US3798527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical d.c. current transformer system
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1971-10-18
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Granted: 1974-03-19
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Expires: 1991-10-18
Abstract
Abstract Increasing of direct current of a given intensity from a primary source of high energy and low power is effected via an intermediate direct current stage to current of higher intermediate intensity which stage delivers the intermediate intensity to a terminal storage battery capable of supplying desired higher intensity. The terminal storage battery is effectively charged by the intermediate direct current stage storage battery and the latter is fully and effectively charged by the primary source.
Inventors
- 👤 Plessix M Du
- 👤 Y Lecouffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:47
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/44; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
230 words
In combination with a primary source of high energy and low power supplying a low current intensity and a chargeable terminal output storage battery of high capacity capable of supplying a direct current output of desired much higher current intensity to a load, a plurality of intermediate electrochemical d. c. current increasing stages each comprising a storage battery of substantially lower capacity than the terminal output storage battery and each being capable of being charged by said low intensity current from said source, means for for connecting the respective batteries of said stages in sequence to said source to be charged sequentially by said current of low intensity from said source, the batteries of said current increasing stages when charged each being capable of supplying a charging direct current of intensity intermediate said current of low intensity of said source and said desired supply of higher intensity from said output battery to a load and capable of charging said output storage battery and switch means for connecting the respective batteries of said current increasing stages in sequence to said terminal output storage battery to charge the latter by a current of said intermediate intensity successively derived from respective batteries of said current increasing stages, the relative ratio of said low current intensity supplied from said source and said desired higher output current intensity being of the order exceeding several hundreds.
Claim 2
Dependent Claim
230 words
In combination with a primary source of high energy and low power supplying a low current intensity and a chargeable terminal output storage battery of high capacity capable of supplying a direct current output of desired much higher current intensity to a load, a plurality of intermediate electrochemical d. c. current increasing stages each comprising a storage battery of substantially lower capacity than the terminal output storage battery and each being capable of being charged by said low intensity current from said source, means for for connecting the respective batteries of said stages in sequence to said source to be charged sequentially by said current of low intensity from said source, the batteries of said current increasing stages when charged each being capable of supplying a charging direct current of intensity intermediate said current of low intensity of said source and said desired supply of higher intensity from said output battery to a load and capable of charging said output storage battery and switch means for connecting the respective batteries of said current increasing stages in sequence to said terminal output storage battery to charge the latter by a current of said intermediate intensity successively derived from respective batteries of said current increasing stages, the relative ratio of said low current intensity supplied from said source and said desired higher output current intensity being of the order exceeding several hundreds.
Claim 3
Dependent Claim
13 words
In the combination of claim 1, each storage battery having low internal resistance.
Claim 4
Dependent Claim
19 words
In the combination of claim 2, each storage battery being of the nickel-cadmium type with thin sintered electrode plates.
Claim 5
Dependent Claim
13 words
In the combination of claim 3, each storage battery being a sealed type.
Claim 6
Dependent Claim
13 words
In the combination of claim 3, each storage battery being a semi-sealed type.
Claim 7
Dependent Claim
14 words
In the combination of claim 1, the primary source being an electrochemical storage battery.
Claim 8
Dependent Claim
16 words
In the combination of claim 1, the primary source being a windmill operated d. c. generator.
Claim 9
Independent Claim
236 words
A method of changing and amplifying a given initial low intensity direct current output of a primary high energy source to a direct current of a desired higher intensity for delivery to a load comprising the steps of connecting to and successively delivering the given initial direct current of low intensity from said primary high energy source successively to a set of intermediate storage battery means each of relatively low capacity and each being capable of being charged by said low intensity current from said source to charge successively each of said intermediate storage battery means so as to enable supply from each of the said intermediate storage battery means when charged of a current of intensity intermediate the given low current intensity and said desired higher intensity and successively connecting the said intermediate intensity direct current from each of said set as a charging input to a final storage battery of higher capacity than any of the intermediate storage battery means and each being capable of charging said final storage battery to charge said final storage battery means by said current of intermediate intensity from each said intermediate storage battery means so as to enable supply to said load from said final storage battery when charged of an output current of said desired higher intensity, the ratio of initial low intensity current to higher intensity output current being high and the order exceeding several hundreds.
Claim 10
Independent Claim
236 words
A method of changing and amplifying a given initial low intensity direct current output of a primary high energy source to a direct current of a desired higher intensity for delivery to a load comprising the steps of connecting to and successively delivering the given initial direct current of low intensity from said primary high energy source successively to a set of intermediate storage battery means each of relatively low capacity and each being capable of being charged by said low intensity current from said source to charge successively each of said intermediate storage battery means so as to enable supply from each of the said intermediate storage battery means when charged of a current of intensity intermediate the given low current intensity and said desired higher intensity and successively connecting the said intermediate intensity direct current from each of said set as a charging input to a final storage battery of higher capacity than any of the intermediate storage battery means and each being capable of charging said final storage battery to charge said final storage battery means by said current of intermediate intensity from each said intermediate storage battery means so as to enable supply to said load from said final storage battery when charged of an output current of said desired higher intensity, the ratio of initial low intensity current to higher intensity output current being high and the order exceeding several hundreds.
Claim 11
Dependent Claim
197 words
In combination accordiNg to claim 1, said primary source of higher energy and low power being dischargeable at low current intensity in the range of about 0.82 ma for about 320 hours, and said chargeable terminal output battery of high capacity being capable of periodically supplying a direct current output to a load in the range of about 200 amperes the respective batteries of said current increasing stages each being of substantially lower capacity than said terminal output storage battery and connected in sequence to said source to be charged successively by said current of low intensity, each of the batteries of said stages when charged being capable in sequence of supplying charging direct current to said output battery in the range of 1.6 amperes, an intensity intermediate said low current intensity of said source and said desired 200 ampere periodic supply of higher intensity output current from said output battery to said load, and said storage batteries of said stages being connected by said switch means in sequence when charged to charge successively said higher capacity terminal output storage battery with a current of said intermediate intensity from batteries of successive of said current increasing stages.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |