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1.发明授权
公开(公告)号：EP0859416B1
公开(公告)日：2005-04-27
申请号：EP96935470.3
申请日：1996-10-28
CPC分类号： H01M2/345 , H01M2/1235 , H01M2/1241 , H01M2/34
摘要： An explosion-proof seal plate for an enclosed cell and a production method thereof, whereby current is cut off when the internal pressure of the cell rises, and also the rise of the resistance due to permeation of an electrolyte is limited. Therefore, it is possible to prevent the cell from exploding in the event of the abnormal generation of gas caused by chemical reactions due to overcharge or an erroneous operation and thus protect the device powered by the cell. A thin portion (7a) having a breaking strength of 18 to 24 kg/cm2 is disposed at the center of an upper metallic foil (7) made of aluminum, a thin portion (8a) having a breaking strength of 10 to 13 kg/cm2 is disposed at the center of a lower metallic foil (8) made likewise of aluminum, the diameter (A) of the thin portion (7a) of the upper metallic foil (7) and the diameter (B) of the thin portion (8a) of the lower metallic foil (8) are so set as to satisfy the relation A≥B, these two metallic foils are welded at their center through an insulating gasket (3) and are fitted into a metallic case (4) made of aluminum and having four vent holes, a temperature resistor (5) and a metallic cap (6) having four vent holes (6) are put on the case (4), and the peripheral portion of the metallic case (4) is sealed to obtain a seal plate. In this way, the cell can be reliably exhausted if an excessive amount of gas is generated under the abnormal state of the enclosed cell, and the accidents of the cell such as ignition, explosion, etc., can be prevented.
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公开(公告)号：EP0810677A1
公开(公告)日：1997-12-03
申请号：EP96941834.2
申请日：1996-12-11
发明人： KOZUKI, Kiyomi , NISHIMURA, Yoshiko , IIDA, Rikio , FUJII, Takabumi , SAITO, Kazuo , KUNOIKE, Naoto, 4-3-6-101, Kirehigashi , TAKAI, Tohru , MASUMOTO, Kenjin , NIWA, Yukimasa
IPC分类号： H01M2/12
CPC分类号： H01M2/345 , H01M2/1235 , H01M2/34 , H01M2/348 , H01M6/10
摘要： To enhance the safety of battery, in a thin type battery, by securely cutting off electric connection when the internal pressure of the battery is raised.
An upper valve disc and a lower valve disc are disposed through an electric insulating gasket, a part of the upper valve disc is formed in a recess shape, and a tiny hole and a continuous thin wall part are formed in a part of the lower valve disc, and the bottom of the recess part of the upper valve disc and the portion enclosed by the tiny hole and thin wall part of the lower valve disc are fused, and the structure is constituted so that the strength of the lower valve disc may be greater than the strength of the upper valve disc.-
公开(公告)号：EP0810677B1
公开(公告)日：2000-03-15
申请号：EP96941834.2
申请日：1996-12-11
发明人： KOZUKI, Kiyomi , NISHIMURA, Yoshiko , IIDA, Rikio , FUJII, Takabumi , SAITO, Kazuo , KUNOIKE, Naoto , TAKAI, Tohru , MASUMOTO, Kenjin , NIWA, Yukimasa
CPC分类号： H01M2/345 , H01M2/1235 , H01M2/34 , H01M2/348 , H01M6/10
摘要： A thin battery in which safety is assured by cutting off the electrical connection when the internal pressure of the battery rises. An upper valve and lower valve are arranged with an electrically insulating gasket in between. Part of the upper valve is recessed and, at the same time, a small hole and a thin-wall section connected to the small hole are provided in part of the lower valve. The strength of the lower valve is made higher than that of the upper valve by welding the part of the lower value surrounded by the small hole and the thin-wall section to the bottom face of the recessed section of the upper valve.
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4.发明公开
公开(公告)号：EP0859416A1
公开(公告)日：1998-08-19
申请号：EP96935470.3
申请日：1996-10-28
IPC分类号： H01M2/12
CPC分类号： H01M2/345 , H01M2/1235 , H01M2/1241 , H01M2/34
摘要： The present invention relates to an explosion-proof seal plate for a sealed cell and a production method thereof and aims at providing an explosion-proof seal plate and production method thereof, wherein problems of a risk of explosion of a cell due to an excessive pressure inside the cell caused by abnormal generation of a gas through a chemical reaction accompanying over charge or erroneous use of the cell or damaging of electronic equipment using the cell as the power source are solved, ignition and other accidents can be prevented with a high accuracy by reliably cutting off an electric current when the cell internal pressure increases, and the increase in the resistance due to permeation of an electrolyte can be limited.
In order to accomplish this aim, the present invention provides a thin portion 7a having a breaking strength of 18-24 kg/cm 2 in the central portion of an upper metallic foil 7 made of aluminum and a thin portion 8a having a breaking strength of 10-13 kg/cm 2 in the central portion of a lower metallic foil 8 made of aluminum, wherein the diameter A of the thin portion 7a of the upper metallic foil and the diameter B of the thin portion 8a of the lower metallic foil 8 satisfy the relation A≧B. The two metallic foils are welded at the central portions with an insulating gasket interposed, and encased in a metallic case 4 made of aluminum having 4 vent holes, on top of which a temperature dependent resistor 5 and a metallic cap 6 having 4 vent holes are then placed. A seal plate is obtained by sealing the periphery of the metallic case 4, with which it is possible to prevent accidents such as ignition and explosion of a cell by reliably allowing internal gas to exhaust in the event of generation of a large volume of gas under an abnormal condition of a sealed cell.摘要翻译： 密封电池用防爆密封板及其制造方法技术领域本发明涉及密封电池用防爆密封板及其制造方法，其目的在于提供防爆密封板及其制造方法，其特征在于，由于过大的压力而导致电池爆炸的危险性 通过伴随过充电或错误使用电池的化学反应或使用电池作为动力源的电子设备的破坏而导致气体异常产生的电池内部，可以高精度地防止点火等事故 当电池内部压力增加时可靠地切断电流，并且可以限制由于电解质渗透引起的电阻的增加。 为了达到上述目的，本发明提供一种在由铝构成的上金属箔7的中央部分断裂强度为18-24kg / cm 2的薄壁部分7a和具有断裂的薄壁部分8a 在由铝制成的下金属箔8的中心部分的强度为10-13kg / cm 2，其中上金属箔的薄部分7a的直径A和薄金属箔的直径B 下金属箔8满足关系A> / = B。 两个金属箔在中心部分被绝缘垫片焊接在一起，并被包装在由具有4个通气孔的铝制成的金属壳体4中，其上具有温度依赖电阻器5和具有4个通气孔的金属盖6 然后放置。 通过密封金属壳体4的周边来获得密封板，通过在发生大量气体的情况下可靠地允许内部气体排出，可以防止电池点火和爆炸等事故 密封电池的异常状况。
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