초록 ▼

A battery monitoring system for an electric vehicle is provided in which an individual battery monitor is physically touching and electrically connected to each one of the battery modules in the string of series or parallel connected battery modules. The battery monitors are themselves connected in

A battery monitoring system for an electric vehicle is provided in which an individual battery monitor is physically touching and electrically connected to each one of the battery modules in the string of series or parallel connected battery modules. The battery monitors are themselves connected in a series loop with a central computer via optical communication links such that when the central computer issues a command to force instantaneous battery parameter readings, data from a battery monitor upstream in the series loop is transmitted via an optical communication link to the next battery monitor downstream and ultimately back to the central computer. The central computer utilizes the battery parameter data thus collected to determine various battery charge and fault conditions.

대표청구항 ▼

A system for managing at least two interconnected batteries in an electric vehicle, comprising: at least two sensors, each one of said sensors in electrically operable relation with and in close spatial relation to one of the batteries, for sensing the voltage across the battery; at least two local

A system for managing at least two interconnected batteries in an electric vehicle, comprising: at least two sensors, each one of said sensors in electrically operable relation with and in close spatial relation to one of the batteries, for sensing the voltage across the battery; at least two local processors, each one of said local processors in electrically operable relation to one of said sensors, for processing said sensed voltage into voltage data; at least two transceivers, each one of said transceivers in electrically operable relation to one of said local processors, for converting said voltage data into optical data; a central processor, in optically operable relation to said transceiver, for communicating command data to said local processor, for receiving said voltage data from said local processor, and for determining the status of the batteries based on said voltage data; and an optical fiber, connecting in series each of one of said local processors and communicating with said central computer, for transporting said optical data between said local processors and said central computer.