The present document relates to an electric drive axle comprising an electric motor, a first planetary gear set, a second planetary gear set, and a differential assembly. The electric motor is drivingly connected or drivingly connectable to the differential assembly via the first planetary gear set and via the second planetary gear set.

The present invention concerns a method of thermal management of a transmission of an axle (4) of an electrical vehicle and a circuit used for the method. The circuit comprises a coolant pump (1), one or more on-board units, a three way valve (5) and the axle (4), which axle (4) comprises a transmission. Coolant of a cooling system of the vehicle is made to pass the on-board units to pick up heat losses. The on-board units may be power electronics (2), an electrical machine (3), a battery and/or an on-board charger.

The present invention concerns a method of thermal management of a transmission of an axle (4) of an electrical vehicle and a circuit used for the method. The circuit comprises a coolant pump (1), one or more on-board units, a three way valve (5) and the axle (4), which axle (4) comprises a transmission. Coolant of a cooling system of the vehicle is made to pass the on-board units to pick up heat losses. The on-board units may be power electronics (2), an electrical machine (3), a battery and/or an on-board charger.

Provided is a gas detection device that includes a gas sensor, a power supply circuit that applies voltage to the gas sensor, and a control circuit that determines whether a leak of gas is present. The power supply circuit includes a reset power source that generates a first voltage, and a detection power source that generates a detection voltage for measuring resistance of a metal-oxide layer of the gas sensor. When a value of a current flowing through the metal-oxide layer is a predetermined value ITH or greater, the reset power source applies the first voltage to the gas sensor to perform a reset of resetting the metal-oxide layer of the gas sensor to a high-resistance state, and the control circuit determines that a leak of gas is present, depending on a state in which the reset is performed after the reset is performed for the first time.

An electric axle assembly includes an electric motor having an output shaft. A two stage gear train is coupled with the output shaft. The two stage gear train includes two reduction gears which provide different gear ratios. A differential is provided. A hollow differential input shaft is splined with the differential wherein the hollow input shaft supports driven gears that rotate independently relative to the hollow differential input shaft. A sliding dog clutch is splined to the hollow differential input shaft selectively engaging the driven gears or maintaining a neutral position wherein the electric motor and gear train are disconnected from the differential.

An electric axle assembly includes an electric motor having an output shaft. A two stage gear train is coupled with the output shaft. The two stage gear train includes two reduction gears which provide different gear ratios. A differential is provided. A hollow differential input shaft is splined with the differential wherein the hollow input shaft supports driven gears that rotate independently relative to the hollow differential input shaft. A sliding dog clutch is splined to the hollow differential input shaft selectively engaging the driven gears or maintaining a neutral position wherein the electric motor and gear train are disconnected from the differential.

An electric vehicle may include a frame, a set of wheels, and an electric propulsion system comprising an electric motor and a primary battery assembly including a first battery pack that powers the electric motor. The vehicle may also include an auxiliary battery pack configured to power the electric motor when the primary battery assembly is disconnected from the electric motor. The primary battery assembly may be non-destructively removable from the frame. In addition, the auxiliary battery pack may be fixedly attached to the frame.

A vehicle battery housing which enables an electric vehicle to have an increased battery on-board capacity. The vehicle battery housing is mounted on a vehicle having a ladder frame and includes a first battery accommodating portion arranged in a first space between two side rails constituting the ladder frame and a second battery accommodating portion greater in vehicle-widthwise dimension than the first battery accommodating portion and connected to the first battery accommodating portion to be located in a second space vehicle-heightwise below the first space.

A moving body drive unit has an electric motor that is located inside the case and has a motor shaft extending in a first direction, a gear shaft that is located, inside the case, parallel to the motor shaft so as to extend in the first direction and has a bevel gear formed thereon, an intermediate gear mechanism that transmits power from the motor shaft to the gear shaft, and a differential gear device that is located inside the case and has a ring gear that meshes with the bevel gear to transmit power from the gear shaft to two output shafts extending in a second direction. The motor shaft and the gear shaft are arranged at different positions in both the second direction and in a third direction that is orthogonal to both the first direction and the second direction.

A single drive axle brake includes: a differential unit (300) for separating and transferring the driving power received from the motor (100) to both sides; a differential gear unit (340) for distributing and transferring the driving power transferred from the motor to the wheels disposed on both sides; and a brake unit (360) for restricting the differential gear unit (340). Differential side gears (344, 345) geared with a differential pinion gear are disposed inside a differential gear case (347) coupled with a crown wheel (341) of the differential unit, and the brake unit (360) includes a main brake (380) for restricting and stopping the differential gear case (347), and a subsidiary brake (390) for stopping the rotation of the power shaft (349).