Investment Rating - The report rates the electric equipment industry as "Positive" [3] Core Viewpoints - The all-solid-state battery industry is currently in its initial development stage, with significant challenges related to material and equipment that need to be overcome for mass production [2][36] - The report suggests that the all-solid-state battery may be at a similar stage to the new energy vehicle industry in 2009-2010, characterized by policy catalysis, technology convergence, and supply chain improvement [36] - It is anticipated that small-scale production of all-solid-state batteries may begin around 2027, with large-scale production expected after 2030 [36] Summary by Sections Industry Overview - The all-solid-state battery technology has made initial progress, primarily focusing on sulfide electrolytes, but faces significant challenges, particularly with the solid-solid interface [2][10] - The report identifies the solid-solid interface as a critical issue, which is influenced by both material properties and manufacturing processes [10][20] Material Challenges - The main materials for all-solid-state batteries include solid electrolytes, with sulfide electrolytes being the focus. Key challenges include air sensitivity and the need for cost reduction [18] - The cost of lithium sulfide, a core material, is currently high due to limited production capacity, with prices previously at 1000 RMB/g and expected to reach 500,000 RMB/ton as a potential industrialization milestone [18] Equipment and Manufacturing - The report highlights the importance of pressure in both the manufacturing and operational phases of all-solid-state batteries, with specific attention to the need for appropriate stacking pressure to ensure effective ion transport [20][23] - Equipment such as isostatic pressing is crucial for maintaining solid-solid contact during manufacturing, but scalability remains a challenge [23][26] Performance Metrics - The report emphasizes that the core performance metrics for all-solid-state batteries will focus on cycle stability and rate performance, particularly after multiple cycles of use [28] - Current industry standards suggest that single-cell power batteries should achieve a cycle life of 1000-1500 cycles, with a capacity retention rate of at least 80% [27][28]