Abstract: An electric work vehicle comprises: a battery configured to store electric power; a motor generator conductively connected to the battery; a power transfer device having a power output shaft configured to transfer motive power from the motor generator; and a controller configured to switch between a first mode and a second mode.

Abstract: A charging system comprises: a first battery mountable in an electric work vehicle; a second battery mountable in an electric automobile; and a converter capable of conductively connecting to the first battery and the second battery, and also capable of converting first electric power from the second battery to second electric power receivable by the first battery and transmitting the second electric power to the first battery.

Abstract: A work vehicle includes: a front wheel; a rear travel device; a travel body supported by the front wheel and the rear travel device; a driving section provided in the travel body and having an occupant floor section; a travel power transmission device configured to transmit power to the rear travel device; at least one electric motor coupled to the travel power transmission device; a first inverter connected to the at least one electric motor; and a second inverter connected to the at least one electric motor.

Abstract: A work vehicle including: a front wheel; a rear travel device; a travel body supported by the front wheel and the rear travel device; a driving section provided in the travel body and having an occupant floor section; a transmission configured to output power to the rear travel device; a transmission case housing the transmission; an electric motor coupled to the transmission; and an inverter connected to the electric motor, wherein: the inverter is provided between the front wheel and the rear travel device, under the floor section, and laterally of the transmission case.

Abstract: A work vehicle includes: a travel device supporting a body; a battery; a motor configured to supply motive power to the travel device; an inverter configured to enable the motor to operate; a cabin supported by the body and housing a driving section that includes a driver seat; and an air conditioner configured to condition air inside the cabin. The inverter is inside the cabin.

Abstract: A work vehicle includes: a travel device; a battery; a motor configured to supply motive power to the travel device; an inverter configured to enable the motor to operate; a first storage section configured to store a first coolant; and a second storage section configured to store a second coolant. The first coolant in the first storage section is supplied to the motor by the first pump, and returns from the motor to the first storage section, and the second coolant in the second storage section is supplied to the inverter by the second pump, and returns from the inverter to the second storage section.

Abstract: A power transmission mechanism includes a first motor, a second motor, a first input shaft to which power is transmitted from the first motor, a second input shaft to which power is transmitted from the second motor, a first output shaft to transmit power to a first driven portion, a second output shaft to transmit power to a second driven portion, and a transmission mechanism which includes a planetary gear mechanism to receive power from the first input shaft and from the second input shaft, and is operable to send power from the first input shaft and from the second input shaft to the first output shaft and the second output shaft.

Abstract: A working machine includes a machine body, a protection mechanism to protect an operator's seat on the machine body, a heater to heat an inside of the protection mechanism, a radiator device to cool an object to be cooled, the radiator device including a heat exchanger to perform heat exchange between the object and ambient air, and a first flow passage to guide air heated by the heat exchanger to the heater and to guide the air further heated by the heater to the inside of the protection mechanism.

Abstract: A hybrid transmission includes an electric transmission and a gear transmission. The electric transmission includes a first motor generator and a second motor generator. The second motor generator is on a side of the first motor generator on which side the gear transmission is located. An output transmission to transmit the output from the second motor generator to the gear transmission is on the side of the second motor generator on which side the gear transmission is located.

Abstract: A hybrid transmission includes an electric transmission including a motor generator, and a gear transmission including a gear driver without a motor generator. A transmission case includes an electric transmission chamber in which the electric transmission is accommodated, and a gear transmission chamber in which the gear transmission is accommodated, the electric transmission chamber and the gear transmission chamber being adjacent to each other. The transmission case includes a partition wall separating the electric transmission chamber from the gear transmission chamber in a non-communication manner.

Abstract: A work vehicle includes a hybrid transmission to vary power from an engine and output the power to a travel device, the hybrid transmission including an electric transmission including a motor generator and a gear transmission including a gear driver. The work vehicle includes an inverter to drive the motor generator. The work vehicle includes a pump to cool the inverter by supplying, to the inverter, a refrigerant to cool the motor generator.

Abstract: A power supply includes a battery; an inverter that controls an output voltage of the battery; an air-cooler that cools the battery and the inverter with cooling air; and a case that houses the battery, the inverter, and the air-cooler.

