Electric vehicle charging pile system

Abstract

The invention relates to the technical field of electric vehicle charging, and discloses an electric vehicle charging pile system which comprises a charging pile body, a solar power supply module, an energy storage battery module, a power grid access module, a charging control module and a fire detection module. Wherein the output end of the solar power supply module is respectively connected with the energy storage battery module and a charging interface of the charging pile body through the MPPT controller, and the energy storage battery module is respectively connected with the power grid access module and the charging interface through the charging control module; the fire detection module is used for collecting fire data and transmitting the fire data to the charging control module, so that the charging control module performs fire detection. According to the charging pile system, by accessing solar energy and controlling three-source cooperative power supply, the electric vehicle charging power consumption cost is greatly reduced, the probability of centralized charging of users in rural areas is reduced, and the stability of a power grid is improved. In addition, abnormity in the charging process can be found as early as possible, and safety protection is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, for example, to an electric vehicle charging pile system. Background Art

[0002] With economic development, electric vehicles are gaining widespread adoption due to their environmental, economical, convenient, and healthy advantages, making them an ideal choice for green mobility. Electric vehicles are powered by batteries and therefore consume a significant amount of electrical energy (secondary energy). In response to this trend, environmentally friendly and safe charging equipment is being vigorously developed.

[0003] Currently, electric vehicle charging stations rely on the power grid and cannot utilize clean energy sources such as solar energy. This is particularly true in rural areas, where electricity costs are particularly high. In rural areas, where the grid capacity is relatively small, centralized charging can easily cause a sudden surge in load on the substations, leading to voltage fluctuations, tripping, and other issues that affect grid stability. Furthermore, improper operation or defects in the electric vehicles themselves can easily cause fires and lead to safety accidents. Therefore, there is an urgent need for electric vehicle charging equipment to address these issues.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide an electric vehicle charging pile system to solve the technical problems of high electricity cost, great safety hazards and grid interference in electric vehicle charging.

[0007] In some embodiments, an electric vehicle charging pile system includes: a charging pile body, a solar power supply module, an energy storage battery module, a grid access module, a charging control module, and a fire detection module, wherein:

[0008] The output end of the solar power supply module is connected to the energy storage battery module and the charging interface of the charging pile body through the MPPT controller. The energy storage battery module is connected to the grid access module and the charging interface through the charging control module.

[0009] The fire detection module is used to collect fire data and transmit the fire data to the charging control module so that the charging control module can perform fire detection.

[0010] In some embodiments, the solar power supply module includes a double-sided photovoltaic panel, a self-cleaning coating is provided on the surface of the double-sided photovoltaic panel, and the bracket of the double-sided photovoltaic panel supports automatic adjustment of the tilt angle.

[0011] In some embodiments, the solar power supply module includes a light intensity sensor, the energy storage battery module includes a BMS, and the charging control module includes a relay group and a PLC controller. The PLC controller is configured to:

[0012] Receive the light intensity collected by the light intensity sensor and make a judgment;

[0013] When the light intensity is greater than a first preset value, the MPPT controller controls the solar power supply module to transmit electric energy to the charging interface and then to the energy storage battery module;

[0014] When the light intensity is less than or equal to a first preset value and the state of charge collected by the BMS is greater than or equal to a second preset value, the energy storage battery module is controlled by the relay group to transmit electric energy to the charging port;

[0015] When the state of charge in the energy storage battery module is less than a second preset value, the grid access module is controlled by the relay group to transmit electric energy to the charging interface.

[0016] In some embodiments, the charging control module further includes a load management submodule. When controlling the grid access module to transmit electrical energy to the charging port through the relay group, the PLC controller is further configured to:

[0017] The load management submodule is controlled to adjust the charging power so that the grid access module can transmit electric energy to the charging interface according to the charging power.

[0018] In some embodiments, the energy storage battery module further includes a lithium iron phosphate battery pack. When the relay group controls the grid access module to transmit electrical energy to the charging port, the PLC controller is further configured to:

[0019] The grid access module is controlled according to the preset power to transmit electrical energy to the lithium iron phosphate battery pack.

[0020] In some embodiments, the fire detection module includes an infrared temperature sensor, a photoelectric smoke detector, an arc monitoring submodule, and a linkage disposal submodule, and the charging control module is configured as follows:

[0021] Receive fire data collected by infrared temperature sensors, photoelectric smoke detectors, and arc monitoring submodules;

[0022] The fire data is cross-validated, and only when at least two of the three trigger the threshold value, the power supply is cut off and the early warning is initiated through the linkage disposal submodule.

