Abstract: A cooling structure of electric devices in a vehicle is structured to hold an inverter (300) downward of a cooling passage (356), and to hold a condenser (200) upward of the cooling passage (356). The heating value generated by the inverter (300) is larger than the heating value generated by the condenser (200).

Abstract: Semiconductor elements (800 to 850) are obtained by molding IGBT and diodes to form an inverter for motor, each of which is in abutting contact with each of first cooling units (1100 to 1106). Semiconductor elements (860 to 910) are obtained by molding IGBT and diodes to form an inverter for generator, each of which is in abutting contact with each of the first cooling unit (1100 to 1106) and second cooling units (1200 to 1204). The heat value generated by the semiconductor elements (800 to 850) is larger than that generated by the semiconductor elements (860 to 910).

Abstract: A rotary electric machine includes a rotor for rotation around a rotational axis, a stator core that has a cylindrical shape and includes a slot therein, a cooling unit having a coolant passage, and a casing that accommodates the rotor and the stator core. A stator coil is inserted in the slot of the stator core and has a coil end protruded from a side face of the stator core. An electric part is mounted on the cooling unit and controls a current of the stator core. The rotor is rotatably supported inside of the stator core. The cooling unit cools both the stator core and the electric part. The cooling portion is accommodated in spacing defined by the side face of the stator core and an outer circumference wall of the coil end.

Abstract: A rotary electric machine includes a rotor for rotation around a rotational axis, a stator core that has a cylindrical shape and includes a slot therein, a cooling unit having a coolant passage, and a casing that accommodates the rotor and the stator core. A stator coil is inserted in the slot of the stator core and has a coil end protruded from a side face of the stator core. An electric part is mounted on the cooling unit and controls a current of the stator core. The rotor is rotatably supported inside of the stator core. The cooling unit cools both the stator core and the electric part. The cooling portion is accommodated in spacing defined by the side face of the stator core and an outer circumference wall of the coil end.

Abstract: An inverter device for changing direct current to alternating current for supplying to an electric motor which may be employed in an electric automobile. This inverter device includes a plurality of switching units, a cooling support member, capacitors, and pairs of first and second conductive plates. Each of the switching units has a box-like casing mounted on the cooling support member, and includes a positive switching element, a negative switching element connected in series, and positive and negative terminals. The positive and negative terminals are exposed on the upper wall of the casing. Each of the capacitors is arranged over an upper wall of the casing of a corresponding one of the switching units, and has positive and negative charge/discharge terminals.

Abstract: The present invention supplies electric power from a battery to a starter and other specific electrical loads which are driven together with the starter with reduced power requirements on the battery. A driving apparatus for controlling an electric load is provided with a battery (1) for supplying the electric power to a starter motor (3) and an electric heater (20) which is attached to a catalyst for cleaning up exhaust gases from the engine. The terminal voltage of the battery (1) during starter motor (3) operation is detected, and the rate of on-off operation to supply the current to the electric heater (20) is controlled by means of a heater controller (5) in accordance with the detected terminal voltage. This conduction timing control is effected by a control circuit (40), being started a first specific time after the start of operation of the starter motor (3) and being ended a second specific time after the end of operation of the starter motor (3).

Abstract: A power source unit for an automotive vehicle comprises an alternator, a rectification unit for converting an alternating current output of the alternator to a direct current, and outputting same through first and second output sections, a first power accumulation unit connected in parallel with a first load, for receiving a power supply through the first output section, a second power accumulation unit connected in parallel with a second load, for receiving a power supply through the second output section, an alternator output control unit for adjusting an output of the alternator depending upon a terminal voltage of the first power accumulating unit, to maintain the terminal voltage of the first power accumulating unit at a predetermined level, and a voltage control unit responsive to a drop in a terminal voltage of the second power accumulation unit to predetermined level, to permit a power supply to the second power accumulation unit through the rectification unit to thus maintain the terminal voltage of

Abstract: A high power supply apparatus employs a high-power load such as a deicing means for deicing a windshield of the automobile. The high-power load is connected to a converter which connects the output voltage of the alternator to a predetermined voltage. During the operation of the high-power load, the alternator is disconnected from the battery through a switch, and at the same time, the rotating speed of the alternator is increased by the idle speed controller. Since the high-converter means converts the output voltage of the alternator when the rotating speed of the alternator is increased, a predetermined electric power of the alternator is supplied to the high-power load.

Abstract: A battery voltage regulating system for an automotive vehicle, wherein a first and a second comparators for sensing a battery voltage and a delay circuit connected to the comparators and controlling a power transistor connected in series with a field coil of an alternator with a certain delay time. The delay circuit includes a capacitor and a charge-discharge current changing circuit so that when the battery voltage exceeds a reference voltage of the second comparator, which is higher than that of the first comparator, a charge on the capacitor is discharged with a larger discharging current than the normal discharging current, to thereby shorten the delay time.

Abstract: An apparatus for controlling electric generation for vehicles for use in an electric generating apparatus for a vehicle having a battery comprising a generator and an electric generation display device comprises: a first comparator circuit for comparing a detection value of the battery voltage with a first reference control voltage so as to charge the battery appropriately; an electric generation display control circuit for driving the electric generation display device in response to an output signal of a second comparator circuit for comparing a detection value of an electric generation voltage of the generator with a second reference control voltage; a third comparator circuit for comparing the detection value of the electric generation voltage of the generator with a third reference control voltage which is higher than the second reference control voltage; and means for driving an exciter circuit of the generator which receives the output signals of the first and third comparator circuits and operates to

Abstract: In a roadway vehicle having a storage battery and an engine-driven alternator, the battery voltage is controlled by a voltage regulator which has a first voltage detector for detecting when the battery voltage reduces below a higher reference level at which the battery voltage is normally controlled, and a second voltage detector for detecting when the battery voltage reduces below a lower reference level. A third voltage detector detects when the alternator voltage rises above a predetermined level. A logic gate circuit responds to outputs from the second and third voltage detectors by generating a warning signal.

Abstract: In a battery charge indicating system, there are provided detecting means of an npn-transistor for detecting a closed condition of an ignition switch, and switching means of a pnp-transistor for supplying a base current to a driving transistor in response to an output of the detecting means, so that the driving transistor is made conductive when the ignition switch is closed and a generator is not generating its output. The emitter of the pnp-transistor is connected to a battery not through a current supply terminal for a voltage regulator, whereby even when the current supply terminal is accidentally disconnected from the regulator, the driving transistor is made conductive so that an indicating lamp is activated to indicate that the generator is not in the operation condition.

Abstract: An electric vehicle control apparatus fixed onto an electric vehicle body and including at least a main semiconductor device and a flywheel diode comprises a base member thereof fixed onto said vehicle body being in close contact therewith, a heat sink made of a metallic plate and fixed onto a portion of said base member through a thin sheet of an insulating material intervening therebetween, at least two pellets fixed directly onto said heat sink which pellets constitute at least said main semiconductor device and said flywheel diode, connecting terminals each thereof mounted on each of said pellets, and at least one auxiliary electric device fixed onto said heat sink.