Patent ID: 9566978
Date: 2017-02-14
CPC Classifications: B60K,B60W,Y02T,Y10S

Claim:
1. A drive control method for a vehicle, the vehicle comprising an engine unit, a transmission unit configured to be selectively coupled with the engine unit, a first motor generator coupled with the transmission unit, an output unit configured to transmit power transmitted by the transmission unit to at least one of front and rear wheels of the vehicle, a power switching device configured to enable or interrupt power transmission between the transmission unit and the output unit, a second motor generator configured to drive the at least one of the front and rear wheels, and a power battery coupled with the first and second motor generators respectively, the drive control method comprising: acquiring an operation parameter of the vehicle; performing a drive control of the vehicle based on the operation parameter and an operation mode selected from operation modes of the vehicle, wherein the operation modes comprise an electrical vehicle (EV) mode and a hybrid electrical vehicle (HEV) mode, and the HEV mode comprises at least one of a series operation mode, a parallel operation mode, or a series-parallel operation mode, and each of the EV mode and the HEV mode comprises at least one of a front-wheel drive operation mode, a rear-wheel drive operation mode, or a four-wheel drive operation mode; and wherein the operation parameter of the vehicle comprises at least one of an electric quantity of the power battery, a speed of the vehicle, a maximum discharge power of the power battery, a slope of a road where the vehicle runs on, a required torque of the vehicle, or a required power of the vehicle; when receiving an instruction of switching from an EV mode to a HEV mode, controlling the vehicle to switch to the HEV mode; when not receiving the instruction of switching from an EV mode to a HEV mode, if the electric quantity of the power battery is less than or equal to a first electric quantity threshold, or the maximum discharge power of the power battery is less than or equal to a first discharge power threshold, or the slope of the road where the vehicle runs on is greater than or equal to a first slope threshold, controlling the vehicle to switch to a HEV mode, otherwise, controlling the vehicle to be kept in an EV mode; and when receiving an instruction of switching from a HEV mode to an EV mode, if the electric quantity of the power battery is greater than a second electric quantity threshold, and the maximum discharge power of the power battery is greater than a second discharge power threshold, and the slope of the road where the vehicle runs on is less than a second slope threshold, and the speed of the vehicle is less than a first speed threshold, controlling the vehicle to switch to an EV mode, otherwise, controlling the vehicle to be kept in a HEV mode.