Bistable solenoid valve device, and method for monitoring it

US11255455B2 · kind B2 · utility

Assignee

• ZF CV SYSTEMS EUROPE BV · BE

Inventors

• Andreas Goers · Pattensen, DE
• Andreas Teichmann · Altwarmbüchen, DE

Key dates

• Filing date: Jan 24, 2018
• Grant date: Feb 22, 2022
• Expiry date: Oct 1, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F2007/1855
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A bistable solenoid valve device for a fluid system is provided. The bistable solenoid valve device comprises a bistable solenoid valve. The bistable solenoid valve comprises a permanent magnet. The bistable solenoid valve further comprises an armature displaceable between a first armature position and a second armature position. The bistable solenoid valve further comprises a first switching coil for energization for a displacement of the armature into the first armature position. The bistable solenoid valve further comprises a second switching coil for energization for a displacement of the armature into the second armature position. The bistable solenoid valve further comprises an evaluation device adapted to measure an induced coil voltage, an induced coil current, or both the induced coil voltage and the induced coil current, at one or more of the non-energized switching coils. The evaluation device is further adapted to assess a switching behavior of the armature.