CN206977072U - A kind of band overcharges protection and battery status instruction charging circuit - Google Patents
A kind of band overcharges protection and battery status instruction charging circuit Download PDFInfo
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- CN206977072U CN206977072U CN201720466446.2U CN201720466446U CN206977072U CN 206977072 U CN206977072 U CN 206977072U CN 201720466446 U CN201720466446 U CN 201720466446U CN 206977072 U CN206977072 U CN 206977072U
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Abstract
The utility model discloses a kind of band to overcharge protection and battery status instruction charging circuit, including mains electricity input end, the resistance-capacitance depressurization current rectifying and wave filtering circuit being connected with the mains electricity input end, the rechargeable battery being connected with the resistance-capacitance depressurization current rectifying and wave filtering circuit, also include charging control circuit, overcharge protection circuit and bi-colour LED circuit, the charging control circuit includes the first triode, 3rd triode, 4th resistance, 6th resistance, 7th resistance, 3rd unilateral diode and the 11st resistance, the bi-colour LED circuit includes common cathode dual-colored LED lamp, 3rd resistor, tenth resistance, 5th resistance and the 3rd electric capacity.Structure setting of the present utility model is reasonable, and it is provided with overcharge protection circuit and bi-colour LED circuit, the instruction of battery status can be realized by bi-colour LED, stability in use is good and strong applicability, practicality are good.
Description
Technical field
The utility model belongs to charging circuit technical field, and in particular to a kind of band overcharges protection and battery status instruction is filled
Circuit.
Background technology
Portable illumination equipment is widely used among people's daily life, typically built-in rechargeable battery, this kind of to set
Standby to belong to low-end product, charging modes are generally resistance-capacitance depressurization charging more.The most of charging indicator lights of this kind equipment simply allow use
Family knows that charging circuit is working, but whether battery is typically difficult to learn in normal charging condition;It is how double-colored by one
Which kind of state indicator lamp reflection battery is in, and is the technical barrier that those skilled in the art of the present technique need to solve.
The content of the invention
The purpose of this utility model is to provide the band that a kind of structure setting is reasonable and stability in use is good and overcharges protection and electricity
Pond state instruction charging circuit.
The technical scheme for realizing the utility model purpose is that a kind of band overcharges protection and battery status instruction charging circuit, bag
Include mains electricity input end, the resistance-capacitance depressurization current rectifying and wave filtering circuit being connected with the mains electricity input end and the resistance-capacitance depressurization rectification
The rechargeable battery that filter circuit is connected, in addition to charging control circuit, overcharge protection circuit and bi-colour LED circuit, it is described
Charging control circuit includes the first triode, the 3rd triode, the 4th resistance, the 6th resistance, the 7th resistance, the 3rd unidirectional two pole
Pipe and the 11st resistance, the emitter stage of first triode are connected to the output end of resistance-capacitance depressurization current rectifying and wave filtering circuit, current collection
Pole is connected by the 3rd unilateral diode with the positive pole of rechargeable battery and base stage passes through the 6th resistance and the collection of the 3rd triode
Electrode is connected, and the grounded emitter of the 3rd triode and base stage are connected to the positive pole of rechargeable battery by the 7th resistance,
11st resistance is connected between base stage and the ground wire of the 3rd triode, and the 4th resistance is connected to the first triode
Between emitter stage and base stage,
The bi-colour LED circuit includes common cathode dual-colored LED lamp, 3rd resistor, the tenth resistance, the 5th resistance and the
Three electric capacity, the RED lamp positive poles of the common cathode dual-colored LED lamp are connected on overcharge protection circuit by 3rd resistor, GREEN lamps
Positive pole be connected to by the 5th resistance on the colelctor electrode of the first triode and the negative electrode of common cathode dual-colored LED lamp passes through the tenth electricity
Resistance ground connection, the 3rd capacitance connection is between RED lamps positive pole and ground wire.
The overcharge protection circuit includes the second triode, first resistor, second resistance, the first voltage-regulator diode, the 9th
Resistance, the first resistor, the first voltage-regulator diode with being in parallel after the 9th resistant series with resistance-capacitance depressurization current rectifying and wave filtering circuit,
The base stage of second triode is connected on the tie point of the first voltage-regulator diode and the 9th resistance, colelctor electrode passes through the second electricity
Resistance is connected on the emitter stage of the first triode and the grounded emitter of the second triode, the 3rd resistor are connected to the two or three
On the emitter stage of pole pipe.
First triode is PNP type triode, and the second triode and the 3rd triode are NPN type triode.
The utility model has positive effect:Structure setting of the present utility model is reasonable, and it, which is provided with, overcharges protection electricity
Road and bi-colour LED circuit, can realize the instruction of battery status by bi-colour LED, and stability in use is good and suitable
Strong with property, practicality is good.
Brief description of the drawings
In order that content of the present utility model is more likely to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail to the utility model, wherein:
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 shows a kind of embodiment of the present utility model, and wherein Fig. 1 is that circuit structure of the present utility model shows
It is intended to.
See Fig. 1, a kind of band overcharges protection and battery status instruction charging circuit, including mains electricity input end 1 and the civil power
Resistance-capacitance depressurization current rectifying and wave filtering circuit 2 that input 1 is connected, the charging being connected with the resistance-capacitance depressurization current rectifying and wave filtering circuit 2
Battery 3, in addition to charging control circuit 4, overcharge protection circuit 5 and bi-colour LED circuit 6, the charging control circuit 4 wrap
Include the first triode Q1, the 3rd triode Q3, the 4th resistance R4, the 6th resistance R6, the 7th resistance R7, the 3rd unilateral diode D3
With the 11st resistance R11, the emitter stage of the first triode Q1 be connected to the output end of resistance-capacitance depressurization current rectifying and wave filtering circuit 2,
Colelctor electrode is connected by the 3rd unilateral diode D3 with the positive pole of rechargeable battery 3 and base stage passes through the 6th resistance R6 and the three or three
Pole pipe Q3 colelctor electrode is connected, the grounded emitter of the 3rd triode Q3 and base stage is connected to by the 7th resistance R7 and filled
The positive pole of battery 3, the 11st resistance R11 are connected between the 3rd triode Q3 base stage and ground wire, the 4th electricity
Resistance R4 is connected between the first triode Q1 emitter stage and base stage,
The bi-colour LED circuit 6 includes common cathode dual-colored LED lamp LED1,3rd resistor R3, the tenth resistance R10, the
Five resistance R5 and the 3rd electric capacity C3, the RED lamps positive pole of the common cathode dual-colored LED lamp LED1 were connected to by 3rd resistor R3
Fill in protection circuit 5, the positive pole of GREEN lamps is connected to by the 5th resistance R5 on the first triode Q1 colelctor electrode and common cathode
The negative electrode of dual-colored LED lamp is grounded by the tenth resistance R10, and the 3rd electric capacity C3 is connected between RED lamps positive pole and ground wire.
The overcharge protection circuit 5 includes the second triode Q2, first resistor R1, second resistance R2, the pole of the first voltage stabilizing two
Pipe Z1, the 9th resistance R9, the first resistor R1, the first voltage-regulator diode Z1 are whole with resistance-capacitance depressurization after being connected with the 9th resistance R9
Stream filter circuit 2 is in parallel, and the base stage of the second triode Q2 is connected to the first voltage-regulator diode Z1's and the 9th resistance R9
On tie point, colelctor electrode is connected to by second resistance R2 on the first triode Q1 emitter stage and the second triode Q2 transmitting
Pole is grounded, and the 3rd resistor R3 is connected on the second triode Q2 emitter stage.
First triode is PNP type triode, and the second triode and the 3rd triode are NPN type triode.
Its operation principle is summarized as follows:AC civil powers pass through (C1, R8, D1, D2, D4, D5, C2 after resistance-capacitance depressurization arrangement filtering
Form resistance-capacitance depressurization charging module) battery is charged through the first triode Q1, the 3rd unilateral diode D3;Wherein R1, R2,
Z1, R9 and Q2 form overcharge protection circuit module, when cell voltage reaches setting value, Z1 reverse breakdowns, and Q2 conductings, charging limit
R2 and Q2 is flowed through to relate to being put into, so as to reach charging protection function;After battery normally accesses circuit, the remaining electricity of battery passes through R7
With R11 carry out intrinsic standoff ratio, when R11 both end voltages are more than or equal to 0.7V, triode Q3 conducting, Q1 base currents through R6 to,
Q1 is turned on, and circuit charges normal, and now bi-colour LED is red and green portion all normal works, indicator lamp are rendered as yellow;
With the progress of charging, cell voltage constantly rises, and when cell voltage reaches when overcharging protection voltage of setting, Q2 is turned on, and is referred to
Show that lamp RED sector extinguishes, indicator lamp is rendered as green, represents that battery has been filled with;When cell damage, (cell voltage is relatively low, up to not
To setting value) or during battery open circuit, R11 both ends do not have enough voltage to turn on Q3, and now Q1 is also switched off, indicator lamp green portion
Divide and extinguish, red is presented in indicator lamp, represents that battery appearance is abnormal;Adjust R7 and R11 and can adjust the abnormal judgement voltage of battery.
