Charging station, motor vehicle and method for inductive charging of a battery of a motor vehicle
AssigneeAudi AG
InventorsStefan Maiwald, Johann Schneider
Life of this patent
Estimating the term…
Abstract
A charging station for the inductive charging of a battery of a motor vehicle. A primary resonant circuit for generating an electrical oscillation, the primary resonant circuit has a primary capacitor and a primary coil. The charging station includes a measuring device designed to excite the primary resonant circuit up to a predefinable voltage amplitude, then to interrupt the excitation of the primary resonant circuit and to evaluate the time function of the voltage amplitude of the primary resonant circuit after the interruption of the excitation of the primary resonant circuit.
Claims11
A charging station for the inductive charging of a battery of a motor vehicle, comprising:
- a primary resonant circuit for generating an electrical oscillation, wherein the primary resonant circuit has a rectifier, a primary capacitor, and a primary coil, wherein the charging station includes a measuring device designed to:
- excite the primary resonant circuit up to a predefinable voltage amplitude;
- then to interrupt the excitation of the primary resonant circuit;
- and
- to evaluate a time function of the voltage amplitude of the primary resonant circuit after the interruption of the excitation of the primary resonant circuit,
- wherein the measuring device is designed to determine whether the rectifier is blocking, and the measuring device is further designed to evaluate the time function of the voltage amplitude of the primary resonant circuit only when the rectifier is blocking.
A motor vehicle, comprising:
- a charging device for inductive charging of a battery of the motor vehicle, wherein the charging device has a secondary resonant circuit having a secondary capacitor and a secondary coil, wherein a rectifier is connected between the secondary resonant circuit and the battery of the motor vehicle, wherein the charging device furthermore includes a measuring device designed to evaluate the time function of the voltage amplitude of the secondary resonant circuit after an interruption of the excitation of the secondary resonant circuit,
- wherein the measuring device is designed to determine whether the rectifier is blocking, and the measuring device is further designed to evaluate the time function of the voltage amplitude of the secondary resonant circuit only when the rectifier is blocking.
A method for inductive charging of a battery of a motor vehicle by a charging station, having a primary resonant circuit with a primary capacitor and a primary coil for generating an electrical oscillation, wherein the motor vehicle has a secondary resonant circuit with a secondary capacitor and a secondary coil, wherein a rectifier is connected between the secondary resonant circuit and the battery of the motor vehicle, comprising:
- a) excite the primary resonant circuit up to a predefinable voltage amplitude;
- b) interrupt the excitation of the primary resonant circuit;
- and
- c) evaluate the time function of a decaying voltage amplitude by a measuring device after the interruption of the excitation of the primary resonant circuit,
- wherein the measuring device is designed to determine whether the rectifier is blocking, and the measuring device is further designed to evaluate the time function of the voltage amplitude of the primary resonant circuit only when the rectifier is blocking.
Dependencies are inferred from the claim text.