CN110932378A - Solar-charged refrigerator - Google Patents
Solar-charged refrigerator Download PDFInfo
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- CN110932378A CN110932378A CN201911293747.XA CN201911293747A CN110932378A CN 110932378 A CN110932378 A CN 110932378A CN 201911293747 A CN201911293747 A CN 201911293747A CN 110932378 A CN110932378 A CN 110932378A
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- thyristor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
Abstract
The invention discloses a solar charging refrigerator, which comprises a central control unit, a solar panel management unit, a voltage conversion unit and an automatic charging control unit, wherein the central control unit is used for controlling the solar panel management unit; the central control unit controls other units to work normally; the solar panel management unit is used for managing the normal work of the external solar panel; the charging automatic control unit controls the charging and discharging voltage of the circuit to automatically charge and discharge, stops charging after charging is finished, and stops discharging when discharging to set electric quantity; and the voltage conversion unit is used for converting the voltage into the voltage required by each working circuit of the refrigerator. The invention improves the intelligent degree of the refrigerator, can automatically charge and discharge, increases the solar charging function and prevents food stored in the refrigerator from deteriorating due to the stop of the refrigerator after power failure.
Description
Technical Field
The invention relates to a charging refrigerator, and belongs to the field of solar power generation.
Background
As a new production industry, the intelligent household appliance is at a critical point of a lead-in period and a growth period, the market consumption concept is not formed yet, but with further implementation of popularization and popularization of the intelligent household market, the use habit of consumers is developed, the consumption potential of the intelligent household appliance market is inevitably huge, and the industrial prospect is bright.
In household appliances, a refrigerator is required to be in a working state at all times because of the function of storing food, the traditional refrigerator is connected with a power grid through a socket and is powered by the power grid, and the refrigerator can continuously work as long as the voltage is stable and is not influenced by other factors.
However, the conventional refrigerator still depends on the power grid to work, and if the power is cut off, the refrigerator still stops working, so that the food stored in the refrigerator goes bad.
Disclosure of Invention
The purpose of the invention is as follows: a solar energy charging refrigerator is provided to solve the above problems.
The technical scheme is as follows: a solar energy charging refrigerator comprises a central control unit, a solar panel management unit, a voltage conversion unit and an automatic charging control unit;
the central control unit controls other units to work normally;
the solar panel management unit is used for managing the normal work of the external solar panel;
the charging automatic control unit controls the charging and discharging voltage of the circuit to automatically charge and discharge, stops charging after charging is finished, and stops discharging when discharging to set electric quantity;
and the voltage conversion unit is used for converting the voltage into the voltage required by each working circuit of the refrigerator.
According to one aspect of the invention, the central control unit comprises an MCU control chip, receives signals of each unit and sends out signals to control other unit circuits.
According to one aspect of the invention, the solar panel management unit comprises a solar panel arranged outside and a rechargeable battery arranged inside the solar-charged refrigerator, wherein the solar panel receives solar energy and converts the solar energy into electric energy to store the electric energy, and the rechargeable battery is charged when the electric quantity of the rechargeable battery is insufficient.
According to an aspect of the present invention, the charging automatic control unit includes a charging automatic control circuit including a transformer TR1, a rectifier bridge BR1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a potentiometer RV1, a potentiometer RV2, a potentiometer RV3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, a zener diode D2, a diode D3, an integrated circuit U3, a thyristor U3, a rechargeable battery BAT 3, and a relay RL 3, wherein a 1 st pin of the transformer TR 72 is connected to an input voltage, a 2 nd pin of the transformer TR 3 is connected to a BR 3 th pin of the rectifier bridge TR 72, and a BR 3 th pin of the rectifier bridge is connected to the rectifier bridge TR 3, a 1 st pin of the rectifier bridge BR1 is connected to one end of the capacitor C1, the anode of the diode D1, the anode of the zener diode D2, one end of the capacitor C4, a 1 st pin of the integrated circuit U1, one end of the capacitor C5, the emitter of the transistor Q2, one end of the resistor R8, a 2 nd pin of the potentiometer RV3, one end of the resistor R10, one end of the capacitor C3, and the cathode of the thyristor U2 are all grounded, a 4 th pin of the rectifier bridge BR1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the other end of the capacitor C9, one end of the resistor R2, and the collector of the transistor Q1, the base of the transistor Q1 is connected to the other end of the resistor R2, the cathode of the diode D1, and the anode of the thyristor U2, and the emitter of the resistor Q1 is connected to one end of the resistor R5, A 1 st pin of the potentiometer RV1, a 3 rd pin of the potentiometer RV1, an anode of the photodiode D4 and one end of an inductor of the relay RL1 are connected, a cathode of the zener diode D2 is connected to one end of the resistor R3, one end of the capacitor C2, the 8 th pin of the integrated circuit U1, the 4 th pin of the integrated circuit U1 and the other end of the resistor R5, respectively, the other end of the capacitor C2 is grounded, the other end of the resistor R3 is connected to one end of the resistor R4, an anode of the diode D3 and a 7 th pin of the integrated circuit U1, the other end of the resistor R4 is connected to the other end of the capacitor C4, a cathode of the diode D3, a 6 th pin of the integrated circuit U1 and a 2 nd pin of the integrated circuit U1, a 5 th pin of the integrated circuit U1 is connected to the other end of the capacitor C5, a pin 3 of the integrated circuit U1 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to a base of the triode Q2, a collector of the triode Q2 is connected to a base of the triode Q3, a base of the triode Q4 and one end of the resistor R6, the other end of the resistor R6 is connected to a pin 2 of the potentiometer RV1, a collector of the triode Q3 is connected to an emitter of the triode Q4 and one end of the resistor R9, a collector of the triode Q4 is connected to a cathode of the diode D4, the other end of the resistor R9 is connected to a positive electrode of the rechargeable battery BAT1, a pin 1 of the potentiometer RV2 and a pin 3 of the potentiometer RV2, a cathode of the rechargeable battery BAT1 is connected to one end of a switch of the relay RL1, and the other end of the switch of the relay RL1 and the inductor RL1 are all grounded, a 2 nd pin of the potentiometer RV2 is connected to a 1 st pin of the potentiometer RV3, and a 3 rd pin of the potentiometer RV3 is connected to the other end of the resistor R10, the other end of the capacitor C3, and a control electrode of the thyristor U2.
According to one aspect of the invention, the integrated circuit U1 is a time base integrated circuit NE555, which constitutes a time base control system and is automatically charged.
According to one aspect of the invention, the thyristor U2 is a one-way thyristor, and controls the charging to stop.
According to an aspect of the present invention, the voltage conversion unit further includes a voltage conversion circuit, which includes a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a thyristor U7, a thyristor U8, a diode D11, a diode D12, a zener diode D13, a zener diode D14, a zener diode D15, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a transistor Q14, and a transistor Q14, wherein one end of the resistor R14 is connected to one end of the resistor R14, an anode of the thyristor U14, and one end of the capacitor C14 are connected to an input voltage, and the other end of the resistor R14 is connected to the T14 of the thyristor U14, the positive electrode of the resistor R14, and the other end of the positive electrode of the resistor R14 are connected to the input voltage of the input diode R14, the other end of the resistor R27, the T1 pole of the thyristor U7, one end of the resistor R37, the other end of the capacitor C11 and one end of the capacitor C16 are all connected to output voltage, the G pole of the thyristor U7 is connected to one end of the resistor R35, the other end of the resistor R35 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to the anode of the diode D12, the other end of the resistor R37 is connected to the cathode of the zener diode D15, one end of the resistor R38 and one end of the capacitor C15, the anode of the zener diode D15 is connected to the control pole of the thyristor U8, the cathode of the thyristor U8 is grounded, the cathode of the diode D11 is connected to one end of the resistor R29, one end of the capacitor C12 and one end of the resistor R30, the other end of the capacitor C12 is grounded, and the other end of the resistor R30 is connected to the anode of the zener diode D13, One end of the resistor R31 is connected, the cathode of the zener diode D13 is connected to one end of the resistor R32 and the base of the transistor Q8, the collector of the transistor Q8 is connected to the other end of the resistor R29, the cathode of the zener diode D14, one end of the resistor R33 and one end of the capacitor C13, the emitter of the transistor Q8 is connected to the other end of the resistor R31, the other end of the resistor R32, the other end of the resistor R33, the other end of the capacitor C13, one end of the resistor R34, one end of the capacitor C14, the emitter of the transistor Q9, the other end of the capacitor C15, the other end of the resistor R38 and the other end of the capacitor C16, the cathode of the zener diode D14 is connected to the other end of the resistor R34, the other end of the capacitor C14 and the base of the transistor Q9, the collector of the transistor Q9 is connected to the cathode of the diode D12.
According to one aspect of the invention, the controllable silicon U7 is a bidirectional controllable silicon and controls output voltage, and the controllable silicon U8 is a unidirectional controllable silicon and forms a voltage-multiplying rectification overvoltage protection circuit.
Has the advantages that: the invention improves the intelligent degree of the refrigerator, can automatically charge and discharge, increases the solar charging function and prevents food stored in the refrigerator from deteriorating due to the stop of the refrigerator after power failure.
Drawings
Fig. 1 is a system block diagram of the solar-charged refrigerator of the present invention.
Fig. 2 is a schematic diagram of the charge automatic control circuit of the present invention.
Fig. 3 is a schematic diagram of a voltage conversion circuit of the present invention.
Detailed Description
As shown in fig. 1, in this embodiment, a solar energy charging refrigerator includes a central control unit, a solar panel management unit, a voltage conversion unit, and an automatic charging control unit;
the central control unit controls other units to work normally;
the solar panel management unit is used for managing the normal work of the external solar panel;
the charging automatic control unit controls the charging and discharging voltage of the circuit to automatically charge and discharge, stops charging after charging is finished, and stops discharging when discharging to set electric quantity;
and the voltage conversion unit is used for converting the voltage into the voltage required by each working circuit of the refrigerator.
In a further embodiment, the central control unit comprises an MCU control chip, which receives signals from each unit and sends signals to control other unit circuits.
In a further embodiment, the solar panel management unit comprises a solar panel arranged outside and a rechargeable battery arranged inside the solar-charged refrigerator, wherein the solar panel receives solar energy and converts the solar energy into electric energy to store the electric energy, and the rechargeable battery is charged when the electric quantity of the rechargeable battery is insufficient.
As shown in fig. 2, in a further embodiment, the charging automatic control unit includes a charging automatic control circuit, which includes a transformer TR1, a rectifier bridge BR1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a potentiometer RV1, a potentiometer RV2, a potentiometer RV3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, a zener diode D2, a diode D3, an integrated circuit U3, a thyristor U3, a rechargeable battery BAT 3, and a RL 3, wherein a 1 st pin of the transformer TR 3 is connected to an input voltage, a 2 nd pin of the transformer TR 3, a BR 3 th pin of the transformer TR 3 is connected to a first pin of the rectifier bridge TR 363, and a rectifier bridge BR 6863 of the rectifier bridge TR 3, a 1 st pin of the rectifier bridge BR1 is connected to one end of the capacitor C1, the anode of the diode D1, the anode of the zener diode D2, one end of the capacitor C4, a 1 st pin of the integrated circuit U1, one end of the capacitor C5, the emitter of the transistor Q2, one end of the resistor R8, a 2 nd pin of the potentiometer RV3, one end of the resistor R10, one end of the capacitor C3, and the cathode of the thyristor U2 are all grounded, a 4 th pin of the rectifier bridge BR1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the other end of the capacitor C9, one end of the resistor R2, and the collector of the transistor Q1, the base of the transistor Q1 is connected to the other end of the resistor R2, the cathode of the diode D1, and the anode of the thyristor U2, and the emitter of the resistor Q1 is connected to one end of the resistor R5, A 1 st pin of the potentiometer RV1, a 3 rd pin of the potentiometer RV1, an anode of the photodiode D4 and one end of an inductor of the relay RL1 are connected, a cathode of the zener diode D2 is connected to one end of the resistor R3, one end of the capacitor C2, the 8 th pin of the integrated circuit U1, the 4 th pin of the integrated circuit U1 and the other end of the resistor R5, respectively, the other end of the capacitor C2 is grounded, the other end of the resistor R3 is connected to one end of the resistor R4, an anode of the diode D3 and a 7 th pin of the integrated circuit U1, the other end of the resistor R4 is connected to the other end of the capacitor C4, a cathode of the diode D3, a 6 th pin of the integrated circuit U1 and a 2 nd pin of the integrated circuit U1, a 5 th pin of the integrated circuit U1 is connected to the other end of the capacitor C5, a pin 3 of the integrated circuit U1 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to a base of the triode Q2, a collector of the triode Q2 is connected to a base of the triode Q3, a base of the triode Q4 and one end of the resistor R6, the other end of the resistor R6 is connected to a pin 2 of the potentiometer RV1, a collector of the triode Q3 is connected to an emitter of the triode Q4 and one end of the resistor R9, a collector of the triode Q4 is connected to a cathode of the diode D4, the other end of the resistor R9 is connected to a positive electrode of the rechargeable battery BAT1, a pin 1 of the potentiometer RV2 and a pin 3 of the potentiometer RV2, a cathode of the rechargeable battery BAT1 is connected to one end of a switch of the relay RL1, and the other end of the switch of the relay RL1 and the inductor RL1 are all grounded, a 2 nd pin of the potentiometer RV2 is connected to a 1 st pin of the potentiometer RV3, and a 3 rd pin of the potentiometer RV3 is connected to the other end of the resistor R10, the other end of the capacitor C3, and a control electrode of the thyristor U2.
In this embodiment, the charging voltage is transformed by the transformer TR1, rectified by the rectifier bridge BR1, and then regulated by the zener diode D2 to the integrated circuit U1, and then amplified and outputted by the transistor Q2, the transistor Q3, and the transistor Q4, the controllable silicon U2 is conducted, the charging voltage is normal, the switch of the relay RL1 is closed, the rechargeable battery BAT1 is charged normally, when the voltage of the capacitor C5 increases after charging, the integrated circuit U1 outputs low level, the controllable silicon U2 is cut off, the charging voltage is lower, the switch of the relay RL1 is turned off, the rechargeable battery BAT1 stops charging, the potentiometer RV1 is adjusted to control the pull-in voltage of the relay RL1, the potentiometer RV2 is adjusted to control the divided voltage of the output voltage of the integrated circuit U1, and the potentiometer RV3 is adjusted to control the cut-off voltage of the silicon controlled rectifier U2.
As shown in fig. 3, in a further embodiment, the voltage conversion unit further includes a voltage conversion circuit, which includes a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a thyristor U7, a thyristor U8, a diode D11, a diode D12, a zener diode D13, a zener diode D14, a zener diode D15, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a transistor Q14, and a transistor Q14, wherein one end of the resistor R14 and one end of the resistor R14, an anode of the thyristor U14 and one end of the capacitor C14 are connected to the input voltage, and the other end of the resistor R14 are connected to the anode T14, the positive pole of the thyristor R14, and the positive pole of the resistor R14, the other end of the resistor R27, the T1 pole of the thyristor U7, one end of the resistor R37, the other end of the capacitor C11 and one end of the capacitor C16 are all connected to output voltage, the G pole of the thyristor U7 is connected to one end of the resistor R35, the other end of the resistor R35 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to the anode of the diode D12, the other end of the resistor R37 is connected to the cathode of the zener diode D15, one end of the resistor R38 and one end of the capacitor C15, the anode of the zener diode D15 is connected to the control pole of the thyristor U8, the cathode of the thyristor U8 is grounded, the cathode of the diode D11 is connected to one end of the resistor R29, one end of the capacitor C12 and one end of the resistor R30, the other end of the capacitor C12 is grounded, and the other end of the resistor R30 is connected to the anode of the zener diode D13, One end of the resistor R31 is connected, the cathode of the zener diode D13 is connected to one end of the resistor R32 and the base of the transistor Q8, the collector of the transistor Q8 is connected to the other end of the resistor R29, the cathode of the zener diode D14, one end of the resistor R33 and one end of the capacitor C13, the emitter of the transistor Q8 is connected to the other end of the resistor R31, the other end of the resistor R32, the other end of the resistor R33, the other end of the capacitor C13, one end of the resistor R34, one end of the capacitor C14, the emitter of the transistor Q9, the other end of the capacitor C15, the other end of the resistor R38 and the other end of the capacitor C16, the cathode of the zener diode D14 is connected to the other end of the resistor R34, the other end of the capacitor C14 and the base of the transistor Q9, the collector of the transistor Q9 is connected to the cathode of the diode D12.
In this embodiment, after the power voltage is input, half-wave rectification is performed through the diode D11, the capacitor C12 forms a dc sampling voltage after filtering, one path of the voltage is divided by the resistor R30 and the resistor R31, and a reference voltage is formed at the anode of the zener diode D13; the other path is divided by the resistor R29 and the resistor R33 at the same time, and a direct current bias voltage for the zener diode D14 and the triode Q9 is established at the anode of the zener diode D14. A reference voltage is applied to the zener diode D13 to break it down and conduct it when the supply voltage is greater than 160V. When the power supply voltage is greater than 160V, the reference voltage rises, so that the zener diode D13 is broken down and conducted, the voltage obtained by the resistor R32 quickly saturates and conducts the triode Q8, and the collector voltage of the triode Q8 drops to 0V; the dc bias voltage also drops to 0V, so that the zener diode D14 and the transistor Q9 lose bias and are turned off, and the thyristor U7 has no trigger current and is in an off state. At this time, the capacitor C5 and the capacitor C6 are connected in series for filtering, and the voltage on the capacitor C5 and the capacitor C6 is direct-current output voltage and is sent to the next stage of voltage stabilization. When the power supply voltage is lower than or equal to 160V, the zener diode D13 is cut off, the base of the triode Q8 is cut off without bias, the collector potential of the triode Q8 is a dc bias voltage, which makes the zener diode D14 conduct in reverse direction, the resistor R34 and the capacitor C14 are connected in parallel to obtain a dc voltage, and the dc voltage is added to the base of the triode Q9 to make the triode Q9 conduct in saturation, thus triggering the thyristor U7 to conduct. When the power voltage is more than 160V, the silicon controlled rectifier U7 is turned off to form bridge rectification, but if the silicon controlled rectifier U7 has an interpolar breakdown short-circuit fault, the mode is converted into a double-voltage rectification mode, the direct-current output voltage is greatly increased, and the direct-current output voltage is obviously dangerous for electric appliances. For this purpose, a voltage-doubling rectifying overvoltage protection circuit is provided, and the voltage-doubling rectifying overvoltage protection circuit consists of the resistor R27, the resistor R37, the resistor R38, the voltage stabilizing diode D15 and the silicon controlled rectifier U8. When the direct-current voltage is over-voltage, the detection voltage of the cathode of the zener diode D15 divided by the resistor R27, the resistor R37 and the resistor R38 is increased, so that the zener diode D15 is broken down and conducted, and the thyristor U8 obtains a trigger level to conduct, thereby playing a role of power-off protection.
In summary, the present invention has the following advantages: the intelligent degree of the refrigerator is improved, charging and discharging can be automatically carried out, the solar charging function is increased, and the situation that food stored in the refrigerator is deteriorated due to the fact that the refrigerator stops working after power failure is prevented.
It is to be noted that the respective technical features described in the above embodiments are combined in any appropriate manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (8)
1. A solar energy charging refrigerator is characterized by comprising a central control unit, a solar panel management unit, a voltage conversion unit and an automatic charging control unit;
the central control unit controls other units to work normally;
the solar panel management unit is used for managing the normal work of the external solar panel;
the charging automatic control unit controls the charging and discharging voltage of the circuit to automatically charge and discharge, stops charging after charging is finished, and stops discharging when discharging to set electric quantity;
and the voltage conversion unit is used for converting the voltage into the voltage required by each working circuit of the refrigerator.
2. The solar energy charging refrigerator according to claim 1, wherein the central control unit comprises an MCU control chip for receiving data signals and sending signals to control other circuits to work normally.
3. The solar energy charging refrigerator according to claim 1, wherein the solar panel management unit comprises a solar panel disposed outside and a rechargeable battery disposed inside the solar energy charging refrigerator, the solar panel receives solar energy and converts the solar energy into electric energy for storage, and the rechargeable battery is charged when the electric quantity of the rechargeable battery is insufficient.
4. The solar energy charging and cooling device as claimed in claim 1, wherein the charging automatic control unit comprises a charging automatic control circuit including a transformer TR1, a rectifier bridge BR1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a potentiometer RV1, a potentiometer RV2, a potentiometer RV3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a diode D1, a zener diode D2, a diode D3, a diode D4, an integrated circuit U1, a thyristor U2, a rechargeable battery BAT1 and a relay RL1, the 1 st pin of the transformer TR1 is connected to an input voltage, the 2 nd pin of the transformer TR1 is connected to the BR 3 nd pin of the rectifier bridge TR1, a 4 th pin of the transformer TR1 is connected to a 3 rd pin of the rectifier bridge BR1, a 1 st pin of the rectifier bridge BR1 is connected to one end of the capacitor C1, an anode of the diode D1, an anode of the zener diode D2, one end of the capacitor C4, a 1 st pin of the integrated circuit U1, one end of the capacitor C5, an emitter of the transistor Q2, one end of the resistor R8, a 2 nd pin of the potentiometer RV3, one end of the resistor R10, one end of the capacitor C3, and a cathode of the thyristor U2, a 4 th pin of the rectifier bridge BR1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the other end of the capacitor C1, one end of the resistor R2, and a collector of the transistor Q1, a base of the transistor Q1 is connected to the other end of the resistor R2, the cathode of the diode D1, and a cathode of the thyristor 2, an emitter of the triode Q1 is respectively connected with one end of the resistor R5, the 1 st pin of the potentiometer RV1, the 3 rd pin of the potentiometer RV1, the anode of the photodiode D4 and one end of an inductor of the relay RL1, a cathode of the zener diode D2 is respectively connected with one end of the resistor R3, one end of the capacitor C2, the 8 th pin of the integrated circuit U1, the 4 th pin of the integrated circuit U1 and the other end of the resistor R5, the other end of the capacitor C2 is grounded, the other end of the resistor R3 is respectively connected with one end of the resistor R4, the anode of the diode D3 and the 7 th pin of the integrated circuit U1, the other end of the resistor R4 is respectively connected with the other end of the capacitor C4, the cathode of the diode D3, the 6 th pin of the integrated circuit U1 and the 2 nd pin of the integrated circuit U1, a 5 th pin of the integrated circuit U1 is connected to the other end of the capacitor C5, a 3 rd pin of the integrated circuit U1 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to a base of the triode Q2, a collector of the triode Q2 is connected to a base of the triode Q3, a base of the triode Q4 and one end of the resistor R6, the other end of the resistor R6 is connected to a 2 nd pin of the potentiometer RV1, a collector of the triode Q3 is connected to an emitter of the triode Q4 and one end of the resistor R9, a collector of the triode Q4 is connected to a cathode of the diode D4, the other end of the resistor R9 is connected to an anode of the rechargeable battery BAT1, a 1 st pin of the potentiometer RV2 and a 3 rd pin of the potentiometer RV2, and a cathode of the rechargeable battery BAT1 is connected to one end of the switch of the relay 1, the other end of the switch of the relay RL1 and the other end of the inductor of the relay RL1 are both grounded, the 2 nd pin of the potentiometer RV2 is connected with the 1 st pin of the potentiometer RV3, and the 3 rd pin of the potentiometer RV3 is respectively connected with the other end of the resistor R10, the other end of the capacitor C3 and the control electrode of the thyristor U2.
5. The solar-charged refrigerator according to claim 4, wherein the integrated circuit U1 is a time base integrated circuit NE 555.
6. The solar-charged refrigerator according to claim 4, wherein the thyristor U2 is a one-way thyristor.
7. The solar energy charging and cooling device according to claim 1, wherein the voltage converting unit further comprises a voltage converting circuit, which comprises a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a thyristor U7, a thyristor U8, a diode D11, a diode D12, a zener diode D13, a zener diode D14, a zener diode D15, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a triode Q14 and a triode Q14, wherein one end of the resistor R14 and one end of the resistor R14, an anode of the thyristor U14 and one end of the capacitor C14 are connected to an input voltage, and the other end of the thyristor R14 and the positive pole T14 are connected to the input voltage of the positive pole of the positive resistor R14 and the positive pole of the thyristor R14 and the positive pole 14, the other end of the resistor R27, the T1 pole of the thyristor U7, one end of the resistor R37, the other end of the capacitor C11 and one end of the capacitor C16 are all connected to output voltage, the G pole of the thyristor U7 is connected to one end of the resistor R35, the other end of the resistor R35 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to the anode of the diode D12, the other end of the resistor R37 is connected to the cathode of the zener diode D15, one end of the resistor R38 and one end of the capacitor C15, the anode of the zener diode D15 is connected to the control pole of the thyristor U8, the cathode of the thyristor U8 is grounded, the cathode of the diode D11 is connected to one end of the resistor R29, one end of the capacitor C12 and one end of the resistor R30, the other end of the capacitor C12 is grounded, and the other end of the resistor R30 is connected to the anode of the zener diode D13, One end of the resistor R31 is connected, the cathode of the zener diode D13 is connected to one end of the resistor R32 and the base of the transistor Q8, the collector of the transistor Q8 is connected to the other end of the resistor R29, the cathode of the zener diode D14, one end of the resistor R33 and one end of the capacitor C13, the emitter of the transistor Q8 is connected to the other end of the resistor R31, the other end of the resistor R32, the other end of the resistor R33, the other end of the capacitor C13, one end of the resistor R34, one end of the capacitor C14, the emitter of the transistor Q9, the other end of the capacitor C15, the other end of the resistor R38 and the other end of the capacitor C16, the cathode of the zener diode D14 is connected to the other end of the resistor R34, the other end of the capacitor C14 and the base of the transistor Q9, the collector of the transistor Q9 is connected to the cathode of the diode D12.
8. The solar energy charging refrigerator according to claim 1, wherein the thyristor U7 is a bidirectional thyristor, and the thyristor U8 is a unidirectional thyristor.
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