CN218239722U - Supporting device for testing viscosity of electrolyte and device for testing viscosity of electrolyte - Google Patents
Supporting device for testing viscosity of electrolyte and device for testing viscosity of electrolyte Download PDFInfo
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- CN218239722U CN218239722U CN202222125650.1U CN202222125650U CN218239722U CN 218239722 U CN218239722 U CN 218239722U CN 202222125650 U CN202222125650 U CN 202222125650U CN 218239722 U CN218239722 U CN 218239722U
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Abstract
The utility model relates to an electrolyte viscosity test matching device and an electrolyte viscosity test device, wherein the viscosity test matching device comprises an electrolyte containing container; the electrolyte container comprises a cup body and a cup cover arranged on the cup body; the outer layer of the cup body is provided with a heat insulation layer, and the outer layer of the heat insulation layer is provided with a reinforcing layer; at least two holes are arranged on the cup cover. Supporting device of electrolyte viscosity test is arranged in electrolyte viscosity test, and test speed is fast, and viscosity test value is stable, and efficiency of software testing is high.
Description
Technical Field
The utility model relates to an electrolyte physics and chemistry index detects technical field, especially relates to an electrolyte viscosity test supporting device, electrolyte viscosity test device.
Background
The electrolyte is used as a bridge for connecting the positive electrode and the negative electrode and plays a role in ion conduction in the charge and discharge process. The electrolyte performance has important influence on the service life, high and low temperature discharge capacity and high power discharge capacity of the lithium battery. The viscosity is one of important parameter indexes for electrolyte performance evaluation, and directly influences the migration rate of lithium ions in the electrolyte and the infiltration speed of the electrolyte in an electrode. The low-viscosity electrolyte has higher infiltration speed in the electrode, thereby not only shortening the infiltration time of the electrolyte, but also improving the production efficiency of the lithium battery; generally, the conductivity of the low-viscosity electrolyte is higher, so that in high-power discharge, the low-viscosity electrolyte is more suitable for being used in a high-rate discharge scene. Therefore, in the electrolyte development, the high-low temperature viscosity measurement has certain reference significance on electrolyte screening.
CN211402045U discloses a variable-temperature rotary viscometer, which comprises a viscometer body, a bearing base and a high-low temperature constant-temperature circulation tank, wherein a soaking medium is arranged in the high-low temperature constant-temperature circulation tank; the high-low temperature constant-temperature circulating groove is formed in the bearing base, and the soaking medium is added, so that the temperature adjusting range is expanded to-90-180 ℃, and the viscosity of a sample is tested in a low-temperature environment.
CN204718924U discloses a high and low temperature detection device of a rotary viscometer, which comprises a thermostat, a viscometer fixing seat, a cold air generating device, a hot air generating device, a temperature sensor and a rotary viscometer, wherein the rotary viscometer is fixed inside the thermostat through the viscometer fixing seat; the temperature sensor is arranged in the constant temperature box; the side wall of the constant temperature box is provided with a cold air inlet, a hot air inlet and an air outlet, and the cold air inlet and the hot air inlet are respectively connected with a cold air generating device and a hot air generating device through connecting pipes. The temperature sensor is used for accurately measuring the temperature in the constant temperature box, so that the temperature in the constant temperature box is kept unchanged, the coating which needs to be subjected to viscosity detection at a specific temperature can be placed in the constant temperature box for viscosity detection, and an accurate measurement value can be obtained.
The electrolyte viscosity measurement at present mainly comprises a viscometer (such as a Brookfield viscometer) and a high-low temperature adapter, and when the viscosity of the electrolyte at low temperature is measured, the adapter needs to work for a long time to reach a low-temperature environment. Because the existence of moisture in the air, when testing electrolyte low temperature viscosity, freeze very easily between low temperature device and the splendid attire electrolyte sleeve pipe, freeze sleeve pipe and low temperature device together, lead to next a set of experiment to go on hardly, not only increased test time, also increased the test degree of difficulty. Moreover, the electrolyte is placed in a non-dehumidification environment for a long time, and moisture causes decomposition of certain components in the electrolyte, so that the accuracy of the viscosity test of the electrolyte is influenced.
Therefore, it is important to develop a device for measuring the viscosity of the electrolyte that is efficient, fast, and less disturbed by moisture.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a supporting device of electrolyte viscosity test and electrolyte viscosity testing arrangement, the supporting device of electrolyte viscosity test is arranged in the test of electrolyte viscosity, and test speed is fast, and viscosity test value is stable, and efficiency of software testing is high, can also reduce the interference of moisture.
To achieve the purpose, the utility model adopts the following technical proposal:
in a first aspect, the utility model provides an electrolyte viscosity test matching device, which comprises an electrolyte container;
the electrolyte container comprises a cup body and a cup cover arranged on the cup body;
the outer layer of the cup body is provided with a heat insulation layer, and the outer layer of the heat insulation layer is provided with a reinforcing layer;
at least two (e.g., 4, 6, 8, etc.) holes are provided in the lid.
In the utility model, the outer side of the cup body is provided with a heat insulating layer, the outer layer of the heat insulating layer is provided with a reinforcing layer, and the reinforcing layer further reinforces the heat insulating layer and is matched with the cup cover to block heat exchange, so that the temperature change of the electrolyte viscosity testing matching device is small in the viscosity testing process; therefore, the electrolyte container with the structure can not act with water in the air, and the moisture interference is reduced.
Preferably, the cup is a teflon cup.
The utility model discloses in, the cup is the polytetrafluoroethylene cup, can prevent that electrolyte from corroding, and polytetrafluoroethylene coefficient of heat conductivity is relatively poor moreover, can reduce cup and external heat exchange.
Preferably, the cup cover and the cup body provided with the heat insulation layer and the reinforcing layer have the same diameter.
Preferably, the cup cover is a corrosion-resistant rubber cover.
Preferably, the cup cover is provided with a rotor rod hole and a temperature test probe hole.
Preferably, the thickness of the thermal insulation layer is 10-20mm, such as 12mm, 14mm, 16mm, 18mm, etc.
Preferably, the thickness of the reinforcement layer is 1-2mm, such as 1.2mm, 1.4mm, 1.6mm, 1.8mm, and the like.
Preferably, the electrolyte viscosity test matching device further comprises a digital display high-low temperature box.
The utility model discloses in, through freezing or heating electrolyte in advance at digital display high and low temperature case, after reacing the temperature, pour electrolyte into electrolyte splendid attire container, cover foraminiferous bowl cover, prepare to carry out the viscosity test. Moreover, the digital display high-low temperature box is separated from the electrolyte container, so that the viscosity of the electrolyte can be tested, the efficiency of testing the electrolyte in batches is improved, and the interference of moisture on the viscosity test of the electrolyte is reduced.
In a second aspect, the utility model provides an electrolyte viscosity testing arrangement, electrolyte viscosity testing arrangement includes the first aspect supporting device of electrolyte viscosity test and viscosimeter.
Preferably, a viscometer rotor and a temperature test probe of the viscometer are respectively arranged in two holes on a cup cover in the electrolyte viscosity test set.
Exemplarily, in the utility model discloses, the operating principle of electrolyte viscosity testing arrangement is: placing an electrolyte sample to be tested in a digital display high-low temperature box, and when the low-temperature viscosity is tested, setting the temperature of the digital display high-low temperature box to be less than the target temperature by 1-2 ℃ (such as 1.2 ℃, 1.4 ℃, 1.6 ℃, 1.8 ℃ and the like); when the high-temperature viscosity is tested, the set temperature of the digital display high-temperature and low-temperature box is 1-2 ℃ higher than the target temperature (such as 1.2 ℃, 1.4 ℃, 1.6 ℃, 1.8 ℃ and the like). Pouring the electrolyte meeting the test condition into an electrolyte viscosity test configuration device, inserting a viscometer rotor into a rotor rod hole, connecting to a viscometer, inserting a temperature test probe into a temperature test probe hole, and starting to perform an electrolyte viscosity test when the temperature reaches a target test temperature; after the test is finished, the cup body is cleaned, and then the next sample test can be immediately carried out, so that the aims of high test speed and reduction of moisture interference are fulfilled.
Compared with the prior art, the utility model discloses following beneficial effect has:
when being used for electrolyte viscosity test supporting device, test speed is fast, the sample figure of test is more than 8 in 1 hour, the viscosity number is stable, little with the average value error, within 0.02mPa.s, efficiency of software testing is high, can also reduce the interference of moisture.
Drawings
FIG. 1 is a cross-sectional view of an electrolyte container of the electrolyte viscosity testing kit of the present invention;
FIG. 2 is a top view of an electrolyte container of the electrolyte viscosity testing kit of the present invention;
fig. 3 is a result chart of the viscosity of the electrolyte at low temperature tested by the matching device for testing the viscosity of the electrolyte of the utility model;
FIG. 4 is a graph showing the results of the viscosity test of the electrolyte at high temperature by the supporting device for testing the viscosity of the electrolyte of the present invention;
wherein, 1-the cup cover; 2-the cup body; 3-a heat insulating layer; 4-a reinforcing layer; 5-rotor rod bore; 6-temperature testing the probe hole.
Detailed Description
To facilitate understanding of the present invention, the present invention has the following embodiments. It should be understood by those skilled in the art that the described embodiments are merely provided to assist in understanding the present invention and should not be construed as specifically limiting the present invention.
The utility model provides a viscosity test matching device for electrolyte, which comprises an electrolyte container;
the electrolyte container comprises a cup body and a cup cover arranged on the cup body;
the outer layer of the cup body is provided with a heat insulation layer, and the outer layer of the heat insulation layer is provided with a reinforcing layer;
the cup lid is provided with at least two (e.g., 4, 6, 8, etc.) holes.
The utility model discloses in, the outside of cup is provided with the heat insulation layer, the skin of heat insulation layer is provided with the back up coat, the back up coat further reinforces the heat insulation layer, cooperation bowl cover separation heat exchange makes the supporting device of electrolyte viscosity test is in viscosity test process, and the temperature variation is little.
Preferably, the cup body is a polytetrafluoroethylene cup body, illustratively, polytetrafluoroethylene is purchased from jingdong hardware tools flagship shop, the trade mark is polytetrafluoroethylene beaker.
The utility model discloses in, the cup is the polytetrafluoroethylene cup, can prevent that electrolyte from corroding, and polytetrafluoroethylene coefficient of heat conductivity is relatively poor moreover, can reduce cup and external heat exchange.
Preferably, the diameter of the cup cover is the same as that of the cup body provided with the heat insulation layer and the reinforcing layer.
Preferably, the cup cover is a corrosion-resistant rubber cover, exemplarily, the cup cover is made of a material purchased from a Ji home special business in east of Beijing, and the brand is a rubber plug.
Preferably, the cup cover is provided with a rotor rod hole and a temperature test probe hole.
Preferably, the thickness of the thermal insulation layer is 10-20mm, such as 12mm, 14mm, 16mm, 18mm, etc.
Preferably, the thickness of the reinforcement layer is 1-2mm, such as 1.2mm, 1.4mm, 1.6mm, 1.8mm, etc.
Preferably, the electrolyte viscosity test matching device further comprises a digital display high-low temperature box.
The utility model discloses in, through freezing or heating electrolyte in advance at digital display high and low temperature case, after the arrival temperature, pour electrolyte into electrolyte splendid attire container, prepare to carry out the viscosity test.
The utility model provides an electrolyte viscosity testing arrangement, electrolyte viscosity testing arrangement includes the first aspect supporting device of electrolyte viscosity test and viscosimeter.
Preferably, the viscometer rotor and the temperature test probe of the viscometer are respectively arranged in two holes on the cup cover in the electrolyte viscosity test device.
Exemplarily, in the utility model discloses, the operating principle of electrolyte viscosity testing arrangement is: placing an electrolyte sample to be tested in a digital display high-low temperature box, and when the low-temperature viscosity is tested, setting the temperature of the digital display high-low temperature box to be less than the target temperature by 1-2 ℃ (such as 1.2 ℃, 1.4 ℃, 1.6 ℃, 1.8 ℃ and the like); when the high-temperature viscosity is tested, the set temperature of the digital display high-temperature and low-temperature box is 1-2 ℃ higher than the target temperature (such as 1.2 ℃, 1.4 ℃, 1.6 ℃, 1.8 ℃ and the like). Pouring the electrolyte meeting the test condition into an electrolyte viscosity test configuration device, inserting a viscometer rotor into a rotor rod hole, connecting the rotor rod hole to a viscometer, inserting a temperature test probe into a temperature test probe hole, and starting to test the viscosity of the electrolyte when the temperature reaches a target test temperature; after the test is finished, the cup body is cleaned by the organic solvent such as dimethyl carbonate, the next sample test can be immediately carried out, and the aims of high test speed and reduction of moisture interference are achieved.
Example 1
The embodiment provides an electrolyte viscosity test matching device, which comprises an electrolyte container and a digital display high and low temperature box;
the electrolyte container is shown in a sectional view and a top view in fig. 1 and comprises a cup body 2 and a cup cover 1 arranged on the cup body;
the outer layer of the cup body is provided with a heat insulation layer 3, and the thickness of the heat insulation layer is 15mm; the outer layer of the heat insulation layer is provided with a reinforcing layer 4 with the thickness of 1.5mm;
the cup body is provided with a cup cover;
and two holes, namely a rotor rod hole 5 and a temperature test probe hole 6, are formed in the cup cover.
The cup body is a polytetrafluoroethylene cup body.
The diameter of the cup cover is the same as that of the cup body provided with the heat insulation layer and the reinforcing layer.
The cup cover is a corrosion-resistant rubber cover.
Performance test
1. Low-temperature viscosity: preparing five electrolytes A-E, wherein the electrolyte A contains 1mol/L lithium salt LiPF 6 The electrolyte A comprises a solvent (volume ratio of EC: DMC: EMC = 1) 2 F 2 、LiDFOB、LiBF 4 And putting five electrolyte samples to be detected into a digital display high-low temperature box, wherein the set temperature of the digital display high-low temperature box is-22 ℃, and the target temperature is-20 ℃. Pouring the electrolyte meeting the test condition into an electrolyte viscosity test configuration device, inserting a viscometer rotor into a rotor rod hole, connecting to a viscometer, inserting a temperature test probe into a temperature test probe hole, and starting to perform an electrolyte viscosity test when the temperature reaches a target test temperature; after the test is finished, after the cup body is cleaned by dimethyl carbonate, the next sample test is immediately carried out, the same electrolyte is tested for three times, and the stability of the viscosity value is observed.
The test result is shown in fig. 3, when the viscosity test matching device of the utility model is used for testing the electrolyte at low temperature viscosity, the viscosity value is stable, the error from the average value is small, the test efficiency is high within 0.02mPa.s, and the interference of moisture can be reduced; the number of samples tested in 1 hour is more than 8, the samples of different electrolytes are not affected with each other during testing, the testing speed is high, and the testing efficiency is high.
