US3909298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Batteries comprising vented electrodes and method of using same
Assignee: Energy Development Associates Inc
•
Filing: 1973-07-16
•
Granted: 1975-09-30
•
Expires: 1993-07-16
Abstract
Abstract An electrode for use in an electrical energy storage device comprising a first side and a second side, thereby forming a channel for flow of an electrolyte with gas dissolved therein, whereby said first side has holes for venting of undissolved gas.
Inventors
- 👤 Peter Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:18
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; H01M4/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
179 words
AN APPARATUS FOR USE IN AN ELECTRIC ENERGY STORAGE DEVICE COMPRISING A FIRST MEMBER HAVING A FRONT AND A BACK SIDE, A SECOND MEMBER HAVING A FRONT AND A BACK SIDE, A PLURALITY OF PASSAGEWAYS FORMED BY THE ATTACHMENT OF THE BACK SIDE OF THE FIRST AND SECOND MEMBERS, SAID MEMBERS HAVING A RELATIVELY LOW PRESSURE DIFFERENTAL THERE ACROSS, A VENTING MEANS FOR PASSING UNDISSOLVED HALOGEN GAS FROM THE PASSAGEWAYS AND FURTHER PROVIDING THAT THE FRONT SIDE OF THE FIRST MEMBER IS A POSITIVE ELECTRODE IN ONE CELL AND THE FRONT SIDE OF THE SECOND MEMBER IS A NEGATIVE ELECTRODE OF SECOND CELL, THE FIRST MEMBER BEING POROUS AND ADAPTED TO PASS THE ELECTROLYTE FROM THE PASSAGEWAYS THROUGH IT AND THE SECOND MEMBER BEING GAS AND ELECTROLYTE IMPERVIOUS, WHEREBY ANY POSSIBLITY OF GAS LOCKING AFTER THE POROUS ELECTRODE IS FLOODED IS EFFECTIVELY PREVENTED, THE POROUS MEMBER HAVING A PORE SIZE RAINGING FROM ABOUT 10 TO ABOUT 100 MICRONS AND THE VENTING MEANS BEING HOLES COMMUNICATING WITH THE PASSAGEWAYS AND RAINGING IN DIAMETER FROM ABOUT 0.5 TO ABOUT 3 MILLIMETERS.
Claim 2
Independent Claim
179 words
AN APPARATUS FOR USE IN AN ELECTRIC ENERGY STORAGE DEVICE COMPRISING A FIRST MEMBER HAVING A FRONT AND A BACK SIDE, A SECOND MEMBER HAVING A FRONT AND A BACK SIDE, A PLURALITY OF PASSAGEWAYS FORMED BY THE ATTACHMENT OF THE BACK SIDE OF THE FIRST AND SECOND MEMBERS, SAID MEMBERS HAVING A RELATIVELY LOW PRESSURE DIFFERENTAL THERE ACROSS, A VENTING MEANS FOR PASSING UNDISSOLVED HALOGEN GAS FROM THE PASSAGEWAYS AND FURTHER PROVIDING THAT THE FRONT SIDE OF THE FIRST MEMBER IS A POSITIVE ELECTRODE IN ONE CELL AND THE FRONT SIDE OF THE SECOND MEMBER IS A NEGATIVE ELECTRODE OF SECOND CELL, THE FIRST MEMBER BEING POROUS AND ADAPTED TO PASS THE ELECTROLYTE FROM THE PASSAGEWAYS THROUGH IT AND THE SECOND MEMBER BEING GAS AND ELECTROLYTE IMPERVIOUS, WHEREBY ANY POSSIBLITY OF GAS LOCKING AFTER THE POROUS ELECTRODE IS FLOODED IS EFFECTIVELY PREVENTED, THE POROUS MEMBER HAVING A PORE SIZE RAINGING FROM ABOUT 10 TO ABOUT 100 MICRONS AND THE VENTING MEANS BEING HOLES COMMUNICATING WITH THE PASSAGEWAYS AND RAINGING IN DIAMETER FROM ABOUT 0.5 TO ABOUT 3 MILLIMETERS.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein the porous member is grooved so that upon attachment to the second member, the passageway for electrolyte flow is formed.
Claim 4
Dependent Claim
109 words
discharging the device by: a. passing the aqueous metal halide electrolyte containing dissolved halogen, which is from the source of halogen in the storage compartment means into the electrode compartment means; b. passing the electrolyte containing dissolved halogen through the porous positive electrode; c. completing the circuit between the positive and negative electrodes and allowing the electrochemical discharge reaction to occur; d. venting undissolved gas through holes communicating with the porous electrode whereby any possibility of gas locking after the porous electrode is flooded is prevented; e. passing the electrolyte out of the electrode compartment means; f. dissolving additional halogen into the electrolyte; and g. returning to Step 2-(a).
Claim 5
Dependent Claim
109 words
discharging the device by: a. passing the aqueous metal halide electrolyte containing dissolved halogen, which is from the source of halogen in the storage compartment means into the electrode compartment means; b. passing the electrolyte containing dissolved halogen through the porous positive electrode; c. completing the circuit between the positive and negative electrodes and allowing the electrochemical discharge reaction to occur; d. venting undissolved gas through holes communicating with the porous electrode whereby any possibility of gas locking after the porous electrode is flooded is prevented; e. passing the electrolyte out of the electrode compartment means; f. dissolving additional halogen into the electrolyte; and g. returning to Step 2-(a).
Claim 6
Dependent Claim
13 words
The apparatus of claim 1 wherein the first and second members are carbonaceous.
Claim 7
Dependent Claim
15 words
The apparatus of claim 1 wherein the first and second members are comprised of graphite.
Claim 8
Dependent Claim
106 words
An electric energy storage device comprising the electrode compartment means containing therein at least two of the apparatus of claim 1, wherein an oxidizable metal is on the front sides of the negative electrodes which metal will oxidize upon discharge, a source of halogen in a storage compartment means available for discharge, a conduit means for connecting the electrode compartment means and the storage compartment means, an aqueous metal halide electrolyte in communication with the positive and negative electrodes and a means for passing the halogen from the source in the storage compartment means through the conduit means to the electrolyte in the electrode compartment means.
Claim 9
Dependent Claim
28 words
The device of claim 5 wherein the porous member is grooved so that upon the attachment to the second member the passageway for flow of electrolyte is formed.
Claim 10
Dependent Claim
16 words
The device of claim 5 wherein the electrolyte is zinc chloride and the gas is chlorine.
Claim 11
Dependent Claim
16 words
A process for producing electrical energy in the device of claim 5 comprising the steps of:
Claim 12
Dependent Claim
16 words
The process of claim 8 wherein the electrolyte is zinc chloride and the gas is chlorine.
Claim 13
Dependent Claim
77 words
The process of claim 8 wherein the electrolyte is passed into the passageways formed by the attachment of the back sides of the first and second members, said members being assembled in a vertical position, said members having a relatively low pressure differential there across, flowing the electrolyte up through the passageways and passing undissolved gas through the holes communicating with the porous member, the holes being located near the top of the vertical porous halogen electrode.
Claim 14
Dependent Claim
34 words
The process of claim 8 wherein the electrolyte is an aqueous zinc chloride electrolyte having a concentration ranging from about 10% to about 35% by weight and the halogen is stored as chlorine hydrate.
Claim 15
Dependent Claim
13 words
The process of claim 8 wherein the first and second members are carbonaceous.
Claim 16
Dependent Claim
15 words
The process of claim 8 wherein the first and second members are compRised of graphite.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |