System and method for charging an on-board battery of an electric vehicle
First Claim
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1. A method of charging a battery of an electric vehicle, the electric vehicle including a generator driven by an engine and an electric motor driven by the battery, the electric motor being configured to drive a drive axle of the electric vehicle to move the electric vehicle, the method including:
- providing a regenerative braking system with the electric vehicle, the regenerative braking system being configured to transfer kinetic energy of the electric vehicle to the electric motor to rotate the electric motor;
rotating the electric motor with electrical power from the battery to move the electric vehicle;
generating a first electrical current with the generator, the first electrical current being routed to the battery;
rotating the electric motor with the regenerative braking system to slow movement of the electric vehicle and to generate a second electrical current, the second electrical current being routed to the battery;
charging the battery with the first and second electrical currents;
monitoring the first and second electrical currents during the charging step to determine a total electrical current supplied to the battery; and
removing the first electrical current from the battery upon the total electrical current exceeding a first predetermined threshold.
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Abstract
An electric vehicle and a range extender engine are shown including the controls to operate the same.
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Citations
20 Claims
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1. A method of charging a battery of an electric vehicle, the electric vehicle including a generator driven by an engine and an electric motor driven by the battery, the electric motor being configured to drive a drive axle of the electric vehicle to move the electric vehicle, the method including:
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providing a regenerative braking system with the electric vehicle, the regenerative braking system being configured to transfer kinetic energy of the electric vehicle to the electric motor to rotate the electric motor; rotating the electric motor with electrical power from the battery to move the electric vehicle; generating a first electrical current with the generator, the first electrical current being routed to the battery; rotating the electric motor with the regenerative braking system to slow movement of the electric vehicle and to generate a second electrical current, the second electrical current being routed to the battery; charging the battery with the first and second electrical currents; monitoring the first and second electrical currents during the charging step to determine a total electrical current supplied to the battery; and removing the first electrical current from the battery upon the total electrical current exceeding a first predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of charging a battery of an electric vehicle, the method including:
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providing a battery, a generator driven by an engine, an electric motor operative to drive a drive axle of the electric vehicle to move the electric vehicle, a regenerative braking system configured to transfer kinetic energy of the electric vehicle to the electric motor, and control logic operative to control charging of the battery; rotating the electric motor with electrical power from the battery to move the electric vehicle; generating a first electrical current with the generator, the first electrical current being routed to the battery; rotating the electric motor with the regenerative braking system to slow movement of the electric vehicle and to generate a second electrical current, the second electrical current being routed to the battery; charging the battery with the first and second electrical currents; monitoring the first and second electrical currents to determine a combined electrical current supplied to the battery; and removing at least one of the first and second electrical currents from the battery upon the combined electrical current exceeding a predetermined threshold level. - View Dependent Claims (10, 11, 12, 13)
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14. A method of charging a battery of an electric vehicle, the method including:
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providing a battery, a generator driven by an engine, an electric motor operative to drive a drive axle of the electric vehicle to move the electric vehicle, a regenerative braking system configured to transfer kinetic energy of the electric vehicle to the electric motor, and control logic operative to control charging of the battery; rotating the electric motor with electrical power from the battery to move the electric vehicle; generating a first electrical current with the generator, the first electrical current being routed to the battery; rotating the electric motor with the regenerative braking system to slow movement of the electric vehicle and to generate a second electrical current, the second electrical current being routed to the battery; charging the battery with the first and second electrical currents; monitoring the first and second electrical currents to determine a combined electrical current supplied to the battery; and reducing at least one of the first and second electrical currents supplied to the battery upon the combined electrical current exceeding a predetermined threshold level. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification