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Determining the appropriate setting of lead-acid battery plate coating with sulfuric acid via response surface methodology

Author(s):Chansiri Singhtauna, Nuttaporn Viteejongjaroenb

a Department of Industrial Engineering, Kasetsart University, 50 Ngamwongwan Rd. Chatuchak Bangkok, 10900, Thailand
b Master of Engineering Program in Engineering Management, Kasetsart University, 50 Ngamwongwan Rd. Chatuchak Bangkok, 10900, Thailand
International Journal of Smart Grid and Clean Energy, vol. 7, no. 2, April 2018: pp. 109-116
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.7.2.109-116
Abstract: The purpose of this research is to determine the optimal setting for the sulfuric acid coating process in lead-acid battery production. The acid coating process is planned to be applied in the original pasting process of a case study factory in order to improve battery plate quality. To determine the optimal level of factors in the acid coating process, Response Surface Methodology (RSM) using Central Composite Design (CCD) with two replications was performed. The influence of acid roller pressure, acid flow rate and baking temperature were studied. The responses in this experiment were the percentage of dried plate moisture and the number of cracks on the plate surface. The analysis of variance for the designed experiment showed the significant influence of acid flow rate and curing temperature. According to the experiment results, the optimal setting of acid flow rate is at 7 liters/minute and the curing temperature is at 200°C. The level of acid roller pressure is set at 0 MPa to give the most benefit to the production condition. The experimental verification results showed that the average percentage of dried plate moisture increased by 4.74% and there were no cracks on the surface.
Keywords: Central composite design, lead-acid battery, response surface methodology, sulfuric acid
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