CN103607010B - The charge-discharge controller of portable power source and method - Google Patents

The charge-discharge controller of portable power source and method Download PDF

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Publication number
CN103607010B
CN103607010B CN201310604086.4A CN201310604086A CN103607010B CN 103607010 B CN103607010 B CN 103607010B CN 201310604086 A CN201310604086 A CN 201310604086A CN 103607010 B CN103607010 B CN 103607010B
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China
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discharge
control
module
charge
input
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CN201310604086.4A
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Chinese (zh)
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CN103607010A (en
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王刚
王光
万四宏
何志兵
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深圳市民展科技开发有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The charge-discharge controller of portable power source and a method, after receiving control command, judge whether the DC voltage that discharge and recharge port inputs meets the charge condition preset, if then send charging control signal.When receiving charging control signal, the direct current receiving the input of discharge and recharge port is the battery charging of portable power source, and portable power source is in charge mode.If the DC voltage of discharge and recharge port input does not meet charge condition, send discharge control signal.When receiving discharge control signal, export discharge and recharge port to after carrying out boosting process to the direct current of input, make the battery discharge of portable power source, portable power source is in discharge mode.The battery charge or discharge of portable power source are controlled according to the DC voltage size of discharge and recharge port input, portable power source can not be in charge mode and discharge mode simultaneously, avoid causing the work of portable power source internal circuitry disorderly, improve the stability in use of portable power source.

Description

The charge-discharge controller of portable power source and method
Technical field
The present invention relates to portable power source technical field, particularly relate to a kind of charge-discharge controller and method of portable power source.
Background technology
Portable power source is a kind of portable charger integrating power supply and charge function, there is Large Copacity, multipurpose, volume is little, the life-span is long and the feature such as safe and reliable, can whenever and wherever possible for the digital products such as mobile phone, digital camera, MP3, MP4, palmtop PC, handheld device are powered or the functional product of standby charging.
Portable power source in the market all possesses the electric discharge port that at least one power supply exports, and a charging port inputted to portable power source charging, by the charging/discharging function selecting different ports to realize portable power source.In normal circumstances, the electric discharge port of portable power source uses to external equipment charging.When user is because of improper use or carelessness, when being connected with charging port by the electric discharge port of portable power source, portable power source there will be oneself to the phenomenon of oneself charging, causes the Circuits System work of portable power source inside disorderly.There is the low shortcoming of stability in use in traditional portable power source.
Summary of the invention
Based on this, be necessary to provide a kind of charge-discharge controller and the method that improve the portable power source of portable power source stability in use.
A charge-discharge controller for portable power source, comprising: discharge and recharge port; Charge control module, comprise input, output and control end, the input of described charge control module connects described discharge and recharge port, described charge control module, when the control end of described charge control module receives charging control signal, receives the direct current of described discharge and recharge port input and is exported by the output of described charge control module; Control of discharge module, comprise control of discharge input, control of discharge output and control of discharge end, the control of discharge output of described control of discharge module connects described discharge and recharge port, described control of discharge module is used for when the control of discharge termination of described control of discharge module receives discharge control signal, carries out exporting described discharge and recharge port to after boosting processes to the direct current that the control of discharge input of described control of discharge module inputs; Control module, connect described discharge and recharge port, the control end of charge control module and the control of discharge end of control of discharge module, for after receiving control command, judge whether the DC voltage that described discharge and recharge port inputs meets the charge condition preset, if then send the control end of described charging control signal to described charge control module, then send the control of discharge end of described discharge control signal to described control of discharge module if not; The output of described charge control module and the control of discharge input of control of discharge module are all for being connected the anode of portable power source.
Wherein in an embodiment, described control command is low level signal, and described control module comprises control chip and pressurizer,
Described control chip connects described discharge and recharge port, the control end of charge control module and the control of discharge end of control of discharge module, for after receiving described low level signal, judge whether the DC voltage that described discharge and recharge port inputs is more than or equal to preset voltage value, if then send the control end of described charging control signal to described charge control module, then send the control of discharge end of described discharge control signal to described control of discharge module if not; And quit work after again receiving described low level signal;
The input of described pressurizer is for accessing direct current, and the output of described pressurizer connects described control chip, and described pressurizer is used for exporting described control chip to, for described control chip provides operating voltage to after the direct current voltage stabilizing process of access.
Wherein in an embodiment, described control module also comprises diode, and the positive pole of described diode connects described discharge and recharge port, and the negative pole of described diode connects the input of described pressurizer.
Wherein in an embodiment, described charging control signal comprises charge switch Continuity signal and charging enable signal, and described charge control module comprises charge switch and charging chip,
The control end of described charge switch and the control end of charging chip are the control end of described charge control module, the input of described charge switch is the input of described charge control module, the output of described charge switch connects the input of described charging chip, the output of described charging chip is the output of described charge control module, the conducting when receiving described charge switch Continuity signal of described charge switch, access the direct current of described discharge and recharge port input, described charging chip is when receiving described charging enable signal, export the direct current of described charge switch access.
Wherein in an embodiment, described charge switch comprises the first switching tube, second switch pipe and the first bias resistance,
The input of described first switching tube is the input of described charge switch, and connects the control end of described first switching tube by described first bias resistance, and the output of described first switching tube is the output of described charge switch,
The control end of described second switch pipe is the control end of described charge switch, and the input of described second switch pipe connects the input of described second switch pipe, the output head grounding of described second switch pipe by described first bias resistance.
Wherein in an embodiment, described discharge control signal comprises discharge switch Continuity signal and boosting enable signal, and described control of discharge module comprises discharge switch and boost chip,
The control end of described discharge switch and the control end of boost chip are the control of discharge end of described control of discharge module, the input of described discharge switch is the control of discharge input of described control of discharge module, the output of described discharge switch connects the input of described boost chip, the output of described boost chip is the control of discharge output of described control of discharge module, the conducting when receiving described discharge switch Continuity signal of described discharge switch, the direct current that the input accessing described discharge switch receives, described boost chip is when receiving described boosting enable signal, the direct current accessed described discharge switch carries out boosting and processes and export described discharge and recharge port to.
Wherein in an embodiment, described discharge switch comprises the 3rd switching tube, the 4th switching tube and the second bias resistance,
The input of described 3rd switching tube is the input of described discharge switch, and connects the control end of described 3rd switching tube by described second bias resistance, and the output of described 3rd switching tube is the output of described discharge switch,
The control end of described 4th switching tube is the control end of described discharge switch, and the input of described 4th switching tube connects the control end of described 3rd switching tube, the output head grounding of described 4th switching tube.
Wherein in an embodiment, the charge-discharge controller of described portable power source also comprises voltage detection module and display module,
Described voltage detection module comprises input and output, and the output of described voltage detection module connects described control module, and described display module connects described control module;
Described voltage detection module is for gathering the galvanic magnitude of voltage of the input reception of described voltage detection module and being sent to described control module, and described control module controls presupposed information corresponding to described display module display according to the galvanic magnitude of voltage that described voltage detection module sends.
Wherein in an embodiment, the charge-discharge controller of described portable power source also comprises current monitoring module,
Described current monitoring module comprises input and output, the input of described current monitoring module connects the control of discharge output of described control of discharge module, the output of described current monitoring module connects described control module, whether described current monitoring module exceedes pre-set current value for the galvanic current value detecting the output of described control of discharge module, if then send feedback signal to described control module, described control module stops sending described discharge control signal after receiving described feedback signal.
A charge/discharge control method for portable power source, comprises the following steps:
Receive control command, judge whether the DC voltage that discharge and recharge port inputs meets the charge condition preset;
If so, then charging control signal is sent;
If not, then discharge control signal is sent;
When receiving described charging control signal, receive and export described discharge and recharge port input direct current, for charging to the battery of portable power source;
When receiving described discharge control signal, exporting described discharge and recharge port to after boosting process is carried out to the direct current of input, making the battery discharge of described portable power source.
The charge-discharge controller of above-mentioned portable power source and method, after receiving control command, judge whether the DC voltage that discharge and recharge port inputs meets the charge condition preset, if then send charging control signal.When receiving charging control signal, receive the direct current of discharge and recharge port input and export, for the battery of portable power source charges, portable power source is in charge mode.If the DC voltage of discharge and recharge port input does not meet charge condition, send discharge control signal.When receiving discharge control signal, export discharge and recharge port to after carrying out boosting process to the direct current of input, make the battery discharge of portable power source, portable power source is in discharge mode.The battery charge or discharge of portable power source are controlled according to the DC voltage size of discharge and recharge port input, portable power source can not be in charge mode and discharge mode simultaneously, avoid causing the work of portable power source internal circuitry disorderly, improve the stability in use of portable power source.
Accompanying drawing explanation
Fig. 1 is the structure chart of the charge-discharge controller of portable power source in an embodiment;
Fig. 2 is the structure chart of the charge-discharge controller of portable power source in another embodiment;
Fig. 3 A is the schematic diagram of discharge and recharge port in an embodiment, current monitoring module and partial discharge control module;
Fig. 3 B is the schematic diagram of charge control module and partial discharge control module in an embodiment;
Fig. 3 C is the schematic diagram of control module, sending module, voltage detection module and display module in an embodiment;
Fig. 4 is the flow chart of the charge/discharge control method of portable power source in an embodiment.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
A charge-discharge controller for portable power source, as shown in Figure 1, comprises discharge and recharge port 110, charge control module 120, control of discharge module 130 and control module 140.
Discharge and recharge port 110, for connecting external power adapter, inputs or outputs direct current.Discharge and recharge port 110 can adopt USB (UniversalSerialBus, USB) interface, and discharge and recharge port 110 specifically can only include a port, and portable power source carries out discharge and recharge by same port.Discharge and recharge port 110 also can be comprise two ports, and be used separately as charging port and electric discharge port, charging port connects the input of charge control module 120, for accessing direct current; Electric discharge port connects the control of discharge output of control of discharge module 130, for exporting direct current.In the present embodiment, discharge and recharge port 110 only includes a port, simplifies the structure of the charge-discharge controller of portable power source, also can avoiding user's wrong plug interface when using portable power source, improving operation ease.
Charge control module 120 comprises input, output and control end, and the input of charge control module 120 connects discharge and recharge port 110, and the output of charge control module 120 is for connecting the positive pole of the battery 210 of portable power source, the minus earth of battery 210.Battery 210 can be lithium battery or dry cell etc.
Control of discharge module 130 comprises control of discharge input, control of discharge output and control of discharge end, the control of discharge input of control of discharge module 130 is for connecting the positive pole of battery 210, and the control of discharge output of control of discharge module 130 connects discharge and recharge port 110.
Control module 140 connects discharge and recharge port 110, the control end of charge control module 120 and the control of discharge end of control of discharge module 130.
Control module 140 is after receiving control command, judge whether the DC voltage that discharge and recharge port 110 inputs meets the charge condition preset, if then send the control end of charging control signal to charge control module 120, then send the control of discharge end of discharge control signal to control of discharge module 130 if not.Charge control module 120 is when receiving charging control signal, and receive the direct current of discharge and recharge port 110 input and export, charge to battery 210, portable power source is in charge mode.Control of discharge module 130 is when receiving discharge control signal, and export discharge and recharge port 110 to after carrying out boosting process to the direct current of input, portable power source is in discharge mode.
Charge condition can be different according to the difference of discharge and recharge port 110 concrete structure.If discharge and recharge port 110 only includes a port, charge condition can be that the DC voltage that discharge and recharge port 110 inputs is more than or equal to preset voltage value, and preset voltage value can adjust according to actual conditions.It is 4.5 volts for preset voltage value, if control module 140 judges that the DC voltage that discharge and recharge port 110 inputs is more than or equal to 4.5V, then send the control end of charging control signal to charge control module 120, otherwise then send the control of discharge end of discharge control signal to control of discharge module 130.If discharge and recharge port 110 comprises charging port and electric discharge port two ports, control module 140 only need be connected with charging port and of discharging in port, connect electric discharge port for control module 140, charge condition can be that electric discharge port inputs without direct current.If control module 140 detects electric discharge, port inputs without direct current, then send the control end of charging control signal to charge control module 120, otherwise then sends the control of discharge end of discharge control signal to control of discharge module 130.
Wherein in an embodiment, as shown in Figure 2, the charge-discharge controller of portable power source can comprise the sending module 150 of link control module 140, sending module 150 for sending controling instruction to control module 140.Be appreciated that the charge-discharge controller of portable power source also can not comprise sending module 150, but by external control circuit sending controling instruction to control module 140.
Wherein in an embodiment, continue with reference to Fig. 2, the charge-discharge controller of portable power source also can comprise voltage detection module 160 and display module 170.Voltage detection module 160 comprises input and output, the input of voltage detection module 160 for connecting the positive pole of battery 210, the output link control module 140 of voltage detection module 160, display module 170 link control module 140.
Voltage detection module 160 is for gathering the galvanic magnitude of voltage of the input reception of voltage detection module 160 and being sent to control module 140, and control module 140 controls display module 170 according to the galvanic magnitude of voltage that voltage detection module 160 sends and shows corresponding presupposed information.In addition the galvanic magnitude of voltage that control module 140 also can send in voltage detection module 160 quits work lower than during setting voltage value.
Display module 170 specifically can comprise display lamp and/or display screen, and the concrete structure of display module 170 is different, and presupposed information also can be different.If display module 170 comprises display lamp, the galvanic magnitude of voltage that control module 140 can send according to voltage detection module 160, controls the light on and off quantity of display lamp, or controls display lamp flicker etc.If display module 170 comprises display screen, the galvanic magnitude of voltage that control module 140 can send according to voltage detection module 160, controls display screen and shows different numerical value, number range, word or image etc.
Voltage detection module 160 is utilized to detect the output voltage of the battery 210 of portable power source, control module 140 controls display module 170 according to the magnitude of voltage that battery 210 exports and shows corresponding presupposed information, and control module 140 also can quit work lower than during setting voltage value at magnitude of voltage.The output voltage of battery 210 is monitored, when portable power source is in charge mode or discharge mode, avoids battery 210 charge excessive or discharge excessive, improve portable power source useful life.
Wherein in an embodiment, the charge-discharge controller of portable power source also can comprise current monitoring module 180.
Current monitoring module 180 comprises input and output, and the input of current monitoring module 180 connects the control of discharge output of control of discharge module 130, the output link control module 140 of current monitoring module 180.Whether current monitoring module 180 exceedes pre-set current value for the galvanic current value detecting control of discharge module 130 output, if then send feedback signal to control module 140, control module 140 stops sending discharge control signal after receiving feedback signal.
Pre-set current value can adjust according to actual conditions, when portable power source is in discharge mode, if current monitoring module 180 detects that the galvanic current value that control of discharge module 130 exports exceedes pre-set current value, then send feedback signal to control module 140, control module 140 stops sending discharge control signal to control of discharge module 130, and portable power source stops electric discharge.Namely be that monitor the direct current that control of discharge module 130 exports, control of discharge module 130 quits work when electric current is too high in the present embodiment when portable power source is in discharge mode, avoid damaging outside by charging device.
Wherein in an embodiment, control module 140 also after receiving control command, can be carried out initialization process to other modules in the charge-discharge controller of portable power source, avoids the interference of historical operation.Control module 140, after carrying out initialization process, judges whether the DC voltage that discharge and recharge port 110 inputs meets charge condition.
The charge-discharge controller of above-mentioned portable power source, control module 140 is after receiving control command, judge whether the DC voltage that discharge and recharge port 110 inputs meets the charge condition preset, if then send the control end of charging control signal to charge control module 120, charge control module 120 is when receiving charging control signal, receive the direct current of discharge and recharge port 110 input and exported by the output of charge control module 120, for the battery 210 of portable power source charges, portable power source is in charge mode.If the DC voltage that discharge and recharge port 110 inputs does not meet charge condition, control module 140 sends the control of discharge end of discharge control signal to control of discharge module 130, control of discharge module 130 is when receiving discharge control signal, carry out exporting discharge and recharge port 110 to after boosting processes to the direct current that the control of discharge input of control of discharge module 130 inputs, the battery 210 of portable power source is discharged, and portable power source is in discharge mode.Control module 140 controls charge control module 120 according to the DC voltage size that discharge and recharge port 110 inputs or control of discharge module 130 works, make battery 210 charge or discharge of portable power source, portable power source can not be in charge mode and discharge mode simultaneously, avoid causing the work of portable power source internal circuitry disorderly, improve the stability in use of portable power source.
