Device for charging a battery of a motor vehicle on the basis of a single-phase power supply network, and method of controlling the device
First Claim
1. A device for charging a battery, or charging a battery of an electric-traction motor vehicle, from a single-phase power supply network, the device comprising:
- a filtering stage configured to be connected to the single-phase network;
a voltage step-down stage connected to the filtering stage;
a voltage step-up stage configured to be connected to the battery and coupled to the voltage step-down stage via an inductive component or an inductance coil; and
control circuitry configured to impose chopping duty cycles on the voltage step-down stage and the voltage step-up stage,wherein the control circuitry is further configured to compensate for a phase shift between an input current of the voltage step-down stage and an input voltage of the voltage step-down stage,wherein the control circuitry is further configured to determine a chopping duty cycle of the voltage step-down stage as a function of a voltage of the single-phase power supply network, a setpoint power, and an intensity of current flowing through the inductive component, to compensate for the phase shift between the input current of the voltage step-down stage and the input voltage of the voltage step-down stage, and to control power received by the battery as a function of the setpoint power, andwherein the control circuitry is further configured to determine a chopping duty cycle of the voltage step-up stage as a function of a voltage at an output of the voltage step-down stage, a voltage of the battery, and a difference between the setpoint induction intensity and the intensity of the current flowing through the inductive component, providing closed-loop control of an intensity of a current flowing through the battery.
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Accused Products
Abstract
A device for charging a battery, for example of an electric traction motor vehicle, based on a single-phase power supply network, the device including a filtering stage configured to be connected to the single-phase network, a voltage step-down stage connected to the filtering stage, a voltage step-up stage configured to be connected to the battery and coupled to the voltage step-down stage via an inductive component or an induction coil, and a regulating unit configured to impose chopping duty ratios on the voltage step-down stage and on the voltage step-up stage. The regulating unit compensates for phase shift between an input current of the voltage step-down stage and an input voltage of the voltage step-down stage.
11 Citations
8 Claims
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1. A device for charging a battery, or charging a battery of an electric-traction motor vehicle, from a single-phase power supply network, the device comprising:
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a filtering stage configured to be connected to the single-phase network; a voltage step-down stage connected to the filtering stage; a voltage step-up stage configured to be connected to the battery and coupled to the voltage step-down stage via an inductive component or an inductance coil; and control circuitry configured to impose chopping duty cycles on the voltage step-down stage and the voltage step-up stage, wherein the control circuitry is further configured to compensate for a phase shift between an input current of the voltage step-down stage and an input voltage of the voltage step-down stage, wherein the control circuitry is further configured to determine a chopping duty cycle of the voltage step-down stage as a function of a voltage of the single-phase power supply network, a setpoint power, and an intensity of current flowing through the inductive component, to compensate for the phase shift between the input current of the voltage step-down stage and the input voltage of the voltage step-down stage, and to control power received by the battery as a function of the setpoint power, and wherein the control circuitry is further configured to determine a chopping duty cycle of the voltage step-up stage as a function of a voltage at an output of the voltage step-down stage, a voltage of the battery, and a difference between the setpoint induction intensity and the intensity of the current flowing through the inductive component, providing closed-loop control of an intensity of a current flowing through the battery. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling charging of a battery, or a battery of a motor vehicle, from a single-phase network, in which an input voltage is filtered, electrical power is taken from a network to the battery via a voltage step-down stage and a voltage step-up stage coupled via an inductive component or an inductance coil, the method comprising:
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compensating for a phase shift between an input current of the voltage step-down stage and an input voltage of the voltage step-down stage; controlling the input current of the voltage step-down stage via an open-loop control of a chopping duty cycle of the voltage step-down stage as a function of a voltage of the single-phase power supply network, a setpoint power, and an intensity of the current flowing through the inductive component, compensating for the phase shift between the input current of the voltage step-down stage and the input voltage of the voltage step-down stage, and controlling power received by the battery as a function of the setpoint power; and locking an intensity of a current flowing through the battery to a reference battery intensity via a closed-loop control of a chopping duty cycle of the voltage step-up stage as a function of a voltage at an output of the voltage step-down stage, a voltage of the battery, and a difference between a setpoint induction intensity and an intensity of the current flowing through the inductive component. - View Dependent Claims (8)
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Specification