Evolution of on-orbit management strategy for GEO satellite lithium-ion battery

Due to the outstanding advantage of lithium-ion battery with high energy density, the space energy storage devices of GEO satellites have been replaced by lithium-ion batteries from nickel-hydrogen batteries. The previous generation of satellites used 60~100Ah lithium-ion battery as energy storage equipment, which realized the first application of lithium-ion battery in China GEO communication satellites in orbit. The latest generation of satellites use 150~250Ah lithium-ion battery in orbit, symbolizing the mature application of lithium-ion battery with large capacity. With the wide application of large capacity and high energy density lithium-ion battery, the charging control and balance techniques have been improved accordingly, so the on-orbit management strategy of lithium-ion battery has also changed correspondingly. This paper aims to elaborate these changes.