Title:
密閉型鉛蓄電池用セパレータ及び密閉型鉛蓄電池
Document Type and Number:
Japanese Patent JP5396399
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a separator which can improve the valve regulated lead-acid battery both in the pressure lowering prevention effect and the electrolyte stratification prevention effect, and a valve regulated lead-acid battery using the same. The separator for the valve regulated lead-acid battery of the invention is a separator for a valve regulated lead-acid battery, comprising a paper sheet manufactured by a wet papermaking process mainly made of fine glass fibers, which is characterized in that the separator is a structure in which a thin fiber layer comprising glass fibers having an average fiber diameter of 0.5 to 0.8 µm as the fine glass fibers and a thick fiber layer comprising glass fibers having an average fiber diameter of 1.3 to 1.9 µm as the fine glass fibers are laminated in the thicknesswise direction of the separator so that the one thick fiber layer is covered with the two thin fiber layers from both sides to constitute a three-layer laminated structure, wherein the average fiber diameter of the glass fibers in the all layers is 1.1 µm or more, wherein the thickness ratio of the thin fiber layers to the thick fiber layer in the all layers is 25/75 to 50/50.
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Inventors:
Masashi Sugiyama
Keita Mori
Keita Mori
Application Number:
JP2010537692A
Publication Date:
January 22, 2014
Filing Date:
November 11, 2009
Export Citation:
Assignee:
NIPPON SHEET GLASS COMPANY,LIMITED
International Classes:
H01M50/437; H01M50/457; H01M50/491
Domestic Patent References:
| JP2000268798A | 2000-09-29 | |||
| JPH06275309A | 1994-09-30 | |||
| JPH03112067A | 1991-05-13 | |||
| JPS5458833A | 1979-05-11 | |||
| JPS5214835A | 1977-02-04 |
Attorney, Agent or Firm:
Yoshihiro Shimizu
Shinichi Abe
Yuji Tsujida
Shinichi Abe
Yuji Tsujida