摘要
基于柔性薄膜砷化镓(GaAs)太阳电池、全固态薄膜锂电池(TFB)和柔性管理电路组成的发电-储能结构一体化电源系统,可以用作便携式应急电源,也可与无人飞行器、便捷式电子设备、无线传感网络节点等结合,实现自身能源的闭合供给,满足相关装备对电能源全天候、长时间、模块化等多样化应用的需求。但在实际工作中,系统的电转化效率只有30%左右,大部分太阳光的能量经太阳电池吸收后会转化成热,TFB在充电过程中也会发热。电源系统中,柔性太阳电池和TFB采用键合的方式结合,由于薄膜各层材料的热膨胀系数不同,产生的热量会在电源系统内部导致热应力,造成键合材料的分离,甚至破坏整个电源系统。通过计算机模拟柔性电源系统在月球表面环境下的工作状态,建立电源系统结构模型以及热传递数学模型,仿真得到不同结构电源系统工作时的温度场和应力场分布情况,对发电-储能一体化柔性电源系统结构优化和工作状态的掌握具有指导意义。
Power generation and energy storage integrated power systems are composed of flexible thin GaAs solar cells,thin film lithium batteries(TFBs),and flexible management circuits.They not only can be used as portable emergency power supply,but also can be combined with unmanned aerial vehicles,convenient electronic devices,wireless sensor network nodes,etc.to achieve energy self-sufficiency and meet the diversified application requirements of energy system related equipment,such as all-weather,long time,and modularization.However,in actual application,the energy conversion efficiency of the system is only about 30%,most energy will be dissipated as heat after being absorbed by the solar cells,and the TFBs will release heat during charging.In power generation and energy storage integrated power systems,the flexible solar cells and TFBs are combined in the form of bonding.Since the thermal expansion coefficients of the materials of different layers of the film are different,the heat generated will lead to thermal stress,which will separate the boned material and even damage the whole power system.In this paper,a power system structure model and a mathematical heat transfer model are established based on the simulation of the working conditions of the flexible system on the moon surface,and the distributions of the temperature field and the stress field of the power system with different structures are obtained.The obtained results are of guiding significance for the structure optimization and the working status mastering of power generation and energy storage integrated power systems.
作者
陆鸣雷
张圳
周丽华
王小顺
叶晓军
李红波
孙利杰
吴勇民
靳洋
刘世超
LU Minglei;ZHANG Zhen;ZHOU Lihua;WANG Xiaoshun;YE Xiaojun;LI Hongbo;SUN Lijie;WU Yongmin;JIN Yang;LIU Shichao(School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;State Key Laboratory of Space Power-Source Technology,Shanghai Institute of Power-Sources,Shanghai 200245,China)
出处
《上海航天（中英文）》
CSCD
2021年第6期85-92,共8页
Aerospace Shanghai（Chinese&English）
基金
载人航天领域预先研究项目(四批050402)
上海市科学技术委员会项目(19DZ1206500)。
关键词
柔性
太阳电池
全固态薄膜锂电池
一体化电源系统
应力仿真
flexible
solar cell
thin film lithium battery(TFB)
integrated power system
stress simulation
作者简介
陆鸣雷(1995-),男,硕士研究生,主要研究方向为光伏组件模拟、缺陷检测;通信作者:周丽华(1983-),女,高级工程师,主要研究方向为太阳电池。
