US3870566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery having venting passageway outside of or in gas-pervious layers
Assignee: ESB Inc
•
Filing: 1973-12-03
•
Granted: 1975-03-11
•
Expires: 1993-12-03
Abstract
Abstract A battery is provided with a passageway for the venting of gases generated by the cell. The passageway is outside of or in a gaspervious layer of the cell enclosure, and gases travel between the interior of the cell and the passageway by first passing through the gas-pervious layer. The passageway may be the center of a hollow, gas-pervious fiber. Alternatively, a fiber may be in a passageway between the unlaminated surfaces of an inner gaspervious layer and an outer layer which is impervious to liquids and less pervious than the inner layer to the gases generated by the cell. The gas-pervious layer may be (i) on the outside face of an end cell of the battery to provide a terminal vent, (ii) situated within a gas-pervious adhesive, or (iii) situated between the cells of a multicell battery.
Inventors
- 👤 Bernard C Bergum
- 👤 Tor Oppedal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:00
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/394; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
149 words
AN IMPROVEMENT IN A BATTERY HAVING A. AT LEAST ONE CELL COMPRISING I. A POSITIVE ELECTRODE, II. A NEGATIVE ELECTRODE, AND III. A ELECTROLYTE-CONTAINING LAYER SEPARATING THE TWO ELECTRODES, AND B. A CELL TERMINAL MEMBER IN CONTACT WITH THE OUTSIDE FACE OF ONE OF THE END ELECTRODES AND PROVIDING A TERMINAL THEREFOR, THE CELL TERMINAL MEMBER COMPRISING AN ELECTRICALLY CONDUCTIVE, LIQUID IMPERVIOUS PLASTIC INNER LAYER WHICH IS PERVIOUS TO THE GASES GENERATED BY THE CELL, WHEREIN THE IMPROVEMENT PROVIDES A GAS-VENTING PASSAGEWAY, THE PASSAGEWAY COMPRISING C. A HOLLOW FIBER MADE FROM A MATERIAL WHICH IS PERVIOUS TO THE GASES TO BE VENTED FROM THE CELL, THE FIBER BEING SITUATED BEYOND THE INSIDE FACE OF THE GAS-PERVIOUS INNER LAYER SO THAT GASES GENERATED BY THE CELL MUST FIRST PASS THROUGH THE INNER LAYER BEFORE REACHING THE FIBER, THE HOLLOW INTERIOR OF THE FIBER COMMUNICATING WITH THE EXTERIOR OF THE BATTERY.
Claim 2
Dependent Claim
149 words
AN IMPROVEMENT IN A BATTERY HAVING A. AT LEAST ONE CELL COMPRISING I. A POSITIVE ELECTRODE, II. A NEGATIVE ELECTRODE, AND III. A ELECTROLYTE-CONTAINING LAYER SEPARATING THE TWO ELECTRODES, AND B. A CELL TERMINAL MEMBER IN CONTACT WITH THE OUTSIDE FACE OF ONE OF THE END ELECTRODES AND PROVIDING A TERMINAL THEREFOR, THE CELL TERMINAL MEMBER COMPRISING AN ELECTRICALLY CONDUCTIVE, LIQUID IMPERVIOUS PLASTIC INNER LAYER WHICH IS PERVIOUS TO THE GASES GENERATED BY THE CELL, WHEREIN THE IMPROVEMENT PROVIDES A GAS-VENTING PASSAGEWAY, THE PASSAGEWAY COMPRISING C. A HOLLOW FIBER MADE FROM A MATERIAL WHICH IS PERVIOUS TO THE GASES TO BE VENTED FROM THE CELL, THE FIBER BEING SITUATED BEYOND THE INSIDE FACE OF THE GAS-PERVIOUS INNER LAYER SO THAT GASES GENERATED BY THE CELL MUST FIRST PASS THROUGH THE INNER LAYER BEFORE REACHING THE FIBER, THE HOLLOW INTERIOR OF THE FIBER COMMUNICATING WITH THE EXTERIOR OF THE BATTERY.
Claim 3
Dependent Claim
149 words
An improvement in a battery having a. at least one cell comprising i. a positive electrode, ii. a negative electrode, and iii. a electrolyte-containing layer separating the two electrodes, and b. a cell terminal member in contact with the outside face of one of the end electrodes and providing a terminal therefor, the cell terminal member comprising an electrically conductive, liquid impervious plastic inner layer which is pervious to the gases generated by the cell, wherein the improvement provides a gas-venting passageway, the passageway comprising c. a hollow fiber made from a material which is pervious to the gases to be vented from the cell, the fiber being situated beyond the inside face of the gas-pervious inner layer so that gases generated by the cell must first pass through the inner layer before reaching the fiber, the hollow interior of the fiber communicating with the exterior of the battery.
Claim 4
Dependent Claim
149 words
An improvement in a battery having a. at least one cell comprising i. a positive electrode, ii. a negative electrode, and iii. a electrolyte-containing layer separating the two electrodes, and b. a cell terminal member in contact with the outside face of one of the end electrodes and providing a terminal therefor, the cell terminal member comprising an electrically conductive, liquid impervious plastic inner layer which is pervious to the gases generated by the cell, wherein the improvement provides a gas-venting passageway, the passageway comprising c. a hollow fiber made from a material which is pervious to the gases to be vented from the cell, the fiber being situated beyond the inside face of the gas-pervious inner layer so that gases generated by the cell must first pass through the inner layer before reaching the fiber, the hollow interior of the fiber communicating with the exterior of the battery.
Claim 5
Dependent Claim
50 words
The battery of claim 1 wherein the cell terminal member comprises the combination of the inner layer and an outer layer, the outer layer being less pervious than the inner layer to the gases generated by the cell, the hollow fiber being situated between the cell and the outer layer.
Claim 6
Dependent Claim
39 words
The battery of claim 1 in which the cell terminal member is sealed around the periphery of the cell and in which the hollow fiber extends into and communicates with the exterior of the battery near the peripheral seal.
Claim 7
Dependent Claim
70 words
The battery of claim 1 wherein the cell terminal member comprises the combination of the inner layer and an outer layer, the outer layer being less peRvious than the inner layer to the gases generated by the cell, the inner and outer layers being laminated together at some but not all of their interfacing surfaces, the hollow fiber being situated between the unlaminated surfaces of the inner and outer layers.
Claim 8
Dependent Claim
39 words
The battery of claim 4 in which the cell terminal member is sealed around the periphery of the cell and in which the hollow fiber extends into and communicates with the exterior of the battery near the peripheral seal.
Claim 9
Dependent Claim
169 words
An improvement in a battery having a. at least one cell comprising i. a positive electrode, ii. a negative electrode, and iii. an electrolyte-containing layer separating the two electrodes, and b. a cell enclosure member extending around a portion of the cell and comprising the combination of i. an inner layer which faces the cell and which is pervious to gases generated by the cell and ii. an outer layer which is less pervious than the inner layer to the gases generated by the cell, wherein the improvement provides a gas-venting passageway, the improvement comprising c. a lamination between some but not all of the interfacing surfaces of the inner and outer layers, the unlaminated surfaces of the two layers defining a passageway which communicates with the exterior of the battery, the passageway being situated beyond the inside face of the inner member so that gases generated by the cell must first pass through the inner layer before reaching the passageway, and d. a fiber disposed in the passageway.
Claim 10
Dependent Claim
169 words
An improvement in a battery having a. at least one cell comprising i. a positive electrode, ii. a negative electrode, and iii. an electrolyte-containing layer separating the two electrodes, and b. a cell enclosure member extending around a portion of the cell and comprising the combination of i. an inner layer which faces the cell and which is pervious to gases generated by the cell and ii. an outer layer which is less pervious than the inner layer to the gases generated by the cell, wherein the improvement provides a gas-venting passageway, the improvement comprising c. a lamination between some but not all of the interfacing surfaces of the inner and outer layers, the unlaminated surfaces of the two layers defining a passageway which communicates with the exterior of the battery, the passageway being situated beyond the inside face of the inner member so that gases generated by the cell must first pass through the inner layer before reaching the passageway, and d. a fiber disposed in the passageway.
Claim 11
Dependent Claim
35 words
The battery of claim 6 in which the fiber has a hollow interior and in which the fiber is made from a material which is pervious to the gases to be vented from the cell.
Claim 12
Dependent Claim
13 words
The battery of claim 6 in which the fiber has a solid interior.
Claim 13
Dependent Claim
18 words
The battery of claim 7 in which the fiber is laminated to the inner and/or the outer layers.
Claim 14
Dependent Claim
18 words
The battery of claim 8 in which the fiber is laminated to the inner and/or the outer layers.
Claim 15
Dependent Claim
19 words
The battery of claim 7 in which the fiber is not laminated to either the inner or outer layers.
Claim 16
Dependent Claim
19 words
The battery of claim 8 in which the fiber is not laminated to either the inner or outer layers.
Claim 17
Dependent Claim
34 words
The battery of claim 6 in which the cell enclosure and the fiber are situated on the outside face of an end cell of the battery, thereby providing a terminal vent for the battery.
Claim 18
Dependent Claim
37 words
The battery of claim 13 in which the cell enclosure is sealed around the periphery of the cell and in which the passageway extends into and communicates with the exterior of the battery near the peripheral seal.
Claim 19
Dependent Claim
34 words
The battery of claim 11 in which the cell enclosure and the fiber are situated on the outside face of an end cell of the battery, thereby providing a terminal vent for the battery.
Claim 20
Dependent Claim
37 words
The battery of claim 15 in which the cell enclosure is sealed around the periphery of the cell and in which the passageway extends into and communicates with the exterior of the battery near the peripheral seal.
Claim 21
Dependent Claim
34 words
The battery of claim 12 in which the cell enclosure and the fiber are situated on the outside face of an end cell on the battery, thereby providing a terminal vent for the battery.
Claim 22
Dependent Claim
37 words
The battery of claim 17 in which the cell enclosure is sealed around the periphery of the cell and in which the passageway extends into and communicates with the exterior of the battery near the peripheral seal.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |