[0023] The present invention draws on the realization ideas of the existing hybrid electric vehicle, uses the electric energy generated by the solar panel as the auxiliary energy supply channel of the automobile air conditioner, while also retaining the energy supply channel used by the existing automobile air conditioner. When the sunlight is strong and the energy supply of solar cells is sufficient, solar power is used first, which can reduce fuel consumption; and when the sunlight is insufficient, it can be converted to the existing energy supply channels of automobile air conditioners. The car engine drives the air-conditioning compressor and is used as an ordinary car air conditioner. Therefore, the solar car air conditioner will not have the problem of insufficient power supply like the solution mentioned in the background art. When users need it, they can provide air conditioning services at any time.
[0024] Based on the above-mentioned technical ideas, in this solar car air conditioner, the original main functional components of the car air conditioner are basically retained. These functional components include air conditioning compressor (compressor), electromagnetic clutch, condenser (condenser), evaporator (evaporator), expansion valve (expansion valve), receiver drier (receiver drier), pipe (hoses), condensing fan, Vacuum solenoid, idler, etc. They are all components of the prior art, and will not be described in detail here.
[0025] The main improvement of the present invention is embodied in the driving part of the above-mentioned air conditioner compressor. The rotating shaft of the existing vehicle air-conditioning compressor is connected to the crankshaft of the engine through a magnetic clutch and a belt to obtain power, which is modified by the present invention. See figure 1 As shown, the original electromagnetic clutch pulley remains unchanged, and another pulley is installed beside the original pulley. This additional pulley is integrated with the original clutch hub and does not affect the function of the clutch front plate. Its function is to connect the power system provided by the solar battery.
[0026] For the newly added solar power system, the present invention installs a DC motor at a suitable position inside the car. The DC motor is driven by the current sent from the solar cell. See figure 2 As shown, a clutch combination bearing (overrunning clutch) is installed on the output shaft of the DC motor, and a pulley is installed outside the clutch combination bearing. Connect the set of pulleys ( figure 1 Shown), thereby driving the operation of the air-conditioning compressor.
[0027] Through the above technical solution, the solar vehicle air conditioner in the present invention can be driven by the original power and the newly equipped solar power supply device of the vehicle. When the car engine drives the air-conditioning compressor, the original function and action of the car’s air-conditioning compressor remain unchanged. After the electromagnetic clutch is activated, the air-conditioning compressor is driven by the car engine. At this time, the additional pulley will drive the pulley on the DC motor to run through the belt, but because figure 2 The overrunning clutch shown has a one-way function and will not drive the DC motor to run. When the DC motor is running, the overrunning clutch drives the pulley on it to rotate, and the belt drives the additional pulley on the air-conditioning compressor to drive the air-conditioning compressor to run. At this time, the original electromagnetic clutch is in a power-off state and will not interfere with the normal operation of the automobile engine.
[0028] image 3 It is a schematic diagram of the circuit part of the solar car air conditioner. Such as image 3 As shown, the solar cell is directly connected to the charging control switch. At the same time, the solar cell is also connected to one end of the voltage comparator, and the other end of the voltage comparator is connected to the battery in the car. The voltage comparator generates a switch control signal to the charging control switch. In this way, solar cells can be used to charge the battery in the car while avoiding overcharging. The output terminals of the solar cell and the battery in the car are connected to the signal logic control FPGA after the undervoltage protection circuit, and the signal logic control FPGA also receives the remote control signal and the car control signal. The signal logic control FPGA and the charging control switch are also connected to the generator/motor conversion control.
[0029] The above-mentioned signal logic control FPGA constitutes the air conditioner start control circuit. The start control circuit receives the control of the remote control and the switch in the car, and realizes the control logic shown in Table 1.
[0030] Remote control signal In-car switch status Overrunning clutch selection Air-conditioning compressor open open Electric motor jobs turn off open engine jobs open turn off Electric motor jobs turn off turn off engine stop
[0031] Table 1
[0032] In the present invention, the charging control switch performs Figure 4 Solar charging control shown and Figure 5 The battery voltage protection function shown. The charging control switch is composed of battery voltage detection and overcurrent protection. When the battery power is insufficient, the vehicle-mounted solar panel provides power to the battery. While supplying power, the voltage of the battery is detected, and when the voltage is insufficient, the battery's power supply to the motor is forcibly cut off. When the battery voltage is greater than the reference voltage, the output signal is normal and the motor can continue to work; when the battery voltage is lower than the reference voltage, the output signal is abnormal, and the battery is forced to cut off the power supply to the motor.
[0033]In the solar car air conditioner, the solar panel covers the top of the car. However, unlike the prior art, flexible solar panels are preferably used in the present invention. Flexible solar panels are made of resin-encapsulated amorphous silicon as the main photoelectric element layer and laid on a bottom plate made of flexible materials. This new type of solar cell can be arbitrarily bent into a curved shape or any irregular shape, so it is an ideal choice for implementing the present invention. For further introduction of flexible solar panels, please refer to the paper "Hybrid Nanorod-Polymer Solar Cells" and "Beijing Science and Technology News" published on pages 2425-2427 of the March 29, 2002 issue of "Science" magazine, March 30, 2005 The article "The new generation of solar cells is as soft as cloth" published in the C15 edition will not be detailed here.
[0034] Although the present invention has been described above through the embodiments, those of ordinary skill in the art know that the present invention has many variations and changes without departing from the spirit of the present invention, and the appended claims will cover these variations and changes.
