US 12,472,830 B2
Method for controlling an electric drive unit of a vehicle, computer program, computer readable medium, control unit, electric drive unit, and vehicle
Tim Weidke, Hilscheid (DE); Björn Dusemund, Trier (DE); and Krishnent Sanal Kumar, Trier (DE)
Assigned to VOLVO CONSTRUCTION EQUIPMENT AB, Eskilstuna (SE)
Filed by VOLVO CONSTRUCTION EQUIPMENT AB, Eskilstuna (SE)
Filed on Mar. 13, 2024, as Appl. No. 18/603,521.
Claims priority of application No. 23161738 (EP), filed on Mar. 14, 2023.
Prior Publication US 2024/0308352 A1, Sep. 19, 2024
Int. Cl. B60L 15/20 (2006.01)
CPC B60L 15/20 (2013.01) [B60L 2200/40 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2240/429 (2013.01); B60L 2250/28 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for controlling an electric drive unit of a vehicle,
wherein the vehicle comprises:
a drive pedal for providing an actual drive pedal speed request value (SRV) for operating the electric drive unit depending on the degree of operation of the drive pedal, and
the electric drive unit being signaling coupled to the drive pedal via a control unit, wherein the electric drive unit is configured for driving the vehicle depending on the actual drive pedal speed request value (SRV),
the method comprising the steps of:
determining an actual speed value of the electric drive unit;
determining the actual drive pedal speed request value (SRV) depending on the degree of operation of the drive pedal;
determining a maximum current limit function (MAX) of the electric drive unit, wherein the maximum current limit function represents a maximum current limit value of the electric drive unit depending on the actual drive pedal speed request value (SRV);
determining a reduced current limit function (MIN) of the electric drive unit, wherein the reduced current limit function (MIN) represents a reduced current limit value of the electric drive unit depending on the actual drive pedal speed request value (SRV);
mapping each drive pedal speed request value provided by the operated drive pedal
to a respective maximum current limit value of the electric drive unit; and
to a respective reduced current limit value of the reduced current limit function (MIN); and
to a respective desired speed value (DS); and
controlling the electric drive unit
depending on the determined reduced current limit function (MIN) of the electric drive unit if the desired speed value (DS) mapped to the determined actual drive pedal speed request value (SRV) is
similar or equal to the determined actual speed value of the electric drive unit; and
depending on the determined maximum current limit function (MAX) of the electric drive unit if the desired speed value mapped to the determined actual drive pedal speed request value is larger than the determined actual speed value of the electric drive unit.