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1. 发明专利

JP2001006724A CYLINDRICAL ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JP2001006724A
公开(公告)日：2001-01-12
申请号：JP17687999
申请日：1999-06-23
申请人： TOSHIBA BATTERY
发明人： YUKIZONO TOSHIJI , MORIFUJI YOSHIHIRO , SATO TOSHIKI
IPC分类号： H01M2/26 , H01M10/28
摘要： PROBLEM TO BE SOLVED: To provide a cylindrical alkaline secondary battery of high capacity and reduced insulation defective. SOLUTION: In this cylindrical alkaline secondary battery having such a structure that an electrode group 6 manufactured by spirally winding a positive electrode 3 having an electrically connected a strip collecting tab 2 at an upper end and a negative electrode 4 through a separator is contained in a container 1, the strip collecting tab 2 is disposed in a range of an angle to a line connecting the center of the electrode group 6 to a winding end of the positive electrode 3, among the upper end of the positive electrode 3 at an outer circumference, is larger than 90 deg. and smaller than 270 deg..

2. 发明专利

JP2000113903A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JP2000113903A
公开(公告)日：2000-04-21
申请号：JP28511498
申请日：1998-10-07
申请人： TOSHIBA BATTERY
发明人： MORIFUJI YOSHIHIRO , YUKIZONO TOSHIJI , SATO TOSHIKI , KONDO MASASHI , NISHIWAKI ATSUSHI
IPC分类号： H01M2/16 , H01M10/28
摘要： PROBLEM TO BE SOLVED: To provide an alkaline secondary battery prevented from a contact short circuit caused by a positive electrode including a conductive base board having three-dimensional structure and provided with an excellent internal pressure characteristic. SOLUTION: In an alkaline secondary battery provided with a group of electrodes having a positive electrode including a three-dimensional structure conductive base board and a negative electrode spirally wound via a separator and an alkali electrolyte, an auxiliary separator 14 is fixed on the negative electrode side of a main separator 5 arranged on the outside of the winding starting part of the positive electrode 3, and the auxiliary separator 14 at least faces the winding starting part of the positive electrode 3 via the main separator 5.

3. 发明专利

JPH10247514A NICKEL-HYDROGEN SECONDARY BATTERY 失效
公开(公告)号：JPH10247514A
公开(公告)日：1998-09-14
申请号：JP4810497
申请日：1997-03-03
申请人： TOSHIBA BATTERY
发明人： YANAGAWA HIROAKI , ASANO MASAKI , SUZUKI HIROSHI , YUKIZONO TOSHIJI , MORIFUJI YOSHIHIRO
IPC分类号： H01M10/28 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide a nickel-hydrogen secondary battery which can maintain the proper charge/discharge cycle lifetime and can prevent liquid leak in storage and at the time of quick charging. SOLUTION: A nickel-hydrogen secondary battery is equipped with a cylindrical vessel 1 having a bottom, an alkali electrolytic solution accommodated in the vessel 1, a bunch of electrodes 5 accommodated in the vessel 1 and formed so that a paste form positive electrode 2 containing nickel hydroxide and electroconductive material and a paste form negative electrode 4 containing hydrogen storage alloy are wound spirally with a separator 3 interposed, wherein the electrolytic solution is poured into the vessel 1 in an amount of 85-100% of the capacity of the space V1 -V2 -V3 , where V1 is the capacity from the inside bottom of the vessel 1 to the top of the bunch 5 of electrodes, V2 is solid volume of the positive and negative electrodes and separator, and V3 is the bobbin spatial volume of the bunch of electrodes 5.

4. 发明专利

JP2002157989A ALKALINE STORAGE BATTERY 失效
公开(公告)号：JP2002157989A
公开(公告)日：2002-05-31
申请号：JP2000352747
申请日：2000-11-20
申请人： TOSHIBA BATTERY
发明人： MORITA MAKOTO , TSUKIASHI MASAHIKO , HOSOBUCHI KAORU , MORIFUJI YOSHIHIRO
IPC分类号： H01M2/16 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide an alkaline storage battery having a separator suitable for an electrode group of a laminated structure used in a square shape or a coin shape different from a cylindrical shape. SOLUTION: This alkaline storage battery has the electrode group by laminating a positive electrode and a negative electrode by interposing the separator, and an alkaline electrolyte. The separator is mainly composed of nonwoven fabric selected from a fiber group of a polyolefine resin. The nonwoven fabric is composed of at least mixed fiber of a fiber group having an average fiber diameter of 6 μm or more and a fiber group having an average fiber diameter less than 6 μm, the total average fiber diameter is 7 μm or less, a Metsuke unit quantity is 35 to 55 g/m2, permeability is 20 to 40 cm3/cm2/sec, pressurizing force when compressed up to the thickness of 100 μm is 0.2 MPa or more, and a hydrophilic group is chemically bonded in the mixed fiber.

5. 发明专利

JP2002124243A NICKEL-HYDROGEN SECONDARY BATTERY 失效
公开(公告)号：JP2002124243A
公开(公告)日：2002-04-26
申请号：JP2000316704
申请日：2000-10-17
申请人： TOSHIBA BATTERY
发明人： MORIFUJI YOSHIHIRO , TSUKIASHI MASAHIKO , TAJIMA MICHIKO , YUKIZONO TOSHIJI , MUGIMA ISAO
IPC分类号： H01M2/16 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide a nickel-hydrogen secondary battery with an improved self-discharging characteristic. SOLUTION: This nickel-hydrogen secondary battery is characterized by being equipped with a positive electrode 2 containing hydroxide nickel powder, a negative electrode 4 containing a hydrogen storage alloy, and a separator 3 disposed between the positive electrode 2 and the negative electrode 4 and containing polyolefinic fibers capable of adsorbing ammonium ions (NH4+) and administered hydrophilicity-giving treatment.

6. 发明专利

JP2000138070A CYLINDRICAL ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JP2000138070A
公开(公告)日：2000-05-16
申请号：JP31141598
申请日：1998-10-30
申请人： TOSHIBA BATTERY
发明人： HATA KATSUYUKI , MORIFUJI YOSHIHIRO , YUKIZONO TOSHIJI , SATO TOSHIKI
IPC分类号： H01M2/18 , H01M10/28
摘要： PROBLEM TO BE SOLVED: To provide an alkaline secondary battery having a high manufacturing yield due to a low shortcircuit occurrence rate, and a rise in battery internal pressure restrained. SOLUTION: In this cylindrical alkaline secondary battery, an electrode group having a stacked sheet of a positive electrode plate, a separator and a negative electrode plate overlaid on top of each other and spirally wound with the positive electrode plate kept inside, is sealed in a battery can, together with an alkaline electrolyte. In this case, a sub-separator 10 having a plurality of openings 10a is laid in such a state as overlaid on a separator 3 at the winding start position of a stacked sheet B.

7. 发明专利

JP2000113902A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JP2000113902A
公开(公告)日：2000-04-21
申请号：JP28420898
申请日：1998-10-06
申请人： TOSHIBA BATTERY
发明人： YUKIZONO TOSHIJI , MORIFUJI YOSHIHIRO , SATO TOSHIKI , NISHIWAKI ATSUSHI , KONDO MASASHI
IPC分类号： H01M2/16 , H01M10/28
摘要： PROBLEM TO BE SOLVED: To provide an alkali secondary battery prevented from defective insulation caused by a positive electrode including a conductive base board having three-dimensional structure and provided with an excellent charge- discharge cycle life. SOLUTION: In an alkali secondary battery provided with a group of electrodes having a positive electrode including a three-dimensional structure conductive base board and a negative electrode spirally wound via a separator and an alkali electrolyte, an auxiliary separator 14 is fused with a main separator 5 arranged on the outside of the winding starting part of the positive electrode 3. The fusing area is equivalent to 1 % or less of an area of the main separator 5, and fusion is carried out via four or more positions.

8. 发明专利

JP2002117892A ALKALI SECONDARY BATTERY 失效
公开(公告)号：JP2002117892A
公开(公告)日：2002-04-19
申请号：JP2000309567
申请日：2000-10-10
申请人： TOSHIBA BATTERY
发明人： MORIFUJI YOSHIHIRO , ASANO MASAKI
IPC分类号： H01M4/80 , H01M2/26 , H01M4/32 , H01M10/28
摘要： PROBLEM TO BE SOLVED: To provide an alkali secondary battery, of which the variations in internal resistance are suppressed, and the rate of generating internal short circuit is reduced. SOLUTION: In the alkali secondary battery possessing an electrode group 5, in which a positive pole 2 and a negative pole 4 intervened with a separator 3, and wound in a shape of a swirl, the above positive pole 2 has a 3-dimensional porosity structure, a conductive substrate, in which an average hole diameter positioned inside surface at the time of winding, is large compared with the average hole diameter positioned out side surface in winding, and a number of holes within the surface having the smaller average diameter is in limits of 1.1 to 2, when a number of holes within the surface having larger average diameter is set to 1, a collector fixed to the surface located inside of the above conductive substrate, in winding, and a positive pole binder agent filled in the above conductive substrate. The above collector is positioned between a point that is a first one round of winding from the beginning of the winding finishes, and an end surface of the finishing the windings.

9. 发明专利

JP2001110412A MANUFACTURING METHOD FOR ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JP2001110412A
公开(公告)日：2001-04-20
申请号：JP28292899
申请日：1999-10-04
申请人： TOSHIBA BATTERY
发明人： MORIFUJI YOSHIHIRO , YUKIZONO TOSHIJI , SATO TOSHIKI
IPC分类号： H01M4/62 , H01M4/24 , H01M4/26
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of an alkaline secondary battery which can improve low-temperature discharge characteristic of the alkaline secondary battery, without generating a large amount of waste liquid. SOLUTION: A manufacturing method of a negative electrode for an alkaline secondary battery comprises a step to prepare a paste by mixing rare earth elements and nickel hydrogen absorption alloy powders, conductive powders, and bonding agent in the presence of alkaline aqueous solution, and a step to fill the paste in a current collector body or apply the paste thereto.

10. 发明专利

JPH1140126A SEALED BATTERY 失效
公开(公告)号：JPH1140126A
公开(公告)日：1999-02-12
申请号：JP19134197
申请日：1997-07-16
申请人： TOSHIBA BATTERY
发明人： TSUGA YUTAKA , YUNOKIZONO TOSHIJI , MORIFUJI YOSHIHIRO
IPC分类号： H01M2/16 , H01M2/18 , H01M10/04
摘要： PROBLEM TO BE SOLVED: To provide a sealed battery capable of preventing the occurrence of internal short-circuit, while an electrode group is wound without causing lowering of high rate discharge characteristic or rise in an internal pressure. SOLUTION: This sealed battery is provided with an electrode group 5, in which a positive electrode 2 and a negative electrode 4 are wound in vortex shape with a separator 3 sandwiched between them, the separator 3 consisting of a main separator 3a made of a synthetic resin fiber and an auxiliary separator 3b with its length shorter than the main separator 3a fused at a part of the main separator 3a coming into contact with a winding start part of at least one electrode, such that a fusion area of the auxiliary separator 3b against the main separator 3a is 30 to 70% of the area thereof.

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