News Release July 27, 2010

Nichicon to become the first in Japan
to install a "solar-powered and grid-connected dual rate EV charger
with high/regular speed steps equipped with a power storage bank,"
a carbon-free EV charging solution, in the Kyoto Prefectural Office

NICHICON CORPORATION
Contact:
Katsuhiko Furuya
Operating Officer
Chief Engineer
PROJECT
TEL:+81-75-231-8461
FAX:+81-75-256-4158
Introduction

Nichicon Corporation will install a "solar-powered and grid-connected dual rate EV charger with a power storage bank" in the Kyoto Prefectural Office. It is a system that allows high-speed and regular electric vehicle charging, utilizing solar-sourced, carbon-free energy to the maximum extent possible.

The energy storage unit uses a hybrid power storage bank comprised of lithium ion batteries and Nichicon’s electric double-layer capacitors “EVerCAP”. Electric double-layer capacitors “EVerCAP” have lower resistance than lithium ion batteries and can store electricity efficiently with respect to fluctuations in solar power generation output due to changes in the weather. Compared to lithium ion batteries whose electrodes undergo chemical reactions, electric double-layer capacitors are distinctive for their minimal characteristic degradation as a result of their charge-discharge reactions being limited to adsorption-desorption reactions of electrolyte ions on their electrode interface. Electric double-layer capacitors help to prolong the life of lithium ion batteries by performing rapid charge and discharge.

Nichicon has installed a solar power generation system with an electric energy storage unit that uses "EVerCAP", Nichicon’s electric double-layer capacitors, on the roof of its head office building in Kyoto, and has also been working to develop new systems such as “grid-connected power smoothing and storage system.” This levels out the extremely volatile wind-power generated electricity output by storing electricity in lithium ion batteries. In March of this year, Nichicon also installed a solar-sourced electric vehicle charging facility with an electric energy storage capacity. This is another device that features a hybrid power storage bank and is located in the Nishikyogoku Sports Park in Kyoto City. These facilities were created by integrating Nichicon’s battery management technology, electric double-layer capacitor technology and grid-connected power electronics technology. This expertise has been cultivated and refined over several years.

 
Development Background

Countries around the world are making aggressive efforts to reduce their carbon footprint because of the heightened international awareness in the areas of global warming and the increasing attention paid to environmental concerns. While Japan’s track record is one of the best in the world in terms of energy conversion efficiency, it is lagging behind Europe and the United States in introducing clean energy. This is partly attributable to the number of daylight hours, weather, and the lack of consistent wind for wind-power generation. Such natural phenomena cannot be changed, but it is possible to increase opportunities to utilize carbon-neutral energy by efficiently storing clean energy.
It was from such a perspective that Nichicon developed a "solar-powered and grid-connected dual rate electric vehicle charger with a power storage bank" that allows carbon-free charging by combining energy storage technology. This is an area of remarkable technological innovation and clean energy generation.

 
Characteristics
-
High/regular speed electric vehicle charging capability using carbon-free energy from solar power generation.
-
A longer energy storage unit lifetime thanks to a hybrid power storage bank that uses lithium ion batteries and "EVerCAP", Nichicon’s electric double-layer capacitors.
-
A single system is capable of charging a total of three electric vehicles simultaneously: one at high speed and two at regular speed.
 
Main Specifications
Rated voltage : DC 50 V - 500 V (high-speed charge)
AC 200 V (regular charge)
Equipment capacity : 45 kW
Output power during charging

: 30 kW (high-speed charge)
10 kW (regular charge)
Rated frequency : 60 Hz
Storage energy : 10 kWh (lithium ion batteries)
80 Wh (electric double-layer capacitors)
Dimensions : Stand unit: 370 mm (W) x 250 mm (D) x 1,318 mm (H)
Storage/high-speed charging/converter unit:
2,407 mm (W) x 840 mm (D) x 2,270 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

 
< Solar-powered and grid-connected dual rate electric vehicle charger with high /
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