CN220658173U - Lithium ion battery coating paste pressure stabilizing device and system - Google Patents
Lithium ion battery coating paste pressure stabilizing device and system Download PDFInfo
- Publication number
- CN220658173U CN220658173U CN202321735792.8U CN202321735792U CN220658173U CN 220658173 U CN220658173 U CN 220658173U CN 202321735792 U CN202321735792 U CN 202321735792U CN 220658173 U CN220658173 U CN 220658173U
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- Prior art keywords
- pressure stabilizing
- pressure
- cavity
- screw pump
- lithium ion
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 67
- 238000000576 coating method Methods 0.000 title claims abstract description 24
- 239000011248 coating agent Substances 0.000 title claims abstract description 23
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 17
- 230000006641 stabilisation Effects 0.000 claims abstract description 22
- 238000011105 stabilization Methods 0.000 claims abstract description 22
- 239000006255 coating slurry Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 description 33
- 239000012530 fluid Substances 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 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)
- Coating Apparatus (AREA)
Abstract
The utility model belongs to the technical field of lithium ion battery coating, and particularly relates to a lithium ion battery coating slurry pressure stabilizing device and system. The device comprises a pressure stabilizing tank, wherein the pressure stabilizing tank is used for being installed between a screw pump and a high-efficiency filter, a cavity is formed in the pressure stabilizing tank, and the inner diameter of the cavity is not smaller than 5 times of the diameter of a discharge hole of the screw pump. In the technical scheme of this application, provide a pressure stabilization device for setting up in coating slurry system, the cavity internal diameter of device is great in the internal diameter of screw pump relatively, after the thick liquids pump out from the screw pump enters into the pressure stabilization jar, because of the internal diameter grow, makes the pulse reduce, has reduced pressure fluctuation to a certain extent.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery coating, and particularly relates to a lithium ion battery coating slurry pressure stabilizing device and system.
Background
With the strong support of the country to new energy industry, new energy automobiles have become a main trend of future development, and the demands of power batteries are increasing. Because the automobile power battery pack is formed into an energy storage system through the serial-parallel connection of lithium ion batteries, the consistency of the batteries directly determines the quantity of the stored energy of the battery pack system.
The coating process in the lithium ion battery production process directly determines the consistency of the battery. In order to improve the coating consistency, a high-precision screw pump and a spraying die head are adopted in the industry. The surface density fluctuation of +/-1.0% can be realized according to the prior optimal precision configuration, but the surface density precision of +/-0.5% can not be still achieved. Mainly for two reasons: 1) The rotation of the screw pump still has periodic pressure fluctuation, and the periodic fluctuation of the slurry pressure leads to the fluctuation of the surface density to be more than +/-1.0%; 2) The high-precision die head can improve the consistency of coating, but the slurry is a Newton fluid, and gel increases the viscosity after the slurry stays in a conveying pipeline and a tank body, so that the pressure distribution of the slurry in the die head die cavity is uneven, and the consistency of the coating surface density is poor.
In order to solve the problem of slurry pressure fluctuation caused by a coating screw pump, a current stabilizer is used by some enterprises in the industry. The working principle of the current stabilizer is as follows: the slurry flows through the inner wavy soft silica gel pipeline to reduce the pressure fluctuation of the slurry. This solution can improve the periodic pressure fluctuation of the screw pump, but cannot solve the viscosity difference of the slurry caused by the gel.
Disclosure of Invention
The utility model aims at: aiming at the technical defects of the prior art that the periodic pressure fluctuation of the screw pump caused by the self-characteristics of the slurry further causes poor coating consistency of the lithium ion battery. A lithium ion battery coating paste pressure stabilizing device and system are provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a lithium ion battery coating slurry pressure stabilization device, includes the pressure stabilization jar, the pressure stabilization jar is installed between screw pump and high-efficient filter, the inside cavity that is equipped with of pressure stabilization jar, the internal diameter of cavity is greater than screw pump discharge gate pipe diameter.
In the technical scheme of this application, provide a pressure stabilization device for setting up in coating slurry system, the cavity internal diameter of device is great in the internal diameter of screw pump relatively, after the thick liquids pump out from the screw pump enters into the pressure stabilization jar, because of the internal diameter grow, makes the pulse reduce, has reduced pressure fluctuation to a certain extent.
As a preferable scheme of the utility model, the side wall of the pressure stabilizing tank is provided with an inlet pipeline, the bottom of the pressure stabilizing tank is provided with an outlet pipeline, and the inner diameters of the inlet pipeline and the outlet pipeline are not more than 1/5-1/10 of the inner diameter of the cavity.
As a preferable scheme of the utility model, a first quick-connection interface is arranged between the inlet pipeline and the pressure stabilizing tank; and a second quick-connection interface is arranged between the outlet pipeline and the pressure stabilizing tank.
As a preferred embodiment of the present utility model, the outlet pipe is provided with a first ball valve.
As a preferable scheme of the utility model, at least one layer of grid plate is horizontally arranged in the cavity, a plurality of meshes are formed on the grid plate and used for passing slurry, the slurry is a Newton fluid, and when the slurry passes through the grid plate, the slurry is sheared and thinned after passing through the grid plate, so that the viscosity of the slurry is greatly reduced, and when the slurry enters a die head, the slurry has better consistency, thereby improving the coating consistency.
Preferably, the grid plate is detachably connected with the inner wall of the cavity, protrusions for supporting the grid plate are arranged in the cavity, and a plurality of protrusions are circumferentially arranged on the inner wall of the cavity at the same horizontal height at intervals.
As a preferable scheme of the utility model, the top of the pressure stabilizing tank is provided with a top cover, the top cover is provided with a quick connection clamp, and the top cover and the pressure stabilizing tank are fixed through the quick connection clamp.
As a preferable scheme of the utility model, the top cover is provided with an exhaust pipe orifice, and the exhaust pipe orifice is provided with an exhaust valve.
The lithium ion battery coating slurry pressure stabilizing system comprises at least one pressure stabilizing device, wherein an inlet pipeline of the pressure stabilizing device is connected with a discharge hole of a screw pump, and an outlet pipeline of the pressure stabilizing device is connected with a feed hole of a high-efficiency filter.
As a preferred embodiment of the present utility model, the pressure stabilizing system includes at least two pressure stabilizing devices, and the pressure stabilizing devices disposed adjacently are connected in series in the battery coating paste pressure stabilizing system.
When the slurry comes out of the screw pump, a certain pressure pulse exists, one or more stages of pressure stabilizing devices are added behind the screw pump to be used in series, and the large cavity of the pressure stabilizing device enables the slurry pressure pulse to be obviously weakened after entering the large cavity. And the ideal gas state equation PV=nRT of the reference gas, the mass of n materials, the R constant and the T are the temperature, and the temperature is unchanged during coating, so that the P (pressure) is inversely proportional to the V (volume), the volume of the cavity is increased, and the corresponding pressure fluctuation is reduced.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
the utility model provides a coating slurry pressure stabilizing device, wherein the inner diameter of a cavity of the device is larger than that of a screw pump, and when slurry is pumped out of the screw pump and enters a pressure stabilizing tank, pressure pulses are reduced due to the increase of the inner diameter, so that pressure fluctuation is reduced to a certain extent. Be provided with multistage stainless steel mesh plate in the cavity of pressure stabilizing jar, the net hole on it can play the shearing effect to the coating thick liquids for the viscosity of thick liquids reduces, improves the viscosity uniformity, corresponds the setting of the reducing cavity that sets up to the screw pump, and both mutually support and realize promoting the uniformity of coating jointly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the mesh plate of the present utility model;
FIG. 3 is a schematic diagram of a pressure stabilization tank of the present utility model from a top view;
FIG. 4 is a schematic view showing the structure of a pressure stabilizing system in example 2;
FIG. 5 is a schematic view showing the structure of a pressure stabilizing system in embodiment 3;
icon: 100-pressure stabilization device; 1-a pressure stabilizing tank; 2-cavity; 3-inlet piping; 4-outlet piping; 5-a first quick connect interface; 6-a second quick connect interface; 7-a first ball valve; 8-grid plates; 9-bulge; 10-top cover; 11-quick connection clamp; 12-an exhaust nozzle; 13-an exhaust valve; 14-screw pump; 15-high efficiency filter feed inlet.
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 embodiment discloses a lithium ion battery coating paste pressure stabilization device 100, as shown in fig. 1-3, including pressure stabilization tank 1, pressure stabilization tank 1 installs between screw pump 14 and high-efficient filter, pressure stabilization tank 1 inside is equipped with cavity 2, the internal diameter of cavity 2 is greater than 5 times of screw pump 14 discharge gate pipe diameter. The inner diameter of the cavity 2 passing through the device is larger than that of the screw pump 14, and when slurry is pumped out of the screw pump 14 and enters the pressure stabilizing tank 1, the inner diameter is enlarged, so that the pulse is reduced, and the pressure fluctuation is reduced to a certain extent.
Specifically, the side wall of the pressure stabilizing tank 1 is provided with an inlet pipeline 3, the bottom of the pressure stabilizing tank 1 is provided with an outlet pipeline 4, and the inner diameters of the inlet pipeline 3 and the outlet pipeline 4 are not more than 1/5 of the inner diameter of the cavity 2. A first quick-connection interface 5 is arranged between the inlet pipeline 3 and the pressure stabilizing tank 1; a second quick-connection interface 6 is arranged between the outlet pipeline 4 and the pressure stabilizing tank 1. The pressure stabilizing device 100 can be flexibly connected to and disconnected from the screw pump 14 and the high efficiency filter. A plurality of pressure stabilizing devices 100 are flexibly connected in series as needed on an existing coating system.
Specifically, the outlet pipe 4 is provided with a first ball valve 7. The cavity 2 is internally and horizontally provided with at least one layer of grid plate 8, the grid plate is provided with a plurality of meshes for the passing of slurry, the slurry is a Newton fluid, when the slurry passes through the grid plate, the slurry is sheared and thinned after passing through the grid plate 8, the viscosity of the slurry is greatly reduced, and when the slurry enters a die head, the slurry has better consistency, so that the coating consistency is improved. The grid plate is detachably connected with the inner wall of the cavity 2, protrusions 9 used for supporting the grid plate 8 are arranged in the cavity 2, and a plurality of protrusions 9 are circumferentially arranged on the inner wall of the cavity 2 at the same horizontal height at intervals.
The grid plate is detachably connected with the inner wall of the cavity 2, protrusions 9 used for supporting the grid plate 8 are arranged in the cavity 2, and a plurality of protrusions 9 are circumferentially arranged on the inner wall of the cavity 2 at the same horizontal height at intervals.
The top of the pressure stabilizing tank 1 is provided with a top cover 10, the top cover 10 is provided with a quick connection clamp 11, and the top cover 10 and the pressure stabilizing tank 1 are fixed through the quick connection clamp 11. The top cover 10 is provided with an exhaust pipe orifice 12, and the exhaust pipe orifice 12 is provided with an exhaust valve 13. When the device is first used, the vent valve 13 is opened and the vent valve 13 is closed after the slurry is visible from the vent.
Example 2
The embodiment discloses a lithium ion battery coating slurry pressure stabilizing system, as shown in fig. 4, comprising a pressure stabilizing device 100 described in the above embodiment 1, wherein an inlet pipeline 3 of the pressure stabilizing device 100 is connected with a discharge port of a screw pump 14, and an outlet pipeline 4 is connected with a feed port 15 of a high-efficiency filter.
Example 3
The present embodiment discloses a lithium ion battery coating paste pressure stabilizing system, as shown in fig. 5, comprising two pressure stabilizing devices 100 described in the above embodiment 1, wherein the pressure stabilizing devices 100 disposed adjacently are connected in series in the battery coating paste pressure stabilizing system.
