Electric vehicle lithium-ion battery pack grouping technology

The present invention belongs to the technical field of electric vehicle power electric sources. In the existing grouping technology, the air cooling heat dissipating is not balanced, the battery performance dissimilation is heavy, the regular check replacement is required, the liquid cooling heat dissipating structure is complex, the weight and the cost are substantially increased, the battery pack requires heating charging when the temperature is lower than 10 DEGC, and the uniformity of the battery performance inside the pack can not be maintained because the prior art can not provide the uniform and rapid heating. The invention relates to an electric vehicle lithium-ion battery pack grouping method, wherein a heat dissipating sheet having a geometric size of larger than the monomer battery and an electric heating membrane having a geometric size of larger than the monomer battery are switched between the adjacent batteries for participating in the group, such that the heat produced by the battery during the working is uniformly, rapidly and directly emitted to the outside environment from the heat dissipating sheet, no heat accumulation effect is not generated between the adjacent batteries, and the uniformity of the battery performance is ensured; and in winter, the uniform and densely distributed electric heating membrane provides the rapid and uniform heating for each battery so as to complete the charging, such that the battery performance film uniformity clouds every piece battery provides fast uniform heating, in order to complete the charging, to prevent the emergence of battery performance dissimilation due to the non-uniform heating can be prevented.