[0023] In some embodiments, the electric vehicle charging station system further includes: a user interaction module, the user interaction module including a touch screen, and is in communication with the charging control module, and the touch screen is configured to:

[0024] Get and display charging status;

[0025] Receive a control instruction input by a user for indicating a charging mode, and transmit the control instruction to a charging control module so that the charging control module controls charging according to the charging mode.

[0026] In some embodiments, the electric vehicle charging station system further includes a remote monitoring module, which is configured to:

[0027] Cloud data upload is achieved through mobile communication technology, so that users can remotely control charging start and stop and receive early warning information through mobile terminals.

[0028] In some embodiments, the charging pile body is made of fire-retardant material, and a fire-proof isolation fence of a preset height is set around the charging pile body.

[0029] In some embodiments, the energy storage battery module further includes an inverter, and the PLC controller is further configured to:

[0030] When the grid access module is disconnected from the mains power supply, the energy storage battery module is controlled to supply power to the user through the inverter.

[0031] The electric vehicle charging pile system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0032] The solar power supply module, energy storage battery module and grid access module in the electric vehicle charging pile system are three sources of collaborative power supply. The output end of the solar power supply module is respectively connected to the energy storage battery module and the charging interface of the charging pile body through the MPPT controller. The MPPT controller monitors the light intensity in real time, adjusts the current and voltage, and ensures that the solar power supply module always generates electricity with the highest efficiency. The energy storage battery module is respectively connected to the grid access module and the charging interface through the charging control module. The electric vehicle is powered by connecting to the charging interface of the charging pile body. The charging control module can control the three sources of collaborative power supply. As described above, the charging pile system in this application greatly reduces the cost of charging electricity for electric vehicles by connecting to solar power supply, reduces the probability of centralized charging for users in rural areas, and improves the stability of the power grid. In addition, the fire detection module can transmit the collected fire data to the charging control module so that the charging control module can perform fire detection, so that abnormalities in the charging process can be discovered as early as possible to improve safety protection.

[0033] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0035] Figure 1 This is a schematic diagram of a scenario of an electric vehicle charging pile system provided by an embodiment of the present disclosure;

[0036] Figure 2 This is a system block diagram of an electric vehicle charging pile system provided by an embodiment of the present disclosure;

[0037] Figure 3 is a charging control flow chart provided by an embodiment of the present disclosure;

[0038] Figure 4 is a fire detection flow chart provided by an embodiment of the present disclosure;

[0039] Figure 5 2 is a schematic diagram of another electric vehicle charging station system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0041] The terms "first," "second," and the like in the embodiments of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to facilitate the description of the embodiments of the present disclosure herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0042] Unless otherwise stated, the term "plurality" means two or more.

[0043] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0044] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0045] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0046] Currently, electric vehicles are widely used due to their environmental, economical, convenient, and healthy advantages. However, powering electric vehicles consumes a large amount of electricity (secondary energy). In response to this trend, environmentally friendly and safe charging equipment is being vigorously developed. Existing electric vehicle charging stations commonly suffer from the following technical drawbacks: First, traditional charging methods rely on the power grid, resulting in high electricity costs and environmental concerns. This is particularly true in rural areas, where there are a large number of electric bicycles and tricycles. This creates a contradiction between the growing demand for green energy and the insufficient utilization of clean energy, making it impossible to utilize clean energy sources such as solar energy to reduce electricity costs. Second, rural power grids suffer from poor stability, with widespread voltage fluctuations and low power supply reliability. Traditional charging methods can damage equipment or batteries due to voltage instability. Furthermore, rural power grids have limited capacity, making centralized charging prone to sudden increases in load on substations, leading to voltage fluctuations, tripping, and other issues, impacting grid stability. Furthermore, traditional charging methods lack safety protections and active fire warning systems, making it impossible to detect abnormal temperature rises or smoke during charging at an early stage.

[0047] To solve the above problems, the present disclosure provides an electric vehicle charging station system that includes three-source coordinated power supply, multi-dimensional fire detection, user interaction, and remote monitoring.

