Patent EP0126936A2 successfully refreshed from Google Patents.
EP0126936A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
High frequency switching battery charger
Assignee: Honeywell International Inc
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Filing: 1984-04-14
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Granted: —
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Expires: 2004-04-14
Abstract
Abstract A power supply for charging a storage battery includes a switching pulse width modulator for controlling the current flowing from an input rectifier to an output transformer. The input rectifier is convertable from a full-wave bridge to a voltage doubler for operation at two different line voltages. A current limiting circuit and a charging voltage control circuit are both responsive to sensed output current to closely match the output of the power supply to the charging capacity of the battery. An overcurrent sensing circuit protects the power supply and battery against the results of line transients and shorted battery cells. A sensing circuit detects the absence of a battery, and an end-of-charge sensing circuit detects full charge voltage. A latching circuit disables the power supply on detection of overcurrent, absence of a battery, or full charge voltage.
Inventors
- 👤 Henry Kaminski
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:11
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J7/60; H02J7/61; H02J7/62; H02J7/80; H02J7/82; H02J2207/00; H02J2207/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
236 words
A power supply for charging a storage battery, comprising: power supply means adapted to be connected to a source of electrical energy; rectifying means operatively connected to said power supply means; output transformer means operatively connected to said rectifying-means and to said battery; power switching means operatively connected to said output transformer means for controlling a flow of current through said output transformer means; pulse width modulator means operatively connected to said power switching means for controlling said power switching means; current sensing means for sensing said flow of current through said output transformer means; current limiting means responsive to said current sensing means and operatively connected to said pulse width modulator means for controlling said pulse width modulator means; charging voltage control means responsive to said current sensing means and operatively connected to said pulse width modulator means for controlling said pulse width modulator means; latch means for stopping said pu..se width modulator means operatively connected to said pulse width modulator means; overcurrent sensing means responstve to said current sensing means operatively connected to said latch means for controlling said atch , means; means for sensing the absense of said storage battery operatively connected to said latch means for controlling said latch means; and end-of-charge sensing means operatively connected to a terminal of said battery and to said latch means for controlling said latch means responsive to a predetermined voltage present at said terminal. c
Claim 2
Dependent Claim
236 words
A power supply for charging a storage battery, comprising: power supply means adapted to be connected to a source of electrical energy; rectifying means operatively connected to said power supply means; output transformer means operatively connected to said rectifying-means and to said battery; power switching means operatively connected to said output transformer means for controlling a flow of current through said output transformer means; pulse width modulator means operatively connected to said power switching means for controlling said power switching means; current sensing means for sensing said flow of current through said output transformer means; current limiting means responsive to said current sensing means and operatively connected to said pulse width modulator means for controlling said pulse width modulator means; charging voltage control means responsive to said current sensing means and operatively connected to said pulse width modulator means for controlling said pulse width modulator means; latch means for stopping said pu..se width modulator means operatively connected to said pulse width modulator means; overcurrent sensing means responstve to said current sensing means operatively connected to said latch means for controlling said atch , means; means for sensing the absense of said storage battery operatively connected to said latch means for controlling said latch means; and end-of-charge sensing means operatively connected to a terminal of said battery and to said latch means for controlling said latch means responsive to a predetermined voltage present at said terminal. c
Claim 3
Dependent Claim
25 words
A power supply according to claim 1, further comprising: a coupling transformer means interposed between said pulse width modulator means and said power switching means.
Claim 4
Dependent Claim
35 words
A power supply according to claim 2, further comprising: timer means operatively connected to said pulse width modulator means for stopping said pulse width modulator means after the passage of a predetermined period of time.
Claim 5
Dependent Claim
51 words
A power supply according to claim 1, wherein: said latching means includes first and second switch means, said first switch means being responsive to said overcurrent sensing means and said second switch means being responsive to said end-of-charge sensing means and to said means for sensing the absence of said battery.
Claim 6
Dependent Claim
32 words
A power supply according to claim 1, wherein: said pulse width modulator means is an integrated circuit regulating pulse width modulator and further includes amplifier means operatively connected to said integrated circuit.
Claim 7
Dependent Claim
16 words
A power supply according to claim 1, wherein: said current sensing means includes a toroidal transformer.
Claim 8
Dependent Claim
43 words
A power supply according to claim 1, wherein: said rectifying means includes voltage doubler means for doubling an output voltage of said rectifying means when said power supply means is connected to a supply of electrical energy at a first predetermined low voltage.
Claim 9
Dependent Claim
16 words
A power supply according to claim 1, wherein: said overcurrent sensing means includes a zener diode.
Claim 10
Dependent Claim
30 words
A power supply according to claim 1, wherein: said latch means includes indicator means for providing an indication that said pulse width modulator has been stopped by said latch means.
Claim 11
Dependent Claim
82 words
A power supply according to claim 4, wherein: said first switch means includes first indicator means; and said second switch means includes second indicator means; said first indicator means providing an indication that said pulse width modulator has been stopped in response to said overcurrent sensing means; and said second indicator means providing an indication that said pulse width modulator has been stopped in response to one of said end-of-charge sensing means and said means for sensing the absence of said battery.
References Cited (Backward Citations)
No citation records indexed.
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