快科技2月2日消息，特斯拉在锂电池生产技术上取得重大突破，马斯克直言这是一项卓越成就。 马斯克在X平台上写道："实现干电极工艺的大规模应用，是锂电池生产技术的一项重大突破，但却极 其困难。祝贺@Tesla工程、生产和供应链团队以及我们的战略合作伙伴供应商取得这一卓越成就！" 据悉，这项新技术能明显降低电池生产成本和能耗，简化工厂生产流程，还能快速扩大生产规模。 对消费者而言，核心利好在于电动车续航能力的提升。干电极电池电量容纳量可增加20%左右，直接推 动续航里程延长。目前，搭载该技术的4680电池已应用于部分Model Y车型，相关车型的生产正逐步恢 复正常。 从行业发展视角而言，特斯拉的这项技术突破具有重要行业意义。该技术打破了传统锂电池制造的诸多 局限，彻底解决了溶剂污染问题，推动锂电池产业向绿色低碳方向转型。此外，干电极技术兼容性较 强，可适配未来更先进的电池产品，同时有助于特斯拉降低对外部供应链的依赖。 业内人士普遍认为，此举将加速干电极技术在行业内的普及，推动电动车及储能产品向低成本、高效 率、长续航的方向发展。 I 0 the res P NEWS AND 1889 TO SHUND 75 ch ...

Investment Rating - The report does not explicitly state an investment rating for the industry Core Insights - The cylindrical battery, particularly the 4680 battery developed by Tesla, is gaining traction in the automotive sector due to its high energy density, improved charging capabilities, and cost efficiency [4][24] - Major automotive companies such as Tesla, BMW, and Porsche have announced plans to adopt large cylindrical batteries in their upcoming models, indicating a shift towards this technology in high-end vehicles [10][12] Summary by Sections Section 1: Overview of Cylindrical Batteries - Cylindrical batteries are characterized by their cylindrical steel casing, which offers high production consistency and lower costs compared to other battery types, although they have lower energy density and assembly efficiency [2][3] Section 2: Development History - The first commercial lithium battery was invented by Sony in 1991, with Tesla pioneering the use of cylindrical batteries in electric vehicles starting with the Roadster in 2008. The introduction of the 4680 battery in 2020 marked a significant advancement, offering five times the capacity of the 21700 battery and a 16% increase in driving range [4][6] Section 3: Adoption by Automotive Companies - In early 2025, Tesla announced a production capacity of approximately 16 GWh for its 4680 batteries, while BMW and Porsche also confirmed their plans to integrate large cylindrical batteries into their new models [11][12] Section 4: Advantages and Challenges of Large Cylindrical Batteries - Large cylindrical batteries offer several advantages, including high energy density, lightweight, fast charging capabilities, and long cycle life. However, they also face challenges such as complex manufacturing processes and higher production costs compared to alternatives like lithium iron phosphate batteries [17][22] Section 5: Technological Advances - The report highlights the significance of full-tab ear technology and dry electrode technology in enhancing the performance and reducing the manufacturing costs of large cylindrical batteries. Full-tab ear technology improves power output and thermal stability, while dry electrode technology simplifies the production process and enhances electrode performance [26][28][36] Section 6: Market Positioning - The high performance and technical barriers associated with large cylindrical batteries align well with the market positioning of premium automotive brands, as seen with Tesla's Cybertruck, which is among the most expensive models in its lineup [22][24]