CN204696767U - A kind of solar charging controller - Google Patents
A kind of solar charging controller Download PDFInfo
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- CN204696767U CN204696767U CN201520490146.9U CN201520490146U CN204696767U CN 204696767 U CN204696767 U CN 204696767U CN 201520490146 U CN201520490146 U CN 201520490146U CN 204696767 U CN204696767 U CN 204696767U
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Abstract
The utility model relates to a kind of charge controller, is a kind of solar charging controller in particular, can detect the voltage of storage battery, thus selects suitable charging modes and prevent storage battery generation overdischarge phenomenon.Can to detect the electric current of storage battery and temperature, thus the break-make of control load, to make more efficient, the stable and safety of circuit.The magnitude of voltage of electric circuit inspection storage battery also feeds back to single-chip microcomputer.Current value during current detection circuit detection storage battery powering load also feeds back to single-chip microcomputer.The temperature during work of temperature sensing circuit testing circuit also feeds back to single-chip microcomputer.Single-chip Controlling charging control circuit thus control charging, Single-chip Controlling load control circuit thus control power supply process.
Description
Technical field
The utility model relates to a kind of charge controller, is a kind of solar charging controller in particular.
Background technology
Along with this clean energy resource of solar energy application day by day universal, how efficiently, safety the problem utilizing solar energy to become important.Protection in the market for the storage battery of solar recharging is not very abundant; corresponding charging modes is not arranged for the different charging stage; simultaneously; discharge process for storage battery does not also carry out good monitor and forecast, is easy to cause the short and something unexpected happened of battery like this.
Summary of the invention
The technical problem that the utility model mainly solves is to provide a kind of solar charging controller, can detect the voltage of storage battery, thus selects suitable charging modes and prevent storage battery generation overdischarge phenomenon.Can to detect the electric current of storage battery and temperature, thus the break-make of control load, to make more efficient, the stable and safety of circuit.
For solving the problems of the technologies described above, a kind of solar charging controller of the utility model, comprise voltage detecting circuit, current detection circuit, temperature sensing circuit, charging control circuit, load control circuit and single-chip microcomputer, can detect the voltage of storage battery, thus select suitable charging modes and prevent storage battery generation overdischarge phenomenon.Can to detect the electric current of storage battery and temperature, thus the break-make of control load, to make more efficient, the stable and safety of circuit.
This solar charging controller voltage detecting circuit detects the magnitude of voltage of storage battery and feeds back to single-chip microcomputer.Current value during current detection circuit detection storage battery powering load also feeds back to single-chip microcomputer.The temperature during work of temperature sensing circuit testing circuit also feeds back to single-chip microcomputer.Single-chip Controlling charging control circuit thus control charging, Single-chip Controlling load control circuit thus control power supply process.
Described voltage detecting circuit comprises resistance R1, resistance R2, electric capacity C1, electric capacity C2, diode D1 and operational amplifier A 1.One end of resistance R1 is connected with the positive pole of storage battery V2, and the other end of resistance R1 is connected with one end of electric capacity C1, and the other end of electric capacity C1 is connected to the ground.One end of resistance R2 is connected with one end of resistance R1, and the other end of resistance R2 is connected with one end of electric capacity C2, and the other end of electric capacity C2 is connected to the ground.The positive input terminal of operational amplifier A 1 is connected with one end of resistance R2, and the negative input end of operational amplifier A 1 is connected with the output of operational amplifier A 2, and the output of operational amplifier A 1 is extremely connected with the N of diode D1, and the P pole of diode D1 is connected to the ground.
Described current detection circuit comprises Hall current sensor IC1, resistance R3, resistance R4, electric capacity C3 and operational amplifier A 2.The pin 1 of Hall current sensor IC1 is connected with one end of load resistance RL, and the pin 2 of Hall current sensor IC1 is connected to the ground, and the electric current output pin M of Hall current sensor IC1 is connected with one end of resistance R4, and the other end of resistance R4 is connected to the ground.One end of resistance R3 is connected with resistance R4, and the other end is connected with electric capacity C3, and the other end of electric capacity C3 is connected to the ground.The positive input terminal of operational amplifier A 2 is connected with resistance R3, and the negative input end of operational amplifier A 2 is connected with the output of operational amplifier A 2.
