CN201541143U - Charging current self-adaptive storage battery charger - Google Patents
Charging current self-adaptive storage battery charger Download PDFInfo
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- CN201541143U CN201541143U CN2009201979150U CN200920197915U CN201541143U CN 201541143 U CN201541143 U CN 201541143U CN 2009201979150 U CN2009201979150 U CN 2009201979150U CN 200920197915 U CN200920197915 U CN 200920197915U CN 201541143 U CN201541143 U CN 201541143U
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Abstract
The utility model discloses a charging current self-adaptive storage battery charger, which comprises a power transformer T, diodes (VD1, VD2, VD3, VD4, VD5 and VD6), transistors (V1 and V2), a three-terminal integrated voltage stabilizer IC1, a comparator integrated circuit IC2, resistors (R1, R2, R3, R4, R5, R6, R7, R8 and R9), a potentiometer RP1, and capacitors (C1 and C2). The charging current self-adaptive storage battery charger can automatically adjust working condition according to electric quantity of a storage battery. When the storage battery is low in power, the charger charges with large current; when being charged up, the battery can also charge with small current of dozens of milliamps; and excessive charging or insufficient charging can be avoided, thereby facilitating prolonging the service life of the storage battery.
Description
Technical field
The utility model relates to a kind of battery charger, particularly relates to the adaptive battery charger of a kind of charging current.
Background technology
At present, the scope of application of storage battery is more and more wider, use amount is also increasing, the battery charger that has occurred multiple brand on the market, these chargers are only exported constant electric current storage battery are charged, and can not adjust the size of charging current automatically according to what variation of accumulator electric-quantity, often occur overcharging or the phenomenon of undercharge.
Summary of the invention
The purpose of this utility model is the problems referred to above of existing in the technical solution to provide a kind of charging current adaptive battery charger.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
The adaptive battery charger of a kind of charging current of the present utility model, it comprises power transformer T, diode (VD1, VD2, VD3, VD4, VD5, VD6), transistor (V1, V2), three terminal integrated voltage stabilizer IC1, comparator integrated circuit (IC) 2, resistance (R1, R2, R3, R4, R5, R6, R7, R8, R9), potentiometer RP1, electric capacity (C1, C2).
Described power transformer T is that power 15～20W, secondary voltage are the voltage dropping power supply transformer of 12V.
The model of described three terminal integrated voltage stabilizer IC1 is LM7812, and the model of comparator integrated circuit (IC) 2 is LLM339.
Described transistor V1 is that model is the silicon PNP transistor of S9013, and transistor V2 is that model is the low-frequency power transistor of 3AD30.
The utlity model has following beneficial effect:
The utility model can be adjusted operating state automatically according to the electric weight of storage battery, and when accumulator electric-quantity was not enough, charger was with large current charge, behind full charge, still with tens milliamperes low current charge, can not occur overcharging or the undercharge phenomenon, help prolonging the useful life of storage battery.
Description of drawings
Fig. 1 is the circuit diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
With reference to Fig. 1, the adaptive battery charger of a kind of charging current of the present utility model, it comprises power transformer T, diode (VD1, VD2, VD3, VD4, VD5, VD6), transistor (V1, V2), three terminal integrated voltage stabilizer IC1, comparator integrated circuit (IC) 2, resistance (R1, R2, R3, R4, R5, R6, R7, R8, R9), potentiometer RP1, electric capacity (C1, C2).Described power transformer T is that power 15～20W, secondary voltage are the voltage dropping power supply transformer of 12V, the model of described three terminal integrated voltage stabilizer IC1 is LM7812, the model of comparator integrated circuit (IC) 2 is LLM339, described transistor V1 is that model is the silicon PNP transistor of S9013, and transistor V2 is that model is the low-frequency power transistor of 3AD30.
Diode (VD1, VD2, VD3, VD4) is connected in series end to end successively, form rectifier bridge, the input termination 220V civil power of power transformer T, output is connected on the ac input end of rectifier bridge, be between the negative electrode of the negative electrode of VD1 and VD3, capacitor C 1 is connected between the negative electrode of the anode of VD3 and VD4, and 1 pin of three terminal integrated voltage stabilizer IC1 connects the negative electrode of VD4,2 foot meridian capacitor C2 connect the negative pole end of storage battery GB, and 3 pin also connect the negative pole end of storage battery GB.Output 2 pin of IC1, the one tunnel connects the negative pole end of storage battery GB through resistance R 1, potentiometer RP1 and resistance R 2, and one the tunnel connects 3 pin of comparator integrated circuit (IC) 2, and another road connects 2 pin of IC2 through resistance R 4.2 pin of IC2 connect the base stage of transistor V1 through resistance R 6, and 4 pin are connected between resistance R 3 and the R5, and 5 pin connect the centre cap of potentiometer RP1, and 12 pin connect the negative pole end of GB.The collector electrode of the V1 series circuit that one tunnel base stage that meets V2, another road are formed through VD5 and VD6 after resistance R 7 connects the negative electrode of VD2, the emitter of V2 connects the negative electrode of VD2 through R8, and the collector electrode series circuit that one tunnel positive terminal that meets GB, another road are formed through R5 and R3 after resistance R 9 connects the negative pole end of GB.
