Aluminum alloy with high electrical conductivity and elevated temperature strength for use in electric vehicle motors
AssigneeFord Global Technologies, LLC
InventorsYang Huo, Mei Li, Larry Alan Godlewski
Life of this patent
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Abstract
An aluminum alloy includes iron in an amount between greater than 0.9 wt. % and less than or equal to 1.5 wt. %, nickel in an amount between greater than or equal to 2.0 wt. % and less than 4.0 wt. %, titanium in an amount between 0 wt. % and less than or equal to 0.1 wt. %, incidental impurities, and a balance of aluminum. The alloy has a 150° C. yield strength between about 70-120 MPa and an electrical conductivity between about 45-53 IACS.
Claims20
An aluminum alloy consisting of:
- iron in an amount between greater than 0.9 wt. % and less than or equal to 1.5 wt. %;
- nickel in an amount between greater than or equal to 2.0 wt. % and less than 4.0 wt. %;
- titanium in an amount between 0 wt. % and less than or equal to 0.1 wt. %;
- incidental impurities;
- and
- a balance of aluminum,
- the alloy having a 150° C. yield strength between about 70-120 MPa and an electrical conductivity between about 45-53 IACS.
A rotor for use in an electric motor, the rotor being cast from an aluminum alloy, the aluminum alloy consisting of:
- iron in an amount between greater than 0.9 wt. % and less than or equal to 1.5 wt. %;
- nickel in an amount between greater than or equal to 2.0 wt. % and less than 4.0 wt. %;
- titanium in an amount between 0 wt. % and less than or equal to 0.1 wt. %;
- incidental impurities;
- and
- a balance of aluminum,
- the alloy having a 150° C. yield strength between about 70-120 MPa and an electrical conductivity between about 45-53 IACS.
An electric motor comprising:
- a housing;
- a stator mounted within the housing;
- a shaft extending through the center of the stator;
- and
- a rotor mounted on the shaft, the rotor being cast from an aluminum alloy, the aluminum alloy consisting of:
- iron in an amount between greater than 0.9 wt. % and less than or equal to 1.5 wt. %;
- nickel in an amount between greater than or equal to 2.0 wt. % and less than 4.0 wt. %;
- titanium in an amount between 0 wt. % and less than or equal to 0.1 wt. %;
- incidental impurities;
- and
- a balance of aluminum,
- the alloy having a 150° C. yield strength between about 70-120 MPa and an electrical conductivity between about 45-53 IACS.
Dependencies are inferred from the claim text.