The application principle is as follows: when the slurry comes out from the discharge hole of the screw pump 14, a certain pressure pulse exists, one or more stages of pressure stabilizing devices 100 are added behind the screw pump 14 to be used in series, and the large cavity of the pressure stabilizing device 100 can obviously weaken the slurry pressure pulse after entering the large cavity. The volume of the cavity is increased, and the corresponding pressure fluctuation is reduced.
The consistency of the slurry gel viscosity is improved, a plurality of layers of stainless steel nets are arranged in the pressure stabilizing device 100, the slurry is sheared after passing through the steel nets, and the Newtonian fluid has the characteristic of shear thinning. When the slurry is sheared by the multi-layer filter screen, the viscosity difference caused by gel can be greatly reduced, so that the consistency of entering a die head is improved, and the coating consistency is improved.
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 utility model provides a lithium ion battery coating slurry pressure stabilization device, its characterized in that, including pressure stabilization jar (1), pressure stabilization jar (1) is installed between screw pump (14) and high-efficient filter, pressure stabilization jar (1) inside is equipped with cavity (2), the internal diameter of cavity (2) is greater than screw pump (14) discharge gate pipe diameter.
2. Pressure stabilizing device according to claim 1, characterized in that the pressure stabilizing tank (1) is provided with an inlet pipe (3) at the side wall position, the pressure stabilizing tank (1) is provided with an outlet pipe (4) at the bottom position, and the inner diameter of the inlet pipe (3) and the inner diameter of the outlet pipe (4) are not more than 1/5-1/10 of the inner diameter of the cavity (2).
3. Pressure stabilizing device according to claim 2, characterized in that a first quick-connect connection (5) is provided between the inlet pipe (3) and the pressure stabilizing tank (1); a second quick-connection interface (6) is arranged between the outlet pipeline (4) and the pressure stabilizing tank (1).
4. Pressure stabilizing device according to claim 2, characterized in that the outlet pipe (4) is provided with a first ball valve (7).
5. Pressure stabilizing device according to claim 1, characterized in that at least one layer of mesh plates (8) is arranged horizontally in the cavity (2), the mesh plates (8) having a number of meshes.
6. Pressure stabilizing device according to claim 5, characterized in that the grid plate is detachably connected to the inner wall of the cavity (2), wherein the cavity (2) is provided with protrusions (9) for supporting the grid plate (8).
7. Pressure stabilizing device according to claim 1, characterized in that the top of the pressure stabilizing tank (1) is provided with a top cover (10), the top cover (10) is provided with a quick-connection clamp (11), and the top cover (10) and the pressure stabilizing tank (1) are fixed by the quick-connection clamp (11).
8. Pressure stabilizing device according to claim 7, characterized in that the top cover (10) is provided with a vent nozzle (12), and that the vent nozzle (12) is provided with a vent valve (13).
9. A lithium ion battery coating paste pressure stabilization system, characterized by comprising at least one pressure stabilization device (100) according to any one of claims 1-8, wherein the inlet pipe (3) of the pressure stabilization device (100) is connected with the discharge port of a screw pump (14), and the outlet pipe (4) of the pressure stabilization device (100) is connected with the feed port (15) of a high efficiency filter.
10. The pressure stabilizing system according to claim 9, characterized in that the pressure stabilizing system comprises at least two pressure stabilizing devices (100), the pressure stabilizing devices (100) being adjacently arranged being connected in series in the battery coating paste pressure stabilizing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321735792.8U CN220658173U (en) | 2023-07-03 | 2023-07-03 | Lithium ion battery coating paste pressure stabilizing device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321735792.8U CN220658173U (en) | 2023-07-03 | 2023-07-03 | Lithium ion battery coating paste pressure stabilizing device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220658173U true CN220658173U (en) | 2024-03-26 |
Family
ID=90352703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321735792.8U Active CN220658173U (en) | 2023-07-03 | 2023-07-03 | Lithium ion battery coating paste pressure stabilizing device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220658173U (en) |
-
2023
- 2023-07-03 CN CN202321735792.8U patent/CN220658173U/en active Active
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