LOOSE PLUG DETECTION
First Claim
1. A method for characterizing an electrical connection between an energy storage device of an electrical or hybrid vehicle and an external power supply, said method comprising:
- in said vehicle, receiving an alternating waveform from said power supply;
determining a fundamental frequency of said waveform;
determining if said waveform is distorted; and
if it is determined that said waveform is distorted, determining if said distortion is an indication of a loose connection between said vehicle and said power supply.
1 Assignment
0 Petitions
Accused Products
Abstract
According to the disclosure there is provided a method for characterizing an electrical connection between an energy storage device of an electrical or hybrid vehicle and an external power supply. The method may include, in the vehicle, receiving an alternating waveform from the power supply, determining a fundamental frequency of the waveform, determining if the waveform is distorted, and, if it is determined that the waveform is distorted, determining if the distortion is an indication of a loose connection between the vehicle and the power supply. There is further provided a charging system for characterizing an electrical connection between an energy storage device of an electrical or hybrid vehicle and an external power supply.
11 Citations
15 Claims
-
1. A method for characterizing an electrical connection between an energy storage device of an electrical or hybrid vehicle and an external power supply, said method comprising:
-
in said vehicle, receiving an alternating waveform from said power supply; determining a fundamental frequency of said waveform; determining if said waveform is distorted; and if it is determined that said waveform is distorted, determining if said distortion is an indication of a loose connection between said vehicle and said power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system in a vehicle for characterizing an electrical connection between an energy storage device of an electrical or hybrid vehicle and an external power supply, said system comprising:
-
a control unit configured to receive an alternating current waveform from said power supply, said control unit being configured to determine a fundamental frequency of said waveform, a relay unit arranged to receive said current waveform from said power supply and, depending on a control signal received from said control unit, configured to control a supply of said current waveform from said power supply to said energy storage device, and a rectifier unit, connected between said relay unit and said energy storage device, configured to receive said current waveform from said relay unit, rectify said current waveform, and to deliver said rectified current to said energy storage device; wherein said control unit is configured to detect a distortion of said waveform, and determine if a detected distortion is an indication of a loose connection between said vehicle and said power supply. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification