Honda Motor Co., Ltd.

Yazaki Corporation

Fuji Electric Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Mitsuteru Yano

Yoshihiro Kawamura

Toshiaki Takeshita

Shinichi Yokoyama

Masahiko Sato

Susumu Yamamoto

Noriyuki Abe

Toshiaki Ariyoshi

Masanobu Asakawa

Kazuhiro Hara

Toshihiro Sone

Iwao Shimane

Takafumi Tsurumi

Takashi Iida

Atsushi Kaneko

Yoshikazu Nomoto

Tomoki Nakahara

A control device for a mobile body is equipped with a switching unit configured to switch a conductive path between a charging and electrical power supplying unit, a charging connector, and an electrical power supplying connector, a connection determination unit configured to determine whether or not an electrical load is connected to the electrical power supplying connector, a failure determination unit configured to execute a failure determination to determine a failure of the switching unit based on a conductive state when the conductive path is switched, and a control unit configured to limit execution of the failure determination by the failure determination unit, in the case it is determined by the connection determination unit that the electrical load is connected to the electrical power supplying connector.

Control device for mobile body, control method therefor, and mobile body including determining a failure of a switching unit when no electrical load is connected

A power converter includes a power conversion controller configured to determine whether or not an output terminal is misconnected to a system power supply based on a current between a power converter and the output terminal and a voltage between the power converter and the output terminal, and to perform a control to stop power conversion in the power converter when determining that the output terminal is misconnected to the system power supply.

Power converter with output misconnection determiner

A control device for a mobile body is equipped with a charging and electrical power supplying unit including a first smoothing capacitor positioned on a connector side and a second smoothing capacitor positioned on a battery side, and a control unit configured to control the charging and electrical power supplying unit. When the battery is charged using electrical power supplied from the electrical power source device, the control unit completes precharging a first smoothing capacitor and a second smoothing capacitor using electrical power supplied from the battery, before the electrical power from the electrical power source device starts to be supplied to the charging and electrical power supplying unit.

Control device for mobile body, control method therefor, and mobile body

A temperature determination apparatus includes a signal detection section having an A/D input port, a thermistor that is connected to the A/D input port and outputs an analog signal to the A/D input port, and a switch section that shifts a level of the analog signal to a low level. The signal detection section determines that a control signal having a priority higher than that of an output detection process of the thermistor is generated when it is detected that the analog signal to be input to the A/D input port is in the low level.

Signal determination apparatus and temperature determination apparatus

A charging cable for use in charging a vehicle includes a power line, an input section, an oscillator, and a pulse-width adjusting device. The power line is used to carry power from an external power supply to the vehicle. The external power supply and the vehicle are connected to each other with the power line disposed therebetween. A set charging current value in charging the vehicle is input to the input section. The oscillator is configured to generate an oscillation signal having a pulse width within a range of a rated current of the external power supply. The rated current is capable of being supplied to the vehicle. The pulse-width adjusting device is configured to adjust the pulse width of the oscillation signal generated by the oscillator to correspond to the set charging current value input from the input section.

Charging cable, vehicle, and vehicle charging system

When a malfunction of an ungrounded drive electric system including first and second ungrounded power supplies, an inverter, and a motor which is energized by the first and second ungrounded power supplies through the inverter, i.e., an erroneous opening of switches of a battery, is detected, switches of an insulation resistance detector are opened to insolate the insulation resistance detector from the ungrounded drive electric system.

Ground fault detecting system and electric vehicle with ground fault detecting system

An electric vehicle incorporates a ground fault detecting system and has first and second ungrounded power supplies. The ground fault detecting system includes a first insulation resistance detector for detecting a first insulation resistance of the first ungrounded power supply with respect to a grounded region of the electric vehicle, and a second insulation resistance detector for detecting a second insulation resistance of the second ungrounded power supply with respect to the grounded region. The first insulation resistance detector and the second insulation resistance detector detect the first insulation resistance and the second insulation resistance at different times, respectively.

Electric vehicle with ground fault detecting system

The present invention is to provide a voltage detecting apparatus, which can downsize a circuit, reduce costs and detect a voltage with high accuracy, the voltage detecting apparatus to detect a voltage by using a flying capacitor. Furthermore, the voltage detecting apparatus does not halt whole functions. The first zener diode is connected to the first resistor R, which divides a voltage stored with the capacitor as a flying capacitor into a detectable voltage at a microcomputer, in parallel. Furthermore, the voltage detecting apparatus prevents more than a zener voltage of the first zener diode from applying to the input of the microcomputer.

Voltage detecting apparatus

An electric vehicle incorporates a ground fault detecting system for preventing a ground fault detector from detecting a ground fault in error. First and second ground fault detectors are associated respectively with first and second ungrounded power supplies which generate respective different voltages. Since the first and second ground fault detectors are activated in different periods, the ground fault detecting system prevents a ground fault from being detected in error.

An insulation measurement method in an insulation measurement apparatus of a flying capacitor type, includes a first power supply charge voltage measurement process of applying a voltage of a power supply to a flying capacitor for a first charge time period a first grounding resistor measuring voltage measurement process of applying the voltage of the power supply to the flying capacitor via an insulation resistor on one electrode side of the power supply, a second power supply charge voltage measurement process of applying the voltage of the power supply to the flying capacitor for a second charge time period, a second grounding resistor measuring voltage measurement process of applying the voltage of the power supply to the flying capacitor via an insulation resistor on the other electrode side of the power supply, and an insulation resistor conversion process of obtaining a value of the insulation resistor based on measurement results of the first and second charge voltage measurement processes and the first and second grounding resistor measuring voltage measurement processes and an insulation resistor conversion expression.

Insulation measurement method and insulation measurement apparatus

A control section sets a positive side switching element of a positive side detection section and a negative side switching element of a negative side detection section to ON, thus outputting an ON signal. When the switching elements are set ON, a predetermined current outputted from a positive side constant current source and a negative side constant current source, or a portion of this current, flows through detection resistors. A ground fault decision section decides whether a ground fault has occurred in the positive or the negative side of a direct current power source, based upon the value of an output voltage detected by a positive side voltage detector, or upon the value of an output voltage detected by a negative side voltage detector. Ground faults are accurately detected with a simple structure.

Ground fault detection device

In a power supply apparatus for a vehicle, an inverter circuit inputs a voltage from a first battery unit through switches. A smoothing condenser is provided between the first battery unit and the inverter circuit in parallel. A DC-DC converter is provided between the smoothing condenser and a second battery unit to voltage-convert electric energy stored in the first battery unit or the smoothing condenser to supply to the second battery unit, and to voltage-convert electric energy stored in the second battery unit to supply to the smoothing condenser. An electronic control unit controls the DC-DC converter before starting power supply to the inverter circuit, such that the switches are closed after the smoothing condenser is charged to a voltage within a predetermined permission voltage range from the voltage of the first battery unit.

Growing community of inventors

Wako, Japan

Mitsuteru Yano