Design and control of the hybrid lithium-ion/lead–acid battery

Abstract

This paper describes method of design and control of a hybrid battery built with lead–acid and lithium-ion batteries. In the proposed hybrid, bidirectional interleaved DC/DC converter is integrated with lithium-ion battery, and is an interface for lead–acid battery. Control system allows uninterrupted operation of the hybrids even in the case of a sudden shut down of the lithium-ion battery. Thanks to the proposed reference voltage selection method, system operates stable in a parallel connection. Experimental tests were carried out using prototypes of the proposed batteries.

Keywords

• Hybrid battery
• Parallel operation
• Lead-acid battery
• Lithium-ion battery