Power takeoff for an electric vehicle
First Claim
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1. An electric drive axle module with a power takeoff for a vehicle comprising:
- a housing;
a main output shaft extending from the housing and having a first segment defining a first end and a second segment defining a second end;
a first wheel end assembly coupled to the first end and configured to be independently suspended relative to the vehicle;
a second wheel end assembly coupled to the second end and configured to be independently suspended relative to the vehicle;
a variable speed electric motor coupled to the housing;
a transmission disposed within the housing and including a neutral state, the transmission coupled to the electric motor and engageable with the main output shaft to drive the wheel end assemblies; and
an auxiliary output shaft coupled to the transmission, wherein when the transmission is in the neutral state, the auxiliary output shaft will operate at a speed independent of a speed of the wheel end assemblies and dependant on the electric motor speed and when the transmission is operably engaged in other than the neutral state, the auxiliary output shaft will operate at a speed related to both electric motor speed and the speed of the wheel end assemblies.
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Abstract
A power take-off for an electric vehicle. The power take-off includes a variable speed electric motor for driving at least one wheel of the vehicle. A transmission, including a neutral state, coupled to the electric motor. An auxiliary output shaft is coupled to the transmission. When the transmission is in the neutral state, the auxiliary output shaft will operate at a speed independent of wheel speed and dependent on the electric motor speed. When the transmission is operably engaged in other than the neutral state, the auxiliary output shaft will operate at a speed related to both the electric motor speed and the wheel speed.
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Citations
14 Claims
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1. An electric drive axle module with a power takeoff for a vehicle comprising:
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a housing; a main output shaft extending from the housing and having a first segment defining a first end and a second segment defining a second end; a first wheel end assembly coupled to the first end and configured to be independently suspended relative to the vehicle; a second wheel end assembly coupled to the second end and configured to be independently suspended relative to the vehicle; a variable speed electric motor coupled to the housing; a transmission disposed within the housing and including a neutral state, the transmission coupled to the electric motor and engageable with the main output shaft to drive the wheel end assemblies; and an auxiliary output shaft coupled to the transmission, wherein when the transmission is in the neutral state, the auxiliary output shaft will operate at a speed independent of a speed of the wheel end assemblies and dependant on the electric motor speed and when the transmission is operably engaged in other than the neutral state, the auxiliary output shaft will operate at a speed related to both electric motor speed and the speed of the wheel end assemblies. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for providing an electric drive axle module that provides power to a tool mounted on a vehicle, the method for providing power comprising the steps of:
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providing a housing; providing a main output shaft extending from the housing and having a first segment defining a first end and a second segment defining a second end; providing a first wheel end assembly coupled to the first end and independently suspended relative to the vehicle; providing a second wheel end assembly coupled to the second end and independently suspended relative to the vehicle; providing a variable speed electric motor coupled to the housing providing a power-take-off (PTO) apparatus having a gear train; coupling the PTO gear train to the electric motor; providing a planetary annulus gear configured to move between a first position and a second position, wherein in the first position, the PTO will move at a speed independent of wheel speed and dependant on the electric motor speed and in the second position, the PTO will move at a speed related to both electric motor speed and wheel speed. - View Dependent Claims (9, 10, 11)
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12. An electric drive axle module with a power takeoff for use with a vehicle, comprising:
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a housing; a main output shaft extending from the housing and defining a first end and a second end; a first wheel end assembly coupled to the first end and to be independently suspended relative to the vehicle; a second wheel end assembly coupled to the second end and independently suspended relative to the vehicle; a variable speed electric motor coupled to the housing; a transmission disposed within the housing and coupled to the electric motor, the transmission operable in a neutral state where power is not transmitted from the motor to the wheel end assemblies and an engaged state where power is transmitted from the electric motor to the wheel end assemblies; and an auxiliary output shaft coupled to the transmission, wherein when the transmission is in the neutral state, the auxiliary output shaft will operate at a speed independent of a speed of the wheel end assemblies and dependant on the speed of the electric motor and when the transmission is the engaged state, the auxiliary output shaft will operate at a speed related to both electric motor speed and the speed of the wheel end assemblies. - View Dependent Claims (13, 14)
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Specification