Abstract: A corona-resistant enameled round wire and preparation method of making such which is suitable for electric vehicle motors and has a copper conductor and an insulating layer. The insulating layer clads the copper conductor and has in sequence from inside to outside, a corona- resistant polyamideimide coating, a corona-resistant special resin coating, a corona-resistant polyimide coating, a corona-resistant modified silicone resin coating, and a corona-resistant polyamideimide coating.

Abstract: A winding arrangement provided on a stator of an electric machine. The winding arrangement includes at least four windings. A first winding and a second winding occupied a first subset of slots; and a third winding and a fourth winding occupied a second subset of the slots. The first subset and the second subset of the plurality of slots are adjoined to each other. A span between two adjacent slots concerning the first winding, the second winding, the third winding, and the fourth winding is chosen from a full-pitch, a short-pitch, and a long-pitch to result in the winding arrangement where the first subsets in a first half of the slots is diagonal to the second subset in a second half of the slots, and the second subset in the first half of the slots is diagonal to the first subset in the second half of the slots.

Abstract: Disclosed is a coaxial asynchronous motor drive system, comprising a speed reducer, an electric motor and a main housing, and further comprising a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system of the disclosure reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the rang per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

Abstract: The disclosure relates to the technical field of vehicle accessories, and specifically provides an electric motor for a vehicle and a vehicle. The disclosure aims to solve the problems existing in an existing electric motor for a vehicle that during spraying and cooling of an outer surface of an iron core, a heat dissipation area of the outer surface of the iron core is small, and a cooling oil easily flows along an outer wall of a cooling oil ring, so that an end portion of a winding cannot be cooled.

Abstract: The disclosure relates to the technical field of vehicle accessories, and specifically provides an electric motor for a vehicle and a vehicle. The disclosure aims to solve the problems existing in an existing electric motor for a vehicle that during spraying and cooling of an outer surface of an iron core, a heat dissipation area of the outer surface of the iron core is small, and a convective heat transfer coefficient of a heat dissipation surface is small.

Abstract: Disclosed are a corona-resistant enameled round wire and preparation method therefor. The corona-resistant enameled round wire is suitable for electric vehicle motors and comprises a copper conductor and an insulating layer, wherein the insulating layer clads the copper conductor and comprises, in sequence from inside to outside, a corona-resistant polyamideimide coating, a corona-resistant special resin coating, a corona-resistant polyimide coating, a corona-resistant modified silicone resin coating, and a corona-resistant polyamideimide coating.

Abstract: The present invention provides a method of thermal management for a power train. The temperature power source of the powertrain is continuously monitored. A heating request of is generated if the temperature of the power source falls below a threshold. In response to the heating request, the power controller of the powertrain generates a three-phase current to operate the asynchronous electric motor of the powertrain. The thermal energy therefore generated by the asynchronous electric motor is then provided to the power source for heating up the power source.

Abstract: A winding arrangement provided on a stator of an electric machine. The winding arrangement includes at least four windings. A first winding and a second winding occupied a first subset of slots; and a third winding and a fourth winding occupied a second subset of the slots. The first subset and the second subset of the plurality of slots are adjoined to each other. A span between two adjacent slots concerning the first winding, the second winding, the third winding, and the fourth winding is chosen from a full-pitch, a short-pitch, and a long-pitch to result in the winding arrangement where the first subsets in a first half of the slots is diagonal to the second subset in a second half of the slots, and the second subset in the first half of the slots is diagonal to the first subset in the second half of the slots.

Abstract: In a method for measuring a metabolic rate of a user, an electronic device is configured to: output a first instruction to instruct the user to pronounce a first specified sound at rest; record a first vocal signal associated with the first specified sound pronounced by the user; output a second instruction to instruct the user to pronounce a second specified sound at exercise; record a second vocal signal associated with the second specified sound pronounced by the user; and evaluate the metabolic rate of the user according to the first vocal signal, the second vocal signal, and a maximum oxygen uptake of the user that is pre-obtained by the electronic device.

Abstract: In a method for measuring a metabolic rate of a user, an electronic device is configured to: output a first instruction to instruct the user to pronounce a first specified sound at rest; record a first vocal signal associated with the first specified sound pronounced by the user; output a second instruction to instruct the user to pronounce a second specified sound at exercise; record a second vocal signal associated with the second specified sound pronounced by the user; and evaluate the metabolic rate of the user according to the first vocal signal, the second vocal signal, and a maximum oxygen uptake of the user that is pre-obtained by the electronic device.