WO2020039233A1 - Improved solar-powered ventilation and charging system for motor vehicles - Google Patents

Improved solar-powered ventilation and charging system for motor vehicles Download PDF

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Publication number
WO2020039233A1
WO2020039233A1 PCT/IB2018/056413 IB2018056413W WO2020039233A1 WO 2020039233 A1 WO2020039233 A1 WO 2020039233A1 IB 2018056413 W IB2018056413 W IB 2018056413W WO 2020039233 A1 WO2020039233 A1 WO 2020039233A1
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WO
WIPO (PCT)
Prior art keywords
motor vehicle
solar panels
engine
switch
power
Prior art date
Application number
PCT/IB2018/056413
Other languages
French (fr)
Inventor
Kin Wang LEUNG
Original Assignee
Dragon Rainbow Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dragon Rainbow Limited filed Critical Dragon Rainbow Limited
Priority to PCT/IB2018/056413 priority Critical patent/WO2020039233A1/en
Publication of WO2020039233A1 publication Critical patent/WO2020039233A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L8/00—Electric propulsion with power supply from forces of nature, e.g. sun or wind
    • B60L8/003—Converting light into electric energy, e.g. by using photo-voltaic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/18—Buses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/34—Cabin temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Definitions

  • the present invention relates generally to motor vehicles and more particularly pertains to an improved solar-powered ventilation and charging system for motor vehicles where excessive generated could be supplied to an electric grid.
  • T he air conditioning system of the motor vehicle in general operates only when the engine is switched on, but it takes a long time to decrease the temperature inside the motor vehicle especially after the motor vehicle has been exposed to the sun for a long time, thus causing discomfort to drivers and passengers boarding the motor vehicle.
  • the present invention provides an improved solar-powered ventilation and charging system for motor vehicles.
  • the solar-powered ventilation fans of the present invention operate when the engine of the motor vehicle is switched off, thus venting and cooling the motor vehicle interior when the vehicle is stopped.
  • the air conditioning system of the motor vehicle takes over the cooling of the motor vehicle interior and the solar energy generated by the solar panels is then used to supply power to US B charging ports and/or the standby battery.
  • Passengers therefore could charge their electronic devices via the US B charging ports when travelling in the motor vehicles.
  • the standby battery could continue to supply power to the US B charging ports.
  • Excessive solar energy generated by the solar panels could be supplied to the electric grid, in this way the motor vehicles could provide green energy not only for their own use but also for use by the public.
  • the present invention generally comprises a plurality of ventilation fans, a plurality of solar panels, a plurality of US B charging ports, a standby battery, an engine state detection switch, a power discharge module for supplying power to an electric grid and a controller.
  • the ventilation fans are provided within a motor vehicle for displacing hot air therein through a plurality of vents provided at the motor vehicle.
  • the solar panels are provided on a roof of the motor vehicle.
  • the US B charging ports are provided within the motor vehicle.
  • the standby battery is provided within the motor vehicle for supplying power to the US B charging ports.
  • the engine state detection switch is operable between an ' engine-on_ position when the engine is switched on and an ' engine-off_ position when the engine is switched off, wherein the engine state detection switch is electrically connected to the ventilation fans and the solar panels so that power is supplied from the solar panels to the ventilation fans when the engine state detection switch is at the ' engine-off_ position.
  • the controller is electrically connected to the engine state detection switch, the solar panels, the US B charging ports, the standby battery and the power discharge module, wherein when the engine state detection switch is at the ' engine-on_ state, the controller is configured to control the solar panels to supply power to the US B charging ports and/or the standby battery if the standby battery is detected to have a power storage level below a
  • a temperature sensor for determining temperature within the motor vehicle and a temperature cut-off switch electrically connected thereto are further provided.
  • the temperature cut-off switch is configured to be switched off if the temperature determined by the temperature sensor is below a pre-determined level.
  • the temperature cut-off switch is electrically connected to the engine state detection switch and is configured to cut off power supply from the solar panels to the ventilation fans when the temperature cut-off switch is switched off.
  • An emergency switch is provided at a position accessible by a driver of the motor vehicle.
  • the emergency switch is electrically connected to the engine state detection switch and is configured to cut off power supply from the solar panels to the ventilation fans when the emergency switch is activated.
  • the ventilation fans are powered by DC motors, so that with stronger sunshine the ventilation fans would blow faster.
  • the controller is in form of a MP PT controller.
  • the motor vehicle is in form of a double-deck bus.
  • the ventilation fans are provided inside an electrical box behind a rearmost row of seats at a rearmost position of an upper deck of the double-deck bus.
  • the electrical box has a top cover for providing access to interior of the electrical box.
  • the vents are located both on the top cover and a bottom of the electrical box.
  • the top cover of the electrical box is provided with a micro-switch which is operable between a ' cover-open_ position when the top cover is opened and a ' cover-close position when the top cover is closed; the micro-switch is electrically connected to the engine state detection switch and configured to cut off power supply from the solar panels to the ventilation fans when the micro-switch is at the ' cover-open position.
  • the solar panels are fixed on the roof of the motor vehicle using double adhesive tapes, aluminum strips and pop-rivets.
  • the solar panels have power output cables which are grouped together and run longitudinally along the roof and enter interior of the motor vehicle nearside air conditioning ducting of the motor vehicle.
  • FIG . 1 is a schematic circuit diagram of a preferred embodiment of the present invention.
  • FIG . 2 is a perspective view of the electrical box of the double-deck bus in the preferred embodiment of the present invention.
  • the improved solar- powered ventilation and charging system for motor vehicles comprises a plurality of ventilation fans 1 , a plurality of solar panels 2, a plurality of US B charging ports 3, a standby battery 4, an engine state detection switch 5, a power discharge module 12 for supplying power to an electric grid, a controller 6, a temperature sensor (not shown in the drawings), a temperature cut-off switch 7 and an emergency switch 8.
  • the motor vehicle is a double-deck bus which has a total length of about 12m.
  • Two ventilation fans 1 are provided inside an electrical box 91 behind a rearmost row of seats 92 at a rearmost position of an upper deck of the double-deck bus.
  • the ventilation fans 1 are powered by DC motors, so that with stronger sunshine the ventilation fans 1 would blow faster.
  • the electrical box 91 has a top cover 93 for providing access to interior of the electrical box 91 .
  • a plurality of vents 94 are located both on the top cover 93 and a bottom of the electrical box 91.
  • the ventilation fans 1 displace hot air in the double-deck bus through the vents 94.
  • the solar panels 2 there are 20 solar panels 2 in total. E ach of the solar panels 2 is about 1.07m long and 0.66m wide with 35 solar cells in 5 rows. Every two solar panels 2 are connected in series and ten pairs of solar panels 2 are connected in parallel.
  • the solar panels 2 are fixed on the roof of the double-deck bus using double adhesive tapes, aluminum strips and pop-rivets (not shown in the drawings).
  • T he solar panels 2 have power output cables (not shown in the drawings) which are grouped together and run longitudinally along the roof and enter interior of the double-deck bus nearside air conditioning ducting of the double-deck bus (not shown in the drawings).
  • the standby battery 4 is also provided within the double-deck bus for supplying power to the US B charging ports 3.
  • the engine state detection switch 5 is operable between an ' engine-on_ position when the engine of the double-deck bus is switched on and an ' engine-off_ position when the engine of the double deck bus is switched off. T he engine state detection switch 5 is electrically connected to the ventilation fans 1 and the solar panels 2 so that power is supplied from the solar panels 2 to the ventilation fans 1 when the engine state detection switch 5 is at the ' engine-off_ position.
  • the controller 6, which is in form of a MP PT controller in this embodiment, is electrically connected to the engine state detection switch 5, the solar panels 2, the US B charging ports 3, the standby battery 4 and the power discharge module 12, wherein when the engine state detection switch 5 is at the ' engine-on_ position, the controller 6 is configured to control the solar panels 2 to supply power to the US B charging ports 3 and/or the standby battery 4 if the standby battery 4 is detected to have a power storage level below a predetermined level and to control the solar panels 2 to supply power to the power discharge module 12 for supplying power to the electric grid when the standby battery 4 is detected to have a power storage level exceeding the predetermined level.
  • the temperature sensor is used for determining temperature within the double-deck bus.
  • the temperature sensor is electrically connected to the temperature cut-off switch 7.
  • the temperature cut-off switch 7 is configured to be switched off if the temperature determined by the temperature sensor is below a pre-determined level, which in this embodiment is 33 degree Celsius.
  • the temperature cut-off switch 7 is electrically connected to the engine state detection switch 5 and is configured to cut off power supply from the solar panels 2 to the ventilation fans 1 when it is switched off.
  • the emergency switch 8 is provided at a position accessible by a driver of the double-deck bus.
  • the emergency switch 8 is electrically connected to the engine state detection switch 5 and is configured to cut off power supply from the solar panels 2 to the ventilation fans 1 when the emergency switch 8 is activated.
  • the top cover 93 of the electrical box 91 is provided with a micro-switch 10 which is operable between a ' cover-open_ position when the top cover 93 is opened and a ' cover- close position when the top cover 93 is closed.
  • the micro-switch 10 is electrically connected to the engine state detection switch 5 and configured to cut off power supply from the solar panels 2 to the ventilation fans 1 when the micro-switch 10 is at the ' cover-open position.
  • the engine state detection switch 5, the emergency switch 8, the temperature cut-off switch 7 and the micro-switch 10 are connected in series to a main solenoid 1 1 electrically connected between the solar panels 2 and the ventilation fans 1 so that power supply from the solar panels 2 to the ventilation fans 1 will be cut off if any of the followings occurs: (1 ) the engine state detection switch 5 is at the ' engine-on_ position; (2) the emergency switch 8 is activated; (3) the temperature cut-off switch 7 is switched off; and (4) the micro-switch 10 is at the ' cover-open_ position.
  • the above embodiment is a preferred embodiment of the present invention.
  • the present invention is capable of other embodiments and is not limited by the above embodiment. Any other variation, decoration, substitution, combination or simplification, whether in substance or in principle, not deviated from the spirit of the present invention, is replacement or substitution of equivalent effect and falls within the scope of protection of the present invention.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

An improved solar-powered ventilation and charging system for motor vehicles which comprises ventilation fans (1), solar panels (2) provided on a roof of the motor vehicle, USB charging ports (3) provided within the motor vehicle, a standby battery (4) provided within the motor vehicle for supplying power to the USB charging ports (3), an engine state detection switch (5) electrically connected to the ventilation fans (1) and the solar panels (2), a power discharge module (12) for supplying power to an electric grid, and a controller (6). Power is supplied from the solar panels (2) to the ventilation fans (1) when the engine state detection switch (5) is at the 'engine-off_position. When the engine state detection switch (5) is at the 'engine-on_position, the controller (6) is configured to control the solar panels (2) to supply power to the USB charging ports (2) and/or the standby battery (4) if the standby battery (4) is detected to have a power storage level below a predetermined level and to supply power to the power discharge module (12) when the standby battery (4) is detected to have a power storage level exceeding the predetermined level.

Description

IMP R OV E D S O LAR -P OW E R E D VE NTILATIO N AND C HAR G ING SYST E M FO R MOTO R
V E HIC LE S
BAC KG R OU ND O F T HE INVE NTION
The present invention relates generally to motor vehicles and more particularly pertains to an improved solar-powered ventilation and charging system for motor vehicles where excessive generated could be supplied to an electric grid.
When a motor vehicle is parked under the sun, the temperature inside the motor vehicle will increase. T he air conditioning system of the motor vehicle in general operates only when the engine is switched on, but it takes a long time to decrease the temperature inside the motor vehicle especially after the motor vehicle has been exposed to the sun for a long time, thus causing discomfort to drivers and passengers boarding the motor vehicle. BRIE F S U MMARY O F T HE INVE NTIO N
In view of the aforesaid disadvantages now present in the prior art the present invention provides an improved solar-powered ventilation and charging system for motor vehicles. The solar-powered ventilation fans of the present invention operate when the engine of the motor vehicle is switched off, thus venting and cooling the motor vehicle interior when the vehicle is stopped. When the engine of the motor vehicle is switched on, the air conditioning system of the motor vehicle takes over the cooling of the motor vehicle interior and the solar energy generated by the solar panels is then used to supply power to US B charging ports and/or the standby battery. Passengers therefore could charge their electronic devices via the US B charging ports when travelling in the motor vehicles. In night time when there is no sunlight, the standby battery could continue to supply power to the US B charging ports. Excessive solar energy generated by the solar panels could be supplied to the electric grid, in this way the motor vehicles could provide green energy not only for their own use but also for use by the public.
To attain this, the present invention generally comprises a plurality of ventilation fans, a plurality of solar panels, a plurality of US B charging ports, a standby battery, an engine state detection switch, a power discharge module for supplying power to an electric grid and a controller. The ventilation fans are provided within a motor vehicle for displacing hot air therein through a plurality of vents provided at the motor vehicle. The solar panels are provided on a roof of the motor vehicle. The US B charging ports are provided within the motor vehicle. The standby battery is provided within the motor vehicle for supplying power to the US B charging ports. The engine state detection switch is operable between an 'engine-on_ position when the engine is switched on and an 'engine-off_ position when the engine is switched off, wherein the engine state detection switch is electrically connected to the ventilation fans and the solar panels so that power is supplied from the solar panels to the ventilation fans when the engine state detection switch is at the 'engine-off_ position. The controller is electrically connected to the engine state detection switch, the solar panels, the US B charging ports, the standby battery and the power discharge module, wherein when the engine state detection switch is at the 'engine-on_ state, the controller is configured to control the solar panels to supply power to the US B charging ports and/or the standby battery if the standby battery is detected to have a power storage level below a
predetermined level and to control the solar panels to supply power to the power discharge module for supplying power to the electric grid when the standby battery is detected to have a power storage level exceeding the predetermined level.
A temperature sensor for determining temperature within the motor vehicle and a temperature cut-off switch electrically connected thereto are further provided. The temperature cut-off switch is configured to be switched off if the temperature determined by the temperature sensor is below a pre-determined level. The temperature cut-off switch is electrically connected to the engine state detection switch and is configured to cut off power supply from the solar panels to the ventilation fans when the temperature cut-off switch is switched off.
An emergency switch is provided at a position accessible by a driver of the motor vehicle. The emergency switch is electrically connected to the engine state detection switch and is configured to cut off power supply from the solar panels to the ventilation fans when the emergency switch is activated. The ventilation fans are powered by DC motors, so that with stronger sunshine the ventilation fans would blow faster.
The controller is in form of a MP PT controller.
The motor vehicle is in form of a double-deck bus.
The ventilation fans are provided inside an electrical box behind a rearmost row of seats at a rearmost position of an upper deck of the double-deck bus. The electrical box has a top cover for providing access to interior of the electrical box. The vents are located both on the top cover and a bottom of the electrical box.
The top cover of the electrical box is provided with a micro-switch which is operable between a 'cover-open_ position when the top cover is opened and a 'cover-close position when the top cover is closed; the micro-switch is electrically connected to the engine state detection switch and configured to cut off power supply from the solar panels to the ventilation fans when the micro-switch is at the 'cover-open position.
The solar panels are fixed on the roof of the motor vehicle using double adhesive tapes, aluminum strips and pop-rivets.
The solar panels have power output cables which are grouped together and run longitudinally along the roof and enter interior of the motor vehicle nearside air conditioning ducting of the motor vehicle.
BRIE F DE S C RIPTIO N OF T H E DRAWING S
FIG . 1 is a schematic circuit diagram of a preferred embodiment of the present invention.
FIG . 2 is a perspective view of the electrical box of the double-deck bus in the preferred embodiment of the present invention.
DETAILE D DE S C RIPTIO N O F T HE INV E NTIO N
According to a preferred embodiment of the present invention, the improved solar- powered ventilation and charging system for motor vehicles comprises a plurality of ventilation fans 1 , a plurality of solar panels 2, a plurality of US B charging ports 3, a standby battery 4, an engine state detection switch 5, a power discharge module 12 for supplying power to an electric grid, a controller 6, a temperature sensor (not shown in the drawings), a temperature cut-off switch 7 and an emergency switch 8.
In this embodiment, the motor vehicle is a double-deck bus which has a total length of about 12m. Two ventilation fans 1 are provided inside an electrical box 91 behind a rearmost row of seats 92 at a rearmost position of an upper deck of the double-deck bus.
The ventilation fans 1 are powered by DC motors, so that with stronger sunshine the ventilation fans 1 would blow faster.
The electrical box 91 has a top cover 93 for providing access to interior of the electrical box 91 . A plurality of vents 94 are located both on the top cover 93 and a bottom of the electrical box 91. The ventilation fans 1 displace hot air in the double-deck bus through the vents 94.
In this embodiment, there are 20 solar panels 2 in total. E ach of the solar panels 2 is about 1.07m long and 0.66m wide with 35 solar cells in 5 rows. Every two solar panels 2 are connected in series and ten pairs of solar panels 2 are connected in parallel. The solar panels 2 are fixed on the roof of the double-deck bus using double adhesive tapes, aluminum strips and pop-rivets (not shown in the drawings). T he solar panels 2 have power output cables (not shown in the drawings) which are grouped together and run longitudinally along the roof and enter interior of the double-deck bus nearside air conditioning ducting of the double-deck bus (not shown in the drawings).
Twelve US B charging ports 3 are provided within the double-deck bus for passengers to charge their electronic devices. The standby battery 4 is also provided within the double-deck bus for supplying power to the US B charging ports 3. The engine state detection switch 5 is operable between an 'engine-on_ position when the engine of the double-deck bus is switched on and an 'engine-off_ position when the engine of the double deck bus is switched off. T he engine state detection switch 5 is electrically connected to the ventilation fans 1 and the solar panels 2 so that power is supplied from the solar panels 2 to the ventilation fans 1 when the engine state detection switch 5 is at the 'engine-off_ position. The controller 6, which is in form of a MP PT controller in this embodiment, is electrically connected to the engine state detection switch 5, the solar panels 2, the US B charging ports 3, the standby battery 4 and the power discharge module 12, wherein when the engine state detection switch 5 is at the 'engine-on_ position, the controller 6 is configured to control the solar panels 2 to supply power to the US B charging ports 3 and/or the standby battery 4 if the standby battery 4 is detected to have a power storage level below a predetermined level and to control the solar panels 2 to supply power to the power discharge module 12 for supplying power to the electric grid when the standby battery 4 is detected to have a power storage level exceeding the predetermined level.
The temperature sensor is used for determining temperature within the double-deck bus. The temperature sensor is electrically connected to the temperature cut-off switch 7.
The temperature cut-off switch 7 is configured to be switched off if the temperature determined by the temperature sensor is below a pre-determined level, which in this embodiment is 33 degree Celsius. The temperature cut-off switch 7 is electrically connected to the engine state detection switch 5 and is configured to cut off power supply from the solar panels 2 to the ventilation fans 1 when it is switched off.
The emergency switch 8 is provided at a position accessible by a driver of the double-deck bus. The emergency switch 8 is electrically connected to the engine state detection switch 5 and is configured to cut off power supply from the solar panels 2 to the ventilation fans 1 when the emergency switch 8 is activated.
The top cover 93 of the electrical box 91 is provided with a micro-switch 10 which is operable between a 'cover-open_ position when the top cover 93 is opened and a 'cover- close position when the top cover 93 is closed. The micro-switch 10 is electrically connected to the engine state detection switch 5 and configured to cut off power supply from the solar panels 2 to the ventilation fans 1 when the micro-switch 10 is at the 'cover-open position.
As illustrated in FIG . 1, the engine state detection switch 5, the emergency switch 8, the temperature cut-off switch 7 and the micro-switch 10 are connected in series to a main solenoid 1 1 electrically connected between the solar panels 2 and the ventilation fans 1 so that power supply from the solar panels 2 to the ventilation fans 1 will be cut off if any of the followings occurs: (1 ) the engine state detection switch 5 is at the 'engine-on_ position; (2) the emergency switch 8 is activated; (3) the temperature cut-off switch 7 is switched off; and (4) the micro-switch 10 is at the 'cover-open_ position.
The above embodiment is a preferred embodiment of the present invention. The present invention is capable of other embodiments and is not limited by the above embodiment. Any other variation, decoration, substitution, combination or simplification, whether in substance or in principle, not deviated from the spirit of the present invention, is replacement or substitution of equivalent effect and falls within the scope of protection of the present invention.

Claims

C LAIMS What is claimed is:
1. An improved solar-powered ventilation and charging system for a motor vehicle having an engine and comprising
a plurality of ventilation fans provided within a motor vehicle for displacing hot air therein through a plurality of vents provided at the motor vehicle;
a plurality of solar panels provided on a roof of the motor vehicle;
a plurality of US B charging ports provided within the motor vehicle;
a standby battery provided within the motor vehicle for supplying power to the US B charging ports;
an engine state detection switch operable between an 'engine-on_ position when the engine is switched on and an 'engine-off_ position when the engine is switched off, wherein the engine state detection switch is electrically connected to the ventilation fans and the solar panels so that power is supplied from the solar panels to the ventilation fans when the engine state detection switch is at the 'engine-off_ position;
a power discharge module for supplying power to an electric grid; and
a controller which is electrically connected to the engine state detection switch, the solar panels, the US B charging ports, the standby battery and the power discharge module, wherein when the engine state detection switch is at the 'engine-on_ position, the controller is configured to control the solar panels to supply power to the US B charging ports and/or the standby battery if the standby battery is detected to have a power storage level below a predetermined level and to control the solar panels to supply power to the power discharge module for supplying power to the electric grid when the standby battery is detected to have a power storage level exceeding the predetermined level.
2. The improved solar-powered ventilation and charging system for motor vehicles as in C laim 1 , characterized in that it further comprises a temperature sensor for determining temperature within the motor vehicle and a temperature cut-off switch electrically connected thereto; the temperature cut-off switch is configured to be switched off if the temperature determined by the temperature sensor is below a pre-determined level; the temperature cut-off switch is electrically connected to the engine state detection switch and is configured to cut off power supply from the solar panels to the ventilation fans when the temperature cut-off switch is switched off.
3. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 1 , characterized in that an emergency switch is provided at a position accessible by a driver of the motor vehicle; the emergency switch is electrically connected to the engine state detection switch and is configured to cut off power supply from the solar panels to the ventilation fans when the emergency switch is activated.
4. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 1 , characterized in that the ventilation fans are powered by DC motors, so that with stronger sunshine the ventilation fans would blow faster.
5. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 1 , characterized in that the controller is in form of a MP PT controller.
6. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 1 , characterized in that the motor vehicle is in form of a double-deck bus.
7. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 6, characterized in that the ventilation fans are provided inside an electrical box behind a rearmost row of seats at a rearmost position of an upper deck of the double-deck bus; the electrical box has a top cover for providing access to interior of the electrical box; the vents are located both on the top cover and a bottom of the electrical box.
8. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 7, characterized in that the top cover of the electrical box is provided with a micro-switch which is operable between a 'cover-open_ position when the top cover is opened and a 'cover-close position when the top cover is closed; the micro-switch is electrically connected to the engine state detection switch and configured to cut off power supply from the solar panels to the ventilation fans when the micro-switch is at the 'cover- open position.
9. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 1 , characterized in that the solar panels are fixed on the roof of the motor vehicle using double adhesive tapes, aluminum strips and pop-rivets.
10. The improved solar-powered ventilation and charging system for motor vehicles as in Claim 1 , characterized in that the solar panels have power output cables which are grouped together and run longitudinally along the roof and enter interior of the motor vehicle nearside air conditioning ducting of the motor vehicle.
PCT/IB2018/056413 2018-08-24 2018-08-24 Improved solar-powered ventilation and charging system for motor vehicles WO2020039233A1 (en)

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WO2007076822A1 (en) * 2005-12-22 2007-07-12 Webasto Ag Method and controller for auxiliary air-conditioning of a motor vehicle cabin
TW200810979A (en) * 2006-08-29 2008-03-01 Cpumate Inc Solar-powered vehicular air conditioner control system
KR20120086923A (en) * 2011-01-27 2012-08-06 한라공조주식회사 Solar energy utilizing system for vehicle
CN105073481A (en) * 2012-12-21 2015-11-18 丰田自动车株式会社 Charging control device using in-vehicle solar cell
CN105490348A (en) * 2016-01-18 2016-04-13 国家电网公司 Electric vehicle charging/discharging system based on photovoltaic array and energy storage unit
US20160121738A1 (en) * 2014-10-31 2016-05-05 Hyundai Motor Company System and method for using solar cell
CN205632130U (en) * 2016-03-29 2016-10-12 竺林坤 Large -scale passenger service vehicle of new forms of energy power supply
CN107848410A (en) * 2015-07-10 2018-03-27 罗伯特·博世有限公司 Vehicle with the solar panel for producing electric energy

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007076822A1 (en) * 2005-12-22 2007-07-12 Webasto Ag Method and controller for auxiliary air-conditioning of a motor vehicle cabin
TW200810979A (en) * 2006-08-29 2008-03-01 Cpumate Inc Solar-powered vehicular air conditioner control system
KR20120086923A (en) * 2011-01-27 2012-08-06 한라공조주식회사 Solar energy utilizing system for vehicle
CN105073481A (en) * 2012-12-21 2015-11-18 丰田自动车株式会社 Charging control device using in-vehicle solar cell
US20160121738A1 (en) * 2014-10-31 2016-05-05 Hyundai Motor Company System and method for using solar cell
CN107848410A (en) * 2015-07-10 2018-03-27 罗伯特·博世有限公司 Vehicle with the solar panel for producing electric energy
CN105490348A (en) * 2016-01-18 2016-04-13 国家电网公司 Electric vehicle charging/discharging system based on photovoltaic array and energy storage unit
CN205632130U (en) * 2016-03-29 2016-10-12 竺林坤 Large -scale passenger service vehicle of new forms of energy power supply

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