CN204012830U - Portable power source - Google Patents

Portable power source Download PDF

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Publication number
CN204012830U
CN204012830U CN201420404669.2U CN201420404669U CN204012830U CN 204012830 U CN204012830 U CN 204012830U CN 201420404669 U CN201420404669 U CN 201420404669U CN 204012830 U CN204012830 U CN 204012830U
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CN
China
Prior art keywords
circuit
resistance
output
input
micro controller
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Expired - Fee Related
Application number
CN201420404669.2U
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Chinese (zh)
Inventor
张振江
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XIAMEN GUANGKAI ELECTRONICS CO Ltd
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XIAMEN GUANGKAI ELECTRONICS CO Ltd
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Priority to CN201420404669.2U priority Critical patent/CN204012830U/en
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Publication of CN204012830U publication Critical patent/CN204012830U/en
Expired - Fee Related legal-status Critical Current
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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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The utility model discloses a kind of portable power source, and it comprises MCU micro controller, battery, charging circuit, protective circuit, booster circuit, output control circuit, voltage stabilizing circuit, output interface and input interface.During external charging equipment access output interface, MCU micro controller is controlled battery and is charged for this external charging equipment by charging circuit, protective circuit, booster circuit and output control circuit; When external power supply is connected to input interface, microprocessor controls charging circuit is battery charging.The utility model improves by the circuit structure to portable power source, and the use of its circuit elements device is optimized, and has reduced redundant circuit, has simplified whole circuit structure, thereby reduces the cost of change-over circuit.In addition, by the optimal design to charging circuit, make this portable power source to battery, realize the Charge Management of trickle, constant current, constant voltage, there is good charging effect, improve charge efficiency.

Description

Portable power source
Technical field
The utility model relates to the circuit structure of portable power source, is specifically related to a kind of circuit structure of efficient portable power source.
Background technology
A kind of portable charger that integrates power supply and charge function of portable power source, can charge or standby power supply whenever and wherever possible to digital equipments such as mobile phones.Generally by lithium battery or dry cell as charge storage unit.The battery that is different from interiors of products configuration, is also externally hanging battery.The general multiple power sources adapter that is equipped with, conventionally there is large capacity, multipurpose, volume is little, the life-span is long and the feature such as safe and reliable, is can be to be whenever and wherever possible the functional product of the multiple digital product power supply such as mobile phone, MP3, MP4, mobile phone, PDA, palmtop PC, handheld device or standby charging.
In the circuit module of existing portable power source, it generally comprises charging circuit, booster circuit, output control circuit etc., wherein, charging circuit, booster circuit, output control circuit is generally independent setting, also charge an independent circuit, a circuit boosts, circuit of managing electric quantity, charging control circuit and charge/discharge control circuit are separated, the electric component of its use is many, circuit structure is complicated, therefore change-over circuit cost is high, output current is little and conversion efficiency is low, use after a period of time, can greatly shorten the service time of the battery core of portable power source.In addition, existing portable power source, capacity is generally 2000mAh left and right, function singleness, stand-by power consumption is large.
Utility model content
Therefore, for above-mentioned problem, the utility model proposes a kind of portable power source, its internal circuit structure is improved, reduce redundant circuit, simplify circuit structure, thereby reduce the cost of change-over circuit; In addition, the microcontroller of portable power source is increased to mains switch, when standby, powered-down switch, thus reduce stand-by power consumption.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is, a kind of portable power source, comprise MCU micro controller, battery, charging circuit, protective circuit, booster circuit, output control circuit, voltage stabilizing circuit, output interface and input interface, the input and output of battery are terminated at the input/output terminal of charging circuit, the output of battery is connected to the input of MCU micro controller, the input of charging circuit is connected to the output of MCU micro controller and the output of input interface, the output of input interface is connected to the input of MCU micro controller, the output of charging circuit is connected to the input of protective circuit, the output of protective circuit is connected to the input of booster circuit, the output of booster circuit is connected to the input of voltage stabilizing circuit and the input of output control circuit, the output of voltage stabilizing circuit is connected to the input of MCU micro controller, the output of output control circuit is connected to the input of output interface and the input of MCU micro controller, during external charging equipment access output interface, microprocessor controls battery charges for this external charging equipment by charging circuit, protective circuit, booster circuit and output control circuit, when external power supply is connected to input interface, microprocessor controls charging circuit is battery charging.
Further, this portable power source also comprises LCD display interface, and the input of this LCD display interface is connected to the output of MCU micro controller, for connecting LCD display.
Further, this portable power source also comprises backlight lamp control circuit, and the input of this backlight lamp control circuit is connected to the output of MCU micro controller, for the control to backlight.Concrete, this backlight lamp control circuit comprises resistance R 2, resistance R 9, triode Q9 and light-emitting diode D2, the collector electrode of triode Q9 is connected to voltage stabilizing circuit after series resistance R2 and light-emitting diode D2 successively, after the base series resistor R9 of triode Q9, be connected to MCU micro controller, the grounded emitter of triode Q9.Light-emitting diode D2 is as backlight, and whether MCU micro controller controls the light on and off of backlight light-emitting diode D2 by controlling the conducting of triode Q9.
Further, described MCU micro controller is provided with switch, by the opening/closing of this switch, realizes opening or closing MCU micro controller.Like this, in standby or when not needing to use, can close MCU micro controller by closing this switch, thus energy efficient.
Portable power source of the present utility model can connect input interface by external power source the battery of self is charged, and for connecting external charging equipment (the electronic equipment to be charged being attached thereto) power supply of output interface.
Wherein, the work of the major control of MCU micro controller and the whole circuit of management, comprises charging control, control of discharge, while filling, puts control, output display content-control.In the utility model, single-chip microcomputer and peripheral circuit thereof that MCU microcontroller is is HT46R066B_28 by model are realized.When the battery of self is charged, the access of external charger by the state of MCU micro controller Intelligent Measurement input interface, detected, and the state of charge of battery is detected, according to the state of charge of current battery, make analysis, and send corresponding instruction and by charging circuit, battery is carried out the Charge Management of trickle, constant current, constant voltage.Wherein, this charging circuit comprises metal-oxide-semiconductor Q1, triode Q10, diode D6, capacitor C 4, capacitor C 6, capacitor C 16, capacitor C 10, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 21, resistance R 11, resistance R 10 and resistance R 6, resistance R 16 is connected the A end (anode) of input interface and diode D6, the other end ground connection after its parallel connection with the one end after capacitor C 4 parallel connections, one end of K end (negative electrode) contact resistance R17 of diode D6 and the S level (source class) of metal-oxide-semiconductor Q1, the C level (collector electrode) of G level (grid) the connecting triode Q10 of the other end of resistance R 17 and metal-oxide-semiconductor Q1, the D level (drain electrode) of metal-oxide-semiconductor Q1 connects by resistance R 11, one end of the bleeder circuit that resistance R 10 and resistance R 6 compose in parallel, the other end of bleeder circuit connects anode and one end of capacitor C 16 and one end of capacitor C 10 (capacitor C 16 and capacitor C 10 are connected in parallel), the other end of the other end of capacitor C 16 and capacitor C 10 be connected battery negative pole and, one end of one end of resistance R 21 and resistance R 18, the other end of resistance R 18 is leaded up to capacitor C 6 ground connection, another road is connected to MCU micro controller, E level (emitter) ground connection of the other end of resistance R 21 and triode Q10, connects MCU micro controller after B level (base stage) the series resistance R15 of triode Q10.By MCU micro controller, detect the state of input interface and the state of charge of battery, according to testing result and the built-in threshold parameter of MCU micro controller, thereby send corresponding instruction, triode Q10 and metal-oxide-semiconductor Q1 are controlled, and by resistance R 16 and capacitor C 4 filter circuit of realizing in parallel, the bleeder circuit that resistance R 11, resistance R 10 and resistance R 6 compose in parallel, and capacitor C 16 and the capacitor C 10 ripple filtering circuit of realizing in parallel, thereby realize control charging circuit, battery is carried out to the Charge Management of trickle, constant current, constant voltage.
The utility model improves by the circuit structure to portable power source, and the use of its circuit elements device is optimized, and has reduced redundant circuit, has simplified whole circuit structure, thereby reduces the cost of change-over circuit; Wherein, special, the optimal design to charging circuit, makes this portable power source to battery, realize the Charge Management of trickle, constant current, constant voltage, has good charging effect, improves charge efficiency.In addition, microcontroller is set up to switch, when standby, closing switch, thus reduce stand-by power consumption.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the embodiment 1 of portable power source of the present utility model;
Fig. 2 is the circuit block diagram of the embodiment 2 of portable power source of the present utility model;
Fig. 3 is the circuit theory diagrams of the charging circuit of embodiment 2 of the present utility model;
Fig. 4 is the circuit theory diagrams of the whole portable power source of embodiment 2 of the present utility model.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
Portable power source of the present utility model can connect input interface by external power source the battery of self is charged, and for connecting external charging equipment (the electronic equipment to be charged being attached thereto) power supply of output interface.
embodiment 1
In the present embodiment, referring to Fig. 1, portable power source of the present utility model, comprises MCU micro controller, battery, charging circuit, protective circuit, booster circuit, output control circuit, voltage stabilizing circuit, output interface and input interface.
Its annexation is described below: the input and output of battery are terminated at the input/output terminal of charging circuit, the output of battery is connected to the input of MCU micro controller, the input of charging circuit is connected to the output of MCU micro controller and the output of input interface, the output of input interface is connected to the input of MCU micro controller, the output of charging circuit is connected to the input of protective circuit, the output of protective circuit is connected to the input of booster circuit, the output of booster circuit is connected to the input of voltage stabilizing circuit and the input of output control circuit, the output of voltage stabilizing circuit is connected to the input of MCU micro controller, the output of output control circuit is connected to the input of output interface and the input of MCU micro controller, during external charging equipment access output interface, microprocessor controls battery charges for this external charging equipment by charging circuit, protective circuit, booster circuit and output control circuit, when external power supply is connected to input interface, microprocessor controls charging circuit is battery charging.
embodiment 2
Except all circuit of embodiment 1, in the present embodiment, referring to Fig. 2, this portable power source also comprises LCD display interface and backlight lamp control circuit.Wherein, the input of this LCD display interface is connected to the output of MCU micro controller, for connecting LCD display.The input of this backlight lamp control circuit is connected to the output of MCU micro controller, for the control to backlight.
Portable power source of the present utility model, when the battery of self is charged, the access of external charger by the state of MCU micro controller Intelligent Measurement input interface, detected, and the state of charge of battery is detected, according to the state of charge of current battery, make analysis, and send corresponding instruction and by charging circuit, battery is carried out the Charge Management of trickle, constant current, constant voltage.