Structure setting of the present utility model is reasonable, and it is provided with overcharge protection circuit and bi-colour LED circuit, Ke Yitong
The instruction that bi-colour LED realizes battery status is crossed, stability in use is good and strong applicability, practicality are good.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.And these belong to the obvious changes or variations that connotation of the present utility model is extended out and still fall within this practicality
New protection domain.
Claims (3)
1. a kind of band overcharge protection and battery status instruction charging circuit, including mains electricity input end, with the mains electricity input end phase
The resistance-capacitance depressurization current rectifying and wave filtering circuit of connection, the rechargeable battery being connected with the resistance-capacitance depressurization current rectifying and wave filtering circuit, its feature
It is:Also include charging control circuit, overcharge protection circuit and bi-colour LED circuit, the charging control circuit includes first
Triode, the 3rd triode, the 4th resistance, the 6th resistance, the 7th resistance, the 3rd unilateral diode and the 11st resistance, it is described
The emitter stage of first triode is connected to the output end of resistance-capacitance depressurization current rectifying and wave filtering circuit, colelctor electrode passes through the 3rd unilateral diode
It is connected with the positive pole of rechargeable battery and base stage is connected by the 6th resistance with the colelctor electrode of the 3rd triode, the described 3rd 3
The grounded emitter of pole pipe and base stage are connected to the positive pole of rechargeable battery by the 7th resistance, and the 11st resistance is connected to
Between the base stage and ground wire of three triodes, the 4th resistance is connected between emitter stage and the base stage of the first triode,
The bi-colour LED circuit includes common cathode dual-colored LED lamp, 3rd resistor, the tenth resistance, the 5th resistance and the 3rd electricity
Hold, the RED lamp positive poles of the common cathode dual-colored LED lamp are connected on overcharge protection circuit by 3rd resistor, GREEN lamps just
Pole is connected to by the 5th resistance on the colelctor electrode of the first triode and the negative electrode of common cathode dual-colored LED lamp is connect by the tenth resistance
Ground, the 3rd capacitance connection is between RED lamps positive pole and ground wire.
2. band according to claim 1 overcharges protection and battery status instruction charging circuit, it is characterised in that:It is described to overcharge
Protection circuit includes the second triode, first resistor, second resistance, the first voltage-regulator diode, the 9th resistance, first electricity
Resistance, the first voltage-regulator diode after the 9th resistant series with resistance-capacitance depressurization current rectifying and wave filtering circuit with being in parallel, second triode
Base stage be connected on the tie point of the first voltage-regulator diode and the 9th resistance, colelctor electrode is connected to the one or three by second resistance
On the emitter stage of pole pipe and the second triode grounded emitter, the 3rd resistor is connected to the emitter stage of the second triode
On.
3. band according to claim 2 overcharges protection and battery status instruction charging circuit, it is characterised in that:Described first
Triode is PNP type triode, and the second triode and the 3rd triode are NPN type triode.
Priority Applications (1)
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CN201720466446.2U CN206977072U (en) | 2017-04-28 | 2017-04-28 | A kind of band overcharges protection and battery status instruction charging circuit |
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CN201720466446.2U CN206977072U (en) | 2017-04-28 | 2017-04-28 | A kind of band overcharges protection and battery status instruction charging circuit |
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Publication Number | Publication Date |
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CN206977072U true CN206977072U (en) | 2018-02-06 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112234680A (en) * | 2020-10-30 | 2021-01-15 | 国网山西省电力公司阳泉供电公司 | Automatic power-off device based on existing insulating charger |
-
2017
- 2017-04-28 CN CN201720466446.2U patent/CN206977072U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112234680A (en) * | 2020-10-30 | 2021-01-15 | 国网山西省电力公司阳泉供电公司 | Automatic power-off device based on existing insulating charger |
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Effective date of registration: 20221228 Address after: 529000 Room 203, Floor 2, Building 1, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Xiaosong Intelligent Technology Co.,Ltd. Address before: 529000 301, Floor 3, Building 2, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN PENGJIANG DISTRICT JINYING TECHNOLOGY Co.,Ltd. |