Solar cooling device installed on automobile
By installing a ducted fan system driven by foldable solar panels inside the car, air circulation inside the car is achieved, solving the problem of high temperature inside the car in open parking lots and improving the comfort of the in-car environment.
Patent Information
- Application Number
- CN202211627906.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-17
- Publication Date
- 2026-03-03
AI Technical Summary
When a car is parked in an open-air parking lot, the temperature inside the car rises because the air cannot circulate with the outside, making the owner feel extremely uncomfortable when entering the car.
Foldable solar panels are installed to generate electricity from solar power to drive a ducted fan for air circulation inside the car. An automatic temperature control switch is used to control the intake of fresh air and the exhaust of hot air to ensure air circulation inside the car.
It effectively reduces the temperature inside the car, reduces driver fatigue, and improves passenger comfort.
Smart Images

Figure CN121590219A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the installation of solar cooling devices on cars parked in open-air parking lots. Background Technology
[0002] When a car is parked in an open-air parking lot and exposed to the sun, the air inside the car heats up. When the driver opens the car door, a stream of hot air escapes from the car. When the driver gets in and drives, it feels like entering an oven, as the hot air cannot escape. The driver feels very uncomfortable after being in the car for a while. The reason for the high temperature inside the car is that there is no convection between the air inside and outside the car, and a lot of heat accumulates inside the car and cannot dissipate. Summary of the Invention
[0003] The purpose of this invention is to provide a solar-powered cooling device for automobiles, which effectively prevents the air temperature inside the car from rising and uses solar energy to generate electricity for cooling. This solves the problem of making the driver feel more relaxed when entering the car and reducing driving fatigue.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a solar cooling device for automobiles, comprising a foldable solar panel, a solar controller, a solar battery, a duct fan, an automatic temperature control switch, wires, an inverter, a hose, an inner grille, a gate valve, variable cross-section pipe fittings, a tee fitting, and a circular sleeve; characterized in that: after the automobile is parked in an open-air parking lot, the foldable solar panel is opened and placed under the windshield mirror of the driver's cab. The foldable solar panel generates electricity and stores it in the solar battery when exposed to sunlight. When the air inside the vehicle rises to the set temperature, the automatic temperature control switch is turned on, the blades of the fan in the left exhaust duct rotate to draw air from outside the vehicle into the vehicle, and the blades of the fan in the right exhaust duct rotate to draw hot air out of the vehicle.
[0005] The folding solar panel is connected to a solar controller via wires. The solar controller is connected to a solar battery via wires. The solar battery is connected to an inverter via wires. The inverter is connected to an automatic temperature control switch and a duct fan via wires. The output power is AC, and the duct fan uses a 220V AC motor. Alternatively, the solar battery is connected to an automatic temperature control switch and a duct fan via wires. The output power is DC, and the duct fan uses a DC motor. The interior grille is installed behind the rear seat headrest, not exceeding the height and width of the headrest, so as not to obstruct the driver's view. The upper end of the interior grille is connected to a flexible hose, which passes through a partition hole. The lower end of the flexible hose is connected to a variable cross-section pipe fitting, which is connected to the duct fan. The duct fan is connected to the variable cross-section pipe... The system consists of a variable cross-section pipe fitting connected to a gate valve, which in turn connects to the middle section of a tee fitting. The upper end of the tee fitting has a nut, and the lower end connects to a circular sleeve. A hole is drilled through the bottom plate of the car's trunk, through which the circular sleeve passes. The middle section is welded to the bottom plate, and the lower section of the circular sleeve protrudes outside the vehicle. The duct fan is fixed to a pad, which is installed at the corner of the bottom plate of the car's trunk. The air supply system and exhaust system have the same structure, both being closed ventilation ducts. The air supply rotates clockwise, and the exhaust rotates counterclockwise. The circular sleeve is installed on the bottom plate of the car's trunk, or it can be installed on the side panel behind the trunk. Two circular or polygonal holes are made in the side panel of the car's trunk to connect the circular sleeve.
[0006] Furthermore, the feature is that: the inner grille is installed behind the rear seat headrests; there is a partition between the rear seat back and the trunk; holes are drilled in the partition, and flexible hoses pass through these holes to connect to the inner grille; one hole is drilled on each of the left and right sides of the trunk floor, one hole on the left side for air supply and the other on the right side for exhaust. Exhaust is achieved by the motor of a ducted fan drawing hot air out of the vehicle. Correspondingly, two partitions are also drilled between the rear seat back and the trunk. Holes: A ventilation hole is drilled through the left side of the car's trunk floor, and an exhaust hole is drilled through the right side. A circular sleeve passes through these holes, with its middle section welded to the trunk floor. Half of the circular sleeve protrudes outside the vehicle. The upper end of the sleeve connects to the lower end of a T-fitting fitting. An inner tube with a filter is installed inside the T-fitting fitting. A nut is installed at the upper end of the T-fitting fitting, and the middle section connects to a gate valve. Two circular or polygonal holes are drilled in the car's sidewall panel to install grille boxes. The sidewall of the grille box is connected to the car's sidewall panel. The grille box has a circular hole on the back, through which a circular sleeve connects to the back of the grille box. A grille flap is installed at the grille box opening. The grille box can be circular or polygonal. The taillights are integrated with the grille flap for aesthetic decoration. Outside air enters through the grille flap. The circular sleeve connects to a T-junction fitting, and the middle section of the T-junction fitting connects to a gate valve. To start the duct fan for exhaust and ventilation, the gate valve is opened to connect to outside air; to stop the duct fan for exhaust and ventilation, the gate valve is closed. The duct fan is installed in the corner of the rear trunk. When driving, the folded solar panel is stored in the middle of the passenger seat. The solar controller, solar battery, and inverter are stored in the rear trunk, secured in a dedicated box. The inner grille is a device for supplying and exhausting air into the vehicle. It can be circular or rectangular and is installed in the gap between the rear seat headrest and the rear seat roof, without obstructing the driver's view. The duct fan is installed at the left corner of the rear trunk floor, which is the location of the exhaust duct fan, and at the right corner of the rear trunk floor, which is the location of the exhaust duct fan.
[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention relates to a solar-powered cooling device for automobiles. When a car is parked in an open-air parking lot under direct sunlight, the air inside the car will not be too hot. When the owner opens the car door, it reduces the amount of hot air escaping from the car, making it more comfortable to sit in the seats. The owner and guests will feel comfortable as they enter the car. Attached Figure Description
[0008] Figure 1 It is a plan view and elevation view of the vehicle. Figure 2 It involves placing foldable solar panels under the front seat mirror, with the inverter, ducted fan, etc., on the flat side of the car's trunk. (Elevation drawing) Figure 3This is a plan view of the AC power connections for foldable solar panels, solar batteries, duct fans, etc. Figure 4 This is a plan view showing the wiring connections for foldable solar panels, solar batteries, duct fans, automatic temperature control switches, etc. Figure 5 It refers to hoses, duct fans, gate valves, sleeves, gaskets, etc., on the plane, elevation, and section of the trunk floor of a car. Figure 6 It is a detailed cross-section of the trunk floor of a car, including components such as inner grilles, hoses, duct fans, gate valves, sleeves, and gaskets. Figure 7 These are details of hoses, duct fans, pads, etc., on the floor of the car trunk, the side wall panels (flat and vertical surfaces), and the rear facade of the car. Figure 8 These are detailed cross-sectional views of hoses, duct fans, gate valves, gaskets, car trunk floor panels, grille boxes, car side panels, etc. Figure 9 This is a detailed elevation of the sleeve at the rear of the vehicle before the grille is installed; there is also an elevation drawing of the grille box at the rear of the vehicle. Figure 10 This is a connection plan of foldable solar panels, solar batteries, hoses, duct fans, etc. Figure 11 This is a plan view showing the connection of wires to foldable solar panels, solar batteries, duct fans, etc., using direct current. Figure 12 It includes the plan view, elevation view, and cross-section of the inner tube and