Battery chiller control with electronic expansion device

• Main Authors: MARK C. EVANS, TIMOTHY VAN EVANS, ALI JALILEVAND, STEVEN L. LAMBERT, JAN XU, WILLIAM STEWART JOHNSTON
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2017
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; BASIC ELECTRIC ELEMENTS; ELECTRICITY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; VEHICLES IN GENERAL

A climate-control system for a vehicle includes a refrigerant subsystem having a chiller and an electronic expansion valve (EXV) arranged to selectively route refrigerant to the chiller. The vehicle further includes a coolant subsystem having conduit arranged to circulate coolant through a traction battery and the chiller. The coolant subsystem further includes a first temperature sensor configured to measure coolant circulating into an inlet side of the chiller and a second temperature sensor configured to measure coolant circulating out of an outlet side of the chiller. A vehicle controller is configured to, in response to the battery exceeding a threshold temperature and cabin air conditioning being requested, command opening of the EXV to a predetermined position and adjust the position based on a measured coolant temperature difference between the first temperature sensor and the second temperature sensor. 提供了种利用电子膨胀装置的电池冷却器控制。种用于车辆的气候控制系统包括制冷剂子系统，该制冷剂子系统具有冷却器和被布置为选择性地将制冷剂输送到冷却器的电子膨胀阀(EXV)。车辆还包括具有被布置为将冷却