A High-Efficiency Bidirectional Active Balance for Electric Vehicle Battery Packs Based on Model Predictive Control
Abstract
:1. Introduction
2. Comparison of Series Balance Schemes
2.1. Passive Balance
2.2. Active Balance
3. Implementation of Bidirectional Active Equilibrium
3.1. Function and Principle of BMS Controllers
- (1)
- acquisition of voltage, current and temperature;
- (2)
- protection function;
- (3)
- SOC and SOH estimation function;
- (4)
- equilibrium function.
3.2. Hardware Design of Bidirectional Active Balance BMS
3.3. Experiment Results and Analysis
4. Model Prediction Control Algorithm
4.1. Basic Principle of Model Prediction Control
4.2. Nonlinear Model Predictive Control
4.3. Optimal Solution for Linear Programming
5. Model Predictive Control for Active Equilibrium
5.1. Battery Pack Equalisation Modelling
5.2. Simulation Experiment Verification
5.3. Bench Test and Result Analysis
6. Summary
Author Contributions
Funding
Conflicts of Interest
References
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Index | Cell 1 | Cell 2 | Cell 3 | Cell 4 | Cell 5 | Cell 6 |
---|---|---|---|---|---|---|
SOC | 0.956 | 0.869 | 0.725 | 0.678 | 0.627 | 0.428 |
Voltage (V) | 2.687 | 2.634 | 2.528 | 2.501 | 2.255 | 2.164 |
Method | General Control | MPC | Time Reduced |
---|---|---|---|
Time (s) | 1030 | 710 | 31% |
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Song, S.; Xiao, F.; Peng, S.; Song, C.; Shao, Y. A High-Efficiency Bidirectional Active Balance for Electric Vehicle Battery Packs Based on Model Predictive Control. Energies 2018, 11, 3220. https://doi.org/10.3390/en11113220
Song S, Xiao F, Peng S, Song C, Shao Y. A High-Efficiency Bidirectional Active Balance for Electric Vehicle Battery Packs Based on Model Predictive Control. Energies. 2018; 11(11):3220. https://doi.org/10.3390/en11113220
Chicago/Turabian StyleSong, Shixin, Feng Xiao, Silun Peng, Chuanxue Song, and Yulong Shao. 2018. "A High-Efficiency Bidirectional Active Balance for Electric Vehicle Battery Packs Based on Model Predictive Control" Energies 11, no. 11: 3220. https://doi.org/10.3390/en11113220