Charge Disruption Monitoring and Notification System

• US 20130015814A1
• Filed: 07/13/2011
• Published: 01/17/2013
• Est. Priority Date: 07/13/2011
• Status: Abandoned Application

• Current Assignee: Tesla Motors Incorporated (Tesla Inc.)
• Original Assignee: Tesla Motors Incorporated (Tesla Inc.)
• Inventors: Kelty, Kurt Russell, Kohn, Scott Ira
• Application Number:
  US13/182,359
• Publication Number:
  US 20130015814A1
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2250/22 by presence detection
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• 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
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/15 Preventing overcharging
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A system and method for notifying a designated party when an electric vehicle charging operation is unexpectedly disrupted is provided. The system monitors the connection between the electric vehicle and the external battery pack charging source, issues a command to a notification system to send a notification message to the designated party when an interruption is detected, and then issues the notification message in accordance with a set of notification instructions. The notification instructions may include one or more criteria for determining whether the disruption is authorized, thus not requiring the transmittal of the notification message. Criteria for accepting the change in battery pack charging status as authorized includes user/device proximity to the vehicle, achievement of a target battery pack SOC, and location of the vehicle within a safe zone.

Claims

1. A method of notifying a party when operation of a battery pack charging system for an electric vehicle is disrupted, the method comprising the steps of:

detecting initiation of a connection between said electric vehicle and a battery pack charging source, wherein said battery pack charging source is external to said electric vehicle;

monitoring operation of said battery pack charging system, wherein said step of monitoring operation of said battery pack charging system is performed after said connection between said electric vehicle and said battery pack charging source is detected;

issuing a command to a notification system to send a notification message to said party, wherein said step of issuing said command is performed by a system controller, and wherein said step of issuing said command is performed if a disruption in said operation of said battery pack charging system is detected;

evaluating a set of notification instructions stored in a memory coupled to said notification system upon receipt of said command to send said notification message; and

transmitting said notification message in accordance with said set of notification instructions upon receipt of said command to send said notification message.

2. The method of claim 1, wherein said step of monitoring operation of said battery pack charging system further comprises the step of monitoring connection continuity between said electric vehicle and said battery pack charging source, and wherein said step of issuing said command to said notification system is performed by said system controller if a disruption in said connection between said electric vehicle and said battery pack charging source is detected.

3. The method of claim 1, further comprising the step of determining whether said disruption is authorized, wherein said step of determining whether said disruption is authorized is performed prior to said step of transmitting said notification message, and wherein said step of transmitting said notification message is not performed if said disruption is authorized.

4. The method of claim 3, wherein said step of determining whether said disruption is authorized further comprises the step of detecting whether or not an authorized device is proximate to said electric vehicle, wherein if said authorized device is proximate to said electric vehicle then said disruption is authorized.

5. The method of claim 4, wherein said step of detecting whether or not said authorized device is proximate to said electric vehicle further comprises the step of monitoring for a pre-identified radio-frequency identification signal proximate to said electric vehicle, wherein said pre-identified radio-frequency identification signal corresponds to said device.

6. The method of claim 3, wherein said step of determining whether said disruption is authorized further comprises the steps of determining a present location corresponding to said electric vehicle, comparing said present location to at least one predefined safe zone contained within said set of notification instructions, and authorizing said disruption if said present location corresponds to said predefined safe zone.

7. The method of claim 6, wherein said step of determining said present location corresponding to said electric vehicle further comprises the step of monitoring a GPS subsystem coupled to said system controller.

8. The method of claim 3, wherein said step of determining whether said disruption is authorized further comprises the steps of monitoring a current state-of-charge (SOC) level corresponding to an electric vehicle battery pack, comparing said current SOC level to a preset target SOC level, and authorizing said disruption if said current SOC level exceeds said preset target SOC level.

9. The method of claim 8, wherein said preset target SOC level is calculated based on said electric vehicle battery pack having sufficient SOC to achieve a preset driving range.

10. The method of claim 9, wherein said preset driving range is calculated based on historical driving patterns of said electric vehicle over a preset period of time.

11. The method of claim 9, wherein said preset driving range is preset by a user of said electric vehicle.

12. The method of claim 9, wherein said preset driving range is calculated based on traveling from a current location to a preset destination provided by a user of said electric vehicle.

13. The method of claim 3, wherein said step of determining whether said disruption is authorized further comprises the steps of monitoring a current operating parameter corresponding to an electric vehicle battery pack, comparing said current operating parameter to a preset target range for said operating parameter, and authorizing said disruption if said current operating parameter is within said preset target range.

14. The method of claim 13, wherein said current operating parameter is a current battery pack temperature, and wherein said preset target range is a preset range of temperatures.

15. The method of claim 3, wherein said step of determining whether said disruption is authorized further comprises the steps of monitoring a current operating parameter corresponding to an electric vehicle battery pack, comparing said current operating parameter to a preset target range for said operating parameter, and authorizing said disruption if said current operating parameter is outside of said preset target range.

16. The method of claim 15, wherein said current operating parameter is a current battery pack temperature, and wherein said preset target range is a preset range of temperatures.

17. The method of claim 1, further comprising the step of accepting said set of notification instructions and storing said set of notification instruction in said memory, wherein a user inputs said set of notification instructions via a user interface in communication with said system controller.

18. The method of claim 17, wherein said set of notification instructions includes a preferred notification message format.

19. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of transmitting said notification message via an over-the-air RF communication system.

20. The method of claim 19, wherein said over-the-air RF communication system is selected from the group consisting of cellular wireless systems and satellite-based wireless systems.

21. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of transmitting a text message.

22. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of transmitting an email message.

23. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of transmitting a pre-recorded verbal message.

24. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of posting said notification message on a web page.

25. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of transmitting said notification message to a third party notification system.

26. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of posting said notification message, wherein after said posting step said notification message may be acquired by an application running on an independent device.

27. The method of claim 1, wherein said step of transmitting said notification message further comprises the step of activating an alarm system mounted to said electric vehicle.

28. A notification system for use with an electric vehicle, comprising:

an electric vehicle charging system coupleable to a power source, wherein said power source is external to said electric vehicle, and wherein said power source provides charging power for a battery pack mounted within said electric vehicle, said battery pack providing power for at least one drive train motor;

a power source monitor mounted within said electric vehicle and configured to monitor a battery pack charging status, wherein said monitor detects when said power source is coupled to said electric vehicle charging system;

a system controller coupled to said power source monitor, said system controller configured to receive a first status signal from said power source monitor when said power source is coupled to said electric vehicle charging system and to receive a second status signal from said power source monitor when a disruption in operation of said electric vehicle charging system power source is detected, wherein said system controller is configured to issue a notification command upon detection of a change in said battery pack charging status as evidenced by receipt of said second status signal after receipt of said first status signal, and wherein said system controller is configured to issue said notification command in accordance with a set of notification instructions; and

a notification system coupled to said system controller, wherein said notification system is configured to transmit a notification message to a party externally located from said electric vehicle upon receipt of said notification command issued by said system controller.

29. The notification system of claim 28, further comprising a memory coupled to said system controller, wherein said memory stores said set of notification instructions.

30. The notification system of claim 28, wherein said set of notification instructions includes at least one criteria for accepting said change in said battery pack charging status as authorized, and wherein said system controller is configured to not issue a notification command when said change in said battery pack charging status is authorized.

31. The notification system of claim 30, wherein said criteria for accepting said change in said battery pack charging status as authorized includes at least one of user proximity to said electric vehicle, achievement of a target battery pack state-of-charge, and location of said electric vehicle in a safe zone.