Braking system for electric vehicle, control method, and electric vehicle
AssigneeHuawei Digital Power Technologies Co., Ltd.
InventorsDehua Zeng, Jiayu Tang, Chongxi Huang, Hui Ni
Life of this patent
Estimating the term…
Abstract
A braking system, a method, and an electric vehicle. The braking system includes a central controller and a plurality of wheel end braking apparatuses. Each wheel end braking apparatus is configured to output braking force to a brake disc of one wheel to brake the electric vehicle. The central controller is configured to control wheel end braking apparatuses corresponding to rear wheels of the electric vehicle to output braking force to implement drifting.
Claims20
A braking system for an electric vehicle, the system comprising:
- a central controller;
- and
- a plurality of wheel end braking apparatuses,
- the plurality of wheel end braking apparatuses are in a one-to-one correspondence with a plurality of wheels of the electric vehicle, the plurality of wheels comprise front wheels and rear wheels, and each wheel end braking apparatus is configured to output braking force to a brake disc of one of the wheels to brake the electric vehicle;
- and
- the central controller is configured to:
- in a traveling process in which a vehicle speed of the electric vehicle is greater than a vehicle speed threshold, when an opening of an accelerator pedal of the electric vehicle is less than an accelerator threshold, an opening of a brake pedal of the electric vehicle is less than a braking threshold, a rotation angle of a steering wheel of the electric vehicle is greater than an angle threshold, and a steering angle of the electric vehicle is less than a drifting threshold, control wheel end braking apparatuses corresponding to the rear wheels of the electric vehicle to output braking force.
A method for an electric vehicle, wherein the electric vehicle comprises a braking system, the braking system is configured to output braking force to a plurality of wheels of the electric vehicle, the comprising:
- in a traveling process in which a vehicle speed of the electric vehicle is greater than a vehicle speed threshold, when an opening of an accelerator pedal of the electric vehicle is less than an accelerator threshold, an opening of a brake pedal of the electric vehicle is less than a braking threshold, a rotation angle of a steering wheel of the electric vehicle is greater than an angle threshold, and a steering angle of the electric vehicle is less than a drifting threshold, outputting, by the braking system, braking force to rear wheels of the electric vehicle;
- and
- in a process in which the braking system outputs the braking force to the rear wheels, when the steering angle of the electric vehicle increases to be greater than or equal to the drifting threshold, outputting, by the braking system, braking force to wheels on a side opposite to a steering direction of the electric vehicle.
An electric vehicle, comprising:
- a braking system,
- a drive system,
- an accelerator pedal,
- a brake pedal, and
- a steering wheel, wherein the braking system comprises a central controller and a plurality of wheel end braking apparatuses, the plurality of wheel end braking apparatuses are in a one-to-one correspondence with a plurality of wheels of the electric vehicle, the plurality of wheels comprise front wheels and rear wheels, and each wheel end braking apparatus is configured to output braking force to a brake disc of one of the wheels to brake the electric vehicle;
- and
- the central controller is configured to:
- in a traveling process in which a vehicle speed of the electric vehicle is greater than a vehicle speed threshold, when an opening of an accelerator pedal of the electric vehicle is less than an accelerator threshold, an opening of a brake pedal of the electric vehicle is less than a braking threshold, a rotation angle of a steering wheel of the electric vehicle is greater than an angle threshold, and a steering angle of the electric vehicle is less than a drifting threshold, control wheel end braking apparatuses corresponding to the rear wheels of the electric vehicle to output braking force;
- the accelerator pedal is configured to instruct the drive system to output driving force to wheels of the electric vehicle, and the brake pedal is configured to instruct the braking system to output braking force to a plurality of wheels of the electric vehicle.
Dependencies are inferred from the claim text.