Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Shinji Kato

Takashi Wakui

Morio Kayano

Fumiya Nishii

Noriyuki Yagi

Taku Ueda

Hibiki Saeki

Satoshi Aoyagi

Koichi Yamamoto

Shinobu Ochiai

Hiroshi Murakami

Yoshinobu Hasuka

Atsushi Shibutani

Kentaro Fukui

Masaru Sora

Koji Tamenori

Akihiro Anekawa

A drive unit includes a drive motor, a drive unit case having a motor chamber in which the drive motor is accommodated, a heat exchanger which cools a cooling fluid for cooling the drive motor, and a storage portion which stores the cooling fluid. The drive unit case is formed with a buffer chamber separated from the motor chamber and adjacent to the motor chamber. The buffer chamber is divided from the motor chamber by a dividing wall. The storage portion is provided at a position isolated from the motor chamber with the buffer chamber interposed therebetween.

Drive unit having a buffer chamber that separates a motor chamber from a storage portion

A stator includes a cylindrical stator core having a plurality of slots, and a plurality of coils having segment conductors inserted through the plurality of slots and extending in axial direction, a coolant flow channel through which coolant flows is formed between outer circumferential surface of the segment conductor and inner circumferential surface of the slot, the outer circumferential surface of the segment conductor includes first flat surface facing radial direction, second flat surface facing circumferential direction, and a corner portion curved surface connecting the first flat surface and the second flat surface, the corner portion curved surface includes first curved surface continuous with the first flat surface and second curved surface continuous with the second flat surface, and when seen in cross-sectional view perpendicular to the axial direction, radius of curvature of the first curved surface is greater than radius of curvature of the second curved surface.

Stator and rotary electric machine

A dynamoelectric machine includes: a winding; a stator core including a slot in which the winding is installed; a cover part that covers the stator core; and a crossing part that is a space formed between the cover part and the stator core, wherein, in the crossing part, an end portion of the winding in an axial direction is exposed, and a filling member is disposed between a side surface of the winding in a radial direction and an inner side surface of the cover part in the radial direction.

Dynamoelectric machine having a structure for coolant which enters a micro gap between windings

A dynamoelectric machine includes: a winding formed of a bundle of conducting wires; a stator core including a slot in which the winding is disposed; and an insulating paper disposed between the stator core and the winding in the slot, wherein the conducting wires have a self-fusing property, the insulating paper has a foam layer, and a coolant channel is formed between the conducting wires of the winding.

Dynamoelectric machine having a coolant path through a space provided in the flank of a winding

A control apparatus for controlling a regenerative operation of a vehicle motor includes a vehicle motor as a drive source of a vehicle, an energy storage device, including plural cells, for storing regenerative energy generated by a regenerative operation of the vehicle motor, and a total voltage measuring device for measuring a total voltage that is a sum of inter-terminal voltages of the plural cells, a cell voltage judgment device for determining whether the inter-terminal voltage of any one of the plural cells exceeds a predetermined regeneration limitation voltage, a total voltage estimating device for determining, when it is determined by the cell voltage judgment device that the inter-terminal voltage of any one of the cells exceeds the predetermined regeneration limitation voltage, an estimated total voltage which is defined as a total voltage at a time when the inter-terminal voltage of the one of the cells reaches a regeneration prohibition voltage that is higher than the predetermined regenerative operation limiting voltage, and a control device for setting an amount of regeneration depending on a difference between the estimated total voltage determined by the total voltage estimating device and the total voltage measured by the total voltage measuring device.

Control apparatus for controlling regenerative operation of vehicle motor

A control apparatus calculates the capacitor maximum power (P) that can be supplied to a capacitor depending on the detected value of the temperature of the capacitor, and calculates the output power (P) of the fuel cell, the real power of the motor (P) that actually powers the drive motor, and the load power (P) that actually powers an electrical load, excluding the drive motor. The control apparatus calculates the motor power limiting value (P), which is the motor power that corresponds to the capacitor maximum power (P), based on the output power (P) of the fuel cell, the load power (P) that powers the electrical load, excluding the drive motor, and the capacitor maximum power (P). The control apparatus output to the output controller a control command that directs the real power of the motor (P) to take the value of the motor power limiting value (P) in the case that the real power of the motor (P) is larger than the motor power limiting value (P). The drivability of a fuel cell vehicle is improved while protecting the capacitor.

Control apparatus for a fuel cell vehicle

The apparatus for judging deterioration of a battery, of the present invention, comprises: a current detector for detecting output electric current from and regenerative electric current to the battery; a voltage detector for detecting a voltage output from the battery; an integrator for calculating the remaining charge in the battery by integrating the result of detection by the current detector; a threshold voltage calculator for calculating threshold voltage values corresponding to first and second specified values of the remaining charge, based on the electric current value filtered by the filter; a comparator for comparing the threshold voltage value, calculated by the threshold voltage calculator, with the output voltage value from the battery; a corrector for correcting the remaining charge to the first or second specified value when the output voltage value has reached the threshold voltage value; a current integrator for integrating the output current from the battery and the regenerative current after the remaining charge was corrected to the first specified value until the remaining charge is corrected to the second specified value; and a deterioration judgement device for judging the deterioration of the battery when the value obtained from the integration by the current integrator is equal to or below a predetermined deterioration criterion.

Apparatus for judging deterioration of battery

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.

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Wako, Japan

Shinji Kato