CN113740680A - Lithium battery diaphragm electrostatic breakdown testing device - Google Patents
Lithium battery diaphragm electrostatic breakdown testing device Download PDFInfo
- Publication number
- CN113740680A CN113740680A CN202110986274.2A CN202110986274A CN113740680A CN 113740680 A CN113740680 A CN 113740680A CN 202110986274 A CN202110986274 A CN 202110986274A CN 113740680 A CN113740680 A CN 113740680A
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- Prior art keywords
- metal plate
- electrostatic
- oscilloscope
- lower metal
- cable
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- 230000015556 catabolic process Effects 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 230000008054 signal transmission Effects 0.000 claims abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 23
- 230000005611 electricity Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 239000012528 membrane Substances 0.000 abstract description 3
- 238000010998 test method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention discloses a lithium battery diaphragm electrostatic breakdown testing device which comprises an electrostatic generator, a fixed seat, an electrostatic gun, an attenuator, an oscilloscope and a computer, wherein the fixed seat comprises a bottom plate and an upright rod fixed on the bottom plate, an electrostatic gun clamping mechanism is installed on the upright rod, an insulating pad, a lower metal plate and an upper metal plate are sequentially arranged on the bottom plate from bottom to top, the electrostatic gun is connected with the electrostatic generator through a high-voltage cable, the tip end of the electrostatic gun is used for being in contact with the upper metal plate, the lower metal plate is connected to the oscilloscope through a cable, the oscilloscope is connected with the computer through a signal transmission line, the attenuator is positioned on the cable between the lower metal plate and the oscilloscope, and the lower metal plate is also connected with a grounding cable. The invention can effectively simulate the generation process of static electricity through the static electricity generator, and simultaneously captures the breakdown voltage signal through the high-resolution oscilloscope, thereby providing an effective test method for the membrane static breakdown voltage.
Description
Technical Field
The invention relates to a lithium battery diaphragm electrostatic breakdown testing device, which is used for accurately testing the electrostatic breakdown voltage of a diaphragm and belongs to the technical field of lithium battery diaphragm production.
Background
With the rapid popularization of new energy electric vehicles, lithium batteries are more and more widely applied, the safety performance of the lithium batteries is more and more emphasized, and the performance of the diaphragm serving as an important component material of the lithium batteries directly influences the safety of the lithium batteries.
At present, a diaphragm is easy to carry a large amount of static electricity in the production process of the diaphragm, and the breakdown of the diaphragm is possibly caused by the overlarge static voltage, so that the quality of the diaphragm is influenced, and potential safety hazards are generated. However, a corresponding testing device is absent in the current market, so that the influence of electrostatic breakdown on the diaphragm is analyzed by the testing device capable of testing the electrostatic breakdown voltage of the diaphragm, and an effective basis is provided for electrostatic management and control in the production and storage processes of the lithium battery diaphragm.
Disclosure of Invention
The invention aims to provide a lithium battery diaphragm electrostatic breakdown testing device which can be used for researching the influence of static electricity on the performance of a diaphragm and solving the problem that the prior art lacks a related testing device for diaphragm electrostatic breakdown.
The invention adopts the following technical scheme: the utility model provides a lithium cell diaphragm electrostatic breakdown testing arrangement, it includes electrostatic generator, fixing base, static rifle, attenuator, oscilloscope and computer, and the fixing base includes the bottom plate and fixes the pole setting on the bottom plate, installs static rifle fixture in the pole setting, is equipped with insulating pad, lower metal sheet and last metal sheet from the bottom up in proper order on the bottom plate, and the static rifle is connected with electrostatic generator through high-voltage cable, and the pointed end of static rifle is used for contacting with last metal sheet, the metal sheet is connected to the oscilloscope through the cable down, and the oscilloscope passes through signal transmission line and is connected with the computer, the attenuator is located on the cable between metal sheet and the oscilloscope down, still be connected with a ground connection cable on the metal sheet down.
The electrostatic gun clamping mechanism comprises a clamping end and a movable end which are fixedly connected together, the electrostatic gun is fixed on the clamping end, and the movable end is rotatably connected to the vertical rod through a rotating shaft.
The area of the upper metal plate is smaller than that of the lower metal plate.
The invention has the beneficial effects that: when the invention is used, a diaphragm to be measured is tiled between a lower metal plate and an upper metal plate, the area of the diaphragm is larger than that of the upper metal plate, then an electrostatic gun moves downwards to enable the tip of the electrostatic gun to be close to and contact with the upper metal plate, then parameters of an electrostatic generator are set and started, the tip of the electrostatic gun can generate a simulated electrostatic voltage, when the diaphragm is punctured, a voltage signal flows from the upper metal plate to the lower metal plate through the diaphragm, then the voltage signal is transmitted to an oscilloscope through a cable on the lower metal plate and an attenuator, the voltage signal is collected and analyzed by the oscilloscope, waveforms and data are transmitted to a computer, and the puncturing condition of the diaphragm can be judged according to the data and the waveforms on the computer.
