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31. 发明专利

JPH0447665A SQUARE CELL 失效
公开(公告)号：JPH0447665A
公开(公告)日：1992-02-17
申请号：JP15155790
申请日：1990-06-12
申请人： TOSHIBA BATTERY
发明人： OZAWA HIDEAKI , TAKAHASHI OSAMU , HATA KATSUYUKI
IPC分类号： H01M2/22 , H01M2/26
摘要： PURPOSE:To have sure electric connection by forming an electricity collecting part from a metal plate having a notch formed in parallel with an electrode plate to be welded, inserting an electrode plate leadout part in this notch, and performing the welding from the direction of lamination. CONSTITUTION:A notch 5c in an electricity collecting member 5 is inserted in the center of a plurality of pos. electrode plate leadout parts 2b formed on the top surface of an electrode body 1. Then the width of this notch 5c is decreased by applying a certain pressure by a pair of welding electrodes R1, R2 from the laminate direction of the electrode body 1 together with the outside pos. electrode plate leadout part 2b, and the welding current is flowed upon nullifying the gap between the notch 5c and leadout part 2b substantially. Now the pos. electrode plate leadout part 2b is easily welded with the electricity collecting part 5a end part of the electricity collecting plate 5. and sure connection of same types electrodes with each other is obtained. A pos. electrode plate leadout part 2b may be of such a construction that a two-dimensional base board made of punched metal etc., or a foaming metal/sintered fiber base board is subjected to press process, followed by welding of leads, wherein the metal plate thickness of the electricity collecting part 5b shall preferably be the same as or below the width of notch 5c, or favorably be 0.4-1.5mm from the viewpoint of providing a good weldability.

32. 发明专利

JPH03201367A MANUFACTURE OF PASTE TYPE ELECTRODE 失效
公开(公告)号：JPH03201367A
公开(公告)日：1991-09-03
申请号：JP33622889
申请日：1989-12-27
申请人： TOSHIBA BATTERY
发明人： YOSHIDA KAZUHIRO , HATA KATSUYUKI , ISAWA KOJI
IPC分类号： H01M4/26 , H01M2/26 , H01M4/28
摘要： PURPOSE:To efficiently and stably form a highly reliable paste type electrode for use in an alkaline storage battery by continuously welding a ribbon-shaped metal piece by means of ultrasonic seam. CONSTITUTION:The portion of a nickel sintered fiber base serving as a current collecting portion is initially compressed into a sheet metal by a roller to form a plain portion 2, the nickel sintered fiber base being a conductive porous base of three-dimensional structure. The nickel sintered fiber base is filled with a paste containing active material and then the paste on the plain portion 2 is removed and the base is dried and pressed to fabricate a filled base 1. A ribbon-shaped metal piece 3 formed of a nickel-plated steel plate serving as both a current collector and a reinforcing material is made to abut on the rotating chip 4 of an ultrasonic seam welding machine and is given ultrasonic vibration in such a manner as making the piece 3 perpendicular to the longitudinal direction of the plain portion 2, and the base 1 is moved at A speed of 1m/1min and then welding is carried out. Thereby a highly reliable paste type electrode is efficiently and stably obtained.

33. 发明专利

JP2001176505A ELECTRODE AND ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JP2001176505A
公开(公告)日：2001-06-29
申请号：JP2000305190
申请日：2000-10-04
申请人： TOSHIBA BATTERY
发明人： HATA KATSUYUKI , TERAOKA HIROHITO
IPC分类号： C01G53/04 , H01M4/32 , H01M4/52 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide an electrode of high charging efficiency at high rate. SOLUTION: This electrode includes nickel hydroxide particles satisfying the formula (1) below. 1000

34. 发明专利

JPH1140146A PASTE-TYPE ELECTRODE 失效
公开(公告)号：JPH1140146A
公开(公告)日：1999-02-12
申请号：JP19134297
申请日：1997-07-16
申请人： TOSHIBA BATTERY
发明人： HATA KATSUYUKI , ISHIDA TOMONORI , SUGITA SEIJI
IPC分类号： H01M4/24 , H01M4/32 , H01M4/70
摘要： PROBLEM TO BE SOLVED: To improve the flexibility and the property suitable for rolling by providing a three dimensional substrate and an active material mix held in the substrate, forming notch parts in the rim part regions at right angles to the longitudinal direction along the direction of the regions, and making the number of the notches in one side lower than that of the notches in the other side. SOLUTION: Notch parts 23 vertical to the longitudinal direction of rolling are formed at equal intervals in the side of a paste-type nickel positive electrode 21, which forms the outer circumference when being rolled, except for the region where a lead tab 2 is formed. Each notch part 23 has a V shape, and the interval L of the notch bottom parts is controlled to be 0. 1 mm, the depth H of each notch to be 0.05 mm, and the angle α of the notch bottom part to be 30 degrees. Notch parts are formed also in the rear side, and the interval L is controlled to be 0.5 mm and other sizes and the angle are made equal to those of the notches in the front side. Consequently, the number of the notches in the side, which becomes the inner circumference when being rolled, is equivalent to 20% of the number of the notches formed in the side which becomes the outer circumference. As a result, the curving width can be narrowed as compared with a positive electrode having no notch and warping can be avoided, even in the case the paste-filling density is increased for heightening capacity and flexibility is improved.

35. 发明专利

JPH10270022A MANUFACTURE OF PASTE ELECTRODE 失效
公开(公告)号：JPH10270022A
公开(公告)日：1998-10-09
申请号：JP7369397
申请日：1997-03-26
申请人： TOSHIBA BATTERY
发明人： KUMAGAI KATSUYA , SUZUKI YUKIO , TAJIMA MICHIKO , HATA KATSUYUKI , KIYAMA YOSHIHIRO
IPC分类号： H01M4/04 , H01M4/26
摘要： PROBLEM TO BE SOLVED: To sufficiently and evenly charge paste to a current collector by preparing the paste from powder or the like having nickel hydroxide as its main component, and charging or applying it to the collector after placing still and mixing it. SOLUTION: This manufacturing method comprises steps of preparing paste by mixing powder having nickel hydroxide as its main component, a binder, a conducting agent and water; placing the paste still (storing and aging the paste); mixing the paste; charging or applying the paste to a current collector; drying the collector applied therewith; and pressure forming the collector. Accordingly, a sufficient, long time, and even application of paste to the collector is ensured, thereby improving the yield and productivity.

36. 发明专利

JPH08222211A MANUFACTURE OF NICKEL-HYDROGEN SECONDARY BATTERY 失效
公开(公告)号：JPH08222211A
公开(公告)日：1996-08-30
申请号：JP2817495
申请日：1995-02-16
申请人： TOSHIBA BATTERY
发明人： TAJIMA MICHIKO , HATA KATSUYUKI , MATSUO HIDEHITO
IPC分类号： H01M4/26 , H01M10/30
摘要： PURPOSE: To make the activation process easier and to improve the discharging property, by storing a negative electrode formed by filling a paste including a hydrogen storage alloy to a collector, and drying and forming it, in the ambiance of a specific temperature and humidity, in a secondary battery. CONSTITUTION: In a nickel-hydrogen secondary battery, a positive electrode 1 is wound between a negative electrode 2 through a separator 3, and they are housed in a container 4 with a cylindrical form with bottom. The negative electrode 2 is manufactured by adding a conductive powder in a hydrogen storage alloy powder, and mixing together with a high polymer binder and the water to form paste, filling this paste in a collector, and press forming after drying. The negative electrode 2 is stored in an ambiance with the temperature 20 to 50 deg.C, and the relative humidity 50% or more. As a result, the surface of the hydrogen storage alloy powder is reformed, and the hydrogen storage alloy powder made in an inactive condition is activated. Consequently, a conductive agent in the positive electrode 1 is filled in the deep part, in the initial charging process of the secondary battery.

37. 发明专利

JPH05325979A NICKEL ELECTRODE FOR ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH05325979A
公开(公告)日：1993-12-10
申请号：JP10896091
申请日：1991-02-18
申请人： TOSHIBA BATTERY
发明人： TERAOKA HIROHITO , ISAWA KOJI , MIYAMOTO KUNIHIKO , HATA KATSUYUKI
IPC分类号： H01M4/32 , H01M4/80
摘要： PURPOSE:To provide an alkaline secondary battery which can be filled with a large amount of paste-state nickel active material to improve a large current discharge characteristic to further decrease generation of internal short-circuiting at the time of winding around a plate, since a metal fiber porous unit, tangled by curled or spiral fibers, is used for a conductive core unit. CONSTITUTION:Relating to a nickel positive electrode of filling a conductive core unit of a plate of an alkaline secondary battery with nickel hydroxide paste, the nickel electrode for the alkaline secondary battery is characterized by metal plating this conductive core unit with organic fiber-state nonwoven fabric conduction processed to further provide a metal fiber porous unit baked in the reducing atmosphere and by tangling fibers in curled or spiral shape.

38. 发明专利

JPH05325977A PASTE TYPE ELECTRODE FOR ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH05325977A
公开(公告)日：1993-12-10
申请号：JP13526892
申请日：1992-05-27
申请人： TOSHIBA BATTERY
发明人： TERAOKA HIROHITO , MIYAMOTO KUNIHIKO , HATA KATSUYUKI
IPC分类号： H01M4/24 , H01M4/02 , H01M4/32 , H01M4/36 , H01M4/38 , H01M4/52 , H01M4/62 , H01M4/66 , H01M4/74 , H01M4/80 , H01M6/10 , H01M10/04
摘要： PURPOSE:To provide a paste type electrode for an alkaline secondary battery of reducing generation of an internal short circuit trouble caused by contact with a counter electrode in the case of winding for fitting the electrode in the battery. CONSTITUTION:In a paste type electrode for an alkaline secondary battery of filling a conductive core unit with an active material compound mainly composed of electrode active material, the conductive core unit is obtained by baking organic fiber nonwoven fabric, applied with metal plating, in the reducing atmosphere, to further use a metal fiber porous unit having a structure of forming a metal fiber in the vicinity of a surface thicker than a metal fiber in the inside.

39. 发明专利

JPH0547376A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH0547376A
公开(公告)日：1993-02-26
申请号：JP20821691
申请日：1991-08-20
申请人： TOSHIBA BATTERY
发明人： ISAWA KOJI , TERAOKA HIROHITO , MIYAMOTO KUNIHIKO , HATA KATSUYUKI
IPC分类号： H01M4/32 , H01M10/28
摘要： PURPOSE:To suppress the occurrence of cracks and prevent an internal short circuit by winding a paste type nickel positive electrode combined with PTFE in an active material mix in the same direction as the rolling direction of a roller press, and storing it in a battery can. CONSTITUTION:Nickel hydroxide, an additive, a thickener, a. kneading liquid such as water, and a PTFE dispersion liquid are uniformly mixed to form active material paste. This paste is filled in a conducting substrate to cover the surface with the paste, and it is molded and dried. The substrate is rolled with a roller press to manufacture a paste type nickel positive electrode. The positive electrode is wound together with a paste type cadmium negative electrode in the same direction as the rolling direction of a roller press via a polyamide separator to improve the flexibility in this direction, and it is stored in a battery can. An alkaline electrolyte is injected to assemble an alkaline secondary battery.

40. 发明专利

JPH04332471A NICKEL POLE FOR ALKALINE STORAGE BATTERY 失效
公开(公告)号：JPH04332471A
公开(公告)日：1992-11-19
申请号：JP13033791
申请日：1991-05-07
申请人： TOSHIBA BATTERY
发明人： MIYAMOTO KUNIHIKO , TERAOKA HIROHITO , HATA KATSUYUKI , ISAWA KOJI
IPC分类号： H01M4/32 , H01M4/52
摘要： PURPOSE:To improve an active material utilization ratio for a paste type nickel pole for an alkaline storage battery, and its stability. CONSTITUTION:In a nickel pole for an alkaline battery mainly including in an alkali-resistant metal porous body, nickel hydroxide powders to which cobalt oxide CoO and/or Co2O3 for a chemical formula is added, the cobalt oxide which is stored at a temperature of 40 deg.C or less and at a relative moisture of 50% or less is used.

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