VEHICLE BATTERY FIELD DISCHARGE SYSTEMS AND METHODS

• US 20140132219A1
• Filed: 11/12/2012
• Published: 05/15/2014
• Est. Priority Date: 11/12/2012
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: NAMOU, ANDREW J., MACKINTOSH, TODD F.
• Granted Patent: US 9,024,590 B2
• Time in Patent Office: Days
• US Class Current: 320/127
• CPC Class Codes: B60L 2200/10 Air crafts
• CPC Class Codes: B60L 2200/32 Waterborne vessels
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• 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 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02E 60/10 Energy storage using 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 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: Y04S 10/126 the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

System and methods for discharging a battery system in a vehicle are presented. In certain embodiments, a battery system included in a vehicle may include a high voltage cell stack and at least one access point configured to selectively couple the high voltage cell stack with a discharging system connector associated with a discharging system. The at least one access point may include a receptacle configured to receive the discharging system connector and selectively couple the discharging system connector across the high voltage cell stack to allow for electrical energy to be discharged from the cell stack to an external discharging system.

Claims

1. A battery system included in a vehicle, the battery system comprising:

a high voltage cell stack; and

at least one access point configured to selectively couple the high voltage cell stack with a discharging system connector, the at least one access point comprising;

a receptacle configured to receive the discharging system connector;

one or more high voltage contacts disposed in the receptacle configured to contact with one or more conductors included in the discharging system connector when the discharging system connector is received in the receptacle; and

one or more selectively actuated switches disposed in the receptacle configured to electrically couple the one or more high voltage contacts across the high voltage cell stack when the discharging system connector is received in the receptacle.

2. The battery system of claim 1, wherein the at least one access point is associated with a manual disconnect of the battery system.

3. The battery system of claim 2, wherein the one or more selectively actuated switches are further configured to couple the one or more high voltage contacts across the high voltage cell stack by creating a short across a high voltage bus of the high voltage cell stack.

4. The battery system of claim 1, wherein the at least one access point is associated with a high voltage power feed of the battery system.

5. The battery system of claim 4, wherein the one or more selectively actuated switches are further configured to couple the one or more high voltage contacts across the high voltage cell stack by bypassing one or more power feed switches included in the battery system.

6. The battery system of claim 1, wherein system further comprises a plurality of redundant access points configured to selectively couple the high voltage cell stack with a discharging system connector.

7. The battery system of claim 1, wherein the one or more selectively actuated switches are configured to be actuated by one or more pins included in the discharging system connector when the discharging system connector is received in the receptacle.

8. The battery system of claim 1, wherein at least one of the one or more high voltage contacts or the selectively actuated switches are disposed in one or more recessed channels included in the receptacle.

9. A discharging system configured to discharge a battery system included in a vehicle, the discharging system comprising:

a load configured to consume electrical energy provided by the battery system;

a discharging system connector configured to couple the load to the battery system via at least one access point included in the vehicle, the discharging system connector comprising;

one or more conductors configured to contact one or more high voltage contacts included in the at least one access point when the discharging system connector is received in a receptacle associated with the access point; and

one or more actuators configured to selectively actuate one or more switches to couple the high voltage contacts across a high voltage cell stack of the battery system when the discharging system connector is received in the receptacle.

10. The discharging system of claim 9, wherein the load is configured to consume electrical energy provided by the battery system at a predetermined rate.

11. The discharging system of claim 9, wherein the one or more actuators comprise pins configured to selectively actuate the one or more switches using a spring mechanism.

12. The discharging system of claim 9, wherein the access point is included in a manual disconnect of the battery system.

13. The discharging system of claim 9, wherein the access point is included in a high voltage power feed of the battery system.

14. The discharging system claim 9, wherein the access point is a redundant access point of a plurality of access points included in the vehicle.

15. The discharging system of claim 9, wherein the one or more conductors are configured to contact the one or more high voltage contacts via one or more recessed channels included in the receptacle.

16. The discharging system of claim 9, wherein the one or more actuators are configured to selectively actuate the one or more switches via one or more recessed channels included in the receptacle.

17. A vehicle comprising;

a high voltage battery system; and

a plurality of redundant access points coupled the high voltage battery system, each redundant access point configured to receive a discharging system connector associated with a discharging system configured to discharge the high voltage battery system when coupled to the redundant access point.

18. The vehicle of claim 17, wherein at least one redundant access point of the plurality of redundant access points is included in a manual disconnect.

19. The vehicle of claim 17, wherein at least one redundant access point of the plurality of redundant access points is included in a high voltage power feed for the battery system.

20. The vehicle of claim 17, wherein each redundant access point comprises a receptacle configured to receive a discharging system connector.