The invention can effectively simulate the generation process of static electricity through the static electricity generator, and simultaneously captures the breakdown voltage signal through the high-resolution oscilloscope, thereby providing an effective test method for the membrane static breakdown voltage. The invention is essentially different from the voltage breakdown tester in the prior art, because the electrostatic discharge voltage is generally from thousands of volts to dozens of kilovolts, the discharge time is generally in nanosecond level, and the minimum unit of the boosting time of the voltage breakdown tester in the prior art is also in millisecond level, the generation process of static electricity can not be simulated, and signals such as instantaneous voltage current and the like in electrostatic breakdown are difficult to capture.
The invention can effectively test the electrostatic breakdown voltage of the diaphragm, can also measure the voltage change of the film in the electrostatic breakdown process, provides an auxiliary test device for researching the influence of static electricity on the performance of the diaphragm, and is also suitable for the electrostatic breakdown test of other films.
Drawings
Fig. 1 is a schematic diagram of an electrostatic breakdown testing device for a lithium battery diaphragm according to an embodiment of the invention.
In the figure: 1-electrostatic generator, 2-fixed seat, 3-electrostatic gun clamping mechanism, 4-electrostatic gun, 5-upper metal plate, 6-lower metal plate, 7-insulating pad, 8-attenuator, 9-computer and 10-oscilloscope.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The structure of the lithium battery diaphragm electrostatic breakdown testing device provided by the embodiment of the invention is shown in fig. 1, the lithium battery diaphragm electrostatic breakdown testing device provided by the embodiment of the invention comprises an electrostatic generator 1, a fixed seat 2, an electrostatic gun 4, an attenuator 8, an oscilloscope 10 and a computer 9, wherein the fixed seat 2 comprises a bottom plate and an upright rod fixed on the bottom plate, an electrostatic gun clamping mechanism 3 is installed on the upright rod, the electrostatic gun clamping mechanism 3 comprises a clamping end and a movable end which are fixedly connected together, the electrostatic gun 4 is fixed on the clamping end, and the movable end is rotatably connected to the upright rod through a rotating shaft.
The bottom plate is sequentially provided with an insulating pad 7, a lower metal plate 6 and an upper metal plate 5 from bottom to top, the electrostatic gun 4 is connected with the electrostatic generator 1 through a high-voltage cable, the tip end of the electrostatic gun 4 is used for being in contact with the upper metal plate 5, the area of the upper metal plate 5 is smaller than that of the lower metal plate 6, the lower metal plate 6 is connected to the oscilloscope 10 through a cable, the oscilloscope 10 is connected with the computer 9 through a signal transmission line, the attenuator 8 is located on the cable between the lower metal plate 6 and the oscilloscope 10, and the lower metal plate 6 is further connected with a grounding cable.
When the lithium battery diaphragm electrostatic breakdown testing device of this embodiment is used, the diaphragm to be tested is tiled between lower metal plate 6 and upper metal plate 5, the diaphragm area to be tested is greater than the area of upper metal plate 5, then move static gun 4 downwards to make the tip of static gun 4 close to and contact with upper metal plate 5, then set up the parameter of static generator 1 and start, the tip of static gun 4 can produce a simulation electrostatic voltage, after the diaphragm is punctured, there is voltage signal to flow to lower metal plate 6 through the diaphragm by upper metal plate 5, the cable on metal plate 6 passes through attenuator 8 transmission to oscilloscope 10 under the rethread, voltage signal can be on waveform and data transmission to computer 9 after being gathered and analyzed by oscilloscope 10, can judge the breakdown condition of diaphragm according to data and waveform on computer 9.
The invention can effectively simulate the generation process of static electricity through the static electricity generator, and simultaneously captures the breakdown voltage signal through the high-resolution oscilloscope, thereby providing an effective test method for the membrane static breakdown voltage. The invention can effectively test the electrostatic breakdown voltage of the diaphragm, can also measure the voltage change of the film in the electrostatic breakdown process, provides an auxiliary test device for researching the influence of static electricity on the performance of the diaphragm, and is also suitable for the electrostatic breakdown test of other films.
In other embodiments of the present invention, the electrostatic gun clamping mechanism may also adopt other structures as long as it can clamp the electrostatic gun and drive the electrostatic gun to move up and down.
