ELECTRIC POWER SUPPLY SYSTEM

• US 20120212181A1
• Filed: 02/17/2012
• Published: 08/23/2012
• Est. Priority Date: 02/18/2011
• Status: Abandoned Application

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Tsuchiya, Shizuo
• Application Number:
  US13/399,127
• Publication Number:
  US 20120212181A1
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 2270/44 Heat storages, e.g. for cabin heating
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• 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

Abstract

An electric power supply system has a sub breaker arranged in a sub line electrically connected with a power line to intercept an electrical link between a main breaker and the sub line if a predetermined value of current flows through the sub line. A current detector is arranged in the sub line to detect a value of current supplied to an energy storing portion. A controller causes a battery of a vehicle to store electricity with an electric current equal to or lower than a current value that is calculated by subtracting the value of current detected by the current detector from the predetermined value of current set for the sub breaker.

Claims

1. An electric power supply system that is supplied with electric power from an electric power supplier through a power line based on an electric power supply contract comprising:

a main breaker arranged in the power line to intercept an electrical link between the electric power supplier and the power line if a first predetermined value of current flows through the power line;

a sub breaker arranged in a sub line that is electrically connected with the power line to intercept an electrical link between the main breaker and the sub line if a second predetermined value of current flows through the sub line;

an energy storing portion that stores energy by being operated with the electric power supplied from the electric power supplier, the energy storing portion being electrically connected with the sub line;

a current detector arranged in the sub line to detect a value of current supplied to the energy storing portion; and

a controller controlling an energy storing operation of the energy storing portion and controlling an electricity storing operation of a battery of a vehicle when the battery is connected to the sub line, wherein

the controller causes the battery to store electricity with an electric current equal to or lower than a current value that is calculated by subtracting the value of current detected by the current detector from the second predetermined value of current.

2. The electric power supply system according to claim 1, wherein

the controller prohibits the energy storing operation of the energy storing portion when the electricity storing operation of the battery is started in a case where the electricity storing operation of the battery is prior to the energy storing operation of the energy storing portion, and

the controller cancels the prohibition of the energy storing operation when the battery is charged with a predetermined electricity amount.

3. The electric power supply system according to claim 1, wherein

the controller prohibits the electricity storing operation of the battery when the energy storing operation of the energy storing portion is started in a case where the energy storing operation of the energy storing portion is prior to the electricity storing operation of the battery, and

the controller cancels the prohibition of the electricity storing operation of the battery when the energy storing portion stores a predetermined amount of energy.

4. The electric power supply system according to claim 1, wherein

the energy storing portion is a heat storing portion having a heat pump device, and

the heat storing portion operates the heat pump device using the electric power supplied from the electric power supplier, and stores heat as the energy.

5. The electric power supply system according to claim 1, wherein

the controller controls the electricity storing operation of the battery and the energy storing operation of the energy storing portion in a predetermined time range during which a cost of the electric power supplied from the electric power supplier is less expensive than the other time range based on the electric power supply contract.