Method and apparatus for triggering an emergency shutdown of the inductive charging of a motor vehicle

Patent metadata

Field	Value
Publication number	US-11091040-B2
Application number	US-201716309215-A
Country	US
Kind code	B2
Filing date	Jun 27, 2017
Priority date	Jun 30, 2016
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A method and an apparatus for triggering an emergency shutdown of the inductive charging of a secondary-side component in the form of a motor vehicle by a primary-side component in the form of a charging station, includes a plurality of charging system parts of the secondary-side component. The charging system parts are each configured to interrupt at least one switchable communication channel that connects the charging system parts in order to trigger an emergency shutdown of the inductive charging.

First claim

The invention claimed is:

1. An apparatus for triggering an emergency shutdown of an inductive charging system for a vehicle, the apparatus comprising:
at least two different types of communication channels enabling communication between the vehicle and a charging station in order to trigger an emergency shutdown of the inductive charging system; and
a plurality of escalation levels permitting different emergency shutdown mechanisms to be activated.

2. The apparatus according to claim 1 , wherein said plurality of escalation levels includes one or more of different signaling operations, curbing of charging power in a charging station, a charging stop by a charging station, or electrically disconnecting a motor vehicle drive battery.

3. The apparatus according to claim 2 , wherein said plurality of escalation levels are activated in dependence on a detection of exceeding different limit values.

4. The apparatus according to claim 3 , which further comprises a motor vehicle drive battery module of the vehicle being configured, upon detection of an interruption of said communication channel, to perform an emergency shutdown by disconnecting the vehicle drive battery of the vehicle using at least one drive battery interruption device.

5. The apparatus according to claim 4 , which further comprises one or more charging system parts having at least one wireless transmission device configured to transmit an emergency shutdown request from one part to another part upon a detection of an emergency shutdown triggering in the form of an interruption of said switchable communication channel.

6. The apparatus according to claim 3 , wherein one of said escalation levels includes detecting a temperature of power-carrying components reaching a prescribed first “low” threshold value and switching on a motor vehicle fan.

7. The apparatus according to claim 3 , wherein one of said escalation levels includes detecting a temperature exceeding a prescribed “average” limit value and reducing the charging power.

8. The apparatus according to claim 3 , wherein one of said escalation levels includes detecting a temperature reaching a prescribed “upper” limit value and completely interrupting a power supply.

9. The apparatus according to claim 5 , wherein the charging system parts include at least one of a rectifier module, a battery module, a high-voltage distributor, or a communication controller.

10. The apparatus according to claim 1 , wherein said communication channel includes a transmission device having a WLAN transmission device, a near-field transmission device, or a transmission device using charging coils to transmit an emergency shutdown request.

11. A motor vehicle, comprising:
a motor vehicle inductive charging system for receiving power from a charging station;
the motor vehicle being configured to trigger an emergency shutdown of a charging operation;
the motor vehicle including at least two different types of communication channels configured to communicate with the charging station;
the motor vehicle being configured to communicate a trigger for an emergency shutdown of said inductive charging system via said at least two different types of communication channels; and
a plurality of escalation levels permitting the vehicle to activate different emergency shutdown mechanisms.

12. The vehicle according to claim 11 , which further comprises transmission devices each configured to transmit an emergency shutdown request from the motor vehicle to the charging station to trigger an emergency shutdown at the charging station.

13. The vehicle according to claim 11 , wherein said communication channel includes a WLAN transmission or a near-field transmission or a transmission using charging coils to transmit an emergency shutdown request.

14. The vehicle according to claim 11 , wherein an activation of different emergency shutdown mechanisms is dependent on a detection of exceeding limit values.

15. The vehicle according to claim 11 , wherein the vehicle is configured to measure at least one parameter of at least one of a charging coil or a rectifier module selected from the group consisting of:
temperature,
voltage,
current,
hum voltage and
insulation monitoring, and

the measured parameters are taken into account for a decision about the triggering of an emergency shutdown or a type of emergency shutdown of said inductive charging system.

16. The vehicle according to claim 15 , wherein:
the vehicle includes a plurality of charging system parts being interconnected by a switchable communications channel and interconnected by a further non-switchable or switchable communications channel; and
at least one wireless or wired transmission device is configured to transmit an emergency shutdown request upon detecting an interruption of said switchable communications channel.

17. The vehicle according to claim 14 , which further comprises a further communications channel additionally configured to send a shutdown escalation step request upon a delay of a reaction to a first request.

18. The vehicle according to claim 17 , wherein the shutdown escalation step includes transmitting a power reduction request or an emergency shutdown request.

19. The vehicle according to claim 17 , wherein the vehicle is configured to open a circuit for a vehicle drive battery if no reaction to the first request and no reaction to the shutdown escalation step request occur.

20. A method for triggering an emergency shutdown of the inductive charging of a secondary-side charging system component in the form of a vehicle by a primary-side charging system component in the form of a charging station, the method comprising the following steps:
providing at least two different types of communication channels enabling communication between the vehicle and the charging station in order to trigger an emergency shutdown of the secondary-side charging system; and
communicating, via at least one of said at least two different types of communication channels, a plurality of escalation levels permitting different emergency shutdown mechanisms to be activated.

21. The method according to claim 20 , which further comprises including in the plurality of escalation levels:
at least one of different signaling operations, curbing of a charging power in the charging station, a charging stop by a charging device, or an electrical disconnection of a vehicle drive battery.

22. The method according to claim 20 , which further comprises activating the plurality of escalation levels in dependence on a detection of exceeding different limit values.

23. The method according to claim 20 , which further comprises transmitting an emergency shutdown request upon detecting an interruption of the communication channel.

24. The method according to claim 20 , which further comprises using a further communications channel to send a shutdown escalation step request upon a delay of a reaction to a first request.

25. The method according to claim 24 , which further comprises opening a circuit for a vehicle drive battery if no reaction to the first request and no reaction to the shutdown escalation step request occur.

Assignees

• Continental Automotive Gmbh
• Vitesco Tech Gmbh

Inventors

• Roehrl Thomas
• Bartz Stephan
• Lex Gerhard

Classifications

• Y02T90/12

  Electric charging stations · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• Y02T90/16

  Information or communication technologies improving the operation of electric vehicles · CPC title