CN109870379A - For detecting the detection device and wellability detection method of wellability - Google Patents
For detecting the detection device and wellability detection method of wellability Download PDFInfo
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- CN109870379A CN109870379A CN201910153464.9A CN201910153464A CN109870379A CN 109870379 A CN109870379 A CN 109870379A CN 201910153464 A CN201910153464 A CN 201910153464A CN 109870379 A CN109870379 A CN 109870379A
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Abstract
The present invention relates to battery technology fields, there is provided a kind of detection device and wellability detection method for detecting wellability, the detection device includes the weighing device of the weight for accommodating the liquid container of liquid, for weighing the liquid container and for carrying sample to be detected and the sample being enabled to infiltrate in the intracorporal load sample component of the liquid；The detection device further includes the data acquisition device for collecting and recording the data that the weight of the liquid container changes over time.Technical solution provided by the invention can accurate test sample wetting property, data quantization is accurate.
Description
Technical field
The present invention relates to battery technology field, in particular to a kind of detection device and wellability inspection for detecting wellability
Survey method.
Background technique
Power resources of the battery as electronic product, are used widely, and essential in social life.It is geochemical
The increasingly consumption of the stone energy and therefore caused by environmental problem be also alarm bell that the mankind have beaten energy source use, it is on the one hand necessary
Renewable energy is developed and utilized, the dependence to single fossil energy is reduced, on the other hand fossil energy consumption is generated
Harmful substance carry out control and harmless treatment.For these problems, existing fossil energy is replaced with electric energy and drives automobile,
I.e. motive force of development battery car becomes one of the direction that various countries make great efforts.
The wetting property of pole piece and diaphragm directly affects the interface performance of battery in battery, and pole piece rolls density and electrolysis
The wellability of liquid and the electron conduction of electrode have substantial connection, and the interface performance of electrode difference influences the conduction of ion, and height rolls
Good contact between particle can be improved and improve the electron conduction of electrode, but influence the wellability of electrode, ionic conduction and electronics
Contradiction between conduction causes the irregular electrochemical reaction of electrode surface, leads to the performance degradation of battery.The leaching of material simultaneously
Lubricant nature is also the key factor for influencing battery pole piece wetting property, and the wellability of battery diaphragm equally influences weight to battery performance
Greatly.Therefore it is the key that assessment to the test analysis of the wetting property of battery pole piece and diaphragm, improves battery performance.
Two methods are mainly used at present, one, infusion method: by sample fine work solution, comparison of weighing after a period of time；Two,
Dropping liquid chronometry: being added dropwise to sample surfaces, while timing for a certain amount of solution, assess solution complete wetting into sample when
Between.But two methods, to not fine enough, test method is rough, and consistency is poor, and subjectivity is strong.
Summary of the invention
In view of this, the present invention is directed to propose a kind of detection device and wellability detection method for detecting wellability,
Not fine enough to solve the wetting property test method of battery pole piece and diaphragm in the prior art, subjectivity is strong, leads to test not
Accurate problem.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The present invention provides a kind of for detecting the detection device of wellability, and the detection device includes for accommodating liquid
Liquid container, the weighing device of weight for weighing the liquid container and for carrying sample to be detected and enabling to
The sample infiltration is in the intracorporal load sample component of the liquid；
The detection device further includes the data changed over time for collecting and recording the weight of the liquid container
Data acquisition device.
Further, hurricane globe is covered on the outside of the liquid container.
Further, the load sample component is fixed on the hurricane globe.
Further, the load sample component, which is configured to adjust the sample, is immersed in the intracorporal depth of the liquid.
Further, the detection device further includes the anti-rattler for preventing the weighing device from generating vibration.
Further, the data acquisition device is the computer for being equipped with wellability test macro, the weighing device
It is connect by data line with the computer.
Detection device provided by the invention, the wellability suitable for the pole plate of battery, diaphragm or other components detect, the inspection
Survey device can accurate test sample wetting property, data quantization is accurate.
According to another aspect of the present invention, a kind of wellability detection method is also provided, the wellability detection method includes:
Step 1 carries sample to be detected using load bearing component and the sample part is immersed in liquid；
Step 2, the liquid along the sample rise spread during, the weight for obtaining the liquid becomes at any time
The data of change.
Further, the wellability detection method further include: be arranged in the outside for holding the liquid container of the liquid
Hurricane globe for radix saposhnikoviae；And/or
In the bottom setting for holding the liquid container of the liquid for shockproof anti-rattler.
