CN210868250U

CN210868250U - Split type commercial power complementary solar street lamp controller

Info

Publication number: CN210868250U
Application number: CN201922181989.1U
Authority: CN
Inventors: 曹慧; 张会龙
Original assignee: JIANGYIN HUAHUIYUAN ELECTRONIC TECHNOLOGY CO LTD
Current assignee: JIANGYIN HUAHUIYUAN ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2019-12-07
Filing date: 2019-12-07
Publication date: 2020-06-26
Anticipated expiration: 2029-12-07

Abstract

The utility model relates to a split type commercial power complementary solar street lamp controller, a solar cell panel charges a storage battery through a charging circuit; the commercial power external power supply and the storage battery are respectively connected with the switching circuit to select an input source for the discharging circuit; the discharging circuit provides constant current for the LED light source, the power supply circuit provides working power supply for the MCU and the driving circuit, and the power supply circuit is composed of a commercial power supply, a storage battery and a solar cell panel and provides an input source together; the sampling circuit is responsible for collecting each electrical parameter to provide a basis for MCU logic control; the driving circuit provides proper driving voltage and current for the charging circuit, the discharging circuit and the switching circuit; the communication circuit sets proper working parameters for the system; the display circuit provides a visual operating status for the system. The utility model discloses a components of a whole that can function independently design mains supply and solar controller separately, the user can select the mains supply of suitable power according to the load size of reality, and is nimble, convenient, with low costs.

Description

Split type commercial power complementary solar street lamp controller

Technical Field

The utility model belongs to the technical field of solar control, concretely relates to complementary solar street lamp controller of split type commercial power.

Background

With the continuous progress of science and technology, solar energy as a renewable energy source is gradually applied to the field of street lamp illumination. At present, a solar street lamp power supply control device in the prior art generally comprises a solar cell module, a solar street lamp controller and a storage battery; the solar street lamp comprises a solar cell module, a solar street lamp controller, a storage battery, a solar street lamp controller and a storage battery, wherein the solar cell module charges the storage battery through the solar street lamp controller when sunlight is off in the daytime, so that the storage battery automatically supplies power to the street lamp when the solar street lamp controller controls the street lamp to be turned on in dark. In order to avoid the situation that the solar battery assembly cannot charge the storage battery due to continuous rainy days, and the street lamp cannot normally work, the solar street lamp power supply control device in the prior art also adopts commercial power as a post-supplement power supply energy of the solar energy, and specifically adopts a relay or a switch tube to connect the commercial power with the solar street lamp controller, so that the purpose of switching between the solar energy and the commercial power is achieved. However, in the power supply control device in the prior art, during the process of switching between solar energy and commercial power, the phenomenon of flashing light (i.e. short-time power off) often occurs, and after the street lamp is closed in some occasions or even at night, the commercial power fully charges the storage battery, so that the solar energy cannot charge the storage battery in daytime, and energy waste is caused.

In addition, the independent solar street lamp system is easy to be influenced by weather, temperature, climate and geographical position all year round, the condition of electric quantity exhaustion is not avoided, and the condition is not allowed to occur in some occasions (such as municipal roads) with higher requirements on illumination; the main solution at present is to increase the system capacity of the solar panel and the storage battery, but this increases the investment and the use cost of the user.

How to guarantee incessant illumination effect in the settlement time, extension battery life reduces user's use cost, guarantees stable, the safe operation of controller simultaneously and is the problem that awaits a urgent need to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a flexibility is provided to above-mentioned prior art, and the complementary solar street lamp controller of convenient split type commercial power improves entire system's life, reduces user's use cost.

The utility model provides a technical scheme that above-mentioned problem adopted does: a split type commercial power complementary solar street lamp controller comprises a commercial power AC/DC external power supply, a storage battery, a solar panel, an LED light source, a charging circuit, a discharging circuit, a switching circuit, a driving circuit, a power circuit, an MCU controller, a sampling circuit, a communication circuit and a display circuit; the solar cell panel charges the storage battery through the charging circuit; the commercial power AC/DC external power supply and the storage battery are respectively connected with the switching circuit, and an input source is selected for the discharging circuit according to the switching voltage; the discharging circuit provides constant current for the LED light source, the power supply circuit provides working power supply for the MCU controller and the driving circuit, and the power supply circuit is composed of a commercial power AC/DC power supply, a storage battery and a solar cell panel and provides an input source together; the sampling circuit is responsible for collecting each electrical parameter to provide a basis for the logic control of the MCU controller; the driving circuit provides proper driving voltage and current for the charging circuit, the discharging circuit and the switching circuit; the communication circuit sets proper working parameters for the system; the display circuit provides a visual operating status for the system.

Preferably, the charging circuit comprises MOS transistors Q1 and Q2, wherein 1 pin of Q1 and Q2 is respectively connected with a signal port of the driving circuit to control charging of the solar panel, 3 pins of Q1 are connected with the anode of the solar panel, 2 pins of Q2 are connected in series, and 3 pins of Q2 are connected with the cathode of the storage battery to prevent the storage battery from supplying power to the solar panel in the reverse direction at night.

Preferably, the discharge circuit comprises an inductor L1, a diode D1, a MOS transistor Q3, capacitors C1 and C2, one end of the inductor L1 is connected to the switching circuit, the other end of the inductor L1 is connected to the pin 3 of Q3, the pin 1 and the pin 2 of D1 are connected to each other, the pin 3 of the diode D1 is connected to one end of a capacitor C2, the anode of the LED light source is connected to the anode of the LED light source, the other end of the diode C2 is grounded, one end of the capacitor C1 is connected between the L1 and the switching circuit, the other end of the capacitor C1 is grounded, the pin 1 of the diode Q3 is connected to the signal port.

Preferably, the switching circuit is a relay J1, pin 3 of the J1 is connected to one end of the L1, pin 1 is connected to the switching signal port of the driving circuit, pin 2 is grounded, and

pins

4 and 5 are respectively connected to the positive electrode of the storage battery and the positive electrode of the commercial power AC/DC external power supply.

Preferably, the sampling circuit is a current sampling resistor R17 for providing a real-time current value of the LED load, one end of the R17 is connected to the cathode of the LED light source through a MOS transistor Q4, the other end of the R17 is connected to the C2 of the discharge circuit, and the signal port of the 1-pin driving circuit of the Q4 is connected to turn on the Q4.

Preferably, the driving circuit is a UCC27324 chip, and converts the TTL level of the MCU controller into voltage and current suitable for the MOS tube and the relay to work.

Compared with the prior art, the utility model has the advantages of:

1. the split design is adopted, the commercial power AC/DC power supply and the solar controller are separately designed, and a user can select the commercial power AC/DC power supply with proper power according to the actual load, so that the solar energy commercial power supply is flexible, convenient and low in cost;

2. by adopting the topological circuit structure in the utility model, the utility model can ensure that the commercial power can not charge the storage battery, and the common commercial power AC/DC power supply can be adopted, so that the expensive special charging power supply for the storage battery is not needed, the system stability is improved, and the use cost is reduced;

3. the switching circuit adopts a relay, so that the electric isolation between the commercial power AD/DC power supply and the storage battery is ensured, and the safety of the controller is improved;

4. the switching voltage can be set, different switching voltages can be set according to different storage battery characteristics, deep discharge of the storage battery is avoided, the service life of the whole system is prolonged, and the use cost of a user is reduced.

Drawings

Fig. 1 is a system framework diagram of a split-type commercial power complementary solar street lamp controller in this embodiment.

Fig. 2 is a schematic circuit topology diagram of a split-type commercial power complementary solar street lamp controller in this embodiment.

Fig. 3 is a logic control flow chart of the system of the split-type commercial power complementary solar street lamp controller in the present embodiment.

Fig. 4 is a diagram of a relay off state of the split-type commercial power complementary solar street lamp controller in this embodiment.

Fig. 5 is a diagram of a working state of a relay of the split-type commercial power complementary solar street lamp controller in this embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the split type commercial power complementary solar street lamp controller in the embodiment, commercial power 220V is converted into a DC12V power supply through an external AC/DC converter and is connected into the controller, the MCU samples the voltage of the storage battery and compares the sampled voltage with a set value, and the relay is used to switch whether the current system is in a commercial power mode or a storage battery mode; the DC12V after the mains supply conversion does not charge the storage battery, and the storage battery does not reversely flow the DC12V, so that the safe and independent operation of the two power supply systems is ensured; the solar cell panel is connected into the system, the storage battery is charged, and meanwhile the LED light source is controlled to be started by judging the voltage of the solar cell panel.

