CN105896646A - Intelligent buck-boost charging/discharging circuit and charging/discharging method thereof - Google Patents

Intelligent buck-boost charging/discharging circuit and charging/discharging method thereof Download PDF

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Publication number
CN105896646A
CN105896646A CN201610213642.9A CN201610213642A CN105896646A CN 105896646 A CN105896646 A CN 105896646A CN 201610213642 A CN201610213642 A CN 201610213642A CN 105896646 A CN105896646 A CN 105896646A
Authority
CN
China
Prior art keywords
switch
discharge
voltage
circuit
charge
Prior art date
Application number
CN201610213642.9A
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Chinese (zh)
Inventor
刘双明
何展
李天吻
Original Assignee
东莞市太业电子股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201610213642.9A priority Critical patent/CN105896646A/en
Publication of CN105896646A publication Critical patent/CN105896646A/en

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Classifications

    • 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
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/0072Regulation of charging or discharging current or voltage using semiconductor devices only
    • H02J7/0077Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to electric parameters
    • H02J7/0085Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to electric parameters with the battery disconnected from the charge circuit
    • H02J7/0086Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to electric parameters with the battery disconnected from the charge circuit and in response to battery voltage

Abstract

An intelligent buck-boost charging/discharging circuit provided by the present invention comprises a battery module, a power inductor, a charging/discharging control port, a free input/output port and a control unit, the free input/output port is equipped with a current detection circuit, and a first voltage detection circuit is connected between the charging/discharging control port and the free input/output port. A second voltage detection circuit is connected between the anode and the cathode of the battery module, and the control unit controls the on-off of the first, second, third and fourth switches according to the information transmitted by the first voltage detection circuit, the second voltage detection circuit and the current detection circuit. The beneficial effects of the present invention are that the circuit can realize the functions, such as the boost charging, the buck charging, the boost discharging, the buck discharging, the bypass, etc.; a portable power supply applying the circuit can charge itself rapidly; various and different mobile terminals can be charged rapidly; the people are convenient to use.

Description

Intelligent boost-buck charge-discharge circuit and charging/discharging thereof thereof

Technical field

The present invention relates to control circuit field, particularly to a kind of Intelligent boost-buck charge-discharge circuit and Charging/discharging thereof.

Background technology

Along with scientific and technological and social progress, portable notebook computer, panel computer, smart mobile phone etc. Increasing mobile terminal spreads to the life of people.But the volume of mobile terminal is limited makes it The limited battery capacity carried, for mobile phone, cannot fill in going on business or travelling In the case of electricity, the work of people and life can be brought inconvenience, thus compact power is operated And give birth to.Conventional portable power supply input and output voltage is 5V, and charge-discharge electric power is smaller, charging speed Degree is slow, and discharge voltage is fixed from changing by needed for equipment.Once meet and need relatively high power to power Equipment, such as notebook, panel computer etc., conventional portable power supply then cannot charge for it.

Summary of the invention

The present invention is directed to the disappearance of prior art existence, it is provided that a kind of Intelligent boost-buck charge-discharge circuit and Its charging/discharging thereof, it can realize boost charge, blood pressure lowering charging, step-up discharge, step-down discharge and Bypass Etc. function, the compact power of this circuit of use can for self quick charge, also can be various not Same mobile terminal quick charge, is convenient for people to use.

For achieving the above object, the present invention uses such as purgation technical scheme:

A kind of Intelligent boost-buck charge-discharge circuit, including battery modules, power inductance, charge and discharge control Port, Freely input output port and control unit, described charge and discharge control port and Freely input are defeated Go out port to be connected with one end of power inductance by the first switch and second switch respectively;Described power electricity The other end of sense is connected with the positive pole of battery modules by the 3rd switch respectively, by the 4th switch and electricity The negative pole of pond module connects;Described Freely input output port is provided with current detection circuit;Described charge and discharge It is connected between electrical control port with Freely input output port and has the first voltage detecting circuit, described battery It is connected between the positive pole of module and negative pole and has the second voltage detecting circuit;Described control unit is according to the first electricity Pressure testing circuit, the second voltage detecting circuit and current detection circuit transmission information control first switch, The conducting of second switch, the 3rd switch and the 4th switch realizes boosting or blood pressure lowering discharge and recharge with disconnecting.

As a kind of preferred version, set between described charge and discharge control port and Freely input output port There is the first filter capacitor, between positive pole and the negative pole of described battery modules, be provided with the second filter capacitor.

As a kind of preferred version, described charge and discharge control port include input port, output port and Input and output switching switch, described input port, output port and the first switch are cut by input and output Change on-off control to be connected with each other.

As a kind of preferred version, described current detection circuit includes the first detection resistance, described first Detection resistance one end is connected with Freely input output port, and the other end is connected with the negative pole of battery modules.

As a kind of preferred version, described first voltage detecting circuit includes the second detection resistance and the 3rd Detection resistance, described second detection resistance one end is connected with charge and discharge control port, the other end and the 3rd Detection resistant series connects, and the described 3rd detection resistance other end is connected with the negative pole of battery modules.

As a kind of preferred version, described second voltage detecting circuit includes the 4th detection resistance and the 5th Detection resistance, described 4th detection resistance one end is connected with the positive pole of battery modules, the other end and the 5th Detection resistant series connects, and the other end of described 5th detection resistance is connected with the negative pole of battery modules.

A kind of charging method of Intelligent boost-buck charge-discharge circuit as the aforementioned:

During charging, control unit is obtained by the first voltage detecting circuit and the second voltage detecting circuit respectively Obtain input voltage and cell voltage, and both are compared, when input voltage is less than cell voltage Carry out boost charge, carry out blood pressure lowering charging when input voltage is higher than cell voltage;

During boost charge, control unit controls the first switch respectively and is held on, and second switch keeps disconnected Open, the 3rd switch and the 4th switch alternate conduction, the voltage letter simultaneously provided according to current detection circuit The dutycycle of breath control the 3rd switch and the 4th switch alternate conduction controls the size of input current;

During blood pressure lowering charging, control unit controls the 3rd switch respectively and is held on, and the 4th switch keeps disconnected Open, the first switch and second switch alternate conduction, the voltage letter simultaneously provided according to current detection circuit The dutycycle of breath control the first switch and second switch alternate conduction controls the size of input current.

A kind of charging method of Intelligent boost-buck charge-discharge circuit as the aforementioned:

During electric discharge, control unit is obtained by the first voltage detecting circuit and the second voltage detecting circuit respectively Obtain output voltage and cell voltage, and both are compared, when output voltage is less than cell voltage Carry out step-up discharge, carry out step-down discharge when output voltage is higher than cell voltage;

During step-up discharge, control unit controls the 3rd switch respectively and is held on, and the 4th switch keeps disconnected Open, the first switch and second switch alternate conduction, simultaneously control the according to output voltage feedack The dutycycle of one switch and second switch alternate conduction regulates the size of output voltage;

During step-down discharge, control unit controls the first switch respectively and is held on, and second switch keeps disconnected Open, the 3rd switch and the 4th switch alternate conduction, simultaneously control the according to output voltage feedack The dutycycle of three switches and the 4th switch alternate conduction regulates the size of output voltage.

The present invention is because the left end of this circuit is possible not only to make input and can also export, so passing through control Can be used as input and output by left end after input and output processed switching switch, this circuit also has There is the ability that electric energy is provided while charging the battery to exterior terminal bypass.When input and output are cut Change switch to switch to switch off with first, when input port is connected with output port, the electric energy of input Directly Bypass is to output port.Mouth connects, and when being connected with the first switch, the electric energy of input exists Bypass can also charge the battery to while output port.

The present invention compared with prior art, has the following advantages and advantage, specifically, passes through battery Module, power inductance, charge and discharge control port, Freely input output port, control unit, first Switch, second switch, the 3rd switch, the 4th switch, current detection circuit, the first voltage detecting electricity Road and the second voltage detecting circuit form an Intelligent boost-buck charge-discharge circuit, use this circuit Compact power, when charging, is possible not only to charge the battery with the power supply less than cell voltage, it is possible to To charge the battery with the power supply higher than cell voltage, when electric discharge, it is possible not only to higher than battery electricity The external equipment of pressure provides electric energy, it is also possible to gives and provides electric energy less than the external equipment of cell voltage, with Time can also realize bidirectional voltage boosting or blood pressure lowering conversion, the occasion of multiple voltage level requirements can be met;With Time its high-power fan-out capability, the low power consuming terminal units such as traditional mobile phone, iPad can not only be met, The equipment of the bigger power consumption such as MacBook, notebook can also be met;Additionally its Width funtion electric current input and The feature of output area can meet the requirement of different application occasion and fast charging and discharging, adapts to fast pace Society, be convenient for people to use.

By more clearly illustrating the architectural feature of the present invention, technological means and the specific purposes reached thereof And function, with specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings:

Accompanying drawing explanation

Fig. 1 is the circuit diagram of embodiments of the present invention.

Accompanying drawing identifier declaration:

1-battery modules, 2-charge and discharge control port, 21-input port, 22-output port, 3-is certainly By input/output port, 4-control unit, 5-current detection circuit, 6-the first voltage detecting circuit, 7-the second voltage detecting circuit, L1-power inductance, K1-first switchs, K2-second switch, K3- Three switches, K4-the 4th switchs, and K5-input and output switching switch, R1-first detects resistance, and R2-second examines Measuring resistance, R3-the 3rd detects resistance, and R4-the 4th detects resistance, and R5-the 5th detects resistance, C1- One filter capacitor, C2-the second filter capacitor.

Detailed description of the invention

As it is shown in figure 1, a kind of Intelligent boost-buck charge-discharge circuit, including battery modules 1, power inductance L1, charge and discharge control port 2, Freely input output port 3 and control unit 4, described charge and discharge control Port 2 and Freely input output port 3 are respectively by the first switch K1 and second switch K2 and power inductance One end of L1 connects;The other end of described power inductance L1 is respectively by the 3rd switch K3 and battery modules 1 Positive pole connect, by the 4th switch K4 be connected with the negative pole of battery modules 1;Described Freely input exports Port 3 is provided with current detection circuit 5;Described charge and discharge control port 2 and Freely input output port 3 it Between connect and have the first voltage detecting circuit 6, be connected between positive pole and the negative pole of described battery modules 1 and have the Two voltage detecting circuits 7;Described control unit 4 is according to first voltage detecting circuit the 6, second voltage detecting electricity The information of road 7 and current detection circuit 5 transmission controls the first switch K1, second switch K2, the 3rd switch The conducting of K3 and the 4th switch K4 realizes boosting or blood pressure lowering discharge and recharge with disconnecting.

It is provided with the first filter capacitor between described charge and discharge control port 2 and Freely input output port 3 C1, is provided with the second filter capacitor C2 between positive pole and the negative pole of described battery modules 1.

Described charge and discharge control port 2 includes that input port 21, output port 22 and input and output switching are opened Closing K5, described input port 21, output port 22 and the first switch K1 are by input and output switching switch K5 is connected with each other.

Described current detection circuit 5 includes the first detection resistance R1, described first detection resistance R1 one end with Freely input output port 3 connects, and the other end is connected with the negative pole of battery modules 1.

Described first voltage detecting circuit 6 includes the second detection resistance R2 and the 3rd detection resistance R3, described Second detection resistance R2 one end is connected with charge and discharge control port 2, the other end and the 3rd detection resistance R3 string Connection connects, and the described 3rd detection resistance R3 other end is connected with the negative pole of battery modules 1.

Described second voltage detecting circuit 7 includes the 4th detection resistance R4 and the 5th detection resistance R5, described 4th detection resistance R4 one end is connected with the positive pole of battery modules 1, the other end and the 5th detection resistance R5 string Connection connects, and the other end of described 5th detection resistance R5 is connected with the negative pole of battery modules 1.

Input and output switching switch K5, when charging, is first switched to input port 21 and the by the present invention One switch K1 connects, and output port 22 disconnects with input port 21 and the first switch K1, now controls list Unit 4 obtains input voltage and electricity by the first voltage detecting circuit 6 and the second voltage detecting circuit 7 respectively Cell voltage, and both are compared, carry out boost charge when input voltage is less than cell voltage, Blood pressure lowering charging is carried out when input voltage is higher than cell voltage:

When carrying out boost charge, control unit 4 controls the first switch K1 respectively and is held on, second switch K2 remains open, and the 3rd switch K3 and the 4th switch K4 alternate conduction, simultaneously according to current detection circuit 5 The information of voltage provided controls the dutycycle of the 3rd switch K3 and the 4th switch K4 alternate conduction and controls defeated Enter the size of electric current;

When carrying out blood pressure lowering charging, control unit 4 controls the 3rd switch K3 respectively and is held on, the 4th switch K4 remains open, and the first switch K1 and second switch K2 alternate conduction, simultaneously according to current detection circuit 5 The information of voltage provided controls the dutycycle of the first switch K1 and second switch K2 alternate conduction and controls defeated Enter the size of electric current.

When the present invention discharges, first input and output switching switch K5 is switched to output port 22 and first Switch K1 connects, and input port 21 disconnects with output port 22 and the first switch K1, now control unit 4 Output voltage and battery electricity is obtained respectively by the first voltage detecting circuit 6 and the second voltage detecting circuit 7 Pressure, and both are compared, carry out step-up discharge, when defeated when output voltage is less than cell voltage Go out and when voltage is higher than cell voltage, carry out step-down discharge:

When carrying out step-up discharge, control unit 4 controls the 3rd switch K3 respectively and is held on, the 4th switch K4 remains open, the first switch K1 and second switch K2 alternate conduction, feeds back according to output voltage simultaneously Information control the first switch K1 and the dutycycle of second switch K2 alternate conduction regulates output voltage Size;

When carrying out step-down discharge, control unit 4 controls the first switch K1 respectively and is held on, second switch K2 remains open, the 3rd switch K3 and the 4th switch K4 alternate conduction, feeds back according to output voltage simultaneously Information control the 3rd switch K3 and the 4th switch K4 alternate conduction dutycycle regulate output voltage Size.

The present invention is because the left end of this circuit is possible not only to make input and can also export, so passing through control Can be used as input and output by left end after input/output switching K5 processed, this circuit also has There is provided the ability of electric energy to while charging the battery exterior terminal bypass.When input and output switch Switch K5 switches to disconnect with the first switch K1, when input port 21 connects with output port 22, and input The direct Bypass of electric energy to output port 22.When input and output switching switch K5 switches to input port 21 are connected with output port 22, and when being connected with the first switch K1, the electric energy of input is given defeated at Bypass Can also charge the battery while going out port 22.

The above, be only presently preferred embodiments of the present invention, not in order to limit the present invention, therefore Any amendment, equivalent that above example is made by every technology reality according to the present invention, change Enter, all still fall within the range of technical solution of the present invention.

Claims (8)

1. an Intelligent boost-buck charge-discharge circuit, automatically controlled including battery modules, power inductance, charge and discharge Port processed, Freely input output port and control unit, it is characterised in that: described charge and discharge control end Mouth and Freely input output port are respectively by one end of the first switch and second switch and power inductance even Connect;The other end of described power inductance is connected with the positive pole of battery modules by the 3rd switch respectively, logical Cross the 4th switch to be connected with the negative pole of battery modules;Described Freely input output port is provided with current detecting Circuit;It is connected between described charge and discharge control port and Freely input output port and has the first voltage detecting Circuit, is connected between the positive pole of described battery modules and negative pole and has the second voltage detecting circuit;Described control Unit processed is according to the first voltage detecting circuit, the second voltage detecting circuit and the letter of current detection circuit transmission Breath controls the conducting of the first switch, second switch, the 3rd switch and the 4th switch and realizes boosting with disconnecting Or blood pressure lowering discharge and recharge.
Intelligent boost-buck charge-discharge circuit the most according to claim 1, it is characterised in that: described The first filter capacitor, described battery mould it is provided with between charge and discharge control port and Freely input output port It is provided with the second filter capacitor between positive pole and the negative pole of group.
Intelligent boost-buck charge-discharge circuit the most according to claim 1, it is characterised in that: described Charge and discharge control port includes input port, output port and input and output switching switch, described input Port, output port and the first switch are connected with each other by input and output switching on-off control.
Intelligent boost-buck charge-discharge circuit the most according to claim 1, it is characterised in that: described Current detection circuit includes that the first detection resistance, described first detection resistance one end export with Freely input Port connects, and the other end is connected with the negative pole of battery modules.
Intelligent boost-buck charge-discharge circuit the most according to claim 1, it is characterised in that: described First voltage detecting circuit includes the second detection resistance and the 3rd detection resistance, described second detection resistance One end is connected with charge and discharge control port, and the other end and the 3rd detection resistant series connect, and the described 3rd The detection resistance other end is connected with the negative pole of battery modules.
Intelligent boost-buck charge-discharge circuit the most according to claim 1, it is characterised in that: described Second voltage detecting circuit includes the 4th detection resistance and the 5th detection resistance, described 4th detection resistance One end is connected with the positive pole of battery modules, and the other end and the 5th detection resistant series connect, and the described 5th The other end of detection resistance is connected with the negative pole of battery modules.
7. the charging of the Intelligent boost-buck charge-discharge circuit described in an aforementioned any one of claim 1-6 Method, it is characterised in that:
During charging, control unit is obtained by the first voltage detecting circuit and the second voltage detecting circuit respectively Obtain input voltage and cell voltage, and both are compared, when input voltage is less than cell voltage Carry out boost charge, carry out blood pressure lowering charging when input voltage is higher than cell voltage;
During boost charge, control unit controls the first switch respectively and is held on, and second switch keeps disconnected Open, the 3rd switch and the 4th switch alternate conduction, the voltage letter simultaneously provided according to current detection circuit The dutycycle of breath control the 3rd switch and the 4th switch alternate conduction controls the size of input current;
During blood pressure lowering charging, control unit controls the 3rd switch respectively and is held on, and the 4th switch keeps disconnected Open, the first switch and second switch alternate conduction, the voltage letter simultaneously provided according to current detection circuit The dutycycle of breath control the first switch and second switch alternate conduction controls the size of input current.
8. the electric discharge of the Intelligent boost-buck charge-discharge circuit described in an aforementioned any one of claim 1-6 Method, it is characterised in that:
During electric discharge, control unit is obtained by the first voltage detecting circuit and the second voltage detecting circuit respectively Obtain output voltage and cell voltage, and both are compared, when output voltage is less than cell voltage Carry out step-up discharge, carry out step-down discharge when output voltage is higher than cell voltage;
During step-up discharge, control unit controls the 3rd switch respectively and is held on, and the 4th switch keeps disconnected Open, the first switch and second switch alternate conduction, simultaneously control the according to output voltage feedack The dutycycle of one switch and second switch alternate conduction regulates the size of output voltage;
During step-down discharge, control unit controls the first switch respectively and is held on, and second switch keeps disconnected Open, the 3rd switch and the 4th switch alternate conduction, simultaneously control the according to output voltage feedack The dutycycle of three switches and the 4th switch alternate conduction regulates the size of output voltage.
CN201610213642.9A 2016-04-07 2016-04-07 Intelligent buck-boost charging/discharging circuit and charging/discharging method thereof CN105896646A (en)

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CN201610213642.9A CN105896646A (en) 2016-04-07 2016-04-07 Intelligent buck-boost charging/discharging circuit and charging/discharging method thereof

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106786894A (en) * 2016-12-26 2017-05-31 锐马(福建)电气制造有限公司 One kind is based on binodal lithium battery fast charge method and electronic equipment charging module
CN106849239A (en) * 2017-02-21 2017-06-13 苏州协鑫集成储能科技有限公司 Energy storage control device, energy storage charging method and energy-storage box
CN107591858A (en) * 2017-09-21 2018-01-16 努比亚技术有限公司 A kind of charging method, terminal and computer-readable recording medium
CN108767921A (en) * 2018-06-01 2018-11-06 宁波青大智能安防科技有限公司 A kind of smart battery pack and the electric tool with the smart battery pack
CN108964197A (en) * 2018-08-07 2018-12-07 深圳宝砾微电子有限公司 A kind of charging circuit and power supply device
EP3506450A4 (en) * 2016-08-24 2020-01-22 Tianjin Synergy Groups Co., Ltd. Mobile power source

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CN103762843A (en) * 2013-10-18 2014-04-30 江苏大学 Two-way boost-buck circuit for storage battery energy-storage system and digital control method thereof
KR20150101913A (en) * 2014-02-27 2015-09-04 단국대학교 산학협력단 Method for battery charging control and apparatus therefor
CN205583749U (en) * 2016-04-07 2016-09-14 东莞市太业电子股份有限公司 Intelligence goes up and down to press charging and discharging circuit

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Publication number Priority date Publication date Assignee Title
CN101401287A (en) * 2006-03-22 2009-04-01 三菱电机株式会社 Bidirectional step-up/step-down DC/DC converter apparatus
CN103762843A (en) * 2013-10-18 2014-04-30 江苏大学 Two-way boost-buck circuit for storage battery energy-storage system and digital control method thereof
KR20150101913A (en) * 2014-02-27 2015-09-04 단국대학교 산학협력단 Method for battery charging control and apparatus therefor
CN205583749U (en) * 2016-04-07 2016-09-14 东莞市太业电子股份有限公司 Intelligence goes up and down to press charging and discharging circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3506450A4 (en) * 2016-08-24 2020-01-22 Tianjin Synergy Groups Co., Ltd. Mobile power source
CN106786894B (en) * 2016-12-26 2019-07-16 锐马(福建)电气制造有限公司 One kind being based on binodal lithium battery fast charge method and electronic equipment charging module
CN106786894A (en) * 2016-12-26 2017-05-31 锐马(福建)电气制造有限公司 One kind is based on binodal lithium battery fast charge method and electronic equipment charging module
CN106849239A (en) * 2017-02-21 2017-06-13 苏州协鑫集成储能科技有限公司 Energy storage control device, energy storage charging method and energy-storage box
CN107591858A (en) * 2017-09-21 2018-01-16 努比亚技术有限公司 A kind of charging method, terminal and computer-readable recording medium
CN107591858B (en) * 2017-09-21 2020-10-27 邳州市润宏实业有限公司 Charging method, terminal and computer readable storage medium
CN108767921A (en) * 2018-06-01 2018-11-06 宁波青大智能安防科技有限公司 A kind of smart battery pack and the electric tool with the smart battery pack
CN108964197A (en) * 2018-08-07 2018-12-07 深圳宝砾微电子有限公司 A kind of charging circuit and power supply device
CN108964197B (en) * 2018-08-07 2020-11-17 深圳宝砾微电子有限公司 Charging circuit and power supply device

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