US4547442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium battery electrode frame
Assignee: VARTA Batterie AG
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Filing: 1983-07-21
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Granted: 1985-10-15
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Expires: 2003-07-21
Abstract
Abstract Durable mechanical and electronic contact is achieved between the support frame of a battery electrode and its active material A, whose electro-chemical capacity is utilizable to a very high degree, by providing the base material M 1 of the support frame, which is not itself capable of being alloyed with A, with a cover layer of a metal M 2 that is capable of being alloyed with M 1 , as well as being capable of being alloyed with A. This results in an alloy region M 1 .M 2 , within which the alloying reaction with A comes to a halt. The contact region corresponds to the scheme M 1 /M 1 .M 2 .A/A. Alternatively, the active material can itself be an alloy of M 2 and A, in accordance with M 1 /M 1 .M 2 .A/M 2 .A.
Inventors
- 👤 Jurgen O. Besenhard
- 👤 Erich Wudy
- 👤 Heinz P. Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/04; H01M4/0438; H01M4/0459; H01M4/0461; H01M4/36; H01M4/362; H01M4/366; H01M4/64; H01M4/66; H01M4/661; H01M4/70; H01M4/72; H01M4/74; H01M4/745; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0065; H01M4/0471; H01M4/38; H01M4/40; H01M4/405; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
63 words
A support and take-off conductor frame for battery electrodes having a metal or a metal containing active mass, wherein a cover layer M 2 overlies the base material M 1 of the support and take-off conductor frame, said layer M 2 being capable of forming an alloy both with M 1 and with an active material A overlying said layer M 2 .
Claim 2
Dependent Claim
63 words
A support and take-off conductor frame for battery electrodes having a metal or a metal containing active mass, wherein a cover layer M 2 overlies the base material M 1 of the support and take-off conductor frame, said layer M 2 being capable of forming an alloy both with M 1 and with an active material A overlying said layer M 2 .
Claim 3
Dependent Claim
18 words
The frame of claim 1 wherein the active material is itself an alloy of M 2 and A.
Claim 4
Dependent Claim
58 words
The frame of claim 1 wherein the base material M 1 is an alloy M 1 +M 1 '+ . . . M 1 n' , the material M 2 is an alloy M 2 +M 2 '+ . . . M 2 n' and the active material is an alloy A+A' . . . N n' .
Claim 5
Dependent Claim
24 words
The frame of claim 2 wherein M 1 is the element titanium, M 2 is the element aluminum, and A is the element lithium.
Claim 6
Dependent Claim
9 words
A battery electrode comprising the frame of claim 1.
Claim 7
Dependent Claim
42 words
The electrode of claim 5, whose method of manufacture includes the steps of applying the layer of M 2 to the base material M 1 , and subjecting the resulting structure to heat treatment to produce the M 1 M 2 alloy.
Claim 8
Dependent Claim
35 words
The electrode of claim 6, whose method of manufacture includes the further step of applying the material A to the structure so as to alloy A with at least the M 2 of said structure.
Claim 9
Dependent Claim
19 words
The frame of claim 1 wherein the base material M 1 is not alloyable with the active material A.
Claim 10
Dependent Claim
23 words
The frame of claim 1 wherein a transition region separates the alloying surfaces of the layer M 2 and the active material A.
Claim 11
Dependent Claim
35 words
The frame of claim 9 wherein the layer M 2 has a lattice structure incorporating transport-retarding components, for regulating the alloying of the layer M 2 with the active material A in said transition region.
Claim 12
Dependent Claim
33 words
The frame of claim 9 wherein said support and take-off conductor frame includes a non-alloying core, an alloying surface, and a transition region in which said alloying reaction progressively comes to a halt.
Claim 13
Dependent Claim
23 words
The frame of claim 1 wherein said active material A further includes a metal which does not alloy with the active material A.
Claim 14
Dependent Claim
60 words
A support and take-off conductor frame for battery electrodes having a metal or a metal contianing active mass, wherein a cover layer M 2 overlies the base material M 1 of the support and take-off conductor frame, said layer M 2 forming an alloy both with M 1 and with an active material A overlyng said layer M 2 .
Claim 15
Dependent Claim
60 words
A support and take-off conductor frame for battery electrodes having a metal or a metal contianing active mass, wherein a cover layer M 2 overlies the base material M 1 of the support and take-off conductor frame, said layer M 2 forming an alloy both with M 1 and with an active material A overlyng said layer M 2 .
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |