CN102545350A - Circuit of nonpolar safety charger - Google Patents
Circuit of nonpolar safety charger Download PDFInfo
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- CN102545350A CN102545350A CN201110291198XA CN201110291198A CN102545350A CN 102545350 A CN102545350 A CN 102545350A CN 201110291198X A CN201110291198X A CN 201110291198XA CN 201110291198 A CN201110291198 A CN 201110291198A CN 102545350 A CN102545350 A CN 102545350A
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a circuit of a nonpolar safety charger in the field of battery charging circuits. According to the technical scheme of the circuit, a polarity recognizing, rectifying and converting circuit is connected to output ends M and N from an output end of a power supply transformer, and according to the polarity recognizing, rectifying and converting circuit, a negative electrode of a diode D1 and a positive electrode of a diode D2 are respectively connected with second anodes of bidirectional silicon controlled rectifiers T1 and T2, and then are mutually connected in parallel between one end of a secondary coil and the polarity output end M, polarity recognizing diodes D3 and D4 are connected in series between control electrodes of the T1 and the T2, a current-limiting resistor R is connected to an N electrode output end and is connected with the other end of the secondary coil between a negative electrode of the D3 and a positive electrode of the D4, and a positive electrode of the D3 and a negative electrode of the D4 are respectively connected with the control electrodes of the T1 and the T2, so as to form an automatic polarity recognizing and converting circuit. The circuit is simple in structure and is convenient to use. Not only is the charger protected in the condition that the output end is short-circuit, but also the correct charge to a battery can be achieved by the access of a random polarity. The circuit is particularly suitable for the charge of a mobile phone battery, a storage battery and the like.
Description
Technical field:
The present invention relates to the nonpolarity charger circuit in battery charger field.
Background technology:
The current battery charger is various in style, but all has a common characteristic, and just must connect, and the charger output can not short circuit, otherwise will burn battery or charger by correct battery polar, but fire hazard when serious.
Summary of the invention:
The object of the invention is exactly the defective that exists to prior art.The electrodeless safe charging device circuit of a kind of automatic identification battery polar and short-circuit protection is provided.
Its technical scheme:
Its technical scheme is: connect rectification polarity identification change-over circuit to output M, N from the power transformer output.Polarity identification rectification change-over circuit is parallel with one another between secondary coil one end and polarity output terminal M after being linked to each other with bidirectional triode thyristor T1, T2 second plate respectively by diode D1 negative pole, D2 positive pole; Serial connection polarity identification diode D3, D4 between the control utmost point of T1, T2; D3 negative pole, the positive interpolar of D4 connect current-limiting resistance R to a N utmost point output and link to each other with the secondary coil other end; D3 is anodal, the D4 negative pole extremely links to each other with the control of T1, T2 respectively, forms polarity and discerns change-over circuit automatically.This circuit structure is simple, and is easy to use.Not only under the situation of output short circuit, protect charger, and the polarity access can correctly be charged all arbitrarily to battery.
This circuit structure is simple, and is easy to use.Not only under the situation of output short circuit, protect charger, and the polarity access can correctly be charged all arbitrarily to battery.
Description of drawings:
Accompanying drawing is a kind of embodiment circuit theory diagrams.IN is the civil power input among the figure, and M, N are two charging polarity outputs.
Embodiment:
Below in conjunction with accompanying drawing circuit formation and operation principle are further described: its technical scheme is: connect rectification polarity identification change-over circuit to output M, N from the power transformer output.Polarity identification rectification change-over circuit is parallel with one another between secondary coil one end and polarity output terminal M after being linked to each other with bidirectional triode thyristor T1, T2 second plate respectively by diode D1 negative pole D2 positive pole; Serial connection polarity identification diode D3, D4 between the control utmost point of T1, T2; D3 negative pole, the positive interpolar of D4 connect current-limiting resistance R to a N utmost point output and link to each other with the secondary coil other end; D3 is anodal, the D4 negative pole extremely links to each other with the control of T1, T2 respectively, forms polarity and discerns change-over circuit automatically.This circuit structure is simple, and is easy to use.Not only under the situation of output short circuit, protect charger, and the polarity access can correctly be charged all arbitrarily to battery.During charging, when M termination anode, when N connect negative pole, electric current was by the M utmost point → T1A1 → T1G → D3 → R → N.At this moment T1 work short circuit conducting, T2 oppositely ends work because of D4, M end output positive voltage, N is a negative voltage, the charging operate as normal; When the N utmost point connects anode, M connects negative pole, and electric current is by the N utmost point → R → D4 → T2G → T2A1 → M utmost point; At this moment T2 work short circuit conducting, T1 oppositely ends because of D3, N end output positive voltage; M is a negative voltage, and the charging operate as normal has realized that battery polar discerns the purpose of convert charging automatically.As M, when N does not have the battery of connecing, T1, T2 with regard to no-voltage output, can not damage charger during the output short circuit by work yet yet.
Claims (1)
1. electrodeless safe charging device circuit, it is characterized in that: its technical scheme is: connect rectification polarity identification change-over circuit to output M, N from the power transformer output.The polarity identification change-over circuit is parallel with one another between secondary coil one end and polarity output terminal M after being linked to each other with bidirectional triode thyristor T1, T2 second plate respectively by diode D1 negative pole, D2 positive pole; Serial connection polarity identification diode D3, D4 between the control utmost point of T1, T2; D3 negative pole, the positive interpolar of D4 connect current-limiting resistance R to a N utmost point output and link to each other with the secondary coil other end; D3 is anodal, the D4 negative pole extremely links to each other with the control of T1, T2 respectively, forms polarity and discerns change-over circuit automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110291198XA CN102545350A (en) | 2011-09-29 | 2011-09-29 | Circuit of nonpolar safety charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110291198XA CN102545350A (en) | 2011-09-29 | 2011-09-29 | Circuit of nonpolar safety charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102545350A true CN102545350A (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110291198XA Pending CN102545350A (en) | 2011-09-29 | 2011-09-29 | Circuit of nonpolar safety charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102545350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808662A (en) * | 2018-06-12 | 2018-11-13 | 中原工学院 | A kind of fixation dual output power supply of automatic identification input voltage |
| CN113482832A (en) * | 2021-07-06 | 2021-10-08 | 深圳市天成实业科技有限公司 | Intelligent ignition clamp and starting device |
-
2011
- 2011-09-29 CN CN201110291198XA patent/CN102545350A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808662A (en) * | 2018-06-12 | 2018-11-13 | 中原工学院 | A kind of fixation dual output power supply of automatic identification input voltage |
| CN108808662B (en) * | 2018-06-12 | 2020-09-04 | 中原工学院 | Fixed dual-output power supply capable of automatically identifying input voltage |
| CN113482832A (en) * | 2021-07-06 | 2021-10-08 | 深圳市天成实业科技有限公司 | Intelligent ignition clamp and starting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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: 20120704 |