Method for charging a vehicle battery by induction
First Claim
1. A method for charging an electric battery of a motor-driven vehicle by induction, from a charging device including:
- a charge transmitter including a primary coil positioned in a parking space for a motorized vehicle, an inverter configured to deliver to the primary coil an alternating power supply voltage; and
a charge receiver including a secondary coil arranged in the vehicle positioned in the parking space;
the method comprising;
matching a frequency of the power supply voltage of the inverter to a value substantially equal to a resonance frequency of the charging device when a motorized vehicle is located in the parking space, including;
setting a first power transmission parameter;
starting an iterative test including;
setting a value of a second power transmission parameter;
varying the second power transmission parameter over a second authorized adjustment range;
measuring power transmitted between the charge transmitter and the charge receiver;
determining whether the power is equal to or greater than a pre-established operating threshold; and
determining whether the power increases;
ending the iterative test if the power transmitted is greater than the pre-established operating threshold;
setting the power supply voltage of the primary coil to reach the measured transmitted power, the first and second power transmission parameters being set to their previously established value.
1 Assignment
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Accused Products
Abstract
The invention relates to a method for charging a vehicle battery by induction from a charging device including a charge transmitter including a primary coil L1 and an inverter capable of supplying the primary coil L1 with an AC supply voltage E. Said device also includes a charge receiver including a secondary coil L2 arranged in a vehicle. Said method consists of adjusting a frequency f of the power supply voltage (E) to the resonance frequency fo, when a motor vehicle is located in a parking space. Said method comprises the following steps: setting a first power-transmission parameter (E, f); starting an iterative test which consists of: setting a value of a second power-transmission parameter (E, f); varying the second power-transmission parameter (E, f) in a second authorized adjustment range; measuring the power (Pbat) transmitted between the charge transmitter and the charge receiver; determining if the power (Pbat) is no lower than a predetermined operating threshold (PObj); determining if the power (Pbat) increases; ending the iterative test if the transmitted power (Pbat) is higher than the predetermined operating threshold (PObj); setting the power supply voltage (E) in order to reach the measured transmitted power (Pbat), said first and second transmission parameters being set to the previously established value thereof.
7 Citations
13 Claims
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1. A method for charging an electric battery of a motor-driven vehicle by induction, from a charging device including:
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a charge transmitter including a primary coil positioned in a parking space for a motorized vehicle, an inverter configured to deliver to the primary coil an alternating power supply voltage; and a charge receiver including a secondary coil arranged in the vehicle positioned in the parking space; the method comprising; matching a frequency of the power supply voltage of the inverter to a value substantially equal to a resonance frequency of the charging device when a motorized vehicle is located in the parking space, including; setting a first power transmission parameter; starting an iterative test including; setting a value of a second power transmission parameter; varying the second power transmission parameter over a second authorized adjustment range; measuring power transmitted between the charge transmitter and the charge receiver; determining whether the power is equal to or greater than a pre-established operating threshold; and determining whether the power increases; ending the iterative test if the power transmitted is greater than the pre-established operating threshold; setting the power supply voltage of the primary coil to reach the measured transmitted power, the first and second power transmission parameters being set to their previously established value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification