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1. 发明专利

JPH03145058A PASTE TYPE NICKEL POSITIVE ELECTRODE 失效
公开(公告)号：JPH03145058A
公开(公告)日：1991-06-20
申请号：JP28167189
申请日：1989-10-31
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HATA KATSUYUKI , YOSHIDA KAZUHIRO , ISAWA KOJI , HASEBE HIROYUKI , SASAKI KUNIHIKO
IPC分类号： H01M4/52 , H01M4/32 , H01M4/62 , H01M10/30
摘要： PURPOSE:To prevent sudden oxidation reaction in an atmosphere containing oxygen and to obtain good activity by using paste containing nickel hydroxide as a main active material and also containing cobalt monoxide whose surface is covered with a higher cobalt oxide layer. CONSTITUTION:Paste containing nickel hydroxide as a main active material and also containing cobalt monoxide whose surface is covered with a higher cobalt oxide layer is used. Even if the paste is exposed in the air, oxidation reaction progresses only gradually. Since an oxide other than higher oxide is rarely produced, the manufacture of an electrode in a specific atmosphere is made unnecessary and the electrode is manufactured in the normal atmosphere. In addition, the storage performance of cobalt monoxide is increased. Sudden oxidation reaction in an atmosphere containing oxygen is prevented and good activity is obtained.

2. 发明专利

JPH0353448A MANUFACTURE OF CLOSED TYPE ALKALINE STORAGE BATTERY 失效
公开(公告)号：JPH0353448A
公开(公告)日：1991-03-07
申请号：JP18831189
申请日：1989-07-20
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HATA KATSUYUKI , ISAWA KOJI , YOSHIDA KAZUHIRO , HASEBE HIROYUKI , SASAKI KUNIHIKO
IPC分类号： B01J19/10 , H01M2/36
摘要： PURPOSE:To shorten the injecting time for an electrolyte by receiving an electrode group prepared through the process of combining positive and negative- pole electrodes together, with a separator interposed therebetween, in a canning body and subsequently injecting the electrolyte into the canning body while applying ultrasonic waves to the canning body. CONSTITUTION:Ultrasonic waves are applied to a canning body 1 in injecting an electrolyte into the canning body 1 to be permeated into positive and negative-pole electrodes and also into a separator after receiving an electrode group 2 prepared through the process of combining the positive and negative- pole electrodes together, with the separator interposed therebetween, in the canning body 1. Since the surface tension of the electrolyte to the separator and to the like can be accordingly lowered, the electrolyte can be quickly permeated into both the separator and the electrodes. Since also air present in the electrodes and in the separator, both received in the canning body, can be speedily removed permeability of the electrolyte can be expedited. The injecting time for the electrolyte can thus be shortened to mass-produce a storage battery.

3. 发明专利

JPH02227960A MANUFACTURE OF NONSINTERED ELECTRODE FOR ALKALINE STORAGE BATTERY 失效
公开(公告)号：JPH02227960A
公开(公告)日：1990-09-11
申请号：JP4728389
申请日：1989-02-28
申请人： TOSHIBA CORP , TOSHIBA BATTERY
发明人： HASEBE HIROYUKI , YOSHIDA KAZUHIRO , HATA KATSUYUKI , ISAWA KOJI , SASAKI KUNIHIKO
IPC分类号： B23K11/06 , B23K9/00 , B23K11/24 , B23K35/04 , H01M4/26
摘要： PURPOSE:To strongly weld a ribbon-shaped metal strip to a conductive core by bringing a welding disk electrode formed by interposing an insulating disk between two disk electrodes into contact with the ribbon-shaped metal strip placed on the conductive core, and by supplying electricity to each electrode from a power source. CONSTITUTION:A ribbon-shaped metal strip 12 is supplied to a part to be welded of a conductive core 11 filled with a pasty material, and a welding disk electrode 13 is brought into contact with the metal strip 12. The welding electrode 13 is formed by interposing an insulating disk 14 between two disk electrodes 151, 152. When electricity is passed from a welding power source 16 to the electrodes 151, 152 insulated with the disk 14 while the disk electrode 13 is rotated, electricity flows from the electrode 151 to the electrode 152, and the metal strip 12 is welded to the conductive core 11 by Joule heat. The ribbon- shaped metal strip 12 is strongly welded to the conductive core 11.

4. 发明专利

JPH01320762A NICKEL ELECTRODE FOR ALKALINE STORAGE BATTERY 失效
公开(公告)号：JPH01320762A
公开(公告)日：1989-12-26
申请号：JP15226088
申请日：1988-06-22
申请人： TOSHIBA CORP , TOSHIBA BATTERY
发明人： SASAKI KUNIHIKO , HASEBE HIROYUKI , KANDA MOTOI , ISAWA KOJI , HATA KATSUYUKI , YOSHIDA KAZUHIRO
IPC分类号： H01M4/80
摘要： PURPOSE:To obtain a nickel electrode having sufficient mechanical strength, high utility of active material, and high capacity density by forming a conductive core with a metal fiber porous sinter having three dimensional continuous voids, and specifying the weight per area of metal fibers in a nickel electrode. CONSTITUTION:Metal fibers such as nickel fibers and nickel-plated carbon fibers are formed in a nonwoven fabric sheet, and sintered in a reducing atmosphere to manufacture a metal fiber porous sinter having three dimensional continuous voids. This sinter is used as a conductive core. The weight per area of metal fibers in a nickel electrode is specified to 400-700g/m . Since the metal fiber porous sinter has layered metal short fibers, it has sufficient durability and mechanical strength. Since the contact area of active material with the current collector is increased, electronic conductivity and capacity density are increased.

5. 发明专利

JPS6445056A PASTE TYPE NICKEL POSITIVE ELECTRODE 失效
公开(公告)号：JPS6445056A
公开(公告)日：1989-02-17
申请号：JP20128587
申请日：1987-08-12
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HATA KATSUYUKI , ISAWA KOJI , SASAKI KUNIHIKO
IPC分类号： H01M4/32 , H01M4/62
摘要： PURPOSE:To surely apply to a conductive core having a two-dimensional structure, to prevent coming off, and to reduce cost by specifying the amount of sodium polyacrylate mixed with a pasty active material containing nickel hydroxide. CONSTITUTION:Sodium polyacrylate or polyacrylic acid is used as a binder of a pasty active material containing nickel hydroxide and a binder, and the content of the binder is limited to 0.2-1.0wt.% based on the nickel hydroxide. The pasty active material is applied to a conductive core having a two-dimensional structure such as a metal net, a punched metal, and an expanded metal to form a nickel positive electrode. By specifying the content of sodium polyacrylate or polyacrylic acid, the active material is surely applied to the conductive core having a two-dimensional structure, the coming off during production and in charge-discharge is prevented, the life is increased, and the cost is reduced.

6. 发明专利

JPS63241861A NICKEL POSITIVE ELECTRODE 失效
公开(公告)号：JPS63241861A
公开(公告)日：1988-10-07
申请号：JP7398387
申请日：1987-03-30
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HATA KATSUYUKI , ISAWA KOJI , SASAKI KUNIHIKO
IPC分类号： H01M4/32 , H01M4/52
摘要： PURPOSE:To prevent the falling of active substance and swelling of positive electrode during charge and discharge time by using Cd hydroxide-layer formed Cd oxide as an ingredient of paste to control the porosity of Cd oxide in a specific range after the discharge treatment. CONSTITUTION:A Ni positive electrode is formed by filling a paste with an active substance of Ni hydroxide in a conductive core body. In the Ni positive electrode, a paste containing Cd oxide 2-15 wt.% against Ni hydroxide forms a Cd hydroxide layer at the surface. After installing in a battery for charging and discharging, the Ni positive electrode is arranged to have porosity of 18-35 vol.% with filled paste in the conductivity core body. At the time, if the porosity is 18 vol.% or less, falling of the active substance and swelling of the positive electrode itself appear distinctly, and if it is 35 vol.% or more, the energy densi ty decreases to a low level. Hence, by controlling the porosity at the above- mentioned value, falling of the active substance and swelling of the positive substance are prevented and a large energy density is obtained.

7. 发明专利

JPH04160763A NICKEL HYDROGEN SECONDARY BATTERY 失效
公开(公告)号：JPH04160763A
公开(公告)日：1992-06-04
申请号：JP28178190
申请日：1990-10-22
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HASEBE HIROYUKI , TAKENO KAZUHIRO , MITSUYASU KIYOSHI , SATO YUJI , TAKAHASHI HIROYUKI , HAYASHIDA HIROTAKA , SARUWATARI ICHIRO , ISAWA KOJI , HATA KATSUYUKI , YOSHIDA KAZUHIRO , SASAKI KUNIHIKO
IPC分类号： H01M4/38 , C22C1/00 , H01M4/24 , H01M4/32 , H01M4/52 , H01M4/62 , H01M10/30 , H01M10/34
摘要： PURPOSE:To improve the utilization factor of a positive electrode by forming a mixture including nickel hydroxide and cobalt monoxide in which its surface is covered with a high-order cobalt oxide layer on a conductive core body. CONSTITUTION:A non-sintered type nickel positive electrode 1 is spirally wound with a separator 3, composed of a synthetic-resin-made nonwoven fabric, interposed in a space with a hydrogen occluded alloy negative electrode 2 including hydrogen occluded alloy powders, and is housed in a bottomed cylindrical vessel 4. Also an alkaline electrolyte is put in the vessel 4. The hydrogen occluded alloy negative electrode 2 has structure in which a mixture, having composition in which the hydrogen occluded alloy powders and conductive material powders and a binding agent are blended, is formed on a conductive core body, an electricity collecting body, and has a capacity in a range of 1.0-2.5 times the sum of the capacity of the nickel hydroxide of the positive electrode 1 and an electricity quantity needed for oxidizing cobalt monoxide. This improves a positive electrode 1 utilization factor and betters a charge and discharge characteristic at large current.

8. 发明专利

JPS6445055A PASTE TYPE NICKEL POSITIVE ELECTRODE 失效
公开(公告)号：JPS6445055A
公开(公告)日：1989-02-17
申请号：JP20128487
申请日：1987-08-12
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： ISAWA KOJI , HATA KATSUYUKI , SASAKI KUNIHIKO
IPC分类号： H01M4/32 , H01M4/62
摘要： PURPOSE:To increase the filling density of an active material and the utilization of the active material in discharge by applying a pasty active material having a specified amount of nickel short fibers with a specified length to a conductive core having a two-dimensional structure. CONSTITUTION:Nickel short fibers having a length of 2-20mm is mixed with a pasty active material mainly comprising nickel hydroxide. If the length of the short fiber is less than 2mm, a good conductive matrix is not formed, and if it is longer than 20mm, the distribution of the fibers is scattered. The pasty active material is applied to a conductive core having a two-dimensional structure. The filling density of the active material and the utilization of the active material in discharge are increased, and the coming off of the active material is prevented.

9. 发明专利

JPH03233857A MANUFACTURE OF NON-SINTERED TYPE ELECTRODE 失效
公开(公告)号：JPH03233857A
公开(公告)日：1991-10-17
申请号：JP2595890
申请日：1990-02-07
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HASEBE HIROYUKI , HATA KATSUYUKI , YOSHIDA KAZUHIRO , ISAWA KOJI , SASAKI KUNIHIKO
IPC分类号： H01M4/26 , H01M4/04 , H01M4/32
摘要： PURPOSE:To obtain a non-sintered electrode of excellence in mechanical strength and electrical property at high yield by applying lines of magnetic force to a long conductive substrate with a three-dimensional structure and increasing and decreasing the flux density of magnetic force lines which is permeable corresponding to the metal density of the conductive substrate, as a ferro-magnetic substance. CONSTITUTION:A magnetism generating member 1 and a magnetism detector 3 placed on the opposite side thereof with a conductive substrate 2 between detect the flux density of magnetic force line which are permeated the conductive substrate 2 for output to a computer 4, which computes the metal density of the conductive substrate 2 to measure the metal density. In addition, the computer 4 stores the measured values as well as the position of the conductive substrate 2 as its measurement data, defines the conductive substrate 2 the measured value of which cannot be held in a preset controlled width as a defective point and outputs instruction signals for removing the defective point of a paste active material filled substrate that paste active material is filled in the conductive subtrate 2. It is thus possible to obtain a non-sintered electrode of excellent in mechanical strength and electrical property at a high yield.

10. 发明专利

JPH02227959A MANUFACTURE OF NONSINTERED ELECTRODE FOR ALKALINE STORAGE BATTERY 失效
公开(公告)号：JPH02227959A
公开(公告)日：1990-09-11
申请号：JP4728289
申请日：1989-02-28
申请人： TOSHIBA CORP , TOSHIBA BATTERY
发明人： HASEBE HIROYUKI , YOSHIDA KAZUHIRO , ISAWA KOJI , HATA KATSUYUKI , SASAKI KUNIHIKO
IPC分类号： B23K11/06 , H01M4/26
摘要： PURPOSE:To strongly weld a ribbon-shaped metal strip to a conductive core by using a disk electrode formed by interposing an insulating disk between two disk electrodes as one disk electrode of a pair of welding disk electrodes. CONSTITUTION:A ribbon-shaped metal strip 12 is supplied to a part to be welded of a conductive core 11 filled with a pasty material containing an active material, and they are placed between welding disk electrodes 13a, 13b. One electrode of the disk electrodes 13a, 13b is formed by interposing an insulating disk 14 between two disk electrodes 151, 152. When electricity is passed to the electrodes 13a, 13b from a welding power source 16 while the electrodes 13a, 13b are rotated, current flows from the electrodes 151, 152 insulated with the disk 14 to the lower electrode 13b as shown arrows 171, 172, and the metal strip 12 is welded to the conductive core 11 by Joule heat. The ribbon-shaped metal strip is strongly welded to the conductive core.

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