Roadside handling for alternate-propulsion systems

• US 8,781,657 B2
• Filed: 05/21/2010
• Issued: 07/15/2014
• Est. Priority Date: 05/21/2010
• Status: Active Grant

• Current Assignee: General Motors LLC (General Motors Company)
• Original Assignee: General Motors LLC (General Motors Company)
• Inventors: Pebbles, Paul H.
• Primary Examiner(s): Algahaim, Helal A
• Assistant Examiner(s): PATEL, SHARDUL D
• Application Number:
  US12/785,011
• Publication Number:
  US 20110288700A1
• Time in Patent Office: 1,516 Days
• Field of Search: 701/22, 701/33, 702/183, 180/277
• US Class Current: 701/22
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H

Abstract

The described method and system allow a service provider to remotely interact with a vehicle analysis system, high voltage battery contactors, and other vehicle systems to eliminate certain sources of inconvenience for service personnel and users. For example, when the high voltage battery contactors are disconnected inadvertently or as a precaution, they may later need to be safely reengaged to allow the user to drive the disabled but otherwise operational vehicle. Conversely, when an electric vehicle has become disabled and needs to be towed or serviced, the disengagement of the high voltage battery contactors as well as the activation or deactivation of related systems will assist the servicing entity in properly moving and servicing the vehicle.

Claims

1. A method for preparing an electric vehicle for use, the vehicle having one or more high voltage contactors to convey electrical power from a battery of the electric vehicle to one or more systems of the vehicle, the method comprising:

detecting a condition that requires disengagement of the one or more high voltage contactors;

disengaging the one or more high voltage contactors;

transmitting, to a remotely located server, a user request to reengage the high voltage contactors from a user of the electric vehicle;

initiating a safety check protocol to verify an absence of any condition that would warrant disengagement, wherein initiating the safety check protocol comprises remotely triggering the safety check protocol via a telematics unit within the vehicle; and

reengaging the high voltage contactors if the safety check protocol verifies an absence of any condition that would warrant disengagement.

2. The method according to claim 1, wherein detecting a condition that requires disengagement of the one or more high voltage contactors comprises detecting such a condition at a telematics unit within and associated with the electric vehicle.

3. The method according to claim 1, wherein detecting a condition that requires disengagement of the one or more high voltage contactors comprises detecting a condition that presents a risk to one of personnel safety and vehicle safety.

4. The method according to claim 1, wherein disengaging the one or more high voltage contactors comprise electrically energizing or de-energizing the contactors to disengage them.

5. The method according to claim 1, wherein disengaging the one or more high voltage contactors comprise electrically de-energizing or de-energizing the contactors to disengage them.

6. The method according to claim 1, wherein the request to reengage the high voltage contactors comprises a service provider operator request pursuant to a user report.

7. The method according to claim 1, wherein initiating a safety check protocol to verify the absence of any condition that would warrant disengagement comprises triggering the safety check protocol by a telematics unit within the vehicle.

8. The method according to claim 1, wherein reengaging the high voltage contactors if the safety check protocol is successfully completed comprises reengaging the high voltage contactors if no vehicle malfunctions are detected.

9. The method according to claim 1, wherein reengaging the high voltage contactors if the safety check protocol is successfully completed comprises reengaging the high voltage contactors if no vehicle malfunctions relating to personnel safety are detected.

10. The method according to claim 1, further comprising re-executing the safety check protocol one or more times if the safety checks protocol detects a condition that would warrant disengagement.

11. A non-transitory computer-readable medium having computer-executable instructions stored thereon for preparing an electric vehicle for use, the vehicle having one or more high voltage contactors to convey electrical power from a battery of the electric vehicle to one or more systems of the vehicle, the computer-executable instructions comprising instructions for:

detecting a condition that requires disengagement of the one or more high voltage contactors;

disengaging the one or more high voltage contactors;

transmitting, to a remotely located server, a user request to reengage the high voltage contactors from a user of the electric vehicle;

initiating a safety check protocol to verify an absence of any condition that would warrant disengagement, wherein initiating the safety check protocol comprises remotely triggering the safety check protocol via a telematics unit within the vehicle; and

reengaging the high voltage contactors if the safety check protocol verifies an absence of any condition that would warrant disengagement.

12. The non-transitory computer-readable medium according to claim 11, wherein detecting a condition that requires disengagement of the one or more high voltage contactors comprises detecting a condition that presents a risk to one of personnel safety and vehicle safety.

13. The non-transitory computer-readable medium according to claim 11, wherein disengaging the one or more high voltage contactors comprise electrically energizing or de-energizing the contactors to disengage them.

14. The non-transitory computer-readable medium according to claim 11, wherein reengaging the high voltage contactors if the safety check protocol is successfully completed comprises reengaging the high voltage contactors if no vehicle malfunctions are detected.

15. The non-transitory computer-readable medium according to claim 11, wherein reengaging the high voltage contactors if the safety check protocol is successfully completed comprises reengaging the high voltage contactors if no vehicle malfunctions relating to personnel safety are detected.

16. The non-transitory computer-readable medium according to claim 11, wherein the computer-executable instructions further comprising re-executing the safety check protocol one or more times if the safety checks protocol detects a condition that would warrant disengagement.