Electric power supply system and vehicle

• US 8,169,183 B2
• Filed: 04/18/2008
• Issued: 05/01/2012
• Est. Priority Date: 05/17/2007
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Obayashi, Kazuyoshi
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): OMAR, AHMED H
• Application Number:
  US12/451,241
• Publication Number:
  US 20100090524A1
• Time in Patent Office: 1,474 Days
• Field of Search: 320/104
• US Class Current: 320/104
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/31 Charging columns specially adapted for electric vehicles
• CPC Class Codes: B60L 53/35 Means for automatic or assisted adjustment of the relative position of charging devices and 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: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 3/322 the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
• 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 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 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]
• CPC Class Codes: Y04S 30/12 Remote or cooperative charging
• CPC Class Codes: Y10S 903/903 : having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/907 : Electricity storage, e.g. battery, capacitor

Abstract

An electric automobile has a battery and also has a travel motor and a vehicle interior load device which operate using electric power from the battery. In response to a request for a start of electric power supply to the vehicle interior load device with the automobile being at a standstill, the electric automobile determines, based on the charged state of the battery, whether electric power from the battery can be supplied to the vehicle interior load device. When determining that the electric power from the battery cannot be supplied to the vehicle interior load device, the electric automobile makes a request to an electric power supply device to supply electric power to the vehicle interior load device. In response to the request, the electric power supply device electrically connects to the vehicle interior load device and starts supply of electric power to the vehicle interior load device.

Claims

1. A vehicle including a battery, and a vehicle interior load device which operates using electrical power from the battery, the vehicle comprising:

an electric power requesting section which makes a request to an electrical power supply device that charges the battery using electric power from a commercial electric power source system for supplying electric power to the vehicle interior load device, in accordance with a demand for supplying electric power to the vehicle interior load device when the vehicle is at a standstill; and

an electric power reception section which receives electric power to the vehicle interior load device supplied in accordance with the request, from the electric power supply device, wherein

if the vehicle interior load device for which supply of electric power is demanded is a particular vehicle interior load device, the electric power supply requesting section requests the electric power supply device to supply electric power to the vehicle interior load device even when an ignition switch of the vehicle is off, and if the vehicle interior load device is not a particular vehicle interior load device, the electric power supply requesting section requests a control section which controls charging and discharging of the battery to supply electric power from the battery to the vehicle interior load device even when the ignition switch is off.