Beiqi Foton Motor Co., Ltd.

Other

Borgward Trademark Holdings Gmbh

Weibin Yang

Yang Li

Xiao Ming Ma

Wei Yan

Shan Lu

Junhong Zhang

Guofei Li

Ruchuan Liang

Haibo Liang

Liye Liu

Lianjun Lu

A method and an apparatus for controlling an operation mode of a hybrid electric vehicle and a hybrid electric vehicle are provided in the present disclosure. The method includes: detecting a current state of charge of a power battery and an expected torque at wheels in the hybrid electric vehicle; maintaining a current operation mode of the hybrid electric vehicle, if it is detected that the current state of charge enters a state hysteresis area or the expected torque at wheels enters a torque hysteresis area; obtaining a duration of the current operation mode and determining a next operation mode of the hybrid electric vehicle according to the duration, the current state of charge and the expected torque at wheels, if it is detected that the current state of charge exits the state hysteresis area and the expected torque at wheels exits the torque hysteresis area. With the method, the problems of frequently switching from one operation mode to another operation mode may be avoided, the comprehensive performance of the hybrid electric vehicle and the fuel economy may be improved, and the user experience may be enhanced.

Hybrid electric vehicle, method and apparatus for controlling operation mode of the same

A method for controlling a high-voltage system circuit of an electric vehicle comprises: judging whether the circuit is in a closed-circuit state after receiving an instruction of opening the circuit; judging whether the positive contactor is in an on-state and whether an instruction of turning on the positive contactor is valid if the circuit is in a closed-circuit state; sending an instruction of turning off the positive contactor if the positive contactor is in an on-state and the instruction of turning on the positive contactor is valid; sending an instruction of turning off the negative contactor; judging whether the pre-charging contactor is in an on-state and whether an instruction of turning on the pre-charging contactor is valid; sending an instruction of turning off the pre-charging contactor if the pre-charging contactor is in an on-state and the instruction of turning on the pre-charging contactor is valid.

Electric vehicle and method and system for controlling high-voltage system circuit thereof

A method and a system for shifting a gear of a hybrid electric vehicle are provided. The method includes following steps. A state of a battery is determined according to a remaining capacity of the battery, a required torque and a state of the hybrid electric vehicle, in which the state of the battery comprises a discharging state or a charging state. A plurality of optional target gears, a torque and a rotating speed of an engine corresponding to each optional target gear are determined according to the state of the battery and a speed of the hybrid electric vehicle. An optional target gear with a minimum fuel consumption of the engine is selected as a target gear from the plurality of optional target gears. It is determined whether to perform a gear shift by comparing with a current gear.

Method and system for shifting a gear of a hybrid electric vehicle

Disclosed are a hybrid power system of a vehicle and a control method therefor. The hybrid power system of a vehicle comprises: an engine; a dual-clutch automatic transmission comprising an ISG motor; a first power unit and a second power unit; a power battery, the power battery being connected to the ISG motor by the first power unit; a power battery manager, the power battery manager being connected to the power battery and used to test an SOC of the power battery; a rear wheel drive motor, the rear wheel drive motor being connected to the power battery by the second power unit, and the rear wheel drive motor being connected to a rear speed reducer of the vehicle; and a vehicle controller, the vehicle controller being connected to the power battery manager, and the vehicle controller controlling the vehicle to enter a corresponding operating mode according to the SOC and drive required torque WTD at a wheel of the vehicle. The hybrid power system of a vehicle and the control method therefor can ensure that a vehicle operates in the best operating mode, thereby improving the performance of the vehicle.

Vehicle, a hybrid power system thereof and a control method therefor

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Beijing, China

Weibin Yang