Although the embodiments of the present invention have been described above in detail, the present invention is not limited to the above-described embodiments. The scope of the invention defined by the appended claims encompasses all equivalent substitutions and modifications.
Claims (3)
1. The utility model provides a lithium cell diaphragm electrostatic breakdown testing arrangement which characterized in that: the electrostatic gun comprises an electrostatic generator, a fixing seat, an electrostatic gun, an attenuator, an oscilloscope and a computer, wherein the fixing seat comprises a bottom plate and a vertical rod fixed on the bottom plate, an electrostatic gun clamping mechanism is installed on the vertical rod, an insulating pad, a lower metal plate and an upper metal plate are sequentially arranged on the bottom plate from bottom to top, the electrostatic gun is connected with the electrostatic generator through a high-voltage cable, the tip of the electrostatic gun is used for being in contact with the upper metal plate, the lower metal plate is connected to the oscilloscope through a cable, the oscilloscope is connected with the computer through a signal transmission line, the attenuator is located on the cable between the lower metal plate and the oscilloscope, and a grounding cable is further connected to the lower metal plate.
2. The lithium battery separator electrostatic breakdown testing device of claim 1, characterized in that: the electrostatic gun clamping mechanism comprises a clamping end and a movable end which are fixedly connected together, the electrostatic gun is fixed on the clamping end, and the movable end is rotatably connected to the vertical rod through a rotating shaft.
3. The lithium battery separator electrostatic breakdown testing device of claim 1, characterized in that: the area of the upper metal plate is smaller than that of the lower metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986274.2A CN113740680A (en) | 2021-08-26 | 2021-08-26 | Lithium battery diaphragm electrostatic breakdown testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986274.2A CN113740680A (en) | 2021-08-26 | 2021-08-26 | Lithium battery diaphragm electrostatic breakdown testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113740680A true CN113740680A (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110986274.2A Pending CN113740680A (en) | 2021-08-26 | 2021-08-26 | Lithium battery diaphragm electrostatic breakdown testing device |
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| CN (1) | CN113740680A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1945305A (en) * | 2006-09-30 | 2007-04-11 | 中国科学院电工研究所 | Test method and device for repeated nanosecond pulse medium breakdown characteristic |
| CN104090217A (en) * | 2014-07-10 | 2014-10-08 | 深圳市星源材质科技股份有限公司 | Separator breakdown voltage testing device and method |
| CN104535868A (en) * | 2015-01-09 | 2015-04-22 | 中国人民解放军军械工程学院 | Electrostatic discharge test device under electromagnetic pulse radiation environment |
| CN208188252U (en) * | 2018-04-03 | 2018-12-04 | 上海恩捷新材料科技股份有限公司 | Lithium ion battery separator breakdown voltage test system and system |
| CN109686203A (en) * | 2019-01-29 | 2019-04-26 | 中国人民解放军陆军工程大学 | Electrostatic electromagnetic pulse induces Characterization of Air Electrostatic Discharge experimental system |
| CN208953605U (en) * | 2018-08-17 | 2019-06-07 | 傲威半导体无锡有限公司 | A kind of test device for Transient Voltage Suppressor electrostatic clamping voltag |
| CN213903708U (en) * | 2020-12-11 | 2021-08-06 | 合肥国轩高科动力能源有限公司 | Lithium battery diaphragm breakdown voltage testing device |
-
2021
- 2021-08-26 CN CN202110986274.2A patent/CN113740680A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1945305A (en) * | 2006-09-30 | 2007-04-11 | 中国科学院电工研究所 | Test method and device for repeated nanosecond pulse medium breakdown characteristic |
| CN104090217A (en) * | 2014-07-10 | 2014-10-08 | 深圳市星源材质科技股份有限公司 | Separator breakdown voltage testing device and method |
| CN104535868A (en) * | 2015-01-09 | 2015-04-22 | 中国人民解放军军械工程学院 | Electrostatic discharge test device under electromagnetic pulse radiation environment |
| CN208188252U (en) * | 2018-04-03 | 2018-12-04 | 上海恩捷新材料科技股份有限公司 | Lithium ion battery separator breakdown voltage test system and system |
| CN208953605U (en) * | 2018-08-17 | 2019-06-07 | 傲威半导体无锡有限公司 | A kind of test device for Transient Voltage Suppressor electrostatic clamping voltag |
| CN109686203A (en) * | 2019-01-29 | 2019-04-26 | 中国人民解放军陆军工程大学 | Electrostatic electromagnetic pulse induces Characterization of Air Electrostatic Discharge experimental system |
| CN213903708U (en) * | 2020-12-11 | 2021-08-06 | 合肥国轩高科动力能源有限公司 | Lithium battery diaphragm breakdown voltage testing device |
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