CN208818795U - The test device of lithium battery diaphragm withstand voltage value - Google Patents
The test device of lithium battery diaphragm withstand voltage value Download PDFInfo
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- CN208818795U CN208818795U CN201821520858.0U CN201821520858U CN208818795U CN 208818795 U CN208818795 U CN 208818795U CN 201821520858 U CN201821520858 U CN 201821520858U CN 208818795 U CN208818795 U CN 208818795U
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- lithium battery
- battery diaphragm
- voltage value
- withstand voltage
- test device
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Abstract
The utility model relates to a kind of test devices of lithium battery diaphragm withstand voltage value comprising: proof voltage tester, the electrode plate, electrode bar and the conductive film that are electrical connected with the proof voltage tester；Wherein the proof voltage tester is provided with DC power supply, is suitable for carrying out voltage output to the electrode plate, electrode bar；The side of the conductive film is suitable for being in contact with the electrode plate, and after lithium battery diaphragm to be measured is placed on the other side of the conductive film, the proof voltage tester contacts the lithium battery diaphragm to be measured by the electrode bar to measure the withstand voltage value of contact point；The lithium battery diaphragm to be measured of conductive diaphragm on electrode plate is placed in by electrode bar contact, the withstand voltage value of lithium battery diaphragm regional area to be measured is obtained by proof voltage tester to realize, greatly reduce test area, it can be achieved to carry out local test to lithium battery diaphragm, be pin-pointed to the withstand voltage value situation of smaller area.
Description
Technical field
The utility model relates to a kind of lithium battery diaphragm withstand voltage value performance characterization field more particularly to a kind of lithium battery every
The test device of film withstand voltage value.
Background technique
With the fast development of information age, more stringent requirements are proposed to electronic product by people, such as mobile phone, tablet computer
The super long standby time time of equal electronic equipments, the green energy resources such as electronic bridge vehicle, Electric Transit, hybrid vehicle are in communications and transportation
It is universal.The lithium battery for having high-energy density receives more and more attention.But it is especially electric with this bring safety problem
Pond kindling, or even explosion, should more pay attention to.Diaphragm is between lithium battery positive and negative electrode, on the one hand by the positive and negative electrode of battery every
It opens, prevents positive and negative electrode from directly contacting and short-circuit；On the other hand, during charging and discharging lithium battery, allow electrolyte in lithium from
Son passes through, and realizes fast charging and discharging.Therefore, the superiority and inferiority of membrane properties directly affects the superiority and inferiority of lithium battery performance, especially lithium electricity
The security performance of pond entirety.In the lithium battery manufacturing, manufacturer can be by anode, lithium battery diaphragm and battery cathode
After winding, the short circuit ratio of lithium battery diaphragm is tested in battery positive and negative electrode load voltage.If the withstand voltage value of diaphragm is too small,
Breakdown in testing, lithium battery will cannot be used continuously, and cost is caused to waste.
Therefore, need to develop a kind of test device of lithium battery diaphragm withstand voltage value, to solve to the resistance to electricity of lithium battery diaphragm
The problem of pressure value is tested.
Utility model content
The purpose of the utility model is to provide a kind of test devices of lithium battery diaphragm withstand voltage value, to realize to lithium battery
Regional area carries out the function of withstand voltage value test on diaphragm.
In order to solve the above-mentioned technical problem, the utility model provides a kind of test dress of lithium battery diaphragm withstand voltage value
It sets comprising: proof voltage tester, the electrode plate, electrode bar and the conductive thin that are electrical connected with the proof voltage tester
Film；Wherein the proof voltage tester is provided with DC power supply, is suitable for carrying out voltage output to the electrode plate, electrode bar；
The side of the conductive film is suitable for being in contact with the electrode plate, and lithium battery diaphragm to be measured is placed on the conductive film
After on the other side, the proof voltage tester contacts the lithium battery diaphragm to be measured by the electrode bar to measure contact point
Withstand voltage value.
Further, it is coated with elastic fluid in the conductive film, presses the electrode bar and contacts the lithium battery to be measured
Diaphragm；The lithium battery diaphragm to be measured is suitable for being in close contact by the elastic fluid and the conductive film, and the conduction
Film is close to the electrode plate.
Further, the elastic fluid is suitable for using silicagel pad or foam-rubber cushion.
Further, the electrode plate, electrode bar are all made of metal material with good conductivity.
Further, the DC power supply operating voltage is 0~6KV, and voltage is increased speed as 0~300V/s, breakdown current
For 0.1~1mA.
Further, the length of the electrode plate is 100~500mm, and width is 100~500mm, with a thickness of 1~5mm；With
And the basal diameter of the electrode bar is 10~30mm, is highly 50~200mm.
Further, the equal surface of the electrode plate, electrode bar is smooth, not damaged, and surface roughness≤2.
Further, the conductive film is suitable for using masking foil or aluminium-foil paper.
Further, the elastic fluid with a thickness of 1~3mm, shore hardness is 10~50.
Further, the electrode plate is suitable for being fixed on poly (methyl methacrylate) plate.
The utility model has the beneficial effects that the utility model is placed in conductive diaphragm on electrode plate by electrode bar contact
Lithium battery diaphragm to be measured, with realize the withstand voltage value of lithium battery diaphragm regional area to be measured is obtained by proof voltage tester, greatly
Test area is reduced greatly, it can be achieved that carrying out local test to lithium battery diaphragm, is pin-pointed to the withstand voltage value of smaller area
Situation.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structure chart of the test device of the utility model lithium battery diaphragm withstand voltage value；
Fig. 2 is the control block diagram of the DC power supply of the test device of the utility model lithium battery diaphragm withstand voltage value；
Fig. 3 is the sectional view of the conductive film of the test device of the utility model lithium battery diaphragm withstand voltage value.
In figure: proof voltage tester 1, electrode plate 2, electrode bar 3, conductive film 4, elastic fluid 401, lithium battery to be measured every
Film 5.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Embodiment 1
Fig. 1 is the structure chart of the test device of the utility model lithium battery diaphragm withstand voltage value；
Fig. 2 is the control block diagram of the DC power supply of the test device of the utility model lithium battery diaphragm withstand voltage value.
In the present embodiment, as shown in Figure 1 and Figure 2, the utility model provides a kind of survey of lithium battery diaphragm withstand voltage value
Trial assembly is set comprising: proof voltage tester 1, the electrode plate 2, the electrode bar 3 that are electrical connected with the proof voltage tester 1, and
Conductive film 4；Wherein the proof voltage tester 1 is provided with DC power supply, is suitable for carrying out the electrode plate 2, electrode bar 3
Voltage output；The side of the conductive film 4 is suitable for being in contact with the electrode plate 2, and lithium battery diaphragm to be measured 5 is placed on institute
After stating on the other side of conductive film 4, the proof voltage tester 1 by the electrode bar 3 contact the lithium battery to be measured every
Film 5 is to measure the withstand voltage value of contact point.
In the present embodiment, proof voltage tester 1 can use but be not limited to SLK2670A proof voltage tester 1.
Specifically, direct current power source voltage output end two transfer wires of extraction, a transfer wire connection electrode plate 2, separately
A piece transfer wire connection electrode stick 3.
In the present embodiment, the present embodiment contacts the lithium to be measured electricity for being placed in conductive diaphragm on electrode plate 2 by electrode bar 3
Pond diaphragm 5 obtains the withstand voltage value of 5 regional area of lithium battery diaphragm to be measured by proof voltage tester 1 to realize, greatly reduces
Test area is pin-pointed to the withstand voltage value situation of smaller area, it can be achieved that lithium battery diaphragm progress local test.
Fig. 3 is the sectional view of the conductive film 4 of the test device of the utility model lithium battery diaphragm withstand voltage value.
In order to eliminate because 2 flatness of electrode plate or membrane thicknesses it is uneven caused by poor contact, as shown in figure 3, institute
It states and is coated with elastic fluid 401 in conductive film 4, press the electrode bar 3 and contact the lithium battery diaphragm to be measured 5；It is described to
Lithium battery diaphragm 5 is surveyed to be suitable for being in close contact by the elastic fluid 401 and the conductive film 4, and the conductive film 4 with
The electrode plate 2 is close to.
In the present embodiment, by the high resiliency of elastic fluid 401, can further eliminate because 2 flatness of electrode plate or every
Poor contact caused by non-uniform film thickness is even improves the accuracy of lithium battery diaphragm withstand voltage value.
In order to make elastic fluid 401 have good elasticity, the elastic fluid 401 is suitable for using silicagel pad or sponge
Pad.
In order to improve the accuracy of lithium battery diaphragm withstand voltage value, the electrode plate 2, electrode bar 3 are all made of electric conductivity
Good metal material.
In order to test lithium battery diaphragm withstand voltage value, the DC power supply operating voltage is 0~6KV, and voltage is increased speed
For 0~300V/s, breakdown current is 0.1~1mA.
In the present embodiment, specifically, the length of the electrode plate 2 is 100~500mm, width is 100~500mm, thick
Degree is 1~5mm；And the basal diameter of the electrode bar 3 is 10~30mm, is highly 50~200mm.
In the present embodiment, specifically, the electrode plate 2, the equal surface of electrode bar 3 are smooth, not damaged, and surface is thick
Rugosity≤2.
In order to make conductive film 4 have good electric conductivity, the conductive film 4 is suitable for using masking foil or aluminium-foil paper.
In the present embodiment, specifically, the elastic fluid 401 with a thickness of 1~3mm, shore hardness is 10~50.
In the present embodiment, specifically, the electrode plate 2 is suitable for being fixed on poly (methyl methacrylate) plate.
It in the present embodiment, include as follows using the test device of lithium battery diaphragm withstand voltage value provided by the present embodiment
Step:
Cut the diaphragm that size is equal to or slightly less than electrode plate 2；
Setting DC power supply operating voltage is 0~6KV, and voltage is increased speed as 300V/s, breakdown current 0.5mA；
Transfer wire and electrode plate 2 and electrode bar 3 are attached；
Electrode plate 2 is placed on poly (methyl methacrylate) plate, the conductive film 4 for being coated with elastic fluid 401 is placed in electrode
Film to be measured is placed in 4 top of conductive film by the top of plate 2；
Electrode bar 3 is placed on region to be measured, powers on switch, voltage increases according to setting speed；
In voltage increase process, proof voltage tester 1 can monitor the electric current by diaphragm automatically, when electric current reaches setting
Breakdown current, proof voltage tester 1 automatically power off, and voltage value at this time is the resistance to of 5 test zone of lithium battery diaphragm to be measured
Voltage value；
Electrode bar 3 is moved to next region to be measured, is repeated the above steps, multiple points is tested, lithium battery to be measured can be acquired
Diaphragm 5 is averaged withstand voltage value.
According to above-mentioned test method, 5 withstand voltage value of lithium battery diaphragm to be measured of 18 μ m thick of single layer is tested, to
It surveys to divide from top to bottom on lithium battery diaphragm 5 and has A, B, C, D, E, F, G row, be from left to right divided into 1,2,3,4,5,6,7,8,9
Column, test result is as follows for gained:
1 withstand voltage value test result table of table
In conclusion the present embodiment by electrode bar contact be placed in the lithium battery to be measured of conductive diaphragm on electrode plate every
Film obtains the withstand voltage value of lithium battery diaphragm regional area to be measured by proof voltage tester to realize, greatly reduces test surfaces
Product is pin-pointed to the withstand voltage value situation of smaller area, it can be achieved that lithium battery diaphragm progress local test；Table on electrode plate
The conductive film that face tiling is coated with elastic fluid can be eliminated further using the high resiliency of elastic fluid because electrode plate is smooth
Poor contact caused by degree or membrane thicknesses are uneven, improves the accuracy of lithium battery diaphragm withstand voltage value.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (10)
1. a kind of test device of lithium battery diaphragm withstand voltage value characterized by comprising
Proof voltage tester, electrode plate, electrode bar and the conductive film being electrical connected with the proof voltage tester；Wherein
The proof voltage tester is provided with DC power supply, is suitable for carrying out voltage output to the electrode plate, electrode bar；
The side of the conductive film is suitable for being in contact with the electrode plate, and lithium battery diaphragm to be measured is placed on the conductive thin
After on the other side of film, the proof voltage tester contacts the lithium battery diaphragm to be measured by the electrode bar to measure contact
The withstand voltage value of point.
2. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
It is coated with elastic fluid in the conductive film, the electrode bar is pressed and contacts the lithium battery diaphragm to be measured；
The lithium battery diaphragm to be measured is suitable for being in close contact by the elastic fluid and the conductive film, and the conductive thin
Film is close to the electrode plate.
3. the test device of lithium battery diaphragm withstand voltage value as claimed in claim 2, which is characterized in that
The elastic fluid is suitable for using silicagel pad or foam-rubber cushion.
4. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
The electrode plate, electrode bar are all made of metal material with good conductivity.
5. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
The DC power supply operating voltage is 0~6KV, and voltage is increased speed as 0~300V/s, and breakdown current is 0.1~1mA.
6. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
The length of the electrode plate is 100~500mm, and width is 100~500mm, with a thickness of 1~5mm；And
The basal diameter of the electrode bar is 10~30mm, is highly 50~200mm.
7. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
The equal surface of the electrode plate, electrode bar is smooth, not damaged, and surface roughness≤2.
8. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
The conductive film is suitable for using masking foil or aluminium-foil paper.
9. the test device of lithium battery diaphragm withstand voltage value as claimed in claim 2, which is characterized in that
The elastic fluid with a thickness of 1~3mm, shore hardness is 10~50.
10. the test device of lithium battery diaphragm withstand voltage value as described in claim 1, which is characterized in that
The electrode plate is suitable for being fixed on poly (methyl methacrylate) plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821520858.0U CN208818795U (en) | 2018-09-17 | 2018-09-17 | The test device of lithium battery diaphragm withstand voltage value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821520858.0U CN208818795U (en) | 2018-09-17 | 2018-09-17 | The test device of lithium battery diaphragm withstand voltage value |
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| CN208818795U true CN208818795U (en) | 2019-05-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707965A (en) * | 2020-05-26 | 2020-09-25 | 欣旺达电动汽车电池有限公司 | Lithium ion battery short circuit test method |
| CN111812470A (en) * | 2020-07-21 | 2020-10-23 | 上海恩捷新材料科技有限公司 | Method for testing continuous voltage resistance of film |
-
2018
- 2018-09-17 CN CN201821520858.0U patent/CN208818795U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707965A (en) * | 2020-05-26 | 2020-09-25 | 欣旺达电动汽车电池有限公司 | Lithium ion battery short circuit test method |
| CN111707965B (en) * | 2020-05-26 | 2022-08-09 | 欣旺达电动汽车电池有限公司 | Lithium ion battery short circuit test method |
| CN111812470A (en) * | 2020-07-21 | 2020-10-23 | 上海恩捷新材料科技有限公司 | Method for testing continuous voltage resistance of film |
| CN111812470B (en) * | 2020-07-21 | 2021-05-04 | 上海恩捷新材料科技有限公司 | Method for testing continuous voltage resistance of film |
| WO2022016923A1 (en) * | 2020-07-21 | 2022-01-27 | 上海恩捷新材料科技有限公司 | Method for continuous testing of voltage resistance of thin film |
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