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1. 发明专利

JPH10321201A ALKALINE BATTERY 失效
公开(公告)号：JPH10321201A
公开(公告)日：1998-12-04
申请号：JP13330797
申请日：1997-05-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SUMIYAMA SHINICHI , OKUBO TAKESHI , ASAOKA JUNICHI , KUBO ISAO , IWAKI HIROFUMI
IPC分类号： H01M2/08 , H01M2/12
摘要： PROBLEM TO BE SOLVED: To provide an alkaline battery which has an explosion-proof structure and liquid leakage preventive property by improving cracking resistance in especially gasket parts having circular thin parts for explosion proofness during a standstill at high temperature. SOLUTION: Ribs 13 projected out of the upper face of a joining part 12 of an outer circumferential rim part 10 of a gasket 7 and the center part 11 are formed, in a radial manner a circular thin part 14 is formed in a part where the center part 11 and the ribs 13 are joined, and corner parts where the ribs 13 and the joining part 12 are joined and also the ribs 13 and the circular thin part 14 are joined are formed so as to be in curved structures. By this constitution, the stress strain converged on the corner parts 15 from the ribs 13 which may become starting points of cracking of the circular thin part 14 to the circular thin part 14 can be dispersed and lessened, so that crack formation and growth in the gasket can be prevented.

2. 发明专利

JPH06223840A ZINC ALKALINE BATTERY 失效
公开(公告)号：JPH06223840A
公开(公告)日：1994-08-12
申请号：JP1130893
申请日：1993-01-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUCHIDA SHUJI , KOJIMA ARIMICHI , ASAOKA JUNICHI , MIURA AKIRA
IPC分类号： H01M4/42 , H01M6/06
摘要： PURPOSE:To provide a zinc alkaline battery which generates no pollution and excels in the property of storing and also in the discharging performance. CONSTITUTION:In preparing a negative electrode of a zinc alkaline battery, no mercury, lead, cadmium, or indium is added, and the iron content is below 1ppm, and therein bismuth or a zinc alloy containing an appropriate amount of bismuth and calcium is used as the active material. As organic inhibitor, an appropriate amount of surface active agent is included in the alkaline electrolytic solution, wherein the agent has polyethylene oxide in the hydrophilic part and a fluoride alkyl radical in the lipophilic part, and further an appropriate amount of gallium hydroxide is included, and thereby a zinc alkaline battery which generates no pollution and excels in the property of storing and also the discharging performance is obtained.

3. 发明专利

JPH0877996A BATTERY 失效
公开(公告)号：JPH0877996A
公开(公告)日：1996-03-22
申请号：JP16181595
申请日：1995-06-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOJIMA ARIMICHI , TANAKA HITOSHI , MOTOTANI YUJI , ASAOKA JUNICHI , KUBO ISAO
IPC分类号： H01M2/12 , H01M6/00
摘要： PURPOSE: To prevent the leakage of electrolyte solution to the battery outside through a gas vent hole in a sealing part so as to improve an antileakage properly in a battery provided with a thin part serving as an explosion-proof mechanism in a gasket. CONSTITUTION: Inside a sealing body 5, a water repellent high polymer film 10 which is provided with gas permeability and prevents impregnation of liquid is arranged between a ring washer 8 and a gasket 7, and at least the outer circumference part and the inner circumference part of the water repellent high polymer film 10 are put between the gasket 7 and the ring washer 8 so as to be pressure fitted and sealed. In this way, only the gas inside a battery is discharged, even when gas generated inside the battery increases a battery internal pressure and a safety valve in a thin part serving as an explosion-proof mechanism is operated, so that electrolyte solution is prevented from leaking to the battery outside, and consequently, a battery provided with a high antileakage property can be obtained.

4. 发明专利

JPH087890A ALKALINE BATTERY 失效
公开(公告)号：JPH087890A
公开(公告)日：1996-01-12
申请号：JP14418194
申请日：1994-06-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MOTOTANI YUJI , KOJIMA ARIMICHI , TANAKA HITOSHI , ASAOKA JUNICHI
IPC分类号： H01M4/06 , H01M6/06 , H01M6/22
摘要： PURPOSE:To prevent internal short circuit to enhance reliability by limiting the amount of sodium or a sodium ion calculated in terms of sodium in a gelled negative electrode to a specified concentration. CONSTITUTION:The concentration of sodium or a sodium ion contained in a gelling agent and an alkaline electrolyte is limited to a specified value based on the amount of zinc which is a negative active material of a battery. Rising in conductivity of dendritic zinc oxide crystals deposited in discharge is retarded, and discharge performance is improved. The amount of sodium or a sodium ion calculated in terms of sodium in a gelled negative electrode 4 is limited to 0.25wt.% or less based on the weight of the zinc active material. Manganese dioxide is used as the main component of a positive active material 2, potassium hydroxide is used as the main component of the alkaline electrolyte, and nonamalgamated zinc is used as the main component of the negative active material, and the alkaline electrolyte is formed in gel by using sodium polyacrylate as the gelling agent.

