CN220169690U

CN220169690U - Divide accuse formula photovoltaic water heater controller

Info

Publication number: CN220169690U
Application number: CN202321298831.2U
Authority: CN
Inventors: 李洪燮; 刘顺涛
Original assignee: Shandong Norite Intelligent Technology Co ltd
Current assignee: Shandong Norite Intelligent Technology Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-12-12
Anticipated expiration: 2033-05-26

Abstract

The utility model relates to the technical field of controllers, in particular to a sub-control type photovoltaic water heater controller; the box body is divided into an upper part and a lower part, the display panel is embedded in the box body of the upper part, and the key panel is embedded in the box body of the lower part; the display panel and the key panel are respectively and electrically connected with a main control board in the box body; the main control board is integrated with a direct current heating module and an alternating current heating module; the direct current heating module comprises a DC/DC module circuit and a direct current heating circuit; the utility model has an alternating current heating module, outputs stable direct current VCC voltage through rectification and capacitance filtering, and the circuit provides a stable power supply for the scheme, and the power supply has strong anti-interference capability and stable output; the direct current heating module is also arranged, the circuit has high efficiency, low heating and stable output; the relay is controlled by the singlechip to perform conversion of direct current heating and alternating current heating, so that the heating is stable, the relay is not easy to damage, and the maintenance cost is reduced.

Description

Divide accuse formula photovoltaic water heater controller

Technical Field

The utility model relates to the technical field of controllers, in particular to a split control type photovoltaic water heater controller.

Background

The photovoltaic water heater is used for applying electric energy converted from sunlight into hot water and heating the water through the photovoltaic electric heating rod; however, the heating degree of the conventional photovoltaic water heater depends on the illumination intensity, and generally when the illumination intensity does not reach the expected value, the water temperature is difficult to reach the set temperature, and auxiliary heating is required to reach the set temperature by the mains supply.

In the actual use process, the photovoltaic water heater needs to judge what conditions are used for photovoltaic heating or commercial power heating, the illumination intensity is different in each period, when the illumination intensity is insufficient, two heating modes can be frequently converted, the relay is easy to damage, and the circuit maintenance cost is high, so that a set of stable control system is needed to be designed, and the direct current heating mode of photovoltaic output and the alternating current heating mode of commercial power output are ensured to be stable.

Disclosure of Invention

The utility model aims to provide a split control type photovoltaic water heater controller so as to solve the problems in the background technology.

In order to achieve the above object, the present utility model provides the following technical solutions: the split control type photovoltaic water heater controller comprises a box body, wherein the box body is divided into an upper part and a lower part, a display panel is embedded in the box body of the upper part, and a key panel is embedded in the box body of the lower part; the display panel and the key panel are respectively and electrically connected with a main control board in the box body; the main control board is integrated with a direct current heating module and an alternating current heating module; the direct current heating module comprises a DC/DC module circuit and a direct current heating circuit; one end of the DC/DC module circuit is connected with a photovoltaic positive electrode of the photovoltaic water heater, the photovoltaic positive electrode is connected with a positive electrode of a diode D6, and a negative electrode of the diode D6 is respectively connected with a chip U6 and a capacitor E4; the capacitor E4 is connected with the resistor R26 in series and then connected with the light Fu Fuji of the photovoltaic water heater; the cathode of the diode D6 is connected with a resistor R9 in series and then connected to the 11 pin of the singlechip U17 for direct-current voltage detection; the GND pin of the chip U6 is connected with the inductor L3 and the diode D13 in sequence and then is connected with a 7805 three-terminal voltage-stabilizing integrated circuit; the direct current heating circuit comprises a triode Q4, wherein the base level of the triode Q4 is connected with a resistor R30 in series and then connected with the 8 pin of the singlechip U17, and the collector of the triode Q4 is connected with a resistor R27 in series and then connected with 12V voltage; the emitter of the triode Q4 is grounded; the collector of the triode Q4 is connected with a relay JK1, one contact of the relay JK1 is connected with the positive electrode of a photovoltaic, the other contact of the relay JK1 is connected with the negative electrode of a diode D18, the positive electrode of the diode D18 is respectively connected with a resistor R12 and the G electrode of an MOS tube, and the other end of the resistor R12 and the D electrode of the MOS tube are respectively connected with a direct current heating negative electrode; the alternating current heating module comprises an AC/DC module circuit and an alternating current heating circuit; the AC/DC module circuit comprises a fuse tube F2, a piezoresistor VR1 and a film capacitor CX1, is connected with the mains supply and filters surge voltage and other interference sources in the current; the AC/DC module circuit also comprises an AC/AC power frequency transformer T1, a capacitor E7, a capacitor E8, a capacitor C11, a capacitor C10, a capacitor C12 and a capacitor C13; the AC/DC module circuit continuously rectifies the filtered current and inputs a stable direct-current VCC voltage; one end of the AC/AC power frequency transformer T1 is connected with a resistor R36 in series and then connected to the 10 pin of the singlechip U17 for AC voltage detection.

Further, the fuse tube F2 is connected in series to the AC/DC module circuit, the varistor VR1 and the thin film capacitor CX2 are both connected in parallel to the AC/DC module circuit, a double-break temperature limiter is connected in series in the AC/DC module circuit, one pin of the AC/AC power frequency transformer T1 is connected with the diode D14, and the other pin of the diode D14 is connected with the capacitor C11, the capacitor E7 and the capacitor C10, respectively; the capacitor C12, the capacitor C13 and the capacitor E8 are connected in parallel to the AC/DC module circuit.

Further, a relay JK2 is connected in series on the alternating-current heating circuit, a pin of the relay JK2 is connected with a heating rod in a coupling mode, the other pin of the relay JK2 is connected with a triode Q1 in a coupling mode, and a base level of the triode Q1 is connected with a resistor R3 in series and then connected to the 4 pin of the singlechip U17 for controlling the alternating-current relay.

Further, 12 pins of the singlechip U17 are connected with a water temperature sensor.

Further, a relay JK1 is connected in series on the electric heating control circuit, a pin of the relay JK1 is connected with a heating rod in a coupling way, the other pin is connected with a triode circuit in a coupling way, and the relay is controlled by the singlechip.

Compared with the prior art, the controller for the sub-control type photovoltaic water heater has the following beneficial effects: 1. the utility model has an alternating current heating module, outputs stable direct current VCC voltage through rectification and capacitance filtering, and the circuit provides a stable power supply for the scheme, and the power supply has strong anti-interference capability and stable output; 2. the utility model has the advantages of direct current heating module, high circuit efficiency, low heating and stable output; 3. the utility model has the advantages that the alternating current heating module and the direct current heating module are arranged, the relay is controlled by the singlechip to perform the conversion of direct current heating and alternating current heating, the heating is stable, the relay is not easy to damage, and the maintenance cost is reduced.

Drawings

FIG. 1 is a schematic view of the structure of the case of the present utility model;

FIG. 2 is a schematic diagram of the circuit structure in the main control board of the present utility model;

FIG. 3 is a schematic diagram of the structure of a singlechip U17;

FIG. 4 is a schematic diagram of a DC/DC module circuit according to the present utility model;

FIG. 5 is a schematic diagram of a DC heating circuit according to the present utility model;

FIG. 6 is a schematic diagram of the circuit configuration of the AC/DC module of the present utility model;

fig. 7 is a schematic diagram of an ac heating circuit according to the present utility model.

The main reference numerals: 1. a case body; 11. a display panel; 12. a key panel; 2. a main control board; 21. a direct current heating module; 22. an alternating current heating module; 23. a water temperature sensor; 24. and a singlechip U17.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described below with reference to the accompanying drawings and detailed description. It will be apparent that the particular embodiments described are not all embodiments of the utility model. All other examples, which may be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present disclosure based on the specific embodiments described.

In order to clearly and concisely illustrate the technical solution of the present utility model, detailed descriptions of known functions and known components in the prior art are omitted.

