Shinsung Eng said on Jan. 29 it has completed an ultra-low humidity super dry room technology for mass production of all-solid-state batteries. Shinsung Eng secured super dry room design and operating technology capable of achieving an ultra-low dew point of minus 70 degrees Celsius or lower. It built a technology portfolio that can be expanded to a minus 80-grade ultra-low humidity environment depending on process characteristics. It is an integrated solution based on actual mass production environments, including dehumidifiers, dry rooms, dry booths and control systems.

All-solid-state batteries are extremely sensitive to moisture during processing. They require stricter humidity control than conventional batteries using liquid electrolytes. The industry is analysing that mass production is possible only if it can stably realise an ultra-low dew point environment of minus 60 degrees Celsius or lower, and in some processes at the minus 70 to minus 80 level.

Based on AI, the system uses real-time data on outside air and return air conditions and changes in process load. AI predicts and optimises heater temperature, rotor speed, regeneration airflow and other factors. The company stressed that the technology can cut energy consumption by up to 20 percent while structurally addressing operating costs, the biggest burden in mass production of all-solid-state batteries.

Shinsung Eng also addressed issues with existing dry booths that had been used simply to block moisture inflow. It secured technology that can further dehumidify even residual trace moisture inside the booth. It said this has provided new dehumidification products for building ultra-low dew point dry rooms and a dry booth linked operation system.

Shinsung Eng produces not only specialised all-solid-state air-conditioning products and systems but also DHU and BCU in-house. It is internalising core air-conditioning technologies across battery production lines.

A Shinsung Eng official said, "All-solid-state batteries are not a simple change of materials, but a field that demands a paradigm shift in the manufacturing environment itself." The official added, "We have completed up to the demonstration stage, including super dry rooms and AI dehumidification control, and based on experience and demonstration data accumulated in semiconductor and secondary battery dry rooms, we have secured technological capabilities that can realistically support mass production of all-solid-state batteries." The official said, "We have recently disclosed these technologies through a technology seminar and are accelerating technical discussions with battery manufacturers at home and abroad," and added, "We will establish ourselves as a prepared technology partner."