Abstract:
A brake system (100) and a brake method for a four-wheel drive electric vehicle and a four-wheel drive electric vehicle,in the system, according to a brake mode of the electric vehicle, a state of charge of a battery pack (4) and a vehicle speed, a first brake control unit controls a motor (6) to brake a wheel (9) through a motor controller (2) and a second brake control unit controls a brake actuator (12) to brake the wheels (9). The first brake control unit further determines whether a brake torque of the brake actuator (12) on the wheels (9) fails. If yes, the first brake control unit controls the motor (6) to brake the corresponding wheel (9) through the motor controller (2).
Abstract:
A mounting structure for an in-vehicle power battery may be provided. The mounting structure may comprise an upper cover (3), a suspension tray (1) and a bracket device (2) for supporting at least a part of a peripheral bottom portion of the suspension tray (1). The suspension tray (1) may be hermetically connected with the upper cover (3), forming a sealed space for receiving the power battery. The bracket device (2) may be detachably fixed to a bottom surface of the body floor. Further, a vehicle (100) comprising the mounting structure described above may also be provided.
Abstract:
A differential (100), a power transmission system and a vehicle are provided. The differential includes a first planetary carrier (11); a first gear ring (13); a first planetary gear (12) disposed on the first planetary carrier, and meshed with the first gear ring; a second planetary carrier (21); a second gear ring (23); and a second planetary gear (22) disposed on the second planetary carrier and meshed with the second gear ring as well as the first planetary gear, in which the first gear ring and the second gear ring are configured as two power output ends of the differential, the first planetary carrier and the second planetary carrier are configured as power input ends of the differential.
Abstract:
A hybrid electric vehicle, a drive control method and a drive control device of the hybrid electric vehicle are provided. The method includes: obtaining a current gear position of the hybrid electric vehicle and a current electric charge level of a power battery; determining whether the hybrid electric vehicle is within a speed start-stop interval according to the current gear position of the hybrid electric vehicle and the current electric charge level of the power battery; obtaining a slope of a road on which the hybrid electric vehicle is driving and a current speed of the hybrid electric vehicle, if the hybrid electric vehicle is within the speed start-stop interval; and controlling a working state of an engine and/or a motor of the hybrid electric vehicle according to the slope of the road on which the hybrid electric vehicle is driving and the current speed of the hybrid electric vehicle.
Abstract:
A differential(100) includes: a first planetary carrier(11), a first gear ring(13), and a first planetary gear(12) disposed on the first planetary carrier(11) and meshed with the first gear ring(13); and a second planetary carrier(21), a second gear ring(23), and a second planetary gear(22) disposed on the second planetary carrier(21) and meshed with the second gear ring(23) and the first planetary gear(12); the first gear ring(13) and the second gear ring(23) are configured as two power output ends of the differential(100), the first planetary carrier(11) and the second planetary carrier (21) are configured as power input ends of the differential(100); and a revolution radius of the first planetary gear(12) is different from a revolution radius of the second planetary gear(22). A power transmission system and a vehicle which comprises the differential(100) are also provided. The differential(100) is spur gears type, thus it is simple to be manufactured.
Abstract:
A hybrid electric vehicle, a drive control method and a drive control device of a hybrid electric vehicle are provided. The drive control method includes: obtaining a current gear position of the hybrid electric vehicle and a current electric charge level of a power battery; obtaining a slope of a road on which the hybrid electric vehicle is driving, if the current gear position of the hybrid electric vehicle and the current electric charge level of the power battery meet a preset requirement; and controlling an engine and/or a motor of the hybrid electric vehicle to operate according to the slope of the road on which the hybrid electric vehicle is driving.
Abstract:
A vehicle stability control system includes a signal collection sensor and a vehicle controller (10). The signal collection sensor is configured to collect a vehicle condition information parameter, and the vehicle controller (10) is configured to calculate a control yaw moment according to the vehicle condition information parameter. The control yaw moment is used to cancel a difference between an estimated yaw moment and an actual yaw moment. The vehicle controller (10) is further configured to determine according to the vehicle condition information parameter whether the vehicle (100) is in a stable region or a non-stable region in the case of tire blow-out, and allocate the control yaw moment to four wheels (101) according to a vehicle stability condition, thus implementing vehicle stability control. A vehicle stability control method and a vehicle (100) with the vehicle stability control system are also disclosed.
Abstract:
An auxiliary steering system (100) and method for an electric vehicle and the electric vehicle are disclosed. The system includes a detection component (6A) including a first electric motor (4) and a detection controller (6) configured to determine whether a steering assist device (2) is normal, to continue to determine whether the steering assist device (2) is normal if yes, and to control a drive rack (5A) of the first electric motor (4) to drive wheels (17) of the electric vehicle to return and to output a steering failure signal, a steering wheel torque signal and a direction signal if no; an electric motor controller (8); a second electric motor (14); and a vehicle controller (7). The electric motor controller (8) is further configured to control the second electric motor (14) to increase a drive torque for an outer front wheel (17), to brake an inner rear wheel (17), and to stop driving an inner front wheel (17) and an outer rear wheel (17).
Abstract:
A method and a system for controlling a vehicle (100) with four-wheel drive are provided. The method includes: acquiring a vehicle condition information parameter by a vehicle condition information collector; obtaining a radius of turning circle to be reduced from a driver by a turning circle receiver (40); obtaining a controlling yaw moment corresponding to the radius of turning circle to be reduced according to the vehicle condition information parameter and the radius of turning circle to be reduced by a turning circle controller (11); and distributing the controlling yaw moment to four wheels (90) of the vehicle (100) according to an intensity level of the radius of turning circle to be reduced and the vehicle condition information parameter by the turning circle controller (11), such that the vehicle (100) turns circle.
Abstract:
A method for starting an engine of a hybrid vehicle is provided. The method includes: detecting a speed of the hybrid vehicle when receiving an instruction to start the engine; and outputting an inertia torque generated by a transmission of the hybrid vehicle to a crankshaft of the engine to start the engine when the speed is larger than or equal to a predetermined speed. Further, a system for starting an engine of a hybrid vehicle and a hybrid vehicle including the system are provided.