ELECTRIC VEHICLE

• US 20120074903A1
• Filed: 04/30/2010
• Published: 03/29/2012
• Est. Priority Date: 06/09/2009
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toyota Jidoshokki
• Original Assignee: Kabushiki Kaisha Toyota Jidoshokki
• Inventors: Nakashima, Yutaka
• Application Number:
  US13/375,317
• Publication Number:
  US 20120074903A1
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• 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 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 53/68 Off-site monitoring or control, e.g. remote control
• CPC Class Codes: G07F 15/005 dispensed for the electrical charging of vehicles electrical charging as such, B60L50/00
• CPC Class Codes: G07F 17/0021 Access to services on a time-basis
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• 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: 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

An electric vehicle suppresses the discharge of an auxiliary battery for supplying electric power to a control circuit for controlling a charging process while performing timer-charging. When the charging start timing set by a user comes after specified elapsed time, the power supply from an internal power supply circuit 35 to a CPU 36 etc. is stopped until the power supply is started from a charging station 12 to an electric vehicle 13. When the stopped power supply is started, the power supply from the internal power supply circuit 35 to the CPU 36 etc. is resumed.

Claims

1. An electric vehicle which charges a battery for driving a vehicle driving motor by electric power supplied from a charging station with charging start timing set by a user, comprising:

a control circuit controlling a charging process when the battery is charged;

an internal power supply circuit supplying electric power obtained from an auxiliary battery to the control circuit; and

a detection circuit detecting the power supplied from the charging station, wherein;

the control circuit stops the power supply from the internal power supply circuit to the control circuit when the charging start timing comes after a specified lapse of time; and

the internal power supply circuit resumes the power supply to the control circuit when the detection circuit detects the power.

2. The vehicle according to claim 1, further comprising

a conversion circuit converting the power supplied from the charging station into a direct current;

and

the internal power supply circuit supplies to the control circuit the power converted into the direct current by the conversion circuit while the charging station is supplying power.