钠离子电池在航空航天领域有哪些应用场景？

What are the application scenarios of sodium-ion batteries in the aerospace field?

钠离子电池在航空航天领域具备广阔的应用前景，是未来航空航天储能的重要发展方向，其耐高低温、抗辐射、高可靠性、低成本的核心优势，完美适配航空航天领域的极端环境与使用需求，核心应用场景主要分为四大类。一是近地轨道卫星储能，适配低轨立方星、遥感卫星、通信卫星、导航卫星等各类近地轨道卫星，钠电池具备高可靠性、长循环寿命、抗空间辐照、耐极寒极热的特点，可适配卫星的太空极端环境，同时成本远低于传统的航天级锂电池、镍氢电池，可大幅降低卫星的制造成本，完美适配大规模低轨卫星星座的建设需求，是未来低轨卫星储能的核心备选方案。二是航空飞行器辅助储能，适配电动飞机、无人机、直升机、通航飞机的辅助电源、应急备用电源、航电设备供电，钠电池安全性能优异、热稳定性高，不会出现热失控、起火爆炸的风险，同时低温性能优异，可适配高空低温环境，为飞行器的航电设备、飞控系统、应急设备提供稳定的供电保障，大幅提升飞行器的飞行安全性与可靠性。三是航天地面设备储能，适配航天发射场、测控站、地面遥感接收站的应急备用电源、离网光伏储能、移动测控设备供电，钠电池循环寿命长、免维护、自放电率低，可长期待命使用，完美适配航天地面设备的高可靠性供电需求，保障航天发射、测控任务的顺利完成。四是深空探测设备储能，适配月球探测、火星探测、小行星探测等深空探测任务的着陆器、巡视器、探测设备供电，钠电池具备极强的耐高低温性能，可适配深空探测的极端温度环境，同时抗辐射性能优异，可承受深空环境的高能粒子辐照，为深空探测设备提供长期稳定的供电保障，是未来深空探测储能的重要发展方向。目前，钠离子电池在航空航天领域仍处于研发与示范应用阶段，随着材料技术的不断升级，未来有望在航空航天领域实现大规模的商业化应用，为我国航空航天事业的发展提供核心储能支撑。

Sodium-ion batteries have broad application prospects in the aerospace field and are an important development direction of aerospace energy storage in the future. Their core advantages of high and low temperature resistance, radiation resistance, high reliability and low cost are perfectly suitable for the extreme environment and use demand of the aerospace field. The core application scenarios are mainly divided into four categories. First, energy storage for near-earth orbit satellites, which is suitable for various near-earth orbit satellites such as low-orbit cube satellites, remote sensing satellites, communication satellites and navigation satellites. Sodium batteries have the characteristics of high reliability, long cycle life, space radiation resistance, and extreme cold and heat resistance, which can adapt to the extreme space environment of satellites. At the same time, the cost is much lower than that of traditional aerospace-grade lithium batteries and nickel-hydrogen batteries, which can greatly reduce the manufacturing cost of satellites, and is perfectly suitable for the construction demand of large-scale low-orbit satellite constellations, and is the core alternative scheme for low-orbit satellite energy storage in the future. Second, auxiliary energy storage for aircraft, which is suitable for auxiliary power supply, emergency backup power supply, and avionics equipment power supply of electric aircraft, unmanned aerial vehicles, helicopters, and general aviation aircraft. Sodium batteries have excellent safety performance and high thermal stability, and will not have the risk of thermal runaway, fire and explosion. At the same time, they have excellent low temperature performance, which can adapt to the low temperature environment at high altitude, provide stable power supply guarantee for the avionics equipment, flight control system and emergency equipment of the aircraft, and greatly improve the flight safety and reliability of the aircraft. Third, energy storage for aerospace ground equipment, which is suitable for emergency backup power supply, off-grid photovoltaic energy storage, and mobile measurement and control equipment power supply of aerospace launch sites, measurement and control stations, and ground remote sensing receiving stations. Sodium batteries have long cycle life, maintenance-free, and low self-discharge rate, which can be used for long-term standby, perfectly suitable for the high-reliability power supply demand of aerospace ground equipment, and ensure the smooth completion of aerospace launch and measurement and control tasks. Fourth, energy storage for deep space exploration equipment, which is suitable for power supply of landers, rovers and detection equipment for deep space exploration missions such as lunar exploration, Mars exploration and asteroid exploration. Sodium batteries have extremely strong high and low temperature resistance, which can adapt to the extreme temperature environment of deep space exploration. At the same time, they have excellent radiation resistance, which can withstand the high-energy particle irradiation in the deep space environment, provide long-term stable power supply guarantee for deep space exploration equipment, and is an important development direction of deep space exploration energy storage in the future. At present, sodium-ion batteries are still in the stage of R&D and demonstration application in the aerospace field. With the continuous upgrading of material technology, it is expected to achieve large-scale commercial application in the aerospace field in the future, and provide core energy storage support for the development of China's aerospace industry.