Source: https://patents.google.com/patent/US7588858?oq=5527183
Timestamp: 2018-04-26 14:21:16
Document Index: 90386368

Matched Legal Cases: ['arts 310', 'arts 310', 'arts 310', 'arts 310', 'arts 310', 'arts 310', 'arts 310']

US7588858B2 - Battery, method of manufacturing the same, method of manufacturing weldment, and pedestal - Google Patents
Battery, method of manufacturing the same, method of manufacturing weldment, and pedestal Download PDF
US7588858B2
US7588858B2 US11338018 US33801806A US7588858B2 US 7588858 B2 US7588858 B2 US 7588858B2 US 11338018 US11338018 US 11338018 US 33801806 A US33801806 A US 33801806A US 7588858 B2 US7588858 B2 US 7588858B2
US11338018
US20060159987A1 (en )
Furthermore, at least the placing surface 320 a of the pedestal 320 is preferably composed of the metal with 30 μ Ω cm or less of the electric volume resistivity at 100° C. The reasons thereof are that most of the welding current flows through the nickel plate 312 and the aluminum plate 311 of the positive electrode, which are lead or tab objects, in the plane direction under the too high electric volume resistivity of the placing surface 320 a, a higher welding current cannot be produced in the perpendicular direction of the weld parts 310 a of the objects 310 being welded, and the weld parts 310 a cannot fully be heated. And, other reasons are that about 20-70% of the welding current flow in the direction of a plane connecting the two weld parts 310 a of the above aluminum plate 311, the temperature of an aluminum plate 311 becomes higher, the weld parts 310 a of the aluminum plate 311 dissolve too much, and a hole may be formed, under the too high electric volume resistivity of the placing surface 320 a. That is, it is more preferable to lower the heating value of the aluminum plate 311. In this connection, the electric volume resistivity is defined by that at 100° C., because it is thought that the portion near the weld parts 310 a of the placing surface 320 a through which the welding current flows is heated to about 100° C. in the welding.
Moreover, when at least the placing surface 320 a of the pedestal 320 is composed of the metal with the electric volume resistivity of 30 μ Ω cm or less at 100° C., the welding current can flow moderately also through the pedestal 320, the high welding current can be produced through the weld parts 310 a in the perpendicular direction, and the weld parts 310 a can fully be heated locally.
That is, it has been found that the two or more objects 310 being welded made of the different material can firmly be welded by the electric resistance welding, when the pedestal 320 is composed of the refractory metal of which the melting point is higher than those of the objects 310 being welded, and the thermal conductivity at 700° C. is 10 W/mK or more, and the electric volume resistivity at 100° C. is below 30 μ Ω cm.
Especially, according to the method of manufacturing the weldment or the pedestal of one aspect of the invention, the placing surface of the pedestal is composed of the metal with 10 W/mK or more of the thermal conductivity at 700° C., so the objects being welded can be heated moderately and the excessive dissolution can be prevented effectively. Moreover, the placing surface of the pedestal is composed of the metal with 30 μ Ω cm or less of the electric volume resistivity at 100° C., so the welding current can be moderately passed also through the pedestal, and the high welding current can be produced through in the perpendicular direction of the weld part.
Symbol Melting Thermal Conductivity at 100° C.
Thermal Conductivity at 100° C.
2. The method of manufacturing a weldment according to claim 1, wherein the support surface of the pedestal is composed of a metal having thermal conductivity at 700° C. of 10 W/mK or more, or electric volume resistivity at 100° C. of 30 μ Ω cm or less.
a support layer with a support surface thereon, the support layer composed of a metal with a melting point higher than 1455° C.;
11. The pedestal according to claim 10, wherein the support surface is composed of a metal with thermal conductivity at 700° C. of 10 W/mK or more, or electric volume resistivity at 100° C. of 30 μ Ω cm or less.
15. The pedestal according to claim 10, wherein the adherence layer entirely separates the support layer from the heat release layer.
US11338018 2000-11-01 2006-01-24 Battery, method of manufacturing the same, method of manufacturing weldment, and pedestal Expired - Fee Related US7588858B2 (en)
JPP2000-335187 2000-11-01
JPP2000-373559 2000-11-01
US11338018 US7588858B2 (en) 2000-11-01 2006-01-24 Battery, method of manufacturing the same, method of manufacturing weldment, and pedestal
US20060159987A1 true US20060159987A1 (en) 2006-07-20
US7588858B2 true US7588858B2 (en) 2009-09-15
US20110159323A1 (en) * 2009-12-28 2011-06-30 Kim Bong-Young Secondary battery
US20060260120A1 (en) * 2005-01-27 2006-11-23 Exa Energy Technology Co. Ltd. Method of making secondary battery
WO1997010920A1 (en) 1995-09-18 1997-03-27 Honda Giken Kogyo Kabushiki Kaisha Method of lap joining two kinds of metallic members having different melting points
US7727672B2 (en) 2010-06-01 grant
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