose 14 of the first box 10 is used to connect to an external high-pressure weak acid source, and spray the acid onto the tray through the tube holes 18 on the elastic plastic hose 13 to perform soft pickling.

[0023] The external hose 14 of the second box body 20 is used to connect to an external high-pressure water source, and spray the water on the tray through the tube hole 18 on the elastic plastic hose 13 for washing; and a soft brush 21 is arranged around the tube hole 18 on the elastic plastic hose 13 in the second box body 20, and brushing is performed when the elastic plastic hose 13 is whisked.

[0024] The external hose 14 of the third box body 30 is used to connect to an external high-pressure air source, which is sprayed on the tray through the tube hole 18 on the elastic plastic hose 13 for blowing and drying; and the plastic roller 11 in the third box body 30 is wrapped with a layer of magnetic sheet 31, and the magnetic sheet 31 can absorb the trace magnetic dust blown off the tray.

[0025] The power system 40 includes a transmission gear 41, an external motor 42, a motor rotating gear 43, a driven gear 44 and a chain 45. The transmission gear 41 is fixedly arranged at one end of the plastic roller 11 connected to the external hose 16, and is located outside the box. The chain 45 is meshed with the motor rotating gear 43, the driven gear 44 and the transmission gear 41 on the plastic rollers 11 in the same row in a box to form a chain drive. That is, two motors provide power transmission for the plastic rollers 11 in the upper and lower rows in one box.

[0026] Furthermore, the device also includes a tray loading platform 51 and a tray unloading platform 52. The tray loading platform 51 is arranged in front of the first box 10. When in use, the tray is placed on the tray loading platform 51 and moved into the first box 10; the tray unloading platform 52 is arranged behind the third box 30, and the tray is transported to the tray unloading platform after cleaning.

[0027] During operation, firstly, the external motor 42 starts to rotate, and the motor transmission gear 43 rotates accordingly, and the plastic roller 11 starts to rotate through the chain drive. Then the pallet is placed on the tray loading platform 51 and moved into the first box body 10. The elastic plastic impeller between the upper and lower plastic rollers 11 inside the first box body 10 presses the pallet tightly, and drives the pallet to move when the plastic roller rotates; the external high-pressure weak acid source connected to the external hose 14 of the first box body 10 is sprayed on the pallet through the tube hole group on the elastic plastic hose 13. During the pallet transportation process, the high-pressure weak acid is sprayed out through the tube hole group on the elastic plastic hose 13. Under the action of high pressure, the elastic plastic hose 13 swings irregularly around, spraying weak acid water to various parts of the pallet for weak acid washing. Under the action of the rotation of the plastic roller 11, the pallet is transported from the first box body 10 to the inside of the second box body 20, and the second box body 20 also uses the elastic plastic impeller 12 to compress and transport the pallet; the external hose 14 of the second box body 20 is connected to the external high-pressure water source and sprays it on the pallet through the tube hole group on the elastic plastic hose 13. During the pallet transportation process, the high-pressure water is sprayed out through the tube hole group on the elastic plastic hose. Under the action of high pressure, the elastic plastic hose 13 swings irregularly around, spraying water to various parts of the pallet for washing; at the same time, the brush 21 on the elastic plastic hose 13 brushes various parts of the pallet under the action of irregular swinging around. Under the action of the rotation of the plastic roller 11, the pallet is transported from the second box 20 to the inside of the third box 30. The third box 30 also uses the elastic plastic impeller 12 to compress and transport the pallet; the external hose 14 of the third box 30 is connected to the external high-pressure gas source and sprayed on the pallet through the tube hole group on the elastic plastic hose 13. During the pallet transportation process, the high-pressure gas is sprayed out through the tube hole group on the hose. Under the action of high pressure, the elastic plastic hose 13 swings irregularly around and sprays the gas to various parts of the pallet for blowing and drying; at the same time, the magnetic package on the plastic roller 11 absorbs the trace magnetic dust swept from the pallet under the action of its own magnetic force, and the remaining non-magnetic dust is blown away by the high-pressure gas. Under the action of the rotation of the plastic roller 11, the pallet is transported from the third box 30 to the tray-out platform to complete the cleaning.

[0028] The utility model uses three boxes with different functions for continuous cleaning, thereby improving the cleaning rate of dirt such as oil, dust, magnetic dust, etc. on the pallet; through the power transmission of the external motor 42, the rotation of the plastic roller 11 simultaneously realizes the transportation and rotation cleaning of the pallet, thereby improving the utilization rate of the motor kinetic energy; the elastic plastic hose 13 whisks in all directions when the high-pressure medium passes through, and sprays thoroughly; at the same time, the tube hole group plus the brush 21 sprays and scrubs at the same time, with good cleaning effect and high efficiency; the main structures inside the box that contact the pallet are all made of plastic material, which reduces damage to the pallet caused by friction or extrusion, and at the same time can prevent foreign matter generated by friction between metal parts during the cleaning process from being introduced into the pallet.

[0029] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. An automatic cleaning device for a tray for lithium battery positive electrode materials, characterized in that: It includes a first box body and a power system; the first box body contains two rows of rollers arranged in parallel up and down, the rollers penetrate the first box body, and the sides thereof are provided with a plurality of impellers and hoses arranged radially and staggeredly, and the hoses are provided with a group of tube holes; the end of the roller protruding from the box body is connected to an external hose; the power system provides power to make the rollers roll; the external hose of the first box body is used to connect to an external cleaning medium.

2. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 1, characterized in that: The roller is made of plastic, and the impeller and the hose are made of elastic plastic.

3. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 2, characterized in that: An organic seal is provided at the connection between the external hose and the roller to prevent leakage of the internal medium.

4. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 3, characterized in that: A roller slot is provided on the side of the first box body for placing the roller inside the box body, and a roller movable part is provided at the connection between the roller inside the box body and the roller slot for adjusting the height of the roller above the inside of the box body.

5. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 4, characterized in that: The power system includes a transmission gear, an external motor, a motor rotating gear, a driven gear and a chain; the transmission gear is fixedly arranged on the side of the plastic roller connected to the external hose and is located outside the box; the chain is meshed with the motor rotating gear, the driven gear and the transmission gear on the plastic roller in the same row in a box to form a chain drive.

6. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 5, characterized in that: It also includes a second box and a third box which are connected to the first box in sequence. The second box and the third box have the same internal structure as the first box. The first box is used to connect to an external high-pressure weak acid source, the second box is used to connect to an external water source as a high-pressure water source, and the third box is used to connect to an external gas source as a high-pressure gas source.

7. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 6, characterized in that: The roller of the third box body is wrapped with a layer of magnet sheet.

8. The automatic cleaning device for a tray for lithium battery positive electrode materials according to claim 7, characterized in that: A soft brush is arranged around the hose hole of the second box.

9. An automatic cleaning device for a tray for lithium battery positive electrode materials according to any one of claims 6 to 8, characterized in that: It also includes a tray loading platform and a tray unloading platform; the tray loading platform is arranged in front of the first box body for placing trays; the tray unloading platform is arranged behind the third box body for receiving the cleaned trays.

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