BATTERY CHARGE MONITORING DEVICE

• US 20100001687A1
• Filed: 07/02/2009
• Published: 01/07/2010
• Est. Priority Date: 07/04/2008
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: WATANABE, Jin
• Granted Patent: US 8,269,452 B2
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 2270/32 of electricity
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• 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: 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

A battery charge monitoring device for monitoring feed of electric power from a power source installation to a battery, the power source installation being disposed separately from a vehicle on which the battery is mounted, and the vehicle using the electric power fed from the battery as a drive source for traveling, includes a vehicle storage portion which stores therein vehicle identification information allotted to the vehicle, a vehicle side communication portion which performs a power line communication with a power source side communication portion of the power source installation through a power line for feeding the electric power from the power source installation to the battery, and a vehicle side control portion which controls the vehicle side communication portion so as to transmit the vehicle identification information stored in the vehicle storage portion, to the power source side communication portion, when a communication channel is established between the power source side communication portion and the vehicle side communication portion.

Claims

1. A battery charge monitoring device for monitoring feed of electric power from a power source installation to a battery, the power source installation being disposed separately from a vehicle on which the battery is mounted, and the vehicle using the electric power fed from the battery as a drive source for traveling, the battery charge monitoring device comprising:

a vehicle storage portion which stores therein vehicle identification information allotted to the vehicle;

a vehicle side communication portion which performs a power line communication with a power source side communication portion of the power source installation through a power line for feeding the electric power from the power source installation to the battery; and

a vehicle side control portion which controls the vehicle side communication portion so as to transmit the vehicle identification information stored in the vehicle storage portion to the power source side communication portion, when a communication channel is established between the power source side communication portion and the vehicle side communication portion.

2. The battery charge monitoring device according to claim 1, further comprising:

a vehicle-side battery charge history storing portion which stores therein power source identification information allotted to the power source installation,

wherein the vehicle side control portion stores the power source identification information which is received from the power source side communication portion through the vehicle side communication portion, in the vehicle-side battery charge history storing portion, when the communication channel is established between the power source side communication portion and the vehicle side communication portion.

3. The battery charge monitoring device according to claim 2, further comprising:

a driver circuit which drives a charge switch to short-circuit or open a part of the power line in order to change-over ON/OFF of the feed of the electric power to the battery,

wherein the vehicle side control portion outputs a control signal instructive of the opening of the charge switch, to the driver circuit, when the power source identification information is not received from the power source side communication portion by the vehicle side communication portion.

4. The battery charge monitoring device according to claim 2, wherein the vehicle-side battery charge history storing portion stores therein the power source identification information and the number of times of receiving the power source identification information transmitted cyclically from the power source side communication portion.

5. The battery charge monitoring device according to claim 1, further comprising:

a driver circuit which drives a charge switch to short-circuit or open a part of the power line in order to change-over ON/OFF of the feed of the electric power to the battery,

wherein an authentication request signal which contains the vehicle identification information stored in the vehicle storage portion is transmitted to the power source side communication portion; and

the vehicle side control portion outputs a control signal instructive of the short-circuiting or opening of the charge switch, to the driver circuit, in accordance with a response signal which notifies an authentication success or an authentication failure responsive to the authentication request signal and which is received from the power source side communication portion by the vehicle side communication portion.

6. A battery charge monitoring device for monitoring feed of electric power from a power source installation to a battery, the power source installation being disposed separately from a vehicle on which the battery is mounted, and the vehicle using the electric power fed from the battery as a drive source for traveling, the battery charge monitoring device comprising:

a power-source-side battery charge history storing portion which stores therein vehicle identification information allotted to the vehicle;

a power source side communication portion which performs a power line communication with a vehicle side communication portion of the vehicle through a power line for feeding the electric power from the power source installation to the battery; and

a power source side control portion which stores the vehicle identification information received from the vehicle by the power source side communication portion, in the power-source-side battery charge history storing portion, when a communication channel is established between the vehicle side communication portion and the power source side communication portion.

7. The battery charge monitoring device according to claim 6, further comprising:

a power source storage portion which stores therein power source identification information allotted to the power source installation,

wherein the power source side control portion controls the power line communication so as to transmit the power source identification information stored in the power source storage portion, to the vehicle-side power line communication portion, when the communication channel is established between the vehicle side communication portion and the power source side communication portion.

8. The battery charge monitoring device according to claim 6, wherein the power-source-side battery charge history storing portion stores therein the vehicle identification information and the number of times of receiving the vehicle identification information transmitted cyclically from the vehicle side communication portion.

9. The battery charge monitoring device according to claim 6, further comprising:

a vehicle identification information database which stores therein registered vehicle identification information for identifying the vehicle which is permitted to feed the electric power from the power source installation,

wherein when an authentication request signal containing the vehicle identification information is received from the vehicle when the communication channel is established between the vehicle side communication portion and the power source side communication portion, the power source side control portion discriminates whether or not the registered vehicle identification information stored in the vehicle identification information database is matched with the vehicle identification information contained in the authentication request signal, and controls the power source side communication portion so as to transmit a response signal for notifying an authentication success or an authentication failure based on a result of the discrimination, to the vehicle side communication portion.