Abstract: An electric vehicle includes: an electric motor; a wheel that is driven by the electric motor; a power transmission mechanism that defines at least a part of a power transmission path between the electric motor and the wheel and that transmits rotational power of the electric motor to the wheel; a wheel brake that is provided on the wheel; an electromagnetic brake that stops rotation of the electric motor; and a controller that maintains a control value of a rotation speed of the electric motor at 0 and activates the electromagnetic brake when a vehicle speed becomes lower than or equal to a predetermined value close to 0.

Abstract: A working vehicle includes a vehicle body, a traveling device which supports the vehicle body such that the vehicle body is allowed to travel, an electric motor to drive the traveling device, the electric motor being provided on the vehicle body, and a plurality of batteries to store electric power to be supplied to the electric motor, wherein the plurality of batteries include an on-board battery fixed to the vehicle body and a mobile battery detachably attached to the vehicle body.

Abstract: A power transmission mechanism includes an engine including a crankshaft, a flywheel connected to the crankshaft, an electric motor including a rotor to rotate together with a rotary shaft, a damper connected to the rotary shaft and the flywheel, and a driven machine to receive power from the engine and/or the electric motor. The damper is located between the engine and the electric motor in an axial direction of the rotary shaft.

Abstract: A parallel hybrid power transmission mechanism includes a crank shaft, a driven device to which a power of an engine and/or a motor generator is transmitted, an input shaft disposed on the driven device, a flywheel connected to the crank shaft, and a rotor disposed on the motor generator, including a first connecting portion connected to an outside of the flywheel. The rotor is configured to supply and receive a rotational power to and from the flywheel through the first connecting portion. The parallel hybrid power transmission mechanism further includes a coupling arranged independently from the rotor, including a second connecting portion connected to an inside of the flywheel, the coupling being configured to receive the rotational power of the flywheel through the second connecting portion, and an intermediate shaft connecting the coupling and the input shaft to each other, the intermediate shaft being configured to transmit the rotational power received by the coupling to the input shaft.

Abstract: A liquid-cooled motor includes a motor arranged inside a motor case; an internal tube arranged inside the motor case; an external tube arranged outside the motor case; and a supporting member fixed to the motor case to support the internal tube and the external tube and to allow the internal tube and the external tube to be communicated with each other. The supporting member includes a first supporting portion arranged to the motor case side to support the internal tube; and a second supporting portion arranged to another side opposite to the motor case side to support the external tube. The first supporting portion includes sealing members arranged along an outer circumference surface of the internal tube; an air chamber arranged between the sealing members; and a water draining portion allowing the air chamber and an outside portion of the motor case to be communicated with each other.

Abstract: To increase a thermal transmission amount between a tooth and an insulation member and reduce a thermal resistance. A stator (1) of an electric motor includes a yoke (2), a plurality of teeth (3) arranged in a circumferential direction of an inner circumference of the yoke (2), a winding wire (5) wound on the tooth (3), and an insulation member (4) disposed between the tooth (3) and the winding wire (5), the insulation member (4) being formed of elastic resin. A concave-convex portion (3a) is formed at least on a circumferential surface (A) among the circumferential surface and an axial surface (B) of the tooth (3). A concave-convex portion (4a) is formed on an inner surface of the insulation member (4), the concave-convex portion (4a) being configured to be fitted to the concave-convex portion (3a).

Abstract: A rotary tilling apparatus separates a power transmission system starting from a flywheel to a passive movement device through an elastic coupler from another power transmission system starting from the flywheel to a rotor of a motor generator, and thereby reduces a load applied to the rotor and prevents the power transmission system of the passive movement device from providing a negative effect to an engine and the rotor. A parallel hybrid power transmission mechanism includes an engine, a crank shaft disposed on the engine, a motor generator, a passive movement device configured to receive a motive power of the motor generator, an input shaft disposed on the passive movement device, a flywheel coupled to the crank shaft, an elastic coupler configured to couple the flywheel to the input shaft, and a rotor disposed on the motor generator and coupled to the fly wheel.

Abstract: A work machine includes a machine body, an engine, a rotary electrical device, and an electric power controller. The engine is provided on the machine body to move the machine body. The rotary electrical device is provided on the machine body to move the machine body. The electric power controller is disposed above the rotary electrical device in a height direction along a height of the work machine to control the rotary electrical device.