公开(公告)号：US20170263913A1

公开(公告)日：2017-09-14

申请号：US15509275

申请日：2015-08-05

Applicant: GS Yuasa International Ltd.

Inventor： Mikihito HASEGAWA ,  Shinsuke OKI ,  Yu KOJIMA

IPC: H01M2/30 ,  H01M10/08 ,  H01M4/21 ,  H01M4/56 ,  H01M2/28 ,  H01M2/02 ,  H01M2/04 ,  H01M2/06 ,  H01M2/16 ,  H01M2/18 ,  H01M10/14 ,  H01M4/68

CPC classification number: H01M2/307 ,  H01M2/024 ,  H01M2/0242 ,  H01M2/043 ,  H01M2/06 ,  H01M2/1653 ,  H01M2/18 ,  H01M2/28 ,  H01M4/21 ,  H01M4/56 ,  H01M4/685 ,  H01M10/06 ,  H01M10/08 ,  H01M10/14 ,  H01M2220/20 ,  H01M2300/0011 ,  Y02E60/126

Abstract: A lead-acid battery includes an electrode plate assembly, a battery case, a positive electrode strap, a negative electrode strap, a positive electrode post, a negative electrode post, a cover, and an electrolyte solution. A negative electrode bushing provided in the cover and the negative electrode post together constitute a negative electrode terminal. A maximum value of a gap between an outer circumferential surface of the negative electrode post and an inner circumferential surface of the negative electrode bushing in the negative electrode terminal is 0.5 mm or more and 2.5 mm or less. A rib is provided in a lower part of the negative electrode bushing, and a minimum value of a protrusion height of the rib is 1.5 mm or more and 4.0 mm or less. A distance between a surface of the electrolyte solution and a lowermost portion of the negative electrode bushing is 15 mm or less.

公开(公告)号：US20190058180A1

公开(公告)日：2019-02-21

申请号：US16080193

申请日：2017-02-24

Applicant: GS Yuasa International Ltd.

Inventor： Yu KOJIMA ,  Mikihito HASEGAWA

IPC: H01M2/24 ,  H01M2/04 ,  H01M2/28 ,  H01M4/73 ,  H01M10/12 ,  H01M2/02

Abstract: Provided is a lead-acid battery where a positive electrode shelf of one of two elements accommodated in cell chambers disposed adjacently to each other and a negative electrode shelf of the other element are electrically connected to each other through a penetrating connection body penetrating a partition wall, the penetrating connection body includes a positive electrode side member continuously formed with the positive electrode shelf and a negative electrode side member continuously formed with the negative electrode shelf, and the positive electrode side member and the negative electrode side member form a welded portion filled in a penetration hole formed in the partition wall for forming cell chambers by partitioning and are brought into close contact with a periphery of the penetration hole. In such an a lead-acid battery, a distance A between upper end surfaces of the positive electrode shelf and the negative electrode shelf and a lower end portion of the penetration hole is set to 3 mm to 5 mm, a distance B between an upper end portion of the penetration hole and an upper end portion of the penetrating connection body is set to 3 mm to 5 mm, a distance C between the upper end portion of the penetrating connection body and a level of the electrolyte solution is set to 0 mm or more, and a height of the positive electrode grid portion and the negative electrode grid portion is set to 100 mm or more.

公开(公告)号：US20190006660A1

公开(公告)日：2019-01-03

申请号：US15748965

申请日：2016-07-21

Applicant: GS Yuasa International Ltd.

Inventor： Kenji IZUMI ,  Yu KOJIMA ,  Mikihito HASEGAWA ,  Shinsuke OOKI

IPC: H01M4/14 ,  H01M10/08 ,  H01M2/36 ,  H01M4/06

Abstract: Disclosed is a lead-acid battery including: a battery container; an electrolyte and an electrode plate group in the battery container; and a battery container cover that hermetically seals an opening of the battery container, wherein the electrode plate group includes a positive electrode plate including a positive electrode active material, a negative electrode plate including a negative electrode active material, and a separator interposed between the positive electrode plate and the negative electrode plate, the battery container cover is provided with a liquid port, a liquid port plug that closes the liquid port, and a sleeve that hangs down from the liquid port to a prescribed liquid surface height of the electrolyte, a sodium ion concentration contained in the electrolyte is 1 mmol/L to 90 mmol/L, and a specific surface area of the positive electrode active material is 5 m2/g to 9 m2/g.