Power transformer T, diode (VD1, VD2, VD3, VD4, VD5, VD6), three terminal integrated voltage stabilizer IC1, transistor (V1, V2), electric capacity (C1, C2) and resistance (R6, R7, R8, R9) are formed charging circuit, and comparator integrated circuit (IC) 2, potentiometer RP1 and resistance (R1, R2, R3, R4, R5) are formed automatic control circuit.
Operation principle of the present utility model: alternating current 220V voltage becomes direct current 12V voltage through T step-down and VD1～VD4 rectification, this voltage is divided into three the tunnel: the one tunnel and adds to the emitter of transistor V2 through resistor R 8 after capacitor C 1 filtering, one the tunnel adds to the base stage of V2 through diode VD5 and VD6, IC2 and V1 are supplied with in another road after three terminal integrated voltage stabilizer IC1 voltage stabilizing.When the voltage that is recharged storage battery GB is less than or equal to 12V, the voltage of in-phase input end 5 pin of IC2 is less than or equal to 6V, the voltage of its inverting input 4 pin is lower than 5 pin voltages, so output 2 pin of IC2 output high level, make the V1 conducting, V2 is in magnifying state, makes storage battery GB be in the large current charge state.When the charging voltage of GB is higher than 12V, the 5 pin voltages of IC2 will be higher than 6V, and be lower than 4 pin voltages, its 2 pin output low level, V1 and V2 are all ended, but this moment the collector electrode of V2 and emitter between still have leakage current about 40mA, can keep low current charge to storage battery GB.
Claims (4)
1. adaptive battery charger of charging current, it comprises power transformer T, diode (VD1, VD2, VD3, VD4, VD5, VD6), transistor (V1, V2), three terminal integrated voltage stabilizer IC1, comparator integrated circuit (IC) 2, resistance (R1, R2, R3, R4, R5, R6, R7, R8, R9), potentiometer RP1, electric capacity (C1, C2), it is characterized in that: diode (VD1, VD2, VD3, VD4) be connected in series successively end to end, form rectifier bridge, the input termination 220V civil power of power transformer T, output is connected on the ac input end of rectifier bridge, be between the negative electrode of the negative electrode of VD1 and VD3, capacitor C 1 is connected between the negative electrode of the anode of VD3 and VD4,1 pin of three terminal integrated voltage stabilizer IC1 connects the negative electrode of VD4,2 foot meridian capacitor C2 connect the negative pole end of storage battery GB, and 3 pin also connect the negative pole end of storage battery GB.Output 2 pin of IC1, the one tunnel connects the negative pole end of storage battery GB through resistance R 1, potentiometer RP1 and resistance R 2, and one the tunnel connects 3 pin of comparator integrated circuit (IC) 2, and another road connects 2 pin of IC2 through resistance R 4.2 pin of IC2 connect the base stage of transistor V1 through resistance R 6, and 4 pin are connected between resistance R 3 and the R5, and 5 pin connect the centre cap of potentiometer RP1, and 12 pin connect the negative pole end of GB.The collector electrode of the V1 series circuit that one tunnel base stage that meets V2, another road are formed through VD5 and VD6 after resistance R 7 connects the negative electrode of VD2, the emitter of V2 connects the negative electrode of VD2 through R8, and the collector electrode series circuit that one tunnel positive terminal that meets GB, another road are formed through R5 and R3 after resistance R 9 connects the negative pole end of GB.
2. as the adaptive battery charger of right 1 described a kind of charging current, it is characterized in that described power transformer T is that power 15～20W, secondary voltage are the voltage dropping power supply transformer of 12V.
3. as the adaptive battery charger of right 1 described a kind of charging current, it is characterized in that the model of described three terminal integrated voltage stabilizer IC1 is LM7812, the model of comparator integrated circuit (IC) 2 is LLM339.
4. as the adaptive battery charger of right 1 described a kind of charging current, it is characterized in that described transistor V1 is that model is the silicon PNP transistor of S9013, transistor V2 is that model is the low-frequency power transistor of 3AD30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201979150U CN201541143U (en) | 2009-09-28 | 2009-09-28 | Charging current self-adaptive storage battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201979150U CN201541143U (en) | 2009-09-28 | 2009-09-28 | Charging current self-adaptive storage battery charger |
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| Publication Number | Publication Date |
|---|---|
| CN201541143U true CN201541143U (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201979150U Expired - Fee Related CN201541143U (en) | 2009-09-28 | 2009-09-28 | Charging current self-adaptive storage battery charger |
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| CN (1) | CN201541143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157976A (en) * | 2011-04-28 | 2011-08-17 | 福建农林大学 | Battery charging circuit of electric bicycle capable of identifying voltage |
| CN106655419A (en) * | 2016-10-20 | 2017-05-10 | 广西大学 | Safe charge circuit for emergency lamp battery |
-
2009
- 2009-09-28 CN CN2009201979150U patent/CN201541143U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157976A (en) * | 2011-04-28 | 2011-08-17 | 福建农林大学 | Battery charging circuit of electric bicycle capable of identifying voltage |
| CN106655419A (en) * | 2016-10-20 | 2017-05-10 | 广西大学 | Safe charge circuit for emergency lamp battery |
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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: 20100804 Termination date: 20110928 |