Honda unveils demonstration production line for all-solid-state batteries located in Sakura City, Japan

21 November 2024, 14:43:16

Honda unveiled the demonstration production line for all-solid-state batteries developed independently by Honda for mass production. The line was constructed on Honda's property 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.

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 various measures, including the establishment of production control technology that minimizes the low dew point environment necessary to ensure work safety and battery performance.

By increasing cost competitiveness of its all-solid-state batteries through the adoption of a highly efficient production process and by expanding the application of the batteries to a wide range of Honda mobility products, not only automobiles but also motorcycles and aircraft, Honda aims to further reduce battery costs by taking advantage of economies of scale. Through these initiatives, Honda will offer new value made possible by its innovative all-solid-state battery technologies to an even greater number of customers and expand the joy of mobility.

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