SYSTEMS AND METHODS FOR ESTIMATING BATTERY SYSTEM POWER CAPABILITY

摘要

System and methods for estimating a future power capability of a battery system included in a vehicle are presented. In some embodiments, a method for estimating a future power capability of a battery system may include determining an initial battery voltage when the battery operates at a current limit and estimating a future battery current at a first time when the battery operates at the associated voltage limit based on the initial battery current. A future battery voltage at the first time when the battery operates at the associated current limit may be determined based on the initial battery voltage. An estimated voltage-limited power capability of the battery at the first time may be determined based on the future battery current and an estimated current-limited power capability of the battery at the first time may be determined based on the future battery voltage.

主权项

1. A method of estimating a power capability of a battery system comprising:
determining an initial battery current when the battery system operates at an associated voltage limit; determining an initial battery voltage when the battery system operates at an associated current limit; estimating a first future battery current at a first iteration interval time when the battery system operates at the associated voltage limit based on the initial battery current; estimating a first future battery voltage at the first iteration interval time when the battery system operates at the associated current limit based on the initial battery voltage; determining a first estimated voltage-limited power capability of the battery system at the first iteration interval time based on the first future battery current; and determining a first estimated current-limited power capability of the battery system at the first iteration interval time based on the first future battery voltage.