Method for formulating insulation and voltage resistance test standard of core packages with gel diaphragms

A technology of dielectric withstand voltage and test standard, which is applied in the direction of testing dielectric strength, measuring electricity, measuring devices, etc., and can solve the problem of inability to guarantee the validity and accuracy of the results of the core-pack dielectric withstand voltage test with gel diaphragm. , to achieve the effect of improving the test effect, good validity and pertinence, and improving the detection power

Active Publication Date: 2022-01-07
TIANJIN ENERGIES
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Problems solved by technology

[0002] At present, the core packs with gel diaphragms for different systems (including different positive and negative electrode materials, diaphragms) usually adopt the same insulation withstand voltage test standards (including voltage, time, pressure, and resistance) as conventional diaphragm core packs. , but this standard cannot guarantee the validity and accuracy of the test results of the core-packed insulation with a gel diaphragm

Method used

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  • Method for formulating insulation and voltage resistance test standard of core packages with gel diaphragms
  • Method for formulating insulation and voltage resistance test standard of core packages with gel diaphragms
  • Method for formulating insulation and voltage resistance test standard of core packages with gel diaphragms

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Embodiment

[0032] like figure 1 As shown, a standard formulation method for core-wrapped insulation withstand voltage test with gel diaphragm, including the following steps:

[0033] The first step S01, determination of the tolerance of the gel diaphragm 3: conduct an orthogonal gradient experiment on the gel diaphragm 3 used in the core pack 5, and determine the pressure resistance value of the gel diaphragm 3 and the The pressure and time used in the orthogonal gradient experiment;

[0034] The second step S02, determination of the tolerance of the independent unit 1: Carry out an orthogonal gradient experiment on the independent unit 1 of the core pack 5, and then take the pressure resistance value of the gel diaphragm 3 in the first step S01 and the independent unit 1 The minimum value in the withstand voltage value of unit 1 is used as the upper voltage limit in the insulation withstand voltage test; the pressure used to reach the upper voltage limit is used as the upper pressure l...

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Abstract

The invention discloses a method for formulating insulation and voltage resistance test standards of core packages with gel diaphragms, in particular, a method for formulating insulation and voltage resistance test standards of core packages with gel diaphragms for different systems. The method comprises the following steps of: determining the endurance capacity of a gel diaphragm; determining the endurance capacity of independent units; determining a pressure-capacitance curve, a pressure-capacitance change rate curve and a pressure-capacitance growth rate curve of the core package at different stages; determining the necessity of a pressurized insulation and voltage resistance test of the core package; determining a resistance value range of the core package; determining a test time range; and formulating an insulation and voltage resistance test standard of the core package. Finally, the foreign matter detection effect is improved, and the overall safety of a power battery is improved.

Description

technical field [0001] The invention belongs to the technical field of power battery production, and in particular relates to a method for formulating a test standard for insulation withstand voltage of a core pack with a gel diaphragm. Background technique [0002] At present, the core packs with gel diaphragms for different systems (including different positive and negative electrode materials, diaphragms) usually adopt the same insulation withstand voltage test standards (including voltage, time, pressure, and resistance) as conventional diaphragm core packs. , but this standard cannot guarantee the validity and accuracy of the test results of the core pack insulation with a gel diaphragm. For this reason, there is a need for a standard-setting method for the core-wrapped insulation withstand voltage test with a gel diaphragm that is suitable for different systems, so that it has good effectiveness and pertinence. Contents of the invention [0003] The invention provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 苏畅郝华冉马遂杰
Owner TIANJIN ENERGIES
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