Method for determining a current flowing through at least one switching element, electrical circuit arrangement, and motor vehicle
AssigneeAudi AG
InventorDaniel RUPPERT
Life of this patent
Estimating the term…
Abstract
A method determines a current flowing through at least one switching element of an electrical circuit arrangement. When the switching element is turned on the current flows through a switchable portion of the switching element. The switching element is associated with a temperature sensor and a voltage sensor. The temperature sensor measures a temperature of the switching element and the voltage sensor measures a voltage drop across the switchable portion of the switching element. The temperature sensor and the voltage sensor are connected to a computing device. The computing device determines a current value of the current based on the measured temperature and the measured voltage drop.
Claims12
A method, comprising:
- turning on a switching element of an electrical circuit arrangement;
- flowing a current through a switchable portion of the switching element;
- measuring a temperature of the switching element with a temperature sensor connected to a computing device;
- measuring a voltage drop across the switchable portion of the switching element with a voltage sensor connected to the computing device;
- and
- determining a current value of the current with the computing device based on the temperature measured by the temperature sensor and based on the voltage drop measured by the voltage sensor.
An electrical circuit arrangement, comprising:
- at least one switching element having a switchable portion;
- a temperature sensor configured to measure a temperature of the switching element;
- a voltage sensor configured to measure a voltage drop across the switchable portion;
- and
- a computing device connected to the temperature sensor and the voltage sensor and configured to measure a current flowing through the switching element based on the temperature measured by the temperature sensor and based on the voltage drop measured by the voltage sensor.
A motor vehicle comprising an electrical circuit arrangement, the electrical arrangement including:
- at least one switching element having a switchable portion;
- a temperature sensor configured to measure a temperature of the switching element;
- a voltage sensor configured to measure a voltage drop across the switchable portion;
- and
- a computing device connected to the temperature sensor and the voltage sensor and configured to measure a current flowing through the switching element based on the temperature measured by the temperature sensor and based on the voltage drop measured by the voltage sensor.
Dependencies are inferred from the claim text.