公开(公告)号：US20180205072A1

公开(公告)日：2018-07-19

申请号：US15744534

申请日：2016-05-24

Applicant: GS Yuasa International Ltd.

Inventor： Kazuhiro SUGIE ,  Yoshinobu SATO ,  Takeshi CHIBA ,  Yu KOJIMA ,  Etsuko OGASAWARA ,  Kenji IZUMI

IPC: H01M4/14 ,  H01M10/06 ,  H01M4/73

CPC classification number: H01M4/14 ,  H01M4/20 ,  H01M4/68 ,  H01M4/73 ,  H01M10/06 ,  H01M10/12 ,  Y02E60/126

Abstract: A lead acid storage battery including: positive electrode plates each including a positive electrode grid and a positive electrode active material, and negative electrode plates each including a negative electrode grid and a negative electrode active material. The positive and negative electrode plates are stacked alternately with a separator therebetween to form an electrode plate group. The battery further includes: a battery container having cell chambers each containing the electrode plate group and electrolyte, and a cover sealing an opening of the battery container. The positive electrode active material has a pore distribution having a peak in region A from 0.03 μm to 0.1 μm and a peak in region B from 0.2 μm to 1.0 μm, and a ratio AM/BM of peak AM in region A to peak BM in region B is 0.34 or more and 0.70 or less. The negative electrode grid contains bismuth in an amount of 1 ppm or more and 300 ppm or less.

公开(公告)号：US20180026310A1

公开(公告)日：2018-01-25

申请号：US15549867

申请日：2015-12-04

Applicant: GS Yuasa International Ltd.

Inventor： Kenji IZUMI ,  Yoshinobu SATO ,  Etsuko OGASAWARA ,  Takeshi CHIBA ,  Yu KOJIMA ,  Kazuhiro SUGIE

IPC: H01M10/12 ,  H01M4/73 ,  H01M4/68 ,  H01M4/14 ,  H01M4/62

CPC classification number: H01M10/12 ,  F02N11/0862 ,  H01M4/14 ,  H01M4/62 ,  H01M4/625 ,  H01M4/68 ,  H01M4/685 ,  H01M4/73 ,  H01M2004/027 ,  H01M2004/028 ,  Y02E60/126

Abstract: A lead acid battery including: a positive electrode plate including a positive electrode grid and a positive electrode active material; a negative electrode plate including a negative electrode grid and a negative electrode active material; an electrode plate group including the positive electrode plate, the negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate; a battery container including a plurality of cell chambers each accommodating the electrode plate group and an electrolyte; and a lid sealing an opening of the battery container. A ratio P/N of mass P of the positive electrode active material to mass N of the negative electrode active material is 1.25 or more and 1.65 or less. The negative electrode grid contains bismuth in an amount of 1 ppm or more and 300 ppm or less.