CN105784563B - A method of measurement pole piece or diaphragm sepage rate and liquid-keeping property - Google Patents
A method of measurement pole piece or diaphragm sepage rate and liquid-keeping property Download PDFInfo
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- CN105784563B CN105784563B CN201610154030.7A CN201610154030A CN105784563B CN 105784563 B CN105784563 B CN 105784563B CN 201610154030 A CN201610154030 A CN 201610154030A CN 105784563 B CN105784563 B CN 105784563B
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- liquid
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- electrolyte
- keeping property
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005259 measurement Methods 0.000 title claims description 14
- 239000003792 electrolyte Substances 0.000 claims abstract description 47
- 238000001291 vacuum drying Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 6
- 230000008595 infiltration Effects 0.000 abstract description 12
- 238000001764 infiltration Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0813—Measuring intrusion, e.g. of mercury
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/086—Investigating permeability, pore-volume, or surface area of porous materials of films, membranes or pellicules
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- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The present invention is suitable for field of measuring technique, discloses a kind of method for measuring pole piece or diaphragm sepage rate and liquid-keeping property, comprising the following steps: standard sample is made in pole piece or diaphragm；It after the sample is put into vacuum drying oven baking, moves into the box of sealing, and immerses the sample holding and horizontal plane, lower end in electrolyte, upper end connects tension tester；It records the tension tester upper pulling force reading to change with time, obtains the sample to the sepage rate and liquid-keeping property of the electrolyte by the data of record.The present invention can characterize the infiltration to electrolyte of different positive and negative pole materials and diaphragm, liquid-keeping property, the caused infiltration to electrolyte of the parameters such as same material difference surface density, compacting, liquid-keeping property difference can also be tested, infiltration, the liquid-keeping property difference of different electrolytes can also be characterized.
Description
Technical field
The invention belongs to field of measuring technique more particularly to a kind of measurement pole pieces or diaphragm sepage rate and liquid-keeping property
Method.
Background technique
In the prior art, the method for measuring pole piece or diaphragm sepage rate only takes a small amount of electrolyte, drop in pole piece or
On person's diaphragm, see that liquid is absorbed the required time, this method is rough, and cannot measure guarantor's liquid of pole piece or diaphragm simultaneously
Amount.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of measurement pole piece or diaphragm sepage speed are provided
The method of rate and liquid-keeping property can do dynamic analysis at any time to sepage process, while measure guarantor's liquid measure.
The technical scheme is that providing a kind of method for measuring pole piece or diaphragm sepage rate and liquid-keeping property, packet
Include following steps:
Standard sample is made in pole piece or diaphragm；
It after the sample is put into vacuum drying oven baking, moves into the box of sealing, and keeps the sample and level
Face is vertical, and lower end is immersed in electrolyte, and upper end connects tension tester；
It records the tension tester upper pulling force reading to change with time, obtains the sample pair by the data of record
The sepage rate and liquid-keeping property of the electrolyte.
Further, the data by record obtain the sample to the sepage rate of the electrolyte and protect liquid energy
Power specifically includes the following contents:
If in t1In time, the pulling force of the tension tester is increased speed fastly, then the sample is to the electrolyte
Wellability is good；
If testing t2After time, the pulling force increase total amount of the tension tester is more, then the sample is to the electrolyte
Liquid-keeping property it is strong.
Preferably, the sample is cuboid.
Preferably, the sample is put into 85 DEG C of vacuum drying ovens and toasts 4h.
Preferably, the t1Time is 5min.
Preferably, the t2Time is 30min.
It further, further include the face for selecting the pole piece or diaphragm before by pole piece, perhaps sample is made in diaphragm
The type of density and compactness and the electrolyte.
The method for implementing a kind of measurement pole piece of the invention or diaphragm sepage rate and liquid-keeping property has below beneficial to effect
Fruit: its box by the way that sample baking to be put into sealing later, lower end are immersed in electrolyte, and upper end connects tension tester, electricity
It solves liquid to penetrate into pole piece or diaphragm, pole piece or diaphragm example weight is caused to increase, thus show that pulling force becomes on tension tester
Greatly, record tension tester upper pulling force reading changes with time, so that it may characterize sample to the wellability of electrolyte and protect liquid
Ability；In addition, the infiltration to electrolyte of different positive and negative pole materials and diaphragm, liquid-keeping property can be characterized using the method, it can also
The caused infiltration to electrolyte of the parameters such as same material difference surface density, compacting, liquid-keeping property difference are tested, can also be characterized
The infiltration of different electrolytes, liquid-keeping property difference.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the method flow diagram of measurement pole piece provided in an embodiment of the present invention or diaphragm sepage rate and liquid-keeping property.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, the method master of measurement pole piece provided in an embodiment of the present invention or diaphragm sepage rate and liquid-keeping property
Want the following steps are included:
S1, standard sample is made in pole piece or diaphragm；
S2, it after sample to be put into vacuum drying oven baking, moves into the box of sealing, and sample is made to keep hanging down with horizontal plane
Directly, lower end is immersed in electrolyte, and upper end connects tension tester；
S3, record tension tester upper pulling force reading change with time, and obtain sample to described by the data of record
The sepage rate and liquid-keeping property of electrolyte.
In above-mentioned steps S1, standard sample is made in pole piece or diaphragm, to be convenient for measuring.The shape of standard sample and
Depending on size can be by actual demand.Preferably, in one embodiment of the invention, cuboid is made in standard sample.
In above-mentioned steps S2, it is for drying sample, to prevent sample interior that sample, which is put into baking in vacuum drying oven,
Moisture influence measurement result.It moves into the box of sealing and measures again, it can influence to avoid extraneous factor to measurement.Sample
Product are kept and horizontal plane, to accurately measure sepage rate and liquid-keeping property.The lower end of sample is immersed in electrolyte, sample
Upper end connect tension tester, electrolyte penetrates into sample, causes pole piece or diaphragm example weight to increase, thus tensile test
Show that pulling force becomes larger on instrument.Wherein, the depth that sample immerses is unrestricted, determines according to actual needs.
Preferably, in one embodiment of the invention, sample is put into 85 DEG C of vacuum drying oven and toasts 4h.It can manage
Solution, in other embodiments of the invention, the temperature of vacuum drying oven and the time of baking can according to the actual situation really
It is fixed.
Further, in above-mentioned steps S3, obtain sample to the sepage rate of the electrolyte by the data of record
And liquid-keeping property specifically includes the following contents:
If in t1In time, the pulling force of tension tester is increased speed fastly, then sample is good to the wellability of electrolyte；
If testing t2After time, the pulling force increase total amount of tension tester is more, then guarantor liquid energy of the sample to the electrolyte
Power is strong.
Preferably, in one embodiment of the invention, as in 5 minutes, the sample imbibition that pulling force is increased speed fast is fast,
Then sample is good to electrolyte wellability；For another example proceed to the longer time in test, when such as 30 minutes, it is more that pulling force increases total amount
The electrolyte that is absorbed of sample it is more, then sample is strong to the liquid-keeping property of electrolyte；Or different electrolyte is used same
Kind sample test, may compare the wellability and liquid-keeping property of different electrolytes.Alternatively, it is also possible to specifically be calculated according to the data of record
Sepage rate and liquid-keeping property of the sample to electrolyte out.
Further, using the method can characterize different positive and negative pole materials and diaphragm to the infiltration of electrolyte, protect liquid energy
Power can also test the caused infiltration to electrolyte of the parameters such as same material difference surface density, compacting, liquid-keeping property difference, also
Infiltration, the liquid-keeping property difference of different electrolytes can be characterized.Specifically, before sample is made in pole piece or diaphragm, also
The type of surface density and compactness and electrolyte including selection pole piece or diaphragm, and then different samples pair can be measured
The sepage rate and liquid-keeping property of same electrolyte and same sample are to the sepage rates of different electrolytes and protect liquid energy
Power.
In conclusion the method for the measurement pole piece or diaphragm sepage rate and liquid-keeping property of the embodiment of the present invention, passes through
Sample baking is put into the box of sealing later, lower end is immersed in electrolyte, and upper end connects tension tester, and electrolyte penetrates into pole
In piece or diaphragm, pole piece or diaphragm example weight is caused to increase, thus show that pulling force becomes larger on tension tester, records pulling force
Tester upper pulling force reading changes with time, so that it may characterize sample to the wellability and liquid-keeping property of electrolyte；In addition, sharp
The infiltration to electrolyte of different positive and negative pole materials and diaphragm, liquid-keeping property can be characterized with the method, same material can also be tested
Infiltration, liquid-keeping property difference caused by the parameters such as different surface densities, compacting to electrolyte, can also characterize different electrolytes
Infiltration, liquid-keeping property difference.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of method of measurement pole piece or diaphragm sepage rate and liquid-keeping property, which comprises the following steps:
Select the surface density and compactness of pole piece or diaphragm and the type of electrolyte；
Standard sample is made in pole piece or diaphragm, the standard sample is in cuboid；
It after the sample is put into vacuum drying oven baking, moves into the box of sealing, and the sample is made to keep hanging down with horizontal plane
Directly, lower end is immersed in electrolyte, and upper end connects tension tester；
It records the tension tester upper pulling force reading to change with time, obtains the sample to described by the data of record
The sepage rate and liquid-keeping property of electrolyte, specifically include the following contents:
If in t1In time, the pulling force of the tension tester is increased speed fastly, then wellability of the sample to the electrolyte
It is good；
If testing t2After time, the pulling force increase total amount of the tension tester is more, then guarantor liquid of the sample to the electrolyte
Ability is strong；
Wherein, t2Greater than t1。
2. the method for measurement pole piece or diaphragm sepage rate and liquid-keeping property as described in claim 1, which is characterized in that by institute
It states sample and is put into 85 DEG C of vacuum drying ovens and toast 4h.
