Automobile charging pile system integrating photovoltaic power generation and intelligent management

Abstract

The invention discloses an automobile charging pile system integrating photovoltaic power generation and intelligent management, and relates to the field of photovoltaic power generation and automobile charging pile integration, and the system comprises a photovoltaic installation module, an electric pile overall module, a user charging module and a safety protection module. The photovoltaic mounting module is used for acquiring the optimal angle for mounting the photovoltaic power generation panel, and mounting the photovoltaic power generation panel according to the optimal angle of the photovoltaic power generation panel; the charging pile overall module is used for forming an overall automobile charging pile based on a photovoltaic power generation panel, a junction box, a direct current circuit breaker, a core converter, a storage battery and the charging pile; the user charging module is used for a user to use the charging pile by scanning a two-dimensional code on the charging pile through an APP or an applet; the safety protection module comprises an automobile charging protection unit, a circuit protection unit and a user protection unit, and is used for solving the problems that the energy consumption is increased, the environment is polluted and the like due to the fact that existing electric automobile charging pile power supply technologies mostly depend on power grid power supply.

Description

Technical Field

[0001] The present invention relates to the field of integration of photovoltaic power generation and automobile charging piles, and in particular to an automobile charging pile system integrating photovoltaic power generation and intelligent management. Background Art

[0002] As the country attaches importance to the concept of ecological environmental protection, new energy technology has developed rapidly. The rapid development of new energy technology is of great significance to achieving sustainable development of the global economy and society, protecting the ecological environment, and reducing dependence on fossil fuels.

[0003] New energy technologies include new energy power generation and new energy vehicles. New energy vehicles are gradually becoming the development trend of the automotive industry with their excellent economic benefits, environmental protection effects and energy efficiency. With the development and popularization of new energy vehicles, the demand for electric vehicle charging piles is growing. The existing electric vehicle charging pile power supply technology mostly relies on power grid power supply, which leads to problems such as increased energy consumption and environmental pollution. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the prior art to a certain extent. By providing a car charging pile composed of a photovoltaic panel, a junction box, a DC circuit breaker, a core inverter, a battery and a charging pile, the present invention aims to solve the problems that the existing electric vehicle charging pile power supply technology mostly relies on power supply from the power grid, resulting in increased energy consumption and environmental pollution.

[0005] To achieve the above-mentioned purpose, the present application provides a car charging pile system integrating photovoltaic power generation and intelligent management, including: a photovoltaic installation module, an electric pile overall module, a user charging module and a safety protection module;

[0006] The photovoltaic installation module is used to obtain the best angle for installing the photovoltaic panels, and install the photovoltaic panels according to the best angle of the photovoltaic panels;

[0007] The electric pile integral module is used for an automobile charging pile which is composed of a photovoltaic power generation panel, a junction box, a DC circuit breaker, a core converter, a battery and a charging pile;

[0008] The user charging module is used for users to use the charging pile by scanning the QR code on the charging pile through the APP or mini program;

[0009] The safety protection module includes a car charging protection unit, a circuit protection unit and a user protection unit. The car charging protection unit is used to connect the charging pile with the car's BMS, and perform charging protection on the car based on the charging pile and the car's BMS; the circuit protection unit is used to determine whether the line current and line voltage exceed the current threshold and voltage threshold respectively, and if the current threshold or the voltage threshold is exceeded, the DC circuit breaker is disconnected; the user protection unit is used to obtain real-time weather warning information, determine whether the real-time weather warning information affects user safety, and if so, disconnect the DC circuit breaker.

[0010] In some embodiments, the photovoltaic installation module is configured with setting α and β strategies, and the setting α and β strategies include: setting the angle between the panel surface of the photovoltaic panel and the ground, marked as the tilt angle α;

[0011] The side of the photovoltaic panel that receives the light source is set to face due south at 0°, and the right rotation is the positive direction, and the rotation angle is marked as the rotation angle β.

