The invention belongs to the technical field of
battery thermal management, and particularly relates to a
phase change material coupled immersion cooling wide temperature range
battery thermal management system, which comprises at least one battery, and further comprises a composite flexible
phase change material arranged on the outer side of the battery, and the composite flexible
phase change material exchanges heat with the side wall of the battery; the
dielectric fluid flowing channel is arranged between the composite flexible
phase change material and the side wall of the battery, the
dielectric fluid flowing channel is used for
dielectric fluid flowing, and the dielectric fluid exchanges heat with the composite flexible
phase change material and the battery; and the liquid inlet end of the
heat pump heat exchange
system communicates with the liquid outlet end of the dielectric fluid flowing channel, the liquid outlet end of the
heat pump heat exchange
system communicates with the liquid inlet end of the dielectric fluid flowing channel, and the
heat pump heat exchange system is used for cooling or heating the dielectric fluid. According to the invention, the flexible
phase change material is combined with immersed heat exchange, so that the
heat balance capability is realized, the temperature of the battery can be effectively controlled in an optimal performance interval, and the performance of the battery is favorably improved.