CN113511091A - Energy-saving charging pile and energy-saving method thereof - Google Patents
Energy-saving charging pile and energy-saving method thereof Download PDFInfo
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- CN113511091A CN113511091A CN202110603377.6A CN202110603377A CN113511091A CN 113511091 A CN113511091 A CN 113511091A CN 202110603377 A CN202110603377 A CN 202110603377A CN 113511091 A CN113511091 A CN 113511091A
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/51—Photovoltaic means
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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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
The invention provides an energy-saving charging pile and an energy-saving method thereof, comprising the following steps: the pressure generating devices are arranged on the parking spaces; the photoelectric sensor is arranged at the entrance of the parking space; the storage battery is connected with the pressure generating device and the photoelectric sensor; a first wireless communication module connected with the photoelectric sensor; the charging pile is connected with the first wireless communication module; the charging pile comprises a controller; the second wireless communication module is connected with the controller; a charge control circuit connected to the controller; the first relay is connected with the charging control circuit; the charging gun is connected with the first relay; a connection detection device provided on the charging gun; a display connected with the controller; an infrared sensor connected with the controller; a power supply unit connected with the controller; the second relay is connected with the power supply unit and the controller, and meanwhile, the first relay is connected with the second relay; reduce the energy consumption when charging for electric automobile, improved the energy-conserving ability of filling electric pile.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an energy-saving charging pile and an energy-saving method of the energy-saving charging pile.
Background
At present, with the popularization of new energy vehicles, the number of electric vehicles is increasingly huge, so that a large number of charging stations are continuously built for conveniently charging the vehicles by users of the electric vehicles. Charging pile in present charging station is often all in the state of long-term standby, must increase the energy consumption of charging pile like this. Although some charging piles adopt a solar charging mode to supply power to elements in the charging pile, the energy saving effect of using the mode is still limited. So need provide a scheme in order to improve the energy-conserving effect of filling electric pile.
Disclosure of Invention
The invention aims to provide an energy-saving charging pile and an energy-saving method of the energy-saving charging pile, which are used for achieving the technical effect of improving the energy-saving effect of the charging pile.
In a first aspect, the present invention provides an energy-saving charging pile, including: the pressure generating devices are arranged on the parking spaces; the photoelectric sensor is arranged at the entrance of the parking space; the storage battery is connected with the pressure generating device and the photoelectric sensor; a first wireless communication module connected with the photoelectric sensor; the charging pile is connected with the first wireless communication module; the charging pile comprises a controller; a second wireless communication module connected with the controller; the charging control circuit is connected with the controller; the first relay is connected with the charging control circuit; the charging gun is connected with the first relay; a connection detection device provided on the charging gun; a display connected with the controller; an infrared sensor connected with the controller; a power supply unit connected to the controller; a second relay connected to the power supply unit and the controller, while the first relay is connected to the second relay; the controller is used for starting the display to supply power to the charging control circuit after the photoelectric sensor detects that a vehicle drives into the parking space and the infrared sensor detects that a person approaches the charging pile, and closing the first relay after the connection detection device detects that the charging gun is normally connected with the charging port of the electric vehicle; and meanwhile, the controller is also used for closing the second relay when the charging control circuit is powered off or the charging voltage is reduced.
Further, the power supply unit includes a power supply module; a DC/DC module connected to the power supply module; the DC/DC module is respectively connected with the controller and the second relay.
Furthermore, the pressure generating devices are arranged in parallel along the direction that the vehicle enters and exits the parking space, and the minimum distance is the average value of the distances between the wheels of various vehicles.
Further, the energy-saving charging pile further comprises a photovoltaic power generation device connected with the power supply unit.
Furthermore, the energy-saving charging pile also comprises a lifting pile arranged in the center area of the parking space and an image recognition device arranged at the entrance of the parking space; the lifting pile and the image recognition device are both connected with the controller; the controller is also used for descending the lifting pile when the photoelectric sensor detects that a vehicle enters the parking space and the image recognition device recognizes that the vehicle is an electric vehicle.
Furthermore, the charging pile further comprises an illumination sensor connected with the controller and an illuminating lamp connected with the controller; the illuminating lamp is arranged on the charging pile; the controller is also used for starting the illuminating lamp when the illumination sensor detects that the ambient illumination intensity is lower than a set threshold value.
Further, the charging pile further comprises a gas fire extinguishing system connected with the controller, and a smoke sensor and a temperature sensor connected with the controller; the controller is also used for starting the gas fire extinguishing system when the smoke sensor and the temperature sensor detect that the smoke concentration and the temperature in the charging pile exceed set thresholds.
Further, the charge control circuit includes a contactor; a third relay connected to the contactor; the chargers are connected with the third relay in parallel; the charger is connected with the first relay; and meanwhile, the third relay is connected with the controller.
In a second aspect, the present invention provides an energy saving method for an energy saving charging pile, which is applied to the energy saving charging pile, and includes:
detecting whether a vehicle drives into a parking space or not through a photoelectric sensor, and if so, sending a corresponding detection signal to a controller of the charging pile; meanwhile, the pressure power generation device charges the storage battery in the process that the vehicle enters the parking space;
the controller starts a charging control circuit after receiving the detection signal;
detecting whether a person approaches to the charging pile or not through an infrared sensor; if a person approaches to the charging pile, starting a display to display a charging operation interface, and detecting whether the charging gun is normally connected with a charging port of the electric vehicle through a connection detection device;
if the charging gun is normally connected with the charging port of the electric vehicle, the first relay is closed to start charging the electric vehicle, and the first relay and the charging control circuit are disconnected after charging is completed.
Further, the method further comprises:
detecting whether the charging voltage of a charging control circuit is reduced or a power failure problem occurs in the charging process;
if the charging voltage of the charging control circuit in the charging process is reduced or the power failure problem occurs, the controller closes the second relay and continuously charges the electric vehicle through the power supply unit.
The beneficial effects that the invention can realize are as follows: the energy-saving charging pile provided by the invention starts the display and supplies power to the charging control circuit through the controller when the photoelectric sensor detects that an automobile drives into a parking space, and the controller closes the first relay to start charging the electric vehicle after the connection detection device detects that the charging gun is normally connected with the charging port of the electric vehicle; meanwhile, the storage battery can be charged through the pressure power generation device in the process that the electric automobile enters the parking space, the photoelectric sensor can normally operate through power supply of the storage battery, an external power supply is not needed, and the energy-saving effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a topology structure of an energy-saving charging pile according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an energy saving method of an energy saving charging pile according to an embodiment of the present invention.
Icon: 10-energy-saving charging pile; 100-a pressure power generation device; 200-a photosensor; 300-a storage battery; 400-a first wireless communication module; 500-charging pile; 510-a controller; 511-infrared sensor; 512-light sensor; 520-a second wireless communication module; 530-a charge control circuit; 540 — a first relay; 550-a charging gun; 551-connection detection means; 560-a display; 580-power supply unit; 581-a second relay; 590-lighting lamp; 600-a lifting pile; 700-image recognition means; 800-gas fire suppression systems; 900-photovoltaic power generation device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic view of a topology structure of an energy-saving charging pile according to an embodiment of the present invention.
In an implementation manner, the energy-saving charging pile 10 provided in the embodiment of the present invention includes: a plurality of pressure power generation devices 100 disposed on the parking space; a photosensor 200 disposed at an entrance of a parking space; a battery 300 connected to the pressure generator 100 and the photoelectric sensor 200; a first wireless communication module 400 connected with the photoelectric sensor 200; a charging pile 500 connected to the first wireless communication module 400; the charging pile 500 includes a controller 510; a second wireless communication module 520 connected to the controller 510; a charge control circuit 530 connected to the controller 510; a first relay 540 connected to the charge control circuit 530; a charging gun 550 connected to the first relay 540; a connection detecting device 551 provided on the charging gun 550; a display 560 connected to the controller 510; an infrared sensor 511 connected to the controller 510; a power supply unit 580 connected to the controller 510; a second relay 581 connected with the power supply unit 580 and the controller 510, while the first relay 540 is connected with the second relay 581; the controller 510 is used for starting the display 560 to supply power to the charging control circuit 530 after the photoelectric sensor 200 detects that a vehicle enters the parking space and the infrared sensor 511 detects that a person approaches the charging pile 500, and closing the first relay 540 after the connection detection device 551 detects that the charging gun 550 is normally connected with the charging port of the electric vehicle; meanwhile, the controller 510 is also used to close the second relay 581 when the charging control circuit 530 is powered off or the charging voltage is reduced.
In the implementation process, when the photoelectric sensor 200 detects that the vehicle enters the parking space, the display 560 is started through the controller 510 to supply power to the charging control circuit 530, and when the connection detection device 551 detects that the charging gun 550 is normally connected with the charging port of the electric vehicle, the controller 510 closes the first relay 540 to start charging the electric vehicle; meanwhile, the storage battery 300 can be charged through the pressure power generation device 100 in the process that the electric automobile enters the parking space, the photoelectric sensor 200 can normally operate through power supply of the storage battery 300, an external power supply is not needed, and the energy-saving capacity is improved.
In one embodiment, the power supply unit 580 includes a power supply module; the DC/DC module is connected with the power supply module; the DC/DC modules are connected with the controller 510 and the second relay 581, respectively.
In the implementation process, the voltage output by the power module in the power supply unit 580 may be converted into the voltage required by the controller 510 and the charging voltage of the charging gun 550 through the DC/DC module, which may meet the power supply requirement of the controller 510, or may supplement the charging for the electric vehicle through the power supply unit 580 when the charging voltage of the charging control circuit 530 drops or is powered off.
Further, the energy-saving charging pile 10 further comprises a photovoltaic power generation device 900 connected with the power supply unit 580, the power supply unit 580 can be charged through the photovoltaic power generation device 900, and the energy-saving capability of the charging pile 500 is further improved.
In one embodiment, the pressure generating devices 100 are arranged in parallel along the direction of the vehicle entering and exiting the parking space, and the minimum distance is the average value of the distances between the wheels of various vehicles.
For example, the pressure generator 100 may be configured as an uninterrupted strip along the direction of the vehicle entering and exiting the parking space, or may be configured as a split into multiple segments. The minimum distance between two oppositely arranged pressure generating devices 100 is the average value of the wheel distances of various vehicles.
In one embodiment, the energy-saving charging pile 10 further includes a lifting pile 600 disposed at a central area of the parking space, and an image recognition device 700 disposed at an entrance of the parking space; the lifting pile 600 and the image recognition device 700 are both connected with the controller 510; the controller 510 is further configured to lower the lifting pile 600 when the photoelectric sensor 200 detects that a vehicle enters the parking space and the image recognition device 700 recognizes that the vehicle is an electric vehicle.
In the implementation process, the image recognition device 700 includes a camera and a processor, the camera can acquire a license plate image at the tail of the vehicle, and the processor can recognize the license plate image acquired by the camera through a set built-in program and analyze whether the license plate of the current vehicle is the license plate of the electric vehicle. If the license plate of current vehicle is electric automobile's license plate, then drop lift stake 600, through this kind of mode, can avoid other vehicles to occupy the parking stall of filling electric pile 500 place position to influence electric automobile's user and charge for electric automobile.
In one embodiment, charging post 500 further includes an illumination sensor 512 connected to controller 510, and an illumination lamp 590 connected to controller 510; the illuminating lamp 590 is arranged on the charging pile 500; the controller 510 is also configured to activate the illumination lamp 590 when the illumination sensor 512 detects that the ambient illumination intensity is below a set threshold.
In the implementation process, the illumination sensor 512 and the illumination lamp 590 arranged on the charging pile 500 can provide illumination for the user when the current ambient illumination intensity is too low. In addition, under the condition that current environment illumination intensity is low excessively, can also further consider whether there is the vehicle to get into the parking stall of filling electric pile 500 position, open light 590 again when the vehicle gets into the parking stall of filling electric pile 500 position, close light 590 when the vehicle drives out the parking stall, further reduce the power consumption, reach energy-conserving effect.
In one embodiment, charging pile 500 further includes a gas fire suppression system 800 connected to controller 510, and a smoke sensor and a temperature sensor connected to controller 510; the controller 510 is also used to activate the gas fire suppression system 800 when the smoke sensor and the temperature sensor detect that the smoke concentration and the temperature in the charging pile 500 exceed set thresholds.
Through above-mentioned implementation, gaseous fire extinguishing systems 800 can put out a fire when charging pile 500 inside temperature and smog concentration appear unusually, has improved the security that charges pile 500 and use.
In one embodiment, the charge control circuit 530 includes a contactor; a third relay connected to the contactor; the chargers are connected with the third relay in parallel; the charger is connected with the first relay 540; while the third relay is connected to the controller 510. The controller 510 may control the number of activated chargers according to the charging demand of the vehicle to be charged, so as to meet the charging demand of various types of electric vehicles.
Referring to fig. 2, fig. 2 is a schematic flow chart of an energy saving method of an energy saving charging pile according to an embodiment of the present invention.
In an implementation manner, an embodiment of the present invention further provides an energy saving method for an energy saving charging pile, where the method specifically includes the following steps:
s1, detecting whether a vehicle drives into a parking space through a photoelectric sensor, and if the vehicle drives into the parking space, sending a corresponding detection signal to a controller of a charging pile; meanwhile, the pressure power generation device charges the storage battery in the process that the vehicle enters the parking space;
s2, the controller starts a charging control circuit after receiving the detection signal;
s3, detecting whether a person approaches to the charging pile or not through an infrared sensor; if a person approaches to the charging pile, starting a display to display a charging operation interface, and detecting whether the charging gun is normally connected with a charging port of the electric vehicle through a connection detection device;
and S4, if the charging gun is normally connected with the charging port of the electric vehicle, closing the first relay to start charging the electric vehicle, and disconnecting the first relay and the charging control circuit after charging is finished.
In the implementation process, when the photoelectric sensor detects that an automobile drives into the parking space, the display is started through the controller to supply power to the charging control circuit, and when the connection detection device detects that the charging gun is normally connected with the charging port of the electric vehicle, the controller closes the first relay to start charging the electric vehicle; meanwhile, the storage battery can be charged through the pressure power generation device in the process that the electric automobile enters the parking space, and the photoelectric sensor can normally operate through power supply of the storage battery without an external power supply.
In one embodiment, the method further comprises: detecting whether the charging voltage of a charging control circuit is reduced or a power failure problem occurs in the charging process; if the charging voltage of the charging control circuit in the charging process is reduced or the power failure problem occurs, the controller closes the second relay and continuously charges the electric vehicle through the power supply unit.
In the implementation process, the power supply unit can also perform supplementary charging on the electric automobile when the charging voltage of the charging control circuit is reduced or the power failure problem occurs, so that the charging stability is improved.
In summary, the embodiments of the present invention provide an energy-saving charging pile and an energy-saving method for an energy-saving charging pile, including a plurality of pressure power generation devices disposed on a parking space; the photoelectric sensor is arranged at the entrance of the parking space; the storage battery is connected with the pressure generating device and the photoelectric sensor; a first wireless communication module connected with the photoelectric sensor; the charging pile is connected with the first wireless communication module; the charging pile comprises a controller; the second wireless communication module is connected with the controller; a charge control circuit connected to the controller; the first relay is connected with the charging control circuit; the charging gun is connected with the first relay; a connection detection device provided on the charging gun; a display connected with the controller; an infrared sensor connected with the controller; a power supply unit connected with the controller; the second relay is connected with the power supply unit and the controller, and meanwhile, the first relay is connected with the second relay; the controller is used for starting the display and supplying power to the charging control circuit after the photoelectric sensor detects that a vehicle drives into the parking space and the infrared sensor detects that a person approaches the charging pile, and closing the first relay after the connection detection device detects that the charging gun is normally connected with the charging port of the electric vehicle; and meanwhile, the controller is also used for closing the second relay when the charging control circuit is powered off or the charging voltage is reduced. Through the mode, the energy consumption is reduced while the electric automobile is charged, and the energy-saving effect of the charging pile is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An energy-saving charging pile is characterized by comprising: the pressure generating devices are arranged on the parking spaces; the photoelectric sensor is arranged at the entrance of the parking space; the storage battery is connected with the pressure generating device and the photoelectric sensor; a first wireless communication module connected with the photoelectric sensor; the charging pile is connected with the first wireless communication module; the charging pile comprises a controller; a second wireless communication module connected with the controller; the charging control circuit is connected with the controller; the first relay is connected with the charging control circuit; the charging gun is connected with the first relay; a connection detection device provided on the charging gun; a display connected with the controller; an infrared sensor connected with the controller; a power supply unit connected to the controller; a second relay connected to the power supply unit and the controller, while the first relay is connected to the second relay; the controller is used for starting the display to supply power to the charging control circuit after the photoelectric sensor detects that a vehicle drives into the parking space and the infrared sensor detects that a person approaches the charging pile, and closing the first relay after the connection detection device detects that the charging gun is normally connected with the charging port of the electric vehicle; and meanwhile, the controller is also used for closing the second relay when the charging control circuit is powered off or the charging voltage is reduced.
2. The energy-saving charging pile according to claim 1, wherein the power supply unit comprises a power supply module; a DC/DC module connected to the power supply module; the DC/DC module is respectively connected with the controller and the second relay.
3. The energy-saving charging pile according to claim 1, wherein the pressure power generation devices are arranged in parallel along the direction of vehicles entering and exiting the parking space, and the minimum distance is the average value of the distances between the wheels of various vehicles.
4. The energy-saving charging pile according to claim 1, further comprising a photovoltaic power generation device connected to the power supply unit.
5. The energy-saving charging pile according to claim 1, further comprising a lifting pile disposed in a central area of the parking space, and an image recognition device disposed at an entrance of the parking space; the lifting pile and the image recognition device are both connected with the controller; the controller is also used for descending the lifting pile when the photoelectric sensor detects that a vehicle enters the parking space and the image recognition device recognizes that the vehicle is an electric vehicle.
6. The energy-saving charging pile according to claim 1, further comprising an illumination sensor connected to the controller, and an illumination lamp connected to the controller; the illuminating lamp is arranged on the charging pile; the controller is also used for starting the illuminating lamp when the illumination sensor detects that the ambient illumination intensity is lower than a set threshold value.
7. The energy saving charging pile of claim 1, further comprising a gas fire extinguishing system connected to the controller, and a smoke sensor and a temperature sensor connected to the controller; the controller is also used for starting the gas fire extinguishing system when the smoke sensor and the temperature sensor detect that the smoke concentration and the temperature in the charging pile exceed set thresholds.
8. The energy-saving charging pile according to claim 1, wherein the charging control circuit comprises a contactor; a third relay connected to the contactor; the chargers are connected with the third relay in parallel; the charger is connected with the first relay; and meanwhile, the third relay is connected with the controller.
9. An energy-saving method of an energy-saving charging pile, which is applied to the energy-saving charging pile of any one of claims 1 to 8, is characterized by comprising the following steps:
detecting whether a vehicle drives into a parking space or not through a photoelectric sensor, and if so, sending a corresponding detection signal to a controller of the charging pile; meanwhile, the pressure power generation device charges the storage battery in the process that the vehicle enters the parking space;
the controller starts a charging control circuit after receiving the detection signal;
detecting whether a person approaches to the charging pile or not through an infrared sensor; if a person approaches to the charging pile, starting a display to display a charging operation interface, and detecting whether the charging gun is normally connected with a charging port of the electric vehicle through a connection detection device;
if the charging gun is normally connected with the charging port of the electric vehicle, the first relay is closed to start charging the electric vehicle, and the first relay and the charging control circuit are disconnected after charging is completed.
10. The method of claim 9, further comprising:
detecting whether the charging voltage of a charging control circuit is reduced or a power failure problem occurs in the charging process;
if the charging voltage of the charging control circuit in the charging process is reduced or the power failure problem occurs, the controller closes the second relay and continuously charges the electric vehicle through the power supply unit.
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