Subaru Corporation

Fuji Jukogyo Kabushiki Kaisha

Yusuke Komatsu

Takahiro Kinoshita

Susumu Yamashita

Masaru Oe

Fumiyuki Moriya

Katsuhiro Aoki

Hirofumi Yabe

Hiromichi Yahagi

Takafumi Matsushita

Makoto Nakamoto

Yoichi Izumi

Yusuke Ohama

Yukari Ogawa

Kyohei Samura

A reprogramming tool includes a connector that is to be detachably coupled to a diagnostic connector with which a vehicle is provided. The diagnostic connector includes a vehicle-side first terminal and a vehicle-side second terminal. The vehicle-side first terminal is always coupled to a battery of the vehicle. The vehicle-side second terminal is coupled to the battery in a case where a power state of the vehicle is a state in which an ignition is ON. The connector of the reprogramming tool includes a tool-side first terminal and a tool-side second terminal. The tool-side first terminal is to be coupled to the vehicle-side first terminal of the diagnostic connector. The tool-side second terminal is to be coupled to the vehicle-side second terminal of the diagnostic connector. The reprogramming tool includes a short-circuit mechanism configured to short-circuit the tool-side first terminal and the tool-side second terminal.

Reprogramming tool

A vehicle includes a high-voltage system circuit including a high-voltage battery; a low-voltage system circuit including a low-voltage battery and an updater; a DC-DC converter coupled between the two circuits; and a controller that controls the two circuits and the DC-DC converter. The updater updates a program of an update-target device. The DC-DC converter reduces in voltage output electric power of the high-voltage battery and then supplies the electric power to the low-voltage system circuit. The controller determines whether the update-target device is a certain device relating to electric power supply from the high-voltage battery. If the update-target device is the certain device, the low-voltage battery is charged with the output electric power of the high-voltage battery, the certain device stops operating, and the updater updates the program of the certain device by using the output electric power of the low-voltage battery.

Vehicle

A vehicle includes a high-voltage system circuit including a high-voltage battery and an inverter, a low-voltage system circuit including a low-voltage battery and an updater, a DC-DC converter coupled between the two circuits, and a controller. The inverter converts DC electric power supplied from the high-voltage battery into AC electric power and outputs the AC electric power to a motor. The low-voltage battery has a lower output voltage than the high-voltage battery. The updater updates a program of an update-target device by using electric power supplied from the low-voltage or high-voltage battery. The DC-DC converter reduces in voltage output electric power of the high-voltage battery and then supplies the electric power to the low-voltage system circuit. When the updater starts updating of the program by using the electric power reduced in voltage, the controller limits operation of the inverter in response to the start of the updating of the program.

A vehicle includes a high-voltage system circuit including a high-voltage battery, a low-voltage system circuit including a low-voltage battery and an updater, a DC-DC converter coupled between the high-voltage system circuit and the low-voltage system circuit, and a controller. The low-voltage battery has a lower output voltage than the high-voltage battery. The updater updates a program of an update-target device with electric power supplied from the low-voltage or high-voltage battery. The DC-DC converter is capable of reducing in voltage output electric power of the high-voltage battery and then supplying the electric power to the updater. The controller sets a target SOC range of the high-voltage battery and controls charging of the high-voltage battery based on the target SOC range. The controller changes a target SOC lower-limit value of the high-voltage battery to a value higher than a normal value when updating of the program of the update-target device is scheduled.

A vehicle includes a vehicle-mounted communication unit capable of wirelessly communicating telematics information to and from an external server, a monitoring unit that monitors whether an abnormality has occurred in the vehicle-mounted communication unit because of a security incident, and a control unit that controls a vehicle-mounted device. When detecting occurrence of an abnormality in the vehicle-mounted communication unit, the monitoring unit disconnects communication between the vehicle-mounted communication unit and the monitoring unit and notifies the control unit of the abnormality. The control unit can wirelessly communicate with a mobile communication terminal in accordance with a certain profile of a short-range wireless communication standard for a function of the vehicle-mounted device. The control unit instructs, when being notified of the abnormality, the mobile communication terminal to perform an operation in accordance with the certain profile so as to report the abnormality to the external server via the mobile communication terminal.

A vehicle includes a high-voltage system circuit including a high-voltage battery, a low-voltage system circuit including an updater and a low-voltage battery having a lower output voltage than the high-voltage battery, a DC-DC converter coupled between the two circuits, a controller that controls the two circuits and the DC-DC converter, and a wireless communication device. The updater updates a program of an update-target device. The wireless communication device wirelessly receives update data for the program. The controller calculates time taken for updating the program, based on information on the update data. The controller causes the DC-DC converter to reduce in voltage output electric power of the high-voltage battery and then supply the electric power to the low-voltage system circuit, and thus charges the low-voltage battery in accordance with the calculated time. The updater updates the program using output electric power of the charged low-voltage battery.

A vehicle power supply apparatus includes first and second power supply devices, an electrical conduction path, an accumulator, an electric device, and a power supply controller. In switching to a state with electric power supplied from the second power supply device to the electric device, the power supply controller determines whether a discharge state of the accumulator is normal, with a target voltage of the second power supply device lower than an inferior voltage, and with a target voltage of the first power supply device between the inferior voltage and a superior voltage. After determining that the discharge state of the accumulator is normal, the power supply controller allows the target voltage of the first power supply device to be lower than the inferior voltage, and allows the target voltage of the second power supply device to be higher than the superior voltage.

Vehicle power supply apparatus

A vehicle control apparatus includes a first electric motor, a second electric motor, a power storage device, a first consumption amount calculator, a first saving amount calculator, a saving balance calculator, and a display controller. The first consumption amount calculator calculates a first fuel amount consumed by the engine owing to charging when the power storage device is charged. The first saving amount calculator calculates a first fuel amount saved by the engine owing to discharge when the power storage device is discharging. The saving balance calculator calculates, based on the first fuel amount consumed and the first fuel amount saved, a fuel saving balance for each calculation period. The display controller controls, based on the fuel saving balance, fuel saving information to be displayed on a display.

Vehicle control apparatus

A vehicle display device is provided in an electric vehicle including a friction brake and includes: a loss energy calculation module that calculates a loss energy released from the electric vehicle on the basis of an actuation state of the friction brake; a consumption calculation module that calculates an energy consumption consumed by the electric vehicle on the basis of the loss energy; a first efficiency calculation module that calculates a first energy efficiency on the basis of a travel distance and an energy consumption in a first period; a second efficiency calculation module that calculates a second energy efficiency on the basis of a travel distance and an energy consumption in a second period shorter than the first period; and a display control module that controls a display content of an onboard display on the basis of an efficiency difference between the first and second energy efficiencies.

Growing community of inventors

Tokyo, Japan

Yusuke Komatsu