Studying Short Discharge Method for Re-used Lead-acid Car Battery SOH Evaluation under Variable Discharge Conditions

• Published in: 2023 International Symposium on Electrical and Electronics Engineering (ISEE) pp. 238 - 243
• Main Authors: Huy Tam, Tran Vo, Phan, Quoc-Dung, Mohsin, Muhammad, Maussion, Pascal
• Format: Conference Proceeding
• Language: English
• Published: IEEE 19.10.2023
• Subjects: Lead acid batteries; lead acid battery; low-cost; Renewable energy sources; Resistors; short discharge method; State of Charge; State of Health; Technological innovation; Thermal resistance; Thermal variables control; Waste materials
• DOI: 10.1109/ISEE59483.2023.10299835

Rural electrification has the potential to significantly contribute to economic and social growth in many developing nations. However, expensive energy systems are out of reach for many people and renewable energies available in these countries are critical to reducing the environmental impact of such systems. To address this issue, frugal innovation based on re-purposed materials can provide cost-effective and long-term solutions. The possibility of reusing discarded lead acid batteries from thermal engine cars in renewable energy systems is investigated in this paper. Before these batteries can be used, their State of Health (SoH) must be accurately and efficiently assessed, but the devices and the method should remain simple and cheap.In this perspective, this paper investigates the possibility of using a basic lab resistor to achieve the two pulse method for SoH assessment of several batteries. The accuracy is evaluated by a comparison with a measurement derived from an electronic load. In the final system, this will be accomplished by reusing power electronics devices coming from discarded desktop Power Supply Units (PSUs). By recycling waste materials and using economical testing techniques, this strategy can give people access to renewable energy options that are both affordable and sustainable.