CN215866255U - Device for evaluating fluidity of slurry - Google Patents
Device for evaluating fluidity of slurry Download PDFInfo
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- CN215866255U CN215866255U CN202122053661.9U CN202122053661U CN215866255U CN 215866255 U CN215866255 U CN 215866255U CN 202122053661 U CN202122053661 U CN 202122053661U CN 215866255 U CN215866255 U CN 215866255U
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Abstract
The utility model relates to a device for evaluating the fluidity of slurry, and belongs to the technical field of new energy lithium battery slurry. The slurry tank stores initial slurry, a slurry tank outlet is formed in the bottom of the slurry tank, and the opening and closing of the slurry tank outlet are controlled through a slurry tank partition plate arranged on the slurry tank in an inserted mode; the thick liquids flow through the thick liquids passageway of below slope setting, when passing through the test termination line at last, accomplish the timing after being responded to by the response light beam. The device for evaluating the fluidity of the slurry has the advantages of reasonable structure, low test cost, few human factors in the test and reliable data.
Description
Technical Field
The utility model relates to a device for evaluating the fluidity of slurry, and belongs to the technical field of new energy lithium battery slurry.
Background
In the prior art, in the manufacture of electrodes of lithium ion batteries, positive electrode slurry comprises a binder, a conductive agent, a positive electrode material and the like, and negative electrode slurry comprises a binder, graphite carbon powder and the like. The preparation of the positive electrode slurry and the negative electrode slurry comprises a series of processes of mixing, dissolving, dispersing and the like between liquid and between liquid and solid materials, and the processes are accompanied by changes of temperature, viscosity, environment and the like. In the positive electrode slurry and the negative electrode slurry, the slurry fluidity is crucial in the production of the lithium ion battery, and the quality of the slurry fluidity directly influences the quality of the subsequent lithium ion battery production and the performance of the product thereof.
The lithium ion battery slurry is composed of a plurality of raw materials with different specific gravities and different particle sizes, and is formed by mixing and dispersing solid and liquid phases, and belongs to non-Newtonian fluid. The lithium ion battery slurry is an oily flowing liquid, so the lithium ion battery slurry has the characteristics of common fluids such as viscosity, fluidity and the like, the slurry fluidity can influence the coated surface density, and further influence the compaction density and the cell performance of a pole piece, and no clear method or instrument is used for evaluating the slurry fluidity at present. The current test method: the sizing agent with certain volume or weight flows to a weighing instrument at the bottom after being filtered by a screen, and when the sizing agent at the upper part completely flows out or the weighed sizing agent is consistent with the original weight of the sizing agent, the time for the sizing agent to completely flow out is counted. The method has certain defects that slurry passes through the screen and is left on the screen, the weight of the slurry flowing downwards is smaller than the original weight, the time for terminating the test cannot be determined, the amount of the slurry left on the screen is different according to the flowability of the slurry, and the error is larger.
For example, chinese patent with patent publication No. CN113075087A discloses an electrode slurry performance testing device in the technical field of lithium ion battery slurry, and the above patent also relates to an electrode slurry performance testing method, wherein one side of a trough of the electrode slurry performance testing device is movably sleeved in an opening of a column i through a rod member i, the other side of the trough is movably sleeved in an opening of a column ii through a rod member ii, a threaded part at the outer end of the rod member ii is screwed with an adjusting shaft, the front part of the trough is provided with a plurality of flow guide pipes, and the rear part of the trough is provided with a trough rear cover.
The electrode slurry performance testing device and the testing method thereof can simultaneously measure the fluidity and the stability of the electrode slurry; but the pressure is given to the material groove by a pneumatic pump, so that the slurry flows out of different flow guide pipes, and the extrusion amount of one minute is collected for many times so as to calculate the fluidity; the device has the advantages of complex structure, more required equipment, high cost and long test time.
Therefore, in order to solve the above-mentioned background problems, it is urgent to develop a device for evaluating the fluidity of slurry.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the background, and provides a device for evaluating the fluidity of slurry, which has the advantages of reasonable structure, low test cost, few artificial factors in the test and more reliable data.
The purpose of the utility model is realized as follows: a device for evaluating the fluidity of slurry comprises a base, wherein the base is of a right-angle bending base structure and comprises a bottom plate and a vertical plate; the top of the vertical plate is provided with a slurry tank in a matching way, the bottom of the slurry tank is provided with a slurry tank outlet, and the opening and closing of the slurry tank outlet are controlled by a slurry tank partition plate arranged on the slurry tank in an inserted way;
a slurry channel is obliquely arranged below the outlet of the slurry tank, one end of the slurry channel is arranged on a clamping groove of a vertical plate of the base, and the other end of the slurry channel is connected with the slurry tank;
a test termination line is arranged between the slurry channel and the slurry pool, an optical sensor is arranged on a horizontal extension line of the test termination line, and an induction light beam of the optical sensor is matched with the test termination line;
the bottom of the slurry pool is provided with a slurry pool flow port, and the opening and closing of the slurry pool flow port are controlled by a slurry pool partition plate arranged on one side of the slurry pool in an inserting manner;
and a timer is arranged on the other side of the slurry tank and is connected with the optical sensor through a lead.
A handle is further arranged on one side of the vertical plate of the base;
and reinforcing ribs are arranged between the bottom plate and the vertical plate of the base.
And an aluminum foil layer is laid on the upper surface of the slurry channel.
The screens groove has a plurality ofly, and a plurality of screens grooves are along vertical direction equipartition on the riser of base.
Compared with the prior art, the utility model has the following advantages:
the device for evaluating the fluidity of the slurry can effectively quantify and evaluate the fluidity of the slurry and provide data support for evaluating the performance of the slurry; meanwhile, the testing process is simple in steps, strong in practicability, less in interference of human factors and reliable in data; the aluminum foil layer is arranged on the surface of the flow channel, so that the flowability of the slurry on the foil can be further simulated, and the flow channel is more authentic;
according to the device for evaluating the fluidity of the slurry, the slurry flow channel is integrally visually designed, the fluidity of the slurry can be visually and preliminarily judged according to the state of the slurry flowing down in the flow channel, if the advancing speeds of the slurry in the flow channel with uniform slurry are basically consistent, the fluidity of the slurry is basically good, and if the advancing speeds of the slurry are not uniform, the fluidity is poor; after test data are accumulated, due to the fact that the flowability of the slurries with the same viscosity and different types is different, comparison of the slurries with the same viscosity and different types corresponding to different flowing time ranges under the same slide angle can be set through a limited experiment and used for comparing and judging the flowability of the slurries under the condition of testing univariates;
meanwhile, according to the device for evaluating the flowability of the slurry, the clamping grooves are uniformly distributed on the vertical plate of the base along the vertical direction, different slide ways can be selected to connect the clamping grooves and the clamping pools, and the angles of the slide ways are different; the fluidity of different types of slurry is compared for a plurality of times through different angles, and the data is more persuasive.
Drawings
Fig. 1 is a schematic overall structure diagram of an apparatus for evaluating slurry fluidity according to the present invention.
Fig. 2 is a bottom view of a flow port of an apparatus for evaluating fluidity of slurry according to the present invention.
Fig. 3 is a side view of the outlet of the slurry tank of an apparatus for evaluating the fluidity of slurry according to the present invention.
Wherein: 1. a base; 2. a handle; 3. a slurry tank; 4. a slurry tank partition plate; 5. a slurry passage; 6. an aluminum foil layer; 7. testing the termination line; 8. an optical sensor; 9. a clamping groove; 10. a material flowing port of the slurry pool; 11. a slurry tank partition; 12. a timer; 13. an outlet of the slurry tank; 14. and (5) reinforcing ribs.
Detailed Description
The utility model is described below with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 to 3, in the embodiment, the apparatus for evaluating the fluidity of the slurry includes a base 1, wherein the base 1 is a right-angle bent base structure including a bottom plate and a vertical plate; the top of the vertical plate is provided with a slurry tank 3 in a matching way, the bottom of the slurry tank 3 is provided with a slurry tank outlet 13, and the opening and closing of the slurry tank outlet 13 are controlled by a slurry tank partition plate 4 arranged on the slurry tank 3 in an inserted way;
a slurry channel 5 is obliquely arranged below the outlet 13 of the slurry tank, one end of the slurry channel 5 is arranged on a clamping groove 9 of a vertical plate of the base 1, and the other end of the slurry channel is connected with the slurry tank;
a test termination line 7 is arranged between the slurry channel 5 and the slurry tank, an optical sensor 8 is arranged on a horizontal extension line of the test termination line 7, and an induction light beam of the optical sensor 8 is matched with the test termination line 7;
the bottom of the slurry pool is provided with a slurry pool material flowing port 10, and the opening and closing of the slurry pool material flowing port 10 are controlled by a slurry pool partition plate 11 arranged on one side of the slurry pool in an inserting manner;
and a timer 12 is arranged on the other side of the slurry tank, and the timer 12 is connected with the optical sensor 8 through a lead.
A handle 2 is further arranged on one side of the vertical plate of the base 1;
and reinforcing ribs 14 are arranged between the bottom plate and the vertical plate of the base 1.
An aluminum foil layer 6 is laid on the upper surface of the slurry channel 5.
The screens groove 9 has a plurality ofly, and a plurality of screens grooves are along vertical direction equipartition on the riser of base 1.
