CN102611175A - Solar wireless charging circuit - Google Patents
Solar wireless charging circuit Download PDFInfo
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- CN102611175A CN102611175A CN2012100670254A CN201210067025A CN102611175A CN 102611175 A CN102611175 A CN 102611175A CN 2012100670254 A CN2012100670254 A CN 2012100670254A CN 201210067025 A CN201210067025 A CN 201210067025A CN 102611175 A CN102611175 A CN 102611175A
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Abstract
The invention relates to a solar wireless charging circuit, in particular to a solar wireless charging circuit which can be charged wirelessly. The solar wireless charging circuit comprises a solar battery power supply module, a wireless transmission module and a lithium battery charging module. The solar battery power supply module comprises a solar energy converting circuit, a high-frequency inverter circuit and a power amplifying circuit, direct-current voltage converted from solar energy is treated by the high-frequency inverter circuit and the power amplifying circuit and then sent into the wireless transmission module which comprises a transmitting circuit and a receiving circuit, and the receiving circuit inputs electric energy coupled from the transmitting circuit into the lithium battery charging module, so that solar wireless charging is realized. A resonant coupling type electric energy wireless transmission way is adopted while solar energy is made full use of, and the resonant coupling type electric energy wireless transmission way which is superior to wired transmission is higher in efficiency and farther in transmission distance than normal electromagnetic induction type wireless transmission ways. The solar wireless charging circuit has the advantages of safety in operation, low wear rate, long transmission distance, convenience, rapidness and high efficiency.
Description
Technical field
The present invention relates to a kind of solar charging circuit, relate in particular to a kind of solar charging circuit through the wireless mode charging.
Background technology
The Along with people's growth in the living standard, also increasingly high to the demand and the degree of dependence of electric power, and solar energy resources is inexhaustible, clean and safe, is optimal regenerative resource.
There are some intrinsic shortcomings in existing wired charging technique, and is huge like equipment, move that carrying is heavy, the lead-in wire of power supply is long, and manual operation is loaded down with trivial details and in the manual operation process, the factors such as excessive wear and insecurity of equipment very easily occur.Current a lot of wireless charging circuit rely on the electromagnetic induction between the coil, and this mode operating distance is too short, and equipment need be placed on the cradle, also can consume big volume and electricity simultaneously.
Therefore, existing charging technique can not satisfy people far away for low wear rate, long transmission distance and the yearning and the demand of charging technique safely and efficiently.
Summary of the invention
The object of the invention provides for the deficiency that overcomes above-mentioned prior art just that a kind of wear rate is low, the solar energy radio charging circuit of handling safety, long transmission distance and convenient and efficient.For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of solar energy radio charging circuit is characterized in that,
1) comprises solar cell for supplying power module, the wireless transport module that is connected with the solar cell for supplying power module and the lithium cell charging module that is connected with wireless transport module; Said solar cell for supplying power module comprises solar energy converting circuit, high-frequency inverter circuit and power amplification circuit; Said wireless transport module comprises radiating circuit and receiving circuit; Said lithium cell charging module is made up of electric power management circuit and lithium cell charging management circuit and lithium battery;
2) said solar cell for supplying power module with solar energy through the solar energy converting circuit; Convert direct voltage into and be input to high-frequency inverter circuit; High-frequency inversion is the power amplification circuit that is input to the back level behind the PWM signal of telecommunication of certain frequency; The frequency of the said PWM signal of telecommunication is consistent with channel frequency, after power amplification circuit is handled, sends into the coil L3 in the radiating circuit, and coil L3 senses electric energy on the coil L5 adjacent with it; Coil L5 in the radiating circuit and the coil L4 that receives in the electricity are transferred to coil L4 in receiving circuit with electric energy with wireless mode through the resonance coupling; Coil L4 senses electric energy on the coil L6 adjacent with it again, and circle L6 will be input to the electric power management circuit the lithium cell charging module from the electric energy that coil L4 senses, and the electric energy that electric power management circuit will receive from coil L4 converts into+the 5V direct voltage; Give lithium cell charging through the lithium cell charging management circuit, thereby accomplish the solar energy radio charging safely and efficiently.
Said radiating circuit and receiving circuit are formed coupling circuit jointly, and this coupling circuit adopts the LC oscillating circuit, and receiving circuit is identical with the radiating circuit frequency of oscillation, and is complementary with channel frequency, realize resonance coupling electric energy wireless transmission.
The strong push-pull type power amplification circuit that said power amplification circuit adopts the L298 chip to constitute improves power utilization as far as possible.
Said solar energy radio charging circuit also provides line interface when adopting wireless power transmission, can be a plurality of charging of mobile devices simultaneously, improves charge efficiency.
Said lithium cell charging management circuit adopts the lithium cell charging managing chip CN3063 of special-purpose available solar energy battery charge, makes charging process more safe and efficient.
Beneficial effect of the present invention: this solar energy radio charging circuit can change solar energy chargeable electric wave into and be coupled wireless transmission method to lithium cell charging with resonance; Induction electric energy wireless transmission method efficient than now general on the basis that makes full use of this green energy resource of solar energy is higher, and transmission range is farther.Therefore, this charging circuit have that handling safety, wear rate are low, the characteristics of long transmission distance, convenient and efficient.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the circuit diagram of solar energy converting circuit of the present invention.
Fig. 3 is the circuit diagram of wireless transport module of the present invention.
Fig. 4 is the circuit diagram of high-frequency inverter circuit of the present invention and power amplification circuit.
Fig. 5 is the circuit diagram of lithium cell charging module of the present invention.
Among Fig. 1: solar cell for supplying power module I comprises solar energy converting circuit, high-frequency inverter circuit and power amplification circuit; The wireless transport module II comprises radiating circuit III and receiving circuit IV; Lithium cell charging module V is made up of electric power management circuit, lithium cell charging management circuit and lithium battery.
Among Fig. 3: III, radiating circuit; IV, receiving circuit.
Among Fig. 4: 1, high-frequency inverter circuit; 2, power amplification circuit; 2.1, the main body of power amplification circuit; 2.2, the control circuit of power amplification circuit; Power amplification circuit 2 comprises the main body 2.1 of power amplification circuit and the control circuit 2.2 of power amplification circuit.
Among Fig. 5: 3, electric power management circuit; 4, lithium cell charging management circuit; 5, lithium battery.
Embodiment
For further setting forth technical scheme of the present invention,, the present invention is further elaborated below in conjunction with accompanying drawing.
As shown in Figure 1; A kind of solar energy radio charging circuit, said solar energy radio charging circuit comprises: solar cell for supplying power module I, the wireless transport module II that is connected with solar cell for supplying power module I and the lithium cell charging module V that is connected with the wireless transport module II.Said solar cell for supplying power module I comprises solar energy converting circuit as shown in Figure 2, high-frequency inverter circuit 1 and power amplification circuit 2 as shown in Figure 4; Said wireless transport module II comprises radiating circuit III as shown in figures 1 and 3 and receiving circuit IV; Said lithium cell charging module V is made up of with lithium battery 5 electric power management circuit as shown in Figure 53 and lithium cell charging management circuit 4.
Fig. 2 is the circuit diagram of solar energy converting circuit of the present invention.Solar energy through the solar energy converting circuit, is converted into direct voltage and gets into output+12V direct voltage behind the voltage stabilizing chip U4, and voltage stabilizing chip U5 is sent in the output of voltage stabilizing chip U4, output+5V direct voltage after voltage stabilizing chip U5 processing.The model of U4 is 74L12, and the model of U5 is 74L05.Above-mentioned voltage source by voltage stabilizing chip U5 output is that the high-frequency inverter circuit 1 in the solar cell for supplying power module I of the present invention provides working power with power amplification circuit 2.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5; Solar cell for supplying power module I with solar energy through solar energy converting circuit as shown in Figure 2; Convert direct voltage into and be input to high-frequency inverter circuit 1; High-frequency inversion is the power amplification circuit 2 that is input to the back level behind the PWM signal of telecommunication of certain frequency, and the frequency of the said PWM signal of telecommunication is consistent with channel frequency, after power amplification circuit 2 processing, sends into the coil L3 in the radiating circuit III; Coil L3 senses electric energy on the coil L5 adjacent with it; Coil L5 in the radiating circuit III and the coil L4 in the receiving circuit IV are transferred to the coil L4 in the receiving circuit IV through the resonance coupling with electric energy with wireless mode, coil L4 senses electric energy on the coil L6 adjacent with it again, and circle L6 will be input to the electric power management circuit 3 the lithium cell charging module V from the electric energy that coil L4 senses; The electric energy that electric power management circuit 3 will receive from coil L4 converts into+the 5V direct voltage; Give lithium battery 5 chargings through lithium cell charging management circuit 4, lithium cell charging management circuit 4 adopts the lithium cell charging managing chip CN3063 of special-purpose available solar energy battery charge, thereby accomplishes the solar energy radio charging safely and efficiently.
Said power amplification circuit 2 adopts the L298 chip to constitute strong push-pull type power amplification circuit, and the control circuit 2.2 of power amplification circuit adopts the main body 2.1 of the constant-current source power controlling amplifying circuit of LM317 formation.
