US3902918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for feeding cells of an electrochemical battery of forced circulation type
Assignee: Alcatel Lucent SAS
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Filing: 1974-12-11
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Granted: 1975-09-02
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Expires: 1994-12-11
Abstract
Abstract The invention, which makes it possible to feed in series with electrolyte at a predetermined flow rate and near pressure specified electrochemical cells grouped into identical modules, consists in placing between each module, a pump suitable for compensating the pressure drop in the module immediately upstream, at the same time placing downstream from the assembly of modules a pump suitable for developing a pressure equal to the difference between the said predetermined pressure and half the pressure drop in the module arranged upstream. A pump suitable for creating a pressure drop equal to the sum of the said average pressure and of half pressure drop in the module arranged downstream is also placed upstream from the assembly of the cells.
Inventors
- 👤 Jean Paul Pompon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:34
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/70; H01M50/77; H01M8/00; H01M8/04; H01M8/04082; H01M8/04186; H01M8/22; H01M8/225; H01M8/04276; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
216 words
In a method for feeding in series, cells of a forced fluid flow electrochemical battery with a predetermined flow rate and a constant predetermined average pressure, that battery being of the type in which said cells are grouped together in modules, each comprising the same number of cells and wherein said method includes the step of placing, between each module (11) and the module (12) situated downstream, at least one pump 81 installed within the circuit and operating said pump for compensating the pressure drop (n Delta p) occurring within the module (11) arranged upstream thereof; the improvement comprising the steps of: placing at least one pump (9) for developing, at said predetermined flow rate (Di), a pressure equal to the difference between said predetermined mean pressure (Pm) on the one hand and half (n Delta p/2) the pressure drop in the module (1m) immediately upstream thereof downstream of the last module 1m in said series; and placing at least one pump (10) for developing, at said predetermined flow rate (Di), a pressure drop (Po) equal to the sum of said predetermined mean pressure (Pm) on the one hand and of the half (n Delta p/2) the loss of pressure in the module 11 immediately downstream thereof, upstream of the first module 11 of said series.
Claim 2
Dependent Claim
216 words
In a method for feeding in series, cells of a forced fluid flow electrochemical battery with a predetermined flow rate and a constant predetermined average pressure, that battery being of the type in which said cells are grouped together in modules, each comprising the same number of cells and wherein said method includes the step of placing, between each module (11) and the module (12) situated downstream, at least one pump 81 installed within the circuit and operating said pump for compensating the pressure drop (n Delta p) occurring within the module (11) arranged upstream thereof; the improvement comprising the steps of: placing at least one pump (9) for developing, at said predetermined flow rate (Di), a pressure equal to the difference between said predetermined mean pressure (Pm) on the one hand and half (n Delta p/2) the pressure drop in the module (1m) immediately upstream thereof downstream of the last module 1m in said series; and placing at least one pump (10) for developing, at said predetermined flow rate (Di), a pressure drop (Po) equal to the sum of said predetermined mean pressure (Pm) on the one hand and of the half (n Delta p/2) the loss of pressure in the module 11 immediately downstream thereof, upstream of the first module 11 of said series.
Claim 3
Dependent Claim
23 words
A device according to claim 2, wherein: said fluid (6) is the electrolyte of the electrochemical generator containing a metallic powder in suspension.
Claim 4
Dependent Claim
13 words
A device according to claim 3, wherein: said metallic powder is zinc powder.
Claim 5
Dependent Claim
19 words
A device according to claim 2, wherein: said predetermined average pressure (Pm) has a different value from atmospheric pressure.
Claim 6
Dependent Claim
23 words
A device according to claim 2, wherein: said pumps are rotary pumps including rotors and have their rotors driven by a common shaft.
Claim 7
Dependent Claim
19 words
A device according to claim 6, wherein: said rotors are driven at the same speed and have different dimensions.
Claim 8
Dependent Claim
19 words
A device according to claim 6, wherein: said rotors are driven at different speeds and have substantially identical dimensions.
Claim 9
Dependent Claim
25 words
A device according to claim 2 wherein: an independent drive motor is connected with each of the pumps (81 . . . 8m, 9, 10).
Claim 10
Dependent Claim
25 words
A device according to claim 2, wherein: said fluid (6) is lead out from the last module and is recycled to the said tank (7).
References Cited (Backward Citations)
US3708345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |