公开(公告)号：JP5306549B2

公开(公告)日：2013-10-02

申请号：JP2013008803

申请日：2013-01-21

Applicant: 日新製鋼株式会社

Inventor： 将 真嶋 ,  太佳夫 辻村 ,  剛 清水 ,  芳和 守田 ,  孝浩 藤井 ,  紀裕 今 ,  好江 吉田

IPC: H01M4/1393 ,  H01M4/66

CPC classification number: Y02E60/122

Abstract: PROBLEM TO BE SOLVED: To provide a negative electrode collector for lithium ion secondary battery having a high strength and a large discharge capacity. SOLUTION: The negative electrode collector uses a copper coated steel foil 10 for carrying the negative electrode active material of a lithium ion secondary battery having a steel sheet 6 composed of a ferritic stainless steel as a core, a copper coating layer 7 having an average thickness t Cu of 0.02-5.0 μm per one side on both sides thereof, an average thickness t of 3-100 μm including the copper coating layer 7 and the t Cu /t of 0.3 or less. Common steel, austenitic stainless steel, or ferritic stainless steel is applicable as the steel sheet 6. The copper coating layer 7 is an electrolytic copper plating layer (including that rolled after plating), for example. A carbon-based active material layer the density of which is increased by a strong roll press, for example, is formed on the surface of the copper coating layer 7, and the negative electrode collector is composed of the copper coated steel foil 10 and the carbon-based active material layer. COPYRIGHT: (C)2013,JPO&INPIT

公开(公告)号：JP5374742B2

公开(公告)日：2013-12-25

申请号：JP2010240595

申请日：2010-10-27

Applicant: 日新製鋼株式会社

Inventor： 和典 小沢 ,  康典 小沢 ,  裕介 本間 ,  紀裕 今 ,  好江 吉田 ,  教昌 三浦 ,  克哉 乘田 ,  節子 小浦

IPC: H01M2/02 ,  H01M2/06 ,  H01M2/26 ,  H01M2/30

CPC classification number: Y02E60/12

Abstract: PROBLEM TO BE SOLVED: To solve the problem of a conventional configuration where an external packaging material having a substrate of stainless steel plate is used, and the plate surface of the external packaging material is deformed along the shape of a tub by a pressure during a heat seal step, so that a gap appears between the external packaging material and the tub and thereby hermetic sealing performance of a battery case cannot be ensured. SOLUTION: In the external packaging material of a laminate battery, a step processing part 21 conforming to the cross-sectional shape of a tub 3 is formed previously at a position where the step processing part is sandwiched before the tub 3 is sandwiched. The step processing part 21 is provided with a first step end face extending in the width direction of the tub, a first step side surface extending from the end of the first step end face in the thickness direction of the tub, and a connection for connecting the end of the first step side surface and the end of a joint. COPYRIGHT: (C)2012,JPO&INPIT

公开(公告)号：JP5306418B2

公开(公告)日：2013-10-02

申请号：JP2011133556

申请日：2011-06-15

Applicant: 日新製鋼株式会社

Inventor： 将 真嶋 ,  太佳夫 辻村 ,  剛 清水 ,  芳和 守田 ,  孝浩 藤井 ,  紀裕 今 ,  好江 吉田

IPC: H01M4/66 ,  C21D9/46 ,  C22C38/00 ,  C22C38/50 ,  C22C38/58 ,  C22C38/60 ,  H01M4/133 ,  H01M4/1393

CPC classification number: H01M4/661 ,  B23K20/04 ,  B23K20/227 ,  B23K2201/16 ,  B23K2201/34 ,  B23K2201/38 ,  B23K2203/22 ,  B32B15/015 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/60 ,  C25D3/38 ,  C25D5/10 ,  C25D5/12 ,  C25D7/0614 ,  H01M4/0404 ,  H01M4/133 ,  H01M4/587 ,  H01M4/662 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/30 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011