Charging device for electric vehicle and charging system for electric vehicle

Abstract

The invention relates to a charging device for an electric vehicle and a charging system for an electric vehicle. When the charging of the electric vehicle (200) is started again after being interrupted, a control unit (communication control unit 14) enables a transmission unit (signal processing unit 10) to transmit signals after the voltage between transmission lines (151) is below a regulated voltage. Namely, when the voltage between transmission lines (151) is below the regulated voltage, the ECU for charging of an electric automobile (200) is identified that a charging connector is dismounted from an insert port. Therefore, if the oscillation of pilot signals is started again by applying the voltage between lines to the transmission lines (151) via the signal processing unit (10), the ECU for charging can be identified that the charging connector (16) is inserted and connected to the insert port again to start the charging via common flow. The charging device provided normally starts the charging again after the charging is interrupted.

Description

technical field [0001] The present invention relates to an electric vehicle charging device and an electric vehicle charging system for charging electric vehicles such as electric vehicles. Background technique [0002] As a conventional example, there is a charging device described in Japanese Patent Laid-Open No. 2003-333706, for example. This charging device is used to charge a battery-type forklift, and supplies power from a facility power supply by connecting a power supply line to a power outlet connected to a facility power supply in a factory via a circuit breaker. In addition, the charging device is equipped with a communication function to send and receive information related to the charging state with other charging devices connected to the power supply of the device via a communication line. [0003] In this conventional example, the current value (total current limit value) that can be used as a whole by one or more charging devices connected to the device powe...

AI Technical Summary

Problems solved by technology

However, when the charging device restarts the charging of the electric vehicle after suspending the charging of the electric vehicle, when the on-duty ratio is changed from 100% to a value less than 96%, it may cause a wrong judgment on the electric vehicle side as An abnormality has occurred (for example, depending on the type of electric vehicle, if the on-duty ratio is set to 100% for only a very short period of time, it may be misjudged that an abnormality has occurred)

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