MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202517079969 A) filed by Robert Bosch Gmbh, Stuttgart, Germany, on Aug. 22, for 'method for operating an electric charger, charger, and motor vehicle.'
Inventor(s) include Belau, Vladimir; and Wieditz, Lukas.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a method for operating an electric charger (1), in particular for a motor vehicle, wherein: the charger has an input connection unit (2) for connecting to a supply grid connection unit (3) of a supply grid; the input connection unit (2) has at least a first, a second and a third input connection (L1, L2, L3); the charger has a voltage transformer stage (4) for providing a DC voltage; the voltage transformer stage (4) has at least a first, a second and a third half-bridge (5, 6, 7); each of the half-bridges (5, 6, 7) is connectable or connected to a different one of the input connections (L1, L2, L3); the voltage transformer stage (4) has a DC link (14) having at least one DC link capacitor (15, 16), in particular a series circuit consisting of a first and a second DC link capacitor (15, 16); and the charger (1) has a switching element (S2) that is designed to connect the third half bridge (7) to the first input connection (L1) in a first switching position and to the third input connection (L3) in a second switching position; the method comprising the following steps: switching the switching element (S2) into the first switching position; detecting a first electrical voltage at the first input connection (L1) and a second electrical voltage at the second input connection (L2); charging the at least one DC link capacitor (15, 16) to a bias voltage that is specified according to the first and the second electrical voltage; switching the switching element (S2) into the second switching position once the charging is complete; detecting at least a third electrical voltage at the third input connection (L3); and identifying a grid configuration or a fault in the supply grid on the basis of the determined electrical voltages."
The patent application was internationally filed on Feb. 12, 2024, under International application No.PCT/EP2024/053487.
Disclaimer: Curated by HT Syndication.
