CN204028024U - A kind of equipment about lithium battery diaphragm thermal shrinkage test - Google Patents
A kind of equipment about lithium battery diaphragm thermal shrinkage test Download PDFInfo
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- CN204028024U CN204028024U CN201420457306.5U CN201420457306U CN204028024U CN 204028024 U CN204028024 U CN 204028024U CN 201420457306 U CN201420457306 U CN 201420457306U CN 204028024 U CN204028024 U CN 204028024U
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- battery diaphragm
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Abstract
The utility model relates to the technical field of testing apparatus, especially a kind of equipment about lithium battery diaphragm thermal shrinkage test, comprise apparatus body, be embedded with in the operating platform of described apparatus body and put membranous disc for what place test sample lithium battery diaphragm, the described upper surface putting membranous disc is provided with and the lithium battery diaphragm fixture put membranous disc and attract each other, the surrounding of putting membranous disc is provided with scanning mechanism, the guidance panel of apparatus body is provided with the scanning switch and numerical value display screen for display measurement numerical value of to open for gated sweep mechanism or closing.The equipment of this test, accurately can measure length and the width of the front and back lithium battery diaphragm that is heated, calculate the percent thermal shrinkage of lithium battery diaphragm exactly.
Description
Technical field
The utility model relates to the technical field of testing apparatus, especially a kind of equipment about lithium battery diaphragm thermal shrinkage test.
Background technology
Lithium battery is a class by lithium metal or lithium alloy as negative material, organic solution as electrolytical battery.Be widely used at present on portable type electronic product.Compared with traditional aqueous solution battery, lithium battery has higher specific energy, long cycle life and the advantage such as environmentally friendly, is the battery system that a kind of development potentiality is very large.In the structure of lithium battery, barrier film is one of inner assembly of key, and its performance determines the interfacial structure of battery, internal resistance etc., directly affects the capacity of battery, circulation and security performance.The Main Function of barrier film: one is allow electrolyte ion pass through, and two is the positive and negative electrodes separating battery, prevents the two poles of the earth from contacting and being short-circuited.
Now conventional lithium battery diaphragm material is polyolefin porous membrane, it has good insulating, the advantage such as organic solvent-resistant, enough chemistry and electrochemical stability good to electrolyte wettability, but when temperature raises, because the relexation of strand can shrink, the battery positive and negative polarities of subregion do not have septate obstruct, thus causing short circuit, this is extremely dangerous in the routine use of battery.Therefore the mensuration of thermal shrinkage is diaphragm quality detect in one of the most key project.
Now common thermal shrinkage tools for measurement is with steel ruler, measures fixed length and wide barrier film sample, put into baking oven with steel ruler, after being heated and terminating, takes out, then the length of film and wide measured by steel ruler.In whole operating process, the size of film is all measured with steel ruler, and the degree of accuracy of steel ruler is 0.1mm, such length is very large relative to lithium battery diaphragm, and the error of eye-observation film size is very large, when barrier film is assembled in battery, even small scale error is also easy to cause battery short circuit, cause great security incident.Therefore need the degree of accuracy and the accuracy that improve mensuration.
Summary of the invention
The technical problems to be solved in the utility model is: the utility model provides a kind of equipment about lithium battery diaphragm thermal shrinkage test, overcome the problem that test error in prior art is large, abandon steel ruler measuring accuracy not and human eye error two shortcomings, avoid the test error because this two shortcomings cause.
The utility model solves the technical scheme that its technical matters adopts: a kind of equipment about lithium battery diaphragm thermal shrinkage test, comprise apparatus body, be embedded with in the operating platform of described apparatus body and put membranous disc for what place test sample lithium battery diaphragm, the described upper surface putting membranous disc is provided with and the lithium battery diaphragm fixture put membranous disc and attract each other, the surrounding of putting membranous disc is provided with scanning mechanism, the guidance panel of apparatus body is provided with the scanning switch and numerical value display screen for display measurement numerical value of to open for gated sweep mechanism or closing.
Can be sensitive and accurately scan the position of the initial sum end of lithium battery diaphragm for the ease of scanning mechanism, draw length and the width of lithium battery diaphragm, therefore the described color of putting membranous disc is black, the color of described lithium battery diaphragm fixture is white.
Further specifically, described lithium battery diaphragm fixture is made up of magnetic material.
The beneficial effects of the utility model are: a kind of equipment about lithium battery diaphragm thermal shrinkage test of the present utility model, abandon steel ruler measuring accuracy not and human eye error two shortcomings, avoid the test error because this two shortcomings cause, accurately can measure length and the width of the front and back lithium battery diaphragm that is heated, calculate the percent thermal shrinkage of lithium battery diaphragm exactly, improve the precision of lithium battery diaphragm thermal shrinkage test value, effectively prevent the cell safety accident because lithium battery diaphragm thermal shrinkage measuring error causes.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the front elevation of Fig. 1;
Fig. 4 is the side view of Fig. 1.
In figure: 1, apparatus body, 1-1, operating platform, 1-2, guidance panel, 2, put membranous disc, 3, lithium battery diaphragm fixture, 4, scanning mechanism, 5, scanning switch, 6, numerical value display screen.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of equipment about lithium battery diaphragm thermal shrinkage test as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise apparatus body 1, be embedded with in the operating platform 1-1 of apparatus body 1 and put membranous disc 2 for what place test sample lithium battery diaphragm, the color of test sample lithium battery diaphragm be white.
The upper surface putting membranous disc 2 is provided with and the lithium battery diaphragm fixture 3 put membranous disc 2 and attract each other, lithium battery diaphragm fixture 3 is wherein made up of magnetic material, lithium battery diaphragm fixture 3 with put membranous disc 2 and attract each other, lithium battery diaphragm is paved preferably come, so that ensure the length of lithium battery diaphragm and the accuracy of width measurement.
The surrounding of putting membranous disc 2 is provided with scanning mechanism 4, the guidance panel 1-2 of apparatus body 1 is provided with the scanning switch 5 of opening for gated sweep mechanism 4 or closing and the numerical value display screen 6 for display measurement numerical value.The color of putting membranous disc 2 is black, the color of lithium battery diaphragm fixture 3 is white, when the lithium battery diaphragm of white is positioned over putting on membranous disc 2 of black, scanning mechanism 4 utilizes the aberration putting membranous disc 2 and lithium battery diaphragm, can be sensitive and accurately scan the position of the initial sum end of white lithium battery diaphragm, and then draw length and the width of lithium battery diaphragm.
The principle of this testing of equipment lithium battery diaphragm thermal shrinkage is: measure respectively lithium battery diaphragm be heated before length, width and lithium battery diaphragm be heated after length, width, and calculate longitudinal thermal shrinkage of lithium battery diaphragm and horizontal thermal shrinkage exactly according to formula.
Be heated in the baking oven of the 90 DEG C concrete operation step of the longitudinal thermal shrinkage after 2h and horizontal thermal shrinkage of this testing of equipment lithium battery diaphragm is as follows:
One, the sample lithium battery diaphragm of certain size is cut, this sample is placed on and puts in membranous disc 2, and with lithium battery diaphragm fixture 3, sample is fixed, open scanning switch 5, the numerical value of display on record numerical value display screen 6, the length before being heated of lithium battery diaphragm is L
0, width is W
0.
Two, put into by sample in the baking oven of 90 DEG C, after 2h, take out sample, be placed on and put in membranous disc 2, after scanning, the length and width value that record lithium battery diaphragm is new, is respectively L
1and W
1.
Three, the vertical and horizontal thermal shrinkage of lithium battery diaphragm is calculated respectively according to above numerical value:
Be heated in the baking oven of the 120 DEG C concrete operation step of the longitudinal thermal shrinkage after 1h and horizontal thermal shrinkage of this testing of equipment lithium battery diaphragm is as follows:
One, the sample lithium battery diaphragm of certain size is cut, this sample is placed on and puts in membranous disc 2, and with lithium battery diaphragm fixture 3, sample is fixed, open scanning switch 5, the numerical value of display on record numerical value display screen 6, the length before being heated of lithium battery diaphragm is L
0, width is W
0.
Two, put into by sample in the baking oven of 120 DEG C, after 1h, take out sample, be placed on and put in membranous disc 2, after scanning, the length and width value that record lithium battery diaphragm is new, is respectively L
2and W
2.
Three, the vertical and horizontal thermal shrinkage of lithium battery diaphragm is calculated respectively according to above numerical value:
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to right.
Claims (3)
1. the equipment about lithium battery diaphragm thermal shrinkage test, it is characterized in that: comprise apparatus body (1), be embedded with in the operating platform (1-1) of described apparatus body (1) and put membranous disc (2) for what place test sample lithium battery diaphragm, the described upper surface putting membranous disc (2) is provided with and the lithium battery diaphragm fixture (3) put membranous disc (2) and attract each other, the surrounding of putting membranous disc (2) is provided with scanning mechanism (4), the guidance panel (1-2) of apparatus body (1) is provided with the scanning switch (5) and numerical value display screen (6) for display measurement numerical value of to open for gated sweep mechanism (4) or closing.
2. a kind of equipment about lithium battery diaphragm thermal shrinkage test according to claim 1, is characterized in that: the described color of putting membranous disc (2) is black, and the color of described lithium battery diaphragm fixture (3) is white.
3. a kind of equipment about lithium battery diaphragm thermal shrinkage test according to claim 2, is characterized in that: described lithium battery diaphragm fixture (3) is made up of magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457306.5U CN204028024U (en) | 2014-08-13 | 2014-08-13 | A kind of equipment about lithium battery diaphragm thermal shrinkage test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457306.5U CN204028024U (en) | 2014-08-13 | 2014-08-13 | A kind of equipment about lithium battery diaphragm thermal shrinkage test |
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|---|---|
| CN204028024U true CN204028024U (en) | 2014-12-17 |
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| CN201420457306.5U Active CN204028024U (en) | 2014-08-13 | 2014-08-13 | A kind of equipment about lithium battery diaphragm thermal shrinkage test |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509922A (en) * | 2015-11-26 | 2016-04-20 | 东莞市振华新能源科技有限公司 | Testing method for closed pore temperature of battery diaphragm |
| CN105606641A (en) * | 2015-12-29 | 2016-05-25 | 河南惠强新能源材料科技股份有限公司 | Online real-time monitoring system and method for monitoring heat shrinkage rate of lithium battery diaphragm |
| CN106645270A (en) * | 2016-11-24 | 2017-05-10 | 深圳市星源材质科技股份有限公司 | Thermal contraction testing device of lithium-ion battery separator and application method |
| CN106855525A (en) * | 2016-12-27 | 2017-06-16 | 深圳市星源材质科技股份有限公司 | A kind of method for testing barrier film high temperature percent thermal shrinkage |
| CN108562608A (en) * | 2018-03-19 | 2018-09-21 | 上海恩捷新材料科技股份有限公司 | A kind of measuring and calculation method of porous membrane closed pore temperature |
| CN109425633A (en) * | 2017-09-04 | 2019-03-05 | 深圳正峰印刷有限公司 | A kind of heat shrinkage film shrinking percentage test method and test device |
| CN109613049A (en) * | 2018-10-20 | 2019-04-12 | 武汉惠强新能源材料科技有限公司 | Lithium battery diaphragm material thermal contraction performance test device |
| CN110568004A (en) * | 2019-10-14 | 2019-12-13 | 上海第二工业大学 | method for testing thermal shrinkage rate of battery diaphragm |
| CN113075255A (en) * | 2021-03-24 | 2021-07-06 | 湖北亿纬动力有限公司 | Lithium battery diaphragm thermal shrinkage test method and test equipment |
-
2014
- 2014-08-13 CN CN201420457306.5U patent/CN204028024U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509922A (en) * | 2015-11-26 | 2016-04-20 | 东莞市振华新能源科技有限公司 | Testing method for closed pore temperature of battery diaphragm |
| CN105606641A (en) * | 2015-12-29 | 2016-05-25 | 河南惠强新能源材料科技股份有限公司 | Online real-time monitoring system and method for monitoring heat shrinkage rate of lithium battery diaphragm |
| CN105606641B (en) * | 2015-12-29 | 2018-06-19 | 河南惠强新能源材料科技股份有限公司 | A kind of on-line real time monitoring lithium battery diaphragm percent thermal shrinkage system and monitoring method |
| CN106645270A (en) * | 2016-11-24 | 2017-05-10 | 深圳市星源材质科技股份有限公司 | Thermal contraction testing device of lithium-ion battery separator and application method |
| CN106645270B (en) * | 2016-11-24 | 2020-11-24 | 深圳市星源材质科技股份有限公司 | Lithium ion battery diaphragm thermal shrinkage testing device and using method |
| CN106855525A (en) * | 2016-12-27 | 2017-06-16 | 深圳市星源材质科技股份有限公司 | A kind of method for testing barrier film high temperature percent thermal shrinkage |
| CN109425633A (en) * | 2017-09-04 | 2019-03-05 | 深圳正峰印刷有限公司 | A kind of heat shrinkage film shrinking percentage test method and test device |
| CN108562608A (en) * | 2018-03-19 | 2018-09-21 | 上海恩捷新材料科技股份有限公司 | A kind of measuring and calculation method of porous membrane closed pore temperature |
| CN109613049A (en) * | 2018-10-20 | 2019-04-12 | 武汉惠强新能源材料科技有限公司 | Lithium battery diaphragm material thermal contraction performance test device |
| CN110568004A (en) * | 2019-10-14 | 2019-12-13 | 上海第二工业大学 | method for testing thermal shrinkage rate of battery diaphragm |
| CN113075255A (en) * | 2021-03-24 | 2021-07-06 | 湖北亿纬动力有限公司 | Lithium battery diaphragm thermal shrinkage test method and test equipment |
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