Development of long life and large capacity VRLA batteries for telecommunication infrastructure

Author

Suzuki, M. ; Akamatsu, Koichiro ; Hatanaka, T. ; Ohhara, T. ; Tsubota, M.

Author_Institution

Japan Storage Battery Co., Ltd., Japan

fYear

2001

fDate

18-18 Oct. 2001

Firstpage

1

Lastpage

5

Abstract

The authors have developed two types of valve-regulated lead-acid (VRLA) cells with capacities of 500 Ah and 1000 Ah at 10-hour rate, as well as VRLA batteries composed of these cells and having capacities from 500 Ah to 6000 Ah for telecommunication backup applications. Incorporating the technologies acquired over many years of VRLA battery development and manufacturing enabled the authors to design battery covers more quickly and exactly. Additionally, FEM analyses of natural frequency and strength made it possible to verify that the steel frame construction which holds cells has superior earthquake resistance.

Keywords

emergency power supply; finite element analysis; lead acid batteries; reliability; telecommunication power supplies; 15 y; Pb; Pb-acid secondary batteries; VRLA batteries; backup applications; battery capacity; battery life; development; earthquake resistance; manufacturing; natural frequency; steel frame construction; strength analysis; telecommunication infrastructure; valve-regulated lead-acid cells;

fLanguage

English

Publisher

iet

Conference_Titel

Telecommunications Energy Conference, 2001. INTELEC 2001. Twenty-Third International

Conference_Location

Edinburgh, UK

ISSN

0537-9989

Print_ISBN

0-85296-744-6

Type

conf

DOI

10.1049/cp:20010570

Filename

988503