The invention belongs to the technical field of secondary battery aluminum-
plastic film reliability detection, and particularly relates to a soft
package battery shell insulation impedance test method. The
system according to the method comprises a test box, a sealing cover and a
temperature control assembly. The sealing cover is hinged on the test box; test grooves which are uniformly distributedare formed in the test box; the sealing cover is fixedly connected with a sealing
gasket over against the test grooves; symmetrically designed first sliding grooves are formed in the two side walls of the test grooves; a
temperature control plate is slidably connected in the first sliding grooves. Condensation pipes and heating wires are alternately arranged in the
temperature control plate. A first cavity is formed in one side, close to the hinged side of the sealing cover, of the test box; the temperature control
assembly is mounted in the first cavity; the temperature control
assembly is composed of a
regulator, a refrigerator and a heater. According to the invention, an
extreme environment is mainly simulated, and the resistance value is tested in the
extreme environment so that the insulation impedance test of the soft
package battery shell is more comprehensive, and the measurement accuracy is improved.