CN105375562B - A kind of constant current voltage limiting formula lithium battery charger - Google Patents

A kind of constant current voltage limiting formula lithium battery charger Download PDF

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Publication number
CN105375562B
CN105375562B CN201510727004.4A CN201510727004A CN105375562B CN 105375562 B CN105375562 B CN 105375562B CN 201510727004 A CN201510727004 A CN 201510727004A CN 105375562 B CN105375562 B CN 105375562B
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China
Prior art keywords
resistance
amplifier
triode
lithium battery
connect
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CN201510727004.4A
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Chinese (zh)
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CN105375562A (en
Inventor
赵钧宇
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Nantong Hualong microelectronics Limited by Share Ltd
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Yueqing Huazun Electric Co Ltd
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Priority to CN201510727004.4A priority Critical patent/CN105375562B/en
Priority to CN201710972102.3A priority patent/CN107681724A/en
Publication of CN105375562A publication Critical patent/CN105375562A/en
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    • H02J7/0077
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits

Abstract

The invention discloses a kind of constant current voltage limiting formula lithium battery charger, including triode T1, resistance R1, amplifier U1, resistance R10, electric capacity C6 and potentiometer RP1, resistance R10 one end connects power supply VCC and triode T1 emitter stages respectively, triode T1 base stages distinguish connecting triode T2 emitter stages and electric capacity C6, the electric capacity C6 other ends distinguish connecting triode T3 colelctor electrodes and resistance R1, resistance R1 other end connecting triode T2 base stages, triode T2 colelctor electrodes distinguish connecting triode T1 colelctor electrodes, resistance R2 and diode D6 positive poles, the resistance R2 other ends connect resistance R3 and diode D4 negative poles respectively, diode D4 positive poles connect resistance R4 and are grounded.Constant current voltage limiting formula lithium battery charger of the present invention, circuit structure is simple, and safety and stability, small volume, cost is low, is especially suitable for promoting the use of.

Description

A kind of constant current voltage limiting formula lithium battery charger
Technical field
The present invention relates to a kind of lithium battery charger, specifically a kind of constant current voltage limiting formula lithium battery charger.
Background technology
Lithium battery as it is a kind of can be with the power store of Reusability, using very extensive, but lithium battery makes Whether often overcharge with it that relation is very big with the life-span, frequent overcharge, can high degree shorten life-span of lithium battery, it is existing Some lithium battery charging circuits are complicated, and cost is high, and it is single function to be present, the shortcomings of without charge protection etc..
The content of the invention
It is an object of the invention to provide a kind of constant current voltage limiting formula lithium battery charger, to solve to carry in above-mentioned background technology The problem of going out.
To achieve the above object, the present invention provides following technical scheme:
A kind of constant current voltage limiting formula lithium battery charger, including triode T1, resistance R1, amplifier U1, resistance R10, electric capacity C6 With potentiometer RP1, described resistance R10 one end connects power supply VCC and triode T1 emitter stages respectively, and triode T1 base stages connect respectively Triode T2 emitter stages and electric capacity C6 are connect, electric capacity C6 other ends difference connecting triode T3 colelctor electrodes and resistance R1, resistance R1 are another One end connecting triode T2 base stages, triode T2 colelctor electrodes difference connecting triode T1 colelctor electrodes, resistance R2 and diode D6 are just Pole, the resistance R2 other ends connect resistance R3 and diode D4 negative poles respectively, and diode D4 positive poles connection resistance R4 is simultaneously grounded, resistance The R4 other ends connect the resistance R3 other ends, resistance R7 and amplifier U3 in-phase ends respectively, and amplifier U3 end of oppisite phase connects resistance R5 respectively With potentiometer RP1 one end, the potentiometer RP1 other ends connect power supply VCC, light emitting diode D7 positive poles and amplifier U4 power supplys respectively End, light emitting diode D7 negative poles connection resistance R13, resistance R13 other ends connection amplifier U4 output ends, amplifier U4 in-phase ends difference The connection resistance R5 other ends and resistance R6, resistance the R6 other end connection amplifier U4 earth terminals are simultaneously grounded, the potentiometer RP1 slide plates By resistance R8 connection amplifier U1 in-phase ends, amplifier U1 end of oppisite phase connects the resistance R7 other ends and resistance R9 respectively, and resistance R9 is another One end connects the resistance R10 other ends, diode D5 positive poles, electric capacity C5, amplifier U1 output ends, amplifier U2 output ends, resistance respectively R14 and electric capacity C4, diode D5 negative pole connect resistance R11 and triode T3 base stages respectively, and the resistance R11 other ends connect electricity respectively Hold the C5 other ends and triode T3 emitter stages and be grounded, the amplifier U3 output ends connect resistance R19 and triode T4 bases respectively Pole, the resistance R19 other ends connect power supply VCC, resistance R18 and resistance R17, resistance R18 other end connecting triode T4 collection respectively Electrode, it is anti-phase that triode T4 emitter stages connect grounding resistance R16, the resistance R17 other ends and amplifier U2 in-phase ends, amplifier U2 respectively End connects resistance R15, the resistance R14 other ends and the electric capacity C4 other ends, the resistance R15 other ends and connects grounding resistance respectively respectively R12 and lithium battery E negative poles, lithium battery E cathode connecting diode D6 negative poles.
As the further scheme of the present invention:Described amplifier U1, U2, U3 and U4 use LM339.
As further scheme of the invention:The power supply VCC voltages are 12V.
Compared with prior art, the beneficial effects of the invention are as follows:Constant current voltage limiting formula lithium battery charger of the present invention, circuit knot Structure is simple, and safety and stability, small volume, cost is low, is especially suitable for promoting the use of.
Brief description of the drawings
Fig. 1 is the circuit diagram of constant current voltage limiting formula lithium battery charger.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of constant current voltage limiting formula lithium battery charger, including triode T1, resistance R1, amplifier U1, resistance R10, electric capacity C6 and potentiometer RP1, resistance R10 one end connect power supply VCC and triode T1 transmittings respectively Pole, triode T1 base stages difference connecting triode T2 emitter stages and electric capacity C6, electric capacity the C6 other end difference connecting triode T3 collection Electrode and resistance R1, resistance R1 other end connecting triode T2 base stages, triode T2 colelctor electrodes difference connecting triode T1 current collections Pole, resistance R2 and diode D6 positive poles, the resistance R2 other ends connect resistance R3 and diode D4 negative poles, diode D4 positive poles respectively Connection resistance R4 is simultaneously grounded, and the resistance R4 other ends connect the resistance R3 other ends, resistance R7 and amplifier U3 in-phase ends, amplifier U3 respectively End of oppisite phase connects resistance R5 and potentiometer RP1 one end respectively, and the potentiometer RP1 other ends connect power supply VCC, light emitting diode respectively D7 positive poles and amplifier U4 power ends, light emitting diode D7 negative poles connection resistance R13, the connection amplifier U4 outputs of the resistance R13 other ends End, amplifier U4 in-phase ends connect the resistance R5 other ends and resistance R6 respectively, and resistance R6 other ends connection amplifier U4 earth terminals simultaneously connect Ground, potentiometer RP1 slide plates by resistance R8 connection amplifier U1 in-phase ends, amplifier U1 end of oppisite phase connect respectively the resistance R7 other ends and Resistance R9, resistance the R9 other end connect the resistance R10 other ends, diode D5 positive poles, electric capacity C5, amplifier U1 output ends, fortune respectively U2 output ends, resistance R14 and electric capacity C4 are put, diode D5 negative poles connect resistance R11 and triode T3 base stages, resistance R11 respectively The other end connects the electric capacity C5 other ends and triode T3 emitter stages and is grounded respectively, and amplifier U3 output ends connect resistance R19 respectively With triode T4 base stages, the resistance R19 other ends connect power supply VCC, resistance R18 and resistance R17 respectively, and the resistance R18 other ends connect Triode T4 colelctor electrodes are connect, triode T4 emitter stages connect grounding resistance R16, the resistance R17 other ends and the same phases of amplifier U2 respectively End, amplifier U2 end of oppisite phase connect resistance R15, the resistance R14 other ends and the electric capacity C4 other ends, resistance R15 other ends difference respectively Connect grounding resistance R12 and lithium battery E negative poles, lithium battery E cathode connecting diode D6 negative poles.
Amplifier U1, U2, U3 and U4 use LM339.
Power supply VCC voltages are 12V.
The present invention operation principle be:When lithium battery E voltages are relatively low, charger operation safeguards charged state in low current Under, operation principle is that U3 in-phase ends current potential is less than end of oppisite phase, U3 output low potentials, and T4 ends, U2 in-phase ends current potential about 0.18V, Now charging current about 250mA, constant-current circuit are made up of R14, U2, T1 and its perimeter circuit;As charging continues, lithium electricity Pond E voltages are gradually risen, and when lithium battery E voltages are more than 9V, charger is transferred under high current fast charge pattern, U3 in-phase end current potentials Higher than end of oppisite phase, U3 output high potentials, T4 conductings, U2 in-phase end current potentials are about 0.48V, and charger constant output about 1A electric currents are given Lithium battery E charges;When lithium battery E is close to full charge, charger is transferred under pressure limiting floating charge state automatically, charging current now Can be by being gradually reduced under quick-charge state, to the complete full charges of lithium battery E, charging current is only 10~30mA, to mend Fill the electricity that lithium battery E loses by self discharge.
This circuit is provided with reversed polarity protection circuit, is made up of D4, U3, U2, T1 and peripheral cell, when lithium battery E reversal connections, Accident will not occur for charger limitation output current, and charging instruction is made up of U4, D7 and peripheral cell, and during charging, D7 is lighted, and is filled After electrical equipment enters floating charge state, D7 extinguishes, and represents that charging terminates.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It is appreciated that other embodiment.

