Rotor, an electric motor and an electric vehicle
AssigneePolestar Performance AB
InventorsLars Stenvall, Per Strandemo
Life of this patent
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Abstract
The present disclosure relates to a rotor for being accommodated by a stator of an electric motor comprising a hollow rotor shaft and an annular rotor core comprising a winding, the annular rotor core accommodating the hollow rotor shaft. Further, the rotor comprises a power transmitting arrangement comprising a receiving device configured to receive AC power and rectify said AC power to DC power. Further, the rotor comprises coil busbars. Furthermore, the receiving device is positioned at an interior of said hollow rotor shaft.
Claims15
A rotor for being accommodated by a stator of an electric motor comprising:
- a hollow rotor shaft;
- an annular rotor core comprising a winding, the annular rotor core accommodating the hollow rotor shaft;
- a power transmitting arrangement) for transferring power from a power source to said winding, the power transmitting arrangement comprising a receiving device configured to:
- receive, inductively, AC power from said power source;
- and
- rectify said AC power to DC power;
- coil busbars, each being connected, at one end, to said receiving device and, at another end to said winding, wherein:
- the receiving device is positioned at an interior of said hollow rotor shaft;
- the receiving device comprises a receiving coil arrangement and a rectifier circuitry connected to said receiving coil arrangement;
- said coil busbars are, at said one end, connected to said rectifier circuitry, and said another end connected to said winding;
- the rectifier circuitry is attached to a base portion of said hollow rotor shaft such that the rectifier circuitry is supported or attached to the base of the hollow rotor shaft;
- the receiving coil arrangement is located at an opposing other base portion of said hollow rotor shaft;
- and
- the rectifier circuitry is connected to the receiving coil arrangement by rectifier busbars.
Dependencies are inferred from the claim text.