电池：基于HJT行情复盘-叠层电池引领效率革命，钙钛矿产业化加速

Investment Rating - The report suggests a focus on investment opportunities related to perovskite batteries and tandem solar cells, indicating a positive outlook for these technologies in the photovoltaic industry [4]. Core Insights - Perovskite and tandem solar cells represent the next generation of photovoltaic technology, with theoretical efficiency limits of 33% and 44% respectively. Tandem cells are expected to outperform silicon cells in terms of efficiency [3][14]. - The perovskite industry is experiencing significant investment interest, even amidst a challenging secondary market for photovoltaics, indicating strong market confidence in perovskite technology as a potential catalyst for future growth [3][19]. - The report emphasizes the importance of the perovskite-silicon tandem cell as a viable upgrade path for existing silicon production lines, allowing for enhanced efficiency without the need for entirely new manufacturing processes [3][26]. Industry Chain Update - The perovskite industry is evolving with a focus on efficiency improvements and cost reductions. The report highlights that perovskite cells are entering mass production, with expectations for significant efficiency gains by the end of 2024 [23][30]. - The report outlines the competitive landscape, noting that leading companies are preparing for large-scale production, which is expected to drive down costs and improve market penetration [30][34]. Investment Strategy - Key companies to watch in the perovskite battery sector include equipment manufacturers like Jiejia Weichuang and Jing Shan Light Machinery, as well as material suppliers such as Jin Jing Technology and Yao Pi Glass [4]. - The report suggests that the perovskite industry will likely catalyze a broader recovery in the photovoltaic market once stability is achieved [19][24]. Technological Evolution - The report discusses the technological advancements in perovskite cells, particularly the shift towards vapor deposition techniques, which are becoming essential for achieving the desired efficiency and stability in mass production [30][43]. - The tandem cell technology is highlighted as having a significant potential for efficiency improvements, with projections indicating that production efficiencies could exceed 35% in the near future [28][34]. Market Dynamics - The report notes that the current low prices of silicon components are impacting the competitive landscape, making it challenging for perovskite cells to establish a foothold in large-scale ground-mounted solar projects [23][25]. - The anticipated growth in the perovskite sector is expected to be driven by applications in Building-Integrated Photovoltaics (BIPV) and other niche markets where performance advantages can be leveraged [25][28].