Byd Company Limited

Dongsheng Yang

Yubo Lian

Hongbin Luo

Jintao Zhang

Chunsheng Wang

Yunhui Bai

Jiquan Wang

Jun Su

Jianxin Wang

Mingwen Chen

Xuechao Wang

Junyan Zhang

Guoxiang Lu

Haijun Lv

Shangzhong Zhao

Yifeng Tang

A method for controlling a hybrid vehicle, includes: acquiring a traveling parameter of the hybrid vehicle; controlling the engine, the driving motor, and the electric generator according to the traveling parameter, to enable the engine to operate in an economic zone by controlling charging and discharging of the power battery; comparing equivalent fuel consumptions of a series mode, a parallel mode, and an EV mode of the hybrid vehicle, and determining a minimum equivalent fuel consumption among the equivalent fuel consumptions; and selecting one of the series mode, the parallel mode, or the EV mode having the minimum equivalent fuel consumption as a current operation mode of the hybrid vehicle. The hybrid vehicle includes the engine and a driving motor outputting power to a wheel end, an electric generator generating electricity, and the power battery supplying electricity to the driving motor and charged by the electric generator or the driving motor.

Control method and vehicle controller for hybrid vehicle

This application discloses a hybrid power automobile and a power system thereof. The power system includes: an engine, where the engine outputs power to wheels of the hybrid power automobile through a clutch; a power motor, where the power motor is configured to output a drive force to the wheels of the hybrid power automobile; a power battery, where the power battery is configured to supply power to the power motor; a DC-DC converter; and an auxiliary motor connected to the engine, where the auxiliary motor is connected to the power motor, the DC-DC converter, and the power battery, and when performing power generation under driving of the engine, the auxiliary motor implements at least one of charging the power battery, supplying power to the power motor, and supplying power to the DC-DC converter. Therefore, low-speed electric balance and low-speed smoothness of the entire vehicle can be maintained.

Hybrid electric vehicle and power system thereof

A steering system and a vehicle are provided. The steering system includes a steering wheel end shaft, a steering device end shaft, and an electric driving mechanism configured to drive decoupling or coupling of the steering wheel end shaft and the steering device end shaft that are coaxially disposed.

Steering system and vehicle

A power transmission system for a vehicle and a vehicle including the same are provided. The power transmission system includes an engine unit configured to generate power, a transmission unit adapted to selectively be coupled with the engine unit, and configured to transmit the power generated by the engine unit, a first motor generator coupled with the transmission unit, an output unit configured to transmit the power output by the transmission unit to at least one of front and rear wheels of the vehicle, and a second motor generator configured to drive the at least one of the front and rear wheels.

Power transmission system for vehicle and vehicle comprising the same

A power transmission system for a vehicle and a vehicle including the same are provided. The power transmission system includes: an engine unit; a plurality of input shafts, in which the engine unit is configured to selectively engage with one of the input shafts when the engine unit transmits power to the input shafts; a plurality of driving gears with one driving gear disposed on one input shaft; an output shaft configured to transfer the power from the input shafts; one or more linked gears rotatable at a different speed relative to the output shaft, in which the linked gears include a plurality of gear parts, the gear parts being configured to mesh with the driving gears on the input shafts; an output unit coupled on the output shaft and configured to transmit the power to front wheels of the vehicle; a clutch disposed on the output shaft and configured to selectively engage with the linked gear and the output unit so as to drive one or more wheels of the vehicle via the power output by the output unit; and a first motor generator configured to couple with one of the input shaft and the output shaft for power transmission.

The present disclosure discloses an electric vehicle, an active safety control system of an electric vehicle, and a control method of the active safety control system of an electric vehicle. The electric vehicle includes: multiple wheels, multiple motors, a wheel speed detection module, a steering wheel rotation angle sensor, a yaw rate sensor, and a battery pack. The active safety control system includes: an acquisition module, acquiring the wheel speed signal, the direction information, the yaw information, status information of the battery pack, and status information of the multiple motors; a status determining module, determining status of the electric vehicle; and a control module, generating a control instruction and delivering the control instruction to at least one motor.

Electric vehicle, active safety control system for electric vehicle, and control method for active safety control system of electric vehicle

The present disclosure discloses a vehicle and a braking feedback control method for the same. The braking feedback control method includes the following steps: detecting a current speed of a vehicle and a depth of a braking pedal of the vehicle; when the current speed of the vehicle is greater than a preset speed, the depth of the braking pedal is greater than 0, and an anti-lock braking system of the vehicle is in a non-working state, controlling the vehicle to enter a braking feedback control mode, where when the vehicle is in the braking feedback control mode, a required braking torque corresponding to the vehicle is obtained according to the depth of the braking pedal, and a braking torque of a first motor generator, a braking torque of a second motor generator, and a braking torque of basic braking performed on the vehicle are distributed according to the required braking torque.

