US 8,796,991 B2Granted

Electric charging system

AssigneeFuji Jukogyo Kabushiki Kaisha

InventorYosuke Ohtomo

Life of this patent

Estimating the term…

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Abstract

In an electric charging system, a charging cable of an electric charger is connected to an electric vehicle, and a supply voltage at the electric charger is temporarily raised and dropped. A receiving voltage at the electric vehicle rises and falls in conjunction with to the supply voltage. Accordingly, a feature point is assigned to each of electric charger data obtained by applying a filtering process to the supply voltage and vehicle data obtained by applying a filtering process to the receiving voltage. Then a time lag between the electric charger data and the vehicle data due to filtering processing is calculated based on the feature points. Upon determining an insulation failure and the like between the electric charger and the electric vehicle, the electric charger data and the vehicle data are synchronized based on the time lag and then compared.

Claims8

Dependent claims

As electric charging system that connects an electric charger and an electric vehicle via a charging cable and charges an electric storage device mounted on the electric vehicle, the electric charging system comprising:

a supply-side processing unit for calculating supply-side processed data by applying a predetermined filtering process to a supply voltage, a supply current or a supply power in the electric charger;
a receiving-side processing unit for calculating receiving-side processed data by applying a predetermined filtering process to a receiving voltage, a receiving current or a receiving power in the electric vehicle;
a feature point assigning unit for assigning a feature point to the supply-side processed data and the receiving-side processed data by altering at least any one of the supply voltage, the supply current, the receiving voltage and the receiving current;
a data synchronizing unit for synchronizing the supply-side processed data and the receiving-side processed data based on the feature point of the supply side processed data and the receiving-side processed data;
and
a determination unit for determining whether or not a conduction state between the electric charger and the electric vehicle is normal.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/426,707Filed 22 Mar 2012
Priority: JP 2011-07829431 Mar 2011
Published: US 2012/0249069 A14 Oct 2012
Granted: 5 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

B60L 1/08
Using only one supply: methods and devices for control or regulation
B60L 50/16
Using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines: with provision for separate direct…
B60L 50/51
Using propulsion power supplied by batteries or fuel cells: characterised by AC-motors
B60L 53/14
Characterised by the energy transfer between the charging station and the vehicle: conductive energy transfer