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VEHICLE INTERNAL POWER SUPPLY SYSTEM STATE DETECTION

IP.com Disclosure Number: IPCOM000246072D
Publication Date: 2016-May-03
Document File: 7 page(s) / 214K

Publishing Venue

The IP.com Prior Art Database

Abstract

A vehicle internal power supply system may be detachably connected to an external power system via an electric cable in order to power/charge power consuming units of the internal system. A system current clamp and/or a voltage meter is arranged in the vehicle internal system for verifying that the internal system is connected to and powered by the external system. Hereby an operator may be notified that the cable is connected. In addition, unit current clamps and/or voltage meters are arranged in the vehicle internal system in order to determine if a power consuming unit of the internal system is malfunctioning.

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VEHICLE INTERNAL POWER SUPPLY SYSTEM STATE DETECTION

ABSTRACT

Vehicles are often equipped with a vehicle internal power supply system through which a number of power consuming units, such as for example an engine heater or a battery charger, can be powered by connecting the vehicle internal power supply system to an external power system by means of a disconnectably arranged electric cable. If the electric cable is not disconnected before the vehicle is taking off, damages may occur to the components of the external power system, the electric cable connecting the vehicle internal power supply system and the external power system or the components of the vehicle internal power supply system.

According to one aspect of the present invention, a system current clamp is arranged to detect current in the vehicle internal power supply system. If a current is detected in the vehicle internal power supply system, the vehicle will be immobilized or, alternatively, the operator of the vehicle will get a warning signal which will encourage him to detach the electric cable before taking off. Hence, damages can be prevented.

According to another aspect of the invention, at least one unit current clamp is arranged at each current transmission cable connected to a respective power consuming unit in the vehicle internal power supply system. When an external power system is connected to the internal power supply system, and a system current clamp detects a current in the internal power supply system, normally, there will be current in the current transmission cables connected to each power consuming unit. Hence, the unit current clamps should detect current provided to each of the power consuming units. If one of the unit current clamps does not detect a current through the current transmission cable connected to the power consuming unit, the power consuming unit can be supposed to be malfunctioning. The operator of the vehicle may in that case get a warning message in which it is specified which power consuming unit needs to be examined, subject to service or possibly exchanged.

BACKGROUND ART

Vehicles are often equipped with a vehicle internal power supply system which may be connected to an external power system when the vehicle is parked, e.g. at a service station, food installation or truck parking area. By means of the vehicle internal power supply system, a number of power consuming units can be powered, such as for example the battery charger, the engine heater, cab socket outlet, etc. In the prior art, there is no detection of whether an internal power supply system of a vehicle is connected to an external power system. Hence, an operator might forget to disconnect the vehicle internal power supply system from the external power source and drive off with the electric cable still connected between the vehicle internal power supply system and the external power system. This might cause damage on the components of the external power system, the electric...