3. the method for measurement pole piece or diaphragm sepage rate and liquid-keeping property as described in claim 1, which is characterized in that described
t1Time is 5min.
4. the method for measurement pole piece or diaphragm sepage rate and liquid-keeping property as described in claim 1, which is characterized in that described
t2Time is 30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154030.7A CN105784563B (en) | 2016-03-17 | 2016-03-17 | A method of measurement pole piece or diaphragm sepage rate and liquid-keeping property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154030.7A CN105784563B (en) | 2016-03-17 | 2016-03-17 | A method of measurement pole piece or diaphragm sepage rate and liquid-keeping property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105784563A CN105784563A (en) | 2016-07-20 |
| CN105784563B true CN105784563B (en) | 2019-08-09 |
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| CN201610154030.7A Active CN105784563B (en) | 2016-03-17 | 2016-03-17 | A method of measurement pole piece or diaphragm sepage rate and liquid-keeping property |
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| CN (1) | CN105784563B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478546A (en) * | 2017-07-10 | 2017-12-15 | 合肥国轩高科动力能源有限公司 | A kind of method of lithium battery diaphragm wellability test |
| CN110672470B (en) * | 2018-07-03 | 2021-11-09 | 宁德时代新能源科技股份有限公司 | Pole piece infiltration testing method and device of secondary battery |
| CN111562193A (en) * | 2020-05-14 | 2020-08-21 | 惠州亿纬锂能股份有限公司 | Evaluation method for liquid retention effect of material for lithium ion battery |
| CN111879651A (en) * | 2020-06-28 | 2020-11-03 | 深圳市星源材质科技股份有限公司 | Method for testing liquid absorption rate and liquid retention rate of diaphragm |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217351A (en) * | 2013-03-27 | 2013-07-24 | 合肥国轩高科动力能源股份公司 | Device and method for measuring imbibition capability of film object |
| CN104062199A (en) * | 2014-07-10 | 2014-09-24 | 深圳市星源材质科技股份有限公司 | Test method and test device for liquid absorption rate of macromolecular microporous diaphragm |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5970783A (en) * | 1998-02-19 | 1999-10-26 | Weyerhaeuser Company | Pulp chip fissure test device and method for estimating screened pulp yield |
| CA2342119A1 (en) * | 2001-03-23 | 2002-09-23 | Universite Du Quebec A Montreal (Uqam) | Automation of the water absorption test in porous materials |
| CN102901688A (en) * | 2012-10-15 | 2013-01-30 | 新乡市中科科技有限公司 | Method for detecting liquid absorption rate of battery diaphragm |
| CN103512821A (en) * | 2013-09-13 | 2014-01-15 | 深圳市星源材质科技有限公司 | Method for testing liquid absorption rate of battery diaphragm |
| CN103926185B (en) * | 2014-04-24 | 2016-03-02 | 合肥国轩高科动力能源有限公司 | The pick-up unit of lithium ion battery separator pick up, detection method |
-
2016
- 2016-03-17 CN CN201610154030.7A patent/CN105784563B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217351A (en) * | 2013-03-27 | 2013-07-24 | 合肥国轩高科动力能源股份公司 | Device and method for measuring imbibition capability of film object |
| CN104062199A (en) * | 2014-07-10 | 2014-09-24 | 深圳市星源材质科技股份有限公司 | Test method and test device for liquid absorption rate of macromolecular microporous diaphragm |
Non-Patent Citations (1)
| Title |
|---|
| Separator technologies for lithium-ion batteries;Xiaosong Huang;《JOURNAL OF SOLID STATE ELECTROCHEMISTRY》;20101230;652页第2栏 * |
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| CN105784563A (en) | 2016-07-20 |
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