中泰证券：卫星太阳翼市场持续扩容 钙钛矿电池有望成为主流技术路线

Core Insights - The demand for satellite internet construction is urgent, driven by the rigid application needs in communication, navigation, and remote sensing, with a low completion rate of satellite constellations in China [1] - Space computing is leading to new growth opportunities in satellite demand, with significant advancements in satellite-based computing systems [2] - Solar wings are the only efficient and long-term energy supply solution for near-Earth commercial space, constituting about 12%-24% of satellite value [3] Group 1: Satellite Internet Demand - There is a strong subjective and objective demand for satellite internet construction, with advantages such as wide coverage, strong disaster resistance, and rapid deployment [1] - The International Telecommunication Union (ITU) has established principles for satellite frequency and orbit usage, emphasizing the urgency of satellite internet development in China due to limited low-Earth orbit resources [1] Group 2: Space Computing Advancements - The traditional "ground computing" model is evolving to a "space computing" model to address issues of data latency and processing cycles, with significant projects like Starcloud-1 and SpaceX's Starlink V3 planned for future deployment [2] Group 3: Solar Wing Technology - Solar wings are critical components of satellite energy systems, with increasing surface areas leading to enhanced power supply capabilities [3] - The transition from rigid to flexible solar wings allows for larger deployment areas and improved power output, making them suitable for high-power and multi-satellite launch scenarios [4] Group 4: Technological Differences Between China and the US - The US favors low-cost silicon solutions due to its rocket capabilities, while China is exploring perovskite batteries for higher power-to-weight ratios, aiming to maximize payload space in single launches [5] - Perovskite batteries are expected to become the next mainstream technology for solar wings in China, offering lower costs and higher efficiency [5]