Wherein, referring to Fig. 3, this charging circuit comprises metal-oxide-semiconductor Q1, triode Q10, diode D6, capacitor C 4, capacitor C 6, capacitor C 16, capacitor C 10, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 21, resistance R 11, resistance R 10 and resistance R 6, resistance R 16 is connected the A end (anode) of input interface and diode D6, the other end ground connection after its parallel connection with the one end after capacitor C 4 parallel connections, one end of K end (negative electrode) contact resistance R17 of diode D6 and the S level (source class) of metal-oxide-semiconductor Q1, the C level (collector electrode) of G level (grid) the connecting triode Q10 of the other end of resistance R 17 and metal-oxide-semiconductor Q1, the D level (drain electrode) of metal-oxide-semiconductor Q1 connects by resistance R 11, one end of the bleeder circuit that resistance R 10 and resistance R 6 compose in parallel, the other end of bleeder circuit connects anode and one end of capacitor C 16 and one end of capacitor C 10 (capacitor C 16 and capacitor C 10 are connected in parallel), the other end of the other end of capacitor C 16 and capacitor C 10 be connected battery negative pole and, one end of one end of resistance R 21 and resistance R 18, the other end of resistance R 18 is leaded up to capacitor C 6 ground connection, another road is connected to MCU micro controller, E level (emitter) ground connection of the other end of resistance R 21 and triode Q10, connects MCU micro controller after B level (base stage) the series resistance R15 of triode Q10.Wherein, MCU micro controller is controlled the operating state of this charging circuit by controlling the break-make of triode Q10 and metal-oxide-semiconductor Q1.Capacitor C 16 and capacitor C 10 are connected in parallel, play the effect of the clutter that reduces ripple and filtering high frequency, here do not use jumbo electrochemical capacitor, because large electrochemical capacitor exists larger induction reactance, therefore filter effect to high frequency clutter is bad, adopts capacitor C 16 that two capacity are little and C10 to compose in parallel the larger electric capacity of capacity here and realizes better filter effect.Diode D6 is fly-wheel diode, and circuit has been exported to afterflow effect, keeps the continuity of output current, meanwhile, also plays reverse isolation effect, prevents that the high voltage of output from oppositely affecting input.This circuit is compared with the charging circuit of portable power source of the prior art, it combines several functions, by MCU micro controller, detect the state of input interface and the state of charge of battery, according to testing result and the built-in threshold parameter of MCU micro controller, thereby send corresponding instruction, triode Q10 and metal-oxide-semiconductor Q1 are controlled, and by resistance R 16 and capacitor C 4 filter circuit of realizing in parallel, resistance R 11, the bleeder circuit that resistance R 10 and resistance R 6 compose in parallel, and capacitor C 16 and the capacitor C 10 ripple filtering circuit of realizing in parallel, thereby realize control charging circuit battery is carried out to trickle, constant current, the Charge Management of constant voltage.In addition, in the present embodiment, this charging circuit is by pulse width modulation, the discharge process of battery to be boosted or charging process is carried out step-down.Adopt pulse width modulation, the charging and discharging currents in charge and discharge process is larger, and the time discharging and recharging reduces greatly.Meanwhile, adopt the conversion efficiency of aforesaid way better, generate heat lower.
As a more detailed implementation, referring to Fig. 4, in the present embodiment, single-chip microcomputer and peripheral circuit thereof that MCU microcontroller is is HT46R066B_28 by model are realized, the work of the major control of MCU micro controller and the whole circuit of management, comprises charging control, control of discharge, while filling, puts control, output display content-control.Booster circuit adopts step-up DC/DC control chip and the peripheral circuit thereof that model is S-8367A21I-M6T1U2 to realize, and its voltage range 3 ~ 4.2V by battery boosts to burning voltage 5V.Step-up DC/DC control chip is a kind of CMOS step-up DC/DC controller consisting of reference voltage source, oscillating circuit, error amplifying circuit, phase compensating circuit, current limit circuit, short-circuit protection circuit, pwm control circuit etc.Corresponding port is opened or closed in the instruction that output control circuit is sent by MCU micro controller is export or close.Voltage stabilizing circuit provides the stable operating voltage of 3.0V for MCU micro controller.Input interface is used for receiving external power source and is transferred to charging circuit and MCU micro controller, and wherein, external power source can be with the power-supply device of USB interface or power supply adaptor.In the present embodiment, referring to Fig. 4, the USB interface that this input interface is Micro_M_C.Certainly, input interface also can be set to other USB interface.Output interface is for being delivered to the electric weight of portable power source the external equipment to be charged that connects this output interface, and it can be the electronic equipment with USB interface.Protective circuit to lithium battery overcharge, overdischarge and overcurrent protection.LCD display interface is used for connecting LCD display.Backlight lamp control circuit is for the control to backlight.
Wherein, this backlight lamp control circuit comprises resistance R 2, resistance R 9, triode Q9 and light-emitting diode D2, the collector electrode of triode Q9 is connected to voltage stabilizing circuit after series resistance R2 and light-emitting diode D2 successively, after the base series resistor R9 of triode Q9, be connected to MCU micro controller, the grounded emitter of triode Q9.Light-emitting diode D2 is as backlight, and whether MCU micro controller controls the light on and off of backlight light-emitting diode D2 by controlling the conducting of triode Q9.
In addition, in order to reduce stand-by power consumption, MCU micro controller is provided with switch, by the opening/closing of this switch, realizes opening or closing MCU micro controller.Like this, in standby or when not needing to use, can close MCU micro controller by closing this switch, thus energy efficient.
In the utility model, MCU micro controller is by the detection to external equipment (equipment of access input interface or output interface), thereby send charging control signal or discharge control signal, and then control charging circuit battery is carried out to corresponding charging control or control of discharge.Therefore, in circuit of the present utility model, without charging control circuit and charge/discharge control circuit are set respectively, its circuit structure is comparatively simple, is conducive to realize the miniaturization development of portable power source.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; within not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection range of the present utility model.

