Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Aisin Seiki Kabushiki Kaisha

Takao Watanabe

Eiji Tsuchiya

Akira Murakami

Takahiro Shiina

Junichi Matsuo

Tomoya Ogawa

Tadashi Fujiyoshi

Shinji Aso

Akihiro Kamiya

Kenji Umayahara

Hiroyuki Nishizawa

Shu Asami

Tatsuya Fukami

Tatsuya Miyano

Tomoyuki Tohyama

Wataru Hijikata

Takeshi Kitahata

Yasumitsu Osada

Masahide Uemura

Masataka Osawa

Hiroyuki Ogawa

Ryoichi Hibino

Satoshi Tominaga

Hirohito Hayashi

Kiyoshi Uetsuji

Yuji Kakeno

Hitoshi Takayama

Shohei Matsumoto

Hirofumi Fujiwara

Tomoyuki Toyama

Shuji Yumoto

A power generation amount of a power generator disposed on a vehicle is appropriately controlled by ordering the power generator a required power generation amount so as to control the power generator, driving a drive motor configured to drive a driving wheel of the vehicle using at least part of electric power generated by the power generator according to the required power generation amount, storing at least part of surplus power left in the electric power generated by the power generator in a storage device, detecting a slip of the driving wheel, and, executing reduction processing of a power generation amount for further reducing a required power generation amount that reflects a reduction amount of the electric power for driving the drive motor due to the slip of the driving wheel, if the detected extent of the slip is larger than a predetermined threshold.

Vehicle equipped with a power generator and a method for controlling power generation of the power generator on the vehicle

In a fuel cell vehicle, when temperature of a power storage device detected by a temperature sensor is a second temperature, which is lower than a predetermined first temperature, at least in a period when the power storage device is allowed to be charged with regenerative electric power, remaining charge is controlled by setting a lower limit to a value higher than a lower limit set at the first temperature. When a stop instruction for a fuel cell system is input, remaining charge raising processing for raising the remaining charge of the power storage device is performed.

Fuel cell vehicle and method for controlling the same

Under a condition that a command to stop a fuel cell system is received and a state of charge of a secondary battery is equal to or lower than a threshold which is a value obtained by adding a first predetermined value to a lower limit at which electric power required to stop and start the fuel cell system is supplied, forced charging of the secondary battery by a fuel cell is performed until the state of charge reaches the threshold. After the forced charging is performed, in a case where the command to stop the fuel cell system is received within a predetermined period, the controller sets the threshold to a value obtained by adding a second predetermined value lower than the first predetermined value to the lower limit under the condition.

Fuel cell control device, control method thereof, and fuel cell vehicle

There is provided a fuel cell system. When receiving an instruction to start power generation of the fuel cell system, the fuel cell system is configured: (i) to obtain an output limit value of a secondary battery according to a predetermined relationship of a temperature of the secondary battery to the output limit value of the secondary battery by using the temperature of the secondary battery; (ii) to control a battery converter such as to increase a voltage of a smoothing capacitor for boosting included in the battery converter to a start-time target voltage that is higher than an open circuit voltage of a fuel cell, such that an output power of the secondary battery does not exceed the output limit value; and (iii) to operate the compressor such as to start supplying the cathode gas by the cathode gas supply system and to open the main stop valve such as to start supplying the anode gas by the anode gas supply system.

Fuel cell system and control method of the same

Provided is a voltage control device of a fuel-cell vehicle capable of securing good acceleration responsiveness while suppressing battery deterioration even when a vehicle acceleration request is made in the situation where the output from a battery is restricted. When determining that electric power suppliable from a secondary battery to an air compressor is less than a lower limit of an acceleration maintaining-electric power of the air compressor, a voltage control device of a fuel-cell vehicle maintains a state where electric power generated by a fuel cell is consumed by an electric power drive, and supplies the electric power consumed by the electric power drive to the air compressor when a vehicle acceleration request is made.

Voltage control device for fuel-cell vehicle

A fuel cell system for a vehicle includes: a fuel cell; a plurality of loads that consumes power generated by the fuel cell and includes a vehicle driving motor; a secondary battery configured to be charged with excess power when an amount of power generated by the fuel cell is greater than an amount of power consumed by the loads and to discharge shortage power when the amount of power generated by the fuel cell is less than the amount of power consumed by the loads; and a control unit configured to control the amount of power generated by the fuel cell such that an amount of charging-discharging power of the secondary battery is maintained at a predetermined value.

Fuel cell system for vehicle and control method thereof

On a start of a fuel cell system, (i) when the temperature of a high-voltage secondary battery obtained from a temperature sensor is higher than a predetermined reference value, a controller of the fuel cell system is configured to set an output voltage on a step-down side of a DC-DC converter to a higher voltage than a voltage of a low-voltage secondary battery and subsequently start an FC auxiliary machine using electric power from the high-voltage secondary battery. (ii) When the temperature of the high-voltage secondary battery obtained from the temperature sensor is equal to or lower than the predetermined reference value, on the other hand, the controller of the fuel cell system is configured to set the output voltage on the step-down side of the DC-DC converter to a lower voltage than the voltage of the low-voltage secondary battery and subsequently start the FC auxiliary machine using the electric power from the high-voltage secondary battery.

Fuel cell system

A fuel cell system includes a drive motor, a fuel cell, an auxiliary machine, a secondary battery, a temperature sensor, a current sensor, and a control section. The control section controls the secondary battery for discharging by driving the drive motor or the auxiliary machine and for charging through power generation by the fuel cell or regeneration by the drive motor when a temperature measured by the temperature sensor is lower than a specified value.

A fuel cell system is equipped with a fuel cell and a secondary battery. This fuel cell system is equipped with a recordation unit that records a charge-discharge history of the secondary battery, a prediction unit that predicts restriction on an output of the secondary battery based on the charge-discharge history recorded by the recordation unit, and an output control unit that starts power generation by the fuel cell prior to a timing of restriction on the output of the secondary battery, when the prediction unit predicts restriction on the output of the secondary battery and the fuel cell is in an intermittent operation state.

Fuel cell system and control method for the same

A current command value calculating unit () calculates current command values for a rotor winding () and current command values for a stator winding () with respect to a torque command value between a first rotor () and a second rotor () and a torque command value between a stator () and the second rotor () based on an evaluation function representing a total copper loss of the rotor winding () and the stator winding () and using first and second magnetic interference models. The first magnetic interference model represents a relationship of a linkage magnetic flux &#x3a6;of the rotor winding () with respect to a current Iin the rotor winding () and a current Iin the stator winding (). The second magnetic interference model represents a relationship of a linkage magnetic flux &#x3a6;of the stator winding () with respect to the current I, I.

Information processing device, information storage device, and control device of rotary electric machine

There is provided a cooling structure whose performance for cooling ring members and brushes is enhanced. In a cooling structure applied to a slip ring device including ring members provided to an input shaft and brushes contacting with these ring members, the input shaft includes a shaft member where an external spline portion is formed, and a cylindrical member that is installed over the external circumference of the shaft member so that an internal spline portion formed on the cylindrical member is meshed with the external spline portion, and that the ring members are fixed to the cylindrical member. The internal spline portion is formed upon a portion of the inner circumferential surface of the cylindrical member that lies on the radially inward side of the ring members.

Cooling structure for slip ring device

This rotor for a rotating electric motor includes a hollow cylindrical rotor core with a plurality of laminated electromagnetic steel plates. The inner and outer circumferential surfaces of the rotor core each face a magnetic gap. The rotor core is interposed between a first rotating support member and a second rotating support member. A flange is formed on a first end of a tubular pin protruding from a first hole of the first rotating support member. A tubular expansion part of the tubular pin plastically deforms due to fluid pressure so as to come into close contact with a through hole of the rotor core, the first hole of the first rotating support member, and a second hole of the second rotating support member.

Rotor for rotating electric motor, and rotor manufacturing method

Provided is a compound motor () comprising a magnet rotor () supported by bearings (B, B) in a rotatable manner, a winding rotor () supported by bearings (B, B) in a rotatable manner relative to the magnet rotor () at the inner side of the magnet rotor () and having rotor winding units (), and slip ring mechanisms (). A space is formed in the inner circumference of the winding rotor (). At least a part of the slip ring mechanisms () is arranged in the space of the inner circumference of the winding rotor (). The bearings (Bto B) include bearings (B, B), the internal diameter of each is larger than the size of slip ring mechanisms () with respect to the radial direction. The bearings (B, B) are arranged outside the slip ring mechanisms () with respect to the radial direction.

Rotating electric machine and power transmission device including rotors and electric power unit

When a drive shaft () is driven while the operation of an engine () is stopped, the rotation of an input-side rotor () is restricted by the engagement of a brake. Further, on the basis of the temperature Temp_SR of a brush () acquired by a temperature sensor (), the distribution of torque Tcoup acting between the input-side rotor () and the first output-side rotor () and torque Tmg acting between the stator () and the second output-side rotor () is controlled. Consequently, drive performance when the drive shaft () is driven while the operation of the engine () is stopped is improved while local overheating of a slip ring () is prevented.

Power transmission device

A rotational difference is generated between a first and a second rotor and a third rotor, which causes an induced current to flow in a first rotor winding. This causes a torque to act between the first rotor and the third rotor. The rotary magnetic field generated by the induced current flowing through a second rotor winding interacts with a second stator, which in turn generates an induced electromotive force in a second stator winding. The induced electromotive force is applied via a phase adjustment circuit to a first stator winding, which generates a rotary magnetic field and causes a torque to act between the first stator and the third rotor. The rotary magnetic field generated by the second rotor winding and the induced current flowing in the second stator winding causes a torque to act between the second stator and the second rotor.

Growing community of inventors

Nagakute, Japan

Takao Watanabe