Vehicle speed limiter based on filtered battery current

• Main Authors: MARCH ZACHARY, BOLGER BRYAN MICHAEL, LEPIDI, GIORGIO, SEMENOV SERGEY GRIGORIEVICH
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a vehicle speed limiter based on filtered battery current. According to one embodiment, a vehicle includes a motorized propulsion system having an electric machine powered by a traction battery over a power distribution system (EDS). A controller is programmed to reduce a speed limit of the vehicle from a maximum speed limit to the EDS speed limit in response to a measured average current of the EDS being within a threshold percentage of an average current limit of the EDS, and to reduce a speed limit of the vehicle from a maximum speed limit to the EDS speed limit in response to a measured speed of the vehicle exceeding the EDS speed limit. A torque less than a driver required torque is commanded to the electric machine such that the vehicle is propelled at a speed below the EDS speed limit. 本公开提供了"基于滤波的电池电流的车辆速度限制器"。根据一个实施例，车辆包括电动化推进系统，所述电动化推进系统具有电机，所述电机在配电系统(EDS)上由牵引电池供电。控制器被编程为响应于所述EDS的测得的平均电流在所述EDS的平均电流限制的阈值百分比内，将所述车辆的速度限制从最大速度限制降低到所述EDS速度限制，并且响应于所述车辆的测得的速度超过所述EDS速度限制，向所述电机命令小于驾驶员要