Claims
- 1. A sealed battery case comprising:
a battery case body comprising a first metal; a cover comprising a hermetically clad sheet comprising a second metal and a third metal, said clad sheet having a hole therethrough; a feedthrough comprising:
a ceramic cylinder; and a conductive pin through said ceramic cylinder and hermetically sealed thereto; wherein
said feedthrough does not have an annular metal collar surrounding said ceramic cylinder; wherein said first metal is hermetically sealed to said second metal; wherein said feedthrough is hermetically sealed to said cover; and wherein said third metal is not directly weldable to said first metal.
- 2. A sealed battery case as in claim 1 wherein said ceramic comprises a glass, and wherein said second metal has a coefficient of thermal expansion (CTE) suitable for compression sealing said conductive pin and said third metal to said glass.
- 3. A sealed battery case as in claim 1 wherein said hole through the clad sheet is a stepped hole.
- 4. A sealed battery case as in claim 1 wherein said clad sheet comprises a configuration chosen from the group consisting of: said second metal having said third metal clad onto both faces thereof and said third metal having said second metal clad onto both faces thereof.
- 5. A sealed battery case as in claim 1 wherein said second metal and said first metal have substantially the same melting point.
- 6. A sealed battery case as in claim 1 wherein said second and third metals have a melting point >800° C.
- 7. A sealed battery case as in claim 1 wherein said first metal is hermetically attached to said second metal with a laser weld.
- 8. A sealed battery case as in claim 1 wherein:
said first and second metals comprise titanium; and said third metal comprises stainless steel.
- 9. A sealed battery case comprising:
a battery case body comprising a first metals comprising titanium; a cover comprising a hermetically clad sheet comprising a second metal comprising titanium and a third metal comprising stainless steel, said clad sheet having a hole therethrough; a feedthrough comprising:
a ceramic cylinder; and a conductive pin through said ceramic cylinder and hermetically sealed thereto; wherein
said first metal is hermetically attached to said second metal; and wherein said feedthrough is hermetically sealed to said third metal of said cover.
- 10. A sealed battery case as in claim 9 wherein said hole through the clad sheet is a stepped hole.
- 11. A sealed battery case as in claim 9 wherein said clad sheet comprises a configuration chosen from the group consisting of: said second metal having said third metal clad onto both faces thereof and said third metal having said second metal clad onto both faces thereof.
- 12. A sealed battery case as in claim 9 wherein said ceramic comprises a glass, and wherein said stainless steel has a coefficient of thermal expansion (CTE) suitable for compression sealing said conductive pin and said stainless steel to said glass.
- 13. A sealed battery case as in claim 9 wherein said first metal is hermetically attached to said second metal with a laser weld.
- 14. A sealed battery case as in claim 9 wherein said feedthrough does not have an annular metal collar surrounding said ceramic cylinder.
- 15. A sealed battery case as in claim 9 wherein said feedthrough further comprises an annular collar surrounding said ceramic cylinder and made from a fourth metal wherein said fourth metal is directly weldable to said third metal of said cover.
- 16. A sealed battery case as in claim 15 wherein said first metal is hermetically attached to said second metal via a first weld and wherein said third metal is hermetically attached to said fourth metal via a second weld, wherein said first weld is a higher temperature weld than said second weld.
- 17. A sealed battery case comprising:
a battery case body comprising a first metal, said battery case body having an upper surface having an outer edge; a cover having an outer, lower edge and comprising a sheet of a second metal hermetically clad with a third metal, said clad sheet having hole therethrough; a feedthrough comprising:
a ceramic cylinder; and a conductive pin through said ceramic cylinder and hermetically sealed thereto; and said first metal is hermetically attached to said second metal such that said outer, lower edge of said cover is substantially flush with said outer edge of the upper surface of the battery case body; wherein
said feedthrough is hermetically sealed to said cover; and wherein said third metal is not directly weldable to said second metal.
- 18. A sealed battery case as in claim 17 wherein said hole through the clad sheet is a stepped hole.
- 19. A sealed battery case as in claim 17 wherein said cover comprises metal cladding onto both faces of said sheet.
- 20. A sealed battery case as in claim 17 wherein said second metal and said first metal have substantially the same melting point
- 21. A sealed battery case as in claim 17 wherein:
said first and second metals comprise titanium; and said third metal comprises stainless steel.
- 22. A sealed battery case as in claim 17 wherein said first metal is hermetically attached to said second metal with a laser weld.
- 23. A sealed battery case as in claim 17 wherein said feedthrough further comprises:
an annular collar comprising a fourth metal, surrounding said ceramic cylinder and hermetically sealed thereto; wherein
said fourth metal of said feedthrough is hermetically joined to said third metal.
- 24. A sealed battery case as in claim 23 wherein said fourth and said third metal have substantially the same melting point.
- 25. A sealed battery case as in claim 23 wherein said fourth metal is hermetically joined to said third metal via a first weld and wherein said first metal is hermetically attached to said second metal via a second weld, wherein said first weld and said second weld are different temperature welds.
- 26. A sealed battery case as in claim 23 wherein:
said first and second metals comprise aluminum; and said third and fourth metals comprise titanium.
- 27. A sealed battery case as in claim 23 wherein:
said first and second metals comprise aluminum; and said third and fourth metals comprise stainless steel.
- 28. A sealed battery case as in claim 23 wherein:
said first and second metals comprise titanium; and said third and fourth metals comprise stainless steel.
- 29. A sealed battery case comprising:
a battery case body comprising a first metal; a cover comprising a sheet of a second metal hermetically clad with a third metal made by the steps of:
bonding said third metal to said second metal using pressure and heat; and preparing a stepped hole through said clad sheet; a feedthrough comprising:
a ceramic cylinder; a pin through said ceramic cylinder; and said pin hermetically sealed to said ceramic cylinder; and said first metal hermetically welded to said second metal; wherein
said third metal is not directly weldable to said first metal; and wherein said feedthrough is hermetically sealed to said cover.
- 30. A sealed battery case as in claim 29 wherein said bonding step comprises:
feeding sheet metal cladding onto at least one face of a strip to form an assembly; and passing the assembly to a hot roll bonding system for cladding.
- 31. The sealed battery case as in claim 33 wherein said feeding step comprises feeding sheet metal cladding onto both faces of said strip.
- 32. A sealed battery case as in claim 29 wherein said first metal is hermetically laser welded to said second metal.
- 33. The sealed battery case as in claim 29 wherein said feedthrough further comprises:
an annular collar comprising a fourth metal, surrounding said ceramic cylinder and hermetically sealed thereto; wherein
said fourth metal of said feedthrough is hermetically joined to said third metal.
- 34. A sealed battery case as in claim 33 wherein:
the first and second metals comprise aluminum; and the third and fourth metals comprise titanium.
- 35. A sealed battery case as in claim 33 wherein:
the first and second metals comprise aluminum; and the third and fourth metals comprise stainless steel.
- 36. A sealed battery case as in claim 33 wherein:
said first and second metals comprise titanium; and said third and fourth metals comprise stainless steel.
- 37. A sealed battery case as in claim 33 wherein:
said first and second metals comprise stainless steel; and said third and fourth metals comprise titanium.
- 38. A sealed battery case an in claim 33 wherein said second metal and said first metal have substantially the same melting point, and wherein said fourth metal and said third metal have substantially the same melting point.
- 39. A sealed battery case as in claim 33 wherein said fourth metal is hermetically welded to said third metal via a high temperature weld and wherein said first metal is hermetically welded to said second metal via a low temperature weld.
- 40. A sealed battery case comprising:
a battery case body comprising a first metal; a cover comprising a sheet of a second metal hermetically clad with a third melting point metal, the clad sheet having a hole therethrough; a feedthrough comprising:
a ceramic cylinder; and a conductive pin through said ceramic cylinder and hermetically sealed thereto; wherein
an annular cylinder comprising a fourth metal, surrounding said ceramic cylinder and hermetically sealed thereto; wherein
said third metal is hermetically joined to said fourth metal of said cover via a first weld; and said first metal is hermetically attached to said second metal via a second weld; wherein said first and second welds are different temperature welds.
- 41. A sealed battery case as in claim 40 wherein:
said first and second metals comprise aluminum; and said third and fourth metals comprise titanium.
- 42. A sealed battery case as in claim 40 wherein:
said first and second metals comprise aluminum; and said third and fourth metals comprise stainless steel.
- 43. A sealed battery case as in claim 40 wherein:
said first and second metals comprise titanium; and said third and fourth metals comprise stainless steel.
- 44. A sealed battery case an in claim 40 wherein said second metal and said first metal have substantially the same melting point, and wherein said fourth metal and said third metal have substantially the same melting point.
- 45. A sealed battery case as in claim 40 wherein said first and second welds are laser welds.
- 46. A battery case cover comprising:
a clad sheet comprising a strip of a first metal hermetically clad with at least one layer of a second metal cladding, said clad sheet having at least one stepped hole therethrough.
- 47. A battery case cover as in claim 46 wherein said second metal has a melting point >800° C.
- 48. A battery case cover as in claim 46 wherein said first metal has a melting point >800° C.
- 49. A battery case cover as in claim 46 wherein said first metal has a melting point <800° C.
- 50. A battery case cover as in claim 46 wherein said clad sheet has a thickness of not more than 3 mm.
- 51. A battery case cover as in claim 46 wherein said layer of first metal has a thickness of 0.5 to 2 mm.
- 52. A battery case cover as in claim 46 wherein said second layer of metal has a thickness of 0.25 to 0.76 mm.
- 53. A battery case cover as in claim 46 wherein said cover comprises a layer of metal cladding on both faces of said strip.
- 54. A battery case cover as in claim 46 wherein:
said first metal comprises aluminum; and said second metal comprises titanium.
- 55. A battery case cover as in claim 46 wherein:
said first metal comprises aluminum; and said second metal comprises stainless steel.
- 56. A battery case cover as in claim 46 wherein:
said first metal comprises titanium; and said second metal comprises stainless steel.
- 57. A battery case cover as in claim 46 wherein:
said first metal comprises stainless steel; and said second metal comprises titanium.
- 58. A battery case cover as in claim 46 wherein:
a portion of said at least one layer of cladding is machined away from an edge of said cover.
- 59. A battery case cover as in claim 58 wherein:
said first metal is exposed in a region where said portion of said cladding is machined away from said edge of said cover.
- 60. A battery case cover as in claim 46 wherein said cover comprises a perimeter bent 90° to a main body of the cover.
- 61. A battery case cover as in claim 46 wherein said clad sheet is made by the step of bonding said at least one layer of high melting point metal to said strip of first metal using pressure and heat.
- 62. A battery case cover as in claim 61 wherein said bonding step comprises:
feeding a layer of sheet metal cladding onto at least one face of said strip to form an assembly; and passing said assembly to a hot roll bonding system for cladding.
- 63. A sealed battery case comprising:
a battery case body comprising a first metal; a cover comprising a sheet of a second metal hermetically clad with a third metal and having at least one hole therethrough; at least one feedthrough comprising:
a ceramic cylinder; a pin through said ceramic cylinder; and said pin hermetically sealed to said ceramic cylinder; and said first metal hermetically welded with a top down weld to said second metal; wherein
said feedthrough is hermetically sealed to said cover; and wherein said third metal is not directly weldable to said first metal.
- 64. A sealed battery case as in claim 63 wherein said bonding step comprises:
feeding sheet metal cladding onto at least one face of a strip to form an assembly; and; passing the assembly to a hot roll bonding system for cladding.
- 65. The sealed battery case as in claim 63 wherein said feeding step comprises feeding sheet metal cladding onto both faces of said strip.
- 66. A sealed battery case as in claim 63 wherein:
the first and second metals comprise aluminum; and the third and fourth metals comprise titanium.
- 67. A sealed battery case as in claim 63 wherein:
the first and second metals comprise aluminum; and the third and fourth metals comprise stainless steel.
- 68. A sealed battery case as in claim 63 wherein:
the first and second metals comprise titanium; and the third and fourth metals comprise stainless steel.
- 69. A sealed battery case an in claim 63 wherein said second metal and said first metal have substantially the same melting point, and wherein said fourth metal and said third metal have substantially the same melting point.
- 70. A sealed battery case as in claim 63 wherein said fourth metal is hermetically welded to said third metal via a first weld and wherein said first metal is hermetically welded to said second metal via a second weld, wherein said first and second welds are different temperature welds.
- 71. A sealed battery case as in claim 63 wherein said first metal is hermetically welded to said second metal via a laser weld.
- 72. A sealed battery case as in claim 63 wherein said first metal is hermetically welded to said second metal via a TIG weld.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Continuation-in-Part of U.S. application Ser. No. 09/421,171 filed on Oct. 19, 1999, which is a Divisional of U.S. application Ser. No. 09/290,012 filed on Apr. 8, 1999, now abandoned.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09290012 |
Apr 1999 |
US |
Child |
09421171 |
Oct 1999 |
US |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
09421171 |
Oct 1999 |
US |
Child |
10256122 |
Sep 2002 |
US |