Be described in detail below in conjunction with Fig. 3 A, Fig. 3 B and the specific works principle of Fig. 3 C to the charge-discharge controller of portable power source.
Wherein in an embodiment, as shown in Figure 3A, discharge and recharge port 110 comprises USB (universal serial bus) USB1A, for connecting external power adapter, inputs or outputs direct current.Discharge and recharge port 110 also can comprise resistance R35, resistance R36, resistance R37 and resistance R38, resistance R35 and resistance R38 connects, the port DM/D-of its common port connection universal serial bus interface USB1A, the power end VCC of resistance R35 other end connection universal serial bus interface USB1A, the earth terminal GND of the other end connection universal serial bus interface USB1A of resistance R38.Resistance R36 and resistance R37 connects, the port DP/D+ of its common port connection universal serial bus interface USB1A, the earth terminal GND of the other end connection universal serial bus interface USB1A of the power end VCC of the other end connection universal serial bus interface USB1A of resistance R36, resistance R37.
The charge-discharge controller of portable power source comprises resistance R27 and resistance R28, resistance R27 and resistance R28 connects, the earth terminal GND of the other end connection universal serial bus interface USB1A of the power end VCC of the other end connection universal serial bus interface USB1A of resistance R27, resistance R28.
Wherein in an embodiment, charging control signal comprises charge switch Continuity signal and charging enable signal, as shown in Figure 3 B, charge control module 120 comprises charge switch 122 and charging chip, in the present embodiment, the battery 210 of portable power source comprises battery BAT1 and battery BAT2, charging chip comprises chip U5 and chip U6, carries out Charge Management respectively to battery BAT1 and battery BAT2.Be appreciated that the quantity of charging chip can adjust according to the quantity of battery 210, in other embodiments, also only can carry out Charge Management to battery BAT1 and battery BAT2 with a charging chip simultaneously.
For chip U5, Charge Management is carried out to battery BAT1, the control end of charge switch 122, and the control end 8 of chip U5 is the control end of charge control module 120, is connected with control module 140.The input of charge switch 122 is the input of charge control module 120, the power end VCC of USB (universal serial bus) USB1A in connection layout 3A, and the output of charge switch 122 connects the input 4 of chip U5.The output 5 of chip U5 is the output of charge control module 120, connects the positive pole of battery BAT1, the minus earth of battery BAT1.The port one of chip U5, port 3 and port 6 ground connection, port 2 is by a grounding through resistance, and port 7 connects power end VCC28 by resistance R16.Charge switch 122 conducting when receiving charge switch Continuity signal, the direct current that access discharge and recharge port 110 inputs, chip U5 is when receiving charging enable signal, and the direct current exporting charge switch 122 access, to battery BAT1, charges to battery BAT1.
Further, charge switch 122 can comprise the first switching tube Q6, second switch pipe Q7 and the first bias resistance R22.The input of the first switching tube Q6 is the input of charge switch 122, and the control end of the first switching tube Q6 is connected by the first bias resistance R22, the output of the first switching tube Q6 is the output of charge switch 122, the control end of second switch pipe Q7 is the control end of charge switch 122, the input of second switch pipe Q7 connects the input of second switch pipe Q6, the output head grounding of second switch pipe Q7 by the first bias resistance R22.In addition charge switch 122 also can comprise the control end current-limiting resistance R23 being series at second switch pipe Q7.
In the present embodiment, the first switching tube Q6 is the P channel MOS tube of DTS2301 model, and second switch pipe Q7 is the NPN type triode of S8050 model.The model of the first switching tube Q6 and second switch pipe Q7 is not unique, and P channel MOS tube can replace by PNP type triode, and NPN type triode can be replaced by N-channel MOS pipe belt.
Be appreciated that the concrete structure of charge switch 122 is not unique yet, only need meet the conducting when its control end receives charge switch Continuity signal, the direct current that access discharge and recharge port 110 inputs.
The charge-discharge controller of portable power source also can comprise electric capacity C8, and electric capacity C8 one end connects the input of charge switch 122, other end ground connection.
Wherein in an embodiment, discharge control signal comprises discharge switch Continuity signal and boosting enable signal, and as shown in Figure 3 A and Figure 3 B, control of discharge module 130 comprises discharge switch 132 and boost chip U4.
In the present embodiment, boost chip U4 is DC-DC (DC-to-DC) boost chip, and battery 210 comprises BAT1 and battery BAT2, and the quantity of discharge switch 132 is two, and the direct current being respectively used to control battery BAT1 and battery BAT2 exports.Equally, the quantity of discharge switch 132 also can adjust according to the quantity of battery 210, and also can be that the direct current utilizing a discharge switch 132 simultaneously to control battery BAT1 and battery BAT2 exports in other embodiments.
For the discharge switch 132 that the direct current controlling battery BAT1 exports, the control end of discharge switch 132, and the control end 4 of boost chip U4 is the control of discharge end of control of discharge module 130, is connected with control module 140.The input of discharge switch 132 is the control of discharge input of control of discharge module 130, connect the positive pole of battery BAT1, the output of discharge switch 132 connects the input 5 of boost chip U4, the output 1 of boost chip U4 is the control of discharge output of control of discharge module 130, the power end VCC of connection universal serial bus interface USB1A.Control of discharge module 130 also can comprise the diode D8 being just connected to boost chip U4 output 1, and the output 1 of boost chip U4, by the power end VCC of diode D8 connection universal serial bus interface USB1A, prevents electric current backflow.
Control of discharge module 130 also can comprise resistance R24, resistance R25, resistance R26, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12 and inductance L 1.The port 6 of boost chip U4 is by resistance R24 ground connection, and the output 1 of boost chip U4 connects the input 5 of boost chip U4 by inductance L 1.Resistance R25 and resistance R26 connects, and common port connects the port 3 of boost chip U4, and the other end of resistance R25 connects the negative pole of diode D8, the other end ground connection of resistance R26.Electric capacity C9 is all connected the input 5 of boost chip U4 with electric capacity C10 one end, the equal ground connection of the other end, carries out filtering to the direct current that the input 5 of boost chip U4 accesses.Electric capacity C11 is all connected the negative pole of diode D8 with one end of electric capacity C12, the equal ground connection of the other end, carries out filtering for the direct current exported the output 1 of boost chip U4.
Discharge switch 132 conducting when receiving discharge switch Continuity signal, the direct current of the input reception of access discharge switch 132, boost chip U4 is when receiving boosting enable signal, carry out boosting to the direct current of discharge switch 132 access process and export discharge and recharge port 110 to, make portable power source be in discharge mode.
Further, equally for the discharge switch 132 that the direct current controlling battery BAT1 exports, discharge switch 132 can comprise the 3rd switching tube Q4, the 4th switching tube Q2 and the second bias resistance R18.The input of the 3rd switching tube Q4 is the input of discharge switch 132, connects the positive pole of battery BAT1.The control end of the 3rd switching tube Q4 connects the positive pole of battery BAT1 and battery BAT2 by the second bias resistance R18, the output of the 3rd switching tube Q4 is the output of discharge switch 132, connects the input 5 of boost chip U4.
In the present embodiment, the charge-discharge controller of portable power source also can comprise the diode D6 being just connected to battery BAT1 positive pole, and is just being connected to the diode D7 of battery BAT2 positive pole.The control end of the 3rd switching tube Q4 is connected with the positive pole of diode D6 and BAT1 by the second bias resistance R18, is connected with the positive pole of diode D7 and BAT2 by the second bias resistance R18.Diode D6 and diode D7 is used for after the 3rd switching tube Q4 conducting, prevents the positive pole of electric current backflow telegram in reply pond BAT1 and battery BAT2.
The control end of the 4th switching tube Q2 is the control end of discharge switch 132, and the input of the 4th switching tube Q2 connects the control end of the 3rd switching tube Q4, the output head grounding of the 4th switching tube Q2.
In the present embodiment, the 3rd switching tube Q4 is the P channel MOS tube of DTS2301 model, and the 4th switching tube Q2 is the NPN type triode of S8050 model.The model of the 3rd switching tube Q4 and the 4th switching tube Q2 is not unique, and P channel MOS tube can replace by PNP type triode, and NPN type triode can be replaced by N-channel MOS pipe belt.
Be appreciated that the concrete structure of discharge switch 132 is not unique yet, only need meet the conducting when its control end receives discharge switch Continuity signal.
Wherein in an embodiment, control command is low level signal, and as shown in Figure 3 C, control module 140 comprises control chip U1 and pressurizer U3.
Control chip U1 connects discharge and recharge port 110, the control end of charge control module 120 and the control of discharge end of control of discharge module 130, for after receiving low level signal, judge whether the DC voltage that discharge and recharge port 110 inputs is more than or equal to preset voltage value, if then send the control end of charging control signal to charge control module 120, then send the control of discharge end of discharge control signal to control of discharge module 130 if not; And quit work after again receiving low level signal.Whether namely work by sending low level signal control control chip U1 in the present embodiment, be appreciated that the difference according to the control chip U1 adopted, control command also can be different.
The input VIN of pressurizer U3 is for accessing direct current, and the output VOUT connection control chip U1 of pressurizer U3, pressurizer U3 are used for exporting control chip U1 to, for control chip U1 provides operating voltage to after the direct current voltage stabilizing process of access.The port VSS ground connection of pressurizer U3, port CE connects the input VIN of pressurizer U3.In the present embodiment, the input VIN of pressurizer U3 connects battery 210 positive pole of portable power source, utilizes battery 210 to provide operating voltage for control chip U1.The output VOUT of pressurizer U3 also as power end VCC28, in the charge-discharge controller of portable power source, other modules provide operating voltage.
Particularly, the port one 7 of control chip U1 is for receiving control command, the common port of resistance R27 and resistance R28 in the port 26 connection layout 3A of control chip U1, for gathering the DC voltage that discharge and recharge port 110 inputs, the control end 4 of boost chip U4 in the port 22 connection layout 3A of control chip U1, when DC voltage for inputting at discharge and recharge port 110 is less than preset voltage value, send electric discharge enable signal.The port 8 of control chip U1 and port 7 distinguish port DP/D+ and the port DM/D-of USB (universal serial bus) USB1A in connection layout 3A.
The control end of charge switch 122 in the port 40 connection layout 3B of control chip U1, for when the DC voltage that discharge and recharge port 110 inputs is more than or equal to preset voltage value, sends charge switch Continuity signal.The port 31 connection layout 3B chips U5 of control chip U1 and the control end 8 of chip U6, for when the DC voltage that discharge and recharge port 110 inputs is more than or equal to preset voltage value, send charging enable signal.The port one 9 of control chip U1 and port 20 distinguish the control end of two discharge switches 132 in connection layout 3B, when the DC voltage for inputting at discharge and recharge port 110 is less than preset voltage value, send discharge switch Continuity signal.The port 7 of the port 32 and 35 difference connection layout 3B chips U5 and chip U6 of control chip U1.
Control module can comprise electric capacity C2, electric capacity C3 and electric capacity C4.The port 3 of control chip U1, port 4 and port 6 are all connected the output of pressurizer U3, and by electric capacity C2 ground connection.The port one 1 of control chip U1, port one 3 and port one 4 are all connected the output of pressurizer U3, and by electric capacity C3 ground connection.The port 24 of control chip U1 connects the output of pressurizer U3, and the internal electrical source 5 of control chip U1 passes through electric capacity C4 ground connection, port one 5 and 16 ground connection of control chip U1.
Control module also can comprise diode D5, electric capacity C1 and resistance R12, the positive pole of diode D5 connects discharge and recharge port 110, be specially the power end VCC of USB (universal serial bus) USB1A in connection layout 3A, the negative pole of diode D5 connects input VIN and the port CE of pressurizer U3 by resistance R12.Not enough or break down when not exporting direct current at battery 210 electricity of portable power source, other module for power supply in the charge-discharge controller that the direct current that pressurizer U3 also can utilize discharge and recharge port 110 to access is portable power source, when charging to battery 210, also can reduce the electric quantity consumption of battery 210, accelerate charge efficiency.
Control module also can comprise memory U2, resistance R5 and electric capacity C5, and in the present embodiment, memory is EEPROM (ElectricallyErasableProgrammableRead-OnlyMemory, EEPROM (Electrically Erasable Programmable Read Only Memo)).The port one of the port SCL of memory U2 and port SDA difference connection control chip U1 and port 2, the port SDA of memory U2 connects power end VCC28 by resistance R5.Port E0, the port E1 of memory U2, port E2, port WC and the equal ground connection of port GND, the port VCC of memory U2 connects power end VCC28, and by electric capacity C5 ground connection.Memory U2 controls the program of control chip U1 work for storing, be convenient to debug program.Be appreciated that when after the success of program furnishing, can directly stored in control chip U1, and without the need to being stored in memory U2 again.
Wherein in an embodiment, the charge-discharge controller of portable power source comprises sending module 150, and as shown in Figure 3 C, sending module 150 specifically comprises touch-switch K1, the port one 7 of one end connection control chip U1 of touch-switch K1, the other end ground connection of touch-switch K1.The conducting when touch-switch K1 is pressed, the port one 7 of control chip U1 is dragged down, and control chip U1 starts working; When touch-switch K1 is pressed again, the port one 7 of control chip U1 is dragged down again, and control chip U1 quits work.Control control chip U1 by touch-switch K1 whether to work, convenient and swift.
Continue with reference to Fig. 3 C, the charge-discharge controller of portable power source comprises voltage detection module 160 and display module 170.
Voltage detection module 160 specifically comprises resistance R13, resistance R14 and electric capacity C6, resistance R13 and resistance R14 connects, the other end of resistance R13 is the input of voltage detection module 160, can be the output of discharge switch 132 in connection layout 3B, be connected by the positive pole of discharge switch 132 with battery 210.The common port of resistance R13 and resistance R14 is the output of voltage detection module 160, the port 21 of connection control chip U1, the other end ground connection of resistance R14.One end contact resistance R13 of electric capacity C6 and the common port of resistance R14, other end ground connection.In the present embodiment, voltage detection module 160, for when portable power source is in discharge mode, gathers the galvanic magnitude of voltage of battery 210 output and is sent to control chip U1.Be appreciated that in other embodiments, the input of voltage detection module 160 also can be the positive pole directly connecting battery 210, when portable power source is in charge mode or discharge mode, all can gather the galvanic magnitude of voltage that battery 210 exports.
In the present embodiment, display module 170 comprises display lamp D1, display lamp D2, display lamp D3, display lamp D4, resistance R1, resistance R2, resistance R3 and resistance R4, and in the present embodiment, display lamp D1, display lamp D2, display lamp D3 and display lamp D4 are LED.Display lamp D1, display lamp D2, display lamp D3 are all connected power end VCC28 with the positive pole of display lamp D4, the negative pole of display lamp D1, display lamp D2, display lamp D3 and display lamp D4, respectively by the port 36 of resistance R1, resistance R2, resistance R3 and resistance R4 connection control chip U1, port 37, port 38 and port 39.
The DC voltage value of the output of the battery 210 that control chip U1 gathers according to voltage detection module 160, controls display module 170 and shows corresponding presupposed information, also can quit work lower than during setting voltage value in DC voltage value.Can be specifically:
When the output voltage of battery 210 is 75% to 100% of quota voltage, it is entirely bright that control chip U1 controls display lamp D1, display lamp D2, display lamp D3 and display lamp D4.
When the output voltage of battery 210 is 50% to 75% of quota voltage, it is bright that control chip U1 controls display lamp D1, display lamp D2 and display lamp D3.
When the output voltage of battery 210 is 25% to 50% of quota voltage, it is bright that control chip U1 controls display lamp D1 and display lamp D2.
When the output voltage of battery 210 lower than quota voltage 25% time, control chip U1 controls display lamp D1 flicker.
When the output voltage of battery 210 is lower than 3.0V, control chip U1 quits work.
Quota voltage namely refer to battery 210 charge saturated after output voltage, being appreciated that control mode concrete in an above just embodiment, is not unique.
Wherein in an embodiment, the charge-discharge controller of portable power source comprises current monitoring module 180, as shown in Figure 3A, current monitoring module 180 specifically can comprise monitoring chip U7, resistance R29, resistance R30, resistance R31, resistance R32, resistance R33, resistance R34, resistance R39, resistance R41, resistance R42, electric capacity C13, electric capacity C15, switching tube Q8 and switching tube Q9.The present embodiment breaker in middle pipe Q8 and switching tube Q9 is NPN type triode.
The port one contact resistance R27 of monitoring chip U7 and the common port of resistance R28, and be connected the port 3 of monitoring chip U7 with electric capacity C13 by resistance R29, the earth terminal GND of the port 2 connection universal serial bus interface USB1A of monitoring chip U7, the port 3 of monitoring chip U7 as the output of current monitoring module 180, the port 30 of control chip U1 in connection layout 3C.Resistance 30, electric capacity C15 and resistance R31 connect, and the other end of resistance R30 connects the port 3 of monitoring chip U7, electric capacity C15 is connected the port 5 of monitoring chip U7 with the common port of resistance R31, the earth terminal GND of the other end connection universal serial bus interface USB1A of resistance R31.
After resistance R32, resistance R33 and resistance R34 parallel connection, one end is as the input of current monitoring module 180, connects the port 4 of monitoring chip U7, and connects the negative pole of diode D8 by resistance R26, resistance R25.The earth terminal GND of the other end connection universal serial bus interface USB1A of resistance R32, resistance R33 and resistance R34 parallel connection, and the port 23 of control chip U1 in connection layout 3C.The output of the port 4 connecting valve pipe Q8 of monitoring chip U7, the control end of the port 5 connecting valve pipe Q8 of monitoring chip U7, and the control end passing through resistance R41 connecting valve pipe Q9.The power end VCC of the port 6 connection universal serial bus interface USB1A of monitoring chip U7.The port 25 of control chip U1 in the input connection layout 3C of switching tube Q8, and connect power end VCC28 by resistance R39.The control end of switching tube Q9 is by resistance R42 ground connection, and the input of switching tube Q9 connects the control end 4 of boost chip U4, the output head grounding of switching tube Q9.
The galvanic current value that the output 1 that monitoring chip U7 detects boost chip U4 by resistance R32, resistance R33 and resistance R34 exports, and the port 30 of feedback signal to control chip U1 is sent when current value exceedes pre-set current value.
The charge-discharge controller of portable power source also can comprise diode D20, the power end VCC of the positive pole connection universal serial bus interface USB1A of diode D20, the input VIN of pressurizer U3 in negative pole connection layout 3C.Namely another circuit is provided to provide operating voltage to each module in the direct current utilizing discharge and recharge port 110 and the access charge-discharge controller that is portable power source in the present embodiment.
Present invention also offers a kind of charge/discharge control method of portable power source, as shown in Figure 4, comprise the following steps:
Step S110: receive control command, judges whether the DC voltage that discharge and recharge port inputs meets the charge condition preset.If so, then carry out step S120, then carry out step S130 if not.
Control module specifically can be utilized to receive control command, and carry out judgement operation.Discharge and recharge port is the interface that portable power source carries out discharge and recharge, can adopt USB interface, and specifically can only include a port, portable power source carries out discharge and recharge by same port.Discharge and recharge port also can be comprise two ports, is used separately as charging port and electric discharge port.Charge condition can be different according to the difference of charge-discharge end mouthpiece body structure.If discharge and recharge port only includes a port, charge condition can be that the DC voltage of discharge and recharge port input is more than or equal to preset voltage value, and preset voltage value can adjust according to actual conditions.If discharge and recharge port comprises charging port and electric discharge port two ports, charge condition can be that electric discharge port inputs without direct current.
Step S120: send charging control signal.
Step S130: send discharge control signal.
Control module can be utilized equally to send charging control signal and discharge control signal.Charging control signal can be sent to charge control module in the present embodiment, discharge control signal be sent to control of discharge module.
Step S140: when receiving charging control signal, receive and export discharge and recharge port input direct current.
Charge control module is connected the anode of discharge and recharge port and portable power source.Charge control module when receiving charging control signal, access and export discharge and recharge port input direct current to the battery of portable power source, charge to battery, portable power source is in charge mode.
Step S150: when receiving discharge control signal, exports discharge and recharge port after carrying out boosting process to the direct current of input.
By the anode of control of discharge model calling discharge and recharge port and portable power source.Control of discharge module is when receiving discharge control signal, and carry out exporting discharge and recharge port to after boosting processes to the direct current that the battery of portable power source exports, make the battery discharge of portable power source, portable power source is in discharge mode.
Charge condition, charging control signal and discharge control signal, and similar in the specific works mode of control module, charge control module and control of discharge module and the charge-discharge controller of principle and above-mentioned portable power source, and therefore not to repeat here.
The charge/discharge control method of above-mentioned portable power source, after receiving control command, judges whether the DC voltage that discharge and recharge port inputs meets the charge condition preset, if then send charging control signal.When receiving charging control signal, receive the direct current of discharge and recharge port input and export, for the battery of portable power source charges, portable power source is in charge mode.If the DC voltage of discharge and recharge port input does not meet charge condition, send discharge control signal.When receiving discharge control signal, export discharge and recharge port to after carrying out boosting process to the direct current of input, make the battery discharge of portable power source, portable power source is in discharge mode.The battery charge or discharge of portable power source are controlled according to the DC voltage size of discharge and recharge port input, portable power source can not be in charge mode and discharge mode simultaneously, avoid causing the work of portable power source internal circuitry disorderly, improve the stability in use of portable power source.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.

