Patent ID: 6218805
Filing Date: 2001-04-17
Classification: G01R

Abstract:
An electrical direct current system comprising:a rechargeable battery having a first pole connector and a second pole connector, said first pole connector and second pole connector having different polarity;a first battery cable communicating said first pole connector with one or more loads;a second battery cable communicating said second pole connector with one or more loads;a first connecting clamp having a first fastening sleeve of metal that is in contact with said first pole connector of said battery, whereby said first battery cable is joined to and is thermally and electrically conducting with said first fastening sleeve;a second connecting clamp having a second fastening sleeve of metal that is in contact with said second pole connector of said battery, whereby said second battery cable is joined to and is thermally and electrically conducting with said second fastening sleeve;wherein at least one of said first connecting clamp and said second connecting clamp is a measuring battery clamp, which includes a current sensor and a signal processing unit with an electrical output;wherein said measuring battery clamp includes at least one second sensor with an output, wherein said second sensor delivers an electrical signal;said signal processing unit having an electrical input for each of said at least one second sensors and said current sensor wherein said at least one of said second sensors and said current sensor is electrically connected to an output of a corresponding sensor selected from a group consisting of said at least one of said second sensors and said current sensor;wherein said output is a data line, which makes an electrical connection to said output of said signal processing unit, said electrical connection leading out from an interior of said measuring battery clamp;wherein said signal processing unit includes a processing means, whereby said processing means may determine the value of at least one physical quantity concerning said battery from a current and from a totality of signals transmitted to said signal processing unit from said at least one of said second sensors and said current sensor that are present; andwherein said signal processing unit includes means for converting said at least one physical quantity into a suitable form and for passing onto said data line for onward transmission.