Referring to fig. 1 to 7, the portable electronic device comprises a box body 1, wherein the box body 1 is divided into an upper part and a lower part, the display panel 11 is embedded in the box body 1 at the upper part, and the key panel 12 is embedded in the box body at the lower part; the display panel and the key panel are respectively and electrically connected with the main control board 2 in the box body; the main control board 2 is integrated with a direct current heating module 21 and an alternating current heating module 22; the direct current heating module 21 comprises a DC/DC module circuit and a direct current heating circuit; one end of the DC/DC module circuit is connected with a photovoltaic positive electrode of the photovoltaic water heater, the photovoltaic positive electrode is connected with a positive electrode of a diode D6, and a negative electrode of the diode D6 is respectively connected with a chip U6 and a capacitor E4; the capacitor E4 is connected with the resistor R26 in series and then connected with the light Fu Fuji of the photovoltaic water heater; the negative electrode of the diode D6 is connected with a resistor R9 in series and then connected to the 11 pin of a singlechip U17 (reference numeral 24) for direct-current voltage detection; and the GND pin of the chip U6 is connected with the inductor L3 and the diode D13 in sequence and then is connected with a 7805 three-terminal voltage-stabilizing integrated circuit.

The direct current heating circuit comprises a triode Q4, wherein the base level of the triode Q4 is connected with a resistor R30 in series and then connected with the 8 pin of the singlechip U17, and the collector of the triode Q4 is connected with a resistor R27 in series and then connected with 12V voltage; the emitter of the triode Q4 is grounded; the collector of the triode Q4 is connected with a relay JK1, one contact of the relay JK1 is connected with the positive pole of a photovoltaic, the other contact is connected with the negative pole of a diode D18, the positive pole of the diode D18 is respectively connected with a resistor R12 and the G pole of a MOS tube U2, and the other end of the resistor R12 and the D pole of the MOS tube U2 are respectively connected with a direct current heating negative pole.

The alternating current heating module comprises an AC/DC module circuit and an alternating current heating circuit; the AC/DC module circuit comprises a fuse tube F2, a piezoresistor VR1 and a film capacitor CX1, is connected with the mains supply and filters surge voltage and other interference sources in the current.

The AC/DC module circuit also comprises an AC/AC power frequency transformer T1, a capacitor E7, a capacitor E8, a capacitor C11, a capacitor C10, a capacitor C12 and a capacitor C13; the AC/DC module circuit continuously rectifies the filtered current and inputs a stable direct-current VCC voltage; one end of the AC/AC power frequency transformer T1 is connected with a resistor R36 in series and then connected to the 10 pin of the singlechip U17 for AC voltage detection.

The fuse tube F2 is connected in series with the AC/DC module circuit, the piezoresistor VR1 and the film capacitor CX2 are connected in parallel with the AC/DC module circuit, a double-temperature limiter is connected in series in the AC/DC module circuit, one pin of the AC/AC power frequency transformer T1 is connected with the diode D14, and the other pin of the diode D14 is respectively connected with the capacitor C11, the capacitor E7 and the capacitor C10; the capacitor C12, the capacitor C13 and the capacitor E8 are connected in parallel to the AC/DC module circuit.

The relay JK2 is connected in series on the alternating-current heating circuit, a pin of the relay JK2 is connected with a heating rod in a coupling way, the other pin is connected with the triode Q1 in a coupling way, and the base level of the triode Q1 is connected with the resistor R3 in series and then connected with the 4 pin of the singlechip U17 for controlling the alternating-current relay.

The 12 pins of the singlechip U17 are connected with a water temperature sensor 23.

The electric heating control circuit is connected with a relay JK1 in series, a pin of the relay JK1 is connected with a heating rod in a coupling way, the other pin is connected with a triode circuit in a coupling way, and the relay is controlled by the singlechip.

Pins 1 and 2 of the singlechip U17 are connected in parallel with a capacitor E8, a capacitor C3 and a capacitor C4, and are connected with +5V voltage; the pin 15 of the singlechip U17 is connected with the collector of the triode Q2, and the collector series resistors R18 and R8 of the triode Q2 are connected into the chip CN1; the emitter of the triode Q2 is connected with the emitter of the triode Q3; the base of the triode Q3 is connected in series with a resistor R24 and then connected to a pin 16 of the singlechip U17, and the collector of the triode Q3 is connected to a chip CN1.

The use parameters of the controller of the sub-control type photovoltaic water heater provided by the utility model are as follows:

1. operating voltage: 220VAC/50Hz

2. Working environment: 0-60 DEG C

3. The temperature measurement range is 0-99 DEG C

4. Temperature measurement precision: (+ -1℃)

5. Controllable alternating current heating: AC220V 50HZ is less than or equal to 2KW

6. Controllable direct current heating: DC is less than 200 and V I is less than or equal to 10A.

Further in connection with fig. 1, the following basic functions are provided: the controller is electrified and operates according to a photovoltaic mode state, when the temperature of the water tank is less than the set photovoltaic heating water tank temperature of-2 ℃, the photovoltaic heating is started, the photovoltaic indicator lamp is lighted, when the temperature of the water tank is more than or equal to the set photovoltaic heating water tank temperature, the photovoltaic heating is turned off, and the photovoltaic indicator lamp is turned off. Specifically:

1. heating in real time: the controller is started, the mode key is pressed to select instant heating, the instant heating indicator lamp is lighted, when the water tank temperature is less than the set instant heating water tank temperature, the controller starts the mains supply for heating, when the water tank temperature is more than or equal to the set instant heating water tank temperature, the controller shuts down the mains supply for heating, the mains supply indicator lamp is extinguished, and the instant heating mode is exited. And the photovoltaic heating normally operates during the instant heating.

2. And (3) intelligent heating: the controller is started, the mode key is pressed for selection, the intelligent heating indicator lamp is lighted, when the controller detects that the temperature of the water tank is less than or equal to the set temperature of the intelligent heating water tank by-5 ℃, the controller automatically starts commercial power heating, when the temperature of the water tank is detected to be less than or equal to the set temperature of the intelligent heating water tank, the controller turns off the commercial power heating, when the temperature of the water tank is detected to be less than or equal to the set temperature of the intelligent heating water tank again, the commercial power indicator lamp is turned off, and when the temperature of the water tank is detected to be less than or equal to the set temperature of the intelligent heating water tank by-5 ℃, the controller automatically turns on the commercial power heating, and the commercial power indicator lamp is lighted. Repeating the heating in this way; pressing the mode key exits the intelligent heating mode. Photovoltaic heating normal operating when intelligent heating.

3. Heating at fixed time: the controller is started, the mode key is pressed for selection, the timing indicator lamp is lighted, when the timing time is up and the water tank temperature is detected to be less than the set instant heating water tank temperature, the controller starts the commercial power for heating, the commercial power indicator lamp is lighted, when the water tank temperature is more than or equal to the set instant heating water tank temperature, the controller exits the timing heating state, and the heating is repeated after 24 hours. The Beijing time has no memory function, and the timing function can be used only after the Beijing time is re-adjusted after the power-on is re-applied, otherwise, the timing time may be incorrect. And the photovoltaic heating is operated normally during the timing heating.

The utility model also has the following safety protection functions:

1. overheat safety protection function: when the electric heating is started, if the temperature in the water tank is detected to be more than or equal to 90 ℃, E4 is displayed, and recovery is performed at a temperature lower than 85 ℃.

2. Anti-freezing protection function: when the water heater is in an electrified state, the commercial power heating is automatically started when the temperature in the water tank is less than or equal to 5 ℃, and the electric heating stops working when the temperature in the water tank is more than or equal to 10 ℃.

3. And (3) dry burning protection: 30. when the temperature rise in seconds is more than or equal to 25 ℃, the temperature display position displays E6, and the controller immediately stops the heating function.

4. Communication failure: the display board and the main board cannot exchange data, and a fault E7 is reported.

5. Alarm fault of water temperature sensor: when the controller detects that the tank temperature sensor is short or open, the controller displays E2.

6. Photovoltaic power supply problem: the controller is provided with a photovoltaic power supply port, so that the utility power can be disconnected, when the voltage of the photovoltaic panel is more than or equal to 25V, the controller can normally display the work, and when the controller only supplies power through the photovoltaic power, the utility power only displays that the heating is not started.

The electrical components mentioned in the specification are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

Those skilled in the art will appreciate that other similar connections may implement the present utility model. Such as welding, bonding, or bolting.

The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present utility model by those skilled in the art, which modifications and equivalents should also be considered as falling within the scope of the present utility model.

Claims

1. The utility model provides a divide accuse formula photovoltaic water heater controller, includes box body, its characterized in that: the box body is divided into an upper part and a lower part, the box body of the upper part is embedded with a display panel, and the box body of the lower part is embedded with a key panel; the display panel and the key panel are respectively and electrically connected with a main control board in the box body; the main control board is integrated with a direct current heating module and an alternating current heating module; the direct current heating module comprises a DC/DC module circuit and a direct current heating circuit; one end of the DC/DC module circuit is connected with a photovoltaic positive electrode of the photovoltaic water heater, the photovoltaic positive electrode is connected with a positive electrode of a diode D6, and a negative electrode of the diode D6 is respectively connected with a chip U6 and a capacitor E4; the capacitor E4 is connected with the resistor R26 in series and then connected with the light Fu Fuji of the photovoltaic water heater; the cathode of the diode D6 is connected with a resistor R9 in series and then connected to the 11 pin of the singlechip U17 for direct-current voltage detection; the GND pin of the chip U6 is connected with the inductor L3 and the diode D13 in sequence and then is connected with a 7805 three-terminal voltage-stabilizing integrated circuit;

the direct-current heating circuit comprises a triode Q4, wherein the base level of the triode Q4 is connected with a resistor R30 in series and then connected with the 8 pin of a singlechip U17, and the collector of the triode Q4 is connected with a resistor R27 in series and then connected with 12V voltage; the emitter of the triode Q4 is grounded; the collector of the triode Q4 is connected with a relay JK1, one contact of the relay JK1 is connected with the positive electrode of a photovoltaic, the other contact of the relay JK1 is connected with the negative electrode of a diode D18, the positive electrode of the diode D18 is respectively connected with a resistor R12 and the G electrode of an MOS tube, and the other end of the resistor R12 and the D electrode of the MOS tube are respectively connected with a direct current heating negative electrode;

the alternating current heating module comprises an AC/DC module circuit and an alternating current heating circuit; the AC/DC module circuit comprises a fuse tube F2, a piezoresistor VR1 and a film capacitor CX1, is connected with the mains supply and filters surge voltage and other interference sources in the current;

the AC/DC module circuit further comprises an AC/AC power frequency transformer T1, a capacitor E7, a capacitor E8, a capacitor C11, a capacitor C10, a capacitor C12 and a capacitor C13; the AC/DC module circuit continuously rectifies the filtered current and inputs a stable direct-current VCC voltage; one end of the AC/AC power frequency transformer T1 is connected with a resistor R36 in series and then connected to the 10 pin of the singlechip U17 for AC voltage detection.

2. The controller of a sub-control type photovoltaic water heater according to claim 1, wherein the fuse tube F2 is connected in series with the AC/DC module circuit, the piezoresistor VR1 and the thin film capacitor CX2 are both connected in parallel with the AC/DC module circuit, the AC/DC module circuit is connected in series with a double-break temperature limiter, one pin of the AC/AC power frequency transformer T1 is connected with the diode D14, and the other pin of the diode D14 is connected with the capacitor C11, the capacitor E7 and the capacitor C10, respectively; the capacitor C12, the capacitor C13 and the capacitor E8 are connected in parallel to the AC/DC module circuit.

3. The controller of claim 1, wherein the ac heating circuit is connected in series with a relay JK2, a pin of the relay JK2 is coupled to a heating rod, another pin is coupled to a triode Q1, and a base stage of the triode Q1 is connected in series with a resistor R3 and then connected to the 4 pin of the single-chip microcomputer U17 for controlling the ac relay.

4. The split control type photovoltaic water heater controller according to claim 1, wherein 12 pins of the single-chip microcomputer U17 are connected with a water temperature sensor.