CN203645353U - Voltage adaptive solar energy charger with MPPT function - Google Patents

Voltage adaptive solar energy charger with MPPT function Download PDF

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Publication number
CN203645353U
CN203645353U CN201320665700.3U CN201320665700U CN203645353U CN 203645353 U CN203645353 U CN 203645353U CN 201320665700 U CN201320665700 U CN 201320665700U CN 203645353 U CN203645353 U CN 203645353U
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CN
China
Prior art keywords
capacitor
positive
negative polarity
semiconductor
voltage
Prior art date
Application number
CN201320665700.3U
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Chinese (zh)
Inventor
王念春
吴晓玉
秦天平
王晓龙
丁凯
滕春阳
江志明
Original Assignee
东南大学
江苏英伟特新能源技术有限公司
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Application filed by 东南大学, 江苏英伟特新能源技术有限公司 filed Critical 东南大学
Priority to CN201320665700.3U priority Critical patent/CN203645353U/en
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Publication of CN203645353U publication Critical patent/CN203645353U/en

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Abstract

The utility model relates to a voltage adaptive solar energy charger with a MPPT function; the voltage adaptive solar energy charger comprises a solar cell panel, a DC-DC conversion module and a MPPT control module; a control end of the DC-DC conversion module is connected with the MPPT control module; an input end of the DC-DC conversion module is connected with positive and negative polarity ends of the solar cell panel; an output end of the DC-DC module is connected with positive and negative polarity ends of portable charging equipment; the MPPT control module comprises a MCU control unit, and a first voltage detection unit, a second voltage detection unit, a temperature detection unit, an auxiliary power supply and a liquid crystal display unit all connected with the MCU control unit; the auxiliary power supply and the first voltage detection unit are connected with the positive and negative polarity ends of the solar cell panel; the second voltage detection unit is connected with the positive and negative polarity ends of the portable charging equipment. The voltage adaptive solar energy charger has voltage adaptive function, is high in solar utilization rate, fast in charging speed, and can charge a plurality of portable instrument cells.

Description

A kind of voltage adaptive solar charger with MPPT function

Technical field

The utility model relates to solar charger technical field, particularly relates to a kind of voltage adaptive solar charger with MPPT function.

Background technology

At present, most of portable type electronic products are battery-powered, and the electric weight of battery normally obtains from electrical network by charger.In the situation that there is no civil power, bring inconvenience to people's work, life because battery electric quantity is not enough.

On market, also have a lot of chargers now, for example general charger for mobile phone can only utilize city's electric resources, and mobile phone does not have suddenly electricity in the time that cellie places oneself in the midst of field, wilderness or Travel Adventure emergency, and mobile phone cannot be realized charging, cannot get in touch with the external world.And the charger of specific type-as solar charger, generally can only provide a kind of charging voltage, only can be to same or of a sort electronic equipment charging, versatility is poor.And the solar energy utilization ratio of existing solar charger is low, there is no maximum limit land productivity luminous energy, make charging rate slower.

Therefore,, for prior art deficiency, provide solar charger a kind of voltage adaptive, that solar energy utilization ratio is high very necessary.

Utility model content

The purpose of this utility model is to overcome the defect that prior art exists, and the voltage adaptive solar charger with MPPT function that a kind of solar energy utilization ratio is high is provided.

The technical scheme that realizes the utility model object is: a kind of voltage adaptive solar charger with MPPT function, comprises solar panel, DC-DC conversion module and MPPT control module; The control end of described DC-DC conversion module connects MPPT control module, and the input of DC-DC conversion module connects the positive-negative polarity end of solar panel, and the output of DC-DC module connects the positive-negative polarity end of portable charged equipment; Described MPPT control module comprises MCU control unit, and the first voltage detection unit, second voltage detecting unit, temperature measuring unit, accessory power supply and the liquid crystal display that are connected with MCU control unit; Described accessory power supply and the first voltage detection unit are all connected the positive-negative polarity end of solar panel; Described second voltage detecting unit is connected to the positive-negative polarity end of portable charged equipment.

Described in technique scheme, DC-DC conversion module is synchronous rectification Buck circuit, and DC-DC conversion module comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, capacitor C 2, capacitor C 3, capacitor C 4, diode D1 and inductance L; The drain D of described metal-oxide-semiconductor Q1 connects the positive ends of solar panel; The drain D of the negative polarity end of described diode D1, the positive ends of capacitor C 3, metal-oxide-semiconductor Q2, the positive ends of capacitor C 4 are connected in the source S of metal-oxide-semiconductor Q1 after being connected with the drain D of metal-oxide-semiconductor Q3, connect the negative polarity end of solar panel after the negative polarity end of the negative polarity end of the positive ends of diode D1, capacitor C 3, the source S of metal-oxide-semiconductor Q2 and capacitor C 4 is connected; The two ends of described inductance L connect respectively the drain D of metal-oxide-semiconductor Q2 and the positive ends of capacitor C 4; The positive-negative polarity end of described portable set connects respectively the source S of metal-oxide-semiconductor Q3 and the negative polarity end of solar panel.

Described in technique scheme, accessory power supply has power supply chip LM2841; The positive ends of described solar panel connects Vin end and the SHDN end of power supply chip LM2841 by diode D2; Between the SHDN end of described power supply chip LM2841 and GND end, be connected with the capacitor C 5 and the capacitor C 6 that are arranged in parallel, between CB end and FB end, be connected with capacitor C 7, inductance L 4 and resistance R 4 in turn; SW end connects the negative polarity end of capacitor C 7, and SW end is connected to GND end by the electric capacity D3 of reverse setting; FB end is connected to GND end by resistance R 3; Between the tie point of described inductance L 4, resistance R 2 and GND end, be connected with the capacitor C 8 and the capacitor C 9 that are arranged in parallel.

Inductance L described in technique scheme in DC-DC conversion module is SMD inductance.

Described in technique scheme, liquid crystal display is COG liquid crystal.

Described in technique scheme, MCU control unit is ARM or DSP.

Adopt after technique scheme, the utlity model has following positive effect:

(1) inductance element in DC-DC module of the present utility model uses chip inductor, and charger volume is greatly reduced, and is easy to carry;

(2) the utility model can be realized MPPT function, and solar energy utilization ratio is high, and charging rate is fast;

(3) the utlity model has voltage adaptive function, can give the multiple portable set battery charging such as mobile phone, camera.

Accompanying drawing explanation

For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein below

Fig. 1 is theory diagram of the present utility model;

Fig. 2 is the circuit diagram of accessory power supply of the present utility model;

Attached number in the figure is: solar panel 1, DC-DC conversion module 2, MPPT control module 3, MCU control unit 31, the first voltage detection unit 32, second voltage detecting unit 33, temperature measuring unit 34, accessory power supply 35, liquid crystal display 36.

Embodiment

(embodiment 1)

See Fig. 1, the utility model comprises solar panel 1, DC-DC conversion module 2 and MPPT control module 3; The control end of DC-DC conversion module 2 connects MPPT control module 3, and the input of DC-DC conversion module 2 connects the positive-negative polarity end of solar panel 1, and the output of DC-DC module connects the positive-negative polarity end of portable charged equipment; MPPT control module 3 comprises MCU control unit 31, and the first voltage detection unit 32, second voltage detecting unit 33, temperature measuring unit 34, accessory power supply 35 and the liquid crystal display 36 that are connected with MCU control unit 31; Accessory power supply 35 and the first voltage detection unit 32 are all connected the positive-negative polarity end of solar panel 1; Second voltage detecting unit 33 is connected to the positive-negative polarity end of portable charged equipment, and MCU control unit 31 is ARM or DSP, and liquid crystal display 36 is COG liquid crystal, and temperature measuring unit 34 can detect ambient temperature around and show on liquid crystal display 36.

DC-DC conversion module 2 is synchronous rectification Buck circuit, and DC-DC conversion module 2 comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, capacitor C 2, capacitor C 3, capacitor C 4, diode D1 and inductance L; The drain D of metal-oxide-semiconductor Q1 connects the positive ends of solar panel 1; The drain D of the negative polarity end of diode D1, the positive ends of capacitor C 3, metal-oxide-semiconductor Q2, the positive ends of capacitor C 4 are connected in the source S of metal-oxide-semiconductor Q1 after being connected with the drain D of metal-oxide-semiconductor Q3, connect the negative polarity end of solar panel 1 after the negative polarity end of the negative polarity end of the positive ends of diode D1, capacitor C 3, the source S of metal-oxide-semiconductor Q2 and capacitor C 4 is connected; Inductance L in DC-DC conversion module 2 is SMD inductance, and the two ends of inductance L connect respectively the drain D of metal-oxide-semiconductor Q2 and the positive ends of capacitor C 4; The positive-negative polarity end of portable set connects respectively the source S of metal-oxide-semiconductor Q3 and the negative polarity end of solar panel 1.

See Fig. 2, accessory power supply 35 has power supply chip LM2841; LM2841 chip is wide voltage input, a power supply chip of burning voltage output, it does large output current can reach 300mA, and maximum operation frequency is 1.25MHz, its input voltage range is 4.5V-42V, and its output voltage can be given described MCU control unit and liquid crystal display power supply.The positive ends of solar panel 1 connects Vin end and the SHDN end of power supply chip LM2841 by diode D2; Between the SHDN end of power supply chip LM2841 and GND end, be connected with the capacitor C 5 and the capacitor C 6 that are arranged in parallel, between CB end and FB end, be connected with capacitor C 7, inductance L 4 and resistance R 4 in turn; SW end connects the negative polarity end of capacitor C 7, and SW end is connected to GND end by the electric capacity D3 of reverse setting; FB end is connected to GND end by resistance R 3; Between the tie point of inductance L 4, resistance R 2 and GND end, be connected with the capacitor C 8 and the capacitor C 9 that are arranged in parallel.

A using method for voltage adaptive solar charger with MPPT function, is used step as follows:

1) start;

2) initialization MCU chip;

3) MCU control unit 31 control voltage detection unit start detect, the voltage of the detection solar panel 1 of the first voltage detection unit 32, second voltage detecting unit 33 detects the voltage of portable set;

4) information of voltage detecting is delivered to MCU control unit 31 by voltage detection unit, and MCU control unit 31 compares solar panel 1 voltage and portable set cell voltage;

5) if solar panel 1 voltage is greater than by charging device cell voltage, control switch pipe Q1 is open-minded, allow DC-DC conversion module 2 to charge to charging equipment battery, MCU control unit 31 judges by the electric pressure of charging device battery according to the information of voltage receiving, thereby change the output voltage of corresponding parameter control DC/DC conversion module, realize the charging of safety and precise, MCU control unit 31 is controlled DC-DC conversion module 2 and is realized MPPT maximum power point tracking MPPT function simultaneously;

If solar panel 1 voltage is not more than by charging device cell voltage, control switch pipe Q1 turn-offs, to prevent that charging equipment battery from discharging to charger, thereby protection DC-DC conversion module 2 and solar energy MCU control module, immediately the information such as the voltage of solar panel 1 voltage, portable set battery, ambient temperature and real time charging power are issued to LCD MODULE, and control COG liquid crystal and show;

6) shutdown.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (6)

1. the voltage adaptive solar charger with MPPT function, is characterized in that: comprise solar panel (1), DC-DC conversion module (2) and MPPT control module (3); The control end of described DC-DC conversion module (2) connects MPPT control module (3), the input of DC-DC conversion module (2) connects the positive-negative polarity end of solar panel (1), and the output of DC-DC module connects the positive-negative polarity end of portable charged equipment; Described MPPT control module (3) comprises MCU control unit (31), and the first voltage detection unit (32), second voltage detecting unit (33), temperature measuring unit (34), accessory power supply (35) and the liquid crystal display (36) that are connected with MCU control unit (31); Described accessory power supply (35) and the first voltage detection unit (32) are all connected the positive-negative polarity end of solar panel (1); Described second voltage detecting unit (33) is connected to the positive-negative polarity end of portable charged equipment.
2. the voltage adaptive solar charger with MPPT function according to claim 1, it is characterized in that: described DC-DC conversion module (2) is synchronous rectification Buck circuit, and DC-DC conversion module (2) comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, capacitor C 2, capacitor C 3, capacitor C 4, diode D1 and inductance L; The drain D of described metal-oxide-semiconductor Q1 connects the positive ends of solar panel (1); The drain D of the negative polarity end of described diode D1, the positive ends of capacitor C 3, metal-oxide-semiconductor Q2, the positive ends of capacitor C 4 are connected in the source S of metal-oxide-semiconductor Q1 after being connected with the drain D of metal-oxide-semiconductor Q3, connect the negative polarity end of solar panel (1) after the negative polarity end of the negative polarity end of the positive ends of diode D1, capacitor C 3, the source S of metal-oxide-semiconductor Q2 and capacitor C 4 is connected; The two ends of described inductance L connect respectively the drain D of metal-oxide-semiconductor Q2 and the positive ends of capacitor C 4; The positive-negative polarity end of described portable set connects respectively the source S of metal-oxide-semiconductor Q3 and the negative polarity end of solar panel (1).
3. the voltage adaptive solar charger with MPPT function according to claim 2, is characterized in that: described accessory power supply (35) has power supply chip LM2841; The positive ends of described solar panel (1) connects Vin end and the SHDN end of power supply chip LM2841 by diode D2; Between the SHDN end of described power supply chip LM2841 and GND end, be connected with the capacitor C 5 and the capacitor C 6 that are arranged in parallel, between CB end and FB end, be connected with capacitor C 7, inductance L 4 and resistance R 4 in turn; SW end connects the negative polarity end of capacitor C 7, and SW end is connected to GND end by the electric capacity D3 of reverse setting; FB end is connected to GND end by resistance R 3; Between the tie point of described inductance L 4, resistance R 2 and GND end, be connected with the capacitor C 8 and the capacitor C 9 that are arranged in parallel.
4. the voltage adaptive solar charger with MPPT function according to claim 2, is characterized in that: the inductance L in described DC-DC conversion module (2) is SMD inductance.
5. the voltage adaptive solar charger with MPPT function according to claim 3, is characterized in that: described liquid crystal display (36) is COG liquid crystal.
6. the voltage adaptive solar charger with MPPT function according to claim 3, is characterized in that: described MCU control unit (31) is ARM or DSP.
CN201320665700.3U 2013-10-28 2013-10-28 Voltage adaptive solar energy charger with MPPT function CN203645353U (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578221A (en) * 2013-10-28 2015-04-29 东南大学 Voltage self-adapting solar charger with MPPT (Maximum Power Point Tracking) function and application method of voltage self-adapting solar charger
WO2017148118A1 (en) * 2016-03-03 2017-09-08 中兴通讯股份有限公司 Photovoltaic charging cellphone case
WO2018068681A1 (en) * 2016-09-30 2018-04-19 Renogy Suzhou Co., Ltd. Light-weight solar panels and method and system of making and using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578221A (en) * 2013-10-28 2015-04-29 东南大学 Voltage self-adapting solar charger with MPPT (Maximum Power Point Tracking) function and application method of voltage self-adapting solar charger
WO2017148118A1 (en) * 2016-03-03 2017-09-08 中兴通讯股份有限公司 Photovoltaic charging cellphone case
CN107149250A (en) * 2016-03-03 2017-09-12 中兴通讯股份有限公司 A kind of photovoltaic charged cell-phone cover
WO2018068681A1 (en) * 2016-09-30 2018-04-19 Renogy Suzhou Co., Ltd. Light-weight solar panels and method and system of making and using the same
US10530170B2 (en) 2016-09-30 2020-01-07 Rng International Inc. Method and system of adaptive charging

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C14 Grant of patent or utility model
GR01 Patent grant
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: 20140611

Termination date: 20161028