Further, the step 2 specifically includes: by the way that the weighing below the liquid container for holding the liquid is arranged in
Device measures the weight of the liquid container, and the weight data changed over time that the weighing device is measured is transmitted to number
According to acquisition device.
Further, the data acquisition device is to be connect by data line with the weighing device and be equipped with wellability
The computer of test macro.
The wellability detection method is had with the above-mentioned detection device for detecting wellability compared with the existing technology
Some advantages are identical, and details are not described herein.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies mode and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.
In the accompanying drawings:
Fig. 1 is the structural schematic diagram according to the detection device in an embodiment of the invention for detecting wellability；
Fig. 2 is the capillary phenomenon schematic diagram that liquid is spread along sample；
Fig. 3 is sample wellability test data curve graph.
Description of symbols:
1- hurricane globe；2- load bearing component；3- sample；4- liquid container；5- liquid；6- weighing device；7- immerses part；8-
Data line；9- anti-rattler；10- computer.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can
To be combined with each other.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instruction such as " thickness ", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", " axial direction ", " radial direction ", " circumferential direction "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, " inside and outside " refers to the inside and outside of the profile relative to each component itself.
The present invention provide it is a kind of for detecting the detection device of wellability, as shown in Figure 1, the detection device include be used for
Accommodate the liquid container 4 of liquid 5, the weighing device 6 of weight for weighing the liquid container 4 and to be detected for carrying
Sample 3 simultaneously enables to the sample 3 to infiltrate the load sample component 2 in the liquid 5；The detection device further includes for adopting
Collect and record the data acquisition device for the data that the weight of the liquid container 4 changes over time.
After 3 part of sample to be detected is immersed in liquid 5, according to capillary phenomenon principle, liquid 5 can be climing along sample 3
Prolong rising, as shown in Fig. 2, the liquid level M2 that sample 3 is wet can be higher than the liquid level M1 of liquid 5, in liquid 5 according to hair
During thin phenomenon rises along the sprawling of sample 3, the liquid 5 in liquid container 4 is reduced, and the weight of liquid is transferred to by load sample portion
On the sample 3 that part 2 carries, i.e., the liquid infiltrated in sample 3 is the weight loss (weight of the loss of liquid 5 in liquid container 4
Amount is by 2 load-bearing of load sample component).The value changed over time by the weight that data acquisition device collects and records liquid 5 can obtain
The amount that the liquid of sample 3 changes over time that is immersed in is known, it is possible thereby to calculate wet-out rate of the sample 3 in liquid 5, specifically
It can obtain curve that liquid weight as shown in Figure 3 changes over time (or other modes for indicating data, such as table), and
The wetting velocity that sample 3 can be calculated according to the data indicated in the curve can analyze sample 3 according to the data of calculating
Wetting property.
Wherein, the wetting velocity of sample 3 can be calculated by following two formula:
The liquid infiltration amount of sample 3 is loss amount (m2-m1) × (- 1) of liquid 5
V: sample wet-out rate, unit g/ (mm*s)；
M1: test starts weight (such as Fig. 3) measured by steady rear weighing device 4, unit g；
M2: weight (such as Fig. 3) measured by weighing device 4, unit g after test a period of time；
W: Sample Width, (thickness of multiple samples detected is identical herein, only calculates sample and immerses liquid by unit mm
Width, certainly, W are also possible to sample and are immersed in the intracorporal cross-sectional area of liquid)；
T1: test starts steady rear time (such as Fig. 3), unit s；
T2: time (such as Fig. 3) after test a period of time, unit s；
K: stable testing section, weight and the slope of curve of time (such as Fig. 3) measured by weighing device；
Fig. 3 shows the test curve (A sample and B sample) of two samples, which can accurately calculate by test curve
The wetting property of sample is more preferable.
Detection device provided by the invention is particularly suitable for the wellability detection of the pole plate or diaphragm of battery, the liquid 5
For the electrolyte for infiltrating battery pole plates or diaphragm.Certainly, which can also be used for the wellability detection of other components.
The detection device can accurate test sample wellability, data quantization is accurate.
The detection dress provided by the present invention for detecting wellability is described in further detail below by specific embodiment
It sets.
