CN112858103A - Wettability testing device and testing method thereof - Google Patents
Wettability testing device and testing method thereof Download PDFInfo
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- CN112858103A CN112858103A CN202110031348.7A CN202110031348A CN112858103A CN 112858103 A CN112858103 A CN 112858103A CN 202110031348 A CN202110031348 A CN 202110031348A CN 112858103 A CN112858103 A CN 112858103A
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- 238000012360 testing method Methods 0.000 title claims abstract description 90
- 238000007654 immersion Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000009736 wetting Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 53
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- 238000005303 weighing Methods 0.000 claims description 27
- 230000008595 infiltration Effects 0.000 claims description 24
- 238000001764 infiltration Methods 0.000 claims description 24
- 238000002791 soaking Methods 0.000 claims description 5
- 238000004043 dyeing Methods 0.000 claims description 4
- 230000009194 climbing Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Abstract
The invention provides a device and a method for testing wettability, wherein the testing device comprises a sealed shell, a scale is arranged in the sealed shell, a water tank filled with a wetting solution is arranged on the scale, and a heater is arranged on the water tank; the water tank is characterized in that a lifting device is arranged above the water tank and used for lifting an object to be measured, a monitor is further arranged in the sealed shell and used for observing conditions in the sealed shell. The invention adjusts the vacuum degree of the detection environment and the temperature of the immersion liquid through the heater and the sealing shell, thereby realizing the immersion measurement under different conditions, and the combination of the lifting device and the monitor avoids the influence of human factors, further enhances the accuracy of the test result, in addition, can record the immersion process in real time according to the monitor, enhances the representation of the immersion process, and has the characteristics of simple structure, simple operation, accurate test result and the like.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, relates to an wettability testing device, and particularly relates to a wettability testing device and a testing method thereof.
Background
In recent years, with the development of new energy technology and market, lithium batteries have become one of the most important power sources of electric vehicles. The lithium battery generally comprises four parts, namely a polar plate, electrolyte, a diaphragm and a shell, wherein the diaphragm is usually arranged between the two polar plates of the battery and mainly used for preventing an electronic conduction circuit from being formed between the positive polar plate and the negative polar plate and allowing ion conduction, the polar plates and the diaphragm are soaked in the electrolyte in the shell, and the wettability of the electrolyte on the diaphragm and the polar plates is one of important performance indexes of the battery.
When the injection amount of the battery is small or the aging time after the injection is short, the electrolyte cannot completely infiltrate the negative electrode, and small black spots which are not embedded with lithium and dry up are formed at positions which are not sufficiently infiltrated, and slight lithium precipitation possibly occurs around the black spots. The current pole piece infiltration mainly depends on liquid absorption test and electrochemical test. The liquid absorption test mostly adopts a weight loss method, namely the liquid absorption rate can be determined by the company A ═ W2-W1)/W2100% of the total of W1Weight of non-imbibed pole piece, W2In order to completely soak the weight for a long enough time, the method has larger error in the process data of the liquid suction device.
CN103512821A discloses a method for testing the liquid absorption rate of a battery diaphragm, which comprises the following steps: (1) intercepting a diaphragm sample; (2) the diaphragm sample volume was measured and recorded as V1(ii) a (3) Placing the container filled with the electrolyte on an electronic balance, enabling the reading to return to zero, fixing a ring by using a thin wire, and recording the reading of the balance as M after the ring is completely immersed and suspended in the electrolyte1(ii) a (4) Fixing the diaphragm sample on the circular ring, repeating the step (3), and recording the reading of the balance as M after 1-180 minutes2(ii) a (5) Formula L substituting the liquid absorption rate is (ρ V)1+M1-M2)/V1And calculating the liquid absorption rate L. Although the accuracy is improved by adopting a drainage method to absorb liquid, only one parameter of the liquid absorption rate is output, and the process is not characterized.
CN108225983A discloses a testing device for wettability of a lithium ion battery diaphragm, which comprises an electrolyte container, a clamping piece, a conductive electrode and a conductivity meter; the electrolyte container is provided with an accommodating space and comprises a top wall and a bottom wall, the clamping piece is clamped between the top wall and the bottom wall and is accommodated in the accommodating space, the clamping piece is used for clamping the diaphragm to be tested, and the clamping piece and the diaphragm divide the accommodating space into a first accommodating groove and a second accommodating groove; the first containing groove is used for containing lithium salt and solvent, and the second containing groove is used for containing solvent; one end of the conductive electrode is accommodated in the second accommodating groove and is immersed in the solvent, and the other end of the conductive electrode is connected with the conductivity meter. The testing device and the testing method for the wettability of the lithium ion battery diaphragm provided by the invention have the advantages of simple structure and convenience in operation.
CN110672470A discloses a pole piece infiltration testing method and device for secondary battery. The pole piece infiltration testing method of the secondary battery comprises the following steps: (1) sucking a predetermined amount of electrolyte by using a micro sampler; (2) contacting the micro-sampler with a pole piece to be detected, and absorbing electrolyte in the micro-sampler by the pole piece to be detected under the capillary action; (3) and recording the absorbed amount of the electrolyte in the micro-sampler after a preset time, and quantitatively calculating the final absorption rate of the pole piece to be detected according to the absorbed amount and the ratio of the preset time. The pole piece infiltration testing method of the secondary battery can effectively improve the accuracy of the test result of the electrolyte absorption rate of the pole piece to be tested.
The existing wettability testing device has the problems of complex structure, inconvenient operation, variable operation environment and the like, so that the problem that how to test the wettability and the wettability height under the conditions of simple structure and simple operation and different temperatures and vacuum conditions is the problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a wettability testing device and a testing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a wettability testing device, which comprises a sealed shell, wherein a scale is arranged in the sealed shell, a water tank filled with a wetting solution is arranged on the scale, and the water tank is provided with a heater; the water tank is characterized in that a lifting device is arranged above the water tank and used for lifting an object to be measured, a monitor is further arranged in the sealed shell and used for observing conditions in the sealed shell.
The invention adjusts the vacuum degree of the detection environment and the temperature of the immersion liquid through the heater and the sealing shell, thereby realizing the immersion measurement under different conditions, and the combination of the lifting device and the monitor avoids the influence of human factors, further enhances the accuracy of the test result, in addition, can record the immersion process in real time according to the monitor, enhances the representation of the immersion process, and has the characteristics of simple structure, simple operation, accurate test result and the like.
It should be noted that the present invention does not specifically require and limit the type of monitor, the monitor of the present invention can monitor and record the infiltration condition of the object to be measured in real time, and those skilled in the art can reasonably select the type of monitor according to actual requirements, for example, the monitor is a rotatable camera.
It should be noted that the kind of the weighing apparatus of the present invention is not specifically required or limited, and those skilled in the art can reasonably select the kind of the weighing apparatus according to actual needs, and optionally, the weighing apparatus is a weighing balance.
It should be noted that the structure of the lifting device is not specifically required and limited, and those skilled in the art can reasonably select the structure of the lifting device according to the operation track of the object to be measured, for example, the lifting device is a lifting mechanical arm.
As a preferable technical scheme of the invention, the sealed shell is provided with a nitrogen inlet and a vacuum exhaust port.
Preferably, the nitrogen inlet is connected to a nitrogen source through a nitrogen valve.
Preferably, the vacuum exhaust port is connected with a vacuum pump.
The invention adjusts the gas composition and pressure in the sealed shell through the vacuum pump and the nitrogen source, firstly, the influence of oxygen in the air on the infiltration result is avoided, secondly, the infiltration process is further close to the actual use process through adjusting the gas pressure, and the measurement result is accurate.
As a preferable technical solution of the present invention, a measurer is disposed at a side of the water tank close to the object to be measured, and is configured to measure an immersion height of the object to be measured, where the immersion height is a vertical distance between a climbing point of an immersion liquid on the object to be measured and a liquid surface.
Preferably, the measuring device is a graduated scale.
The scale is used for representing the infiltration height in an auxiliary mode, and the scale is used for measuring the infiltration height of the infiltration liquid on the object to be measured.
As a preferable technical solution of the present invention, the heater includes a heating plate, and the heating plate is located between the scale and the water tank.
As a preferred technical solution of the present invention, a pressure sensor is further disposed in the sealed housing, and the pressure sensor is used for detecting air pressure in the sealed housing.
Preferably, a temperature sensor is arranged in the water tank and used for detecting the temperature of the immersion liquid.
As a preferred technical solution of the present invention, the testing device further comprises a controller, and the controller is respectively and independently electrically connected to the lifting device, the heater, the monitor, the nitrogen valve and the vacuum pump.
The lifting device, the heater, the monitor, the nitrogen valve and the vacuum pump are respectively and independently controlled by the controller, and the lifting device is respectively adjusted and controlled to lift and grab; the temperature of the heater; a viewing angle of the monitor; opening a nitrogen valve; the vacuum degree of the vacuum pump. The test conditions and test operations may be adjusted by the controller.
As a preferred technical solution of the present invention, the testing device further includes an output device, the output device is respectively and independently electrically connected to the pressure sensor, the temperature sensor and the monitor, and the output device is used for outputting the air pressure, the immersion liquid temperature and the monitor picture in the sealed housing.
The invention can detect and record the air pressure, the temperature of the immersion liquid and the monitor picture in the sealed shell in real time by arranging the output device, thereby further ensuring the accuracy of the test result.
In a second aspect, the present invention provides a method for performing wettability testing by using the wettability testing apparatus according to the first aspect, where the testing method includes:
the lifting device places the object to be measured in the water tank until the weighing value of the weighing device is stable, records the weighing value, and observes the infiltration height through the monitor.
As a preferred technical solution of the present invention, the testing method specifically includes the following steps:
the controller controls the heater, the nitrogen valve and the vacuum pump to adjust the air pressure in the sealed shell and the temperature of the impregnating solution;
(II) the lifting device places the object to be measured in the water tank for wettability test, the monitor monitors the wetting process of the object to be measured, and when the weighing value of the weighing device is stable, the weighing value is recorded, and the wetting height is recorded through the monitor and the graduated scale.
As a preferable technical scheme of the invention, in the step (ii), the surface of the object to be measured is provided with a test paper, and the test paper is used for identifying the infiltration height.
Preferably, in the step (ii), the soaking solution in the water tank is subjected to dyeing treatment.
According to the invention, the test paper is arranged on the surface of the object to be tested, or the immersion liquid is dyed, so that the immersion height can be easily identified through the test paper or the dyed immersion height in the immersion process, and the immersion height readings can be further read through the graduated scale.
It should be noted that the present invention does not specifically require or limit the material of the test paper, and the test paper disclosed in the prior art and not disclosed in the new technology, which can clearly identify the wetting height of the wetting solution, can be used in the present invention.
Compared with the prior art, the invention has the beneficial effects that:
the invention adjusts the vacuum degree of the detection environment and the temperature of the immersion liquid through the heater and the sealing shell, thereby realizing the immersion measurement under different conditions, and the combination of the lifting device and the monitor avoids the influence of human factors, further enhances the accuracy of the test result, in addition, can record the immersion process in real time according to the monitor, enhances the representation of the immersion process, and has the characteristics of simple structure, simple operation, accurate test result and the like.
Drawings
Fig. 1 is a schematic structural diagram of an wettability testing apparatus according to an embodiment of the present invention.
Wherein, 1-sealing the shell; 2-a lifting device; 3-weighing device; 4-a water tank; 5-a heater; 6-nitrogen inlet; 7-vacuum exhaust port; 8-a graduated scale; 9-the substance to be detected; 10-monitor.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments.
In one embodiment, the invention provides a wettability testing device, as shown in fig. 1, the testing device comprises a sealed housing 1, a scale 3 is arranged in the sealed housing 1, a water tank 4 filled with a wetting solution is arranged on the scale 3, and a heater 5 is arranged on the water tank 4; the water tank 4 is provided with a lifting device 2 above, the lifting device 2 is used for lifting an object to be measured 9, a monitor 10 is further arranged in the sealing shell 1, the monitor 10 is used for observing conditions in the sealing shell 1, optionally, the weighing device 3 is a weighing balance, the lifting device 2 is a lifting mechanical arm, and the monitor 10 is a rotatable camera.
According to the invention, the vacuum degree of the detection environment and the temperature of the immersion liquid are adjusted through the heater 5 and the sealing shell 1, so that the immersion measurement is realized under different conditions, the influence of human factors is avoided through the combination of the lifting device 2 and the monitor 10, the accuracy of the test result is further enhanced, in addition, the immersion process can be recorded in real time according to the monitor 10, the characterization of the immersion process is enhanced, and the device has the characteristics of simple structure, simplicity in operation, accurate test result and the like.
Further, the sealed housing 1 is provided with a nitrogen inlet 6 and a vacuum exhaust port 7. The nitrogen inlet 6 is connected with a nitrogen source through a nitrogen valve. The vacuum exhaust port 7 is connected with a vacuum pump.
According to the invention, the gas components and pressure in the sealed shell 1 are adjusted through the vacuum pump and the nitrogen source, so that the influence of oxygen in the air on the infiltration result is firstly avoided, and then, the infiltration process is further close to the actual use process by adjusting the gas pressure, so that the measurement result is accurate.
Further, a measurer is arranged at one side of the water tank 4 close to the object to be measured 9, and is used for measuring the immersion height of the object to be measured 9, wherein the immersion height is the vertical distance between the climbing point of the immersion liquid on the object to be measured and the liquid level. Further, the measuring device is a scale 8. The scale 8 is used for assisting in representing the infiltration height, and the scale 8 is used for measuring the infiltration height of the infiltration liquid on the object to be measured 9.
Further, heater 5 comprises a heating plate located between scale 3 and sink 4. A pressure sensor is further arranged in the sealed shell 1 and used for detecting the air pressure in the sealed shell 1. And a temperature sensor is arranged in the water tank 4 and used for detecting the temperature of the immersion liquid.
Further, the testing device also comprises a controller, and the controller is respectively and independently electrically connected with the lifting device 2, the heater 5, the monitor 10, the nitrogen valve and the vacuum pump. The lifting device 2, the heater 5, the monitor 10, the nitrogen valve and the vacuum pump are respectively and independently controlled by the controller, and the lifting and the grabbing of the lifting device 2 are respectively adjusted and controlled; the temperature of the heater 5; the viewing angle of the monitor 10; opening a nitrogen valve; the vacuum degree of the vacuum pump. The test conditions and test operations may be adjusted by the controller.
Further, the testing device further comprises an output device, the output device is respectively and independently electrically connected with the pressure sensor, the temperature sensor and the monitor 10, and the output device is used for outputting the air pressure in the sealed shell 1, the temperature of the immersion fluid and the picture of the monitor 10. The invention can detect and record the air pressure, the temperature of the immersion liquid and the picture of the monitor 10 in real time by arranging the output device, thereby further ensuring the accuracy of the test result.
In another embodiment, the present invention provides a method for performing wettability testing by using the above wettability testing apparatus, where the testing method specifically includes the following steps:
the controller controls the heater 5, the nitrogen valve and the vacuum pump to adjust the air pressure in the sealed shell 1 and the temperature of the immersion liquid;
(II) the lifting device 2 places the object to be measured 9 in the water tank 4 for wettability test, the monitor 10 monitors the wetting process of the object to be measured 9, when the weighing value of the weighing device 3 is stable, the weighing value is recorded, and the wetting height is recorded through the monitor 10 and the graduated scale 8.
In the step (II), the surface of the object to be measured 9 is provided with test paper, the test paper is used for identifying the soaking height, and/or the soaking liquid in the water tank 4 is subjected to dyeing treatment. According to the invention, the test paper is arranged on the surface of the object to be measured 9, or the immersion liquid is dyed, so that the immersion height can be easily identified through the test paper or the dyed immersion height in the immersion process, and the immersion height readings can be further read through the graduated scale 8.
Application example 1
The application example provides a method for performing an electrolyte infiltration test on an electrode plate by using an infiltration testing device provided in a specific embodiment, and the testing method specifically comprises the following steps:
the controller controls the heater 5, the nitrogen valve and the vacuum pump to adjust the air pressure in the sealed shell 1 and the temperature of the immersion liquid;
(II) the electrode slice is placed in the water tank 4 by the lifting device 2 for wettability testing, pH test paper is arranged on the electrode slice and used for identifying the wetting height, electrolyte is injected into the water tank 4, the monitor 10 monitors the wetting process of the object to be measured 9, when the weighing value of the weighing device 3 is stable, the weighing value is recorded, and the wetting height is recorded through the monitor 10 and the graduated scale 8.
Application example 2
The application example provides a method for performing an electrolyte infiltration test on a diaphragm by using the infiltration testing device provided in a specific embodiment, and the testing method specifically comprises the following steps:
the controller controls the heater 5, the nitrogen valve and the vacuum pump to adjust the air pressure in the sealed shell 1 and the temperature of the immersion liquid;
(II) elevating gear 2 is arranged the diaphragm in basin 4 and is carried out the infiltration nature test, and it has electrolyte to pour into in the basin 4, and the infiltration height is conveniently discerned through dyeing to electrolyte, and watch-dog 10 keeps watch on the 9 processes of infiltrating of determinand, and after weighing the numerical value of weighing ware 3 is stable, the numerical value is weighed in the record to it soaks the height to record through watch-dog 10 and scale 8.
In summary, the invention adjusts the vacuum degree of the detection environment and the temperature of the immersion liquid through the heater 5 and the sealing shell 1, thereby realizing the immersion measurement under different conditions, and the influence of human factors is avoided through the combination of the lifting device 2 and the monitor 10, further enhancing the accuracy of the test result, in addition, the immersion process can be recorded in real time according to the monitor 10, the characterization of the immersion process is enhanced, and the invention has the characteristics of simple structure, simple operation, accurate test result and the like.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The device for testing the wettability is characterized by comprising a sealed shell, wherein a scale is arranged in the sealed shell, a water tank filled with a wetting solution is arranged on the scale, and a heater is arranged on the water tank; the water tank is characterized in that a lifting device is arranged above the water tank and used for lifting an object to be measured, a monitor is further arranged in the sealed shell and used for observing conditions in the sealed shell.
2. The testing device of claim 1, wherein the sealed housing is provided with a nitrogen inlet and a vacuum outlet;
preferably, the nitrogen inlet is connected with a nitrogen source through a nitrogen valve;
preferably, the vacuum exhaust port is connected with a vacuum pump.
3. The testing device according to claim 1 or 2, wherein a measurer is arranged at one side of the water tank close to the object to be tested, and is used for measuring the immersion height of the object to be tested, wherein the immersion height is the vertical distance between a climbing point of immersion liquid on the object to be tested and a liquid level;
preferably, the measuring device is a graduated scale.
4. A test unit according to any one of claims 1 to 3 wherein the heater comprises a heated plate located between the scale and the flume.
5. The test device as claimed in any one of claims 1 to 4, wherein a pressure sensor is further disposed in the sealed housing, and the pressure sensor is configured to detect an air pressure in the sealed housing;
preferably, a temperature sensor is arranged in the water tank and used for detecting the temperature of the immersion liquid.
6. The testing device of any one of claims 2-5, further comprising a controller, wherein the controller is independently electrically connected to the lifting device, the heater, the monitor, the nitrogen valve, and the vacuum pump.
7. The testing device of claim 5 or 6, further comprising an output device, wherein the output device is electrically connected to the pressure sensor, the temperature sensor and the monitor, and is configured to output the air pressure, the temperature of the immersion liquid and the monitor image in the sealed housing.
8. A method for performing an wettability test by using the wettability testing apparatus as set forth in any one of claims 1 to 7, wherein the method comprises:
the lifting device places the object to be measured in the water tank until the weighing value of the weighing device is stable, records the weighing value, and observes the infiltration height through the monitor.
9. The testing method of claim 8, wherein the testing method specifically comprises the steps of:
the controller controls the heater, the nitrogen valve and the vacuum pump to adjust the air pressure in the sealed shell and the temperature of the impregnating solution;
(II) the lifting device places the object to be measured in the water tank for wettability test, the monitor monitors the wetting process of the object to be measured, when the weighing value of the weighing device is stable, the weighing value is recorded, the wetting height is recorded through the monitor and the graduated scale, and the output device outputs the measurement result.
10. The testing method according to claim 9, wherein in the step (ii), a testing paper is arranged on the surface of the object to be tested, and the testing paper is used for identifying the soaking height;
preferably, in the step (ii), the soaking solution in the water tank is subjected to dyeing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110031348.7A CN112858103A (en) | 2021-01-11 | 2021-01-11 | Wettability testing device and testing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110031348.7A CN112858103A (en) | 2021-01-11 | 2021-01-11 | Wettability testing device and testing method thereof |
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| CN112858103A true CN112858103A (en) | 2021-05-28 |
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| CN202110031348.7A Pending CN112858103A (en) | 2021-01-11 | 2021-01-11 | Wettability testing device and testing method thereof |
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| CN107895815A (en) * | 2017-10-10 | 2018-04-10 | 多氟多（焦作）新能源科技有限公司 | A kind of electrolyte wetting method of soft bag lithium ionic cell |
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| CN211505102U (en) * | 2019-12-29 | 2020-09-15 | 深圳市德立新材料科技有限公司 | Device for testing wettability of electrolyte of battery diaphragm |
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2021
- 2021-01-11 CN CN202110031348.7A patent/CN112858103A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205543102U (en) * | 2016-02-01 | 2016-08-31 | 宁德时代新能源科技股份有限公司 | Secondary cell soaks degree on -line measuring and changes into integrated device |
| CN106291377A (en) * | 2016-07-28 | 2017-01-04 | 力神动力电池系统有限公司 | A kind of detection method of lithium ion battery absorbent |
| CN106814004A (en) * | 2016-12-16 | 2017-06-09 | 浙江超威创元实业有限公司 | A kind of method for rapidly and efficiently testing pole piece pick up |
| CN107895815A (en) * | 2017-10-10 | 2018-04-10 | 多氟多（焦作）新能源科技有限公司 | A kind of electrolyte wetting method of soft bag lithium ionic cell |
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Application publication date: 20210528 |