Claims (1)

1. a kind of constant current voltage limiting formula lithium battery charger, including triode T1, resistance R1, amplifier U1, resistance R10, electric capacity C6 and Potentiometer RP1, it is characterised in that described resistance R10 one end connects power supply VCC and triode T1 emitter stages, triode T1 respectively Base stage distinguishes connecting triode T2 emitter stages and electric capacity C6, electric capacity the C6 other end difference connecting triode T3 colelctor electrodes and resistance R1, resistance R1 other end connecting triode T2 base stages, triode T2 colelctor electrodes difference connecting triode T1 colelctor electrodes, resistance R2 and Diode D6 positive poles, the resistance R2 other ends connect resistance R3 and diode D4 negative poles, diode D4 positive poles connection resistance R4 respectively And be grounded, the resistance R4 other ends connect the resistance R3 other ends, resistance R7 and amplifier U3 in-phase ends, amplifier U3 end of oppisite phase difference respectively Connection resistance R5 and potentiometer RP1 one end, the potentiometer RP1 other ends connect power supply VCC, light emitting diode D7 positive poles and fortune respectively U4 power ends, light emitting diode D7 negative poles connection resistance R13 are put, the resistance R13 other ends connect amplifier U4 output ends, and amplifier U4 is same Phase end connects the resistance R5 other ends and resistance R6 respectively, and resistance R6 other ends connection amplifier U4 earth terminals are simultaneously grounded, the current potential Device RP1 slide plates connect the resistance R7 other ends and resistance R9 respectively by resistance R8 connection amplifier U1 in-phase ends, amplifier U1 end of oppisite phase, The resistance R9 other ends connect the resistance R10 other ends, diode D5 positive poles, electric capacity C5, amplifier U1 output ends, amplifier U2 outputs respectively End, resistance R14 and electric capacity C4, diode D5 negative pole connect resistance R11 and triode T3 base stages, the resistance R11 other ends point respectively The electric capacity C5 other ends and triode T3 emitter stages and it Lian Jie not be grounded, the amplifier U3 output ends connect resistance R19 and three respectively Pole pipe T4 base stages, the resistance R19 other ends connect power supply VCC, resistance R18 and resistance R17, resistance R18 other ends connection three respectively Pole pipe T4 colelctor electrodes, triode T4 emitter stages connect grounding resistance R16, the resistance R17 other ends and amplifier U2 in-phase ends respectively, fortune Put U2 end of oppisite phase and connect resistance R15, the resistance R14 other ends and the electric capacity C4 other ends respectively, the resistance R15 other ends connect respectively to be connect Ground resistance R12 and lithium battery E negative poles, lithium battery E cathode connecting diode D6 negative poles;
Described amplifier U1, U2, U3 and U4 use LM339;The power supply VCC voltages are 12V;
When the lithium battery E voltages are relatively low, amplifier U3 in-phase ends current potential is less than end of oppisite phase, amplifier U3 output low potentials, three poles Pipe T4 ends, amplifier U2 in-phase end current potential 0.18V, now charging current 250mA;As charging continues, lithium battery E voltages are gradual Rise, when lithium battery E voltages are more than 9V, amplifier U3 in-phase ends current potential is higher than end of oppisite phase, amplifier U3 output high potentials, triode T4 is turned on, and amplifier U2 in-phase ends current potential is 0.48V, and charger constant output 1A electric currents charge to lithium battery E;When lithium battery E is complete After full full charge, charging current is 10~30mA, to supplement the electricity that lithium battery E loses by self discharge.
CN201510727004.4A 2015-10-28 2015-10-28 A kind of constant current voltage limiting formula lithium battery charger Active CN105375562B (en)

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CN113904453B (en) * 2021-10-08 2023-10-27 重庆电哥科技(集团)有限公司 Backup type energy storage parallel operation system and control method thereof
CN116231814B (en) * 2023-05-09 2023-07-21 西安交通大学医学院第一附属医院 Battery pack safety control method and system and electric anastomat thereof

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CN2188818Y (en) * 1994-01-31 1995-02-01 清华大学 Full-automatic control constant-voltage and constant current-limiting electronic charger
CN100505473C (en) * 2006-03-15 2009-06-24 张晓云 Solar energy lighting emergency system
JP2013126325A (en) * 2011-12-15 2013-06-24 Panasonic Eco Solutions Power Tools Co Ltd Charging circuit
CN205123330U (en) * 2015-10-28 2016-03-30 邹小辉 Constant current voltage limiting formula lithium batteries ware

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Inventor after: Zhao Junyu

Inventor before: Zou Xiaohui

TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20171204

Address after: East Street Fortunearia hole village in Yueqing city of Zhejiang Province in 325600

Applicant after: Yueqing Huazun Electric Co., Ltd.

Address before: 516000 Baiyun District, Guangdong City, Huizhou Province town of fresh water on the road two

Applicant before: Zou Xiaohui

GR01 Patent grant
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TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20190620

Address after: 226000 West Group 8 of Sun Liqiao Village, Xingdong Town, Tongzhou District, Nantong City, Jiangsu Province

Patentee after: Nantong Hualong microelectronics Limited by Share Ltd

Address before: 325600 Yueqing City, Zhejiang Province, Chengdong street, Niu nose Cave Village

Patentee before: Yueqing Huazun Electric Co., Ltd.