CN204794284U - Anti -interference charging circuit - Google Patents
Anti -interference charging circuit Download PDFInfo
- Publication number
- CN204794284U CN204794284U CN201520315029.9U CN201520315029U CN204794284U CN 204794284 U CN204794284 U CN 204794284U CN 201520315029 U CN201520315029 U CN 201520315029U CN 204794284 U CN204794284 U CN 204794284U
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- chip
- pin
- resistance
- potentiometer
- circuit
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an anti -interference charging circuit, chip U1 pin 1, electric capacity C1 and chip U1 pin 5 are connected respectively to connecting resistance R1, chip U1 pin 4 and 8, resistance R1 of the chip U1 pin other end respectively behind rectifier module including rectifier module, chip U1, resistance R1, potentiometre RP1 summation potential ware RP2, 220V alternating current. The utility model discloses circuit structure is simple, and the chip of use is small, and the integrated level is high, and is with low costs, works as battery full charge in the charging process, and when battery voltage was higher than the set upper limit value, charging circuit automatic disconnection added electric capacity C1 moreover, has increased the interference killing feature of circuit, made the charger with this circuit, can effectively avoid rechargeable battery to charge for a long time, had reduced energy losses, had increased the life of battery, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of technical field of electronic products, specifically a kind of anti-interference charging circuit.
Background technology
Rechargeable battery is a kind of conventional article in people's daily life, large to electric motor car, laptop computer, little of mobile phone, MP3 can use rechargeable battery, and battery itself has certain discharge and recharge number of times, general battery only has 2 ~ 3 years, therefore battery is after being full of electricity, if charger or powered-down can not be pulled out in time, not only can cause great waste of energy, but also the useful life of battery can be reduced significantly, the charger that more existing performances are good is all expensive, particularly the charger price of mobile phone vendor's outfit is high especially.
Summary of the invention
The purpose of this utility model is to provide the charging circuit that a kind of circuit structure is simple, cost is low, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of anti-interference charging circuit, comprise rectification filtering module, chip U1, resistance R1, potentiometer RP1 and potentiometer RP2, 220V alternating current is difference contact resistance R1 after rectification filtering module, chip U1 pin 4 and chip U1 pin 8, the resistance R1 other end connects chip U1 pin 1 respectively, electric capacity C1 and chip U1 pin 5, the electric capacity C1 other end connects potentiometer RP1 respectively, potentiometer RP2 and batteries E negative pole, chip U1 pin 3 contact resistance R4, the resistance R4 other end connects diode D2 positive pole, diode D2 negative pole is contact resistance R2 respectively, resistance R3 and batteries E positive pole, the resistance R2 other end connects the potentiometer RP1 other end, potentiometer RP1 slide plate connects chip U1 pin 2, chip U1 pin 6 connects potentiometer RP2 slide plate, potentiometer RP2 other end contact resistance R3.
As further program of the utility model: described chip U1 model is NE555.
As the utility model further scheme: described potentiometer RP1 adjustable extent is 0 ~ 25k Ω.
Compared with prior art, the beneficial effects of the utility model are: the utility model circuit structure is simple, the chip volume used is little, integrated level is high, cost is low, when battery full charge in charging process, when cell voltage is higher than capping value, charging circuit disconnects automatically, and adds electric capacity C1, add the antijamming capability of circuit, this circuit is made charger, can effectively avoid rechargeable battery to charge for a long time, decrease electric energy loss, add the useful life of battery, be applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of charging circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of anti-interference charging circuit, comprise rectification filtering module, chip U1, resistance R1, potentiometer RP1 and potentiometer RP2, 220V alternating current is difference contact resistance R1 after rectification filtering module, chip U1 pin 4 and chip U1 pin 8, the resistance R1 other end connects chip U1 pin 1 respectively, electric capacity C1 and chip U1 pin 5, the electric capacity C1 other end connects potentiometer RP1 respectively, potentiometer RP2 and batteries E negative pole, chip U1 pin 3 contact resistance R4, the resistance R4 other end connects diode D2 positive pole, diode D2 negative pole is contact resistance R2 respectively, resistance R3 and batteries E positive pole, the resistance R2 other end connects the potentiometer RP1 other end, potentiometer RP1 slide plate connects chip U1 pin 2, chip U1 pin 6 connects potentiometer RP2 slide plate, potentiometer RP2 other end contact resistance R3.
Chip U1 model is NE555.
Potentiometer RP1 adjustable extent is 0 ~ 25k Ω.
Operation principle of the present utility model is: refer to Fig. 1, chip NE555 here uses as comparative voltage switching circuit, two resistor networks in parallel with charging load batteries E, charging voltage on storage battery E is sampled, trigger end 2 pin of chip U1 is delivered on one road, threshold voltage end 6 pin is delivered on one road, in order to change the reference voltage of two voltage comparators of chip U1 inside, when the voltage that voltage on batteries E presets lower than chip U1 pin 2, chip U1 overturns, the high level of output pin 3 in about 10V, be equivalent to open charging valve, by resistance R4, diode D2 charges to battery, the voltage that battery fills is once be charged to the voltage that 6 pin set up in advance, chip U1 resets, chip U1 output 3 pin is low level, charging stops, diode D2 prevents storage battery E from discharging to chip U1, resistance R4 is used for carrying out current limliting to the output current of chip U1, prevent defective chip U1, electric capacity C1 is used for carrying out anti-interference filtration to chip U1 pin 5, add the antijamming capability of circuit.
Claims (3)
1. an anti-interference charging circuit, comprise rectification filtering module, chip U1, resistance R1, potentiometer RP1 and potentiometer RP2, it is characterized in that, 220V alternating current is difference contact resistance R1 after rectification filtering module, chip U1 pin 4 and chip U1 pin 8, the resistance R1 other end connects chip U1 pin 1 respectively, electric capacity C1 and chip U1 pin 5, the electric capacity C1 other end connects potentiometer RP1 respectively, potentiometer RP2 and batteries E negative pole, chip U1 pin 3 contact resistance R4, the resistance R4 other end connects diode D2 positive pole, diode D2 negative pole is contact resistance R2 respectively, resistance R3 and batteries E positive pole, the resistance R2 other end connects the potentiometer RP1 other end, potentiometer RP1 slide plate connects chip U1 pin 2, chip U1 pin 6 connects potentiometer RP2 slide plate, potentiometer RP2 other end contact resistance R3.
2. anti-interference charging circuit according to claim 1, is characterized in that, described chip U1 model is NE555.
3. anti-interference charging circuit according to claim 1, is characterized in that, described potentiometer RP1 adjustable extent is 0 ~ 25k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520315029.9U CN204794284U (en) | 2015-05-17 | 2015-05-17 | Anti -interference charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520315029.9U CN204794284U (en) | 2015-05-17 | 2015-05-17 | Anti -interference charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794284U true CN204794284U (en) | 2015-11-18 |
Family
ID=54534262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520315029.9U Expired - Fee Related CN204794284U (en) | 2015-05-17 | 2015-05-17 | Anti -interference charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230080A (en) * | 2016-08-31 | 2016-12-14 | 苏州迈力电器有限公司 | There is the charging circuit of anti-interference function |
-
2015
- 2015-05-17 CN CN201520315029.9U patent/CN204794284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230080A (en) * | 2016-08-31 | 2016-12-14 | 苏州迈力电器有限公司 | There is the charging circuit of anti-interference function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160517 |