CN206060247U - New type of current adjustable band defencive function charging circuit - Google Patents
New type of current adjustable band defencive function charging circuit Download PDFInfo
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- CN206060247U CN206060247U CN201620612273.6U CN201620612273U CN206060247U CN 206060247 U CN206060247 U CN 206060247U CN 201620612273 U CN201620612273 U CN 201620612273U CN 206060247 U CN206060247 U CN 206060247U
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Abstract
The utility model discloses a kind of New type of current adjustable band defencive function charging circuit; including the rechargeable battery set that DC charging input is connected with DC charging input; it is additionally provided with charging indication and the first unilateral diode; charging indication includes the indication LED being in series and first resistor; current regulating circuit and protection circuit are additionally provided with, current regulating circuit includes the first regulator potentiometer, second resistance, the second audion and 3rd resistor.Simple structure of the present utility model, current regulating circuit is provided with, the size for adjusting circuit charging current is can reach, which can adjust charging current as needed so as to substantially increase its scope of application, stability in use is good, improves its suitability and practicality to a certain extent.
Description
Technical field
This utility model is related to charging circuit technical field, and more particularly to a kind of New type of current adjustable band defencive function charges
Circuit.
Background technology
Battery charger is more, and specific battery needs to be equipped with corresponding charging circuit, although which can realize charging
Operation, but its suitability is relatively limited, so being difficult to a certain extent meet the demand in market, adapts to how a circuit
The needs that most of battery charges, can adjust charging current at any time and with overcurrent protection and over-voltage protecting function, and this is just right
Design proposes a great challenge.
Utility model content
In order to solve above-mentioned technical problem, main purpose of the present utility model is to provide a kind of simple structure, uses and stablize
The good New type of current adjustable band defencive function charging circuit of property, which can adjust charging current as needed so as to substantially increase
Its scope of application.
The utility model proposes a kind of New type of current adjustable band defencive function charging circuit, including DC charging input,
The rechargeable battery set being connected with the DC charging input, is additionally provided with charging indication and the first unilateral diode, institute
Indication LED and first resistor that charging indication includes being in series are stated, the charging indication is with rechargeable battery set mutually simultaneously
Connection, first unilateral diode are connected between the positive pole of positive pole and rechargeable battery set of DC charging input, are additionally provided with
Current regulating circuit and protection circuit, the current regulating circuit include the first regulator potentiometer, second resistance, the second audion
And 3rd resistor, after first regulator potentiometer is connected with the second resistance, the other end of regulator potentiometer is connected to direct current
On the positive pole of charging input end, the other end of second resistance be connected on the emitter stage of the second audion, second audion
Base stage be connected on the junction point of indication LED lamp and first resistor, one end of the 3rd resistor is connected to the second audion
Colelctor electrode on, the other end is connected in protection circuit.
The protection circuit include the first audion, the 3rd audion, the 4th audion, the 5th resistance, the 6th resistance, can
Control precision voltage regulator, the second adjustable potentiometer, the second unilateral diode and the 7th resistance, the colelctor electrode of first audion with
The positive pole of DC charging input is connected, and the emitter stage of first audion passes through the 6th resistance and the first unilateral diode
Positive pole be connected, the base stage of first audion is connected with the negative pole of controllable accurate source of stable pressure, and the controllable accurate is steady
The positive pole of potential source connects the negative pole of rechargeable battery set, the second adjustable electric after second adjustable potentiometer and the 5th resistant series
It is electric that the other end of position device is connected between the 6th resistance and the positive pole of the first unilateral diode, another termination of the 5th resistance charges
The negative pole of pond group, the regulation and control end of the controllable accurate source of stable pressure are connected to the junction point of the 5th resistance and the second adjustable potentiometer
On, the colelctor electrode of the 3rd audion is connected with the positive pole of DC charging input, emitter stage is connected to the first audion
Base stage on, base stage be connected with the colelctor electrode of the 4th audion, the other end of the 3rd resistor is connected to the 4th audion
Colelctor electrode on, the emitter stage of the 4th audion connects the negative line of rechargeable battery set, and the base stage of the 4th audion connects
It is connected on the negative pole of the second unilateral diode, the positive pole of second unilateral diode connects the negative pole of rechargeable battery set, the described 7th
Resistance is connected between the positive pole of emitter stage and the second unilateral diode of the 4th audion.
First audion, the 3rd audion and the 4th audion are NPN type triode, and second audion is
PNP type triode.
Simple structure of the present utility model, is provided with current regulating circuit, and current regulating circuit is mainly by adjustable potential
Device coordinate audion composition, its can reach adjust circuit charging current size, its can adjust as needed charging current from
And its scope of application is substantially increased, stability in use is good, improves its suitability and practicality to a certain extent.
Description of the drawings
Fig. 1 is embodiment schematic diagram of the present utility model.
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain this utility model
Utility model.
With reference to Fig. 1, an embodiment of the present utility model is proposed, a kind of New type of current adjustable band defencive function charges electric
Road, including DC charging input 1, the rechargeable battery set 2 being connected with the DC charging input 1, are additionally provided with charging and are referred to
Show circuit 3 and the first unilateral diode D1, the charging indication 3 includes the indication LED being in series and first resistor R1, institute
State charging indication 3 to be in parallel with rechargeable battery set 2, the first unilateral diode D1 is connected to DC charging input 1
Positive pole and the positive pole of rechargeable battery set 2 between, be additionally provided with current regulating circuit 4 and protection circuit 5, the current regulating circuit
4 include the first regulator potentiometer R4, second resistance R2, the second audion Q2 and 3rd resistor R3, first regulator potentiometer
After connecting with second resistance R2 described in R4 the other end of regulator potentiometer R4 be connected on the positive pole of DC charging input 1,
The other end of two resistance R2 is connected on the emitter stage of the second audion Q2, and the base stage of the second audion Q2 is connected to instruction
On the junction point of LED and first resistor R1, one end of 3rd resistor R3 is connected on the colelctor electrode of the second audion Q2,
The other end is connected in protection circuit 5.
The protection circuit 5 include the first audion Q1, the 3rd audion Q3, the 4th audion Q4, the 5th resistance R5,
Six resistance R6, controllable accurate source of stable pressure U1, the second adjustable potentiometer R, the second unilateral diode D2 and the 7th resistance R7, described
The colelctor electrode of one audion Q1 is connected with the positive pole of DC charging input 1, and the emitter stage of the first audion Q1 passes through
6th resistance R6 is connected with the positive pole of the first unilateral diode D1, base stage and the controllable accurate voltage stabilizing of the first audion Q1
The negative pole of source U1 is connected, and the positive pole of the controllable accurate source of stable pressure U1 connects the negative pole of rechargeable battery set 2, second adjustable electric
Position device R connect with the 5th resistance R5 after the other end of the second adjustable potentiometer R to be connected to the 6th resistance R6 unidirectional with first
Between the positive pole of diode D1, the negative pole of another termination rechargeable battery set 2 of the 5th resistance R5, the controllable accurate source of stable pressure U1
Regulation and control end be connected on the junction point of the 5th resistance R5 and the second adjustable potentiometer R, the colelctor electrode of the 3rd audion Q3
It is connected with the positive pole of DC charging input 1, emitter stage is connected in the base stage of the first audion Q1, base stage and the four or three pole
The colelctor electrode of pipe Q4 is connected, and the other end of 3rd resistor R3 is connected on the colelctor electrode of the 4th audion Q4, and described
The emitter stage of four audion Q4 connects the negative line of rechargeable battery set 2, and it is unidirectional that the base stage of the 4th audion Q4 is connected to second
The negative pole of diode D2, the positive pole of the second unilateral diode D2 connect the negative pole of rechargeable battery set 2, and the 7th resistance R7 connects
It is connected between the positive pole of emitter stage and the second unidirectional two pole D2 pipes of the 4th audion Q4.
First audion, the 3rd audion and the 4th audion are NPN type triode, and second audion is
PNP type triode.
Circuit operation principle：
Circuit is input into constant voltage by DC socket and battery is charged, and after accessing D/C voltage, work indication LED lamp
In illuminating state, now audion Q1 and Q3 colelctor electrodes are in high level；Resistance R2, R3, R4, constitute electric current with audion Q2
Regulation/current stabilization circuit, provides base bias voltage for Q3, so that Q1 and Q3 is turned on, unidirectional current passes through resistance R6, diode D1
Battery is charged.
Regulator potentiometer R4, can adjust charging current of the circuit to battery；When charging current is in specified output current
Within when, the pressure drop on resistance R7 is less, is insufficient to allow D2 and Q4 conductings, and charging current still normal work works as charging current
During more than rated current, the voltage increase at R7 two ends makes D2 and Q4 conductings, causes the ducting capacity of Q1 and Q3 to weaken or cut
Only, so as to limiting the further increase of electric current；
With being continuously increased for battery electric quantity, battery both end voltage also gradually increases, when cell voltage reaches the mistake of setting
During pressure protection value, three-terminal voltage-stabilizing pipe U1 starts working, and Q1 base stages is turned on over the ground, weakens the ducting capacity of Q1 or is cut off, from
And also limit the further increase of electric current；Regulator potentiometer R, can adjust the magnitude of voltage of overvoltage protection.
Simple structure of the present utility model, is provided with current regulating circuit, and current regulating circuit is mainly by adjustable potential
Device coordinate audion composition, its can reach adjust circuit charging current size, its can adjust as needed charging current from
And its scope of application is substantially increased, stability in use is good, improves its suitability and practicality to a certain extent.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
The equivalent structure transformation made by every utilization this utility model description and accompanying drawing content, or directly or indirectly it is used in other phases
The technical field of pass, is included in scope of patent protection of the present utility model in the same manner.
Claims (2)
1. a kind of New type of current adjustable band defencive function charging circuit, including DC charging input and the DC charging are defeated
Enter the rechargeable battery set that end is connected, be additionally provided with charging indication and the first unilateral diode, the charging indication bag
The indication LED and first resistor being in series is included, the charging indication is in parallel with rechargeable battery set, described first unidirectional two
Pole pipe is connected between the positive pole of positive pole and rechargeable battery set of DC charging input, it is characterised in that：It is additionally provided with electric current tune
Economize on electricity road and protection circuit, the current regulating circuit include the first regulator potentiometer, second resistance, the second audion and the 3rd
Resistance, first regulator potentiometer connect with the second resistance after the other end of regulator potentiometer to be connected to DC charging defeated
Enter on the positive pole at end, the other end of second resistance is connected on the emitter stage of the second audion, the base stage of second audion
It is connected on the junction point of indication LED lamp and first resistor, one end of the 3rd resistor is connected to the current collection of the second audion
Extremely go up, the other end is connected in protection circuit;The protection circuit include the first audion, the 3rd audion, the 4th audion,
5th resistance, the 6th resistance, controllable accurate source of stable pressure, the second adjustable potentiometer, the second unilateral diode and the 7th resistance, it is described
The colelctor electrode of the first audion is connected with the positive pole of DC charging input, and the emitter stage of first audion passes through the 6th
Resistance is connected with the positive pole of the first unilateral diode, the base stage of first audion and the negative pole phase of controllable accurate source of stable pressure
Connection, the positive pole of the controllable accurate source of stable pressure connect the negative pole of rechargeable battery set, second adjustable potentiometer and the described 5th
After resistant series the other end of the second adjustable potentiometer be connected between the 6th resistance and the positive pole of the first unilateral diode, the 5th
The negative pole of another termination rechargeable battery set of resistance, the regulation and control end of the controllable accurate source of stable pressure is connected to the 5th resistance and second
On the junction point of adjustable potentiometer, the colelctor electrode of the 3rd audion is connected with the positive pole of DC charging input, is launched
Pole is connected in the base stage of the first audion, base stage is connected with the colelctor electrode of the 4th audion, the 3rd resistor it is another
End is connected on the colelctor electrode of the 4th audion, and the emitter stage of the 4th audion connects the negative line of rechargeable battery set, described
The base stage of the 4th audion is connected to the negative pole of the second unilateral diode, and the positive pole of second unilateral diode connects rechargeable battery
The negative pole of group, the 7th resistance are connected between the positive pole of emitter stage and the second unilateral diode of the 4th audion.
2. New type of current adjustable band defencive function charging circuit according to claim 1, it is characterised in that：Described 1st
Pole pipe, the 3rd audion and the 4th audion are NPN type triode, and second audion is PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620612273.6U CN206060247U (en) | 2016-06-21 | 2016-06-21 | New type of current adjustable band defencive function charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620612273.6U CN206060247U (en) | 2016-06-21 | 2016-06-21 | New type of current adjustable band defencive function charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060247U true CN206060247U (en) | 2017-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620612273.6U Active CN206060247U (en) | 2016-06-21 | 2016-06-21 | New type of current adjustable band defencive function charging circuit |
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| CN (1) | CN206060247U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247648A (en) * | 2019-06-27 | 2019-09-17 | 珠海格力电器股份有限公司 | Infrared remote control circuit, control method thereof and infrared remote controller |
| CN112531647A (en) * | 2020-12-10 | 2021-03-19 | 东风汽车集团有限公司 | Linear voltage-stabilized power supply circuit applied to automobile electronic controller |
-
2016
- 2016-06-21 CN CN201620612273.6U patent/CN206060247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247648A (en) * | 2019-06-27 | 2019-09-17 | 珠海格力电器股份有限公司 | Infrared remote control circuit, control method thereof and infrared remote controller |
| CN112531647A (en) * | 2020-12-10 | 2021-03-19 | 东风汽车集团有限公司 | Linear voltage-stabilized power supply circuit applied to automobile electronic controller |
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