Honda Launches Demonstration Line for All-Solid-State BatteriesHonda Launches Demonstration Line for All-Solid-State Batteries

Honda has officially unveiled a demonstration production line for its all-solid-state batteries, located at its R&D facility in Sakura City, Tochigi Prefecture, Japan. The production line, constructed to replicate mass production processes, represents a key step toward Honda’s goal of integrating all-solid-state batteries into its electrified mobility products.

The facility spans approximately 27,400 square meters (295,000 square feet) and includes equipment to verify each step of battery manufacturing. This includes tasks such as electrode material preparation, assembly processes like roll pressing, and the assembly of modules. By January 2025, Honda plans to begin test production, refining both manufacturing techniques and battery cell specifications.

Advancing all-solid-state battery production

Honda's approach incorporates a roll-pressing technique adapted from conventional lithium-ion battery processes. This method, unique to all-solid-state battery production, increases the density of the solid electrolyte layers and enhances the contact between electrodes and electrolytes. These advancements aim to improve productivity while reducing production time per cell.

In addition to streamlining the assembly process, Honda is addressing indirect costs such as power consumption. For example, the company has developed production control technologies to optimize the low-dew-point environment required for safety and battery performance. These measures support Honda’s efforts to reduce overall production costs and expand the application of all-solid-state batteries to automobiles, motorcycles, and even aircraft.

By leveraging economies of scale and its expertise in mass production technologies, Honda aims to make its all-solid-state batteries more cost-competitive. Below is a Honda video overview of the facility and its SSB technology:

Positioning for the next generation of mobility

All-solid-state batteries are widely regarded as a critical advancement for electric vehicles (EVs), addressing challenges such as range, cost, and charging time. Honda’s development efforts include simplifying cooling structures to capitalize on the heat-resistant properties of its battery designs, ultimately improving performance and affordability.

This initiative aligns with Honda’s broader commitment to achieving carbon neutrality for all products and operations by 2050. By 2040, the automaker plans for battery-electric and fuel-cell electric vehicles to represent 100% of its new vehicle sales.

'Important milestone'

Honda’s R&D Co., Ltd. President Keiji Otsu emphasized the significance of the demonstration line:

“The all-solid-state battery is an innovative technology that will be a game changer in this EV era,” Otsu said. “Now, the start of operation of our demonstration production line for our all-solid-state batteries is in sight, and we can say that we have reached an important milestone for Honda and the country of Japan.”

Honda remains focused on accelerating the integration of all-solid-state batteries into its mobility products. As Otsu noted, “We will continue taking on challenges to launch our mobility products equipped with our all-solid-state batteries as quickly as possible so that Honda can offer new value to our customers."

Click below for an inside look at the new demonstration production line.