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US 7,256,524 B2Granted
Axial gap electric motor
AssigneeNissan Motor Co., Ltd.
InventorYuusuke Minagawa
Life of this patent
Estimating the term…
Abstract
First and second stators are arranged on mutually spaced positions of an imaginary common axis, and first and second rotors are coaxially and rotatably arranged on mutually spaced positions of the imaginary common axis between the first and second stators.
Claims21
An axial gap electric motor comprising:
- first and second stators that are arranged on mutually spaced positions of an imaginary common axis in a manner to face each other, wherein both stators are configured to be supplied with a compound current;
- a plurality of rotors that are coaxially and rotatably arranged on mutually spaced positions of the imaginary common axis between the first and second stators;
- and
- wherein a number of magnetic poles constituted by magnets of at least one rotor differ from a number of magnetic poles constituted by magnets of another rotor.
1 more element
An axial gap electric motor, comprising:
- first and second stators that are arranged on mutually spaced positions of an imaginary common axis in a manner to face each other;
- a plurality of rotors that are coaxially and rotatably arranged on mutually spaced positions of the imaginary common axis between the first and second stators;
- a rotor back core;
- a plurality of magnets that are put on one surface of the rotor back core;
- a plurality of rotor cores each being constructed of a magnetic material and arranged between two adjacent magnets while piecing the rotor back core;
- an annular supporting member that is attached to the other surface of the rotor back core;
- an enlarged flange formed on one axial end of each rotor core;
- and
- a recess formed in the annular supporting member to snugly receive the enlarged flange.
6 more elements
An axial gap electric motor comprising:
- annular first and second stators that are coaxially arranged around an imaginary common axis, wherein both stators are configured to be supplied with a compound current;
- annular first and second rotors that are coaxially and rotatably arranged on the imaginary common axis between the first and second stators, wherein a number of magnetic poles constituted by magnets of at least one rotor differs from a number of magnetic poles constituted by magnets of another rotor;
- a hollow first rotor shaft that is rotatable about the imaginary common axis and has one axial end secured to a center portion of the first rotor to rotate therewith;
- a second rotor shaft that is rotatably received in the hollow first rotor shaft and has one axial end secured to a center portion of the second rotor to rotate therewith;
- and
- a case that houses therein the first and second stators, the first and second rotors, and the first and second rotor shafts.
3 more elements
Dependencies are inferred from the claim text.