Particle swarm optimized back propagation neural network for state of health estimation of lithium-ion battery
The assessment and monitoring of battery health is very crucial for the maintenance and safety of battery-powered applications such as Electric vehicles (EVs). To conduct appropriate battery operation in EVs, the battery capacity should be estimated accurately. In this regard, the State of health...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2024
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| Online Access: | http://journalarticle.ukm.my/25154/ http://journalarticle.ukm.my/25154/1/34.pdf |
| Summary: | The assessment and monitoring of battery health is very crucial for the maintenance and safety of battery-powered
applications such as Electric vehicles (EVs). To conduct appropriate battery operation in EVs, the battery capacity
should be estimated accurately. In this regard, the State of health (SOH) estimation is conducted for evaluating the
battery aging status. This work proposes a hybrid backpropagation neural network (BPNN) and particle swarm
optimization (PSO) technique for SOH estimation. A multi-feature input data framework is constructed with 31-dimensional features for the model training by using 4 battery datasets from NASA i.e. B5, B6, B7 and B18. The
acquisition of the data samples has been performed with a systematic sampling technique. The presented work is
conducted with a training testing ratio of 70:30 and validated with the MIT Stanford battery dataset. The experimental outcomes demonstrated high SOH estimation accuracy compared with the conventional BPNN model. In the case of battery B5, it was observed that RMSE, MSE and MAPE for the BPNN-PSO model are 0.6791, 0.0046, 0.3203 compared
with the conventional BPNN model i.e. 0.8796, 0.0077, 0.4881 respectively. Furthermore, the significance of capacity
regeneration in B7 and B18 results in high-performance metrics compared with other battery datasets. The research
conducted would be beneficial to estimate the battery status regarding battery health i.e. SOH accurately in Battery
System Management (BMS) based EV application. |
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