An in-wheel motor drive device (1) is arranged inside a wheel (W) of a wheel (92). The in-wheel motor drive device (1) includes a motor rotating shaft that rotates the wheel, as well as a motor unit (21) including a motor casing (29) that houses the motor rotating shaft, and a plurality of cooling fins (41) provided protruding from an inner end surface (29e) in a vehicle width direction of the motor casing and extending along a vehicle front-rear direction. In a state in which an orientation in a front-rear direction of the wheel (92) is aligned with an orientation in the vehicle front-rear direction, a protruding tip position at a vehicle rear side (41b) of the cooling fin (41) is positioned more inwards in the vehicle width direction than a protruding tip position at a vehicle front side (41a) of the cooling fin (41).

This patent application is directed to thermal management systems of vehicles with an electric powertrain. More specifically, the battery system and one or more powertrain components and/or cabin climate control components of a vehicle share the same thermal circuit as the battery module through which heat can be exchanged between the battery module and one or more powertrain or climate control components as needed.

An electric propulsion system includes a rotary electric machine having an output member, a rechargeable energy storage system (“RESS”) connected to the electric machine, a user interface device, and a controller. The RESS includes multiple battery modules and a switching circuit, the latter being configured, in response to electronic switching control signals, to connect the battery modules in a parallel-connected (“P-connected”) configuration or a series-connected (“S-connected”) configuration, as a selected battery configuration. The user interface device receives an operator-requested drive mode signal indicative of a desired drive mode of the electric propulsion system. The controller, which is programmed with mode-specific electrical losses associated with the desired drive mode, establishes the selected battery configuration in response to the drive mode signal, and presents a drive mode recommendation via the user interface device when the losses associated with the desired drive mode exceed a calibrated loss threshold.

A motor unit includes a motor including a rotor including a shaft, and configured to rotate about a motor axis extending in a horizontal direction, and a stator located radially outside of the rotor; a housing including a housing space to accommodate the motor; an oil passage configured to circulate an oil in the housing space to cool the motor; a gear portion connected to the shaft on one side in an axial direction of the motor axis; and a pump arranged in the oil passage and arranged to the housing. The housing includes a partition arranged to divide a gear chamber to accommodate the gear portion and a motor chamber to accommodate the motor. The partition includes a second connection hole portion opened on the other side in the axial direction toward an inside of the motor chamber.

The present disclosure includes: a cowl member that is formed to extend in a vehicle width direction and bulges to the front from a rear side of a motor chamber; a power unit that is fixed to a right side frame in the motor chamber, has a lower portion fixed to a vehicle body, and drives the vehicle by electricity; and a protection bracket provided on an upper surface of the power unit, wherein the protection bracket is configured to abut the cowl member in the case where a frontal collision of a vehicle occurs and the power unit moves downward to the rear.

A heat management system disclosed herein is used for an electric vehicle. The heat management system may comprise an oil cooler, an oil pump, a converter cooler, a first heat exchanger, a second heat exchanger, a first channel, a second channel, a channel valve, a bypass channel, and a controller. While executing the heat pump mode, the controller may be configured to periodically execute an operation of: switching the channel valve from the second valve position to the first valve position and activating the oil pump; and returning the channel valve from the first valve position to the second valve position and inactivating the oil pump in response to a predetermined time having passed.

A vehicle heat exchange system includes a coolant circulation circuit, a refrigerant circulation circuit, a pump controller, and a detector. In the coolant circulation circuit, a coolant is circulated. In the refrigerant circulation circuit, a refrigerant is circulated. The pump controller controls a flow rate of the coolant. The detector detects a liquid temperature of the coolant before cooling an electric unit. The coolant circulation circuit includes a radiator that dissipates heat of the coolant having cooled the electric unit. The refrigerant circulation circuit includes an exterior heat exchanger in rear of the radiator. The exterior heat exchanger causes the refrigerant to absorb heat from external air. When the detected liquid temperature is equal to or higher than a predetermined temperature, the pump controller maintains or increases the flow rate. When the detected liquid temperature is lower than the predetermined temperature, the pump controller decreases the flow rate.

A thermal system for a vehicle includes a high temperature coolant loop thermally coupled to a heater core, a low temperature coolant loop thermally coupled to at least one of an electric motor and power electronics, and a first four-way valve configured to selectively fluidly couple the high temperature coolant loop and the low temperature coolant loop such that coolant heated by the electric motor and/or the power electronics is directed to the heater core to facilitate heating of an airflow passing thereby.

A temperature-control device for a motor vehicle includes at least one drive machine, whose temperature is to be controlled by way of a temperature-control fluid flowing through the temperature-control device, by which drive machine the motor vehicle can be driven. At least one electrical energy store, whose temperature is to be controlled via the temperature-control fluid flowing through the temperature-control device, stores electrical energy. An air-conditioning device is designed to control the temperature of air to be fed to the interior of the motor vehicle, and has a heat exchanger through which a refrigerant can flow and via which heat can be transferred between the refrigerant and the temperature-control fluid.

A motor housing includes a bearing holder that holds a first bearing and accommodates a rotor and a stator. A second bearing is disposed inside a motor shaft at one axial end portion of the motor shaft and has lower electric resistance than the first bearing. The conductive member electrically connects the second bearing to a motor housing. The radially outer end portion of the second bearing is in contact with the inner peripheral surface of the motor shaft. The contact portion of the conductive member is in contact with the radially inner end portion of the second bearing. The fixed portion is fixed to the motor housing radially outward of the motor shaft. A bridge portion connects the contact portion and the fixed portion.