Claims (6)

1. a portable power source, is characterized in that: comprise MCU micro controller, battery, charging circuit, protective circuit, booster circuit, output control circuit, voltage stabilizing circuit, output interface and input interface;
The input and output of battery are terminated at the input/output terminal of charging circuit, the output of battery is connected to the input of MCU micro controller, the input of charging circuit is connected to the output of MCU micro controller and the output of input interface, the output of input interface is connected to the input of MCU micro controller, the output of charging circuit is connected to the input of protective circuit, the output of protective circuit is connected to the input of booster circuit, the output of booster circuit is connected to the input of voltage stabilizing circuit and the input of output control circuit, the output of voltage stabilizing circuit is connected to the input of MCU micro controller, the output of output control circuit is connected to the input of output interface and the input of MCU micro controller,
During external charging equipment access output interface, MCU microprocessor controls battery charges for this external charging equipment by charging circuit, protective circuit, booster circuit and output control circuit; When external power supply is connected to input interface, microprocessor controls charging circuit is battery charging.
2. portable power source according to claim 1, is characterized in that: this portable power source also comprises LCD display interface, and the input of this LCD display interface is connected to the output of MCU micro controller, for connecting LCD display.
3. portable power source according to claim 1, is characterized in that: this portable power source also comprises backlight lamp control circuit, and the input of this backlight lamp control circuit is connected to the output of MCU micro controller, for the control to backlight.
4. portable power source according to claim 3, it is characterized in that: this backlight lamp control circuit comprises resistance R 2, resistance R 9, triode Q9 and light-emitting diode D2, the collector electrode of triode Q9 is connected to voltage stabilizing circuit after series resistance R2 and light-emitting diode D2 successively, after the base series resistor R9 of triode Q9, be connected to MCU micro controller, the grounded emitter of triode Q9; Whether MCU micro controller controls the light on and off of light-emitting diode D2 by controlling the conducting of triode Q9.
5. portable power source according to claim 1, is characterized in that: described MCU micro controller is provided with switch, by the opening/closing of this switch, realizes opening or closing MCU micro controller.
6. portable power source according to claim 1, it is characterized in that: described charging circuit comprises metal-oxide-semiconductor Q1, triode Q10, diode D6, capacitor C 4, capacitor C 6, capacitor C 16, capacitor C 10, resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 21, resistance R 11, resistance R 10 and resistance R 6, resistance R 16 is connected the A end of input interface and diode D6, the other end ground connection after its parallel connection with the one end after capacitor C 4 parallel connections, one end of the K end contact resistance R17 of diode D6 and the S level of metal-oxide-semiconductor Q1, the C level of the G level connecting triode Q10 of the other end of resistance R 17 and metal-oxide-semiconductor Q1, the D level of metal-oxide-semiconductor Q1 connects by resistance R 11, one end of the bleeder circuit that resistance R 10 and resistance R 6 compose in parallel, the other end of bleeder circuit connects anode and one end of capacitor C 16 and one end of capacitor C 10, the other end of the other end of capacitor C 16 and capacitor C 10 be connected battery negative pole and, one end of one end of resistance R 21 and resistance R 18, the other end of resistance R 18 is leaded up to capacitor C 6 ground connection, another road is connected to MCU micro controller, the E level ground connection of the other end of resistance R 21 and triode Q10, connects MCU micro controller after the B level series resistance R15 of triode Q10.
CN201420404669.2U 2014-07-22 2014-07-22 Portable power source Expired - Fee Related CN204012830U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578264A (en) * 2014-12-24 2015-04-29 东莞市兴开泰电子科技有限公司 Automatic load identification circuit of mobile power supply
CN105978101A (en) * 2016-06-30 2016-09-28 联想(北京)有限公司 Portable power source charging method, power source adapter and portable power source
US20170040816A1 (en) * 2015-04-09 2017-02-09 Boe Technology Group Co., Ltd. Power supply circuit and power supply method
CN107332310A (en) * 2017-07-27 2017-11-07 无锡昊瑜节能环保设备有限公司 A kind of type voltage regulation energy-saving type mobile power supply

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578264A (en) * 2014-12-24 2015-04-29 东莞市兴开泰电子科技有限公司 Automatic load identification circuit of mobile power supply
CN104578264B (en) * 2014-12-24 2018-08-10 东莞市兴开泰电子科技有限公司 Mobile power automatic recognition of load circuit
US20170040816A1 (en) * 2015-04-09 2017-02-09 Boe Technology Group Co., Ltd. Power supply circuit and power supply method
US9859734B2 (en) * 2015-04-09 2018-01-02 Boe Technology Group Co., Ltd. Power supply circuit and power supply method
CN105978101A (en) * 2016-06-30 2016-09-28 联想(北京)有限公司 Portable power source charging method, power source adapter and portable power source
CN105978101B (en) * 2016-06-30 2019-02-05 联想(北京)有限公司 A kind of mobile power source charging method, power supply adaptor and mobile power source
CN107332310A (en) * 2017-07-27 2017-11-07 无锡昊瑜节能环保设备有限公司 A kind of type voltage regulation energy-saving type mobile power supply

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PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
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Denomination of utility model: Portable mobile power supplier

Effective date of registration: 20160505

Granted publication date: 20141210

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Guangkai Electronics Co., Ltd.

Registration number: 2016990000355

Denomination of utility model: Portable mobile power supplier

Effective date of registration: 20160505

Granted publication date: 20141210

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Guangkai Electronics Co., Ltd.

Registration number: 2016990000355

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20171017

Granted publication date: 20141210

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Guangkai Electronics Co., Ltd.

Registration number: 2016990000355

Date of cancellation: 20171017

Granted publication date: 20141210

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Guangkai Electronics Co., Ltd.

Registration number: 2016990000355

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141210

Termination date: 20190722