Discharging circuit for high voltage intermediate circuit for high voltage system of motor car, has voltage converter reducing high voltage of intermediate circuit in operating mode to discharge intermediate circuit

• Main Authors: BOSCH, THOMAS, HELD, MATTHIAS
• Format: Patent
• Language: English; German
• Published: 29.08.2013
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

The circuit has a voltage converter (110) i.e. direct current (DC) static converter, converting high voltage (220) i.e. counter contact voltage, of a high voltage intermediate circuit into load voltage (222) in an operating mode, where the load voltage is lesser than the high voltage. The voltage converter reduces the high voltage in the operating mode to discharge the high voltage intermediate circuit. A control device (232) is formed to increase power dissipation of the voltage converter responding to discharge of the high voltage intermediate circuit. Independent claims are also included for the following: (1) a high voltage system for a vehicle (2) a method for discharging a high voltage intermediate circuit for a high voltage system of a vehicle. Eine Schaltung für einen Hochvoltzwischenkreis (104) für ein Hochvoltsystem für ein Fahrzeug weist einen Spannungswandler (110) auf, der ausgebildet ist, um in einem Betriebszustand eine Hochvoltspannung (220) des Hochvoltzwischenkreises (104) in eine Verbraucherspannung (222) zu wandeln. Der Spannungswandler (110) ist ausgebildet, um den Betriebszustand bis zu einem Absinken der Hochvoltspannung (220) auf eine Entladespannung aufrechtzuerhalten, um den Hochvoltzwischenkreis (104) zu entladen.