Abstract: The space power is required for high energy density，high reliability and long running time. The research of new energy technologies has drawn a great attention. This paper describes the development of these technologies，including new chemical energy as regenerative fuel cell（RFC），lithium-ion batteries；new solar photovoltaic；solar and nuclear dynamic with high and long running power. And it is focused on the characteristics and the problem in these application space power systems：accumulators，solar array-accumulators，fuel cells and nuclear power，etc. The flow and heat transfer of these space power systems are described in this paper. Also，this paper has some future view on the space power：solar cells have the development for the thin film，chemical power need the breakthrough of the new technology，the progress of the nuclear and solar dynamic power technology are essential to the long-running and high power in space.

Key words: Space power, Solar cells, Fuel cells, Nuclear electric generating systems., space power, solar cells, fuel cells, nuclear electric generating systems, microgravity

摘要： 航天电源具备高能量密度、高可靠性、长时间供电等特点， 近年来多种航天电源发展迅速。本文介绍了再生型燃料电池、锂离子蓄电池等新型化学能源，新型的太阳能电池技术，太阳能热动力发电系统和核能热发电系统的现状；着重阐述了在航天飞行器上应用的化学蓄电池、太阳能电池阵-蓄电池组、燃料电池、核能发电系统等电源系统的特点及存在的问题。对于航天电源运控相关的流动与传热问题做了深入探讨，并展望了航天电源的研究方向：太阳能电池有向薄膜化方向发展的趋势，化学蓄电池主要配合太阳能电池；燃料电池适用于长时间远距离活动；核能适用大功率、长航时航天器。

关键词: 航天电源, 太阳能电池, 燃料电池, 核能发电系统, 航天电源, 太阳能电池, 燃料电池, 核能发电系统, 微重力