Power supply apparatus in electric vehicle
First Claim
1. A power supply apparatus in an electric vehicle, comprising:
- drive means for energizing an electric motor;
control means for controlling said drive means;
an activating unit for activating said control means depending on a voltage value on a power supply line of said electric motor; and
voltage stabilizing means for stabilizing a voltage on said power supply line according to an instruction from said control means.
1 Assignment
0 Petitions
Accused Products
Abstract
A power supply apparatus for stabilizing a voltage generated on a power supply line by an electric motor, for preventing a battery from being overcharged, preventing an overvoltage from being generated, and protecting system components from an overvoltage, even when a battery is removed or no electric power is supplied from the battery to a control means. The apparatus includes a drive circuit for energizing a permanent-magnet brushless motor and a control circuit for controlling the drive circuit. A power supply state detecting circuit (activating unit) activates the control circuit depending on a voltage value on a power supply line of the motor. A voltage stabilizing means including a relay and a regenerative resistor stabilizes the voltage on the power supply line when the relay is opened and closed under the control of the control circuit. The voltage stabilizing means may include the drive circuit.
-
Citations
20 Claims
-
1. A power supply apparatus in an electric vehicle, comprising:
-
drive means for energizing an electric motor;
control means for controlling said drive means;
an activating unit for activating said control means depending on a voltage value on a power supply line of said electric motor; and
voltage stabilizing means for stabilizing a voltage on said power supply line according to an instruction from said control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A power supply apparatus in an electric vehicle, comprising:
-
drive means for energizing an electric motor;
control means for controlling said drive means;
an activating unit for activating said control means depending on a voltage value on a power supply line of said electric motor; and
voltage stabilizing means for stabilizing a voltage on said power supply line according to an instruction from said control means; and
automatic power-off means for supplying power to activate the control means only when the voltage on the power supply line is equal to or higher than a certain value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification