×

Secondary battery management system

  • US 10,243,385 B2
  • Filed: 01/29/2016
  • Issued: 03/26/2019
  • Est. Priority Date: 01/29/2016
  • Status: Active Grant
First Claim
Patent Images

1. A method of managing a battery system, the battery system including at least one battery cell, at least one sensor configured to measure at least one characteristic of the at least one battery cell, and a battery management system including a microprocessor and a memory, the method comprisingreceiving, by the battery management system, at least one measured characteristic of the at least one battery cell from the at least one sensor;

  • estimating, by the battery management system, at least one state of the at least one battery cell at a first time by applying an electrochemical-based battery model that accounts for physical parameters of a chemical composition of the at least one battery cell;

    estimating, by the battery management system, at least one physical parameter of the at least one battery cell based on the at least one measured characteristic and the estimation of the at least one state;

    estimating, by the battery management system, the at least one state of the at least one battery cell at a second time, subsequent to the first time, by applying the electrochemical-based battery model based on the estimated at least one physical parameter; and

    regulating by the battery management system, at least one of charging or discharging of the at least one battery cell based on the estimation of the at least one state of the at least one battery cell,wherein estimating the at least one physical parameter of the at least one battery cell based on the at least one measured characteristic and the estimation of the at least one state includesdetermining, by the battery management system, a linearized representation of the electrochemical-based battery model based on the estimated at least one state of the at least one battery cell at the first time,converting the linearized representation of the electrochemical-based battery model into a scalar representation of the electrochemical-based battery model,determining, by the battery management system, a scalar representation of the at least one physical parameter based on the scalar representation of the electrochemical-based battery model, anddetermining, by the battery management system, the estimated at least one physical parameter based on the scalar representation of the at least one physical parameter, andwherein determining the linearized representation of the electrochemical-based battery model includes applying a state observer to determine one or more regressor vectors based on the estimated at least one state at the first time and at least one estimated physical parameter from a previous time.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×