WO2002003483A1 - Battery case feedthrough - Google Patents
Battery case feedthrough Download PDFInfo
- Publication number
- WO2002003483A1 WO2002003483A1 PCT/US2001/020598 US0120598W WO0203483A1 WO 2002003483 A1 WO2002003483 A1 WO 2002003483A1 US 0120598 W US0120598 W US 0120598W WO 0203483 A1 WO0203483 A1 WO 0203483A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- feedthrough
- metal
- case
- aluminum
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/197—Sealing members characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- This invention relates to a battery case feedthrough and more particularly to a method and apparatus for providing a hermetically sealed electrical feedthrough for use with a metal battery case of low melt point material.
- Battery cases typically require a conductive pin which feeds into the case through a dielectric material which insulates the pin from the conductive case wall. It is generally critical that the feedthrough be hermetically sealed. Techniques are known for forming a hermetic seal between a metal pin of high melt point material and a ceramic cylinder surrounding the pin. Moreover, an annular metal collar of high melt point material can be hermetically sealed around the ceramic cylinder.
- the present invention is directed to an improved case/feedthrough construction enabling the use of a low melt point case material, e.g., aluminum, in conjunction with a ceramic-metal feedthrough subassembly which requires the application of a high temperature to form a hermetic seal.
- a low melt point case material e.g., aluminum
- a case cover comprised of a layer of high melt point material and a layer of low melt point material is used to respectively seal to a high melt point collar on the feedthrough subassembly and a low melt point case.
- a case cover is formed of clad metal comprised of a layer of high melt point material, e.g., stainless steel or titanium, and a layer of low melt point material, e.g., aluminum.
- a feedthrough hole is formed through the cover.
- the feedthrough subassembly annular collar is aligned with the hole and hermetically sealed to the clad metal high melt point layer using a high temperature welding process.
- the clad metal low melt point layer e.g., aluminum, can be laser welded to the aluminum case at a lower temperature to form a hermetic seal.
- FIGURE 1 is an exploded sectional view of a feedthrough subassembly, a battery case, and a case cover in accordance with the invention formed of clad metal;
- Figure 2 is a sectional view similar to Figure 1 but showing the feedthrough subassembly, case, and case cover assembled together.
- Figure 1 depicts a feedthrough subassembly 10 comprised of a feedthrough metal pin 1 penetrating a cylindrical ceramic glass core 2.
- a hermetic seal can be formed between the ceramic and metal by proper application of processes and materials.
- Ceramic to stainless and ceramic to titanium are particular examples of materials that can be bonded to form hermetic seals.
- Braze bonding for example, aluminum oxide and zirconium oxide ceramic to metals, including titanium, stainless steel, molybdenum, tantalum, and cobalt-chromium alloys, can be done using a braze, comprising 30% nickel and 70% titanium (U.S.
- braze bond includes the preferred method for joining zirconium oxide containing 3% yttrium to preferably a metal alloy, namely titanium and niobium (55% Ti and 45% Nb), using the nickel-titanium braze (50% Ni and 50% Ti) (U.S. Provisional Patent Application,
- a pin 1 of stainless steel or titanium or one of the other aforementioned metals and a ceramic core 2 of aluminum oxide or zirconium oxide the pin 1 and core 2 can be hermetically bonded utilizing a high temperature brazing or baking process.
- an annular collar 3 of stainless steel or titanium or one of the other aforementioned metals can be hermetically sealed around the core 2.
- a clad metal case cover 20 is provided to mount the feedthrough subassembly 10 relative to a case 30 formed of a light weight low cost metal, e.g., aluminum.
- the case cover 30 is formed of a first layer 4 of a high melt point material, e.g., stainless steel or titanium and a second layer 5 of a low melt point material, e.g., aluminum.
- a high melt point material e.g., stainless steel or titanium
- a second layer 5 of a low melt point material e.g., aluminum.
- clad metal such as a plate of stainless steel clad with aluminum.
- sheet metal cladding is fed onto one or both faces of the hot solidified continuously cast strip being withdrawn from the casting means and the assembly is then passed to a hot roll bonding system for cladding.
- Another method U.S. Patent No.
- a clad metal by forming a layer of the dissimilar metal powder on the surface of a base metal by cold fixing the powder to the surface under pressure, denting only the surface and a subsurface area of the layer of the dissimilar metal powder by melting and immediately solidifying in a vacuum, compressing the layer of the dissimilar metal powder together with the base metal at a temperature not higher than the solidus-line temperature of the two dissimilar metals under a pressure of not lower than kgf/cm 2 using a hot isostatic press, and hot working the layer of the dissimilar metal power together with the base metal.
- the case cover 20 defines a feedthrough mounting hole 6 of smaller diameter through layer 4 and larger diameter through layer 5.
- the feedthrough subassembly 10 is aligned with the hole 6 to place the annular collar 3 contiguous with the upper surface of case cover layer 4.
- these contiguous materials are both formed of high melt point materials, e.g., stainless steel to titanium, they can be welded together using a high temperature process to form a hermetic seal.
- This high temperature is in excess of the melting point of the low melt point case material, e.g., aluminum.
- the case cover lower layer 5 of aluminum can then be welded to the aluminum case 7 using a lower temperature to form a hermetic seal.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A method and apparatus for providing a hermetically sealed electrical feedthrough for use with a metal battery case The apparatus includes a ceramic-metal feedthrough subassembly, a metal case o flow melt point material, and a clad metal case cover comprised of a first layer of high melt point material and a second layer of low melt point material. The first layer is hermetically sealed to the case and the second layer is hermetically sealed to a collar on the feedthrough subassembly.
Description
TITLE: BATTERY CASE FEEDTHROUGH
INVENTOR: HISASHI TSUKAMOTO
FIELD OF THE INVENTION This invention relates to a battery case feedthrough and more particularly to a method and apparatus for providing a hermetically sealed electrical feedthrough for use with a metal battery case of low melt point material.
BACKGROUND OF THE INVENTION Battery cases typically require a conductive pin which feeds into the case through a dielectric material which insulates the pin from the conductive case wall. It is generally critical that the feedthrough be hermetically sealed. Techniques are known for forming a hermetic seal between a metal pin of high melt point material and a ceramic cylinder surrounding the pin. Moreover, an annular metal collar of high melt point material can be hermetically sealed around the ceramic cylinder.
It is often desirable to be able to form a battery case of light weight low cost material, such as aluminum. Unfortunately, aluminum melts at a temperature lower than the temperatures normally required to fabricate and install the aforedescribed ceramic-metal feedthrough structure in the case. For example, the fabrication of the aforedescribed structure typically requires the application of a temperature of about 800° C or more to form a hermetic seal between two high melt point metals and/or between a high melt point metal and a ceramic cylinder. Such an elevated temperature could destroy a case formed of aluminum which melts just above 600° C.
SUMMARY OF THE INVENTION The present invention is directed to an improved case/feedthrough construction enabling the use of a low melt point case material, e.g., aluminum, in conjunction with a ceramic-metal feedthrough subassembly which requires the application of a high temperature to form a hermetic seal.
In accordance with the invention, a case cover comprised of a layer of high melt point material and a layer of low melt point material is used to respectively seal to a high melt point collar on the feedthrough subassembly and a low melt point case. More particularly, in accordance with a preferred embodiment, a case cover is formed of clad metal comprised of a layer of high melt point material, e.g., stainless steel or titanium, and a layer of low melt point material, e.g., aluminum. A feedthrough hole is formed through the cover. The feedthrough subassembly annular collar is aligned with the hole and hermetically sealed to the clad metal high melt point layer using a high temperature welding process. The clad metal low melt point layer, e.g., aluminum, can be laser welded to the aluminum case at a lower temperature to form a hermetic seal.
BRIEF DESCRIPTION OF THE FIGURES Figure 1 is an exploded sectional view of a feedthrough subassembly, a battery case, and a case cover in accordance with the invention formed of clad metal; and
Figure 2 is a sectional view similar to Figure 1 but showing the feedthrough subassembly, case, and case cover assembled together.
DETAILED DESCRIPTION The following text describes the preferred mode presently contemplated for carrying out the invention and is not intended to describe all possible modifications and variations consistent with the spirit and purpose of the
invention. The scope of the invention should be determined with reference to the claims.
Figure 1 depicts a feedthrough subassembly 10 comprised of a feedthrough metal pin 1 penetrating a cylindrical ceramic glass core 2. A hermetic seal can be formed between the ceramic and metal by proper application of processes and materials.
Ceramic to stainless and ceramic to titanium are particular examples of materials that can be bonded to form hermetic seals. Braze bonding, for example, aluminum oxide and zirconium oxide ceramic to metals, including titanium, stainless steel, molybdenum, tantalum, and cobalt-chromium alloys, can be done using a braze, comprising 30% nickel and 70% titanium (U.S.
Provisional Patent Application, Serial No. ; U.S. Patent Application,
Serial No. ). Another example of a braze bond includes the preferred method for joining zirconium oxide containing 3% yttrium to preferably a metal alloy, namely titanium and niobium (55% Ti and 45% Nb), using the nickel-titanium braze (50% Ni and 50% Ti) (U.S. Provisional Patent Application,
Serial No. ; U.S. Patent Application, Serial
No. ).
Thus, by selecting a pin 1 of stainless steel or titanium or one of the other aforementioned metals and a ceramic core 2 of aluminum oxide or zirconium oxide, the pin 1 and core 2 can be hermetically bonded utilizing a high temperature brazing or baking process. Similarly, an annular collar 3 of stainless steel or titanium or one of the other aforementioned metals can be hermetically sealed around the core 2. In accordance with the invention, a clad metal case cover 20 is provided to mount the feedthrough subassembly 10 relative to a case 30 formed of a light weight low cost metal, e.g., aluminum. The case cover 30 is formed of a first layer 4 of a high melt point material, e.g., stainless steel or titanium and a second layer 5 of a low melt point material, e.g., aluminum. There are different methods for forming clad metal, such as a plate of stainless steel clad with aluminum. In one method (U.S. Patent No. 4213558,
Hirobe, et al.), sheet metal cladding is fed onto one or both faces of the hot solidified continuously cast strip being withdrawn from the casting means and the assembly is then passed to a hot roll bonding system for cladding. Another method (U.S. Patent No. 4966748, Miyasaka et al.) produces a clad metal by forming a layer of the dissimilar metal powder on the surface of a base metal by cold fixing the powder to the surface under pressure, denting only the surface and a subsurface area of the layer of the dissimilar metal powder by melting and immediately solidifying in a vacuum, compressing the layer of the dissimilar metal powder together with the base metal at a temperature not higher than the solidus-line temperature of the two dissimilar metals under a pressure of not lower than kgf/cm2 using a hot isostatic press, and hot working the layer of the dissimilar metal power together with the base metal.
The case cover 20 defines a feedthrough mounting hole 6 of smaller diameter through layer 4 and larger diameter through layer 5. The feedthrough subassembly 10 is aligned with the hole 6 to place the annular collar 3 contiguous with the upper surface of case cover layer 4. Inasmuch as these contiguous materials are both formed of high melt point materials, e.g., stainless steel to titanium, they can be welded together using a high temperature process to form a hermetic seal. This high temperature is in excess of the melting point of the low melt point case material, e.g., aluminum. The case cover lower layer 5 of aluminum can then be welded to the aluminum case 7 using a lower temperature to form a hermetic seal.
If the clad metal were not used, the high temperature required to hermetically bond the feedthrough pin subassembly to the case would require use of a high melt point case cover. However, in trying to bond the high melt point cover to the aluminum case, the welding, or brazing, temperature would melt the aluminum. Exemplary melting point temperatures of the various metals are aluminum 660.37° C, stainless steel-303, 1427°C, and titanium 1660 +/- 10° C. In Figure 2, Low temperature hermetic welds are shown at (11 ) and (12). High temperature welds are shown at (13) and (14).
While the invention herein disclosed has been described by means of specific embodiments and applications thereof, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope of the invention set forth in the claims.
Claims
1. In combination: a case formed of a metal material having a first melting point; a feedthrough structure including a core of ceramic material, a metal pin extending through said core and hermetically sealed thereto, and an annular metal collar surrounding said core and hermetically sealed thereto, said collar comprising a material having a second melting point greater than said first melting point. a case cover comprising first and second clad metal layers, said first layer comprising a material having a melting point similar to that of said case material and said second layer comprising a material having a melting point similar to that of said collar material; said case collar defining a hole extending therethrough; means hermetically sealing said collar to said case cover second layer around said hole; and means hermetically sealing said case cover first layer to said case.
2. The combination of claim 1 wherein said annular collar material is selected from a group consisting of stainless steel and titanium.
3. The combination of claim 1 wherein said ceramic material is selected from a group consisting of aluminum oxide and zirconium oxide.
4. The combination of claim 1 wherein said case material comprises aluminum.
5. The combination of claim 1 wherein said case cover first layer material comprises aluminum and said second layer material is selected from a group consisting of stainless steel and titanium.
6. The combination of claim 1 wherein said means hermetically sealing said collar to said case cover second layer comprises a high temperature weld; and
Said means hermetically sealing said case cover first layer to said case comprises a low temperature weld.
7. A battery feedthrough comprising a center conducting pin made from a metal selected from the group consisting of stainless steel and titanium; and electrical insulator made from a ceramic selected from the group consisting of aluminum oxide and zirconium oxide; said pin and said ceramic surrounded by a hollow cylinder of a metal selected from the group consisting of stainless steel and titanium, wherein said pin, said ceramic, and said surrounding metal hollow cylinder form a feedthrough-pin assembly; saidfeedthrough-pin assembly fitted through a hole in a clad metal cover slightly larger than the feedthrough- pin assembly; said clad metal being aluminum on the side facing toward a cylindrical aluminum battery casing; said upper clad surface being the same metal selected from the outer metal cylinder of the feedthrough-pin assembly.
8. The battery feedthrough as in claim 7 wherein the lower aluminum part of the clad cover does not meet the feedthrough-pin assembly.
9. The battery feedthrough as in claim 8 wherein the upper clad surface, which is a metal selected from the group consisting of stainless steel and titanium, is welded to the outer cylinder of the feedthrough-pin assembly.
10. The battery feedthrough as in claim 9 wherein the upper stainless steel to titanium part of the clad cover-to-outer cylinder of feedthrough-pin assembly weld is hermetic.
11. The battery feedthrough as in claim 10 wherein the lower aluminum part of the clad cover is welded to the aluminum battery casing.
12. The battery feedthrough as in claim 11 wherein the lower aluminum part of the clad cover is welded to the aluminum battery casing.
13. The battery feedthrough as in claim 12 wherein the lower aluminum part of the clad cover-aluminum battery casing weld is hermetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001270232A AU2001270232A1 (en) | 2000-06-29 | 2001-06-28 | Battery case feedthrough |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60693200A | 2000-06-29 | 2000-06-29 | |
| US09/606,932 | 2000-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2002003483A1 true WO2002003483A1 (en) | 2002-01-10 |
| WO2002003483A8 WO2002003483A8 (en) | 2002-02-28 |
Family
ID=24430119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2001/020598 Ceased WO2002003483A1 (en) | 2000-06-29 | 2001-06-28 | Battery case feedthrough |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2001270232A1 (en) |
| WO (1) | WO2002003483A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6716554B2 (en) | 1999-04-08 | 2004-04-06 | Quallion Llc | Battery case, cover, and feedthrough |
| EP1453123A1 (en) * | 2002-12-27 | 2004-09-01 | Samsung SDI Co., Ltd. | Secondary battery and manufacturing method thereof |
| US7108166B2 (en) | 1999-04-08 | 2006-09-19 | Quallion Llc | Method for sealing a battery case |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4352714A (en) * | 1980-09-29 | 1982-10-05 | Union Carbide Corporation | Method for making a metal-to-ceramic insulator seal for electrochemical cells |
| US4372038A (en) * | 1981-07-23 | 1983-02-08 | Gte Products Corporation | Method for assembling an electrochemical cell |
| US5397661A (en) * | 1994-01-12 | 1995-03-14 | The University Of Chicago | Battery cell feedthrough apparatus |
| US5500026A (en) * | 1993-04-27 | 1996-03-19 | Heller; Bernard F. | Method of assembling electrochemical cells of novel construction |
| US5535097A (en) * | 1993-11-23 | 1996-07-09 | Medtronic, Inc. | Implantable medical device including a first enclosure portion having a feedthrough in a second interior surface |
| US5811206A (en) * | 1997-10-31 | 1998-09-22 | Medtronic, Inc. | Feedthrough pin insulator, assembly and method for electrochemical cell |
-
2001
- 2001-06-28 WO PCT/US2001/020598 patent/WO2002003483A1/en not_active Ceased
- 2001-06-28 AU AU2001270232A patent/AU2001270232A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4352714A (en) * | 1980-09-29 | 1982-10-05 | Union Carbide Corporation | Method for making a metal-to-ceramic insulator seal for electrochemical cells |
| US4372038A (en) * | 1981-07-23 | 1983-02-08 | Gte Products Corporation | Method for assembling an electrochemical cell |
| US5500026A (en) * | 1993-04-27 | 1996-03-19 | Heller; Bernard F. | Method of assembling electrochemical cells of novel construction |
| US5535097A (en) * | 1993-11-23 | 1996-07-09 | Medtronic, Inc. | Implantable medical device including a first enclosure portion having a feedthrough in a second interior surface |
| US5397661A (en) * | 1994-01-12 | 1995-03-14 | The University Of Chicago | Battery cell feedthrough apparatus |
| US5811206A (en) * | 1997-10-31 | 1998-09-22 | Medtronic, Inc. | Feedthrough pin insulator, assembly and method for electrochemical cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6716554B2 (en) | 1999-04-08 | 2004-04-06 | Quallion Llc | Battery case, cover, and feedthrough |
| US7108166B2 (en) | 1999-04-08 | 2006-09-19 | Quallion Llc | Method for sealing a battery case |
| EP1453123A1 (en) * | 2002-12-27 | 2004-09-01 | Samsung SDI Co., Ltd. | Secondary battery and manufacturing method thereof |
| US8334066B2 (en) | 2002-12-27 | 2012-12-18 | Samsung Sdi Co., Ltd. | Secondary battery and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001270232A1 (en) | 2002-01-14 |
| WO2002003483A8 (en) | 2002-02-28 |
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