Research on high-rate and repeat frequency discharge lithium battery for electromagnetic launch primary power supply

Abstract Lithium battery with excellent comprehensive performance can effectively improve the firing frequency of railgun, firing times of railgun, system integration and security of electromagnetic launch weapon system. The development of lithium-ion batteries were introduced in this paper, mainly from the material system of lithium battery, analyzes all kinds of lithium battery, combined with electromagnetic emission weapon system for high voltage cascade characteristics of primary lithium battery power supply demand, points out the advantages and disadvantages of the lithium battery materials system, determine the improved after optimization of high ratio of lithium iron phosphate battery as primary power battery components. Two kinds of lithium batteries have been tested by high power discharge test, which proves that the high power lithium iron phosphate batteries have better performance. The high power lithium iron phosphate battery with soft package, high discharge rate, high power density and good security, can meet the requirements of high power, high power density and good integration of the primary source of electromagnetic emission.