Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Keihin Corporation

Morio Kayano

Hiroshi Murakami

Kazunori Watanabe

Daishi Igarashi

Atsushi Shibutani

Teruo Wakashiro

Atsushi Matsubara

Shinobu Ochiai

Takuya Shirasaka

Makoto Kondo

Shinji Kato

Tomoaki Nakai

Tomohiko Maeda

Kazushi Ota

Mitsunobu Saito

Shinichi Kitajima

Shuichi Kazuno

Kan Nakaune

Yasuo Nakamoto

Kosuke Higashitani

Kazuhiro Hara

Tomoyuki Itoh

Hisahiro Ito

Kenichi Shimizu

Naoki Imai

Yasutaka Sakai

Koji Tamenori

Kazunari Ishiguro

Masafumi Usuda

Suguru Kato

Kazuya Ozono

Tomohiko Maeada

There are provided: a power supply provided with a fuel cell; a fuel cell vehicle; an inverter device capable of supplying electric power that is supplied from the fuel cell to an external load; a radiator; a radiator fan; a dryness detection device that detects a dry condition of the fuel cell; and an ECU that control supply of electric power to the external load. The ECU drives the radiator fan when the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the fuel cell to the external load.

Electric power supply system

An ECU selects a power supply mode which controls a power supply to an inverter apparatus, in a case where a fuel cell vehicle is instructed to start-up by an ignition switch and it is detected that a power supply inlet and a power supply connector are fitted together based on voltage of CONNECT signal, and selects a driving mode which controls the driving of the fuel cell vehicle, in a case where the fuel cell vehicle is instructed to start-up by the ignition switch and it is detected that the power supply inlet and the power supply connector are not fitted together based on voltage of CONNECT signal.

Control apparatus for electric vehicle

An ECU of a control apparatus further alleviates a fluctuation in a power generation amount of a fuel cell stack with respect to the power required by an inverter apparatus, when a power supply circuit configured by each of contactors and a power supply inletsupplies the power to the inverter apparatus compared with when a vehicle is driving. The ECU, when the power supply circuit supplies power to the inverter apparatus, stops the power generation of the fuel cell stack in a case where a remaining capacity in a battery is greater than or equal to a predetermined remaining capacity, and inhibits the fuel cell stack from stopping the power generation in a case where the power supplied to the inverter apparatus by the power supply circuit is greater than or equal to a predetermined power supply amount.

Outward power supply control apparatus for fuel cell vehicle

In an ECU, a coolant fan performs cooling operation such that a control DUTY value is limited by a control DUTY value according to tolerable noise level of the cooling fan based on a vehicle speed in a case in which the temperature in the high-voltage battery is lower than a predetermined limitation for highest temperature. In a case in which the temperature in the high-voltage battery is higher than the predetermined limitation for highest temperature, the cooling fan performs the cooling operation by using an energy storage device cooling operation requirement value and an IPU cooling operation requirement value such that performance in the high-voltage battery is not affected. By doing this, a temperature controlling apparatus for batteries in which it is possible to cool the battery and solve temperature difference among a plurality of batteries can be provided.

Temperature controlling apparatus for battery, vehicle apparatus using the same, and controlling method therefor

A control device for a hybrid vehicle which enables an appropriate electrical control based on the usable electrical energy stored in the battery device. In this control device, in step Sin which it is determined whether the value of an energy storage zone B flag F_ ESZONEB is '1'. When the result of the determination is 'Yes', the operation proceeds to step SIn step in step Sthe WOT assist amount lowest coefficient KQBWOASTL, which increases as the use-permission zone PECAPFIB of the state of charge SOC increases, is retrieved from a table. In step in step Sthe WOT assist amount coefficient,KQBWOAST, which increases from the lowest table value KQBWOASTL to a predetermined highest value as the state of charge SOC increases, is retrieved from a table, and a value obtained by multiplying the WOT assist command WOTAST and the WOT assist amount coefficient KQBWOAST retrieved from the table is newly set as the WOT assist command WOTAST.

Control device for hybrid vehicle

A drive unit for vehicles prevents the rise of temperature of a high-pressure battery or condenser and assists the vehicle engine using a motor activated by an electric current supplied from the battery. The drive unit includes a battery temperature sensor and battery ammeter sensor, and defines the permissible current value of input-and-output current, which is limit of a current value to be inputted-and-outputted with respect to the battery, based on the difference between the battery temperature and the upper limit. When the battery temperature exceeds the threshold temperature, the permissible current value is set. Moreover, when the exchanged current value of the output-and-input current exceeds the permissible current value, the motor gradually decreases the output command value.

Vehicle driving apparatus

In vehicle operation under cruise mode, the battery, which is in a low temperature state, is caused to rise in temperature at an early stage, and the assistance amount and the regeneration power generation amount by means of the motor are caused to increase. During vehicle operation in cruise mode, in the case in which one or the other of the battery temperature and the engine water temperature have failed to reach a predetermined temperature, the cruise power generation amount is raised to a predetermined level, and charging of the battery is continued until both the battery temperature and the engine water temperature have reached predetermined temperatures. When a determination has been made that there is no further room in the battery to accept further charge, power generation and assistance is conducted by the motor so as to cancel periodic fluctuations in the drive force of the engine, and vibration damping control is conducted for suppressing vibrations generated by the engine in accordance with the fluctuations in the drive force of the engine.

Control system for hybrid vehicle

The present invention relates to a cooling fan failure detection apparatus for a hybrid vehicle. This apparatus comprises a cooling capacity calculation device which calculates a cooling capacity of a cooling fan provided in the hybrid vehicle; a battery heating value calculation device which calculates a heating value of a battery provided in the hybrid vehicle; an assumed temperature change calculating device which calculates an assumed temperature change of the battery based on the heating value and the cooling capacity; an actual temperature change calculating device which calculates an actual temperature change of the battery; and a failure determination device which determines whether the cooling fan is failing by comparing the assumed temperature change calculated by the assumed temperature change calculating device and the actual temperature change calculated by the actual temperature change calculating device.

Cooling fan failure detection apparatus for hybrid vehicle

The control system for the hybrid vehicle of the present invention, having an engine for producing a driving force for the vehicle, a motor for producing an assist driving force to assist the output from the engine, and a battery for supplying electric energy to the motor and storing energy regenerated by the motor which acts as a generator, the control system comprises: a voltage detector for detecting a voltage from the battery; a full charge judgement device for judging full charge of the battery based on the voltage detected by the voltage detector; a charging electric power variation detector for detecting variation in a charging electric power for charging the battery; and a full charge judgement prevention device for preventing judging of full charge when the charging electric power variation detector detects the variation in the charging electric power.

Control system for a hybrid vehicle

The apparatus for detecting remaining charge of a battery, according to the present invention, comprises: current detector for detecting output electric current from and regenerative electric current to the battery; voltage detector for detecting a voltage output from the battery; low-pass filter for filtering the results of detection by the current detector and the voltage detector; time constant changer for changing the time constant of the low-pass filter; integrator for calculating the remaining charge in the battery by integrating the result of detection by the current detector; threshold voltage calculator for calculating a threshold voltage value corresponding to a specified value of the remaining charge, based on the electric current value filtered by the filter; comparator for comparing the threshold voltage value, calculated by the threshold voltage calculator, with the voltage value filtered by the filter; and resetter for resetting the remaining charge to the specified value when the filtered voltage value exceeds the threshold voltage value.

Apparatus for detecting remaining charge of battery

When a battery as an energy source for propelling an electric vehicle is repeatedly charged and discharged, the calculated remaining capacity of the battery tends to suffer a large error due to an error of a current sensor which detects a battery current. In order to detect the remaining capacity with high accuracy, a remaining capacity 1 detected on the basis of an integrated value of a discharging current and a remaining capacity 2 detected on the basis of the output power of the battery at a present time are compared with each other, and the remaining capacity is determined depending on the result of comparison. The output power of the battery at the present time depends on the remaining capacity at the present time. Thereafter, after the battery is charged and discharged in repeated cycles, the remaining capacity 1 is presumed as suffering a large error, and the remaining capacity 2 is determined as the remaining capacity, so that the remaining capacity can be detected with accuracy.

Apparatus for detecting remaining capacity of battery

When the voltage of a battery is dropped down to a first threshold value (9.5 V) or less, the driving force of a motor is decreased to a level Y(0)-Y(7) of a limit power determined in accordance with a remaining capacity of the battery. When the voltage is not restored even after a predetermined time is lapsed from the decreasing of the driving force to the level Y(0)-Y(7), the driving force is further decreased down to a lower level Y(0)-Y(7). When the voltage of the battery is restored to a second threshold value (10 V), the driving force of the motor is gradually increased up to a level Z(0)-Z(7) of a limit power determined in accordance with the capacity of the battery. Thus, it is possible to prevent a deep discharging of the battery, while minimizing the influence on the traveling of the vehicle.

Control system for electric vehicle

A display unit for an automobile includes a graph comprising a vertical axis X and a horizontal axis Y. The vertical axis X indicates a remaining capacity of driving energy, such the capacity of batteries in an electric vehicle, and the horizontal axis Y indicates a remaining distance that can be traveled based on the remaining capacity of driving energy. Thus, the remaining capacity and the remaining distance are integrally displayed on a single graph.

Display unit for automobiles

A maximum output power and a discharged electric power amount from the battery is calculated; a future variation in maximum output power relative to the discharged electric power amount is evaluated, thereby determining a remaining capacity of the battery on the basis of the electric power amount discharged until the maximum output power reaches a preset lowest maximum-output power. Thus, the remaining capacity of the battery can be correctly detected, irrespective of the charged state, the discharge rate, the degree of deterioration of the battery and the like.

Growing community of inventors

Utsunomiya, Japan

Morio Kayano