Vehicle

Patent metadata

Field	Value
Publication number	US-9321350-B2
Application number	US-201113989342-A
Country	US
Kind code	B2
Filing date	Nov 4, 2011
Priority date	Dec 14, 2010
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

A vehicle includes a connection wire which is provided at the vehicle, an electricity storage device, an external charging system, which charges the electricity storage device with power received from an external power supply through the connection wire, an auxiliary machinery load which is connected to the connection wire, a current sensor which measures au inflow current value into the electricity storage device and an outflow current value from the electricity storage device, an auxiliary machinery current consumption measurement unit which measures a current value to be consumed by the auxiliary machinery load, and a control device which, estimates the inflow current value from the external power supply based on a measurement result of the current sensor and a measurement result of the auxiliary machinery current consumption measurement unit while the electricity storage device is being charged with power received from the external power supply.

First claim

The invention claimed is:

1. A vehicle comprising:
a connection wire;
an electricity storage device;
an external charging system which charges the electricity storage device with power received from an external power supply through the connection wire;
at least one auxiliary machinery load which is connected to the connection wire;
a current sensor which measures an inflow current value into the electricity storage device and an outflow current value from the electricity storage device;
an auxiliary machinery current consumption measurement unit which measures a current value to be consumed by the auxiliary machinery load, wherein the auxiliary current consumption measurement Emit measures a current value to be consumed by all of the at least one auxiliary machinery load connected to the connection wire; and
a control device which estimates the inflow current value from the external power supply based on a measurement result of the current sensor and a measurement result of the auxiliary machinery current consumption measurement unit while the electricity storage device is being charged with power received from the external power supply.

2. A vehicle comprising:
a connection wire and an electricity storage device;
an electricity storage device;
an external charging system which charges the electricity storage device with power received from an external power supply through the connection wire;
an auxiliary machinery load which is connected to the connection wire;
a current sensor which measures an inflow current value into the electricity storage device and an outflow current value from the electricity storage device;
an auxiliary machinery current consumption measurement unit which measures a current value to be consumed by the auxiliary machinery load; and
a control device which estimates the inflow current value from the external power supply based on a measurement result of the current sensor and a measurement result of the auxiliary machinery current consumption measurement unit while the electricity storage device is being charged with power received from the external power supply;
a voltage sensor which measures a voltage value of the connection wire;
a first contactor which is provided between the electricity storage device and the connection wire;
a second contactor which is provided between a vehicle-side connector, to which the external power supply is connected, and the connection wire;
a resistor;
a third contactor which is connected in series to the resistor and provided to bypass the first contactor;
wherein the control device receives information regarding a current value of a current flowing out from the external power supply, when deviation between the current value and an estimated value of the inflow current is greater than or equal to a predetermined value, places the first contactor and the second contactor in an open state and the third contactor in a closed state and determines whether or not a voltage value of the connection wire is abnormal voltage, and when it is determined that the voltage value is abnormal voltage, determines that the vehicle side is responsible for occurrence of the abnormal voltage.

3. The vehicle according to claim 2 ,
wherein, when it is determined that a voltage value of the connection wire is not an abnormal voltage, the control device places the second contactor and the third contactor in an open state and the first contactor in a closed state and determines whether or not a measured current of the current sensor is abnormal current, and when it is determined that the measured current is abnormal current, determines that the vehicle side is responsible for occurrence of the abnormal current.

4. The vehicle according to claim 2 ,
wherein, when it is determined that abnormality occurs at the vehicle side, the control device places the second contactor and the third contactor in an open state and the first contactor in a closed state, activates the auxiliary machinery load, and determines whether or not a voltage value of the connection wire is abnormal voltage, and when it is determined that the voltage value is abnormal voltage, determines that the auxiliary machinery load is abnormal.

5. The vehicle according to claim 1 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the at least one auxiliary machinery load based on a measurement result of a current sensor provided at an input side of the at least one auxiliary machinery load.

6. The vehicle according to claim 1 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the at least one auxiliary machinery load based on an output current value of the at least one auxiliary machinery load and an efficiency map based on the output current value and an output voltage value.

7. The vehicle according to claim 2 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the auxiliary machinery load based on a measurement result of a current sensor provided at an input side of the auxiliary machinery load.

8. The vehicle according to claim 3 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the auxiliary machinery load based on a measurement result of a current sensor provided at an input side of the auxiliary machinery load.

9. The vehicle according to claim 4 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the auxiliary machinery load based on a measurement result of a current sensor provided at an input side of the auxiliary machinery load.

10. The vehicle according to claim 2 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the auxiliary machinery load based on an output current value of the auxiliary machinery load and an efficiency map based on the output current value and an output voltage value.

11. The vehicle according to claim 3 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the auxiliary machinery load based on an output current value of the auxiliary machinery load and an efficiency map based on the output current value and an output voltage value.

12. The vehicle according to claim 4 ,
wherein the auxiliary machinery current consumption measurement unit measures a current value to be consumed by the auxiliary machinery load based on an output current value of the auxiliary machinery load and an efficiency map based on the output current value and an output voltage value.

Assignees

• Yokoyama Shinichi
• Honda Motor Co Ltd

Inventors

• Yokoyama Shinichi

Classifications

• B60L2240/529

  Current · CPC title

• B60L2240/549

  Current · CPC title

• B60L2250/16

  by display · CPC title

• B60L2210/10

  DC to DC converters · CPC title

• B60L2270/20

  Inrush current reduction, i.e. avoiding high currents when connecting the battery · CPC title