Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshiyuki Muraoka0
Haruya Nakai0
Yoichiro Tsuji0
Date of Patent
October 14, 2008
Patent Application Number
10420894
Date Filed
April 23, 2003
Patent Primary Examiner
Patent abstract
A nickel-metal hydride storage battery having a spirally wound electrode group including: (a) a positive electrode including an active material layer containing nickel hydroxide and a positive electrode core material; (b) a negative electrode including an active material layer containing a hydrogen storage alloy and a negative electrode core material; and (c) a separator interposed between the positive and negative electrodes, wherein the separator includes a hydrophilicity-imparted non-woven fabric including polyolefin or polyamide and has a thickness of 0.04 to 0.09 mm, and the percentage occupied by the cross section “SS” of the separator in the transverse cross section “S” of the electrode group is not greater than 25%.
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