Claims (6)

1. a charge-discharge controller for portable power source, is characterized in that, comprising:
Discharge and recharge port;
Charge control module, comprise input, output and control end, the input of described charge control module connects described discharge and recharge port, described charge control module, when the control end of described charge control module receives charging control signal, receives the direct current of described discharge and recharge port input and is exported by the output of described charge control module;
Control of discharge module, comprise control of discharge input, control of discharge output and control of discharge end, the control of discharge output of described control of discharge module connects described discharge and recharge port, described control of discharge module is used for when the control of discharge termination of described control of discharge module receives discharge control signal, carries out exporting described discharge and recharge port to after boosting processes to the direct current that the control of discharge input of described control of discharge module inputs;
Control module, connect described discharge and recharge port, the control end of charge control module and the control of discharge end of control of discharge module, for after receiving control command, judge whether the DC voltage that described discharge and recharge port inputs meets the charge condition preset, if then send the control end of described charging control signal to described charge control module, then send the control of discharge end of described discharge control signal to described control of discharge module if not;
Charge-discharge controller also comprises voltage detection module and display module, described voltage detection module comprises input and output, the input of voltage detection module is for connecting the positive pole of battery, the output of described voltage detection module connects described control module, and described display module connects described control module;
Described voltage detection module is for gathering the galvanic magnitude of voltage of the input reception of described voltage detection module and being sent to described control module, and described control module controls presupposed information corresponding to described display module display according to the galvanic magnitude of voltage that described voltage detection module sends;
Charge-discharge controller also comprises current monitoring module, described current monitoring module comprises input and output, the input of described current monitoring module connects the control of discharge output of described control of discharge module, the output of described current monitoring module connects described control module, whether described current monitoring module exceedes pre-set current value for the galvanic current value detecting the output of described control of discharge module, if then send feedback signal to described control module, described control module stops sending described discharge control signal after receiving described feedback signal;
Described charging control signal comprises charge switch Continuity signal and charging enable signal, and described charge control module comprises charge switch and charging chip,
The control end of described charge switch and the control end of charging chip are the control end of described charge control module, the input of described charge switch is the input of described charge control module, the output of described charge switch connects the input of described charging chip, the output of described charging chip is the output of described charge control module, the conducting when receiving described charge switch Continuity signal of described charge switch, access the direct current of described discharge and recharge port input, described charging chip is when receiving described charging enable signal, export the direct current of described charge switch access,
Described discharge control signal comprises discharge switch Continuity signal and boosting enable signal, and described control of discharge module comprises discharge switch and boost chip,
The control end of described discharge switch and the control end of boost chip are the control of discharge end of described control of discharge module, the input of described discharge switch is the control of discharge input of described control of discharge module, the output of described discharge switch connects the input of described boost chip, the output of described boost chip is the control of discharge output of described control of discharge module, the conducting when receiving described discharge switch Continuity signal of described discharge switch, the direct current that the input accessing described discharge switch receives, described boost chip is when receiving described boosting enable signal, the direct current accessed described discharge switch carries out boosting and processes and export described discharge and recharge port to.
2. the charge-discharge controller of portable power source according to claim 1, is characterized in that, described control command is low level signal, and described control module comprises control chip and pressurizer,
Described control chip connects described discharge and recharge port, the control end of charge control module and the control of discharge end of control of discharge module, for after receiving described low level signal, judge whether the DC voltage that described discharge and recharge port inputs is more than or equal to preset voltage value, if then send the control end of described charging control signal to described charge control module, then send the control of discharge end of described discharge control signal to described control of discharge module if not; And quit work after again receiving described low level signal;
The input access direct current of described pressurizer, the output of described pressurizer connects described control chip, and described pressurizer is used for exporting described control chip to, for described control chip provides operating voltage to after the direct current voltage stabilizing process of access.
3. the charge-discharge controller of portable power source according to claim 2, is characterized in that, described control module also comprises diode, and the positive pole of described diode connects described discharge and recharge port, and the negative pole of described diode connects the input of described pressurizer.
4. the charge-discharge controller of portable power source according to claim 1, is characterized in that, described charge switch comprises the first switching tube, second switch pipe and the first bias resistance,
The input of described first switching tube is the input of described charge switch, and connects the control end of described first switching tube by described first bias resistance, and the output of described first switching tube is the output of described charge switch,
The control end of described second switch pipe is the control end of described charge switch, and the input of described second switch pipe connects the input of described second switch pipe, the output head grounding of described second switch pipe by described first bias resistance.
5. the charge-discharge controller of portable power source according to claim 1, is characterized in that, described discharge switch comprises the 3rd switching tube, the 4th switching tube and the second bias resistance,
The input of described 3rd switching tube is the input of described discharge switch, and connects the control end of described 3rd switching tube by described second bias resistance, and the output of described 3rd switching tube is the output of described discharge switch,
The control end of described 4th switching tube is the control end of described discharge switch, and the input of described 4th switching tube connects the control end of described 3rd switching tube, the output head grounding of described 4th switching tube.
6. a charge/discharge control method for the charge-discharge controller of the portable power source as described in claim 1-5 any one, is characterized in that, comprises the following steps:
Receive control command, judge whether the DC voltage that discharge and recharge port inputs meets the charge condition preset;
If so, then send charging control signal, described charging control signal comprises charge switch Continuity signal and charging enable signal;
If not, then send discharge control signal, described discharge control signal comprises discharge switch Continuity signal and boosting enable signal;
When receiving described charging control signal, receive and export described discharge and recharge port input direct current;
When receiving described discharge control signal, after boosting process is carried out to the direct current of input, export described discharge and recharge port to;
Gather the galvanic magnitude of voltage that battery exports, the presupposed information corresponding according to described magnitude of voltage display;
Detect the galvanic current value exporting discharge and recharge port to and whether exceed pre-set current value, if then send feedback signal;
Stop sending described discharge control signal after receiving described feedback signal.
CN201310604086.4A 2013-11-25 2013-11-25 The charge-discharge controller of portable power source and method CN103607010B (en)

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