The 10th International Summit on Power Battery Application (CBIS2025), jointly organized by the China Industrial Association of Power Sources and Battery China, recently grandly opened in Shanghai. During the core forum of the summit, Dr. Du Yixian, Dean of the Lyric Research Institute, delivered a speech that systematically elaborated on Lyric's key breakthroughs and industrialization practices in the field of all-solid-state battery manufacturing.

Dr. Du Yixian pointed out that Lyric has successfully delivered a pilot-scale mass production line for all-solid-state batteries and can also provide production lines for semi-solid-state batteries. He emphasized that there are fundamental differences between the manufacturing processes of solid-state and liquid batteries, with core challenges concentrated in key areas such as high-pressure densification processes, electrode-electrolyte integration techniques, short-circuit prevention and insulation packaging, stacking processes, and high-pressure formation.

At the conference, Battery China officially released the 2025 China Solid-State Battery Industry Development White Paper co-authored by Lyric. The white paper provides a systematic analysis of the core bottlenecks in transitioning solid-state batteries from laboratory research to mass production, proposing solutions centered on ultra-high precision lithium foil rolling, precision electrolyte film manufacturing, and in-situ interface modification. It offers a feasible roadmap to bridge the gap between R&D and commercialization, accelerating the widespread adoption of all-solid-state batteries. Simultaneously, Lyric was honored with three prestigious awards at the 9th China Battery Industry "Lithium Vision Awards": Influential Company of the Year, Innovative Enterprise of the Year, and Artisan of the Year.

Key Leap from Lab to Industrialization

Solid-state batteries, renowned for their high energy density, intrinsic safety, and long cycle life, are hailed as a revolutionary breakthrough in next-generation battery technology. However, the capability for large-scale manufacturing has remained the core bottleneck hindering their commercialization. According to Du Yixian, the manufacturing processes for solid-state and liquid batteries differ fundamentally, with key challenges concentrated in five critical areas: high-pressure densification, electrode-electrolyte integration, short-circuit-proof insulating packaging, stacking processes, and high-pressure formation. Through in-depth process research, Lyric has precisely pinpointed the core technological challenges and innovatively developed a comprehensive solution covering the entire process chain, offering the industry a feasible roadmap from laboratory prototype to mass production.

Technical Matrix Fully Deployed, Mass Production System Established

Lyric has now mastered all key process equipment required for mass production of all-solid-state batteries, building a technology matrix with 100% independent intellectual property. The comprehensive implementation of this technical system lays a solid foundation for a scalable production framework. Breakthroughs have been systematically achieved in core process equipment areas:

Dry Electrode Coating Equipment

As a front-end process in cell manufacturing, this equipment replaces the mixing, coating, and calendering machines of the traditional wet process when the dry process route is adopted. It mixes raw materials, fibrillates them to form a self-supporting film, and then composites the film with the current collector.

Adopting a high-throughput multi-roll calendering method, the equipment realizes real-time monitoring and closed-loop control of film thickness through pressure sensors, displacement sensors, thickness gauges, and other devices. It is equipped with a vibratory material screening function and achieves quantitative feeding via metering rolls.

Electrode Calendering and Electrolyte Thermal Lamination Integrated Machine

This equipment belongs to the front-end process of cell manufacturing. Its function is to first roll and compact the dried electrode sheet while controlling its thickness, and then use pressing transfer technology to peel the electrolyte film from its carrier and laminate it onto the cathode or anode roll material. By adopting electrolyte pressing transfer technology, the manufacturing quality of the electrode sheet and electrolyte can be controlled separately. The integration of electrode calendering and electrolyte thermal lamination into a single machine reduces the footprint required for the process.

• Integrated Resin Frame Printing and Stacking Machine: This equipment belongs to the middle stage of cell manufacturing. It utilizes high-throughput screen printing technology to apply resin in a rectangular frame pattern along the edges of electrodes, providing structural support and insulation under high pressure to prevent internal short circuits. By integrating resin frame printing and electrode stacking functions into a single system, it reduces the required floor space. The process is well-established, delivers excellent forming results with uniform film layers, and facilitates large-scale, continuous production.

High-Voltage Formation and Grading Equipment

As a back-end process in cell preparation, this equipment performs the first charge of the battery under specific operating conditions (current, voltage, temperature, time, and pressure) to form the SEI film and activate the electrode materials. After formation, it conducts one or more complete charge-discharge cycles on the battery, and accurately measures key performance parameters such as the actual capacity released during discharge, internal resistance, and plateau voltage of the charge-discharge curve for each battery.

The high-voltage fixture adopts a horizontal layer-pushing structure. Pressure verification/calibration is implemented through multiple methods including film pressure testers and pressure-sensitive paper, achieving optimal pressure uniformity of the laminates.

Lyric has established an efficient, eco-friendly, intelligent, and safe solid-state battery manufacturing system, fully supporting the requirements for large-scale mass production. Meanwhile, the company has always integrated work safety concepts throughout the entire process of equipment R&D. By configuring multiple safety protection measures, it has significantly enhanced the safety performance of turnkey line equipment, ensuring the health of operators and the stability of the working environment.

Co-building the Industrial Ecosystem, Accelerating Commercialization

As a leading enterprise in the new energy sector's high-end equipment field, Lyric is accelerating the industrialization of solid-state batteries through its innovative technologies and core equipment. It facilitates the deep application of solid-state batteries in various areas, including new energy vehicles, energy storage, eVTOL, humanoid robots, and consumer electronics. On the stage of CBIS 2025, Lyric leverages its technical prowess and industry commitment to pave a solid path for the large-scale mass production of all-solid-state batteries. In anticipation of the comprehensive electrification era, Lyric continues to delve into cutting-edge processes, advances intelligent manufacturing upgrades, and is dedicated to creating more efficient, safer, and smarter manufacturing solutions. By collaborating with partners across sectors, the company aims to foster high-quality, synergistic development within the new energy industry chain and jointly contribute to a sustainable future through collaborative efforts.