Described temperature sensing circuit comprises resistance RT, resistance R5, electric capacity C4, resistance R6 and electric capacity C5.One end of resistance RT is connected with storage battery V2 anode, and the other end of resistance RT is connected with resistance R5, and the other end of resistance R5 is connected to the ground.One end of electric capacity C4 is connected with resistance R5, and the other end of electric capacity C4 is connected to the ground.One end of resistance R6 is connected with electric capacity C4, and the other end of resistance R6 is connected with electric capacity C5, and the other end of electric capacity C5 is connected to the ground.
Described charging control circuit comprises resistance R9, triode TR3, resistance R10 and relay K V.One end of resistance R9 is connected with the P1.1 pin of single-chip microcomputer IC2, and the other end of resistance R9 is connected with the base stage of triode TR3, and the collector electrode of triode TR3 is connected with resistance R10, and the other end of resistance R10 is connected with the positive pole of solar cell V1.The emitter of triode TR3 is connected to the ground.One end of relay K V is connected with the collector electrode of triode TR3, and the other end of relay K V is connected with the emitter of triode TR3.
Described load control circuit comprises diode D2, triode TR1, resistance R7, field effect transistor TR2 and resistance R8.The P pole of diode D2 is connected with the pin P1.0 of single-chip microcomputer IC2, the N pole of diode D2 is connected with the base stage of triode TR1, the collector electrode of triode TR1 is connected with resistance R7, and the other end of resistance R7 is connected with the positive pole of storage battery V2, and the emitter of triode TR1 is connected to the ground.The grid of field effect transistor TR2 is connected with the collector electrode of triode TR1, and be connected to the drain electrode of field effect transistor TR2 and load, the source electrode of field effect transistor TR2 is connected with resistance R8, and the other end of resistance R8 is connected to the ground.
As the further optimization of this programme, a operational amplifier that the operational amplifier A 1 described in a kind of solar charging controller of the utility model and operational amplifier A 2 all select Texas Instruments, Inc to produce, its model is ALM2402-Q1.
As the further optimization of this programme, the diode D1 described in a kind of solar charging controller of the utility model is voltage stabilizing didoe.
As the further optimization of this programme, a Hall current sensor that the Hall current sensor described in a kind of solar charging controller of the utility model selects Camellia Electric Co., Ltd. Jiangsu to produce, its model is CSM025A.
As the further optimization of this programme, the resistance RT described in a kind of solar charging controller of the utility model is negative tempperature coefficient thermistor.
As the further optimization of this programme, the field effect transistor TR2 described in a kind of solar charging controller of the utility model is N-channel MOS field effect transistor.
As the further optimization of this programme, a single-chip microcomputer that the single-chip microcomputer IC2 described in a kind of solar charging controller of the utility model selects Texas Instruments, Inc to produce, its model is MSP430G2452.
The beneficial effect of a kind of solar charging controller of the utility model is:
A, this solar charging controller can carry out voltage detecting, control solar cell to the charge mode of storage battery;
B, this solar charging controller can detect load current and working temperature, the working method of control load, prevent battery overdischarge and the too high damage battery of temperature.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific implementation method, the utility model is described in more detail.
Fig. 1 is the circuit diagram of a kind of solar charging controller of the utility model.
Fig. 2 is the circuit block diagram of a kind of solar charging controller of the utility model.
Embodiment
In Fig. 1,2: the utility model relates to a kind of charge controller, a kind of solar charging controller in particular, comprise voltage detecting circuit, current detection circuit, temperature sensing circuit, charging control circuit, load control circuit and single-chip microcomputer, can detect the voltage of storage battery, thus select suitable charging modes and prevent storage battery generation overdischarge phenomenon.Can to detect the electric current of storage battery and temperature, thus the break-make of control load, to make more efficient, the stable and safety of circuit.
This solar charging controller voltage detecting circuit detects the magnitude of voltage of storage battery and feeds back to single-chip microcomputer.Current value during current detection circuit detection storage battery powering load also feeds back to single-chip microcomputer.The temperature during work of temperature sensing circuit testing circuit also feeds back to single-chip microcomputer.Single-chip Controlling charging control circuit thus control charging, Single-chip Controlling load control circuit thus control power supply process.
Described voltage detecting circuit comprises resistance R1, resistance R2, electric capacity C1, electric capacity C2, diode D1 and operational amplifier A 1.One end of resistance R1 is connected with the positive pole of storage battery V2, and the other end of resistance R1 is connected with one end of electric capacity C1, and the other end of electric capacity C1 is connected to the ground.One end of resistance R2 is connected with one end of resistance R1, and the other end of resistance R2 is connected with one end of electric capacity C2, and the other end of electric capacity C2 is connected to the ground.The positive input terminal of operational amplifier A 1 is connected with one end of resistance R2, and the negative input end of operational amplifier A 1 is connected with the output of operational amplifier A 2, and the output of operational amplifier A 1 is extremely connected with the N of diode D1, and the P pole of diode D1 is connected to the ground.
Described current detection circuit comprises Hall current sensor IC1, resistance R3, resistance R4, electric capacity C3 and operational amplifier A 2.The pin 1 of Hall current sensor IC1 is connected with one end of load resistance RL, and the pin 2 of Hall current sensor IC1 is connected to the ground, and the electric current output pin M of Hall current sensor IC1 is connected with one end of resistance R4, and the other end of resistance R4 is connected to the ground.One end of resistance R3 is connected with resistance R4, and the other end is connected with electric capacity C3, and the other end of electric capacity C3 is connected to the ground.The positive input terminal of operational amplifier A 2 is connected with resistance R3, and the negative input end of operational amplifier A 2 is connected with the output of operational amplifier A 2.
Described temperature sensing circuit comprises resistance RT, resistance R5, electric capacity C4, resistance R6 and electric capacity C5.One end of resistance RT is connected with storage battery V2 anode, and the other end of resistance RT is connected with resistance R5, and the other end of resistance R5 is connected to the ground.One end of electric capacity C4 is connected with resistance R5, and the other end of electric capacity C4 is connected to the ground.One end of resistance R6 is connected with electric capacity C4, and the other end of resistance R6 is connected with electric capacity C5, and the other end of electric capacity C5 is connected to the ground.
Described charging control circuit comprises resistance R9, triode TR3, resistance R10 and relay K V.One end of resistance R9 is connected with the P1.1 pin of single-chip microcomputer IC2, and the other end of resistance R9 is connected with the base stage of triode TR3, and the collector electrode of triode TR3 is connected with resistance R10, and the other end of resistance R10 is connected with the positive pole of solar cell V1.The emitter of triode TR3 is connected to the ground.One end of relay K V is connected with the collector electrode of triode TR3, and the other end of relay K V is connected with the emitter of triode TR3.
Described load control circuit comprises diode D2, triode TR1, resistance R7, field effect transistor TR2 and resistance R8.The P pole of diode D2 is connected with the pin P1.0 of single-chip microcomputer IC2, the N pole of diode D2 is connected with the base stage of triode TR1, the collector electrode of triode TR1 is connected with resistance R7, and the other end of resistance R7 is connected with the positive pole of storage battery V2, and the emitter of triode TR1 is connected to the ground.The grid of field effect transistor TR2 is connected with the collector electrode of triode TR1, and be connected to the drain electrode of field effect transistor TR2 and load, the source electrode of field effect transistor TR2 is connected with resistance R8, and the other end of resistance R8 is connected to the ground.
A operational amplifier that operational amplifier A 1 and operational amplifier A 2 all select Texas Instruments, Inc to produce, its model is ALM2402-Q1.This operational amplifier aly has the two-way high voltage of defencive function, high current operational amplifier, is suitable for very much driving Low ESR and or the capacitive load of high effective series resistance.Storage battery V2 powers to load RL, and voltage detecting circuit detects resistance RL both end voltage.Resistance R1, resistance R2, electric capacity C1 and electric capacity C2 form second-order low-pass filter, the radio-frequency component in filtering voltage, the voltage follower that voltage after filtering input is made up of operational amplifier A 1, and voltage follower carries out impedance matching and isolation.Diode D1 is voltage stabilizing didoe, and the Output rusults of voltage follower carries out voltage stabilizing through diode D1, prevents the overtension inputting single-chip microcomputer.The analog port A1 of the output input single-chip microcomputer of voltage follower, and carry out analog-to-digital conversion in single-chip microcomputer inside, single-chip microcomputer judges this value, when this value is lower than set point, solar cell charges to storage battery, when this value is lower than when reaching set point, Single-chip Controlling chargeable circuit stops charge in batteries.
A Hall current sensor that Hall current sensor selects Camellia Electric Co., Ltd. Jiangsu to produce, its model is CSM025A.This transducer is the current sensor of application Hall effect closed loop principle, can measure the electric current of direct current, interchange, pulse and various irregular waveform under electrically isolated condition.Current detection circuit is serially connected in load circuit, detect the size of current of load circuit, the output current of Hall current sensor converts voltage on resistance R4, through the low pass filter filtering high fdrequency component be made up of resistance R3 and electric capacity C3, filtered voltage sends into the port A1 of single-chip microcomputer through the voltage follower be made up of operational amplifier A 2, and carry out analog-to-digital conversion in single-chip microcomputer inside, when current is excessive, Single-chip Controlling storage battery disconnects powers to load circuit.
Resistance RT is negative tempperature coefficient thermistor, and temperature sensor RT (being equivalent to variable resistor) and resistance R5 form dividing potential drop, along with the change of ambient temperature, and the resistance value and then change of temperature sensor RT, then the voltage respective change at resistance R5 two ends.In circuit, RT and R5 forms bleeder circuit, and C4, C5 and R6 form Π type RC filtering, and C4 is to the smoothing filtering of bleeder circuit output voltage, and the interchange clutter of C4 two ends remainder is again by R6 and C5 dividing potential drop subsequently.The alternating component of this remainder is mostly fallen on R6, and the alternating component of C5 two ends remainder is just minimum, so serve the effect of High frequency filter.The temperature information gathered sends into single-chip microcomputer by the port A2 of single-chip microcomputer, and carries out analog-to-digital conversion in single-chip microcomputer inside, and single-chip microcomputer is through calculating temperature information, and when temperature is too high, Single-chip Controlling load control circuit disconnects the power supply to load.
A single-chip microcomputer that single-chip microcomputer IC2 selects Texas Instruments, Inc to produce, its model is MSP430G2452.This single-chip microcomputer is low in energy consumption, cost is low, carries 8 path 10 position analog to digital converters, is very suitable for low-power consumption application scenario.Single-chip microcomputer controls charging control circuit according to the battery tension value collected.When battery tension is lower than charging voltage value, the port P1.1 output low level of single-chip microcomputer, triode TR3 ends, and relay K V is high voltage, and now relay is failure to actuate, and switch is normally closed, and solar cell charges a battery.When battery tension equals charging voltage value, the port P1.1 of single-chip microcomputer exports high level, and triode TR3 conducting relay K V is low-voltage, the now actuating of relay, and normally closed switch disconnects, and solar cell stops charging a battery.Single-chip microcomputer controls load control circuit according to the electric current gathered and temperature information, when temperature and electric current are in normal range (NR), the port P1.0 output low level of single-chip microcomputer, diode D2 ends, and triode TR1 ends, and field effect transistor TR2 is N-channel MOS field effect transistor, grid high input voltage, field effect transistor TR2 conducting, load ground with power supply be connected, storage battery powering load.When temperature is too high or electric current is excessive, the port P1.0 of single-chip microcomputer exports high level, diode D2 conducting, and triode TR1 ends conducting, and field effect transistor TR2 ends, and load ground disconnects with power supply ground, and storage battery stops powering load.Thus effectively prevent battery over-discharge or the too high damage circuit of temperature.
Certainly; above-mentioned explanation is not limitation of the utility model; the utility model is also not limited only to above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also belongs to protection range of the present utility model.
Claims (6)
1. a solar charging controller, comprise voltage detecting circuit, current detection circuit, temperature sensing circuit, charging control circuit, load control circuit and single-chip microcomputer, it is characterized in that: voltage detecting circuit detects the magnitude of voltage of storage battery and feeds back to single-chip microcomputer; Current value during current detection circuit detection storage battery powering load also feeds back to single-chip microcomputer; The temperature during work of temperature sensing circuit testing circuit also feeds back to single-chip microcomputer; Single-chip Controlling charging control circuit thus control charging, Single-chip Controlling load control circuit thus control power supply process;
Described voltage detecting circuit comprises resistance R1, resistance R2, electric capacity C1, electric capacity C2, diode D1 and operational amplifier A 1; One end of resistance R1 is connected with the positive pole of storage battery V2, and the other end of resistance R1 is connected with one end of electric capacity C1, and the other end of electric capacity C1 is connected to the ground; One end of resistance R2 is connected with one end of resistance R1, and the other end of resistance R2 is connected with one end of electric capacity C2, and the other end of electric capacity C2 is connected to the ground; The positive input terminal of operational amplifier A 1 is connected with one end of resistance R2, and the negative input end of operational amplifier A 1 is connected with the output of operational amplifier A 2, and the output of operational amplifier A 1 is extremely connected with the N of diode D1, and the P pole of diode D1 is connected to the ground;
Described current detection circuit comprises Hall current sensor IC1, resistance R3, resistance R4, electric capacity C3 and operational amplifier A 2; The pin 1 of Hall current sensor IC1 is connected with one end of load resistance RL, and the pin 2 of Hall current sensor IC1 is connected to the ground, and the electric current output pin M of Hall current sensor IC1 is connected with one end of resistance R4, and the other end of resistance R4 is connected to the ground; One end of resistance R3 is connected with resistance R4, and the other end is connected with electric capacity C3, and the other end of electric capacity C3 is connected to the ground; The positive input terminal of operational amplifier A 2 is connected with resistance R3, and the negative input end of operational amplifier A 2 is connected with the output of operational amplifier A 2;
Described temperature sensing circuit comprises resistance RT, resistance R5, electric capacity C4, resistance R6 and electric capacity C5; One end of resistance RT is connected with storage battery V2 anode, and the other end of resistance RT is connected with resistance R5, and the other end of resistance R5 is connected to the ground; One end of electric capacity C4 is connected with resistance R5, and the other end of electric capacity C4 is connected to the ground; One end of resistance R6 is connected with electric capacity C4, and the other end of resistance R6 is connected with electric capacity C5, and the other end of electric capacity C5 is connected to the ground;
Described charging control circuit comprises resistance R9, triode TR3, resistance R10 and relay K V; One end of resistance R9 is connected with the P1.1 pin of single-chip microcomputer IC2, and the other end of resistance R9 is connected with the base stage of triode TR3, and the collector electrode of triode TR3 is connected with resistance R10, and the other end of resistance R10 is connected with the positive pole of solar cell V1; The emitter of triode TR3 is connected to the ground; One end of relay K V is connected with the collector electrode of triode TR3, and the other end of relay K V is connected with the emitter of triode TR3;
Described load control circuit comprises diode D2, triode TR1, resistance R7, field effect transistor TR2 and resistance R8; The P pole of diode D2 is connected with the pin P1.0 of single-chip microcomputer IC2, the N pole of diode D2 is connected with the base stage of triode TR1, the collector electrode of triode TR1 is connected with resistance R7, and the other end of resistance R7 is connected with the positive pole of storage battery V2, and the emitter of triode TR1 is connected to the ground; The grid of field effect transistor TR2 is connected with the collector electrode of triode TR1, and be connected to the drain electrode of field effect transistor TR2 and load, the source electrode of field effect transistor TR2 is connected with resistance R8, and the other end of resistance R8 is connected to the ground.
2. a kind of solar charging controller according to claim 1, is characterized in that: a operational amplifier that described operational amplifier A 1 and operational amplifier A 2 all select Texas Instruments, Inc to produce, and its model is ALM2402-Q1.
3. a kind of solar charging controller according to claim 1, is characterized in that: a Hall current sensor that described Hall current sensor selects Camellia Electric Co., Ltd. Jiangsu to produce, and its model is CSM025A.
4. a kind of solar charging controller according to claim 1, is characterized in that: described resistance RT is negative tempperature coefficient thermistor.
5. a kind of solar charging controller according to claim 1, is characterized in that: described field effect transistor TR2 is N-channel MOS field effect transistor.
6. a kind of solar charging controller according to claim 1, is characterized in that: a single-chip microcomputer that described single-chip microcomputer IC2 selects Texas Instruments, Inc to produce, and its model is MSP430G2452.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490146.9U CN204696767U (en) | 2015-07-04 | 2015-07-04 | A kind of solar charging controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490146.9U CN204696767U (en) | 2015-07-04 | 2015-07-04 | A kind of solar charging controller |
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| CN204696767U true CN204696767U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520490146.9U Expired - Fee Related CN204696767U (en) | 2015-07-04 | 2015-07-04 | A kind of solar charging controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695814A (en) * | 2018-07-12 | 2018-10-23 | 安徽锐能科技有限公司 | Protection circuit for power ground |
-
2015
- 2015-07-04 CN CN201520490146.9U patent/CN204696767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695814A (en) * | 2018-07-12 | 2018-10-23 | 安徽锐能科技有限公司 | Protection circuit for power ground |
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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 |
Granted publication date: 20151007 Termination date: 20160704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |