A solar power supply system and power supply method for vehicle / ship AC air conditioner

Abstract

The present invention relates to a solar power supply system for vehicle / ship AC air conditioner, which comprises a DC generator, a solar panel, a starting battery, a solar charging inverter integrated machine and an AC air conditioner, wherein the solar charging inverter integrated machine comprises a solar charger, whose input end is connected to the solar panel and whose output end is connected to the starting battery; an inverter, whose input end is connected to the output end of the DC generator, the starting battery and the solar charger; an output transformer, whose input end is connected to the output end of the inverter and whose output end is connected to the AC air conditioner; and an MCU controller, which is connected to the solar panel, the solar charger and the inverter. The present invention can reduce the fuel consumption of vehicles / ships and achieve energy conservation and emission reduction.

Description

Technical Field

[0001] The present invention relates to the field of solar energy new energy technology, and in particular to a solar energy power supply system and a power supply method for a vehicle / ship AC air conditioner. Background Art

[0002] The power source of the on-board DC air conditioner of existing vehicles / ships is the vehicle DC generator, which generates electricity by burning gasoline / diesel, increases exhaust emissions, and consumes non-renewable energy. In addition, when the driver of the vehicle / ship is waiting for loading / unloading in the cab, the vehicle / ship is in a parked or parked state, and the DC generator continues to run at idle speed to provide cooling / heating for the DC air conditioner in the cab, which continuously consumes gasoline / diesel during idling, causing noise pollution and exhaust emission pollution.

[0003] In view of this, the designer of the present invention has made in-depth considerations on the problems existing in the solar power supply of the above-mentioned vehicle / ship AC air conditioner, and thus came up with this project. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a solar power supply system and power supply method for a vehicle / ship AC air conditioner, which can reduce the fuel consumption of the vehicle / ship and achieve energy conservation and emission reduction.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A solar power supply system for vehicle / ship AC air conditioner, comprising a solar panel, a DC generator, a starting battery, and a solar charging inverter integrated machine; the solar panel is connected, the starting battery and the DC generator are connected to the solar charging inverter integrated machine, and the solar charging inverter integrated machine is provided with an AC air conditioner load output terminal;

[0007] The solar charging and inverter integrated machine includes a solar charger unit, a battery charging unit, a charging / inverting unit, a transformer unit and an MCU controller unit;

[0008] The input end of the solar charger unit is connected to the solar panel, and the output end is connected to the input end of the battery charging unit on the one hand, and to the input end of the charging / inverting unit on the other hand; the output end of the battery charging unit is connected to the starting battery, and the starting battery is connected to the input end of the charging / inverting unit; the input end of the charging / inverting unit is also connected to the DC generator, and the output end is connected to the input end of the transformer unit; the output end of the transformer is connected to the AC air conditioning load output end of the solar charging and inverter integrated machine;

[0009] The MCU controller unit is provided with a voltage detection terminal, a solar charging control terminal, a battery charging control terminal, a charging / inversion control terminal, and a generator control terminal. The voltage detection terminal is connected to the solar panel, the solar charging control terminal is connected to the solar charger unit, the battery charging control terminal is connected to the battery charging unit, and the generator control terminal is connected to control the DC generator.

[0010] The solar integrated machine also includes a bypass unit, the input end of the bypass unit is used to connect to the mains, and the output end is connected to the AC air conditioning load output end of the solar charging inverter integrated machine; the MCU controller unit is also provided with a bypass control end, which is connected to the bypass unit.

[0011] The MCU controller is also provided with a current detection terminal, and the current detection terminal is connected to the output terminal of the solar charger.

[0012] The MCU controller is also connected to a liquid crystal monitor.

[0013] A solar power supply method for a vehicle / ship AC air conditioner is implemented by using the solar power supply system for the vehicle / ship AC air conditioner as described above, and is specifically as follows:

[0014] The solar charging inverter integrated machine collects the output voltage value of the solar panel. When the output voltage value of the solar panel meets the input range requirement, the MCU controller unit controls the battery charging unit to turn on, and the solar panel supplies power to the AC air conditioner and charges the starter battery through the solar charging inverter integrated machine.

[0015] a) When the output voltage of the solar panel is greater than V1, the MCU controller unit controls the solar charger unit to perform voltage reduction processing and controls the battery charger to turn on; the solar panel alone supplies power to the AC air conditioner and charges the starter battery through the solar charging inverter integrated machine;

[0016] b) When the output voltage of the solar panel is between V2-V1, the MCU controller unit controls the solar charger unit to output voltage normally and turns off the battery charging unit. The solar panel supplies power to the AC air conditioner through the solar charger unit, charging / inverter unit and transformer unit;

[0017] c) When the output voltage of the solar panel is less than V2, if the DC generator is in working state, the MCU controller unit controls the DC generator and the solar panel to jointly supply power to the AC air conditioner; if the DC generator is turned off, the MCU controller unit controls the battery charging unit to turn on, and the battery and the solar panel are started to jointly supply power to the AC air conditioner;

[0018] When the solar panel supplies power to the AC air conditioner, the MCU controller controls the charging / inverting unit to be in the inverter working mode.

[0019] The solar charging and inverter integrated machine is provided with a bypass unit. When the bypass unit is connected to the mains, the MCU controller unit controls the bypass unit to open, and the mains directly supplies power to the AC air conditioner through the bypass unit; when the mains is connected to the mains, the MCU controller unit turns on the battery charging unit and controls the charging / inverting unit to be in the charging working mode, the mains charges the starting battery through the transformer unit, the charging / inverting unit and the battery charging unit, and the solar panel charges the starting battery through the solar charger and the battery charging unit.

[0020] After adopting the above scheme, the present invention uses solar energy as the main energy source of the AC air conditioner, and when the solar energy is large, the excess energy is input into the starting battery; when the solar energy is small, the AC air conditioner is powered by the DC generator or the starting battery together with the solar panel. This effectively reduces vehicle fuel consumption and achieves energy conservation and emission reduction. At the same time, because the AC air conditioner can still work normally after the vehicle is turned off, the ambient noise in the cab is greatly reduced, creating a comfortable cab environment for the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a connection block diagram of the present invention;

[0022] Figure 2 This is a principle block diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the circuit principle of the present invention.

[0024] Description of labels:

[0025] Solar panels 10;

[0026] DC generator 20;

[0027] Solar charging and inverter integrated machine 30; bypass unit 31; solar charger unit 32; battery charging unit 33; MCU controller unit 34; charging / inverting unit 35; transformer unit 36;

[0028] Starter battery 40;

[0029] AC 50. DETAILED DESCRIPTION

[0030] like Figures 1 to 3As shown, the present invention discloses a solar power supply system for a vehicle / ship AC air conditioner, which includes a solar panel 10, a DC generator 20, a starting battery 40, and a solar charging inverter integrated machine 30; the solar panel 10 is connected to the solar charging inverter integrated machine 30, the starting battery 40 is connected to the solar charging inverter integrated machine 30 through a first DC switch, the DC generator 20 is connected to the solar charging inverter integrated machine 30 through a second DC switch, and the solar charging inverter integrated machine 30 is provided with an AC air conditioner load output terminal, and the AC air conditioner load output terminal is connected to the AC air conditioner 50.

[0031] Specifically, the solar charging and inverter integrated machine 30 includes a bypass unit 31 , a solar charger unit 32 , a battery charging unit 33 , a charging / inverting unit 35 , a transformer unit 36 ​​and an MCU controller unit 34 .

[0032] The input end of the bypass unit 31 is used to connect to the mains, and the output end is connected to the AC air conditioner load output end of the solar charging inverter integrated machine 30. The bypass unit 31 is also connected to the MCU control unit. When the bypass unit 31 is parked, turned off or idling, and the bypass unit 31 is connected to the mains, the MCU control unit controls the bypass unit 31 to open, and the mains directly supplies power to the AC air conditioner 50. At the same time, the MCU control unit can also control the mains to charge the starting battery 40, and the mains can charge the starting battery 40 via the transformer unit 36 ​​and the charging / inverting unit 35.

[0033] The input end of the solar charger unit 32 is connected to the solar panel 10, and the output end is connected to the input end of the battery charging unit 33 on the one hand, and to the input end of the charging / inverting unit 35 on the other hand; the output end of the battery charging unit 33 is connected to the starting battery, and the starting battery is connected to the input end of the charging / inverting unit; the input end of the charging / inverting unit 35 is also connected to the DC generator, and the output end is connected to the input end of the transformer unit; the output end of the transformer is connected to the AC air conditioning load output end of the solar charging and inverter integrated machine;

[0034] The MCU controller is provided with a voltage detection terminal, a solar charging control terminal, a battery charging control terminal, a charging / inverting control terminal, a generator control terminal and a bypass control terminal. The voltage detection terminal is connected to the solar panel 10, the solar charging control terminal is connected to the solar charger unit 32, the battery charging control terminal is connected to the battery charging unit 33, and the generator control terminal is connected to control the DC generator 20. The MCU controller detects the output voltage of the solar panel 10 through the voltage detection terminal to determine the light intensity of the solar panel 10. When the output voltage of the detected solar panel 10 is greater than V1, it means that the light intensity of the solar panel 10 is high, and the MCU controller controls the solar charger unit 32 to perform a voltage reduction process, and the MCU also controls the level charger unit to turn on. At this time, the solar panel 10 supplies power to the AC air conditioner 50 and charges the starting battery 40 through the solar charging inverter integrated machine 30. When the output voltage of the detected solar panel 10 is between V2-V1, it means that the light intensity of the solar panel 10 is moderate, and the energy generated by the solar panel 10 is only enough to supply the AC air conditioner 50. At this time, the MCU controller unit 34 will control the solar charger unit 32 to output voltage normally, and turn off the battery charging unit 33. The solar panel 10 supplies power to the AC air conditioner 50 through the solar charger unit 32, the charging / inverting unit 35, and the transformer unit 36. When the output voltage of the solar panel 10 is less than V2, it means that the solar light intensity is low, and the energy generated by the solar panel 10 is not enough to supply the AC air conditioner 50. At this time, if the DC generator is in working state, the MCU controller unit controls the DC generator and the solar panel to jointly supply power to the AC air conditioner; if the DC generator is turned off, the MCU controller unit controls the battery charging unit to turn on, and starts the battery and the solar panel to jointly supply power to the AC air conditioner. In the process of the solar panel 10 supplying power to the AC air conditioner 50, the MCU controller controls the charging / inverting unit 35 to be in the inverter working mode.

[0035] When the bypass unit 31 is connected to the mains, the MCU controller unit 34 controls the bypass unit 31 to be turned on, and the mains directly supplies power to the AC air conditioner 50 through the bypass unit 31. At this time, the MCU controller unit 34 turns on the battery charging unit 33, and controls the charging / inverting unit 35 to be in the charging working mode, and the mains charges the starting battery 40 through the transformer unit 36, the charging / inverting unit 35, and the battery charging unit 33, and the solar panel 10 also charges the starting battery 40 through the solar charger and the battery charging unit 33.

[0036] Starting batteries 40 of different capacities correspond to different charging currents. Therefore, the MCU controller is also provided with a current detection terminal, which is connected to the output terminal of the solar charger. The user determines the corresponding charging current according to the capacity of the starting battery 40.

[0037] The MCU controller is also connected to a liquid crystal monitor. The liquid crystal monitor communicates with the solar charging inverter integrated machine 30 through the 485 communication protocol, and reads the operating status, data and other information of the entire power supply system in real time. The liquid crystal monitor contains GPRS and Bluetooth wireless modules, and can monitor the operating status and data information of the entire system in real time (such as the power generation and power consumption of the solar panel 10 on the day, historical power generation, power consumption and other data) through the mobile phone APP client and computer application software for recording and analysis.

[0038] The MCU controller unit 34 can output dry contact signals, which can be used for other functions such as AC output load management and abnormal alarm. A remote control interface can also be reserved on the MCU controller to connect an external LED indicator remote control switch panel. The MCU processor can also be connected to a dip switch to set the working mode, AC / DC main mode, battery low voltage protection point preset, battery type setting, balanced charging, energy saving mode, and AC charger setting.

[0039] Based on the above AC air conditioner solar power supply system, the present invention also discloses a vehicle / ship AC air conditioner solar power supply method, which is as follows:

[0040] The solar charging inverter integrated machine 30 collects the output voltage value of the solar panel 10. When the output voltage value of the solar panel 10 (hereinafter referred to as PV) meets the input range requirement (generally under sufficient light conditions), the MCU controller unit 34 controls the battery charging unit 33 to turn on, and the solar panel 10 supplies power to the AC air conditioner 50 and charges the starter battery 40 through the solar charging inverter integrated machine 30.

[0041] a) When the PV output voltage is greater than V1, indicating that the input energy of the solar panel 10 is high (the solar panel 10 is exposed to high light intensity), the MCU controller unit 34 controls the solar charger unit 32 to perform voltage reduction processing and controls the battery charger to turn on; the solar panel 10 alone supplies power to the AC air conditioner 50 through the solar charging inverter integrated machine 30, and charges the starting battery 40;

[0042] b) When the PV output voltage is between V2-V1, indicating that the energy input of the solar panel 10 is normal (the light intensity of the solar panel 10 is moderate), the MCU controller unit 34 will control the solar charger unit 32 to output the voltage normally and turn off the battery charging unit 33. The solar panel 10 supplies power to the AC air conditioner 50 through the solar charger unit 32, the charging / inverting unit 35 and the transformer unit 36.

[0043] c) When the PV output voltage is less than V2, it indicates that the input energy of the solar panel 10 is weak (the light intensity of the solar panel 10 is low). If the DC generator is in working state, the MCU controller unit controls the DC generator and the solar panel to jointly supply power to the AC air conditioner; if the DC generator is turned off, the MCU controller unit controls the battery charging unit to turn on, and starts the battery and the solar panel to jointly supply power to the AC air conditioner.

[0044] In the process of the solar panel 10 supplying power to the AC air conditioner 50 , the MCU controller controls the charging / inverting unit 35 to be in the inverter working mode.

[0045] The solar charging and inverter integrated machine 30 is provided with a bypass unit 31, through which the AC power can directly supply power to the AC air conditioner 50. Specifically, when the bypass unit 31 is connected to the AC power, the MCU controller unit 34 controls the bypass unit 31 to be turned on, and the AC power directly supplies power to the AC air conditioner 50 through the bypass unit 31. At this time, the MCU controller unit 34 turns on the battery charging unit 33, and controls the charging / inverting unit 35 to be in the charging working mode, and the AC power charges the starting battery 40 through the transformer unit 36, the charging / inverting unit 35, and the battery charging unit 33, and the solar panel 10 also charges the starting battery 40 through the solar charger and the battery charging unit 33.

[0046] In summary, when the vehicle / boat is driving during the day, the solar panel 10 collects solar energy, and the solar charging inverter integrated machine 30 inverts the DC power into 230Vac / 50Hz AC power for the vehicle / boat's AC air conditioner 50. In the case of sufficient sunlight, solar energy can meet the daily driving cooling / heating needs of the AC air conditioner 50; when the solar energy obtained is greater than the energy required by the AC air conditioner 50, the excess solar energy can be used by other DC load devices through the original vehicle starting battery 40, maximizing the use of solar energy for power supply.

[0047] In the parking / parking / idling state, when there is sufficient sunlight, solar energy can meet the daily driving cooling / heating needs of the AC air conditioner 50; when the solar energy obtained is greater than the energy required by the AC air conditioner 50, the excess solar energy can be used by other DC load devices through the original vehicle starting battery 40, maximizing the use of solar energy for power supply. When the sunlight becomes weak, the solar panel 10 and the vehicle / ship DC generator 20 generate electricity and supply power to the charging inverter integrated machine together, converting the DC power into 230Vac / 50Hz AC power for the vehicle's AC air conditioner 50.

[0048] When the vehicle / boat is turned off: When there is sufficient sunlight, solar energy can meet the daily driving cooling / heating needs of the AC air conditioner 50; when the solar energy obtained is greater than the energy required by the AC air conditioner 50, the excess solar energy can be used by other DC load devices through the original vehicle starting battery 40, maximizing the use of solar power supply. When the sunlight becomes weak, the solar energy and the vehicle's original vehicle starting battery 40 are discharged to supply power to the solar charging inverter integrated machine 30, and the DC power is inverted into 230Vac / 50Hz AC power for the AC air conditioner 50; when the starting battery 40 continues to discharge to the DC low voltage protection value of the solar charging inverter integrated machine 30, the power supply is stopped and the solar power supply system is shut down.

[0049] The key point of the present invention is that the present invention uses solar energy as the main energy source of the AC air conditioner 50, and when the solar energy is large, the excess energy is input into the starting battery 40; and when the solar energy is small, the DC generator 20 or the starting battery and the solar panel 10 are used together to power the AC air conditioner 50. This effectively reduces the fuel consumption of the vehicle and achieves energy conservation and emission reduction. At the same time, because the AC air conditioner can still work normally after the vehicle is turned off, the ambient noise in the cab is greatly reduced, creating a comfortable cab environment for the driver and passengers.

[0050] The above description is merely an embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A solar power supply system for vehicle / ship AC air conditioner, characterized by: It includes a solar panel, a DC generator, a starting battery, and a solar charging inverter integrated machine; the solar panel is connected, the starting battery and the DC generator are connected to the solar charging inverter integrated machine, and the solar charging inverter integrated machine is provided with an AC air conditioning load output terminal; The solar charging and inverter integrated machine includes a solar charger unit, a battery charging unit, a charging / inverting unit, a transformer unit and an MCU controller unit; The input end of the solar charger unit is connected to the solar panel, and the output end is connected to the input end of the battery charging unit on the one hand, and to the input end of the charging / inverting unit on the other hand; the output end of the battery charging unit is connected to the starting battery, and the starting battery is connected to the input end of the charging / inverting unit; the input end of the charging / inverting unit is also connected to the DC generator, and the output end is connected to the input end of the transformer unit; the output end of the transformer is connected to the AC air conditioning load output end of the solar charging and inverter integrated machine; The MCU controller unit is provided with a voltage detection terminal, a solar charging control terminal, a battery charging control terminal, a charging / inversion control terminal, and a generator control terminal. The voltage detection terminal is connected to the solar panel, the solar charging control terminal is connected to the solar charger unit, the battery charging control terminal is connected to the battery charging unit, and the generator control terminal is connected to control the DC generator.

2. A solar power supply system for vehicle / ship AC air conditioner according to claim 1, characterized in that: The solar integrated machine also includes a bypass unit, the input end of the bypass unit is used to connect to the mains, and the output end is connected to the AC air conditioning load output end of the solar charging inverter integrated machine; the MCU controller unit is also provided with a bypass control end, which is connected to the bypass unit.

3. A solar power supply system for vehicle / ship AC air conditioner according to claim 1, characterized in that: The MCU controller is also provided with a current detection terminal, and the current detection terminal is connected to the output terminal of the solar charger.

4. A solar power supply system for vehicle / ship AC air conditioner according to claim 1, characterized in that: The MCU controller is also connected to a liquid crystal monitor.

5. A solar power supply method for vehicle / ship AC air conditioner, characterized by: It is implemented by using the solar power supply system of the vehicle / ship AC air conditioner as claimed in claim 1, specifically as follows: The solar charging inverter integrated machine collects the output voltage value of the solar panel. When the output voltage value of the solar panel meets the input range requirement, the MCU controller unit controls the battery charging unit to turn on, and the solar panel supplies power to the AC air conditioner and charges the starter battery through the solar charging inverter integrated machine. a) When the output voltage of the solar panel is greater than V1, the MCU controller unit controls the solar charger unit to perform voltage reduction processing and controls the battery charger to turn on; the solar panel alone supplies power to the AC air conditioner and charges the starter battery through the solar charging inverter integrated machine; b) When the output voltage of the solar panel is between V2-V1, the MCU controller unit controls the solar charger unit to output voltage normally and turns off the battery charging unit. The solar panel supplies power to the AC air conditioner through the solar charger unit, charging / inverter unit and transformer unit; c) When the output voltage of the solar panel is less than V2, if the DC generator is in working state, the MCU controller unit controls the DC generator and the solar panel to jointly supply power to the AC air conditioner; If the DC generator is turned off, the MCU controller unit controls the battery charging unit to turn on, and the battery and solar panel are started to supply power to the AC air conditioner together; When the solar panel supplies power to the AC air conditioner, the MCU controller controls the charging / inverting unit to be in the inverter working mode.

6. A solar power supply method for vehicle / ship AC air conditioner according to claim 5, characterized in that: The solar charging and inverter integrated machine is provided with a bypass unit. When the bypass unit is connected to the mains, the MCU controller unit controls the bypass unit to open. When the mains directly supplies power to the AC air conditioner through the bypass unit, the MCU controller unit turns on the battery charging unit and controls the charging / inverting unit to be in a charging working mode. The mains charges the starting battery through the transformer unit, the charging / inverting unit and the battery charging unit, and the solar panel charges the starting battery through the solar charger and the battery charging unit.

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