A rotating electric machine drive unit includes a first rotating electric machine, a second rotating electric machine, a rotating electric machine housing, a power control unit having a first power conversion unit and a second power conversion unit, a first connecting member electrically connecting the first rotating electric machine and the first power conversion unit, and a second connecting member electrically connecting the second rotating electric machine and the second power conversion unit. When viewed from a rotation axis direction of the first rotating electric machine and the second rotating electric machine, the rotating electric machine accommodation portion of the rotating electric machine housing includes a bulging portion bulging outward between the first connecting member and the second connecting member, and the first rotating electric machine is accommodated in the rotating electric machine housing such that a part of the first rotating electric machine is located in the bulging portion.

Current imbalances between parallel switching devices in a power converter half leg are reduced. A gate driver generates a nominal PWM gate drive signal for a respective half leg. A first feedback loop couples the nominal PWM gate drive signal to a gate terminal of a respective first switching device. The first feedback loop has a first mutual inductance with a current path of a first parallel switching device and has a second mutual inductance with a current path of a second parallel switching device. The first and second mutual inductances are arranged to generate opposing voltages in the first feedback loop, so that when all the parallel switching devices carry equal current then the voltages cancel.

Various disclosed embodiments include illustrative inverter modules that are integratably mountable with a drive unit of a vehicle, illustrative drive units with an inverter module integratably mounted therewith, and illustrative vehicles with at least one drive unit with an inverter module integratably mounted therewith. Given by way of non-limiting example, an illustrative module for a drive unit of a vehicle includes a housing having an open face defined therein. Inverter circuitry is disposed in the housing.

A power converter includes a rectangular casing that houses a semiconductor module, and bosses extending outward from three of four side walls of the casing excluding a rear side wall. The bosses include a first boss provided on a first side wall facing frontward, a second boss provided on a second side wall facing in a width direction of the mobile object orthogonal to an up-down direction and a front-rear direction, and a third boss provided on a third side wall opposite to the second side wall. The third boss is smaller in cross-sectional area than the second boss.

A drive device is disclosed, in particular for an electrically driveable vehicle, having at least one electric motor, having at least one drive inverter for actuating the electric motor, having at least one cooling unit with at least one coolant pump, a cooler, at least one pump inverter and with at least one heat exchanger, wherein the heat exchanger is connected in fluid-conducting fashion to the coolant pump and to the cooler via a coolant circuit, wherein at least one pump inverter is integrated into the drive inverter or is arranged adjacent to the drive inverter, wherein the coolant pump can be actuated by the pump inverter.

A stator for an AC motor, includes windings of a first layer, which extend over a first region of the stator and are connectable to a first phase, and windings of a second layer, which extend over a second region of the stator and are connectable to a second phase, wherein the first region is offset relative to the second region and at least one overlap region is formed which is smaller than the individual regions, and wherein a temperature detection unit is arranged in the overlap region and is designed to measure the temperature of the windings in the overlap region.

The present invention discloses a liquid-cooled integrative power system for electric forklift and a control method thereof. It includes an integrated transmission gearbox, an integrated motor controller, an oil pump and a vehicle controller. The integrated transmission gearbox includes a drive motor transmission mechanism and an oil pump motor transmission mechanism. The integrated motor controller includes a control unit for a drive motor and a control unit for an oil pump motor. The integrated transmission gearbox, the integrated motor controller, the drive motor, the oil pump motor, the oil pump and the vehicle controller are completely integrated and mounted to form the liquid-cooled integrative power system for electric forklift. The vehicle controller comprehensively controls the integrative power system.

Powertrain, comprising an inverter unit comprising an inverter configured for converting direct current to alternating current and an inverter housing defining an inverter housing interior volume accommodating the inverter, and an electric motor comprising a rotor and a stator, the rotor defining a motor axis and the electric motor being configured for providing torque, and an electric motor housing, and a reducing gear unit comprising a reducing gear and a reducing gear cover surrounding the reducing gear, the reducing gear defining an output reducing gear axis, wherein the output reducing gear axis is parallel to the motor axis, and in that the reducing gear cover and the inverter housing are arranged at opposite ends of the electric motor with respect to the motor axis, and in that the inverter housing comprises a cut-out, wherein the cut-out defines a cut-out region fully contained within the convex hull of the inverter housing, wherein the cut-out region is disjoint from the inverter housing interior volume, and in that the output reducing gear axis passes through the cut-out region without passing through the inverter housing interior volume. Inductive charging module may be rigidly attached to at least one of the inverter housing, the electric motor housing, the reducing gear cover, and the inductive charging module may be configured to utilize electric components of the inverter, and/or the inductive charging module may be configured to be cooled by a liquid cooling circuit cooling the inverter and/or the electric motor and/or the reducing gear unit.

A vehicle mounting structure for an electric unit 1 includes a side member 10, a suspension member 5 including a high rigidity portion 5a and a low rigidity portion 5b in a vehicle front-rear direction, and an electric unit 1 in which an inverter 2 and a motor 3 are integrated. The side member 10 includes a curved portion 10c having an upwardly convex curved shape. The curved portion 10c is disposed at a position overlapping with the inverter 2 in the vehicle front-rear direction. The electric unit 1 is fixed to the low rigidity portion 5b.

A drive unit includes an internal combustion engine (21) disposed in an engine compartment (10), a first electric motor (31) and a second electric motor (33), and an inverter (27) disposed above an electromotive unit (23). The drive unit has: a first harness (41) that connects the inverter and the first electric motor; a second harness (42) that connects the inverter and the second electric motor; a step portion (51) formed so as to be recessed on one side or the other side, in the left-right direction, of the upper end of the inverter; and an AC terminal block (55) disposed in the step portion. The first harness and the second harness respectively extend downward from the DC terminal block while extending outward, and are respectively connected to upper parts of the first electric motor and the second electric motor.