Honda’s own originally developed ultra-capacitor -
Higher output, higher efficiency, and increased storage capacity

More powerful drive assistance, more efficient energy recovery during braking

Honda has independently developed a high-performance ultra-capacitor (electrical two-layered condenser) to serve as a supplementary power source to the FCX’s main power source - the fuel cell stack - for more powerful performance under various driving conditions. The ultra-capacitor combines the electrical storage capacity needed for high output and high responsiveness with solid reliability. It stores energy produced during deceleration and braking and provides powerful drive assist during startup, acceleration and at other times when an extra boost is required. The ultra-capacitor’s internal resistance is lower than that of a battery, and moreover, because it stores and discharges electricity in response to fluctuations in the fuel cell stack, it doesn’t require a converter for voltage regulation as in a battery system, so it delivers higher output. The result is improved drive-power performance and higher system efficiency.

Honda ultra-capacitor (system module)

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Charging and Discharge Functionality >>

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