CN201048290Y - Charger control circuit with polarity recognition and short circuit protection - Google Patents
Charger control circuit with polarity recognition and short circuit protection Download PDFInfo
- Publication number
- CN201048290Y CN201048290Y CNU2007200228244U CN200720022824U CN201048290Y CN 201048290 Y CN201048290 Y CN 201048290Y CN U2007200228244 U CNU2007200228244 U CN U2007200228244U CN 200720022824 U CN200720022824 U CN 200720022824U CN 201048290 Y CN201048290 Y CN 201048290Y
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- CN
- China
- Prior art keywords
- circuit
- relay
- short
- control circuit
- charger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to the battery charging control circuit field, in particular to a charger control circuit with polarity identification and short circuit protection. The utility model has the technical proposal that a charging circuit comprises a transformer B and a rectifying block DZ; an autopolarity and short-circuit protection circuit comprises a resistor R, an audion T and a relay J; a normally open contact J-1 of the relay J is connected to a charging return circuit in series. The two ends of the relay J are connected with a diode D in parallel. With simple structure and convenient operation, the utility model can prevent the burning phenomena caused by the return charge of the storage battery and the short circuit of the output end of the charger from happening when being used in the storage battery charging field.
Description
Technical field
The utility model relates to the battery charge control circuit field, specifically is a kind of charger control circuit with polarity identification and short-circuit protection.
Background technology
Present battery charger does not possess polarity identification and short-circuit protection function, in case storage battery connection error will cause the storage battery reverse charge and damage; If during because of carelessness with the output short circuit of charger, will burn charger.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of simple and practical, safe and reliable charger circuit with auto polarity and short-circuit protection is provided.
Its technical scheme is: form charging circuit by transformer B, rectifying block DZ; Form auto polarity and short-circuit protection circuit by resistance R, triode T, relay J; The normally opened contact J-1 of relay J is connected in the charge circuit.At the two ends of relay J parallel diode D.
The utlity model has simple in structure, easy to use, in the charge in batteries field, use can play prevent that storage battery from instead filling, charger output short circuit and burn the generation of phenomenon.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.A, N are the power supply inputs among the figure; DC is a storage battery, and X is a positive terminal, and Y is a negative pole end.
Embodiment
Be further described with regard to its circuit formation and operation principle below in conjunction with accompanying drawing:
The normally opened contact J-1 of transformer B connection rectifying block DZ, relay J is connected on and forms charging circuit in the charge circuit; Triode T connects resistance R, relay J is formed auto polarity and short-circuit protection circuit; Relay J two ends parallel diode D; The normally opened contact J-1 of relay J is connected in the charge circuit.
Operation principle: when storage battery correctly connected, behind the energized AN, the cathode voltage of storage batteries D C triggered and conducting triode T forward through resistance R, the relay J adhesive, and the closed charging of normally opened contact J-1 is normal.When storage battery connection error, behind the energized AN, the cathode voltage of storage batteries D C oppositely triggers triode T through resistance R and ends, not adhesive of relay J, and normally opened contact J-1 keeps off-state, and storage battery can not be recharged.When making charger output XY short circuit for a certain reason, behind the energized AN, triode T triggerless voltage and ending, not adhesive of relay J, normally opened contact J-1 keeps off-state, and the output of charger can be by short circuit; Thereby realize preventing that storage battery from instead filling, charger output short circuit and burn the generation of phenomenon.
Claims (2)
1. the charger control circuit with polarity identification and short-circuit protection is characterized in that: connect to form charging circuit by power transformer (B), rectifying block (DZ); Connect to form auto polarity and short-circuit protection circuit by resistance (R), triode (T), relay (J); The normally opened contact (J-1) of relay (J) is connected in the charge circuit.
2. the charger control circuit with polarity identification and short-circuit protection according to claim 1 is characterized in that: at the two ends parallel diode (D) of relay (J).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228244U CN201048290Y (en) | 2007-05-29 | 2007-05-29 | Charger control circuit with polarity recognition and short circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228244U CN201048290Y (en) | 2007-05-29 | 2007-05-29 | Charger control circuit with polarity recognition and short circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201048290Y true CN201048290Y (en) | 2008-04-16 |
Family
ID=39300884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200228244U Expired - Fee Related CN201048290Y (en) | 2007-05-29 | 2007-05-29 | Charger control circuit with polarity recognition and short circuit protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201048290Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097841A (en) * | 2010-12-31 | 2011-06-15 | 崧顺电子（深圳）有限公司 | Battery charger |
| CN101572433B (en) * | 2009-03-06 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN101409454B (en) * | 2008-07-30 | 2012-02-01 | 李少华 | charging circuit capable of automatically identifying polarity |
| CN101593996B (en) * | 2009-03-31 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN101572430B (en) * | 2009-03-06 | 2012-02-08 | 李少华 | Novel charging circuit for automatically recognizing polarity |
| CN103490383A (en) * | 2013-10-09 | 2014-01-01 | 兰如根 | Automatic direct-current power source output short circuit protection device |
-
2007
- 2007-05-29 CN CNU2007200228244U patent/CN201048290Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409454B (en) * | 2008-07-30 | 2012-02-01 | 李少华 | charging circuit capable of automatically identifying polarity |
| CN101572433B (en) * | 2009-03-06 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN101572430B (en) * | 2009-03-06 | 2012-02-08 | 李少华 | Novel charging circuit for automatically recognizing polarity |
| CN101593996B (en) * | 2009-03-31 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN102097841A (en) * | 2010-12-31 | 2011-06-15 | 崧顺电子（深圳）有限公司 | Battery charger |
| CN103490383A (en) * | 2013-10-09 | 2014-01-01 | 兰如根 | Automatic direct-current power source output short circuit protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20100529 |