In conjunction with Fig. 1 and shown in Figure 3; Said radiating circuit III is made up of resistance R S, capacitor C 8, coil L3 and coil L5; Said receiving circuit IV is made up of coil L4, coil L6 and capacitor C 9; Said capacitor C 8 is the filter capacitors in the radiating circuit III, and said capacitor C 9 is the filter capacitors in the receiving circuit IV.
Said radiating circuit III and receiving circuit IV are formed coupling circuit jointly; This coupling circuit adopts the LC oscillating circuit; The parameter of transmitting coil L5 is consistent with the parameter of receiving coil L4 in the receiving circuit IV in the radiating circuit III; The receiving circuit IV is identical with radiating circuit III frequency of oscillation and be complementary with channel frequency, realizes resonance coupling electric energy wireless transmission.
Capacitor C 5 in the said lithium cell charging management circuit 4 is shunt capacitances, and capacitance is 22uF, connects capacitor C 6 between 5 pins of chip U2 and 1 pin, and capacitance is 4.7uF, can guarantee the stability of charge management circuit.
The specification of said solar panel is 213mm * 92mm, voltage 18V, power 2W, polysilicon.
The transmission range of said solar energy radio charging circuit is 5-10cm; The constant voltage charge voltage 4.17V-4.23V of said lithium battery, representative value is 4.2V; Said lithium battery constant current charge electric current 400mA-600mA, representative value is 500mA.
The model of said lithium cell charging managing chip U2 is CN3063; The built-in power transistor does not need the only few peripheral component of needs of outside choked flow diode and current sense resistor, has the anti-automatically function that overcharges; Input voltage range 4.35V is to 6V; Can adjust charging current automatically according to the electric current fan-out capability of input voltage source, be fit to very much to utilize the lithium cell charging of the limited voltage fed of electric current fan-out capability such as solar cell to use and meet the usb bus technical specification.
1 pin of said lithium cell charging managing chip U2 detects input for the TEMP battery temperature, because this charging circuit need not detect the temperature of lithium battery 5, so 1 pin passes through the negativing ending grounding of lithium battery 5, the battery temperature measuring ability is under an embargo; 2 pins are that ISET constant current charge electric current is provided with and the charging current test side, and 2 pins connect a non-essential resistance R10 and hold to ground and can programme to charging current; 3 pins are GND power supply ground; 4 pins are VIN input voltage positive input terminal, and the voltage of this pin is the working power of internal circuit, so the connection of 4 pins is prime electric power management circuit 4 output+5V direct voltages; 5 pins are BAT battery link, and the anode of lithium battery 5 is connected to this pin; 6 pins are the charging done state indication end of DONE open-drain output, connect LED2, LED2 glow green when charging finishes, and LED2 is not luminous during other state; 7 pins are the charged state indication end of CHAR open-drain output, connect LED1, and LED1 glowed when charging was being carried out, and LED1 is not luminous during other state; 8 pins are that FB cell voltage Kelvin detects input; The voltage of anode when this pin can accurately be modulated constant voltage charge; Avoided from the positive pole of lithium battery 5 to dead resistances such as conductor resistance 5 pins of U2 or contact resistances the influence of charging; Between 8 pins and 5 pins, connect a resistance R 9, can adjust constant voltage charge voltage.
Claims (5)
1. a solar energy radio charging circuit is characterized in that,
1) comprises the solar cell for supplying power module, wireless transport module that is connected with the solar cell for supplying power module and the lithium cell charging module that is connected with wireless transport module; Said solar cell for supplying power module comprises solar energy converting circuit, high-frequency inverter circuit and power amplification circuit; Said wireless transport module comprises radiating circuit and receiving circuit; Said lithium cell charging module is made up of electric power management circuit and lithium cell charging management circuit and lithium battery;
2) said solar cell for supplying power module with solar energy through the solar energy converting circuit; Convert direct voltage into and be input to high-frequency inverter circuit; High-frequency inversion is the power amplification circuit that is input to the back level behind the PWM signal of telecommunication of certain frequency; The frequency of the said PWM signal of telecommunication is consistent with channel frequency, after power amplification circuit is handled, sends into the coil L3 in the radiating circuit, and coil L3 senses electric energy on the coil L5 adjacent with it; Coil L5 in the radiating circuit and the coil L4 that receives in the electricity are transferred to coil L4 in receiving circuit with electric energy with wireless mode through the resonance coupling; Coil L4 senses electric energy on the coil L6 adjacent with it again, and circle L6 will be input to the electric power management circuit the lithium cell charging module from the electric energy that coil L4 senses, and the electric energy that electric power management circuit will receive from coil L4 converts into+the 5V direct voltage; Give lithium cell charging through the lithium cell charging management circuit, thereby accomplish the solar energy radio charging safely and efficiently.
2. according to the said solar energy radio charging circuit of claim 1; It is characterized in that; Said radiating circuit and receiving circuit are formed coupling circuit jointly, and this coupling circuit adopts the LC oscillating circuit, and receiving circuit is identical with the radiating circuit frequency of oscillation; And be complementary with channel frequency, realize resonance coupling electric energy wireless transmission.
3. according to the said solar energy radio charging circuit of claim 1, it is characterized in that the strong push-pull type power amplification circuit that said power amplification circuit adopts the L298 chip to constitute.
4. according to the said solar energy radio charging circuit of claim 1, it is characterized in that said lithium cell charging management circuit adopts the lithium cell charging managing chip CN3063 of special-purpose available solar energy battery charge, makes charging process more safe and efficient.
5. according to the said solar energy radio charging circuit of claim 1, it is characterized in that the transmission range of said solar energy radio charging circuit is 5-10cm; The constant voltage charge voltage 4.17V-4.23V of said lithium battery, representative value is 4.2V; Said lithium battery constant current charge electric current 400mA-600mA, representative value is 500mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100670254A CN102611175A (en) | 2012-03-15 | 2012-03-15 | Solar wireless charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100670254A CN102611175A (en) | 2012-03-15 | 2012-03-15 | Solar wireless charging circuit |
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| CN102611175A true CN102611175A (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100670254A Pending CN102611175A (en) | 2012-03-15 | 2012-03-15 | Solar wireless charging circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762726A (en) * | 2014-01-28 | 2014-04-30 | 华南理工大学 | Household solar wireless power supply system |
| CN104348220A (en) * | 2013-07-23 | 2015-02-11 | 日立-Lg数据存储韩国公司 | Charging device |
| WO2016050156A1 (en) * | 2014-10-02 | 2016-04-07 | 陈念祖 | Wireless charging system and device |
| CN107065612A (en) * | 2017-04-24 | 2017-08-18 | 株洲南冠安全科技有限公司 | The power control system and method for a kind of automatic broken glass device |
| CN107093922A (en) * | 2017-05-11 | 2017-08-25 | 芜湖威灵数码科技有限公司 | A kind of lithium battery power supply system of VR interactive devices |
| CN108565946A (en) * | 2018-02-08 | 2018-09-21 | 深圳市遨捷智能科技有限公司 | A kind of offline mode solar panels structure optimization water-proofing composition power supply |
| CN109327070A (en) * | 2018-11-30 | 2019-02-12 | 中国地质大学（武汉） | A kind of solar energy radio charging station for domestic intelligent equipment |
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| CN2896646Y (en) * | 2005-07-27 | 2007-05-02 | 张定港 | Inductive charging device of medium player |
| JP2010068632A (en) * | 2008-09-11 | 2010-03-25 | Yazaki Corp | Wireless charging system for vehicles |
| CN102315691A (en) * | 2010-07-01 | 2012-01-11 | 苏州宝时得电动工具有限公司 | Wireless charging system and method |
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2012
- 2012-03-15 CN CN2012100670254A patent/CN102611175A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2896646Y (en) * | 2005-07-27 | 2007-05-02 | 张定港 | Inductive charging device of medium player |
| JP2010068632A (en) * | 2008-09-11 | 2010-03-25 | Yazaki Corp | Wireless charging system for vehicles |
| CN102315691A (en) * | 2010-07-01 | 2012-01-11 | 苏州宝时得电动工具有限公司 | Wireless charging system and method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348220A (en) * | 2013-07-23 | 2015-02-11 | 日立-Lg数据存储韩国公司 | Charging device |
| CN103762726A (en) * | 2014-01-28 | 2014-04-30 | 华南理工大学 | Household solar wireless power supply system |
| WO2016050156A1 (en) * | 2014-10-02 | 2016-04-07 | 陈念祖 | Wireless charging system and device |
| CN107065612A (en) * | 2017-04-24 | 2017-08-18 | 株洲南冠安全科技有限公司 | The power control system and method for a kind of automatic broken glass device |
| CN107093922A (en) * | 2017-05-11 | 2017-08-25 | 芜湖威灵数码科技有限公司 | A kind of lithium battery power supply system of VR interactive devices |
| CN108565946A (en) * | 2018-02-08 | 2018-09-21 | 深圳市遨捷智能科技有限公司 | A kind of offline mode solar panels structure optimization water-proofing composition power supply |
| CN109327070A (en) * | 2018-11-30 | 2019-02-12 | 中国地质大学（武汉） | A kind of solar energy radio charging station for domestic intelligent equipment |
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Application publication date: 20120725 |