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US 2025/0018801 A1Published application
Commercial Electric Vehicle Braking Systems
AssigneeHarbinger Motors Inc.
InventorsJue Wang, Alexi Charbonneau
Life of this patent
Estimating the term…
Abstract
Described herein are methods and systems for operating a braking system of a commercial electric vehicle. In various embodiments, the braking system may include a plurality of electric brake control modules. The electric brake control modules may be configured to operate the brakes on different axles of the vehicle. One or more of the electric brake control modules may be configured to detect a fault with another electric brake control module and operate the brakes of the vehicle accordingly.
Claims20
A vehicle comprising:
- a chassis;
- a first wheel/tire assembly coupled to the chassis;
- a second wheel/tire assembly coupled to the chassis;
- an electric motor configured to power the second wheel/tire assembly;
- a first pedal position sensor, configured to detect a position of a brake pedal and provide first pedal position data;
- a first brake, configured to provide first deceleration torque to the first wheel/tire assembly;
- a electronic brake front module (EBFM), comprising:
- a first electronic control unit (ECU);
- and
- a first pressure management device, electrically coupled to the first ECU and comprising a first hydraulic cylinder and a first electric motor, the first electric motor configured to, based on first electrical commands received from the first ECU, cause the first hydraulic cylinder to generate first hydraulic pressure to operate the first brake;
- a second brake, configured to provide second deceleration torque to the second wheel/tire assembly and comprising a rear caliper and an electronic parking brake (EPB);
- a electronic brake rear module (EBRM), physically separate from the EBFM and comprising:
- a second ECU;
- and
- a second pressure management device, electrically coupled to the second ECU and comprising a second hydraulic cylinder and a second electric motor, the second electric motor configured to, based on second electrical commands received from the second ECU, cause the second hydraulic cylinder to generate second hydraulic pressure to operate the second brake;
- wherein, in a first configuration, the first ECU is configured to:
- receive the first pedal position data;
- determine that the first pedal position data indicates a first braking request;
- determine, based on the first pedal position data, a first total deceleration torque;
- determine a regen deceleration amount produced by the electric motor;
- determine, based on the first total deceleration torque and the regen deceleration amount, a first brake torque target and a second brake torque target, wherein a total deceleration provided by a sum of the first brake torque target, the brake torque target, and the regen deceleration amount equals the first total deceleration torque;
- electrically operate the first pressure management device to hydraulically operate the first brake in accordance with the first brake torque target;
- and
- communicate, to the second ECU, the second brake torque target;
- and
- wherein, in the first configuration, the second ECU is configured to:
- receive the second brake torque target;
- and
- electrically operate the second pressure management device to hydraulically operate the rear caliper of the second brake based on the second brake torque target.
26 more elements
A system comprising:
- a first pedal position sensor, configured to detect a position of a brake pedal and provide first pedal position data;
- a first brake;
- an electric motor;
- a electronic brake front module (EBFM), comprising:
- a first electronic control unit (ECU);
- and
- a first pressure management device, electrically coupled to the first ECU and comprising a first hydraulic cylinder and a first electric motor, the first electric motor configured to, based on first electrical commands received from the first ECU, cause the first hydraulic cylinder to generate first hydraulic pressure to operate the first brake;
- a second brake, comprising a rear caliper and an electronic parking brake (EPB);
- a electronic brake rear module (EBRM), physically separate from the EBFM and comprising:
- a second ECU;
- and
- a second pressure management device, electrically coupled to the second ECU and comprising a second hydraulic cylinder and a second electric motor, the second electric motor configured to, based on second electrical commands received from the second ECU, cause the second hydraulic cylinder to generate second hydraulic pressure to operate the second brake;
- wherein, in a first configuration, the first ECU is configured to:
- receive the first pedal position data;
- determine that the first pedal position data indicates a first braking request;
- determine, based on the first pedal position data, a first total deceleration torque;
- determine a regen deceleration amount produced by the electric motor;
- determine, based on the first total deceleration torque and the regen deceleration amount, a first brake torque target and a second brake torque target, wherein a total deceleration provided by a sum of the first brake torque target, the brake torque target, and the regen deceleration amount equals the first total deceleration torque;
- electrically operate the first pressure management device to hydraulically operate the first brake in accordance with the first brake torque target;
- and
- communicate, to the second ECU, the second brake torque target;
- and
- wherein, in the first configuration, the second ECU is configured to:
- receive the second brake torque target;
- and
- electrically operate the second pressure management device to hydraulically operate the rear caliper of the second brake based on the second brake torque target.
23 more elements
Dependencies are inferred from the claim text.