| 摘要 |
A vehicle battery temperature control system includes a battery, a heating device, a housing, a heat exchanger and a sensor. The battery has a heat sink that transfers thermal energy to the battery. The heating device is selectively operable to provide thermal energy. The housing includes a chamber that contains the battery and a saturated liquid coolant that substantially immerses the heat sink, and the coolant receives the thermal energy from the heating device to cause a phase change of the coolant from liquid to vapor to heat the heat sink which heats the battery. The heat exchanger removes thermal energy from the vapor to change the vapor to liquid and returns the liquid to the chamber. The sensor detects a characteristic of the vapor and signals operation of the heating device to provide the thermal energy based on a relationship between the characteristic and a threshold.
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