Example 1
Firstly, adopting lithium iron phosphate slurry, wherein the anode of the lithium iron phosphate slurry is German nano DY-1 slurry, and preparing 500g of anode slurry with the viscosity of 8352 Pa.s:
in this example, the following test method was employed:
the method comprises the following steps: the base 1 of the device is placed on a horizontal plane, and a vertical plate is ensured to be vertical to the horizontal plane;
step two: selecting a slurry channel 5, wherein one end of the slurry channel is clamped in a clamping groove 9 of a vertical plate, the other end of the slurry channel is connected with a slurry pool, and the angle of a slide way formed by the slurry channel and a horizontal plane is 30 degrees;
step three: inserting a pulp tank partition plate 4 arranged on a pulp tank 3, inserting a pulp tank partition plate 11 into a pulp tank, laying an aluminum foil layer 6 in a pulp channel 5, and adding the pulp into the pulp tank 3 after confirming that a timer 12 returns to zero;
step four: opening a timer 12 to time while opening a separation plate 4 of the slurry tank, enabling the slurry to flow down along a slurry channel 5, and simultaneously observing whether the flow rate of the slurry is uniform;
step five: when the flowing-down slurry touches the test termination line 7, the sensing light beam of the optical sensor 8 is shielded, the sensing signal is transmitted to the timer 12 through the lead, the timer 12 finishes timing, and the time is recorded as 16.2 seconds;
step six: opening a slurry pool partition plate 11 in a slurry pool material flowing port 10, and allowing slurry to flow out;
step seven: repeating the operation of the first step to the sixth step for multiple times to obtain German nano DY-1 slurry under the condition that the viscosity is 8352Pa.s, wherein the time range of reaching the test termination line 7 when the included angle between the slideway and the horizontal plane is 30 degrees is 15.8 seconds to 16.9 seconds, and the average time is 16.4 seconds;
step eight: then, adding 500g of fibrate S13 anode slurry with the same viscosity of 8352Pa.s into the fibrate S13 anode slurry, and repeating the operation of the first step to the seventh step;
step nine: accumulating test data, and testing fibrate S13 anode slurry with the same viscosity of 8352Pa.s, wherein due to different types and different flowability of the slurry, the flowing time range is 17.1-17.9 seconds when the included angle between the slide way and the horizontal plane is 30 degrees, and the average time is 17.5 seconds;
step ten: and result analysis shows that the German nano DY-1 slurry and the fenofibrate S13 positive slurry with the same viscosity are compared according to the test result, and flow time ranges are correspondingly different under the same slide angle, so that the flow quality comparison is obtained.
According to the analysis of the results, in the embodiment, the corresponding viscosity of the German nanometer DY-1 slurry is 8352Pa.s, the corresponding flowing time range is 15.8 seconds to 16.9 seconds when the included angle between the slideway and the horizontal plane is 30 degrees, and the average time is 16.4 seconds; the fibrate-resorcinol S13 positive slurry with the viscosity of 8352Pa.s has a corresponding flowing time range of 17.1-17.9 seconds and an average time of 17.5 seconds when the included angle between the slide way and the horizontal plane is 30 degrees;
therefore, it was concluded that the flow of German nanometer DY-1 slurry was superior to the fibrate S13 slurry at a viscosity of 8352 Pa.s.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (4)
1. An apparatus for evaluating fluidity of slurry, characterized in that: the base (1) is of a right-angle bending base structure and comprises a bottom plate and a vertical plate; the top of the vertical plate is provided with a slurry tank (3) in a matching way, the bottom of the slurry tank (3) is provided with a slurry tank outlet (13), and the opening and closing of the slurry tank outlet (13) are controlled by a slurry tank partition plate (4) arranged on the slurry tank (3) in an inserted way;
a slurry channel (5) is obliquely arranged below the slurry channel outlet (13), one end of the slurry channel (5) is arranged on a clamping groove (9) of a vertical plate of the base (1), and the other end of the slurry channel is connected with a slurry pool;
a test termination line (7) is arranged between the slurry channel (5) and the slurry pool, an optical sensor (8) is arranged on a horizontal extension line of the test termination line (7), and an induction light beam of the optical sensor (8) is matched with the test termination line (7);
the bottom of the slurry pool is provided with a slurry pool flow port (10), and the opening and closing of the slurry pool flow port (10) are controlled by a slurry pool partition plate (11) arranged at one side of the slurry pool in an inserting manner;
and a timer (12) is arranged on the other side of the slurry tank, and the timer (12) is connected with the optical sensor (8) through a lead.
2. The apparatus for evaluating the fluidity of the slurry according to claim 1, wherein: a handle (2) is further arranged on one side of the vertical plate of the base (1);
and reinforcing ribs (14) are arranged between the bottom plate and the vertical plate of the base (1).
3. The apparatus for evaluating the fluidity of the slurry according to claim 1, wherein: and an aluminum foil layer (6) is laid on the upper surface of the slurry channel (5).
4. The apparatus for evaluating the fluidity of the slurry according to claim 1, wherein: screens groove (9) have a plurality ofly, a plurality of screens grooves along vertical direction equipartition on the riser of base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122053661.9U CN215866255U (en) | 2021-08-30 | 2021-08-30 | Device for evaluating fluidity of slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122053661.9U CN215866255U (en) | 2021-08-30 | 2021-08-30 | Device for evaluating fluidity of slurry |
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| Publication Number | Publication Date |
|---|---|
| CN215866255U true CN215866255U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122053661.9U Active CN215866255U (en) | 2021-08-30 | 2021-08-30 | Device for evaluating fluidity of slurry |
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| CN (1) | CN215866255U (en) |
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2021
- 2021-08-30 CN CN202122053661.9U patent/CN215866255U/en active Active
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