In the present embodiment, as shown in Figure 1, for collecting and recording the number that the weight of liquid container 4 changes over time
According to data acquisition device be computer 10, weighing device 6 is connect by data line 8 with computer 10.Wherein, computer 10 is pacified
Equipped with wellability test macro, the weighed weight of weighing device 6 is transmitted to computer 10 by data line 8, and passes through infiltration
Property test macro carry out data processing, it can be deduced that then curve graph as shown in Figure 3 calculates wet-out rate, certainly, wellability
Test macro is not limited to handle data by curve graph described in Fig. 3, can also pass through the modes such as table.
Those skilled in the art will also be appreciated that data acquisition device is not limited to computer 10, be also possible to specially
The device for being used to handle wellability data of door manufacture.
In present embodiment, it is preferable that the outside of the liquid container 4 is covered with hurricane globe 1, and hurricane globe 1 can prevent outer
Portion's air-flow flows the influence to test result.
In addition, the load sample component 2 is fixed on the hurricane globe 1, load sample component 2 and sample 3 are carried by hurricane globe 1.
Certainly, load sample component 2 can also be fixed on disengaging on other components of liquid container 4.
In present embodiment, sample 3 to be detected is the pole piece or diaphragm of battery, and the pole piece or diaphragm of battery are piece
Body, therefore, sample 3 can be fixed on load sample component 2 by way of stickup, and load sample component 2 can be by being clamped or pressing from both sides
It the modes such as holds to be fixed on hurricane globe 1.
Preferably, the top of hurricane globe 1 is provided with opening, and load sample component 2 can be the plate-shaped member of the stretching opening,
Plate-shaped member structure is simple and light-weight.It is of course also possible to which setting is capable of fixing load sample component 2 on the inner wall of hurricane globe 1
Fixed structure, the component that can carry sample 3 of load sample component 2 or other forms.
In addition, to adjust the depth that sample immerses liquid according to testing requirement, the load sample component 2 is configured to adjust
The sample 3 is immersed in the depth in the liquid 5.Specifically multiple clampings can be set along short transverse on load sample component 2
Portion or clamping part, being fixed on hurricane globe 1 by the clamping portion or clamping part that make different location can be realized the depth tune of sample 3
It is whole.
In present embodiment, the detection device further includes the anti-rattler for preventing the weighing device 6 from generating vibration
9, as shown in figure 1, the bottom of weighing device 6 is arranged in anti-rattler 9, helps to prevent the vibration of weighing device 6 from influencing test effect.
According to another aspect of the present invention, a kind of wellability detection method is also provided, the wellability detection method includes:
Step 1 is carried sample 3 to be detected using load bearing component 2 and 3 part of sample is made to be immersed in liquid container
In 4 liquid 5；
Step 2, the liquid 5 along the sample 3 rise spread during, obtain the weight of the liquid 5 at any time
Between the data that change.
According to capillarity principle, after being partially immersed in liquid 5, liquid can be spread along sample 3 to be risen sample 3,
The liquid 5 in liquid container 4 can be reduced simultaneously, and the amount of the reduction is exactly the amount for the liquid being immersed in sample 3, therefore obtain liquid
The data that the weight of body 5 changes with time can learn that liquid is immersed in the amount that sample 3 changes over time, to obtain liquid
Wetting velocity in sample 3, and can the wetting property thus to sample 3 analyze.
In present embodiment, the step 2 is specifically included: by being arranged in below the liquid container 4 for holding the liquid 5
Weighing device 6 measure the weight of the liquid container 4, and the weight data is transmitted to data acquisition device and is located
Reason.
Specifically, the data acquisition device is to be connect by data line 8 with the weighing device 6 and be equipped with wellability
The computer 10 of test macro.Weight measured by weighing device 6 is transmitted to computer 10 by data line 8, and passes through infiltration
Property test macro carry out data processing, it can be deduced that curve graph as shown in Figure 3, may then pass through the data calculate infiltration speed
Rate.
In the preferred embodiment, the wellability detection method further include: in the liquid container 4 for holding the liquid 5
Hurricane globe 1 of the outside setting for radix saposhnikoviae, to prevent outer gas stream from flowing influence to test result by hurricane globe 1.
In addition, can also be in the bottom setting for holding the liquid container 4 of the liquid 5 for shockproof anti-rattler 9, to prevent
The vibration of weighing device 6 influences test effect.
The wellability detection method can specifically be implemented by being used to detect the detection device of wellability as described above,
Its specific implementation process is following (referring to Fig. 1):
Step 1: sample 3 to be detected to be fabricated to certain width W；
Step 2: sample 3 is fixed on load sample component 2；
Step 3: experimental liquid is injected in liquid container 4, and liquid container 4 is placed on weighing device 6；
Step 4: covering upper hurricane globe 1, load sample component 2 is adjusted；
Step 5: the weight of weighing device 6 is zeroed；
Step 6: starting computer 10, starts wellability test macro, data acquisition starts；
Step 8: sample 3 is immersed in solution, the depth L of part 7 is immersed；(this step is rapidly completed)
Step 9: test stops data acquisition after a certain period of time；
Step 10: by wellability test processes data, and analyze sample absorbency.
The foregoing is merely better embodiments of the invention, are not intended to limit the invention, all of the invention
Within spirit and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of for detecting the detection device of wellability, which is characterized in that the detection device includes for accommodating liquid (5)
Liquid container (4), weight for weighing the liquid container (4) weighing device (6) and for carrying sample to be detected
Product (3) simultaneously enable to the sample (3) to infiltrate the load sample component (2) in the liquid (5)；
The detection device further includes the number for collecting and recording the data that the weight of the liquid container (4) changes over time
According to acquisition device.
2. detection device according to claim 1, which is characterized in that be covered with hurricane globe on the outside of the liquid container (4)
(1)。
3. detection device according to claim 2, which is characterized in that the load sample component (2) is fixed on the hurricane globe
(1) on.
4. detection device according to claim 3, which is characterized in that the load sample component (2) is configured to adjust institute
State the depth that sample (3) is immersed in the liquid (5).
5. detection device according to claim 1, which is characterized in that the detection device further includes for preventing the title
The anti-rattler (9) that (6) generate vibration is set in refitting.
6. detection device described in any one of -5 according to claim 1, which is characterized in that the data acquisition device is peace
Computer (10) equipped with wellability test macro, the weighing device (6) are connected by data line (8) and the computer (10)
It connects.
7. a kind of wellability detection method, which is characterized in that the wellability detection method includes:
Step 1 carries sample (3) to be detected using load bearing component (2) and the sample (3) is made partially to be immersed in liquid
(5) in；
Step 2, during the liquid (5) rises along the sample (3) and spreads, obtain the weight of the liquid (5) with
The data of time change.
8. wellability detection method according to claim 7, which is characterized in that the wellability detection method further include:
Hurricane globe (1) of the setting for radix saposhnikoviae in the outside for the liquid container (4) for holding the liquid (5)；And/or
In the bottom for the liquid container (4) for holding the liquid (5), setting is used for shockproof anti-rattler (9).
9. wellability detection method according to claim 7 or 8, which is characterized in that the step 2 specifically includes: passing through
The weighing device (6) being arranged below the liquid container (4) for holding the liquid (5) measures the weight of the liquid container (4),
And the weight data changed over time that the weighing device (6) measure is transmitted to data acquisition device.
10. wellability detection method according to claim 9, which is characterized in that the data acquisition device is to pass through number
The computer (10) of wellability test macro is connect and is equipped with the weighing device (6) according to line (8).
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Cited By (7)
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| CN111257152A (en) * | 2020-01-20 | 2020-06-09 | 中国电子科技集团公司第十六研究所 | Device and method for testing liquid absorption performance of sintered liquid absorption core of temperature-equalizing plate |
| CN111337390A (en) * | 2020-04-08 | 2020-06-26 | 河南华瑞高新材料有限公司 | Device and method for verifying wettability of lithium ion battery electrolyte |
| CN112858079A (en) * | 2021-01-25 | 2021-05-28 | 焦作钧菲津材科技有限公司 | Method for detecting infiltration performance of asphalt for carbon |
| CN112858103A (en) * | 2021-01-11 | 2021-05-28 | 湖北亿纬动力有限公司 | Wettability testing device and testing method thereof |
| CN113740195A (en) * | 2021-08-03 | 2021-12-03 | 蜂巢能源科技有限公司 | Powder wettability evaluation method and application thereof |
| CN114252363A (en) * | 2021-12-09 | 2022-03-29 | 上海兰钧新能源科技有限公司 | Method for measuring pole piece infiltration liquid absorption amount |
| CN116008117A (en) * | 2023-03-28 | 2023-04-25 | 宁德时代新能源科技股份有限公司 | Battery infiltration test method, test equipment, device and computer equipment |
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Application publication date: 20190611 |