CN103633716A - Automatic- power off charger circuit - Google Patents
Automatic- power off charger circuit Download PDFInfo
- Publication number
- CN103633716A CN103633716A CN201210299964.1A CN201210299964A CN103633716A CN 103633716 A CN103633716 A CN 103633716A CN 201210299964 A CN201210299964 A CN 201210299964A CN 103633716 A CN103633716 A CN 103633716A
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- Prior art keywords
- relay
- open switch
- voltage
- self
- charger circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
An embodiment of the invention discloses an automatic-power off charger circuit including a relay and an optocoupler. A normally open switch of the relay is connected in parallel to two ends of an open switch of a power input end, and when the relay is in operation, the normally open switch and the open switch are self-locked; and an inner light emitting diode of the optocoupler and a voltage regulator diode are in series reverse connection between batteries, and when the voltage regulator diode is subjected to reverse breakdown to cause the relay de-energized, the normally open switch and the open switch are unlocked. The automatic-power off charger circuit is used for detecting the charging voltage of the batteries, and when the charging voltage reaches an upper limit, the charging circuit is de-energized via the relay, thereby bringing about a more secure charging circuit.
Description
Technical field
The present invention relates to a kind of charger circuit, relate in particular to a kind of Self-disconnecting charger circuit.
Background technology
In the prior art, charger circuit emerges in an endless stream, and function is day by day perfect, but the problem of bringing for over-charging of battery, still, without good solution, what in technical field, generally adopt at present is to turn-off charging circuit by electronic switch, but it still can not solve the generation of fault.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of Self-disconnecting charger circuit is provided.Can be mechanically, when battery is full of, automatic shutdown circuit.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of Self-disconnecting charger circuit, comprise relay and optical coupler, the normal open switch of described relay is parallel to the opening switch two ends of power input, when described relay work, described normal open switch and opening switch form self-locking; Interior light-emitting diode and the voltage-stabiliser tube diode reverse of described optical coupler are serially connected with between storage battery, when voltage-stabiliser tube diode reverse breakdown, make described relay electric-loss, and described normal open switch and opening switch form self-locking releasing.
Further, described storage battery is also connected in series adjustable resistance with voltage-stabiliser tube diode.
Implement the embodiment of the present invention, there is following beneficial effect: the charging voltage to storage battery detects, when reaching upper voltage limit, by relay, make charging circuit dead electricity, thereby bring safer charging circuit.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below the present invention is described in further detail.
With reference to the electrical block diagram of the present invention shown in Fig. 1.
The present invention, while utilizing voltage stabilizing didoe reverse breakdown, obtains optical coupler electric, controls the self-locking of the normal open switch formation of relay, circuit input end is mended and cut off.
The present invention realizes like this, in the front end of transformer T1, the Chang Kaiguan of relay K 1 opens with starting switch SB and is split into relation in parallel, be serially connected with the prime input of transformer T1, transformer T1 has AC12V, AC9V output, wherein on AC12V one end by the coil of input relay K1 after diode D1 halfwave rectifier, the collector electrode of the other end connecting valve pipe VT of coil, its base stage connects the voltage output end after diode D1 halfwave rectifier by biasing resistor R2, when starting switch SB is pressed, relay K 1 obtains electric, normal open switch K1 is closed, form self-locking, the AC9V output of transformer T1 is that storage battery E charges by variable resistor RP after by diode D2 halfwave rectifier, variable resistor RP also connects voltage-stabiliser tube diode D3, the light-emitting diode of portion and voltage-stabiliser tube diode D3 Opposite direction connection in optical coupler IC, in the base stage of switching tube connecting valve pipe VT of portion, when the charging voltage of storage battery E reaches higher limit, puncture voltage-stabiliser tube diode D3, make the light-emitting diode of portion in optical coupler IC obtain electric, make the base voltage of switching tube VT by drop-down, relay K 1 dead electricity, its normal open switch K1 disconnects, self-locking relation broken, circuit input end is cut off.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (2)
1. a Self-disconnecting charger circuit, is characterized in that, comprises relay and optical coupler, and the normal open switch of described relay is parallel to the opening switch two ends of power input, and when described relay work, described normal open switch and opening switch form self-locking; Interior light-emitting diode and the voltage-stabiliser tube diode reverse of described optical coupler are serially connected with between storage battery, when voltage-stabiliser tube diode reverse breakdown, make described relay electric-loss, and described normal open switch and opening switch form self-locking releasing.
2. Self-disconnecting charger circuit according to claim 1, is characterized in that, described storage battery is also connected in series adjustable resistance with voltage-stabiliser tube diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299964.1A CN103633716A (en) | 2012-08-22 | 2012-08-22 | Automatic- power off charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299964.1A CN103633716A (en) | 2012-08-22 | 2012-08-22 | Automatic- power off charger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103633716A true CN103633716A (en) | 2014-03-12 |
Family
ID=50214454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299964.1A Pending CN103633716A (en) | 2012-08-22 | 2012-08-22 | Automatic- power off charger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103633716A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072783A (en) * | 2015-09-11 | 2015-11-18 | 吉春社 | LED power supply |
| CN110112798A (en) * | 2019-04-03 | 2019-08-09 | 六安市同心畅能电子科技有限公司 | Electro-mobile battery-charging protector circuit |
| CN111644722A (en) * | 2020-06-30 | 2020-09-11 | 深圳创维－Rgb电子有限公司 | Power supply circuit and device for electric soldering iron |
-
2012
- 2012-08-22 CN CN201210299964.1A patent/CN103633716A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072783A (en) * | 2015-09-11 | 2015-11-18 | 吉春社 | LED power supply |
| CN105072783B (en) * | 2015-09-11 | 2017-08-25 | 厦门东昂光电科技有限公司 | A kind of LED power |
| CN110112798A (en) * | 2019-04-03 | 2019-08-09 | 六安市同心畅能电子科技有限公司 | Electro-mobile battery-charging protector circuit |
| CN111644722A (en) * | 2020-06-30 | 2020-09-11 | 深圳创维－Rgb电子有限公司 | Power supply circuit and device for electric soldering iron |
| CN111644722B (en) * | 2020-06-30 | 2022-05-20 | 深圳创维－Rgb电子有限公司 | Power supply circuit and device for electric soldering iron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140312 |