Method for Operating a Charging Device, Charging Device and Motor Vehicle

Patent metadata

Field	Value
Publication number	US-2018159360-A1
Application number	US-201715827149-A
Country	US
Kind code	A1
Filing date	Nov 30, 2017
Priority date	Dec 6, 2016
Publication date	Jun 7, 2018
Grant date	—

Abstract

A method for operating a charging device for a battery of a motor vehicle. The charging device converts electric power obtained from a motor vehicle-external, three-phase energy system supplying other consumers in an infrastructure unit, in particular a house, by a converter device into an electric current that is suitable for charging the battery, and supplies electric energy of the battery by the converter device into the energy system. The charging device receives in an operating phase phase-resolved power data, which is fed to the energy system and measured by a measuring device, and determines phase-specified target power while using phase-related power data outputs for each phase. The target power that is determined for each phase is retrieved from each phase.

First claim

1 . A method for operating a charging device for a battery of a motor vehicle, wherein the charging device converts electric power obtained from a motor vehicle-external three-phase electric energy system supplying other users of an infrastructure unit, by a converter device, to an electric current that is suitable for charging the battery and that supplies the electric energy of the battery by the converter device into the energy system, wherein the charging device receives phase-resolved power data of an incoming electric power supplied into the energy system measured in an operating phase by a measuring device, and determines phase-related target power outputs for each phase while using the power data, wherein the target power determined for each phase is retrieved from the phase.

2 . The method according to claim 1 , wherein the power data includes a currently effective power per phase.

3 . The method according to claim 1 , wherein idle power is received with the power data by the measuring device, wherein the idle power describing the power data is used for a phase-differentiated idle power compensation for the entire energy system by a compensation component on the side of the charging device.

4 . The method according to claim 1 , wherein the target power outputs are used to maximize the overall load of the individual phase and the charging device power which can be used for charging operations and for discharging operations.

5 . The method according to claim 1 , wherein the target power outputs are updated and applied in real time.

6 . The method according to claim 1 , wherein the charging device is provided with a power electronics component assigned to each phase, wherein the target power is set by activating the respective power electronics component.

7 . The method according to claim 1 , wherein a maximum charging device power of more than 10 kW and of a motor vehicle-external direct current fast charger device is used, which is designed as the charging device.

8 . The method according to claim 1 , wherein the charging device is used at least partially in the interior and at least partially outside of a motor vehicle.

Assignees

• Audi Ag

Inventors

• Enthaler Achim
• Mürken Michael
• Thanheiser Andreas
• Krammer Johann

Classifications

• H02J7/96

  in response to battery voltage · CPC title

• H02J7/94

  in response to battery current · CPC title

• B60L2240/526

  Operating parameters · CPC title

• H02J7/02 Primary

  for charging batteries from AC mains by converters · CPC title

• H02J3/1807

  using series compensators, e.g. thyristor-controlled series capacitors [TCSC] · CPC title