US4735871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activatable battery including a heat exchanger
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1987-01-02
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Granted: 1988-04-05
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Expires: 2007-01-02
Abstract
Abstract An activatable battery including a heat exchanger, the battery comprising a Volta pile enclosed in an insulating envelope, with each cell of the pile comprising a porous cathode, a separator, a lithium anode, and a metal collector, and the heat exchanger being constituted by a circuit for forced circulation of the electrolyte, said circuit comprising: electrolyte injection manifolds (25) and electrolyte collector manifolds (26), both having openings to the outside of said insulating envelope; means for transferring electrolyte from the injection manifolds to the collector manifolds through each cell, said means including channels (121, 126) formed through at least one electrode of each cell; and a pump (22) for causing the electrolyte to circulate from the injection manifolds to the collector manifolds.
Inventors
- 👤 Jean-Pierre Descroix
- 👤 Yannick Leben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:28
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/70; H01M50/77; H01M6/00; H01M6/14; H01M6/50; H01M6/5038; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
155 words
An activatable battery including a heat exchanger, the batter comprising a Volta pile of a plurality of stacked cells enclosed in an insulating envelope, with each cell of the pile comprising a flat porous cathode electrode, a flat separator, a flat lithium anode electrode, and a flat metal collector, each of said flat elements having a thickness of about several tenths of a millimeter or less and being disposed contiguously one against another, and the heat exchanger being constituted by a circuit for forced circulation of an electrolyte through the pile, said circuit comprising: electrolyte injection manifolds and electrolyte collector manifolds, extending through the stacked cells, both the injection and collection manifolds having openings to the outside of said insulating envelope; and means for transferring electrolyte from the injection manifolds through each cell to the collector manifolds, said means including channels formed as grooves in the body of at least one electrode of each cell.
Claim 2
Dependent Claim
155 words
An activatable battery including a heat exchanger, the batter comprising a Volta pile of a plurality of stacked cells enclosed in an insulating envelope, with each cell of the pile comprising a flat porous cathode electrode, a flat separator, a flat lithium anode electrode, and a flat metal collector, each of said flat elements having a thickness of about several tenths of a millimeter or less and being disposed contiguously one against another, and the heat exchanger being constituted by a circuit for forced circulation of an electrolyte through the pile, said circuit comprising: electrolyte injection manifolds and electrolyte collector manifolds, extending through the stacked cells, both the injection and collection manifolds having openings to the outside of said insulating envelope; and means for transferring electrolyte from the injection manifolds through each cell to the collector manifolds, said means including channels formed as grooves in the body of at least one electrode of each cell.
Claim 3
Dependent Claim
17 words
A battery according to claim 1, wherein said channels are formed in the cathodes of the cells.
Claim 4
Dependent Claim
20 words
A battery according to claim 1, wherein said channels occupy between 5% and 20% of the area of the electrodes.
Claim 5
Dependent Claim
50 words
A battery according to claim 1, wherein said injection manifolds and said collector manifolds are defined by a stacked set of coaxial washers, each of which includes a plurality of orifices, said orifices being aligned in said coaxially stacked washers and said washers being centrally disposed in said stacked cells.
Claim 6
Dependent Claim
56 words
A battery according to claim 4, wherein said means for transferring the electrolyte further comprise grooves provided in each washer in communication with said channels, and a peripheral conduit provided in every other cell and in communication firstly with the channels in itw own cell and secondly via orifices with the channels in an adjacent cell.
Claim 7
Dependent Claim
59 words
A battery according to claim 1, wherein said injection manifolds are defined by a stacked set of coaxial washers centrally disposed in the stacked cells and comprising a plurality of aligned orifices, and wherein said collector manifolds are defined by a stacked set of coaxial washers peripherally disposed around the stacked cells and including a plurality of aligned orifices.
Claim 8
Dependent Claim
27 words
A battery according to claim 6, wherein said centrally disposed washers have grooves for putting the injection orifices into communication with the channels provided in said electrodes.
Claim 9
Dependent Claim
30 words
A battery according to claim 6 or 7, wherein said peripherally disposed washers have connection conduits for putting the collector orifices into communication with the channels provided in said electrodes.
Claim 10
Dependent Claim
62 words
A battery according to claim 1, wherein the channels formed in the at least one electrode of each cell extend radially from a central axis of the pile, and wherein the channels of one cell in the pile are angularly offset relative to the channels formed in the at least one electrode of the cell on either side of said one cell.
Claim 11
Dependent Claim
33 words
A battery according to claim 1, wherein the circuit for forced circulation of an electrolyte through the pile further comprises a pump for circulating electrolyte from the injection manifolds to the collector manifolds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |