US3763398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery charging system supplied from a polyphase generator
Assignee: Robert Bosch GmbH
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Filing: 1972-08-08
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Granted: 1973-10-02
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Expires: 1992-08-08
Abstract
Abstract To provide for reverse polarity protection without substantial, additional components in star-connected polyphase generator battery charging systems, in which a pair of diodes are connected to the center, star point of the generator and direct current for battery charging is obtained from a polyphase bridge circuit, the protective fuse is interconnected in the additional diode circuit, preferably with the positive output terminal of the generator (in a negative-ground system) to simultaneously protect against over current and reverse polarity.
Inventors
- 👤 I Ragaly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:56
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/60; H02J7/68; H02J7/14; Y; Y10; Y10S; Y10S320/00; Y10S320/15; Y10S320/31
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
In a star-connected polyphase generator, fused, battery charging system with protection against inadvertent connection of the battery to the terminals (18'', 25'') of the system with reverse polarity havIng a fuse (24); a polyphase bridge rectifier circuit (19, 23) having d-c output terminals (18, 25); and a pair of additional diodes (16, 17) having unlike polarized electrodes connected to the center star point (14) of the polyphase generator and their other terminals, each, connected to the d-c output terminals (18, 25) of the bridge rectifier circuit, said system output terminals (18, 25) being protected against reversely applied voltages, the improvement wherein the fuse (24) is connected between one terminal (25'') of the battery charging system and the junction (25) between the polyphase bridge rectifier circuit (19, 23) and one of the additional diodes (17) and formed by one of said output terminals (25) of the rectifier circuit, to form a reverse polarity protective network.
Claim 2
Dependent Claim
154 words
In a star-connected polyphase generator, fused, battery charging system with protection against inadvertent connection of the battery to the terminals (18'', 25'') of the system with reverse polarity havIng a fuse (24); a polyphase bridge rectifier circuit (19, 23) having d-c output terminals (18, 25); and a pair of additional diodes (16, 17) having unlike polarized electrodes connected to the center star point (14) of the polyphase generator and their other terminals, each, connected to the d-c output terminals (18, 25) of the bridge rectifier circuit, said system output terminals (18, 25) being protected against reversely applied voltages, the improvement wherein the fuse (24) is connected between one terminal (25'') of the battery charging system and the junction (25) between the polyphase bridge rectifier circuit (19, 23) and one of the additional diodes (17) and formed by one of said output terminals (25) of the rectifier circuit, to form a reverse polarity protective network.
Claim 3
Dependent Claim
23 words
System according to claim 1, wherein the diodes (16, 17) are connected to the output terminals (18, 25) of the bridge rectifier circuit.
Claim 4
Dependent Claim
21 words
System according to claim 2, wherein the fuse (24) is connected into the positive terminal (25'') of the battery charging system.
Claim 5
Dependent Claim
100 words
System according to claim 1, wherein the fuse (24) is connected between the positive terminal (25'') of the battery charging system and the positive output terminal (25) of the bridge rectifier circuit (19, 23); and one of the additional diodes (17) forms the positive diode connection between the positive output terminal (25) of the bridge rectifier circuit (19, 23) and the star point (14) of the generator to provide a series circuit comprising: fuse (24) - cathode - anode of positive diode (17) between the positive output terminal (25'') of the system and the star point (14) of the generator.
Claim 6
Dependent Claim
20 words
System according to claim 1, wherein the fuse (24) and the additional diodes (16, 17) form a unitary assembly (26).
Claim 7
Dependent Claim
16 words
System according to claim 5, wherein the assembly (26) is secured to the polyphase generator (30).
Claim 8
Dependent Claim
37 words
System according to claim 1, wherein the generator has a cooling body (30), and the additional diodes (16, 17) are secured in thermal conductive relation to the cooling body (30) to provide for cooling of said diodes.
Claim 9
Dependent Claim
12 words
System according to claim 1, wherein said generator is a three-phase generator.
Claim 10
Dependent Claim
115 words
System according to claim 1, wherein said generator is a three-phase generator; the fuse (24) is connected between the positive terminal (25'') of the battery charging system and the positive output terminal (25) of the bridge rectifier circuit, said bridge rectifier circuit including six diodes (19, 23); one additional diode (17) forms the positive diode, connected between the positive output terminal (25) of the bridge rectifier circuit and the star point (14) of the three-phase generator to provide a series circuit including the fuse (24), and the cathode - anode path of the positive diode (17) between the positive output terminal (25'') of the system and the center star point (14) of the three-phase generator.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |