Lithium ion battery thermal runaway modeling method

The invention discloses a lithium ion battery thermal runaway modeling method which comprises the following steps: firstly, selecting a battery to be researched, measuring measurable thermophysical parameters of the battery, and acquiring other thermophysical parameters and chemical kinetic parameters; secondly, establishing a thermal runaway model of the lithium ion battery; thirdly, performing model verification and parameter correction through experiments; and finally, researching the thermal runaway mechanism of the battery, thermal runaway heat production, battery temperature distribution characteristics and the influence of a convective heat transfer coefficient on the thermal runaway of the battery through the corrected model. By modeling battery side reaction in the battery thermal runaway process, the battery thermal runaway process triggered by local heating is simulated, and the influence of a battery thermal runaway mechanism, thermal runaway heat production and a convective heat transfer coeffici