Devices and methods for the safe driving, charging and energy recovery operation of an electric vehicle
First Claim
1. An electrical protection and monitoring device in an electric vehicle for safe driving operation and also for safe charging of a rechargeable energy store of the electric vehicle with an unearthed IT network as an on-board electrical system and energy recovery operation from the energy store of the electric vehicle at a charging station, the electrical protection and monitoring device comprising:
- (a) an insulation monitoring instrument connected to the on-board electrical system of the electric vehicle; and
(b) a differential current monitoring instrument in the electric vehicle connected to a connected section of the power supply network to monitor a residual current.
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Accused Products
Abstract
The invention relates to a method and an electrical protection and monitoring device with an insulation monitoring instrument and a differential current monitoring instrument in an electric vehicle for safe driving operation and also for safe charging and energy recovery operation of the electric vehicle at a charging station. The invention further relates to a device for the safe charging and energy recovery operation of an electric vehicle at a charging station with electrical protection and monitoring devices.
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Citations
26 Claims
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1. An electrical protection and monitoring device in an electric vehicle for safe driving operation and also for safe charging of a rechargeable energy store of the electric vehicle with an unearthed IT network as an on-board electrical system and energy recovery operation from the energy store of the electric vehicle at a charging station, the electrical protection and monitoring device comprising:
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(a) an insulation monitoring instrument connected to the on-board electrical system of the electric vehicle; and (b) a differential current monitoring instrument in the electric vehicle connected to a connected section of the power supply network to monitor a residual current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for the safe driving operation of an electric vehicle with an unearthed IT network as an on-board electrical system and an electrical protection and monitoring device and also for the safe charging of a rechargeable energy store of the electric vehicle as an on-board electrical system and energy recovery operation from the energy store of the electric vehicle at a charging station, the method comprising the steps of:
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(a) monitoring an insulation resistance between at least one active conductors of an on-board electrical system and a vehicle chassis with an insulation monitoring instrument during the driving operation; (b) monitoring the insulation resistance before starting charging, and monitoring the differential current in the electric vehicle when the electric vehicle is connected to the charging station, wherein an entire charging system comprises the electric vehicle, the charging station and a charging cable being monitored; and (c) deactivating the differential current monitoring instrument while in drive mode. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A device for the safe charging of a rechargeable energy store of an electric vehicle with an unearthed IT network as an on-board electrical system and energy recovery operation from the energy store of the electric vehicle at a charging station, the device comprising:
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an electrical protection device and an electrical monitoring device operably connected to protect against electrical shocks creating a comprehensive electrical safety system, wherein the electrical protection device and the electrical monitoring device are disposed in the electric vehicle as a vehicle-based electrical protection and monitoring device and in the charging station, or a charging cable, or the charging station and the charging cable, as charging station-based electrical protection and monitoring devices. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification