US 12,344,100 B2
Device and method for providing operating energy for an auxiliary drive for an electric vehicle, and electric vehicle
Frank Seemann, Euerbach (DE); Andre Ehrsam, Bergrheinfeld (DE); Martin Mach, Plzen (CZ); Zbynek Stepan, Plzen (CZ); Vladimir Dvorak, Plzen (CZ); Gabriel Scherer, Deggenhausertal (DE); and Matthias Engicht, Bodman-Ludwigshafen (DE)
Assigned to ZF FRIEDRICHSHAFEN AG, Friedrichshafen (DE)
Appl. No. 18/017,356
Filed by ZF FRIEDRICHSHAFEN AG, Friedrichshafen (DE)
PCT Filed Jul. 22, 2021, PCT No. PCT/EP2021/070559
§ 371(c)(1), (2) Date Jan. 20, 2023,
PCT Pub. No. WO2022/018215, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 10 2020 209 314.8 (DE), filed on Jul. 23, 2020.
Prior Publication US 2023/0294518 A1, Sep. 21, 2023
Int. Cl. B60L 1/00 (2006.01); B60L 53/20 (2019.01)
CPC B60L 1/003 (2013.01) [B60L 1/006 (2013.01); B60L 53/20 (2019.02); B60L 2200/40 (2013.01); B60L 2210/40 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus configured to supply operating energy for an auxiliary drive of an electric vehicle, comprising:
a battery interface configured to connect the apparatus to a vehicle battery of the electric vehicle;
an inverter with a first connector for connecting the inverter to the battery interface, and a second connector, wherein the inverter is configured to convert direct voltage present at the first connector into an alternating voltage for a boost function in response to a boost signal and to supply it to the second connector;
a switch device comprising:
a switch connector which connects the switch device to the second connector of the inverter;
an auxiliary interface configured to connect the apparatus to the auxiliary drive; and
a charging interface configured to feed electrical energy into the apparatus,
wherein the switch device is configured to connect the charging interface to the switch connector and to the auxiliary interface using a switch signal;
a control device configured to supply the boost signal for the boost function when a current energy value of the electrical energy present at the charging interface is less than a target value for the operating energy, and to supply an idle signal to deactivate the inverter when the current energy value of the electrical energy present at the charging interface is greater than or equal to the target value for the operating energy,
wherein the control device is designed to read a phase signal which represents a phase position of a charging current present at the charging interface and is designed to supply the boost signal using the phase signal.