Recycled secondary battery supply forecast system and recycled secondary battery supply forecast usage

Abstract

A recycled battery supply forecast unit 201 of a battery management server 20 receives, from a plurality of vehicles 40, performance information of a secondary battery 403 mounted on each of the vehicles 40 and state information of the vehicle for determining a life of the vehicle 40, makes a forecast of an end of life of the vehicle 40 by using history of the state information of that vehicle, and makes a forecast of performance of the secondary battery 403 at the end of life of that vehicle 40 by using history of the performance information of the secondary battery 403. In addition, a forecast is made of a supply quantity of recyclable secondary batteries at a certain point in time in the future based on a forecast result of the performance of the secondary battery 203 at the end of life of each vehicle 40.

I (we) claim: 
     
         1 . A life forecast system comprising:
 a communication unit which receives performance information of a secondary battery mounted on a stationary electrical storage device and state information of the stationary electrical storage device; and   a forecast unit which makes a forecast of an end of life of the secondary battery by using history of the state information of the secondary battery and the state information of the stationary electrical storage device.   
     
     
         2 . The life forecast system according to  claim 1 ,
 wherein the performance information of the secondary battery indicates a total capacity of the secondary battery, and the forecast unit makes a forecast of the performance of the secondary battery at the end of life of the stationary electrical storage device by calculating the total capacity of the secondary battery at the end of the life of the stationary electrical storage device from a decreasing trend of the total capacity of the secondary battery.   
     
     
         3 . The life forecast system according to  claim 1 ,
 wherein the performance information of the secondary battery indicates a maximum output current of the secondary battery, and the forecast unit makes a forecast of the performance of the secondary battery at the end of life of the stationary electrical storage device by calculating the maximum output current of the secondary battery at the end of the life of the stationary electrical storage device from a decreasing trend of the maximum output current of the secondary battery.   
     
     
         4 . The life forecast system according to  claim 1 ,
 wherein the timing of receiving the state information of the stationary electrical storage device and the performance information of the secondary battery from the stationary electrical storage device is at least one of the following: after lapse of a given period of time after previous reception; upon completion of charging of the secondary battery; and upon termination of use of the stationary electrical storage device.   
     
     
         5 . A life forecast method, comprising the steps of:
 receiving performance information of a secondary battery mounted on a stationary electrical storage device and state information of the stationary electrical storage device;   making a forecast of an end of life of secondary battery by using history of the state information of the secondary battery and the state information of the stationary electrical storage device.   
     
     
         6 . The life forecast system according to  claim 1 ,
 wherein the forecast unit makes a forecast of an end of life of the stationary electrical storage device based on the history of the state information of the stationary electrical storage device.   
     
     
         7 . The life forecast system according to  claim 1 ,
 wherein the forecast unit makes a forecast of performance of the secondary battery at the end of life of the stationary electrical storage device based on the history of the performance information of the secondary battery.   
     
     
         8 . The life forecast system according to  claim 1 ,
 wherein the life forecast system displays a supply quantity of recyclable secondary batteries based on a forecast result of the performance of the secondary battery at the end of the stationary electrical storage device life.