制约固态电池量产的关键瓶颈：等静压设备如何成为固态电池的“必过关卡”？

Core Viewpoint - Solid-state batteries are considered the ultimate form of next-generation power batteries, with significant performance and safety potential attracting global automotive and battery giants to compete in this field. However, a key manufacturing bottleneck exists in achieving a solid-solid interface contact between the electrodes and electrolytes, which is crucial for mass production [2][18]. Group 1: Overview of Isostatic Pressing Technology - Isostatic pressing technology has been successfully applied for over 70 years in various industries, including ceramics and alloy materials [5][8]. - The technology utilizes the incompressibility of fluid media to uniformly apply pressure, facilitating the densification of materials [9][10]. - There are three types of isostatic pressing based on the temperature and forming process: cold, warm, and hot isostatic pressing, each with different applications and performance characteristics [12][13]. Group 2: Application in Solid-State Batteries - The introduction of isostatic pressing in solid-state batteries primarily addresses the densification stage after electrode formation, enhancing the contact quality between the electrolyte and electrodes [18][22]. - Isostatic pressing significantly improves the interface density, reduces internal resistance, and enhances ionic conductivity and cycle performance, making it a core process for achieving high energy density and stability in batteries [25][26]. Group 3: Industry Challenges and Opportunities - Current challenges for isostatic pressing equipment include safety concerns, low production capacity, and high costs, which hinder its integration into high-speed production lines [4][17]. - The global market for isostatic pressing equipment in solid-state battery production is projected to reach 2.9 billion by 2029, driven by the anticipated growth in solid-state battery capacity [47][48]. Group 4: Key Players and Developments - Major players in the isostatic pressing equipment market include Quintus, Xinxin Technology, and domestic manufacturers like Chuanxi Machinery and Baotou Kefa, all of which are advancing their technology for solid-state battery applications [38][39][40]. - Battery manufacturers such as CATL and BYD are actively validating and integrating isostatic pressing technology into their production processes, accelerating the industrialization of solid-state batteries [40][41]. Group 5: Future Prospects - The solid-state battery industry is expected to complete pilot testing by 2025, with small-scale production commencing in 2026-2027, leading to large-scale manufacturing by 2028-2029 [47][48]. - The anticipated increase in global solid-state battery capacity from 17 GWh in 2024 to 190 GWh by 2029 will significantly drive demand for isostatic pressing equipment [47][48].