System for controlling braking/traction of an electric or hybrid vehicle

A system for controlling braking/traction of an electric or hybrid vehicle, comprising:

• a vehicle control unit configured to receive a braking or traction request, said vehicle control unit being configured to determine a braking or traction target value to be imparted to the vehicle, based on said braking or traction request;
• a vehicle braking/traction control unit operatively connected to said vehicle control unit,
• the vehicle braking/traction control unit being configured to be operatively connected to at least one first electric motor of a braking/traction system of the vehicle, operatively connected to at least one first axle of the vehicle, the vehicle braking/traction control unit being configured to control the at least one first electric motor,
• the vehicle braking/traction control unit being configured to be operatively connected to at least one first dissipative braking torque actuation module of the braking/traction system of the vehicle, operatively connected to the at least one first axle, the vehicle braking/traction control unit being configured to control the at least one first dissipative braking torque actuation module;
• a battery pack operatively connected to the vehicle braking/traction control unit, the battery pack being configured to store electricity during a braking phase of the vehicle to be supplied to the at least one first electric motor during a traction phase of the vehicle;
• the vehicle braking/traction control unit is configured to:
• receive the braking or traction target value to be imparted to the vehicle determined by the vehicle control unit of the vehicle based on said braking or traction request;
• receive first input information representative of the battery pack;
• receive second input information representative of a regenerative braking or traction phase performed by the system on the braking/traction system by means of the at least one first electric motor;
• receive third input information representative of a dissipative braking phase performed by the system on the braking/traction system of the vehicle by means of the at least one first dissipative braking torque actuation module;
• receive fourth input information representative of an operating condition of the at least one first axle or a vehicle corner connected to the at least one first axle;
• determine a first regenerative braking torque or traction target value to be imparted to the vehicle by means of the at least one first electric motor based on the braking or traction target value to be imparted to the vehicle, the first input information, the second input information, the third input information, and the fourth input information;
• determine a first dissipative braking torque target value or a first hydraulic pressure target value to be imparted to the vehicle by means of the at least one first dissipative braking torque actuation module, based on the braking or traction target value to be imparted to the vehicle, the first input information, the second input information, the third input information, and the fourth input information.

A method for controlling braking/traction of an electric or hybrid vehicle, comprising steps of:

• receiving, by a vehicle control unit, a braking or traction request;
• determining, by the vehicle control unit, a braking or traction target value to be imparted to the vehicle, based on said braking or traction request;
• receiving, by a vehicle braking/traction control unit operatively connected to said vehicle control unit, the braking or traction target value to be imparted to the vehicle determined by the vehicle control unit based on said braking or traction request;
• receiving, by the vehicle braking/traction control unit, first input information representative of a battery pack operatively connected to the vehicle braking/traction control unit, the battery pack being configured to store electricity during a braking phase of the vehicle to be supplied to at least one first electric motor, of a braking/traction system of the vehicle, operatively connected to at least one first axle of the vehicle, during a traction phase of the vehicle, the vehicle braking/traction control unit being operatively connected to the at least one first electric motor, the vehicle braking/traction control unit being configured to control the at least one first electric motor;
• receiving, by the vehicle braking/traction control unit, second input information representative of a regenerative braking or traction phase performed by the system on the braking/traction system of the vehicle by means of the at least one first electric motor;
• receiving, by the vehicle braking/traction control unit, third input information representative of a dissipative braking phase performed by the system on the braking/traction system of the vehicle by means of at least one first dissipative braking torque actuation module of the braking/traction system of the vehicle, the vehicle braking/traction control unit being operatively connected to the at least one first dissipative braking torque actuation module, the vehicle braking/traction control unit being configured to control the at least one first dissipative braking torque actuation module;
• receiving, by the vehicle braking/traction control unit, fourth input information representative of an operating condition of the at least one first axle or a vehicle corner connected to the at least one first axle;
• determining, by the vehicle braking/traction control unit, a first regenerative braking torque or traction target value to be imparted to the vehicle by means of the at least one first electric motor, based on the braking or traction target value to be imparted to the vehicle, the first input information, the second input information, the third input information, and the fourth input information;
• determining, by the vehicle braking/traction control unit, a first dissipative braking torque target value or a first hydraulic pressure target value to be imparted to the vehicle by means of the at least one first dissipative braking torque actuation module, based on the braking or traction target value to be imparted to the vehicle, the first input information, the second input information, the third input information, and the fourth input information.