Honda Unveils Demonstration Production Line for All-Solid-State Batteries Located in Sakura City, Tochigi Prefecture, Japan By Investing.com

TOKYO, Nov 21, 2024 – (JCN Newswire) – – Honda Motor Co., Ltd. (NYSE:) today unveiled the demonstration production line for all-solid-state batteries, which is being developed independently by Honda toward mass production. The line was constructed on the property of Honda R&D Co., Ltd. (Sakura), located in Sakura City, Tochigi Prefecture, Japan. While conducting technical verification to establish a mass production process on this demonstration line, Honda will determine the basic specifications of the battery cells, with an aim to begin applying its all-solid-state batteries to electrified models that will be introduced to market in the second half of the 2020s.

For the purpose of establishing the mass production process for its all-solid-state batteries, Honda built this demonstration line that replicates processes required for the mass production. The demonstration line has a total floor area of approximately 27,400 m2 (295,000 ft2), and is equipped with facilities and equipment that enable verification of each production process, including weighing and mixing of electrode materials, coating and roll pressing of electrode assembly and the formation of cells, and assembly of the module. The construction of the facility building was completed in spring of this year, with almost all of the key equipment necessary for the verification now installed. Honda is planning to begin battery production on this demonstration line in January 2025 and will conduct verification of mass production technologies and costs for each process, while also developing battery cell specifications.

Based on the conventional production process for liquid lithium-ion batteries, the Honda all-solid-state battery production process adopts a roll-pressing technique which will contribute to an increase in the density of the solid electrolyte layers, a process unique only to the production of all-solid-state batteries, and makes continuous pressing possible. With the adoption of the roll-pressing technique, Honda will strive to increase the degree of interfacial contact between the electrolyte and the electrodes and also increase overall productivity. Moreover, by consolidating and speeding up a series of assembly processes, including the bonding of positive and negative electrodes, Honda will strive to significantly reduce the production time per cell. Furthermore, Honda is also working to reduce indirect costs of battery production, including power consumption, by implementing…