A flexible coupling mechanism may be used to suspend a structural component, such as a propulsion pod, from a support member, such as a strut of a hydrofoil watercraft. The flexible coupling mechanism may include multiple vibration isolating mounts configured to extend through the support member to suspend the structural component. The vibration isolating mounts may include a plurality of elastomeric bushings configured to prevent direct contact between a component rigidly coupled to the support member and a component rigidly coupled to the structural component. The elastomeric bushings may include a tapered outer profile configured to provide a nonlinear force feedback profile in response to rotation of the support member relative to the structural component.

A drive module for an electric vehicle having noise, vibration, and harshness counter measures. The drive module includes multiple covers and mass dampeners in order to detune vibration and noise from the cabin of the vehicle.

A vehicle includes a main motor for traveling and an electronic control unit that controls the main motor. The electronic control unit is configured to: extract, from time series data of a rotation speed of the main motor, vibration data in a predetermined frequency band that includes resonance frequency of a drive system that includes the main motor; lower an upper limit value of output torque of the main motor from a normal upper limit value to a first upper limit value lower than the normal upper limit value when magnitude of vibration obtained from the extracted vibration data exceeds a first threshold value; and lower the upper limit value of output torque of the main motor to a second upper limit value lower than the first upper limit value when the magnitude of the vibration exceeds a second threshold value larger than the first threshold value.

A vehicle includes an engine, an electric machine, a battery, and at least one controller. The vehicle may further comprise a port for supplying power to a load external to the vehicle. The controller is programmed to operate the engine at a power level based on a difference between a battery voltage and a reference voltage such that a power output by the electric machine reduces the difference. The power level may define an engine operating point that minimizes fuel consumption. The operating point may be an engine torque and an engine speed. The power level may be further based on a state of charge of the battery. The electric machine may be operated to cause the engine to rotate at an engine speed corresponding to the selected power level. The difference may be caused by varying power drawn by a load external to the vehicle.

The invention relates to a method for controlling an inverter which is electrically connected to an electric motor, having the following steps: defining a modulated voltage (S1) for the inverter, said voltage being based on a first switching frequency, for operating the electric motor with a current, wherein the current has an electric frequency; determining the electric frequency (S2); changing the first switching frequency (S4) on which the modulated voltage is based to a second switching frequency if a value pair consisting of electric frequency and first switching frequency, or a value pair consisting of electric frequency and a sideband of the first switching frequency, is within at least one defined disturbance range (S3).

A method of manufacturing a wireless power reception apparatus includes: forming a lower tray that includes a thermally conductive material and accommodates and fix a coil winding; arranging a coil winding on the lower tray; forming a magnetic field shielding plate so as to accommodate and fix a plurality of magnetic tiles at predetermined intervals; forming a coupled member of a magnetic tiles-magnetic field shielding plate by arranging the plurality of magnetic tiles at the predetermined intervals on the magnetic field shielding plate; forming a thermally conductive polymer molding layer by applying a thermally conductive polymer molding solution to fill spaces between the coil winding and the coupled member of a magnetic tiles-magnetic field shielding plate and bonding the plurality of magnetic tiles and the coil winding such that the plurality of magnetic tiles are positioned over the coil winding; and curing the thermally conductive polymer molding layer.

The invention relates to a drive unit (10) for an electric vehicle, said drive unit comprising an electric motor (20), a transmission (30), a power electronics unit (40) for controlling the electric motor (20), and an acceleration sensor (50). The acceleration sensor (50) is located in a housing (42) of the power electronics unit (40), and the housing (42) of the power electronics units (40) is mechanically coupled to the electric motor (20) and/or to the transmission (30) such that vibrations generated by the electric motor (20) and/or by the transmission (30) are transmitted to the acceleration sensor (50) located in the housing (42) of the power electronics unit (40), said acceleration sensor being designed to pick up the transmitted vibrations and convert said vibrations into a measurement signal. The drive unit (10) comprises a signal processing unit which is designed to generate an order spectrogram from the measurement signal and from the speed of the electric motor (20). The invention also relates to a method for detecting faults in a drive unit (10) according to the invention, wherein vibrations which are generated by the electric motor (20) and/or by the transmission (30) are picked up by the acceleration sensor (50) and converted into a measurement signal, an order spectrogram is generated from the measurement signal and from the speed of the electric motor (20) using a signal processing unit, at least one level of the order spectrogram for at least one order is compared using a comparison unit with a threshold value assigned to said order, and a fault in the drive unit (10) is detected if the at least one level of the order spectrogram exceeds the threshold value assigned to said order.

Provided is a vehicle-mounted battery pack. A vehicle-mounted battery pack includes: a battery case, a battery module, an upper cross member, and an upper deck. In the battery module, a first battery row and a second battery row, in which a plurality of vertically placed batteries are disposed in a case horizontal direction, are disposed in a pair in a case vertical direction. The upper cross member is disposed between the first battery row and the second battery row toward the case horizontal direction, and is fixed to a first stepped portion and a second stepped portion of the battery. The upper deck is disposed in the case vertical direction and is fixed to a front end portion and a rear end portion of the battery module.

A traction battery heating circuit, system, and control method, and an electric device are provided. In some embodiments, the traction battery heating circuit includes: a power supply module, including at least one battery group; an inverter module, connected to the power supply module and including an M-phase leg circuit, where the leg circuit is connected in parallel to the battery group, and M is an even multiple of three; a driving module, including a motor having M windings, where the M windings are respectively connected to M phase legs of the leg circuit in one-to-one correspondence; and a control module, connected to the leg circuit, configured to control upper legs of at least three phase legs in the leg circuit and lower legs of the same number of phase legs in remaining legs to be turned on.

A method of controlling anti jerk of a vehicle, includes determining a correction factor based on a wheel slip amount of the vehicle, determining a corrected model speed from a predetermined model speed for a motor of the vehicle based on the correction factor and a motor speed of the vehicle from which a vibration component is removed, determining a vibration component based on the motor speed and the corrected model speed and generating an anti jerk torque based on the determined vibration component, and generating a final output torque of the motor based on a driver demand torque of the vehicle and the generated anti jerk torque.