2. High temperature viscosity: preparing five electrolytes A-E, wherein the electrolyte A contains 1mol/L lithium salt LiPF 6 The solvent (volume ratio is EC: DMC: EMC =1 2 F 2 、LiDFOB、LiBF 4 And putting five electrolyte samples to be detected into a digital display high-low temperature box, wherein the set temperature of the digital display high-low temperature box is 47 ℃, and the target temperature is 45 ℃. Pouring the electrolyte meeting the test condition into an electrolyte viscosity test configuration device, inserting a viscometer rotor into a rotor rod hole, connecting the rotor rod hole to a viscometer, inserting a temperature test probe into a temperature test probe hole, and starting to test the viscosity of the electrolyte when the temperature reaches a target test temperature; after the test is finished, after the cup body is cleaned by dimethyl carbonate, the next sample test is immediately carried out, the same electrolyte is tested for three times, and the stability of the viscosity value is observed.
The test result is shown in fig. 4, and the result shows that when the viscosity test matching device of the utility model is used for testing the electrolyte under high-temperature viscosity, the viscosity value is stable, the error with the average value is small, the test efficiency is high within 0.02mPa.s, and the interference of moisture can be reduced; the number of samples tested in 1 hour is more than 8, the samples of different electrolytes are not affected with each other during testing, the testing speed is high, and the testing efficiency is high.
The applicant states that the present invention is described in detail by the above embodiments, but the present invention is not limited to the above detailed method, i.e. the present invention is not meant to be implemented by relying on the above detailed method. It should be clear to the skilled person in the technical field that any improvement to the utility model discloses, to the equivalent replacement of each raw materials of the utility model and the interpolation of auxiliary component, the selection of concrete mode etc. all fall within the scope of protection and the scope of disclosure of the utility model.
Claims (10)
1. The viscosity test matching device for the electrolyte is characterized by comprising an electrolyte accommodating container;
the electrolyte container comprises a cup body and a cup cover arranged on the cup body;
the outer layer of the cup body is provided with a heat insulation layer, and the outer layer of the heat insulation layer is provided with a reinforcing layer;
at least two holes are arranged on the cup cover.
2. The kit for testing the viscosity of an electrolyte according to claim 1, wherein the cup is a teflon cup.
3. The kit for testing the viscosity of the electrolyte according to claim 1, wherein the cup cover has the same diameter as the cup body provided with the heat insulating layer and the reinforcing layer.
4. The kit for testing the viscosity of the electrolyte according to claim 1, wherein the cup cover is a corrosion-resistant rubber cover.
5. The electrolyte viscosity test kit as claimed in claim 1, wherein the cup cover is provided with a rotor rod hole and a temperature test probe hole.
6. The electrolyte viscosity test kit according to claim 1, wherein the thickness of the thermal insulation layer is 10-20mm.
7. The kit for testing the viscosity of the electrolyte according to claim 1, wherein the thickness of the reinforcing layer is 1-2mm.
8. The electrolyte viscosity test kit according to claim 1, further comprising a digital display high and low temperature box.
9. An electrolyte viscosity testing device, characterized in that the electrolyte viscosity testing device comprises the electrolyte viscosity testing kit and the viscometer of any one of claims 1 to 8.
10. The apparatus according to claim 9, wherein the viscometer rotor and the temperature measuring probe of the viscometer are respectively disposed in two holes of the cup lid in the electrolyte viscosity measuring set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222125650.1U CN218239722U (en) | 2022-08-12 | 2022-08-12 | Supporting device for testing viscosity of electrolyte and device for testing viscosity of electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222125650.1U CN218239722U (en) | 2022-08-12 | 2022-08-12 | Supporting device for testing viscosity of electrolyte and device for testing viscosity of electrolyte |
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| Publication Number | Publication Date |
|---|---|
| CN218239722U true CN218239722U (en) | 2023-01-06 |
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| CN202222125650.1U Active CN218239722U (en) | 2022-08-12 | 2022-08-12 | Supporting device for testing viscosity of electrolyte and device for testing viscosity of electrolyte |
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| CN (1) | CN218239722U (en) |
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- 2022-08-12 CN CN202222125650.1U patent/CN218239722U/en active Active
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