SAR卫星用能量功率兼顾型锂离子电池研究  

Investigation of Lithium Ion Batteries with Both Energy and Power for SAR Satellites

作　　者：宋缙华 丰震河[1] 郭向飞[1] 颜琪斌 田娟[1] 王可[1] 潘延林[1] SONG Jinhua;FENG Zhenhe;GUO Xiangfei;YAN Qibin;TIAN Juan;WANG Ke;PAN Yanlin(Shanghai Institute of Space Power Sources,Shanghai 200245,China)

机构地区：[1]上海空间电源研究所,上海200245

出　　处：《上海航天（中英文）》2020年第2期104-108,129,共6页Aerospace Shanghai（Chinese&English）

摘　　要：未来大功率合成孔径雷达(SAR)卫星的发展对储能电池组提出了轻量化、倍率高及在轨寿命长等要求,而现有的SAR卫星用功率型锂离子电池产品已无法满足未来需求。通过优化正极材料和电池设计,加入功能电解液,在保证电池功率特性的同时,显著提升了电池的能量密度和循环稳定性。本文研制出的新一代能量功率兼顾型锂离子蓄电池,额定容量为25.0 Ah,初期放电比能量达到180.0 Wh·kg-1,2 C放电容量为0.2 C容量的91.0%,1 C-100%放电深度(DOD)和2 C-30%DOD循环性能优异,可以满足下一代大功率SAR卫星的供配电需求,且大幅降低了电源系统重量,提高了卫星储能系统的利用率和平台有效载荷能力。The development of large power synthetic aperture radar(SAR)satellites in the future has put forward demands for energy storage batteries such as lightweight,high power,and long cycle life. However,the existing high power lithium ion battery products are unable to meet these demands.In this paper,a hermetically sealed lithium ion battery with both energy and power is developed. By optimizing the cathode materials and battery design and adding functional electrolyte,while ensuring the power performance,the energy density and cycle stability of the batteries are significantly improved. The nominal capacity is 25.0 Ah,the initial discharge specific energy density reaches 180.0 Wh·kg-1,the 2 C discharge capacity is 91.0% of the 0.2 C capacity,and the cycle performance of both 1 C-100% and2 C-30% depth of discharge(DOD)are excellent. All these show that the new generation lithium ion batteries with both energy and power developed in this paper can meet the power supply and distribution demands of the next generation large power SAR satellites,greatly reduce the power system weight,and improve the availability of energy storage systems and the payload capability for satellite platforms.

关 键 词：大功率合成孔径雷达卫星 锂离子电池 高比能 高功率 

分 类 号：V423.44[航空宇航科学与技术—飞行器设计]