News Release March 8, 2011

Installation of the first energy-conserving / energy-storing
rapid charging system on an expressway
in Japan at the Suita Service Area and the start of empirical testing


Stock exchange code: 6996 (Tokyo, Osaka)

Katsuhiko Furuya
Operating Officer
Chief Engineer

Nichicon Corporation has installed an energy-conserving / energy-storing rapid charging system for electric vehicles (EV) at the Suita Service Area on the Nagoya-bound side of the Meishin Expressway. This system, which combines the storage of carbon-emission-free energy from solar generation with system power, is the first on an expressway in Japan. In cooperation with Osaka Prefecture, West Nippon Expressway Company Limited and Nihon Unisys, Ltd., we will begin a Project for the Empirical Investigation of Power Storage and Rapid Recharging Systems for Electric Vehicles using this system.
We have been undertaking related development, including the installation of a solar power generation system with an electric power storage unit that uses electric double-layer capacitors (EVerCAP) developed by Nichicon. Additionally, we are developing a grid-connected power-leveling storage system that uses lithium-ion batteries to store the electricity produced from wind power generation, which fluctuates greatly. Based on these technologies, we delivered EV charging facilities with solar power generation and power storage functions to four locations in Kyoto Prefecture last year. These facilities have come to fruition by the combining of technologies that we have developed thus far for battery management, electric double-layer capacitors and grid-connected system power electronics.

Development Background

While the problem of global warming has been receiving close attention internationally and concern about environmental issues have risen, efforts made toward the realization of low-carbon societies are being advanced aggressively in countries all around the world. In the automobile industry, the development and mass production of electric vehicles has been progressing not only in Japan but also in Europe and the Americas. In order to realize the popularization of electric vehicles, the establishment of recharging facilities as a part of the infrastructure of society will become essential. In order to respond to this need, we have been working on rapid recharging stations and related technologies. Moreover, since Mitsubishi Motors Corporation's i-MiEV electric vehicle was first sold, we have been supplying them with our onboard DC-DC converters with built-in rechargers. In addition, we have begun supplying onboard rechargers for the Nissan Leaf electric vehicle. By developing and mass producing both onboard rechargers and rapid recharging facilities, which are crucial to their infrastructure, we are contributing to the popularization of electric vehicles.
The greatest virtue of the energy-conserving and energy-storing rapid recharging system that we have developed this time is that, by storing electricity from solar power generation and combining system power to recharge rapidly, the construction of expensive power reception equipment is unnecessary and there are no changes in electric power contracts. Therefore the initial investment costs and maintenance and management costs can be greatly reduced. As a result, installation is possible anywhere. even where the power reception capacity has reached its limit. We expect that this will contribute to the recharging infrastructure by allowing installation at expressway service areas as well as by providing replacements for the gasoline stations that are disappearing rapidly in sparsely populated areas.

By storing electricity from solar power generation and recharging rapidly, expensive power reception equipment construction and electric power contract changes are unnecessary, so initial investment costs and maintenance and management costs can be greatly reduced
One system can simultaneously recharge one EV rapidly and one EV at regular speed.
Main Specifications
Output voltage : DC 50 V to 500 V (rapid recharging, CHAdeMO)
AC 100 V(regular recharging)
Output capacity : 50 kW (rapid recharging)
1.5kW (regular recharging)
Power storage capacity

: 36 kWh (lithium-ion battery)
External dimensions : 1,840 mm (W) x 1,300 mm (D) x 2,200 mm (H)
Production Plant : Nichicon Kusatsu Corporation
3-1, Yagura 2-chome, Kusatsu-shi, Shiga Prefecture
(ISO9001 and ISO14001 certified)
Profile of Nichicon CORPORATION
Location : Karasumadori Oike-agaru, Nakagyo-ku, Kyoto
Representative : Ippei Takeda, Chairman & CEO
Date established : August 1, 1950
Capital stock : 14,286 million yen (As of March 31, 2010)
Employees : 7,315 (As of March 31, 2010, Consolidated)
Lines of business : Production and sales of various kinds of capacitors for electronics, electric apparatuses and power utilities, function modules, positive thermistors, switching power supplies, capacitor-applied systems and equipment, etc.
Net sales : 84,484 million yen (As of March 31, 2010, Consolidated)

Solar-powered and grid-connected dual rate electric vehicle charger with high / regular speed steps equipped with a power storage bank

< Energy-conserving and energy-storing rapid recharging system
at the Suita Service Area>
[End of document]

To view the PDF file, download Adobe Acrobat Reader from the Adobe Systems Incorporated web site.
* Adobe Acrobat Reader is a trademark of Adobe Systems Incorporated, U.S.A.

Top of page