[0012] In some embodiments, the photovoltaic installation module is configured with an optimal α and β strategy, wherein the optimal α and β strategy comprises: obtaining a maximum value and a minimum value of the installation tilt angle α, marked as αmax and αmin respectively;

[0013] The step size for calculating α is: h1 = (αmax-αmin) / (n1-1); where h1 is the step size of α, and n1 is the number of α;

[0014] Set α to n1 installable angles, namely: αmin, αmin+h1, αmin+2*h1, ..., αmax;

[0015] Get the maximum and minimum values ​​of the installation rotation angle β, marked as βmax and βmin respectively;

[0016] The step size for calculating β is: h2 = (βmax-βmin) / (n2-1); where h2 is the step size of β and n2 is the number of β;

[0017] Set the number of possible installation angles of β to n2, namely: βmin, βmin+h2, βmin+2*h2, ..., βmax;

[0018] Combine all α and all β respectively, and install photovoltaic panels under each combination respectively;

[0019] The power generation of each photovoltaic panel in the first time is counted as A;

[0020] The corresponding tilt angle α and rotation angle β when obtaining the maximum value of A are marked as the installation tilt angle and the installation angle respectively;

[0021] All photovoltaic panels are installed at installation inclination angles and installation angles.

[0022] In some embodiments, the electric pile overall module is configured with an overall planning strategy for a car charging pile, and the overall planning strategy for a car charging pile includes: a photovoltaic power generation panel is connected to a junction box and a DC circuit breaker, the junction box is connected to the ground using a connector, and the DC circuit breaker is connected to a core converter, the core converter includes an inverter and a battery charger, and the core converter is connected to a battery and a charging pile respectively;

[0023] When the photovoltaic panels generate direct current, the DC circuit breaker closes the switch, and the direct current is converted into alternating current through the inverter, and the alternating current supplies power to the charging pile. At the same time, the direct current can be charged to the battery through the battery charger through DC / DC conversion. When the photovoltaic panels generate insufficient direct current, the battery releases direct current, and the direct current released by the battery is converted into alternating current through the inverter, and the alternating current supplies power to the charging pile.

[0024] In some embodiments, the user charging module is configured with a user charging strategy, and the user charging strategy includes: the user uses an APP or a mini program to scan a QR code on the charging pile;

[0025] Verify the user's identity and log in to the APP or mini program;

[0026] The user clicks on the charging instruction, and the system sends the charging pile ID and the charging instruction to the IoT device management server. The IoT device management server sends a power supply signal to the charging pile with the ID, and the charging pile supplies power;

[0027] When charging is completed, the charging pile stops supplying power, and the charging pile sends a charging completion signal to the IoT device management server, which then sends the charging completion information to the APP or mini program.

[0028] In some embodiments, the car charging protection unit is configured with a car charging protection strategy, which includes: communicating the charging pile with the vehicle's BMS, obtaining the charging status of the car battery according to the vehicle's BMS, the charging status of the car battery includes the car battery's power, the car battery's voltage, and the car battery's temperature information. When the charging status is fully charged or the charging status is abnormal, the charging pile stops charging.

[0029] In some embodiments, the circuit protection unit is configured with a protection circuit strategy, the protection circuit strategy comprising: obtaining a line current and a line voltage passing through the core converter through a current sensor and a voltage sensor;

[0030] Determine whether the line current exceeds the current threshold T1 and whether the line voltage exceeds the voltage threshold T2;

[0031] If the line current exceeds the current threshold T1 or the line voltage exceeds the voltage threshold T2, the DC circuit breaker is disconnected.

[0032] In some embodiments, the user protection unit is configured with a user protection strategy, which includes: obtaining real-time weather warning information at the location of the charging pile, wherein the real-time weather warning information is divided into blue warning, yellow warning, orange warning and red warning from light to heavy, and when the yellow warning or above affects user safety, the DC circuit breaker is disconnected.

[0033] Beneficial effects of the present invention: The present invention forms an integrated automobile charging pile through photovoltaic panels, junction boxes, DC circuit breakers, core converters, batteries and charging piles, while increasing automobile charging protection, circuit protection and user protection. The advantage is that most traditional charging piles rely on power grids, and the combination of photovoltaic power generation and charging piles solves the problem of excessive energy consumption of ordinary charging piles.

[0034] The present invention obtains the best angle for installing photovoltaic panels and installs the photovoltaic panels according to the best angle. The advantage is that when photovoltaic panels are installed in different places, the angle of sunlight changes. In order to increase the power generation, the best angle for installing photovoltaic panels must also change. Therefore, photovoltaic panels are installed according to the best angle of local photovoltaic panels, thereby increasing the power generation of photovoltaic panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a functional block diagram of the system of the present invention;

[0036] Figure 2 is a schematic diagram of α and β of the present invention;

[0037] Figure 3 A schematic diagram of the direction of current emitted by the photovoltaic power generation panel of the present invention;

[0038] Figure 4 It is a schematic diagram of the structure of the automobile charging pile of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figure 1As shown, the present application provides a car charging pile system integrating photovoltaic power generation and intelligent management, including: a photovoltaic installation module, an electric pile overall module, a user charging module and a safety protection module;

[0041] The photovoltaic installation module is used to obtain the best angle for installing the photovoltaic panels, and install the photovoltaic panels according to the best angle of the photovoltaic panels;

[0042] The photovoltaic installation module is configured with setting α and β strategies, and the setting α and β strategies include: setting the angle between the panel surface of the photovoltaic panel and the ground, marked as the tilt angle α;

[0043] The side of the photovoltaic panel that receives the light source is set to face due south as 0°, and the right rotation is the positive direction, and the rotation angle is marked as the rotation angle β; if placed in the northern hemisphere, the photovoltaic panel can generally be placed facing south to obtain more solar radiation, so the side of the photovoltaic panel that receives the light source is set to face due south as 0°. By setting α and β, the installation angle of the photovoltaic panel can be better expressed;

[0044] The photovoltaic installation module is configured with an optimal α and β strategy, which includes: obtaining the maximum and minimum values ​​of the installation tilt angle α, marked as αmax and αmin respectively; αmax and αmin are the tilt angles of the photovoltaic panels, and the tilt angles of the photovoltaic panels change between vertical and flat, so αmax and αmin are between 0° and 90°. If there are site restrictions, αmax and αmin cannot exceed 0° and 90°;

[0045] The step length for calculating α is: h1 = (αmax-αmin) / (n1-1); where h1 is the step length of α, and n1 is the number of α; the more n1 is set, the more accurate the installation inclination angle will be, but n1 is affected by the size of the site, and photovoltaic panels with too many angles cannot be installed, so n1 needs to be set according to the size of the site;

[0046] Set α to n1 installable angles, namely: αmin, αmin+h1, αmin+2*h1, ..., αmax;

[0047] Get the maximum and minimum values ​​of the installation rotation angle β, marked as βmax and βmin respectively; Due to the hemispherical location of my country, when βmax and βmin are set to face south, the photovoltaic panels can receive more light intensity, and βmax and βmin are between -90° and 90°. If there are site restrictions, max and βmin cannot exceed -90° to 90°;

[0048] The step size of β calculation is: h2 = (βmax-βmin) / (n2-1); where h2 is the step size of β, and n2 is the number of β; the more n2 is set, the more accurate the installation angle is, but n2 is affected by the size of the site, and photovoltaic panels with too many angles cannot be installed, so n2 needs to be set according to the size of the site;

[0049] Set the number of possible installation angles of β to n2, namely: βmin, βmin+h2, βmin+2*h2, ..., βmax;

[0050] Combine all α and all β respectively, and install photovoltaic panels under each combination respectively;

[0051] The power generation of each photovoltaic panel in the first time is counted as A; the first time here can be set between 1 hour and 12 hours;

[0052] The corresponding tilt angle α and rotation angle β when obtaining the maximum value of A are marked as the installation tilt angle and the installation angle respectively;

[0053] All photovoltaic panels are installed at installation inclination angles and installation angles.

[0054] In practical applications, αmax and αmin are obtained as 0° to 90° respectively. According to site restrictions, 63 smaller photovoltaic panels can be installed, so n1 can be set to 7 and n2 can be set to 9. If the site area is different and the photovoltaic panel area is different, the n1 and n2 settings will change. It is calculated that h1 = 15°, so α is set to 7 installation angles, namely: 0°, 15°, ..., 90°; the slide rule βmax and βmin are 90° and -90° respectively, and h2 = 22.5° is calculated, so β ​​is set to 9 installation angles, namely: -90°, -67.5°, ..., 90°; the power generation A of photovoltaic panels installed with different α and β within one hour is counted and made into a table as follows:

[0055]

[0056] The unit of power generation is W. When observing the table to obtain the maximum value, the corresponding tilt angle α is 30° and the rotation angle β is 0°, which are marked as the installation tilt angle and the installation angle respectively. All photovoltaic panels are installed with α being 30° and the rotation angle β being 0°.

[0057] The charging pile module is used for the automobile charging pile composed of photovoltaic panels, junction boxes, DC circuit breakers, core converters, batteries and charging piles.

[0058] The overall module of the electric pile is configured with an overall planning strategy for the automobile charging pile, which includes: the photovoltaic power generation panel is connected to a junction box and a DC circuit breaker, the junction box is connected to the ground using a connector, the DC circuit breaker is connected to a core converter, the core converter includes an inverter and a battery charger, and the core converter is connected to the battery and the charging pile respectively; the DC circuit breaker is used to disconnect the current, acting as a switch and protection, and the junction box is connected to the ground to release excess electric energy;

[0059] When the photovoltaic panels generate direct current, the DC circuit breaker closes the switch, and the direct current is converted into alternating current through the inverter, and the alternating current supplies power to the charging pile. At the same time, the direct current can be charged to the battery through the battery charger through DC / DC conversion. When the photovoltaic panels generate insufficient direct current, the battery releases direct current, and the direct current released by the battery is converted into alternating current through the inverter, and the alternating current supplies power to the charging pile.

[0060] The user charging module is used for users to use the charging pile by scanning the QR code on the charging pile through the APP or mini program;

[0061] The user charging module is configured with a user charging strategy, which includes: the user uses an APP or a mini program to scan the QR code on the charging pile;

[0062] Verify the user's identity and log in to the APP or mini program;

[0063] When the user clicks the charging instruction, the system sends the charging pile ID and the charging instruction to the IoT device management server. The IoT device management server sends a power supply signal to the charging pile with the ID, and the charging pile supplies power, making it convenient for users to use.

[0064] When charging is completed, the charging pile stops supplying power, and the charging pile sends a charging completion signal to the IoT device management server, which then sends the charging completion information to the APP or mini program.

[0065] In actual applications, user 1 uses an APP or mini program to scan the QR code on the charging pile, verify the user identity and log in to the APP or mini program. The user clicks on the charging instruction, and the system sends the charging instruction with the ID of the charging pile being 10021 to the IoT device management server. The IoT device management server sends a power supply signal to the charging pile with the ID 10021, and the charging pile supplies power.

[0066] The safety protection module includes a car charging protection unit, a circuit protection unit and a user protection unit;

[0067] The car charging protection unit is used to connect the charging pile with the car's BMS, and to provide charging protection for the car based on the charging pile and the car's BMS;

[0068] The car charging protection unit is configured with a strategy for protecting the car charging. The strategy for protecting the car charging includes: communicating the charging pile with the vehicle's BMS, obtaining the charging status of the car battery according to the vehicle's BMS, the charging status of the car battery includes the car battery's power, the car battery's voltage, and the car battery's temperature information. When the charging status is fully charged or the charging status is abnormal, the charging pile stops charging.

[0069] The circuit protection unit is used to determine whether the line current and line voltage exceed the current threshold and voltage threshold respectively, and disconnect the DC circuit breaker if the current threshold or voltage threshold is exceeded;

[0070] The circuit protection unit is configured with a protection circuit strategy, which includes: obtaining a line current and a line voltage passing through the core converter through a current sensor and a voltage sensor;

[0071] Determine whether the line current exceeds the current threshold T1 and whether the line voltage exceeds the voltage threshold T2;

[0072] If the line current exceeds the current threshold T1 or the line voltage exceeds the voltage threshold T2, the DC circuit breaker is disconnected; by detecting excessive current and voltage, the equipment is protected;

[0073] In practical applications, the current threshold T1 and the voltage threshold T2 are determined according to the line and the electrical equipment's bearing capacity. For example, if T1 is set to 1000mA and T2 is set to 200V, the line current is 2000mA and the line voltage is 300V, then the ground wire connected through the junction box will be redundantly led out due to the disconnection of the DC circuit breaker;

[0074] The user protection unit is used to obtain real-time weather warning information, determine whether the real-time weather warning information affects user safety, and disconnect the DC circuit breaker if it affects user safety.

[0075] The user protection unit is equipped with a user protection strategy, which includes: obtaining real-time weather warning information of the location of the charging pile, where the real-time weather warning information is divided into blue warning, yellow warning, orange warning and red warning from light to heavy. When the yellow warning and above affect the user's safety, the DC circuit breaker is disconnected. Prevent the charging pile from leaking electricity in bad weather to protect the safety of users;

[0076] In actual applications, the real-time weather warning here is judged according to the warning level of the actual weather forecast. You can set the danger level yourself to achieve the power outage effect, and you can add emergency lighting systems and emergency call functions.

[0077] Working principle: First, the photovoltaic installation module can obtain the best angle for installing photovoltaic panels, and the photovoltaic panels are installed according to the best angle of the photovoltaic panels. The car charging pile is composed of photovoltaic panels, junction boxes, DC circuit breakers, core inverters, batteries and charging piles. Users use the charging pile by scanning the QR code on the charging pile through the APP or mini program. Finally, the charging pile is connected to the car's BMS through the safety protection module, and the car is charged based on the charging pile and the car's BMS. It is judged whether the line current and line voltage exceed the current threshold and voltage threshold respectively. If the current threshold or voltage threshold is exceeded, the DC circuit breaker is disconnected. Real-time weather warning information is obtained to determine whether the real-time weather warning information affects user safety. If it affects user safety, the DC circuit breaker is disconnected.

[0078] It should be understood by those skilled in the art that the embodiments of the present invention can be provided as methods, systems or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0079] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

Claims

1. A car charging pile system integrating photovoltaic power generation and intelligent management, characterized in that: include: Photovoltaic installation module, electric pile overall module, user charging module and safety protection module; The photovoltaic installation module is used to obtain the best angle for installing the photovoltaic panels, and install the photovoltaic panels according to the best angle of the photovoltaic panels; The electric pile integral module is used for an automobile charging pile which is composed of a photovoltaic power generation panel, a junction box, a DC circuit breaker, a core converter, a battery and a charging pile; The user charging module is used for users to use the charging pile by scanning the QR code on the charging pile through the APP or mini program; The safety protection module includes a car charging protection unit, a circuit protection unit and a user protection unit. The car charging protection unit is used to connect the charging pile with the car's BMS, and perform charging protection on the car based on the charging pile and the car's BMS; the circuit protection unit is used to determine whether the line current and line voltage exceed the current threshold and voltage threshold respectively, and if the current threshold or the voltage threshold is exceeded, the DC circuit breaker is disconnected; the user protection unit is used to obtain real-time weather warning information, determine whether the real-time weather warning information affects user safety, and if so, disconnect the DC circuit breaker.

2. According to claim 1, a car charging pile system integrating photovoltaic power generation and intelligent management is characterized in that: The photovoltaic installation module is configured with setting α and β strategies, and the setting α and β strategies include: setting the angle between the panel surface of the photovoltaic panel and the ground, marked as the tilt angle α; The side of the photovoltaic panel that receives the light source is set to face due south at 0°, and the right rotation is the positive direction, and the rotation angle is marked as the rotation angle β.

3. The automobile charging pile system integrating photovoltaic power generation and intelligent management according to claim 2 is characterized in that: The photovoltaic installation module is configured with an optimal α and β strategy, wherein the optimal α and β strategy comprises: obtaining the maximum and minimum values ​​of the installation tilt angle α, which are marked as αmax and αmin respectively; The step size for calculating α is: h1 = (αmax-αmin) / (n1-1); where h1 is the step size of α, and n1 is the number of α; Set α to n1 installable angles, namely: αmin, αmin+h1, αmin+2*h1, ..., αmax; Get the maximum and minimum values ​​of the installation rotation angle β, marked as βmax and βmin respectively; The step size for calculating β is: h2 = (βmax-βmin) / (n2-1); where h2 is the step size of β and n2 is the number of β; Set the β installation angle to n2, which are: βmin, βmin+h2, βmin+2*h2, ..., βmax; Combine all α and all β respectively, and install photovoltaic panels under each combination respectively; The power generation of each photovoltaic panel in the first time is counted as A; The corresponding tilt angle α and rotation angle β when obtaining the maximum value of A are marked as the installation tilt angle and the installation angle respectively; All photovoltaic panels are installed at installation inclination angles and installation angles.

4. The automobile charging pile system integrating photovoltaic power generation and intelligent management according to claim 3 is characterized in that: The electric pile overall module is configured with an overall planning strategy for automobile charging piles, and the overall planning strategy for automobile charging piles includes: the photovoltaic power generation panel is connected to a junction box and a DC circuit breaker, the junction box is connected to the ground using a connector, the DC circuit breaker is connected to a core converter, the core converter includes an inverter and a battery charger, and the core converter is connected to the battery and the charging pile respectively; When the photovoltaic panels generate direct current, the DC circuit breaker closes the switch, and the direct current is converted into alternating current through the inverter, and the alternating current supplies power to the charging pile. At the same time, the direct current can be charged to the battery through the battery charger through DC / DC conversion. When the photovoltaic panels generate insufficient direct current, the battery releases direct current, and the direct current released by the battery is converted into alternating current through the inverter, and the alternating current supplies power to the charging pile.

5. The automobile charging pile system integrating photovoltaic power generation and intelligent management according to claim 4, characterized in that: The user charging module is configured with a user charging strategy, which includes: the user uses an APP or a mini program to scan the QR code on the charging pile; Verify the user's identity and log in to the APP or mini program; The user clicks on the charging instruction, and the system sends the charging pile ID and the charging instruction to the IoT device management server. The IoT device management server sends a power supply signal to the charging pile with the ID, and the charging pile supplies power; When charging is completed, the charging pile stops supplying power, and the charging pile sends a charging completion signal to the IoT device management server, which then sends the charging completion information to the APP or mini program.

6. The automobile charging pile system integrating photovoltaic power generation and intelligent management according to claim 5, characterized in that: The car charging protection unit is configured with a car charging protection strategy, which includes: communicating the charging pile with the vehicle's BMS, obtaining the charging status of the car battery according to the vehicle's BMS, the charging status of the car battery including the power of the car battery, the voltage of the car battery, and the temperature information of the car battery. When the charging status is fully charged or the charging status is abnormal, the charging pile stops charging.

7. The automobile charging pile system integrating photovoltaic power generation and intelligent management according to claim 6, characterized in that: The circuit protection unit is configured with a protection circuit strategy, the protection circuit strategy comprising: obtaining a line current and a line voltage passing through a core converter through a current sensor and a voltage sensor; Determine whether the line current exceeds the current threshold T1 and whether the line voltage exceeds the voltage threshold T2; If the line current exceeds the current threshold T1 or the line voltage exceeds the voltage threshold T2, the DC circuit breaker is disconnected.

8. The automobile charging pile system integrating photovoltaic power generation and intelligent management according to claim 7, characterized in that: The user protection unit is configured with a user protection strategy, which includes: obtaining real-time weather warning information at the location of the charging pile, wherein the real-time weather warning information is divided into blue warning, yellow warning, orange warning and red warning from light to heavy, and when the yellow warning or above affects the user safety, the DC circuit breaker is disconnected.

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