CN219923529U - Coating slurry receiving device for lithium battery and recycling system - Google Patents
Coating slurry receiving device for lithium battery and recycling system Download PDFInfo
- Publication number
- CN219923529U CN219923529U CN202321179605.2U CN202321179605U CN219923529U CN 219923529 U CN219923529 U CN 219923529U CN 202321179605 U CN202321179605 U CN 202321179605U CN 219923529 U CN219923529 U CN 219923529U
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- slurry
- receiving device
- coating
- spraying
- side plate
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 41
- 238000004064 recycling Methods 0.000 title claims abstract description 30
- 239000006255 coating slurry Substances 0.000 title claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 49
- 230000001680 brushing effect Effects 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 70
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 239000011888 foil Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a coating slurry receiving device for a lithium battery and a recycling system, comprising a receiving groove, wherein the receiving groove comprises a bottom plate and a side plate; the side plates are obliquely arranged around the bottom plate; a discharge hole is formed in the bottom plate; the inner wall of at least one side plate is provided with a spraying device and a brushing device, and the position of the spraying device on the side plate is higher than the brushing device; the spraying device is used for flushing the slurry attached to the inner wall of the side plate; the brushing device is used for cleaning the slurry attached to the inner wall of the side plate; the material receiving device can timely and effectively remove the slurry attached to the side plate, so that the slurry can be timely recovered; the coating slurry receiving device for the lithium battery is simple in structure, convenient to use and suitable for recycling the coating slurry for the lithium battery on a large scale.
Description
Technical Field
The utility model relates to the technical field of lithium battery manufacturing, in particular to the field of lithium battery pole piece slurry coating equipment, and particularly relates to a coating slurry receiving device for a lithium battery and a recycling system.
Background
The pole piece coating process is a core process for manufacturing the pole piece, slurry is conveyed into a die cavity of a coating machine from a storage tank through a screw pump during coating, then guided by a gasket in the die cavity, flows out of a die lip of the coating machine and is coated on a foil, and the pole piece is manufactured into the pole piece through a subsequent process. According to the operation rules, before each coating of the pole piece by using the coater, the die head of the coater needs to be checked and a discharge test is carried out to check whether the lip discharge of the coater is normal or not. However, most of the slurry discharged in the discharge test is directly discharged into the slurry recovery tank to be scrapped, so that a great amount of waste is caused every day, and the slurry discharged in the discharge test is recovered and utilized, thereby having great significance in reducing waste and saving cost.
In the prior art, related researches and applications of a coating slurry recycling device for batteries have been carried out, such as a novel transfer coater with recyclable slurry in chinese patent publication No. CN 212759380U; chinese patent publication No. CN210700938U pole piece slurry recycling device and pole piece extrusion coating device. However, most of the existing slurry recovery devices are used for recovering the drip slurry in the coating process, and a cleaning device and an anti-splashing design are not specifically designed on the recovery device, so that the existing slurry recovery devices cannot effectively prevent the slurry from adhering to the device and splashing to foil and a passing roller, and further the problems of slurry solidification failure, difficult reutilization, dark spots and scrapping of the pole pieces and high defect rate of the pole pieces are caused; meanwhile, the recovered slurry is not subjected to timely and targeted impurity removal treatment, so that the recovered slurry cannot be recycled on line, and the recovery utilization rate of the slurry is low.
Disclosure of Invention
The utility model aims at: aiming at the defects of the existing slurry recovery device, the coating slurry receiving device for the lithium battery and the recycling system are provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the coating slurry receiving device for the lithium battery comprises a receiving groove, wherein the receiving groove comprises a bottom plate and a side plate; the side plates are obliquely arranged around the bottom plate; a discharge hole is formed in the bottom plate; at least one of the inner walls of the side plates is provided with a spraying device and a brushing device, and the position of the spraying device on the side plate is higher than that of the brushing device.
According to the coating slurry receiving device for the lithium battery, disclosed by the utility model, the side plates of the receiving trough are obliquely arranged, so that the opening area of the receiving trough is larger, and slurry discharged from the lip can be better collected, so that the slurry is effectively prevented from splashing on the foil and the passing roller; meanwhile, the spraying device and the brushing device are further arranged on the inner wall of the side plate of the receiving groove, so that the slurry attached to the side plate can be timely and effectively removed, the slurry can be timely recovered, the slurry curing failure is avoided, the favorable condition is created for the online recycling of the slurry, and the coating slurry receiving device for the lithium battery is simple in structure, convenient to use and suitable for being applied to recycling of the coating slurry for the lithium battery on a large scale.