5. 发明专利

JPH087867A ALKALINE BATTERY 失效
公开(公告)号：JPH087867A
公开(公告)日：1996-01-12
申请号：JP14418094
申请日：1994-06-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TANAKA HITOSHI , KOJIMA ARIMICHI , MOTOTANI YUJI , ASAOKA JUNICHI
IPC分类号： H01M2/04 , H01M2/08 , H01M2/12
摘要： PURPOSE:To restrain excess gas from being linearly emitted, and thereby narrow a range of splashing by forming a cut-out section through which gas within a battery is emitted while being communicated with a explosion proof mechanism, in a terminal plate sealing a metallic case including a power generating element. CONSTITUTION:A metallic case loaded with a power generating element is sealed with a resin sealing body 5, and a negative electrode current collector 10 is integrally fitted in its thick wall section 13. The thin wall section 6 of the sealing body 5 is opened because of an increase in inner pressure due to gas produced, and the gas containing electrolyte is emitted to the outside of a battery out of a cut-out section 11 provided for a negative electrode terminal plate 9 through the through hole 8 of a washer 7. Since the cut-out section 11 is in a linear shape, emitted gas is once in contact with the inner surface of the terminal plate 9 so as to let electrolyte be removed, and it is not linearly splashed over in a wide range. In this case, it is preferable that the cut-out section is non-linear in shape, a slice 12 in an oval shape, a triangle shape and the like are formed, and the most part of electrolyte is removed by its rocking motion. Beside, it is more effective that the slice 12 is inclined toward the inside of the terminal plate 9.

6. 发明专利

JPH07240202A ALKALINE BATTERY 失效
公开(公告)号：JPH07240202A
公开(公告)日：1995-09-12
申请号：JP2956894
申请日：1994-02-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TANAKA HITOSHI , KOJIMA ARIMICHI , MOTOTANI YUJI , ASAOKA JUNICHI
IPC分类号： H01M4/42 , H01M4/06 , H01M6/06
摘要： PURPOSE:To provide an alkaline battery with excellent liquid leakage resistance even in the case where nonamalgamated zinc alloy is used for a negative electrode active material by using bismuth oxide or bismuth chloride as an anticorrosive for the zinc alloy. CONSTITUTION:Bismuth oxide or bismuth chloride is contained in a gel negative electrode 2 by 0.01-0.5wt.% to a zinc alloy powder. Wherein the negative electrode is produced by mixing a negative electrode active material and a gelling alkaline electrolytic liquid. Further a zinc alloy containing bismuth 0.01-0.2wt.% to zinc or bismuth 0.01-0.2wt.% together with calcium 0.0025-0.05wt.% to zinc is used as a negative electrode active material.

7. 发明专利

JPH0765818A ALKALINE BATTERY 失效
公开(公告)号：JPH0765818A
公开(公告)日：1995-03-10
申请号：JP20755693
申请日：1993-08-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MOTOTANI YUJI , KOJIMA ARIMICHI , TSUCHIDA SHUJI , ASAOKA JUNICHI
IPC分类号： H01M4/06 , H01M4/62 , H01M6/22
摘要： PURPOSE:To provide an alkaline battery which is durable to strong vibration and impact applied for a long period during discharge by using two sorts of gelatinizer. CONSTITUTION:A gel negative electrode comprises gel electrode comprising alkaline electrolyte and gelatinizer, and zinc powder dispersed in it. As the gelatinizer, crosslinked polyacrylic acid salt type water absorption polymer including carboxylic acid base of which 0.5vt% water solution-dispersed viscosity at 25 deg.C is 15000cps or more, and of which grain size is 100-900mu chiefly, and crosslinked and branched polyacrylic acid including carboxylic acid or crosslinked and branched polyacryllic acid salt including carboxylic acid base of which water solution-dispersed viscosity is similar to above, and of which grain size is 100mu or less are used together.

8. 发明专利

JPH04138667A MANUFACTURE OF ZINC ALKALINE BATTERY 失效
公开(公告)号：JPH04138667A
公开(公告)日：1992-05-13
申请号：JP26097590
申请日：1990-09-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MOTOTANI YUJI , MIURA AKIRA , SAEKI TOSHINA , ASAOKA JUNICHI
IPC分类号： H01M4/42 , H01M4/12 , H01M4/62
摘要： PURPOSE:To enhance leaktightness of a zinc alkaline battery by composing a gelled negative electrode of anticorrosive zinc alloy powder having specific elements combined together and a gelled alkaline electrolyte containing a predetermined amount of indium hydroxide powder to which a specific surfactant is added in a predetermined amount. CONSTITUTION:A zinc alloy having indium as its essential alloy component in which tin and bismuth are singly or combinedly contained, or anticorrosive zinc alloy powder having indium as its essential component in which tin and bismuth are singly or combinedly contained and in which also calcium and aluminium are singly or combinedly contained is fabricated. Powder of indium hydroxide is contained in the zinc alloy in the range 0.005 to 0.5wt.% of the alloy and a gelled alkaline electrolyte in which a polyethylene alkyl phenyl ether phosphoric surfactant expressed by the structural formula 1 or 2 is contained in the range 0.001 to 0.1wt.% of the zinc alloy is prepared. The zinc alloy powder is added to and mixed with the electrolyte.

9. 发明专利

JPS62128441A ALKALINE BATTERY 失效
公开(公告)号：JPS62128441A
公开(公告)日：1987-06-10
申请号：JP26788885
申请日：1985-11-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MATSUHISA ICHIRO , ASAOKA JUNICHI , KAJIKAWA YOJI , HIROSHIMA TOSHIHISA , MOTOTANI YUJI , MIYOSHI JUN
IPC分类号： H01M4/06 , H01M4/12 , H01M4/62 , H01M6/22
摘要： PURPOSE:To contrive to reduce the deterioration rate of battery performance taking place during preservation at a normal temperature for a long term and preservation at a high temperature, by providing a gel-formed negative pole which is produced by dispersing negative pole active material through gel-formed electroyte consisting of alkaline electrolytic liquid and gelatinizer and employing crosslinking branched type sodium polyacrylate and carbamidine-gum in parallel as the gelatinizer. CONSTITUTION:Branched type sodium polyacrylate and carbamidine-gum are used in parallel as a gelatinizer for gel-formed negative pole of an alkaline battery and the concentration of gel-form electrolyte is set in a range from 0.5-4.0wt% for the branched type sodium polyacrylate and in a range from 0.25-3.0wt% for carbamidine-gum. Namely, positive pole black mix 2 consisting of manganese dioxide and graphite is molded in a cylindrical shape in advance to be placed in a positive pole case 1 and a cup-shaped separator 3 is inserted in the center thereof. Then, the gel-formed negative pole 4 is poured in the cup-shaped separator 3. Thereafter, a negative pole collector 6 accompanied by a gasket 5 is inserted in the center part of the gel-formed negative pole 4 to form an elementary cell. Thus, the deterioration rate of battery performance taking place during preservation at a normal temperature for a long term and preservation at a high temperature can be reduced and such performance of a battery as being stabilized against drop and vibration can be secured.

10. 发明专利

JPH10275637A REMAINDER INDICATING METHOD FOR BATTERY, AND DRY BATTERY WITH REMAINDER INDICATING FUNCTION 失效
公开(公告)号：JPH10275637A
公开(公告)日：1998-10-13
申请号：JP7702197
申请日：1997-03-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOKOZEKI TSUGUNORI , NITTA YOSHIAKI , ASAOKA JUNICHI , OONAKAHARA SHIGEHISA
IPC分类号： G01R31/36 , H01M6/50 , H01M10/48
摘要： PROBLEM TO BE SOLVED: To provide a remainder indicating method for a battery and a dry battery with remainder indicating function capable of restricting the energy consumption of the battery to perform accurate remainder indication for the battery without generating heat in the battery. SOLUTION: A method to connect a light emitting diode 6 with fluorescent substance mixed in a resin molding to a positive pole 2 and a negative pole 1 is used for a dry battery. In this way, a remainder indicating method for the battery and the dry battery with remainder indicating function are provided capable of restricting the energy consumption of the battery to perform accurate remainder indiction without generating heat in the battery so that the remainder of the dry battery can be visibly found from a difference in light emission amount.

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