As shown in fig. 1, the system framework diagram of the present embodiment includes a commercial power AC/DC external power supply, a storage battery, a solar panel, an LED light source, a charging circuit, a discharging circuit, a switching circuit, a driving circuit, a power circuit, an MCU, a sampling circuit, a communication circuit, and a display circuit; the solar cell panel charges the storage battery through the charging circuit; the switching circuit selects a proper input source for the discharging circuit, when the voltage of the storage battery is greater than the set switching voltage, the storage battery is the input source, and when the voltage of the storage battery is lower than the set voltage, the commercial power is the input source; the discharging circuit provides constant current for the LED light source, the power supply circuit provides working power supply for the MCU and the driving circuit, and the power supply circuit provides an input source jointly by a commercial power AC/DC power supply, a storage battery and a solar cell panel; the sampling circuit is responsible for collecting each electrical parameter to provide a basis for MCU logic control; the driving circuit provides proper driving voltage and current for the charging circuit, the discharging circuit and the switching circuit; the communication circuit sets proper working parameters for the system; the display circuit provides a visual working state for the system;

as shown in fig. 2, it is a schematic diagram of a circuit topology of the present embodiment, wherein L1, D1, Q3, C1, and C2 form a BOOST constant current discharge circuit; relay J1 is used to switch the input source of the discharge circuit; MOS pipes Q1 and Q2 form a charging circuit, and meanwhile, the storage battery is prevented from reversely supplying power to the battery panel at night; q4 is a load switch for controlling the on and off of the LED load; r17 is a current sampling resistor, and provides a real-time current value of the LED load; the drive circuit converts the TTL level output by the MCU into voltage and current suitable for the work of the MOS tube and the relay;

a load switch control signal LED _ DRV controls a pin 1 of a load switch Q4, a BOOST PWM signal PWM _ DRV controls a pin 1 of a BOOST tube Q3 of a BOOST circuit, a switching signal S _ ON controls a pin 1 of a control pin of a relay J1, and a solar panel control signal PV _ DRV controls a pin 1 of a charging circuit Q1 and a pin 1 of Q2; the negative PV-of the solar panel is connected with the pin 3 of the Q1, and the pin 2 of the Q2 is connected with the pin 2 of the Q1; the positive electrode PV + of the solar panel is connected with the positive electrode BAT + of the storage battery, and the normally closed contact 4 pins of the relay are connected; the pin 5 of the normally open contact of the relay is connected with the positive pole DC + of the mains supply AC/DC 12V; a pin 3 of the common relay contact is connected with a pin 2 of the inductor L1 and a pin 1 of the capacitor C1; a pin 1 of the inductor L1 is connected with a pin 3 of the boosting MOS Q3, a pin 1 of the diode D1 and a pin 2 of the diode D1; a pin 3 of the diode D1 is connected with a pin 1 of the capacitor C2, and the LED load anode LED +; the LED load negative pole LED-is connected with the 3 feet of the load switch Q4; a pin 2 of the load switch Q4 is connected with a pin 2 of the sampling resistor R17; pin 1 of the sampling resistor R17, pin 2 of the capacitor C2, pin 2 of the boosting MOS, pin 2 of the capacitor C1, pin 2 of the relay control, and pin DC of the negative pole of the commercial power AC/DC12V, and the negative pole BAT-of the storage battery are connected with each other, and the signal is the system ground.

As shown in fig. 3, the logic control diagram of this embodiment is specifically implemented as follows:

1. the main control MCU acquires the voltage Vpv of the current solar panel and the voltage Vbat of the storage battery through sampling;

2. comparing the solar panel voltage Vpv and the storage battery voltage Vbat, if Vpv is larger than Vbat, the system enters a PWM charging mode (step 3); if Vpv is less than the set light-on voltage, the system enters a constant current discharge mode (step 4);

3. entering a PWM charging mode, enabling a solar control signal PV _ DRV to be at a high level, and turning on Q1 and Q2; LED _ DRV is low, turning off load switch Q4; the PWM _ DRV outputs low level, and the BOOST circuit is closed; the relay control signal S _ DRV is at low level, and the relay is in a closed state;

4. entering a constant-current discharging state, comparing the voltage VBAT of the current storage battery with the set commercial power switching voltage, and entering a battery to discharge when the voltage VBAT is greater than the switching voltage (step 5); when Vbat < switching voltage, entering commercial power to discharge (step 6);

5. entering a constant-current discharging mode of the storage battery, enabling the solar control signal PV _ DRV to be at a low level, and turning off the charging circuits Q1 and Q2; LED _ DRV turns on the load switch Q4 for high; the PWM _ DRV outputs a PWM waveform of 100KHZ, and the booster circuit is started; the relay control signal S _ DRV is at low level, and the relay is in a closed state; the input source of the booster circuit is a storage battery (shown in fig. 4);

6. entering a commercial power constant current discharging mode, enabling the solar control signal PV _ DRV to be at a low level, and turning off the charging circuits Q1 and Q2; LED _ DRV turns on the load switch Q4 for high; the PWM _ DRV outputs a PWM waveform of 100KHZ, and the booster circuit is started; the relay control signal S _ DRV is high level, and the relay is in a working state; the input source of the booster circuit is the mains supply AC/DC12V power supply (shown in FIG. 5).

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a complementary solar street lamp controller of split type commercial power which characterized in that: the system comprises a commercial power AC/DC external power supply, a storage battery, a solar panel, an LED light source, a charging circuit, a discharging circuit, a switching circuit, a driving circuit, a power circuit, an MCU controller, a sampling circuit, a communication circuit and a display circuit; the solar cell panel charges the storage battery through the charging circuit; the commercial power AC/DC external power supply and the storage battery are respectively connected with the switching circuit, and an input source is selected for the discharging circuit according to the switching voltage; the discharging circuit provides constant current for the LED light source, the power supply circuit provides working power supply for the MCU controller and the driving circuit, and the power supply circuit is composed of a commercial power AC/DC power supply, a storage battery and a solar cell panel and provides an input source together; the sampling circuit is responsible for collecting each electrical parameter to provide a basis for the logic control of the MCU controller; the driving circuit provides proper driving voltage and current for the charging circuit, the discharging circuit and the switching circuit; the communication circuit sets proper working parameters for the system; the display circuit provides a visual operating status for the system.

2. The split type mains supply complementary solar street lamp controller according to claim 1, characterized in that: the charging circuit comprises MOS tubes Q1 and Q2, wherein 1 pin of Q1 and Q2 is respectively connected with a signal port of the driving circuit to control charging of the solar panel, 3 pins of Q1 are connected with the anode of the solar panel, 2 pins of Q2 are connected in series, 3 pins of Q2 are connected with the cathode of the storage battery, and the storage battery is prevented from reversely supplying power to the solar panel at night.

3. The split type mains supply complementary solar street lamp controller according to claim 1, characterized in that: the discharging circuit comprises an inductor L1, a diode D1, a MOS transistor Q3, a capacitor C1 and a capacitor C2, wherein one end of the inductor L1 is connected with the switching circuit, the other end of the inductor L1 is respectively connected with a pin 3 of Q3, a pin 1 and a pin 2 of D1 are connected, a pin 3 of the diode D1 is respectively connected with one end of a capacitor C2, the anode of the LED light source is connected, the other end of the C2 is grounded, one end of the C1 is connected between the L1 and the switching circuit, the other end of the C1 is grounded, a pin 1 of the Q3 is connected with a signal port of the driving circuit, and a pin.

4. The split type mains supply complementary solar street lamp controller according to claim 1, characterized in that: the switching circuit is a relay J1, a pin 3 of a J1 is connected with one end of an L1, a pin 1 is connected with a switching signal port of the driving circuit, a pin 2 is grounded, and pins 4 and 5 are respectively connected with the anode of the storage battery and the anode of the commercial power AC/DC external power supply.

5. The split type mains supply complementary solar street lamp controller according to claim 1, characterized in that: the sampling circuit is a current sampling resistor R17 and provides a real-time current value of an LED load, one end of the R17 is connected with the cathode of an LED light source through an MOS tube Q4, the other end of the R17 is connected with a C2 of a discharge circuit, and a signal port of a 1-pin driving circuit of the Q4 is connected and used for connecting a Q4.

6. The split type mains supply complementary solar street lamp controller according to claim 1, characterized in that: the drive circuit is a UCC27324 chip and converts the TTL level of the MCU controller into voltage and current suitable for the work of the MOS tube and the relay.