Preferably, the inclination angle of the side plate is (the included angle between the side plate and the vertical plane) (alpha) 25-45 degrees; the opening area of the receiving groove is larger, and slurry discharged from the lip can be better collected, so that the slurry is effectively prevented from splashing on the foil and the passing roller.
Preferably, the bottom plate is obliquely arranged towards the direction of the discharge hole; most preferably, the inclination angle (beta) of the bottom plate of the receiving groove (the included angle between the bottom plate and the vertical plane) is 30-60 degrees; the preferable arrangement mode of the bottom plate of the receiving groove can automatically collect the slurry at the discharge hole, so that the slurry in the receiving groove can be conveniently discharged.
Preferably, the inner side of the side plate, which is close to the lip of the die head of the coating machine, of the material receiving groove is provided with a spraying device and a brushing device.
Preferably, the spraying device and the brushing device are arranged in parallel.
Wherein the spraying device is used for flushing slurry attached to the inner wall of the side plate; preferably, the spraying device comprises a spraying pipe and a spraying port, wherein the spraying port is arranged on the spraying pipe, and the spraying pipe and the side plate of the receiving groove are arranged in parallel; the spraying device is used for cleaning slurry attached to the inner side wall.
The brushing device is used for cleaning slurry attached to the inner wall of the side plate; preferably, the brushing device comprises a supporting rod and a brushing head; the supporting rod is arranged on the receiving groove side plate; the brush head is slidably mounted on the support rod.
Preferably, the brushing device is an electric brushing device.
In order to achieve the above purpose, the utility model further provides a coating slurry recycling system for a lithium battery, which comprises a receiving device, a first stirring tank, a first filter, a demagnetizer, a second stirring tank, a second filter and a raw material tank which are connected in sequence through pipelines; according to the coating slurry recycling system for the lithium battery, targeted stirring and blending and impurity removal treatment are carried out on the slurry received by the material receiving device, so that the slurry received by the material receiving device can be directly used for coating the pole piece, the online recycling of the slurry is realized, and the recycling rate of the slurry is higher.
The material receiving device is used for collecting the slurry discharged from the lip of the coating machine and preventing the slurry from splashing, and the collected slurry is led into the first stirring tank.
The inner wall of the first stirring tank is provided with an interlayer for heating or cooling the slurry by introducing cold water and hot water; the first agitation tank is used for dispersing the slurry, and pure water and other solvents can be added.
Wherein the first filter is a rotary filter; the impurities in the slurry can be preliminarily filtered through the first filter.
Wherein the demagnetizer is a magnet filter; is used for removing metal impurities in the slurry, and avoids the problems of internal short and poor K value of the battery.
The inner wall of the second stirring tank is provided with an interlayer for heating or cooling the slurry by introducing cold water and hot water; the second stirring tank is used for adjusting the viscosity and the solid content of the slurry, and pure water and other solvents can be added.
Wherein the mesh number of the filtering device in the second filter is not less than 200 meshes; the second filter is used for filtering and removing the solidified slurry with large particles, so that scratches on the metal foil during coating are avoided, and the electrode quality is affected.
Wherein the raw material tank is a container for storing coating slurry; and (3) guiding the recovered slurry into a raw material tank for coating, so as to realize recycling of the recovered slurry.
Preferably, a plurality of valves are arranged among the components of the coating slurry recycling system for the lithium battery; the slurry in the system can be conveyed and controlled through the valve.
Preferably, the coating slurry recycling system for the lithium battery further comprises a plurality of slurry pumps; the slurry pump provides power for the transportation of slurry in the system, and the recycling of the slurry is completed.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. according to the coating slurry receiving device for the lithium battery, through the inclined arrangement of the side plates of the receiving groove, the opening area of the receiving groove is larger, and slurry discharged from the lip can be better collected, so that the slurry is effectively prevented from splashing on the foil and the passing roller.
2. According to the coating slurry receiving device for the lithium battery, the spraying device and the brushing device are arranged on the inner wall of the side plate of the receiving groove, so that slurry attached to the side plate can be timely and effectively removed, the slurry can be timely recovered, the slurry solidification failure is avoided, and an advantage is created for the online recycling of the slurry.
3. The coating paste receiving device for the lithium battery has a simple structure, is convenient to use, and is suitable for recycling the coating paste for the lithium battery on a large scale.
4. According to the coating slurry recycling system for the lithium battery, the slurry received by the material receiving device is subjected to targeted stirring allocation and impurity removal treatment, so that the slurry received by the material receiving device can be directly used for coating the pole piece, the online recycling of the slurry is realized, and the recycling rate of the slurry is higher.
Drawings
Fig. 1 is a plan view of a coating paste receiving device for a lithium battery in example 1 of the present utility model;
fig. 2 is a sectional view of a coating paste receiving device for a lithium battery in example 1 of the present utility model;
fig. 3 is a side view of a coating paste receiving device for a lithium battery in example 1 of the present utility model;
fig. 4 is a schematic view of a coating paste recycling system for lithium batteries in example 1 of the present utility model;
the marks in the figure: 1-receiving a trough; 101-a bottom plate; 102-side plates; 2-a discharge hole; 3-spraying device; 301-spraying holes; 302-a shower; 4-brushing device; 401-supporting rods; 402-brush head; 5-a receiving device; 6-a first stirring tank; 7-a first filter; 8-a demagnetizer; 9-a second stirring tank; 10-a second filter; 11-a raw material tank; 12-slurry pump.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
The coating slurry receiving device (figures 1, 2 and 3) for the lithium battery comprises a receiving groove 1, wherein the receiving groove 1 consists of a bottom plate 101 and a side plate 102, the side plate 102 is obliquely arranged around the bottom plate 101, and the inclination angle alpha of the side plate 102 is 30 degrees; a bottom plate 101 of the receiving trough 1 is provided with a discharge hole 2; the inner walls of the 2 long side plates 102 of the receiving groove 1 are simultaneously provided with a spraying device 3 and a brushing device 4, and the position of the spraying device 3 on the inner wall of the side plate 102 is higher than that of the brushing device 4; the spraying device 3 is used for spraying and airing liquid on the inner wall of the side plate 102 of the receiving chute 1; the brushing device 4 is used for cleaning the slurry adhered to the inner wall of the side plate 102; the bottom plate 101 is obliquely arranged towards the direction of the discharge hole 2; the inclination angle beta of the bottom plate of the receiving groove is 30 degrees; the spraying device 3 is arranged in parallel with the brushing device 4; the spraying device 3 consists of a spraying pipe 302 and a spraying port 301, the spraying port 301 is arranged on the spraying pipe 302, and the spraying pipe 302 and the side plate 102 of the receiving groove 1 are arranged in parallel; the brushing device 4 consists of a supporting rod 401 and a brushing head 402; the support bar 401 is arranged on the side plate 102 of the receiving chute 1; the brush head 401 is slidably mounted on the support rod 401; the brushing device 4 is an automatic brushing device.
Example 2
The coating slurry receiving device for the lithium battery comprises a receiving groove 1, wherein the receiving groove 1 comprises a bottom plate 101 and a side plate 102; the side plates 102 are obliquely arranged around the bottom plate 101, and the inclination angle alpha of the side plates 102 is 25 degrees; a bottom plate 101 of the receiving trough 1 is provided with a discharge hole 2; the inner wall of the long side plate 102 of the receiving groove 1, which is close to the die head, is simultaneously provided with a spraying device 3 and a brushing device 4, and the position of the spraying device 3 on the inner wall of the side plate 102 is higher than that of the brushing device 4; the spraying device 3 is used for spraying and airing liquid on the inner wall of the side plate 102 of the receiving chute 1; the brushing device 4 is used for cleaning the slurry adhered to the inner wall of the side plate 102; the bottom plate 101 is obliquely arranged towards the direction of the discharge hole 2; the inclination angle beta of the bottom plate of the receiving groove is 40 degrees; the spraying device 3 consists of a spraying pipe 302 and a spraying port 301, the spraying port 301 is arranged on the spraying pipe 302, and the spraying pipe 302 and the side plate 102 of the receiving groove 1 are arranged in parallel; the brushing device 4 consists of a supporting rod 401 and a brushing head 402; the support bar 401 is arranged on the side plate 102 of the receiving chute 1; the brush head 401 is slidably mounted on the support rod 401, and the brushing device 4 is a manual control brushing device.
