Power lithium ion battery thermal runaway flue gas safety evaluation testing method

According to a power lithium ion battery thermal runaway flue gas safety evaluation testing method provided by the invention, comprehensive analysis, research and judgment are carried out at the aspects of the gas production rate of a lithium ion battery, the personnel safety evacuation time, the ventilation efficiency of a test site, the component analysis of the flue gas generated by thermal runaway of the lithium ion battery and the like, especially in combination with the ventilation efficiency of the test site, the final evaluation result is more real and is close to the actual use condition; and whether the power lithium ion battery is damaged if thermal runaway occurs in the actual use process is really evaluated, so that possible accidents are avoided.