filter screen. Figure 13 It involves installing foldable solar panels under the front seat mirror, and ducted fans on the trunk floor. (Elevation drawing) Figure 14 This is a plan view showing the connection of foldable solar panels, solar batteries, duct fans, etc., to a direct current circuit. Figure 15 It includes plan and elevation views of the locations of holes in the car trunk floor and partitions. In the diagram: 1. Folded solar panel; 2. Solar controller; 3. Solar battery; 4. Duct fan; 5. Automatic temperature control switch; 6. Hoose; 7. Gate valve; 8. Variable cross-section pipe fitting; 9. Inner grille; 10. Wire; 11. Inverter; 12. T-fitting; 13. Nut; 14. Filter screen; 15. Inner tube; 16. Spacer block; 17. Car trunk floor; 18. Car side panel; 19. Grille box; 20. Grille leaf; 21. Circular sleeve; 22. Headlight; 23. Bottom plate hole; 24. Partition hole. Detailed Implementation
[0009] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0010] Please see Figure 1-15 A car is equipped with a solar-powered cooling device, including a foldable solar panel 1, a solar controller 2, a solar battery 3, a duct fan 4, an automatic temperature control switch 5, wires 10, an inverter 11, a hose 6, an inner grille 9, a gate valve 7, a variable cross-section pipe fitting 8, a tee fitting 12, and a circular sleeve 21; its characteristic is that after the car is parked in an open-air parking lot, the foldable solar panel 1 is unfolded and placed under the windshield mirror of the driver's side. The foldable solar panel 1 generates electricity under sunlight and stores it in the solar battery 3. When the air inside the car rises to the set temperature, the electricity is automatically released into the battery. When the automatic temperature control switch 5 is turned on, the blades of the fan 4 in the left exhaust duct rotate, drawing outside air into the vehicle. The blades of the fan 4 in the right exhaust duct rotate, drawing hot air out of the vehicle. The folded solar panel 1 is connected to the solar controller 2 via wire 10. The solar controller 2 is connected to the solar battery 3 via wire 10. The solar battery 3 is connected to the inverter 11 via wire 10. The inverter 11 is connected to the automatic temperature control switch 5 and the duct fan 4 via wire 10. The output power is AC. The duct fan 4 uses a 220V AC motor (see [reference]). Figure 2 , Figure 3 , Figure 4 The solar battery 3 is connected to the automatic temperature control switch 5 and the duct fan 4 via wire 10. The output power is direct current (DC). The duct fan 4 uses a DC motor (see [link]). Figure 11 , Figure 13 , Figure 14 The inner grille 9 inside the car is installed behind the rear seat headrest, not exceeding the height and width of the headrest, and does not obstruct the driver's view. The upper end of the inner grille 9 is connected to the hose 6, which passes through the partition hole 24. The lower end of the hose 6 is connected to the variable cross-section fitting 8, which is connected to the duct fan 4. The duct fan 4 is connected to the variable cross-section fitting 8, which is connected to the gate valve 7. The gate valve 7 is connected to the middle section of the tee fitting 12. The upper end of the tee fitting 12 is a nut 13, and the lower end of the tee fitting 12 is connected to a round sleeve. Pipe 21, a circular sleeve 21 is drilled through hole 23 in the trunk floor 17, and the middle section is welded to the trunk floor 17. The lower section of the circular sleeve 21 protrudes outside the vehicle. The duct fan 4 is fixed to the pad 16, which is fixedly installed at the corner of the trunk floor 17. The air supply system and the exhaust system have the same structure, both being closed ventilation ducts. The air supply rotates clockwise, and the exhaust rotates counterclockwise. The circular sleeve 21 is installed in the trunk floor 17 (see...). Figure 5 , Figure 6 The circular sleeve 21 is installed behind the tailgate on the side panel 18 of the vehicle, with two circular or polygonal holes made in the side panel 18 (see...). Figure 9 The inner grille 9 is installed behind the rear seat headrests. There is a partition between the rear seat back and the trunk. Holes 24 are drilled in the partition, and a flexible hose 6 passes through these holes to connect to the inner grille 9. Two holes 23 are drilled in the trunk floor 17 (see...). Figure 15 One hole is on the left side of the trunk floor 17, which is a sealed air supply duct; the other hole is on the right side of the trunk floor 17, which is a sealed exhaust duct. Exhaust is achieved by the motor of the duct fan 4 drawing hot air from inside the vehicle to the outside. Correspondingly, two partition holes 24 are drilled in the partition between the rear seat back and the trunk (see...). Figure 15 ).
[0011] A hole 23 is drilled through each of the left and right sides of the trunk floor 17. The hole 23 on the left is a ventilation hole, and the hole 23 on the right is a vent hole. A circular sleeve 21 passes through the hole 23. The middle section of the circular sleeve 21 is welded to the trunk floor 17, and half of the circular sleeve 21 is exposed outside the vehicle. The upper end of the circular sleeve 21 is connected to the lower end of the T-fitting fitting 12. An inner tube 15 is installed inside the T-fitting fitting 12. The inner tube 15 has a filter screen 14. The end is fitted with nut 13, and the middle section of the tee fitting 12 is connected to the gate valve 7; the side panel 18 of the car has two circular or polygonal holes, and the grille box can be a circular or polygonal box body. A grille box 19 is installed, and the side wall of the grille box 19 is connected to the side panel 18 of the car. A circular hole is opened on the back of the grille box 19, and a circular sleeve 21 passes through the circular hole and connects to the back of the grille box 19. A grille leaf 20 is installed at the opening of the grille box 19. The taillights 22 are combined with the grille leaf 20 for aesthetic decoration. Outside air enters through the grille leaf 20 (see...). Figure 7 , Figure 8 , Figure 9 The circular sleeve 21 connects to the tee fitting 12, and the middle section of the tee fitting 12 connects to the gate valve 7. To start the duct fan 4 for ventilation, the gate valve 7 is opened to connect with the outside air; to stop the duct fan 4 from ventilation, the gate valve 7 is closed. The duct fan 4 is installed in the corner of the rear trunk. When driving, the folded solar panel 1 is folded up and placed in the middle of the passenger seat. The solar controller 2, solar battery 3, and inverter 11 are placed in the rear trunk, and their positions are fixed in a special box. The inner grille 9 is a device for supplying and exhausting air into the vehicle. It can be circular or rectangular. The inner grille 9 is installed in the gap between the rear seat headrest and the rear seat top, so as not to affect the driver's vision. The duct fan 4 is installed at the left corner of the trunk floor 17, which is the position of the exhaust duct fan 4, which is a sealed air supply duct. The duct fan 4 is installed at the right corner of the trunk floor 17, which is the position of the exhaust duct fan 4, which is a sealed exhaust duct.
[0012] The foldable solar panel 1 generates electricity when exposed to sunlight. The positive terminal of the foldable solar panel 1 is connected to the positive terminal of the solar controller 2, and the negative terminal is connected to the negative terminal of the solar controller 2. The positive terminal of the solar battery 3 is connected to the positive terminal of the solar controller 2, and the negative terminal is connected to the negative terminal of the solar controller 2. The positive terminal of the inverter 11 is connected to the positive terminal of the solar battery 3, and the negative terminal of the inverter 11 is connected to the negative terminal of the solar battery 3. A three-way connector 12 contains an inner tube 15 with a filter screen 14 to prevent dust and particles from entering the vehicle. The filter screen 14 should be replaced periodically. When solar cooling is not needed, tighten the nut 13 at the top of the three-way connector 12. The foldable solar panel 1 is obliquely mounted under the front seat mirror. The size of the solar panel is determined by the interior space of the car. The specifications of the foldable solar panel 1 are 350mm × 600mm to 400mm × 800mm. The rated power of the duct fan 4 is 20W to 50W. The fan 4 has a diameter of 100mm to 160mm, and the flexible hose 6 has a diameter of 35mm to 60mm.
[0013] The specific procedure is as follows: After parking the car in an open-air parking lot, turn off the engine, adjust the start time of the automatic temperature control switch 5, and then take the folding solar panel 1 and place it diagonally under the front window mirror. The front of the solar panel is exposed to sunlight. When the predetermined time arrives, the circuit is connected, and the blades of the exhaust fan 4 and the ventilation fan 4 rotate, drawing outside air into the car and expelling hot air from the car. When the owner returns to drive the car, open the car door, first remove the folding solar panel 1 from the front window and place it in the middle of the passenger seat or in the trunk, turn off the automatic temperature control switch 5, close the car door, and start the engine.
[0014] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A car-mounted solar cooling device, comprising a folding solar panel (1), a solar controller (2), a solar battery (3), a duct fan (4), an automatic temperature control switch (5), wires (10), an inverter (11), a hose (6), an inner grille (9), a gate valve (7), a variable cross-section pipe fitting (8), a tee fitting (12), and a circular sleeve (21); characterized in that: After the car is parked in an open-air parking lot, the folding solar panel (1) is opened and placed under the front window glass mirror of the driver's cab. The folding solar panel (1) generates electricity and stores it in the solar battery (3) when exposed to sunlight. When the air inside the car rises to the set temperature, the automatic temperature control switch (5) is turned on. The fan blades of the left exhaust pipe fan (4) rotate to draw the outside air into the car. The fan blades of the right exhaust pipe fan (4) rotate to draw the hot air inside the car out of the car. The folded solar panel (1) is connected to the solar controller (2) by wire (10), the solar controller (2) is connected to the solar battery (3) by wire (10), the solar battery (3) is connected to the inverter (11) by wire (10), the inverter (11) is connected to the automatic temperature control switch (5) and the duct fan (4) by wire (10), and the output power is AC power. The duct fan (4) uses a 220V AC motor. The solar battery (3) is connected to the automatic temperature control switch (5) and the duct fan (4) by wire (10), and the output power is DC power. The duct fan (4) uses a DC motor. The inner grille (9) inside the car is installed behind the rear seat headrest, not exceeding the height and width of the headrest, and does not obstruct the driver's driving view. The inner grille (9) is connected to the upper end of the hose (6). The hose (6) passes through the partition hole (24). The lower end of the hose (6) is connected to the variable cross-section pipe fitting (8). The variable cross-section pipe fitting (8) is connected to the duct fan (4). The duct fan (4) is connected to the variable cross-section pipe fitting (8). The variable cross-section pipe fitting (8) is connected to the gate valve (7). The gate valve (7) is connected to the middle section of the tee fitting (12). The tee fitting (12) The upper end is a nut (13), the lower end of the tee fitting (12) is connected to a round sleeve (21), the bottom plate of the car trunk (17) is drilled through the bottom plate hole (23), the round sleeve (21) passes through the bottom plate hole (23), the middle section is welded to the bottom plate of the car trunk (17), and the lower section of the round sleeve (21) is exposed outside the car; the pipe fan (4) is installed on the pad (16) and fixed, the pad (16) is fixedly installed at the corner of the bottom plate of the car trunk (17); the round sleeve (21) is installed on the side wall panel (18) behind the trunk; The inner grille (9) is installed behind the headrest of the rear seat. There is a partition between the back of the rear seat and the trunk. A partition hole (24) is drilled in the partition. The hose (6) passes through the partition hole (24) and connects to the inner grille (9). Two bottom holes (23) are drilled in the bottom plate (17) of the trunk. One hole is on the left side of the bottom plate (17) of the trunk, and the other hole is on the right side of the bottom plate (17). Correspondingly, two partition holes (24) are also drilled in the partition between the back of the rear seat and the trunk.
2. The automobile solar cooling device according to claim 1, characterized in that... A hole (23) is drilled through the bottom plate (17) on the left and right sides of the car trunk. The upper end of the circular sleeve (21) is connected to the lower end of the tee fitting (12). An inner tube (15) is installed inside the tee fitting (12). The inner tube (15) has a filter screen (14). A nut (13) is installed at the upper end of the tee fitting (12). The middle section of the tee fitting (12) is connected to the gate valve (7).
3. The automobile solar cooling device according to claim 1, characterized in that... Two circular or polygonal holes are opened in the side wall panel (18) of the car for installing the grille box (19). The grille box can be a circular or polygonal box. The side wall of the grille box (19) is connected to the side wall panel (18) of the car. A circular hole is opened on the back of the grille box (19). A circular sleeve (21) is connected to the back of the grille box (19). A grille leaf (20) is installed at the opening of the grille box (19).
4. The automobile solar cooling device according to claim 1, characterized in that... The circular sleeve (21) is connected to the tee fitting (12). The middle section of the tee fitting (12) is connected to the gate valve (7). To start the duct fan (4) for ventilation, open the gate valve (7) to connect with the outside air. To stop the duct fan (4) from ventilating, close the gate valve (7).
5. The automobile solar cooling device according to claim 1, characterized in that... The duct fan (4) is installed in the corner of the trunk. When driving, the solar panel (1) is folded up and placed in the middle of the passenger seat. The solar controller (2), solar battery (3), and inverter (11) are placed in the trunk, and their positions are fixed in a special box.
6. The automobile solar cooling device according to claim 1, characterized in that... The inner grille (9) is a device for supplying and exhausting air into the vehicle. It can be round or rectangular. The inner grille (9) is installed in the gap between the rear seat headrest and the rear seat top, so as not to affect the driver's vision.
7. The automobile solar cooling device according to claim 1, characterized in that... The duct fan (4) is installed at the left corner of the car trunk floor (17), which is the position of the exhaust duct fan (4). The duct fan (4) is installed at the right corner of the car trunk floor (17), which is the position of the exhaust duct fan (4).