CN104578353A - Battery charger for preventing overload and automatic power off - Google Patents
Battery charger for preventing overload and automatic power off Download PDFInfo
- Publication number
- CN104578353A CN104578353A CN201310514466.9A CN201310514466A CN104578353A CN 104578353 A CN104578353 A CN 104578353A CN 201310514466 A CN201310514466 A CN 201310514466A CN 104578353 A CN104578353 A CN 104578353A
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- resistance
- triode
- potentiometer
- diode
- resistor
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- 238000004804 winding Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- H02J7/027—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a battery charger for preventing overload and automatic power off. The battery charger comprises an alternating current power supply, a transformer, a rectifier, a battery, a first potentiometer, a second potentiometer, a third potentiometer, a thermistor, a first diode, a second diode, a third diode, a first triode, a second triode, a third triode, a first capacitor, a second capacitor, an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor and a twelfth resistor. The battery charger for preventing overload and automatic power off, disclosed by the invention, has the characteristics of being simple in circuit structure, less in adopted elements, small in size, low in fabricating cost and easy to fabricate, especially has the advantage of good overload preventing capability, can be automatically powered off after the charging is completed, and is easy to popularize.
Description
Technical field
The present invention relates to a kind of battery charger of telecommunications product, particularly relate to the battery charger of a kind of antioverloading and auto-breaking.
Background technology
For the battery charger of telecommunications product in prior art, circuit structure is complicated, employing element is many, bulky, also be not easy to make, can not auto-breaking after especially expensive and antioverloading ability and charging complete, make charger be not easy to promote.
Summary of the invention
Object of the present invention is just the battery charger providing a kind of antioverloading and auto-breaking in order to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes AC power, transformer, rectifier, battery, first potentiometer, second potentiometer, 3rd potentiometer, thermistor, first diode, second diode, 3rd diode, first triode, second triode, 3rd triode, first electric capacity, second electric capacity, operational amplifier, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance and the 12 resistance, the live wire of described AC power is connected with the first end of described transformer first winding, the zero line of described AC power is connected with the second end of described transformer first winding, the first end of described transformer second winding is connected with the power positive end of described rectifier, second end of described transformer second winding is connected with described rectifier power source negative pole end, the positive pole of described rectifier simultaneously with the first end of described first electric capacity, the first end of described first resistance, the emitter of described first triode is connected with the emitter of described second triode, the negative pole of described rectifier simultaneously with the second end of described first electric capacity, the positive pole of described first diode, the power-of described operational amplifier is extreme, the first end of described 9th resistance, the first end of described 12 resistance is connected with the negative pole of described battery, second end of described first resistance is connected with the first end of described second resistance, second end of described second resistance is connected with the first end of described 3rd resistance and the negative pole of described first diode simultaneously, second end of described 3rd resistance is connected with the reverse input end of described operational amplifier and the first end of described 4th resistance simultaneously, second end of described 4th resistance is connected with the negative pole of described second diode, the first end of described 5th resistance is connected with the input in the same way of described operational amplifier and the first end of described tenth resistance simultaneously, with the output of described operational amplifier while of the second end of described 5th resistance, the emitter of described 3rd triode, the first end of described second electric capacity, the positive pole of described second diode is connected with the first end of described first potentiometer, the first end of described 6th resistance is connected with the base stage of described first triode, second end of described 6th resistance is connected with the described first end of the 7th resistance and the first end of described thermistor simultaneously, second end of described 7th resistance is connected with the base stage of described second triode, the first end of described 8th resistance is connected with the positive pole of described 3rd diode, second end of described 8th resistance is connected with the second end of described 9th resistance and the base stage of described 3rd triode simultaneously, second end of described tenth resistance is connected with the sliding end of described 3rd potentiometer, the first end of described 11 resistance simultaneously with the collector electrode of described second triode, the collector electrode of described first triode, the negative pole of described 3rd diode is connected with the positive pole of described battery, second end of described 11 resistance is connected with the first end of described 3rd potentiometer, second end of described 12 resistance is connected with the second end of described 3rd potentiometer, second end of described second electric capacity is connected with the power positive end of described operational amplifier, the second end of described thermistor simultaneously with the second end of described first potentiometer, the sliding end of described first potentiometer, the first end of described second potentiometer, the sliding end of described second potentiometer connects, and the second end of described second potentiometer is connected with the collector electrode of described 3rd triode
Beneficial effect of the present invention is:
The present invention is the battery charger of a kind of antioverloading and auto-breaking, not only have circuit structure simple, adopt that element is few, volume is little, cost of manufacture is low and the feature of easy making, especially having after the good and charging complete of antioverloading ability can the advantage of auto-breaking, is easy to promote.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: the present invention includes AC power AC, transformer T, rectifier DR, battery E, first potentiometer RP1, second potentiometer RP2, 3rd potentiometer RP3, thermistor Rt, first diode VD1, second diode VD2, 3rd diode VD3, first triode VT1, second triode VT2, 3rd triode VT3, first electric capacity C1, second electric capacity C2, operational amplifier A, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11 and the 12 resistance R12, the live wire of AC power AC is connected with the first end of transformer T first winding, the zero line of AC power AC is connected with the second end of transformer T first winding, the first end of transformer T second winding is connected with the power positive end of rectifier DR, second end of transformer T second winding is extremely connected with rectifier DR power-, the positive pole of rectifier DR simultaneously with the first end of the first electric capacity C1, the first end of the first resistance R1, the emitter of the first triode VT1 is connected with the emitter of the second triode VT2, the negative pole of rectifier DR simultaneously with second end of the first electric capacity C1, the positive pole of described first diode, the power-of operational amplifier A is extreme, the first end of the 9th resistance R9, the first end of the 12 resistance R12 is connected with the negative pole of battery E, second end of the first resistance R1 is connected with the first end of the second resistance R2, second end of the second resistance R2 is connected with the first end of the 3rd resistance R3 and the negative pole of the first diode VD1 simultaneously, second end of the 3rd resistance R3 is connected with the reverse input end of operational amplifier A and the first end of the 4th resistance R4 simultaneously, second end of the 4th resistance R4 is connected with the negative pole of the second diode VD2, the first end of the 5th resistance R5 is connected with the input in the same way of operational amplifier A and the first end of the tenth resistance R10 simultaneously, with the output of operational amplifier A while of second end of the 5th resistance R5, the emitter of the 3rd triode VT3, the first end of the second electric capacity C2, the positive pole of the second diode VD2 is connected with the first end of the first potentiometer RP1, the first end of the 6th resistance R6 is connected with the base stage of the first triode VT1, second end of the 6th resistance R6 is connected with the first end of the 7th resistance R7 and the first end of thermistor Rt simultaneously, second end of the 7th resistance R7 is connected with the base stage of the second triode VT2, the first end of the 8th resistance R8 is connected with the positive pole of the 3rd diode VD3, second end of the 8th resistance R8 is connected with second end of the 9th resistance R9 and the base stage of the 3rd triode VT3 simultaneously, second end of the tenth resistance R10 is connected with the sliding end of the 3rd potentiometer RP3, the first end of the 11 resistance R11 simultaneously with the collector electrode of the second triode VT2, the collector electrode of the first triode VT1, the negative pole of the 3rd diode VD3 is connected with the positive pole of battery E, second end of the 11 resistance R11 is connected with the first end of the 3rd potentiometer RP3, second end of the 12 resistance R12 is connected with second end of the 3rd potentiometer RP3, second end of the second electric capacity C2 is connected with the power positive end of operational amplifier A, second end of thermistor Rt simultaneously with second end of the first potentiometer RP1, the sliding end of the first potentiometer RP1, the first end of the second potentiometer RP2, the sliding end of the second potentiometer RP2 connects, and second end of the second potentiometer RP2 is connected with the collector electrode of the 3rd triode VT3.
As shown in Figure 1: charging is divided into three phases, the first stage: when battery E electric charge discharges completely, 2A current charges of only having an appointment, thus prevents chargers gets overloaded, second stage: with maximum constant current charge; Phase III: carry out boost charge with the electric current reduced rapidly.When voltage is raised to sufficiently high time, circuit cuts off automatically.Thermistor Rt plays hot overload protection effect, is loaded on one, shows base current and load current with the first triode VT1 and the second triode VT2, heating is dropped to the degree of permission.
Claims (1)
1. a battery charger for antioverloading and auto-breaking, is characterized in that: comprise AC power, transformer, rectifier, battery, first potentiometer, second potentiometer, 3rd potentiometer, thermistor, first diode, second diode, 3rd diode, first triode, second triode, 3rd triode, first electric capacity, second electric capacity, operational amplifier, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance and the 12 resistance, the live wire of described AC power is connected with the first end of described transformer first winding, the zero line of described AC power is connected with the second end of described transformer first winding, the first end of described transformer second winding is connected with the power positive end of described rectifier, second end of described transformer second winding is connected with described rectifier power source negative pole end, the positive pole of described rectifier simultaneously with the first end of described first electric capacity, the first end of described first resistance, the emitter of described first triode is connected with the emitter of described second triode, the negative pole of described rectifier simultaneously with the second end of described first electric capacity, the positive pole of described first diode, the power-of described operational amplifier is extreme, the first end of described 9th resistance, the first end of described 12 resistance is connected with the negative pole of described battery, second end of described first resistance is connected with the first end of described second resistance, second end of described second resistance is connected with the first end of described 3rd resistance and the negative pole of described first diode simultaneously, second end of described 3rd resistance is connected with the reverse input end of described operational amplifier and the first end of described 4th resistance simultaneously, second end of described 4th resistance is connected with the negative pole of described second diode, the first end of described 5th resistance is connected with the input in the same way of described operational amplifier and the first end of described tenth resistance simultaneously, with the output of described operational amplifier while of the second end of described 5th resistance, the emitter of described 3rd triode, the first end of described second electric capacity, the positive pole of described second diode is connected with the first end of described first potentiometer, the first end of described 6th resistance is connected with the base stage of described first triode, second end of described 6th resistance is connected with the described first end of the 7th resistance and the first end of described thermistor simultaneously, second end of described 7th resistance is connected with the base stage of described second triode, the first end of described 8th resistance is connected with the positive pole of described 3rd diode, second end of described 8th resistance is connected with the second end of described 9th resistance and the base stage of described 3rd triode simultaneously, second end of described tenth resistance is connected with the sliding end of described 3rd potentiometer, the first end of described 11 resistance simultaneously with the collector electrode of described second triode, the collector electrode of described first triode, the negative pole of described 3rd diode is connected with the positive pole of described battery, second end of described 11 resistance is connected with the first end of described 3rd potentiometer, second end of described 12 resistance is connected with the second end of described 3rd potentiometer, second end of described second electric capacity is connected with the power positive end of described operational amplifier, the second end of described thermistor simultaneously with the second end of described first potentiometer, the sliding end of described first potentiometer, the first end of described second potentiometer, the sliding end of described second potentiometer connects, and the second end of described second potentiometer is connected with the collector electrode of described 3rd triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514466.9A CN104578353A (en) | 2013-10-28 | 2013-10-28 | Battery charger for preventing overload and automatic power off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514466.9A CN104578353A (en) | 2013-10-28 | 2013-10-28 | Battery charger for preventing overload and automatic power off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104578353A true CN104578353A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310514466.9A Pending CN104578353A (en) | 2013-10-28 | 2013-10-28 | Battery charger for preventing overload and automatic power off |
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| CN (1) | CN104578353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069672A (en) * | 2017-04-06 | 2017-08-18 | 六安市同心畅能电子科技有限公司 | A kind of battery overload short circuit automatic power-off protection circuit |
-
2013
- 2013-10-28 CN CN201310514466.9A patent/CN104578353A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069672A (en) * | 2017-04-06 | 2017-08-18 | 六安市同心畅能电子科技有限公司 | A kind of battery overload short circuit automatic power-off protection circuit |
| CN107069672B (en) * | 2017-04-06 | 2019-03-15 | 六安市同心畅能电子科技有限公司 | A kind of battery overload short circuit automatic power-off protection circuit |
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Application publication date: 20150429 |