By using graphite of high temperature resistant properties, of impurities under the high temperature of a temperature measuring instrument need long time test temperatures above 2000 degrees, even under extreme article a need to test a temperature higher than 3000 degrees.

Diaphragm used to separate the battery positive and negative, must make the electrolyte ions can pass at the same time, its performance directly affects the battery internal resistance and interface structure of diaphragm in the process of the lift, temperature uniformity of the diaphragm performance, especially the diaphragm capacity, cycle life and security features have a direct impact, by testing the temperature uniformity of improve the control on the properties of the diaphragm.

OCV/ACR/shell voltage test at present stage in the same test board to complete the test.RongHuaCheng stages lithium batteries will be aging test, inside the battery will have crystal precipitation, during this kind of phenomenon will cause degradation and even the risk of short road in the future, so every once in a while is needed in making the test battery open circuit voltage (OCV) to determine the internal aging trend.Molding and qualified batteries need to be filtered by testing resistance (ACR), through strict screening process high consistency of battery as a class, preparing for a subsequent module encapsulation.Tests used to detect battery shell is negative between the shell and the existence of a crack, to determine if there is a defective insulation inside the battery.

OCV to at the same time focus on the open circuit voltage of batteries, battery temperature changes, such as batteries elevated temperature anomaly is detected, then the risk of short circuit batteries exist.

To balance control of heating/cooling, temperature monitoring to ensure the quality and safety performance, and provide reference for the thermocouple loading installation.