Method for evaluating high-temperature aging time of lithium ion battery
A lithium-ion battery, high-temperature aging technology, applied in the field of lithium-ion batteries, can solve the problems of no high-temperature aging time evaluation method, poor battery performance, and electric vehicle fire.
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[0032] The following specific examples will further illustrate the present invention in detail.
[0033] A method for evaluating the high temperature aging time of a lithium ion battery provided by the present invention includes the following steps:
[0034] 1) Preparation of Fe and Cu metal particles
[0035] Add Fe and Cu particles with a particle size of 80-100 μm into a vial filled with absolute ethanol, respectively, and the volume ratio of Fe and Cu metal particles to absolute ethanol is 1:100 (the volume of metal particles is calculated by stacking volume) to obtain Fe / alcohol mixture, Cu / alcohol mixture;
[0036] 2) Cell production
[0037] Take 4N bare cells of the same type that have just been wound as a group. In this embodiment, N=4, and N cells are taken from each group of bare cells to implant Fe particles, that is, shake the vial of Fe / alcohol mixture to make the The particles are evenly dispersed in the alcohol, and a drop of Fe / alcohol mixture is drawn with...
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