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Title:
VEHICLE CONTROL METHOD AND POWER SYSTEM FOR HYBRID ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/177360
Kind Code:
A1
Abstract:
A vehicle control method for a hybrid electric vehicle, comprising: after a body control module (BCM) detects a starting signal of the hybrid electric vehicle, sending starting request information to a vehicle control unit (VCU), a motor control module (MCU) and an engine control module (ECM) separately; when one of the BCM, the MCU and the ECM is provided with a backup module, if the backup module does not receive feedback information generated by the VCU based on the starting request information within a preset time, sending a self-inspection command to a transmission control module (TCU), a battery management module (BMS) and a secondary motor controller separately; and when the backup module determines that the hybrid electric vehicle meets a starting condition according to the received self-inspection result information fed back by the TCU, the BMS and the secondary motor controller and detects that the ECM and the MCU successfully match codes, sending a starting instruction to control startup of the hybrid electric vehicle. Also involved is a power system of a hybrid electric vehicle. The vehicle control method can still make the vehicle drive when the VCU fails, and controls the hybrid electric vehicle to limp to a target location safely, ensuring the vehicle safety.

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Inventors:
WANG CHUNSHENG (CN)
LI LINGKAI (CN)
LI KAIQI (CN)
LUO YONGGUAN (CN)
Application Number:
PCT/CN2018/081047
Publication Date:
October 04, 2018
Filing Date:
March 29, 2018
Export Citation:
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Assignee:
BYD CO LTD (CN)
International Classes:
B60W20/50; B60W10/04; B60W50/029
Foreign References:
CN101734140A2010-06-16
CN101927764A2010-12-29
CN102897165A2013-01-30
CN105882421A2016-08-24
CN105329236A2016-02-17
EP0942849B12007-01-31
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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