Example 3
A coating slurry recycling system (figure 4) for a lithium battery, which consists of a receiving device 5 (embodiment 1), a first stirring tank 6, a first filter 7, a demagnetizer 8, a second stirring tank 9, a second filter 10, a raw material tank 11 and a slurry pump 12 which are connected in sequence through pipelines;
the inner walls of the first stirring tank 6 and the second stirring tank 9 are respectively provided with an interlayer, and cold water and hot water can be introduced to heat or cool the slurry; the first filter 7 is a rotary filter; the demagnetizer 8 is a magnet filter; the mesh number of the filter plugs of the second filter 10 is 200 mesh; the raw material tank 11 is a container for storing a coating paste.
Example 4
A coating slurry recycling system for lithium batteries consists of a receiving device 5 (embodiment 2), a first stirring tank 6, a first filter 7, a demagnetizer 8, a second stirring tank 9, a second filter 10, a raw material tank 11 and a slurry pump 12 which are connected in sequence through pipelines;
the inner walls of the first stirring tank 6 and the second stirring tank 9 are respectively provided with an interlayer, and cold water and hot water can be introduced to heat or cool the slurry; the first filter 7 is a rotary filter; the demagnetizer 8 is a magnet filter; the filter plug mesh number of the second filter 10 is 400 mesh; the raw material tank 11 is a container for storing a coating paste.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The coating slurry receiving device for the lithium battery comprises a receiving groove (1), wherein the receiving groove comprises a bottom plate (101) and side plates (102); characterized in that the side plates (102) are arranged obliquely around the bottom plate (101); a discharge hole (2) is formed in the bottom plate (101); at least one inner wall of the side plate (102) is provided with a spraying device (3) and a brushing device (4), and the position of the spraying device (3) on the side plate (102) is higher than the brushing device (4).
2. The coating paste receiving device for lithium batteries according to claim 1, wherein the side plates (102) have an inclination angle of 25-45 °.
3. The coating paste receiving device for lithium batteries according to claim 1, wherein the bottom plate (101) is inclined toward the direction of the discharge port (2), and the inclination angle of the bottom plate (101) is 30-60 °.
4. The coating paste receiving device for lithium batteries according to claim 1, wherein the spraying device (3) comprises a spraying pipe (302) and a spraying opening (301), the spraying opening (301) is arranged on the spraying pipe (302), and the spraying pipe (302) and the side plate (102) are arranged in parallel.
5. The coating paste receiving device for a lithium battery according to claim 1, wherein the brushing device (4) comprises a support rod (401) and a brush head (402); the support rod (401) is arranged on the side plate (102); the brush head (402) is slidably mounted on the support rod (401).
6. The coating paste receiving device for lithium batteries according to any one of claims 1 to 5, wherein the spraying device (3) is arranged in parallel with the brushing device (4).
7. The coating slurry recycling system for the lithium battery is characterized by comprising a receiving device (5), a first stirring tank (6), a first filter (7), a demagnetizer (8), a second stirring tank (9), a second filter (10) and a raw material tank (11) which are connected in sequence through pipelines; the material receiving device (5) is a coating slurry receiving device for a lithium battery according to any one of claims 1 to 6.
8. The coating paste recycling system for lithium batteries according to claim 7, wherein an interlayer is designed on the inner wall of the first stirring tank (6) and/or the second stirring tank (9) for heating or cooling the paste by introducing cold water and hot water.
9. The coating paste recycling system for lithium batteries according to claim 7, wherein the first filter (7) is a rotary filter, and the number of the filter means in the second filter (10) is not less than 200 mesh.
10. The coating paste recycling system for lithium batteries according to claim 7, further comprising a plurality of paste pumps (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179605.2U CN219923529U (en) | 2023-05-16 | 2023-05-16 | Coating slurry receiving device for lithium battery and recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179605.2U CN219923529U (en) | 2023-05-16 | 2023-05-16 | Coating slurry receiving device for lithium battery and recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219923529U true CN219923529U (en) | 2023-10-31 |
Family
ID=88502485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321179605.2U Active CN219923529U (en) | 2023-05-16 | 2023-05-16 | Coating slurry receiving device for lithium battery and recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219923529U (en) |
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2023
- 2023-05-16 CN CN202321179605.2U patent/CN219923529U/en active Active
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| GR01 | Patent grant |