CN101807805B - Charging management circuit and power supply adapting device - Google Patents
Charging management circuit and power supply adapting device Download PDFInfo
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- CN101807805B CN101807805B CN201010137356A CN201010137356A CN101807805B CN 101807805 B CN101807805 B CN 101807805B CN 201010137356 A CN201010137356 A CN 201010137356A CN 201010137356 A CN201010137356 A CN 201010137356A CN 101807805 B CN101807805 B CN 101807805B
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Abstract
The invention is applicable to the battery power supply equipment technical filed and provides a charging management circuit and a power supply adapting device; wherein the charging management circuit comprises a boosting/reducing unit, a voltage detection unit and a control unit. In the invention, the charging management circuit regulates the charging voltage output by the power supply adapter to be voltage matched with saturation voltage of rechargeable battery, thus the charging voltage output by the power supply adapter is effectively expanded, and the power supply adaptor can cause the battery to be full of power even the charging voltage output by the power supply adapter is less than the saturation voltage of rechargeable battery.
Description
Technical field
The invention belongs to the technical field of battery supply set, relate in particular to a kind of charge management circuit and power supply adapting device.
Background technology
Power supply adaptor is the power supply conversion equipment of portable electric appts, generally is made up of shell, power transformer and rectification circuit, can be divided into by its output type exchanging output type and direct current output type; Can be divided into Direct Plug-In and Table top type by connected mode.
In daily life, when people charge at the rechargeable battery to portable electric appts, can between power supply and rechargeable battery, be connected with power supply adaptor usually, power supply adaptor is changed back output charging voltage with supply voltage and is given rechargeable battery.
Usually; Power supply adaptor generally all is a fixed value to the charging voltage of rechargeable battery output, and the cell voltage of rechargeable battery is constantly to change in the process of charging, when battery charge is saturated; The battery voltage is a saturation voltage; But when the charging voltage of power supply adaptor output during less than the saturation voltage of rechargeable battery, the electric weight of rechargeable battery just can not be filled.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of charge management circuit, is intended to solve the problem that the charging voltage of present power supply adaptor output can't be complementary with the saturation voltage of rechargeable battery.
The embodiment of the invention is achieved in that a kind of charge management circuit, and said charge management circuit comprises:
Input is connected with the output of power supply adaptor, the lifting/voltage reducing unit that output is connected with rechargeable battery;
Input is connected with said rechargeable battery, and to the voltage detection unit that charging voltage detects, said voltage detection unit is made up of the resistance that is serially connected between said rechargeable battery and the ground; And
The output of the said voltage detection unit of input termination; The control end of the said lifting/voltage reducing of output termination unit; According to the saturation voltage of said charging voltage and prevision, control said lifting/voltage reducing unit and regulate the charging voltage of said power supply adaptor output and the control unit that saturation voltage is complementary;
Said charge management circuit also comprises:
Be connected the charging current detecting unit between said lifting/voltage reducing unit, rechargeable battery and the control unit; The input of said charging current detecting unit is connected with the output of said lifting/voltage reducing unit, and the output of said charging current detecting unit is connected with the input of said control unit;
Between the input of the output of said power supply adaptor and lifting/voltage reducing unit, be connected with the counnter attack that the polarity of the polarity that prevents said power supply adaptor and rechargeable battery is not complementary and insert the unit;
Between the input of the output of said lifting/voltage reducing unit and charging current detecting unit, be connected with rectification filtering unit; Said rectification filtering unit comprises two electric capacity and a diode; The anode of said diode connects the output of said lifting/voltage reducing unit; The negative electrode of said diode connects the input of said charging current detecting unit, and said two electric capacity are connected between the negative electrode and ground of said diode;
Said charging current detecting unit comprises:
Current sensing resistor, first division module, second division module and differential amplifier;
First end of said current sensing resistor is as the output of the said lifting/voltage reducing of the input termination unit of charging current detecting unit; The said rechargeable battery of second termination of said current sensing resistor; First end of the said current sensing resistor of input termination of said first division module; The inverting input of the said differential amplifier of output termination of said first division module, second end of the said current sensing resistor of input termination of said second division module, the in-phase input end of the said differential amplifier of output termination of said second division module; The input of the said control unit of output termination of said differential amplifier; Said control unit adopts control chip, is specially second input of the output termination control chip of said differential amplifier.
Another purpose of the embodiment of the invention is to provide a kind of power supply adapting device, and said power supply adapting device comprises power supply adaptor and above-mentioned charge management circuit.
In embodiments of the present invention; This charge management circuit is adjusted to the voltage that the saturation voltage with rechargeable battery is complementary with the charging voltage of power supply adaptor output; Make the charging voltage of power supply adaptor output obtain expansion effectively like this; Power supply adaptor just can be because of the charging voltage of its output saturation voltage less than rechargeable battery, and can not battery electric quantity be full of.
Description of drawings
Fig. 1 is the structure chart of the charge management circuit that provides of the embodiment of the invention;
Fig. 2 is the examples of circuits figure of the charge management circuit that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the structure of the charge management circuit that the embodiment of the invention provides.
Charge management circuit comprises lifting/voltage reducing unit 100, voltage detection unit 200 and control unit 300.
The input of lifting/voltage reducing unit 100 is connected with the output of power supply adaptor, and output is connected with rechargeable battery;
The input of voltage detection unit 200 is connected with rechargeable battery, and charging voltage is detected;
The output of the input termination voltage detection unit 200 of control unit 300; The control end of the output termination lifting/voltage reducing unit 100 of control unit 300; According to the saturation voltage of charging voltage and prevision, charging voltage and saturation voltage that power supply adaptor output is regulated in control unit 300 control lifting/voltage reducing unit 100 are complementary.
As one embodiment of the invention, charge management circuit also comprises:
Be connected the charging current detecting unit 400 between lifting/voltage reducing unit 100, rechargeable battery and the control unit 300; The input of charging current detecting unit 400 is connected with the output of lifting/voltage reducing unit 100, and the output of charging current detecting unit 400 is connected with the input of control unit 300.
Between the input of the output of power supply adaptor and lifting/voltage reducing unit 100, be connected with the counnter attack that the polarity of the polarity that prevents power supply adaptor and rechargeable battery is not complementary and insert unit 500.
Between the input of the output of lifting/voltage reducing unit 100 and charging current detecting unit 400, be connected with rectification filtering unit 600.
Fig. 2 shows the exemplary circuit structure of the charge management circuit that the embodiment of the invention provides.
As one embodiment of the invention, lifting/voltage reducing unit 100 comprises:
The input of boost module 101 is as the control termination control unit 300 of lifting/voltage reducing unit 100; The output of boost module 101 connects the input of first driver module 102 and the input of second driver module 103 respectively; The control end of output termination first switch module 104 of first driver module 102; The control end of the output termination second switch module 105 of second driver module 103; The input of first switch module 104 is inserted the output that unit 500 connects power supply adaptor, first end of the output termination energy-storage module 106 of first switch module 104, second end of the input termination energy-storage module 106 of second switch module 105 as the input of lifting/voltage reducing unit 100 through counnter attack; Second end of energy-storage module 106 is as the output of lifting/voltage reducing unit 100, the output head grounding of second switch module 105.
As one embodiment of the invention; Boost module 101 is comparator U1; The first comparison negative input end IN1-of comparator U1 connects control unit 300, and second of comparator U1 compares negative input end IN2-and connects control unit 300, and first of comparator U1 compares positive input terminal IN1+ and the second comparison positive input terminal IN2+ connects fixed voltage simultaneously; The first output OUT1 of comparator U1 connects the input of first driver module 102, and the second output OUT2 of comparator U1 connects the input of second driver module 103;
Energy-storage module 106 is an inductance L 1, the drain electrode of first termination, the first metal-oxide-semiconductor Q5 of inductance L 1, the drain electrode of second termination, the second metal-oxide-semiconductor Q6 of inductance L 1.
As one embodiment of the invention; Control unit 300 adopts control chip U2; The first input end I/O1 of control chip U2 connects the output of voltage detection unit 200; The first output PWM1 of control chip U2 meets first of comparator U1 and compares negative input end IN1-, and the second output PWM2 of control chip U2 and the 3rd output PWM3 meet second of comparator U1 and compare negative input end IN2-.
As one embodiment of the invention, charging current detecting unit 400 comprises:
Current sensing resistor 401, first division module 402, second division module 403 and differential amplifier 404;
First end of current sensing resistor 401 connects the output of lifting/voltage reducing unit 100 through rectification filtering unit 600 as the input of charging current detecting unit 400; The second termination rechargeable battery of current sensing resistor 401; First end of the input termination current sensing resistor 401 of first division module 402; The inverting input of the output termination differential amplifier 404 of first division module 402; Second end of the input termination current sensing resistor 401 of second division module 403, the in-phase input end of the output termination differential amplifier 404 of second division module 403, the input of the output termination control unit 300 of differential amplifier 404; Be specially the second input I/O2 of the output termination control chip U2 of differential amplifier 404.
The course of work of this charge management circuit is:
The charging preparatory stage:
Charging is carried out the stage:
The embodiment of the invention also provides a kind of power supply adapting device, and power supply adapting device comprises power supply adaptor and above-mentioned charge management circuit.
In embodiments of the present invention; This charge management circuit is adjusted to the voltage that the saturation voltage with rechargeable battery is complementary with the charging voltage of power supply adaptor output; Make the charging voltage of power supply adaptor output obtain expansion effectively like this; Power supply adaptor just can be because of the charging voltage of its output saturation voltage less than rechargeable battery, and can not battery electric quantity be full of.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a charge management circuit is characterized in that, said charge management circuit comprises:
Input is connected with the output of power supply adaptor, the lifting/voltage reducing unit that output is connected with rechargeable battery;
Input is connected with said rechargeable battery, and to the voltage detection unit that charging voltage detects, said voltage detection unit is made up of the resistance that is serially connected between said rechargeable battery and the ground; And
The output of the said voltage detection unit of input termination; The control end of the said lifting/voltage reducing of output termination unit; According to the saturation voltage of said charging voltage and prevision, control said lifting/voltage reducing unit and regulate the charging voltage of said power supply adaptor output and the control unit that saturation voltage is complementary;
Said charge management circuit also comprises:
Be connected the charging current detecting unit between said lifting/voltage reducing unit, rechargeable battery and the control unit; The input of said charging current detecting unit is connected with the output of said lifting/voltage reducing unit, and the output of said charging current detecting unit is connected with the input of said control unit;
Between the input of the output of said power supply adaptor and lifting/voltage reducing unit, be connected with the counnter attack that the polarity of the polarity that prevents said power supply adaptor and rechargeable battery is not complementary and insert the unit;
Between the input of the output of said lifting/voltage reducing unit and charging current detecting unit, be connected with rectification filtering unit; Said rectification filtering unit comprises two electric capacity and a diode; The anode of said diode connects the output of said lifting/voltage reducing unit; The negative electrode of said diode connects the input of said charging current detecting unit, and said two electric capacity are connected between the negative electrode and ground of said diode;
Said charging current detecting unit comprises:
Current sensing resistor, first division module, second division module and differential amplifier;
First end of said current sensing resistor is as the output of the said lifting/voltage reducing of the input termination unit of charging current detecting unit; The said rechargeable battery of second termination of said current sensing resistor; First end of the said current sensing resistor of input termination of said first division module; The inverting input of the said differential amplifier of output termination of said first division module, second end of the said current sensing resistor of input termination of said second division module, the in-phase input end of the said differential amplifier of output termination of said second division module; The input of the said control unit of output termination of said differential amplifier; Said control unit adopts control chip, is specially second input of the output termination control chip of said differential amplifier.
2. charge management circuit as claimed in claim 1 is characterized in that, said lifting/voltage reducing unit comprises:
Boost module, first driver module, second driver module, first switch module, second switch module and energy-storage module;
The input of said boost module is as the said control unit of control termination of said lifting/voltage reducing unit; The output of said boost module connects the input of said first driver module and the input of second driver module respectively; The control end of said first switch module of output termination of said first driver module; The control end of the said second switch module of output termination of said second driver module; The input of said first switch module is as the output of the said power supply adaptor of input termination of said lifting/voltage reducing unit, first end of the said energy-storage module of output termination of said first switch module, second end of the said energy-storage module of input termination of said second switch module; Second end of said energy-storage module is as the output of said lifting/voltage reducing unit, the output head grounding of said second switch module.
3. charge management circuit as claimed in claim 2; It is characterized in that; Said boost module is a comparator; The first comparison negative input end of said comparator connects said control unit, and second of said comparator compares negative input end and connects said control unit, and first of said comparator compares positive input terminal and the second comparison positive input terminal connects fixed voltage simultaneously; The input of said first driver module of the first output termination of said comparator, the input of said second driver module of the second output termination of said comparator;
Said first driver module comprises first triode and second triode; The base stage of first triode and second triode connects first output of said comparator simultaneously; The emitter of first triode connects the emitter of second triode, the grounded collector of second triode;
Said second driver module comprises the 3rd triode and the 4th triode; The base stage of the 3rd triode and the 4th triode connects second output of said comparator simultaneously; The emitter of the 3rd triode connects the emitter of the 4th triode, the grounded collector of the 4th triode;
Said first switch module comprises first metal-oxide-semiconductor; The source electrode of said first metal-oxide-semiconductor is as the output of the said power supply adaptor of input termination of lifting/voltage reducing unit and the collector electrode of first triode; The grid of said first metal-oxide-semiconductor connects the emitter of first triode and second triode simultaneously, and the drain electrode of said first metal-oxide-semiconductor connects first end of said energy-storage module;
Said second switch module comprises second metal-oxide-semiconductor, and the grid of said second metal-oxide-semiconductor connects the emitter of the 3rd triode and the 4th triode simultaneously, and the drain electrode of said second metal-oxide-semiconductor connects second end of said energy-storage module, the source ground of said second metal-oxide-semiconductor;
Said energy-storage module is an inductance, the drain electrode of first termination, first metal-oxide-semiconductor of said inductance, the drain electrode of second termination, second metal-oxide-semiconductor of said inductance.
4. charge management circuit as claimed in claim 3; It is characterized in that; Said control unit adopts control chip; The first input end of said control chip connects the output of said voltage detection unit, and first of the said comparator of the first output termination of said control chip compares negative input end, and second of second output of said control chip and the said comparator of the 3rd output termination compares negative input end.
5. a power supply adapting device is characterized in that, said power supply adapting device comprises power supply adaptor and each described charge management circuit of claim 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010137356A CN101807805B (en) | 2010-03-26 | 2010-03-26 | Charging management circuit and power supply adapting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010137356A CN101807805B (en) | 2010-03-26 | 2010-03-26 | Charging management circuit and power supply adapting device |
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| CN101807805A CN101807805A (en) | 2010-08-18 |
| CN101807805B true CN101807805B (en) | 2012-10-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558439B (en) * | 2013-10-12 | 2016-06-29 | 华为技术有限公司 | Current detection circuit |
| CN103532212B (en) * | 2013-10-24 | 2016-04-13 | 加一联创电子科技有限公司 | A kind of charge management circuit and portable power source |
| CN104348238B (en) * | 2014-11-13 | 2017-05-10 | 惠州Tcl移动通信有限公司 | Charging voltage control device, mobile terminal and control method |
| CN104518230B (en) * | 2014-12-16 | 2018-03-09 | 华侨大学 | A kind of control circuit and method of automatic detection MFCs battery voltages reversion battery |
| CN104917271A (en) * | 2015-06-19 | 2015-09-16 | 李�昊 | Adapter |
| US10491039B2 (en) * | 2015-09-15 | 2019-11-26 | Mediatek Inc. | Power transfer circuit and method utilizing power capability proclamation to transfer electrical power to charger |
| US10243243B2 (en) | 2016-06-30 | 2019-03-26 | Lenovo (Beijing) Co., Ltd. | Battery and charging method |
| CN105978104B (en) * | 2016-06-30 | 2019-03-08 | 联想(北京)有限公司 | A kind of battery and electronic equipment |
| CN109980752B (en) * | 2019-05-09 | 2021-12-14 | 奇越科技(北京)有限公司 | Intelligent battery capable of configuring output and configuration method of intelligent battery |
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| JP3742780B2 (en) * | 2002-05-09 | 2006-02-08 | 松下電器産業株式会社 | DC-DC converter |
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| CN2377688Y (en) * | 1999-05-07 | 2000-05-10 | 杨泰和 | Linear adjustable voltage limit circuit arrangement for charging battery |
| CN1848595A (en) * | 2005-04-05 | 2006-10-18 | 刘迎武 | Reversible charging portable device and method for providing adjustable output electric power thereof |
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Address after: 518000 803, block B, Jingang center, Jingang building, houye community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee after: Shenzhen moting Medical Technology Co.,Ltd. Patentee after: SHENZHEN MOPTIM IMAGING TECHNIQUE Co.,Ltd. Address before: 518000, A building, West terrace, West terrace, Longgang District, Guangdong, Shenzhen Patentee before: SHENZHEN CERTAINN TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN MOPTIM IMAGING TECHNIQUE Co.,Ltd. |
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Address after: Room L302, Building 2, Skyworth Innovation Valley, No. 8 Tangtou 1st Road, Tangtou Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province, 518108 Patentee after: Shenzhen Moting Medical Technology Co.,Ltd. Address before: 518000 803, block B, Jingang center, Jingang building, houye community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee before: Shenzhen moting Medical Technology Co.,Ltd. |
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