The industrialization advancement of all-solid-state batteries invariably hinges on the trade-off between precision and efficiency at the manufacturing end. As iterations of material systems edge closer to their performance ceilings, the integration level and control capability of process equipment emerge as core variables governing product yield, cost, and the pace of large-scale commercialization. For the critical upstream processes of electrode preparation and solid electrolyte lamination, the fragmented workflows and insufficient precision inherent to conventional discrete production lines have become universal mass-production bottlenecks plaguing the entire industry.

Bottlenecks at Solid-Solid Interfaces: Inherent Limitations of Segmented Manufacturing Processes

The core performance anchor of solid-state batteries lies in the solid-solid contact interface formed between electrodes and solid electrolytes. Unlike liquid lithium-ion cells that rely on electrolyte infiltration to achieve sufficient interfacial contact, the lamination quality between solid electrolytes and electrode sheets directly dictates cell internal resistance, rate capability and cycle life. The prevailing electrolyte transfer printing process today requires prefabricated electrolyte films to be peeled off carrier substrates before thermal lamination with electrodes. The entire workflow imposes extremely stringent requirements on uniform temperature distribution, precision pressure regulation and intact film integrity.

The industry is universally confronted with three practical bottlenecks:

First, insufficient intactness during electrolyte membrane delamination. Substrate residue and membrane cracking directly undermine interfacial uniformity and raise contact impedance.

Second, electrode calendering and electrolyte lamination are implemented as two separate processes. Material circulation not only increases plant floor space and material waste but also creates barriers to coordinated optimization of process parameters across both stages. This makes it impossible to simultaneously achieve the target electrode compaction density and intact electrolyte membrane layers.

Third, wet co-coating is entirely unworkable for technical routes featuring incompatible electrode-electrolyte solvent systems, leaving dry transfer as one viable alternative. This further raises stringent requirements for equipment precision and operational stability.

Parallel Advancement of Precision & Integration: Technological Breakthrough of Lyric Integrated Machine

To address universal industry pain points, Lyric has developed an all-in-one machine integrating electrode calendering and electrolyte thermal lamination. By consolidating these two core processes into a single piece of equipment, it delivers a one-stop industrialized solution for front-end manufacturing of solid-state batteries.

This equipment adopts the electrolyte pressing transfer technical route and applies infrared preheating treatment, enabling solid-state electrolytes to be smoothly peeled off the substrate and completely transferred onto electrode surfaces. It fundamentally resolves longstanding industry challenges of low peeling yield and fragile membranes inherent to conventional transfer processes. Designed with independent process windows, the machine allows separate parameter tuning for electrode calendering and electrolyte thermal lamination. It delivers superior electrode densification while preventing structural damage to electrolyte membranes caused by high pressure, enabling ultra-precise quality control of both functional layers. Meanwhile, the system endows production lines with enhanced operational flexibility and broader material compatibility.

In terms of core control accuracy, the machine achieves composite film thickness precision of ≤±2 μm and a roll gap adjustment accuracy of 1 μm. Equipped with a closed-loop control system, it enables precise regulation of membrane uniformity and provides robust hardware support for forming low-impedance, highly consistent solid-solid interfaces. The integrated all-in-one design drastically reduces equipment footprint. In addition, each functional module can be independently activated or shut down. The machine caters to multi-scheme process verification during R&D stages as well as mass production of high-performance products. It is particularly suited for technical scenarios that demand ultra-high electrolyte quality or involve incompatible solvent systems between electrodes and electrolytes.

The industrial leap of solid-state batteries from lab-scale samples to large-volume mass production hinges on fundamental breakthroughs in manufacturing equipment. Lyric’s integrated all-in-one machine boasts multiple strengths including ultra-precise control, process integration and wide material compatibility. It delivers reliable equipment backing for iterative upgrades of solid-state battery manufacturing processes, and brings solid certainty to the entire industry in unlocking viable mass-production routes.