04377787 is referenced by 71 patents and cites 2 patents.

A system for measuring the state of charge of a storage battery is disclosed which corrects charging and discharge electrical quantities of the battery in view of temperature and charging efficiency of the battery, and the like to precisely measure the state of charge thereof by digital-operation. There is also disclosed a system correcting, by digital-operation, the variation in capacity of the battery due to the variation in life of the battery and/or the self-discharge thereof as well, to thereby measure the state of charge with higher precision.

Title
System for measuring state of charge of storage battery
Application Number
6/176356
Publication Number
4377787
Application Date
August 8, 1980
Publication Date
March 22, 1983
Inventor
Fumio Ukigaya
Higashiyamato
JP
Hiroshi Noguchi
Higashikurume
JP
Gou Kawamura
Tokyo
JP
Kazunori Ohnishi
Tokyo
JP
Keinosuke Murakami
Machida
JP
Kotaro Wakui
Mitaka
JP
Noriyoshi Sasaki
Honjoh
JP
Hiroaki Yamamoto
Fukaya
JP
Takao Kikuoka
Honjoh
JP
Agent
Pearne Gordon Sessions McCoy & Granger
Assignee
Hitachi Denshi Kabushiki Kaisha
JP
Hitachi
JP
Nippon Hoso Kyokai
JP
Shin Kobe Electric Machinery
JP
IPC
G01N 27/42
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