Charging sequence control of a power electronics system

Patent metadata

Field	Value
Publication number	US-11108252-B2
Application number	US-201916556398-A
Country	US
Kind code	B2
Filing date	Aug 30, 2019
Priority date	Sep 3, 2018
Publication date	Aug 31, 2021
Grant date	Aug 31, 2021

Abstract

A method for charging sequence control of a power electronics system, in which a charging power is provided by the power electronics system, in which a charging unit, which is operated by a user and which transfers the charging power to a battery, is controlled by a charging control system. A communication exchange is carried out at least between a control device of the power electronics system and the charging control system, in which a plurality of charging process states are predetermined, in which sequences between the charging process states are stored in a program sequence plan and in which the program sequence plan is used for charging sequence control of the power electronics system. For the event of a fault the charging process states “Not ready to charge” and “Fault in charging process” are predetermined.

First claim

What is claimed is:

1. A method for charging sequence control of a power electronics system, in which a charging power is provided by the power electronics system, the method comprising:
controlling a charging unit, which is operated by a user and which transfers the charging power to a battery, using a charging control system,
carrying out a communication exchange at least between a control device of the power electronics system and the charging control system, in which a plurality of charging process states are predetermined, in which sequences between the charging process states are stored in a program sequence plan, and in which the program sequence plan is used for charging sequence control of the power electronics system,
proceeding from a switch-on process, predetermining the charging process states “Initialization,” “Ready to charge,” “Initialization of charging interface,” “Insulation measurement,” “Precharging,” “Charging,” “End charging process,” “Charging process terminated,” and for the event of a fault the charging process states “Not ready to charge” and “Fault in charging process,”
wherein the respective charging process state is supplied with at least one respective task and/or is formed by at least one respective piece of state information coupled to the respective charging process state,
forming the communication exchange with the charging control system by at least one of the pieces of state information,
wherein, if no fault arises, a change is made to a respective next charging process state as soon as a respective task is ended and/or a change is triggered by communication exchange with the charging control system, and
wherein, if a fault arises, a change is made to the charging process states “Fault in the charging process” or “Not ready to charge” and a change is made to the charging process state “Ready to charge” after the fault has been eliminated.

2. The method as claimed in claim 1 , in which the control device of the power electronics system is formed by a power electronics control device.

3. The method as claimed in claim 1 , in which the control device of the power electronics system is formed by a ChargeBox controller.

4. The method as claimed in claim 1 , in which the power electronics system, including control device, and the charging control system are arranged in a physically separated manner.

5. The method as claimed in claim 1 , in which the communication exchange is performed by Ethernet and/or powerline communication and/or WLAN and/or LAN and/or CAN bus and/or mobile radio.

6. The method as claimed in claim 1 , further comprising performing a rapid charging process, a high charging power of which is provided either by a high direct-voltage or a high direct current.

7. A system for charging sequence control of the power electronics system, comprising:
the power electronics system,
the control device for the power electronics system and the charging unit, which comprises the charging control system,
wherein the system is configured, in order to charge the battery of an electric vehicle, to carry out the method as claimed in claim 1 by way of charging sequence control on the respective control device for the power electronics system and the charging control system.

8. The system as claimed in claim 7 , in which the control device for the power electronics system is a power electronics control device.

9. The system as claimed in claim 7 , in which the control device for the power electronics system is a ChargeBox controller.

10. The system as claimed in claim 7 , further comprising a CoolingBox, a charging plug on the charging station, a charging plug control device and an electric vehicle fitted with the battery.

11. The method as claimed in claim 1 , wherein if the fault arises during the “Initialization” state, the change is made to the charging process state “Not ready to charge”.

12. The method as claimed in claim 1 , when the change is made to the charging process state “Fault in the charging process,”
a change is made to the charging process state “Not ready to charge” if the fault cannot be eliminated within predetermined parameters, and
a change is made to the charging process state “Ready to charge” only after a readiness to charge has been re-established.

Assignees

• Porsche Ag

Inventors

• Heyne Raoul
• Kaul Timo

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J7/70

  characterised by the mechanical construction · CPC title

• H02J7/50 Primary

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J7/40

  characterised by the exchange of charge or discharge related data · CPC title

• B60L3/04 Primary

  Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) · CPC title