Addressing the safety concerns and application limitations of traditional liquid batteries, solid-state batteries have emerged as a highly promising key new energy technology, becoming an industrial "high ground" fiercely contested by companies in related fields.

Chart via Qianzhan Industry Research Institute

Currently, in response to challenges such as short-term production difficulties, high costs, and high interfacial resistance, the demand for new materials and new equipment continues to evolve. High-precision dispensing processes are playing a crucial role.

As an expert in high-precision dispensing applications, Quark Research Institute is actively focused on and deeply engaged in the solid-state battery industry sector, helping more industrial enterprises tackle technological development and mass-production challenges.

· Technological Transformation Drives Demand for High-Precision Dispensing

In terms of technical principles, compared to traditional liquid lithium batteries, solid-state batteries replace the liquid electrolyte and separator with a solid-state electrolyte. This avoids safety hazards associated with electrolyte corrosion, volatilization, leakage, and the potential formation of dendrites over long-term use.

Technical Principle Demonstration Diagram

Furthermore, the solid-state electrolyte itself is non-flammable and has a high thermal decomposition temperature, offering significantly stronger safety performance. It not only addresses the technical bottlenecks of liquid batteries but also provides crucial support for diverse application needs such as drones and low-altitude aircraft.

Different structures lead to process variations. Beyond the more complex battery and electrolyte preparation, the mid-stage cell assembly and encapsulation processes, particularly the lamination/press layering used for all-solid-state batteries, present more demanding manufacturing requirements, becoming a key factor affecting mass production.

Image sourced from the internet

To ensure good interfacial contact between the battery electrode sheets and the electrolyte, significant pressure is applied between the solid-solid interfaces. This can easily cause deformation at the edges of the electrode sheets, thereby increasing the risk of short circuits.

High-precision dispensing has become a critical step in the electrode sheet encapsulation process. Parameters such as dispensing accuracy, uniformity, and morphology quality have become important process metrics for solid-state battery manufacturers.

· Quark's Precision Dispensing Process Supports Solid-State Battery Industry Development

For the widely adopted electrode tab edge dispensing process, Quark's piezo valve solutions, with their superior precision and consistent quality, have successfully matured as a domestic alternative to imported precision dispensing valves in relevant application fields. This achievement is backed by extensive on-site validation and recognition.

Currently, Quark's piezo valve applications are compatible with common adhesive materials used in solid-state battery insulation and bonding processes, such as UV-curable adhesives and hot melt adhesives. They support dispensing process requirements with a minimum line width of 250µm, a minimum dot diameter of 200µm, and a minimum adhesive thickness of 50µm.

UV Adhesive Dispensing for Electrode Frame Sealing (Meets Insulation Requirements)

• Parameters: Adhesive width: 1mm; Adhesive thickness: 150µm; Thickness variation: <5µm.

• Performance: Adhesive lines are free of bubbles and splatter, with uniform morphology. The process maintains high quality and repeatable precision over extended dispensing periods.

Beyond the electrode encapsulation stage, Quark Research Institute continuously enriches its product applications based on accumulated collaboration experience. By integrating features like a dispensing process knowledge base and intelligent dispensing monitoring, we meet the demands of complex-path, challenging-environment, and stringent quality-control scenarios, as well as multi-process integrated dispensing applications.

Regarding product capabilities, Quark Research Institute has now expanded its expertise to include piezo micro-dispensing (pL level) and EHD electrohydrodynamic (fL level) applications. We collaborate with partners to explore process requirements for front-end preparation stages, such as solid electrolyte slurry coating, addressing needs for even higher precision and broader fluid medium compatibility.

The domestic solid-state battery industry is currently in a phase of rapid development, with mass production demands becoming increasingly urgent. Quark Research Institute remains committed to supporting this industry evolution by providing high-precision fluid control applications throughout the entire product lifecycle.

We welcome you to message us with your specific process requirements. A dedicated specialist will contact you to discuss sample support!