Vehicle and braking feedback control method for the same

A power transmission system for a vehicle and a vehicle including the same are provided. The power transmission system includes: an engine unit configured to generate a power; an input shaft; an output shaft configured to transfer at least partial of the power from the input shaft; an output unit configured to rotate differentially relative to the output shaft; a synchronizer disposed on the output shaft and configured to selectively engage with the output unit such that the output unit rotates synchronously with the output shaft, and the output unit is configured to output power to drive one or more front and/or rear wheels of the vehicle; a first motor generator configured to directly or indirectly couple with one of the input shaft and the output shaft for power transmission; and a second motor generator configured to drive one or more front or rear wheels of the vehicle.

The present disclosure discloses an electric vehicle and an active safety control system and method thereof. The system includes: a wheel speed detection module configured to detect a wheel speed to generate a wheel speed signal; a steering wheel rotation angle sensor and a yaw rate sensor module, configured to detect state information of the electric vehicle; a motor controller; and an active safety controller configured to receive the wheel speed signal and state information, obtain state information of a battery pack and state information of four motors, obtain a first side slip signal or a second side slip signal according to the wheel speed signal, the state information, the battery pack and the four motors, and according to the first side slip signal or the second side slip signal, control four hydraulic brakes of the electric vehicle and control the four motors by using the motor controller.

Electric vehicle and active safety control system and method thereof

A transmission unit includes: input shafts, each of the input shafts being provided with a shift driving gear thereon; output shafts, each of the output shafts being provided with a shift driven gear configured to mesh with a corresponding shift driving; a motor power shaft configured to rotate together with one of the output shafts; and an output unit configured to rotate with one of the output shafts at different speeds and configured to selectively engage with one of the output shafts so as to rotate together with one of the output shafts. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.

Transmission unit, power transmission system and vehicle comprising the same

The present disclosure discloses a shifting control method for a hybrid vehicle. The shifting control method includes: detecting operating parameters of the hybrid vehicle, where the operating parameters of the hybrid vehicle includes vehicle speed, vehicle acceleration as reflected from an accelerator-pedal signal and a current gear of the hybrid vehicle; determining a work mode of the hybrid vehicle; performing speed adjustment and shifting control to the first motor-generator according to a work mode and the operating parameters of the hybrid vehicle to implement shifting control of the hybrid vehicle, where the work mode includes an electric-vehicle mode and a hybrid-electric-vehicle mode. The method considers performing speed adjustment and shifting control under various working conditions. This improves smoothness and comfort of the vehicle and enlarges the use scope. The present disclosure further discloses a power transmission system of a hybrid vehicle and a hybrid vehicle.

Vehicle and shifting control method and power transmission system thereof

The present invention provides a method for controlling an engine unit in a vehicle. The vehicle includes an engine unit, a transmission unit adapted to selectively couple with the engine unit and also configured to transmit the power generated by the engine unit, a first motor generator coupled with the transmission unit, an output unit, a power switching device, a second motor generator configured to drive at least one of front and rear wheels, and a power battery that is respectively connected to the first motor generator and the second motor generator. The method includes: acquiring an operating mode of a vehicle and an operating parameter of the vehicle; and controlling an engine unit according to an operating parameter and an operating mode to start or stop.

Method for controlling engine unit in vehicle and vehicle

The present disclosure discloses a cruise control method for a vehicle. The vehicle includes an engine unit, a transmission unit, a first motor generator, an output unit, a power switching device, a second motor generator, and a power battery. The cruise control method includes the following steps: when a signal for a vehicle to enter cruise control is detected, determining whether the vehicle meets a preset cruise control condition; and if the vehicle meets the preset cruise control condition, controlling the vehicle according to a current operating mode of the vehicle to enter a corresponding cruise mode, where when the current operating mode of the vehicle is an EV mode, the vehicle is controlled to enter an EV cruise mode, and when the current operating mode of the vehicle is an HEV mode, the vehicle is controlled to enter an HEV cruise mode. The present disclosure further discloses a vehicle.

Vehicle and cruise control method for the same

The present disclosure provides a drive control method, a drive control device of a hybrid electric vehicle and a hybrid electric vehicle. The drive control method includes: obtaining a current gear position of the hybrid electric vehicle, a current electric charge level of a power battery and a slope of a road on which the hybrid electric vehicle is driving; obtaining a current speed of the hybrid electric vehicle if the current gear position of the hybrid vehicle, the current electric charge level of the power battery, and the slope of the road on which the hybrid electric vehicle is driving meet a preset requirement; and causing the hybrid electric vehicle to enter a small load stop mode if the current speed is greater than or equal to a first speed threshold, and less than a second speed threshold.

Hybrid electric vehicle, drive control method and device of the same

A power transmission system for a vehicle and a vehicle including the same are provided. The power transmission system includes an engine unit to generate power, input shafts to receive power from the engine unit, an output shaft to transfer the power from the input shafts, linked gears rotatable differentially relative to the output shaft to mesh with driving gears on the input shafts, an output unit coupled on the output shaft to transmit the power to the front wheels of the vehicle, a synchronizer disposed on the output shaft to selectively engage with the linked gears, a first motor generator to perform power transmission with at least one of the input shafts and the output shaft, one or more second motor generators to drive two front wheels of the vehicle, and one or more third motor generators to drive two rear wheels of the vehicle.

Growing community of inventors

Guangdong, China

Dongsheng Yang