Bidirectional Long Short-Term Memory Model of SoH Prediction for Gelled-Electrolyte Batteries under Charging Conditions
Author:
Kuo Ting-Jung1ORCID, Chao Wei-Ting2
Affiliation:
1. Department of Applied Artificial Intelligence, Ming Chuan University, Taoyuan 33348, Taiwan 2. Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan
Abstract
The impact of different charging currents and surrounding temperatures has always been an important aspect of battery lifetime for various electric vehicles and energy storage equipment. This paper proposes a bidirectional long short-term memory model to quantify these impacts on the aging of gel batteries and calculate their state of health. The training data set of the bidirectional long short-term memory model is collected by charging and discharging the gel battery for 300 cycles in a temperature-controlled box and an automated charge and discharge device under different operating conditions. The testing set is generated by a small energy storage device equipped with small solar panels. Data for 220 cycles at different temperatures and charging currents were collected during the experiment. The results show that the mean absolute error (MAE) and root-mean-square error (RMSE) between the training set and testing set are 0.0133 and 0.0251, respectively. In addition to the proposed model providing high accuracy, the gel battery proved to be stable and long-lasting, which makes the gel battery an ideal energy storage solution for renewable energy.
Funder
National Science and Technology Council
Subject
Polymers and Plastics,Organic Chemistry,Biomaterials,Bioengineering
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