Low-damage charging method suitable for European standard charging pile in extreme environment

Abstract

The invention discloses a low-damage charging method suitable for a European standard charging pile in an extreme environment, and relates to the technical field of charging piles, and the method comprises the steps: detecting the type of the extreme environment of a current working environment through an external detection instrument of the European standard charging pile; based on the extreme environment type of the current working environment of the European standard charging pile, the European standard charging pile enters a preparation and pretreatment stage; the European standard charging pile carries out handshake matching and charging initialization processing, and the European standard charging pile and the vehicle carry out data communication through a power line carrier; the European standard charging pile enters a pre-charging stage, and the battery voltage is gradually increased until the preset European standard charging pile output voltage is reached; the European standard charging pile adjusts the output voltage and current according to the request of the vehicle, monitors the working environment data of the battery and the cable in real time, and adjusts the working data of the European standard charging pile based on the change of the working environment data. Through data communication between the European standard charging pile and the vehicle, the working data of the European standard charging pile is adjusted in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a low-damage charging method suitable for European standard charging piles in extreme environments. Background Art

[0002] With the global energy transformation and the continuous improvement of environmental awareness, electric vehicles are gradually becoming the mainstream of future transportation. As an important supporting infrastructure for electric vehicles, the performance and standards of charging piles directly affect the popularity and user experience of electric vehicles. As an efficient charging solution widely used internationally, European standard DC charging piles are leading the new trend of electric vehicle charging. European standard DC charging piles use the communication protocol of the European standard electric vehicle joint charging system standard to communicate with electric vehicles in real time and exchange charging parameters and status information. The charging pile obtains the voltage, current, temperature and other information of the electric vehicle battery through the communication protocol, dynamically adjusts the charging parameters, and ensures the safety and efficiency of the charging process.

[0003] To provide a low-damage charging process for European standard charging piles in extreme environments, it is necessary to fully consider the impact of environmental factors on charging piles and electric vehicles, and take corresponding preventive measures and countermeasures. By strictly following the steps of pre-charging preparation, charging process control and post-charging treatment, the charging process can be ensured to be safe, efficient and low-damage. At the same time, it is also necessary to keep an eye on the technological development of charging piles and electric vehicles, and update and upgrade related equipment and technologies in a timely manner to adapt to the ever-changing charging needs and environmental conditions. Summary of the invention

[0004] In order to solve the above technical problems, a low-damage charging method suitable for extreme environments of European standard charging piles is provided. This technical solution solves the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: A low-damage charging method suitable for European standard charging piles in extreme environments, comprising: Use the European standard charging pile external detection instrument to detect the extreme environment type of the current working environment, which includes high temperature environment, low temperature environment, humid environment and salt spray environment; Based on the extreme environment type in which the European standard charging pile currently works, the European standard charging pile enters the preparation and pretreatment stage; The European standard charging pile performs handshake matching and charging initialization processing, and the European standard charging pile and the vehicle communicate data via power line carrier; The European standard charging pile enters the pre-charging stage, gradually increasing the battery voltage until it reaches the preset European standard charging pile output voltage; The European standard charging pile adjusts the output voltage and current according to the vehicle's request, monitors the working environment data of the battery and cable in real time, and adjusts the working data of the European standard charging pile based on changes in the working environment data; Determine whether the remaining battery power percentage of the vehicle reaches 100%. If so, the vehicle sends a request to the European standard charging pile to stop charging, and charging ends. If not, no output is made.

[0006] Preferably, the detecting the extreme environment type of the current working environment by using an external detection instrument of a European standard charging pile specifically includes: Measure the current working environment temperature data through the European standard charging pile external temperature measuring instrument; Measure the current working environment humidity data through the European standard charging pile external humidity measuring instrument; Use the European standard charging pile external salt spray concentration monitor to measure the salt concentration data in the current working environment air; Determine whether the current working environment temperature data is higher than the first preset temperature data, if so, output that the extreme environment type of the current working environment is a high temperature environment, if not, no output; Determine whether the current working environment temperature data is lower than the second preset temperature data, if so, output that the extreme environment type of the current working environment is a low temperature environment, if not, no output; Determine whether the humidity data of the current working environment is higher than the preset humidity data. If so, output that the extreme environment type of the current working environment is a humid environment. If not, no output is made. Determine whether the salt concentration data in the air of the current working environment is higher than the preset concentration data. If so, output that the extreme environment type of the current working environment is a salt spray environment. If not, no output is made.

[0007] Preferably, based on the extreme environment type of the current working environment of the European standard charging pile, the European standard charging pile enters the preparation and preprocessing stage specifically including: Measure the temperature around the battery using the temperature measuring instrument inside the European standard charging pile; In high temperature environments, the European standard charging pile turns on the fan equipment to pre-cool the battery; In a low-temperature environment, place the resistor assembly next to the battery, use current to heat the resistor to generate heat, preheat the battery, and close the thermal cover to reduce heat loss from the battery; Determine whether the battery ambient temperature data is within a preset battery temperature threshold range. If so, end the pre-processing stage; if not, continue to perform pre-cooling or pre-heating processing on the battery; In a humid environment, the European standard charging pile starts the fan equipment to ensure that the charging area is well ventilated to avoid the accumulation of humid air and corrosion of the equipment; Preset the test voltage and test time, and use the insulation resistance tester to test the insulation resistance of the vehicle; Determine whether the insulation resistance of the vehicle is lower than the preset resistance threshold. If so, the European standard charging pile outputs an error signal and terminates the charging operation. If not, no output is made; In a salt spray environment, a resin base material and a corrosion inhibitor are mixed with an organic solvent as an anti-corrosion coating, and the coating is evenly applied on the surface of a European standard charging pile. Regularly use anhydrous ethanol as a cleaning agent to clean the charging piles and charging ports of electric vehicles to remove salt spray deposits on their surfaces.

[0008] Preferably, the European standard charging pile performs handshake matching and charging initialization processing, and the European standard charging pile and the vehicle perform data communication via a power line carrier, specifically including: The initial value of the charging gun control guide voltage is preset as the initial voltage; Establish power line carrier communication between European standard charging piles and electric vehicles; The electric vehicle sends an initial request to the European standard charging pile, wherein the initial request includes the charging requirements of the electric vehicle, vehicle identification information, and supported charging protocol version information; After receiving the request from the electric vehicle, the European standard charging pile sends a response message to confirm the charging protocol version and the selected charging power parameters; The European standard charging pile sends the digital certificate to the electric car, and the electric car verifies the identity of the European standard charging pile through the digital certificate; Determine whether the digital certificate verification is correct. If so, perform parameter negotiation. If not, the European standard charging pile outputs an error signal and terminates the charging operation. The parameter negotiation includes determining the charging current, voltage, and charging mode parameters. The charging gun controls the pilot voltage to be adjusted to the charging voltage, which is used to indicate that the charging gun is connected but is not yet ready for the charging procedure.

[0009] Preferably, the European standard charging pile enters the pre-charging stage, and gradually increases the battery voltage until the preset European standard charging pile output voltage is reached, specifically including: Preset pre-charge current and output voltage far lower than the current level during normal charging; The charging gun controls the pilot voltage to be adjusted to the charging voltage, which is used to indicate that the charging gun has entered the charging state; The pre-charging phase begins, and the European standard charging pile sends a preset pre-charging current to the electric vehicle battery; Gradually increase the battery voltage, and the voltage of each cell in the battery tends to be balanced until it reaches the preset European standard charging pile output voltage; During the pre-charging process, the battery manager system of the European standard charging pile monitors the changes in battery voltage data in real time; Determine whether the battery voltage data reaches the preset European standard charging pile output voltage. If so, the pre-charging stage ends and enters the formal charging stage. If not, no output is made.

[0010] Preferably, the European standard charging pile adjusts the output voltage and current according to the request of the vehicle, monitors the working environment data of the battery and the cable in real time, and adjusts the working data of the European standard charging pile based on the change of the working environment data. Specifically includes: European standard charging piles adjust output voltage and current according to the vehicle's request; European standard charging piles monitor the temperature, voltage and current parameters of the battery through relevant detectors; Based on the temperature, voltage and current parameters of the battery, determine whether an abnormal situation occurs. If so, the European standard charging pile outputs an error signal and terminates the charging operation. If not, no output is made. The abnormal situation includes over-temperature, over-voltage and over-current. European standard charging piles monitor the temperature data of the cable working environment through relevant detectors; Determine whether the temperature data of the cable working environment is higher than the first preset cable temperature threshold. If so, the European standard charging column reduces the charging power. If not, no output is made. Determine whether the temperature data of the cable working environment is lower than the second preset cable temperature threshold. If so, the European standard charging column reduces the charging current. If not, no output is made.

[0011] Preferably, the determining whether the percentage of remaining battery power of the vehicle reaches 100% specifically includes: Preset a power threshold below 100%; Real-time judgment of whether the remaining battery power percentage of the vehicle reaches the power threshold. If so, the European standard charging pile adjusts the charging mode to trickle charging mode to reduce the charging power. If not, no output is made; Real-time judgment of whether the remaining battery power percentage of the vehicle reaches 100%. If so, the vehicle sends a request to the European standard charging pile to stop charging and enter the power-off stage. If not, no output is made; During the power-off stage, the European standard charging pile stops current output and disconnects the relay. The charging gun controls the guide voltage to be adjusted to the initial voltage, and charging ends.

[0012] Compared with the prior art, the present invention has the following beneficial effects: European standard charging piles can dynamically adjust the output voltage and current according to the real-time status of the battery to ensure the safety and efficiency of the charging process. This intelligent charging strategy helps to avoid problems such as battery overcharging and undercharging. European standard charging piles have built-in multiple safety protection mechanisms, such as overcurrent protection, overvoltage protection, short circuit protection, etc., which can automatically stop charging when an abnormal situation is detected, ensuring the safety and reliability of the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a flow chart of the low-damage charging method for extreme environments of European standard charging piles according to the present invention; Figure 2 This is a flow chart of the extreme environment type detection method of the present invention; Figure 3 It is a flow chart of the preparation and pre-processing stage of the present invention; Figure 4 This is a flow chart of the method for handshake matching and charging initialization processing of the European standard charging pile of the present invention; Figure 5 This is a flow chart of the method for a European standard charging pile to enter a pre-charging stage of the present invention; Figure 6 A flow chart of a method for adjusting working data of a European standard charging pile based on changes in working environment data of the present invention; Figure 7 The present invention is a flow chart of a method for determining whether the remaining battery power percentage of a vehicle reaches 100%. DETAILED DESCRIPTION

[0014] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0015] Reference Figure 1 As shown, a low-damage charging method suitable for extreme environments of European standard charging piles includes: Use the European standard charging pile external detection instrument to detect the extreme environment type of the current working environment, which includes high temperature environment, low temperature environment, humid environment and salt spray environment; Based on the extreme environment type in which the European standard charging pile currently works, the European standard charging pile enters the preparation and pretreatment stage; The European standard charging pile performs handshake matching and charging initialization processing, and the European standard charging pile and the vehicle communicate data via power line carrier; The European standard charging pile enters the pre-charging stage, gradually increasing the battery voltage until it reaches the preset European standard charging pile output voltage; The European standard charging pile adjusts the output voltage and current according to the vehicle's request, monitors the working environment data of the battery and cable in real time, and adjusts the working data of the European standard charging pile based on changes in the working environment data; Determine whether the remaining battery power percentage of the vehicle reaches 100%. If so, the vehicle sends a request to the European standard charging pile to stop charging, and charging ends. If not, no output is made.

[0016] Reference Figure 2As shown in the figure, the extreme environment types of the current working environment detected by the external detection instrument of the European standard charging pile include: Measure the current working environment temperature data through the European standard charging pile external temperature measuring instrument; Measure the current working environment humidity data through the European standard charging pile external humidity measuring instrument; Use the European standard charging pile external salt spray concentration monitor to measure the salt concentration data in the current working environment air; Determine whether the current working environment temperature data is higher than the first preset temperature data, if so, output that the extreme environment type of the current working environment is a high temperature environment, if not, no output; Determine whether the current working environment temperature data is lower than the second preset temperature data, if so, output that the extreme environment type of the current working environment is a low temperature environment, if not, no output; Determine whether the humidity data of the current working environment is higher than the preset humidity data. If so, output that the extreme environment type of the current working environment is a humid environment. If not, no output is made. Determine whether the salt concentration data in the air of the current working environment is higher than the preset concentration data. If so, output that the extreme environment type of the current working environment is a salt spray environment. If not, no output is made.

[0017] Corrosion is the destruction or deterioration of materials or their properties caused by the influence of the environment. Most corrosion occurs in the atmospheric environment. The atmosphere contains corrosive components and factors such as oxygen, humidity, temperature changes and pollutants. Salt spray corrosion is a common and most destructive atmospheric corrosion. Salt spray corrosion on the surface of metal materials is caused by the chloride ions contained in salt spray penetrating the oxide layer and protective layer on the metal surface and reacting electrochemically with the internal metal.

[0018] Reference Figure 3 As shown, based on the extreme environment type of the current working environment of the European standard charging pile, the European standard charging pile enters the preparation and pretreatment stage, which specifically includes: Measure the temperature around the battery using the temperature measuring instrument inside the European standard charging pile; In high temperature environments, the European standard charging pile turns on the fan equipment to pre-cool the battery; In a low-temperature environment, place the resistor assembly next to the battery, use current to heat the resistor to generate heat, preheat the battery, and close the thermal cover to reduce heat loss from the battery; Determine whether the battery ambient temperature data is within a preset battery temperature threshold range. If so, end the pre-processing stage; if not, continue to perform pre-cooling or pre-heating processing on the battery; In a humid environment, the European standard charging pile starts the fan equipment to ensure that the charging area is well ventilated to avoid the accumulation of humid air and corrosion of the equipment; Preset the test voltage and test time, and use the insulation resistance tester to test the insulation resistance of the vehicle; Determine whether the insulation resistance of the vehicle is lower than the preset resistance threshold. If so, the European standard charging pile outputs an error signal and terminates the charging operation. If not, no output is made; In a salt spray environment, a resin base material and a corrosion inhibitor are mixed with an organic solvent as an anti-corrosion coating, and the coating is evenly applied on the surface of a European standard charging pile. Regularly use anhydrous ethanol as a cleaning agent to clean the charging piles and charging ports of electric vehicles to remove salt spray deposits on their surfaces.

[0019] Resin base material is the main film-forming substance of anti-corrosion coatings, which determines the basic properties of coatings, such as adhesion, hardness, weather resistance, etc. Common resin base materials include epoxy resin, polyurethane resin, fluorocarbon resin, etc. They have excellent corrosion resistance and weather resistance. Corrosion inhibitor is a chemical substance that can slow down the corrosion rate of metals. In anti-corrosion coatings, corrosion inhibitors can be adsorbed on the metal surface to form a protective film, thereby preventing direct contact between corrosive media and metals. Common corrosion inhibitors include molybdates, chromates, phosphates, etc.

[0020] Reference Figure 4 As shown, the European standard charging pile performs handshake matching and charging initialization processing. The European standard charging pile and the vehicle perform data communication through the power line carrier, which specifically includes: The initial value of the charging gun control guide voltage is preset as the initial voltage; Establish power line carrier communication between European standard charging piles and electric vehicles; The electric vehicle sends an initial request to the European standard charging pile, wherein the initial request includes the charging requirements of the electric vehicle, vehicle identification information, and supported charging protocol version information; After receiving the request from the electric vehicle, the European standard charging pile sends a response message to confirm the charging protocol version and the selected charging power parameters; The European standard charging pile sends the digital certificate to the electric car, and the electric car verifies the identity of the European standard charging pile through the digital certificate; Determine whether the digital certificate verification is correct. If so, perform parameter negotiation. If not, the European standard charging pile outputs an error signal and terminates the charging operation. The parameter negotiation includes determining the charging current, voltage, and charging mode parameters. The charging gun controls the pilot voltage to be adjusted to the charging voltage, which is used to indicate that the charging gun is connected but is not yet ready for the charging procedure.

[0021] Power line carrier communication technology refers to a communication method that uses power lines to transmit data and media signals. This technology loads the high frequency carrying information onto the current and then uses the wire to transmit the adapter that receives the information. The adapter then separates the high frequency from the current and transmits it to a computer or phone to achieve information transmission.

[0022] Reference Figure 5 As shown, the European standard charging pile enters the pre-charging stage, gradually increasing the battery voltage until it reaches the preset European standard charging pile output voltage. Specifically, it includes: Preset pre-charge current and output voltage far lower than the current level during normal charging; The charging gun controls the pilot voltage to be adjusted to the charging voltage, which is used to indicate that the charging gun has entered the charging state; The pre-charging phase begins, and the European standard charging pile sends a preset pre-charging current to the electric vehicle battery; Gradually increase the battery voltage, and the voltage of each cell in the battery tends to be balanced until it reaches the preset European standard charging pile output voltage; During the pre-charging process, the battery manager system of the European standard charging pile monitors the changes in battery voltage data in real time; Determine whether the battery voltage data reaches the preset European standard charging pile output voltage. If so, the pre-charging stage ends and enters the formal charging stage. If not, no output is made.

[0023] The purpose of pre-charging is to gradually increase the battery voltage so that the voltage of each cell inside the battery tends to be balanced, while reducing the impact and damage that may be caused by direct charging with large current.

[0024] Reference Figure 6 As shown, the European standard charging pile adjusts the output voltage and current according to the vehicle's request, monitors the working environment data of the battery and cable in real time, and adjusts the working data of the European standard charging pile based on the changes in the working environment data. Specifically, it includes: European standard charging piles adjust output voltage and current according to the vehicle's request; European standard charging piles monitor the temperature, voltage and current parameters of the battery through relevant detectors; Based on the temperature, voltage and current parameters of the battery, determine whether an abnormal situation occurs. If so, the European standard charging pile outputs an error signal and terminates the charging operation. If not, no output is made. The abnormal situation includes over-temperature, over-voltage and over-current. European standard charging piles monitor the temperature data of the cable working environment through relevant detectors; Determine whether the temperature data of the cable working environment is higher than the first preset cable temperature threshold. If so, the European standard charging column reduces the charging power. If not, no output is made. Determine whether the temperature data of the cable working environment is lower than the second preset cable temperature threshold. If so, the European standard charging column reduces the charging current. If not, no output is made.

[0025] European standard charging piles can dynamically adjust the output voltage and current according to the real-time status of the battery to ensure the safety and efficiency of the charging process. This intelligent charging strategy helps to avoid problems such as overcharging and undercharging of the battery.

[0026] Reference Figure 7 As shown, judging whether the remaining battery power percentage of the vehicle reaches 100% specifically includes: Preset a power threshold below 100%; Real-time judgment of whether the remaining battery power percentage of the vehicle reaches the power threshold. If so, the European standard charging pile adjusts the charging mode to trickle charging mode to reduce the charging power. If not, no output is made; Real-time judgment of whether the remaining battery power percentage of the vehicle reaches 100%. If so, the vehicle sends a request to the European standard charging pile to stop charging and enter the power-off stage. If not, no output is made; During the power-off stage, the European standard charging pile stops current output and disconnects the relay. The charging gun controls the guide voltage to be adjusted to the initial voltage, and charging ends.

[0027] Trickle charging is used to compensate for the capacity loss caused by self-discharge of the battery after it is fully charged. Pulse current charging is generally used to achieve the above purpose. In order to compensate for self-discharge, continuous small current charging is used to keep the battery in a state close to full charge. It is also called maintenance charging. Batteries in DC power supply systems of telecommunications equipment, signal systems, etc. are mostly in a trickle charging state after being fully charged in preparation for discharge.

[0028] Furthermore, the present solution also proposes a computer-readable storage medium on which a computer-readable program is stored. When the computer-readable program is called, it executes the above-mentioned low-damage charging method in extreme environments applicable to European standard charging piles.

[0029] It is understandable that the storage medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; an optical medium, such as a DVD; or a semiconductor medium, such as a solid state drive (SSD).

[0030] To sum up, the advantages of the present invention are: the European standard charging pile can dynamically adjust the output voltage and current according to the real-time status of the battery to ensure the safety and efficiency of the charging process. This intelligent charging strategy helps to avoid problems such as battery overcharging and undercharging. The European standard charging pile has built-in multiple safety protection mechanisms, such as overcurrent protection, overvoltage protection, short circuit protection, etc., which can automatically stop charging when an abnormal situation is detected to ensure the safety and reliability of the charging process.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A low-damage charging method suitable for European standard charging piles in extreme environments, characterized in that: include: Use the European standard charging pile external detection instrument to detect the extreme environment type of the current working environment, which includes high temperature environment, low temperature environment, humid environment and salt spray environment; Based on the extreme environment type in which the European standard charging pile currently works, the European standard charging pile enters the preparation and pretreatment stage; The European standard charging pile performs handshake matching and charging initialization processing, and the European standard charging pile and the vehicle communicate data via power line carrier; The European standard charging pile enters the pre-charging stage, gradually increasing the battery voltage until it reaches the preset European standard charging pile output voltage; The European standard charging pile adjusts the output voltage and current according to the vehicle's request, monitors the working environment data of the battery and cable in real time, and adjusts the working data of the European standard charging pile based on changes in the working environment data; Determine whether the remaining battery power percentage of the vehicle reaches 100%. If so, the vehicle sends a request to the European standard charging pile to stop charging, and charging ends. If not, no output is made.

2. According to claim 1, a low-damage charging method suitable for European standard charging piles in extreme environments is characterized in that: The extreme environment types of the current working environment detected by the external detection instrument of the European standard charging pile specifically include: Measure the current working environment temperature data through the European standard charging pile external temperature measuring instrument; Measure the current working environment humidity data through the European standard charging pile external humidity measuring instrument; Use the European standard charging pile external salt spray concentration monitor to measure the salt concentration data in the current working environment air; Determine whether the current working environment temperature data is higher than the first preset temperature data, if so, output that the extreme environment type of the current working environment is a high temperature environment, if not, no output; Determine whether the current working environment temperature data is lower than the second preset temperature data, if so, output that the extreme environment type of the current working environment is a low temperature environment, if not, no output; Determine whether the humidity data of the current working environment is higher than the preset humidity data. If so, output that the extreme environment type of the current working environment is a humid environment. If not, no output is made. Determine whether the salt concentration data in the air of the current working environment is higher than the preset concentration data. If so, output that the extreme environment type of the current working environment is a salt spray environment. If not, no output is made.

3. A low-damage charging method suitable for European standard charging piles in extreme environments according to claim 2, characterized in that: Based on the extreme environment type of the current working environment of the European standard charging pile, the European standard charging pile enters the preparation and preprocessing stage specifically including: Measure the temperature around the battery using the temperature measuring instrument inside the European standard charging pile; In high temperature environments, the European standard charging pile turns on the fan equipment to pre-cool the battery; In a low-temperature environment, place the resistor assembly next to the battery, use current to heat the resistor to generate heat, preheat the battery, and close the thermal cover to reduce heat loss from the battery; Determine whether the battery ambient temperature data is within a preset battery temperature threshold range. If so, end the pre-processing stage; if not, continue to perform pre-cooling or pre-heating processing on the battery; In a humid environment, the European standard charging pile starts the fan equipment to ensure that the charging area is well ventilated to avoid the accumulation of humid air and corrosion of the equipment; Preset the test voltage and test time, and use the insulation resistance tester to test the insulation resistance of the vehicle; Determine whether the insulation resistance of the vehicle is lower than the preset resistance threshold. If so, the European standard charging pile outputs an error signal and terminates the charging operation. If not, no output is made; In a salt spray environment, a resin base material and a corrosion inhibitor are mixed with an organic solvent as an anti-corrosion coating, and the coating is evenly applied on the surface of a European standard charging pile. Regularly use anhydrous ethanol as a cleaning agent to clean the charging piles and charging ports of electric vehicles to remove salt spray deposits on their surfaces.

4. A low-damage charging method suitable for European standard charging piles in extreme environments according to claim 3, characterized in that: The European standard charging pile performs handshake matching and charging initialization processing, and the European standard charging pile and the vehicle perform data communication via the power line carrier, specifically including: The initial value of the charging gun control guide voltage is preset as the initial voltage; Establish power line carrier communication between European standard charging piles and electric vehicles; The electric vehicle sends an initial request to the European standard charging pile, wherein the initial request includes the charging requirements of the electric vehicle, vehicle identification information, and supported charging protocol version information; After receiving the request from the electric vehicle, the European standard charging pile sends a response message to confirm the charging protocol version and the selected charging power parameters; The European standard charging pile sends the digital certificate to the electric car, and the electric car verifies the identity of the European standard charging pile through the digital certificate; Determine whether the digital certificate verification is correct. If so, perform parameter negotiation. If not, the European standard charging pile outputs an error signal and terminates the charging operation. The parameter negotiation includes determining the charging current, voltage, and charging mode parameters. The charging gun controls the pilot voltage to be adjusted to the charging voltage, which is used to indicate that the charging gun is connected but is not yet ready for the charging procedure.

5. A low-damage charging method suitable for European standard charging piles in extreme environments according to claim 4, characterized in that: The European standard charging pile enters the pre-charging stage, and gradually increases the battery voltage until it reaches the preset European standard charging pile output voltage, specifically including: Preset pre-charge current and output voltage far lower than the current level during normal charging; The charging gun controls the pilot voltage to be adjusted to the charging voltage, which is used to indicate that the charging gun has entered the charging state; The pre-charging phase begins, and the European standard charging pile sends a preset pre-charging current to the electric vehicle battery; Gradually increase the battery voltage, and the voltage of each cell in the battery tends to be balanced until it reaches the preset European standard charging pile output voltage; During the pre-charging process, the battery manager system of the European standard charging pile monitors the changes in battery voltage data in real time; Determine whether the battery voltage data reaches the preset European standard charging pile output voltage. If so, the pre-charging stage ends and enters the formal charging stage. If not, no output is made.

6. A low-damage charging method suitable for European standard charging piles in extreme environments according to claim 5, characterized in that: The European standard charging pile adjusts the output voltage and current according to the request of the vehicle, monitors the working environment data of the battery and the cable in real time, and adjusts the working data of the European standard charging pile based on the change of the working environment data. Specifically includes: European standard charging piles adjust output voltage and current according to the vehicle's request; European standard charging piles monitor the temperature, voltage and current parameters of the battery through relevant detectors; Based on the temperature, voltage and current parameters of the battery, determine whether an abnormal situation occurs. If so, the European standard charging pile outputs an error signal and terminates the charging operation. If not, no output is made. The abnormal situation includes over-temperature, over-voltage and over-current. European standard charging piles monitor the temperature data of the cable working environment through relevant detectors; Determine whether the temperature data of the cable working environment is higher than the first preset cable temperature threshold. If so, the European standard charging column reduces the charging power. If not, no output is made. Determine whether the temperature data of the cable working environment is lower than the second preset cable temperature threshold. If so, the European standard charging column reduces the charging current. If not, no output is made.

7. A low-damage charging method suitable for European standard charging piles in extreme environments according to claim 6, characterized in that: The determining whether the remaining battery power percentage of the vehicle reaches 100% specifically includes: Preset a power threshold below 100%; Real-time judgment of whether the remaining battery power percentage of the vehicle reaches the power threshold. If so, the European standard charging pile adjusts the charging mode to trickle charging mode to reduce the charging power. If not, no output is made; Real-time judgment of whether the remaining battery power percentage of the vehicle reaches 100%. If so, the vehicle sends a request to the European standard charging pile to stop charging and enter the power-off stage. If not, no output is made; During the power-off stage, the European standard charging pile stops current output and disconnects the relay. The charging gun controls the guide voltage to be adjusted to the initial voltage, and charging ends.

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