公开(公告)号：US20220221517A1

公开(公告)日：2022-07-14

申请号：US17614547

申请日：2020-05-28

Applicant: SHANDONG UNIVERSITY

Inventor： Chenghui ZHANG ,  Fazheng WEN ,  Bin DUAN ,  Rui ZHU ,  Junming ZHANG

IPC: G01R31/367 ,  G01R31/385

Abstract: The present invention discloses a high-precision battery model parameter identification method and system based on output response reconstruction. The method includes: determining a pulse function based on a relationship between a measured voltage signal and a true voltage signal and a relationship between the true voltage signal and a current excitation signal; reconstructing a voltage signal based on the pulse function and the current excitation signal; and obtaining equivalent circuit model parameters of a battery based on the reconstructed voltage signal and the current excitation signal. The present invention has the following beneficial effects: the reconstructed output signal has good authenticity, and the precision of parameter identification is high. Since a complex tuning process of the filter is removed, a parameter identification process is more concise and clearer.

公开(公告)号：US20250164565A1

公开(公告)日：2025-05-22

申请号：US19033521

申请日：2025-01-22

Applicant: SHANDONG UNIVERSITY

Inventor： Chenghui ZHANG ,  Fazheng WEN ,  Bin DUAN ,  Rui ZHU ,  Junming ZHANG

IPC: G01R31/367 ,  B60L58/12 ,  B60L58/16 ,  G01R31/3828

Abstract: The present invention discloses a method for managing vehicle-mounted power battery based on stochastic theory, comprising: current source applies current excitation signal to power battery mounted on vehicle by control of BMS, and obtaining voltage measurement signal of the power battery; reconstructing voltage response signal that can effectively restore true voltage of the power battery by processing input and output signals of power battery; obtaining battery model parameters based on reconstructed voltage response signal and current excitation signal; estimating physical parameter values of internal state of power battery based on extended Kalman filter, unscented Kalman filter and like; charging the power battery timely, checking and maintaining the power battery, or replacing the power battery by comparing estimated physical parameter values of internal states with corresponding threshold values.