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Development of Electric Double-layer Capacitor System for Fuel Cell Vehicle

Article of Honda R&D Technical Review Vol.15 No.1

Summary

An electric double-layer capacitor system has been developed for the Honda FCX fuel cell vehicle. This high-power capacitor system offers more than 30% higher output power and more than twice the power density of the nickel-metal hydride batteries used in hybrid electric vehicles (HEV) at an equivalent system voltage, and satisfies automotive power requirements. The new system is equipped with a capacitor cell protection system which monitors capacitor voltage and provides equalization and fail detection functions, and heat insulation and a cooling system control temperature increase both when the vehicle is parked and when it is running. The effectiveness of these systems has enabled the new capacitor to satisfy durability and reliability requirements in unit tests and running tests.

Reference

(1) Ohzono, K., Kayano, M.: Development of High Power Storage for the CIVIC Hybrid, HONDA R&D Technical Review, Vol. 14, No. 2, p. 31-36 (2002)

Author (organization or company)

Koji TAMENORI(Wako Research Center)、Koichi YAMAMOTO(Wako Research Center)、Akihiro ANEKAWA(Wako Research Center)、Takeshi TAGUCHI(Wako Research Center)、Shinya KUBOTA(Wako Research Center)、Makoto KAWAHARA(Wako Research Center)

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