Power supply device and vehicle including the same

• US 20100001866A1
• Filed: 10/09/2007
• Published: 01/07/2010
• Est. Priority Date: 10/24/2006
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ishikawa, Tetsuhiro, Ichikawa, Shinji
• Granted Patent: US 8,089,243 B2
• Time in Patent Office: Days
• US Class Current: 340/584
• CPC Class Codes: B60L 2240/527 Voltage
• CPC Class Codes: B60L 2240/529 Current
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2250/12 by confirmation, e.g. of the input
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/22 Standstill, e.g. zero speed
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/60 Monitoring or controlling charging stations
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: B60L 58/27 by heating
• 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: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/633 characterised by algorithms, flow charts, software details or the like
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• 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

A power supply device includes a power storage unit capable of being charged and a control unit controlling charging of the power storage unit. Control unit includes a battery ECU for setting, at the start of charging of the power storage unit, a target value of state of charge of the power storage unit to a first value based on the condition of power storage unit and setting, when a temperature increase instruction (change instruction) is received after the start of charging, the target value to a predetermined second value higher than the first value, and a converter ECU for executing the charging process so that the state of charge of the power storage unit attains to the target value.

Claims

1. A power supply device mounted on a vehicle, comprising:

a power storage unit capable of being charged; and

a control unit controlling charging of said power storage unit, said control unit including

a change instruction generation unit generating a change instruction instructing change of state of charge of said power storage unit, based on information representing possibility of use of said vehicle by a user,

a target value setting unit setting, when charging of said power storage unit starts, a target value of state of charge of said power storage unit to a first value based on the condition of said power storage unit, and setting, when said change instruction is received after the start of charging of said power storage unit, said target value to a second value higher than said first value, and

a charge processing unit executing a charging operation based on said target value.

2. The power supply device according to claim 1, wherein

information representing the state of said power storage unit is information of temperature around said power storage unit;

said control unit further includes

an amount of change calculating unit calculating an amount of change in state of charge of said power storage unit necessary to increase temperature of said power storage unit; and

said target value setting unit stores said second value in advance, and calculates said first value by subtracting said amount of change from said second value.

3. The power supply device according to claim 2, wherein

said change instruction generation unit determines a start time of starting change of the state of charge of said power storage unit based on a designated charge end time and said amount of change, and when current time reaches said start time, generates said change instruction.

4. The power supply device according to claim 2, wherein

said change instruction generation unit generates said change instruction in response to a temperature increase request input from outside.

5. The power supply device according to claim 4, wherein

said change instruction generation unit outputs said change instruction when it receives said temperature increase request from a transmission device provided in a house;

and

said transmission device transmits said temperature increase request in response to a result of detection by a sensor detecting a user going out from said house.

6. The power supply device according to claim 4, wherein

said change instruction generation unit outputs said change instruction in response to a remote operation by a user.

7. A vehicle, comprising:

a power supply device,

said power supply device including

a power storage unit capable of being charged, and

a control unit controlling charging of said power storage unit; and

said control unit having

a change instruction generation unit generating a change instruction instructing change of state of charge of said power storage unit, based on information representing possibility of use of said vehicle by a user.

a target value setting unit setting, when charging of said power storage unit starts, a target value of state of charge of said power storage unit to a first value based on the condition of said power storage unit, and setting, when said change instruction is received after the start of charging of said power storage unit, said target value to a second value higher than said first value, and

a charge processing unit executing a charging operation based on said target value.

8. The vehicle according to claim 7, wherein

information representing the condition of said power storage unit is information of temperature around said power storage unit;

said control unit further includes

an amount of change calculating unit calculating an amount of change in state of charge of said power storage unit necessary to increase temperature of said power storage unit; and

said target value setting unit stores said second value in advance, and calculates said first value by subtracting said amount of change from said second value.

9. The vehicle according to claim 8, wherein

said change instruction generation unit determines a start time of starting change of the state of charge of said power storage unit based on a designated charge end time and said amount of change, and when current time reaches said start time, generates said change instruction.

10. The vehicle according to claim 8, wherein

said change instruction generation unit generates said change instruction in response to a temperature increase request input from outside.

11. The vehicle according to claim 10, wherein

said change instruction generation unit outputs said change instruction when it receives said temperature increase request from a transmission device provided in a house;

and

said transmission device transmits said temperature increase request in response to a result of detection by a sensor detecting a user going out from said house.

12. The vehicle according to claim 10, wherein

said change instruction generation unit outputs said change instruction in response to a remote operation by a user.