The technological progress of the new energy automobile industry has put forward higher requirements for temperature control test technology. In order to meet the new needs of the new energy automobile industry testing, our company has developed a high and low temperature coolant test machine for new energy automobile battery modules, which can not only test the high temperature and low temperature tolerance, reliability and performance parameters of the battery modules. Both heat dissipation efficiency, flow resistance, pressure drop, withstand voltage test functions, but also especially added multi-channel temperature control, accurate flow control, pressure pulse control, constant power control and other optional functions.