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1. (WO2018054293) CONTROL METHOD FOR SWITCHING OF DUAL DRIVE COMPRESSOR, CONTROL DEVICE, CONTROL SYSTEM, AND VEHICLE

Pub. No.:    WO/2018/054293    International Application No.:    PCT/CN2017/102322
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Wed Sep 20 01:59:59 CEST 2017
IPC: B60H 1/32
Applicants: BYD COMPANY LIMITED
比亚迪股份有限公司
Inventors: YANG, Qihai
杨其海
CHEN, Xuefeng
陈雪峰
YANG, Zhifang
杨志芳
HUANG, Kejun
黄克军
CHU, Congchuan
储从川
Title: CONTROL METHOD FOR SWITCHING OF DUAL DRIVE COMPRESSOR, CONTROL DEVICE, CONTROL SYSTEM, AND VEHICLE
Abstract:
Control method for switching of a dual drive compressor. The dual drive compressor comprises an electrically driven compressor and mechanically driven compressor. The control method comprises: receiving battery level information of a power battery; sending, on the basis of the battery level information, a switching command for instructing a method for switching between the mechanically driven compressor and the electrically driven compressor; and sending, before the currently operating compressor completely stops, and when a turning speed of a belt pulley of the mechanically driven compressor and a turning speed of the electrically driven compressor satisfy a preset condition, an instruction for changing a state of an electromagnetic clutch (4000) so as to change the state of the electromagnetic clutch (4000) and switch between the mechanically driven compressor and the electrically driven compressor. By performing power switching before a currently operating compressor completely stops, the invention can address issues of weakening or loss of an air conditioning function when performing power switching for a dual drive compressor, thereby improving user experience. The current application further provides a dual drive compressor control device, control system, and vehicle.