The invention discloses a battery module heat insulation pad
type selection method and a test
system, and belongs to the technical field of batteries, the battery module heat insulation pad
type selection method comprises the steps that a to-be-tested battery module is acquired, the to-be-tested battery module comprises a plurality of battery cells and a plurality of heat insulation pads, the plurality of battery cells are arranged at intervals along a first direction, and the plurality of heat insulation pads are arranged at intervals along a second direction; a heat insulation pad is arranged between any two adjacent battery cells in the plurality of battery cells, the plurality of battery cells comprise a target
battery cell, and the heat insulation capacities of the plurality of heat insulation pads are gradually increased along the direction far away from the target
battery cell in the first direction; triggering
thermal runaway of the target
cell; and determining a
thermal runaway propagation stop position in the direction away from the target
cell. Thus, the heat insulation performance of a plurality of heat insulation pads can be tested at the same time through one test, the sample cost, the test cost and the development time are saved, and the
test efficiency is greatly improved.