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1. (WO2018105060) LIQUID LEAD-ACID BATTERY

Pub. No.:    WO/2018/105060    International Application No.:    PCT/JP2016/086395
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Thu Dec 08 00:59:59 CET 2016
IPC: H01M 10/12
H01M 2/16
Applicants: HITACHI CHEMICAL COMPANY, LTD.
日立化成株式会社
Inventors: HARADA Motoko
原田 素子
ARAKI Shingo
荒城 真吾
OKOSHI Tetsuro
大越 哲郎
SHIBAHARA Toshio
柴原 敏夫
HONDA Mitsutoshi
本田 光利
KIMURA Takayuki
木村 隆之
TAKAHASHI Shin
高橋 心
Title: LIQUID LEAD-ACID BATTERY
Abstract:
The purpose of the present invention is to minimize stratification of an electrolyte solution and improve durability in a liquid lead-acid battery having a predetermined size. One embodiment of the present invention is a liquid lead-acid battery that has a width dimension of D or more according to the categories defined in JIS D5301 and that is provided with: a positive electrode plate (10); a negative electrode plate (9); a separator (11) arranged between the positive electrode plate (10) and the negative electrode plate (9); a membrane (14) arranged between the negative electrode plate (9) and the separator (11); an electrolyte solution; and a battery case for accommodating the positive electrode plate (10), the negative electrode plate (9), the separator (11), the membrane (14), and the electrolyte solution, wherein the membrane (14) comprises pores having an average pore size of 15 µm or less and the porosity of the membrane (14) is 93% or less.