[0048] The electric vehicle charging pile system provided by the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

[0049] Figure 1 This is a schematic diagram of a scenario of an electric vehicle charging pile system provided by an embodiment of the present disclosure. Figure 1 As shown, taking rural areas as an example, solar panels in solar power modules are installed on the roofs of rural households or in open areas of courtyards. The solar panels can use high-efficiency crystalline silicon double-sided photovoltaic panels. Solar panels (such as 540W photovoltaic panels) use the photovoltaic effect to convert sunlight into electrical energy. A self-cleaning coating is provided on the surface of the double-sided photovoltaic panel to reduce the accumulation of dust and fallen leaves and maintain efficient power generation. The bracket of the double-sided photovoltaic panel supports manual or automatic adjustment of the inclination angle. For example, the inclination angle ranges from 25° to 45°, and the sunlight reception angle is optimized by adjusting the inclination angle. Multiple solar panels can be connected in series or in parallel, and the output voltage matches the specifications of the energy storage battery module (such as 48V).

[0050] In some embodiments, the charging pile body has a size of 800mm×600mm×1500mm and adopts a modular design. The charging pile body is equipped with a power input module, a battery pack installation compartment, a charging control module, a charging interface, and a fire detection module. Among them, the power input module is used to connect the solar panel and the grid access module. The battery pack installation compartment is used to install the lithium iron phosphate battery pack in the energy storage battery module. The charging interface includes a Type-C fast charging interface that supports a wide output range of 20 to 60V. The sensors in the fire detection module can be installed above and around the charging area.

[0051] Figure 2 This is a system block diagram of an electric vehicle charging pile system provided by an embodiment of the present disclosure. Figure 2 As shown, the electric vehicle charging pile system includes: a charging pile body, a solar power supply module, an energy storage battery module, a grid access module, a charging control module, and a fire detection module. The following is a detailed introduction to each module and the collaborative relationship between them.

[0052] In some embodiments, the solar power supply module includes a solar panel, a light intensity sensor and an MPPT (Maximum Power Point Tracking) controller. The MPPT controller can track the sunlight intensity in real time, achieve the maximum power output of solar energy, and directly charge the electric vehicle when there is sufficient light. The energy storage battery module includes a lithium iron phosphate battery pack and a BMS (Battery Management System). The lithium iron phosphate battery pack has a capacity of 5kW / 10kWh or more and is used to store excess electricity generated by solar power to power electric vehicles at night or when there is insufficient light. The BMS has overcharge, over-discharge and short-circuit protection functions, and the cycle life can reach more than 5,000 times. The charging control module includes a relay group, a PLC controller and a load management submodule. The output end of the solar power supply module is respectively connected to the charging interface of the energy storage battery module and the charging pile body through the MPPT controller, and the energy storage battery module is respectively connected to the grid access module and the charging interface through the charging control module.

[0053] In some embodiments, the solar power supply module, energy storage battery module and charging pile body adopt a modular design, and each component is connected through a standardized interface to support quick installation and maintenance.

[0054] Figure 3 This is a charging control flow chart provided by the embodiment of the present disclosure. Figure 3 The charging control process of the charging control module disclosed in the embodiment of the present application is as follows:

[0055] S301: Receive the light intensity collected by the light intensity sensor and make a judgment.

[0056] In some embodiments, solar panels are installed on a roof or yard, and the solar panels are connected to a light intensity sensor. The light intensity sensor is used to measure the intensity or illumination of visible light on the solar panels in real time. Its core function is to convert light signals into measurable electrical signals (voltage, current, resistance or digital value). The light intensity sensor sends the collected light intensity to a PLC controller so that the PLC controller can determine whether the electric vehicle can be charged directly.

[0057] S302: When the light intensity is greater than a first preset value, the MPPT controller controls the solar power supply module to transmit electric energy to the charging port and then to the energy storage battery module.

[0058] In some embodiments, when the PLC controller determines that the light intensity is greater than a first preset value, for example, greater than 200 W / m 2 When the solar panels are powered by a MPPT controller, they can directly charge the electric vehicle. If the lithium iron phosphate battery pack is not fully charged, the solar panels can also be used to charge it. The MPPT controller monitors light intensity in real time and adjusts current and voltage to ensure the solar panels always generate power at peak efficiency. For example, it automatically reduces voltage on cloudy days to avoid energy waste.

[0059] S303: When the light intensity is less than or equal to a first preset value and the state of charge collected by the BMS is greater than or equal to a second preset value, the energy storage battery module is controlled by the relay group to transmit electric energy to the charging interface.

[0060] In some embodiments, the BMS monitors key parameters of the battery such as voltage, current, and temperature in real time to prevent dangerous conditions such as overcharging (automatic stop when full), over-discharging (cut off when the battery is too low), overheating or short circuit (immediate power off), while actively adjusting the power balance between single cells to maximize battery capacity and endurance, and provide accurate state of charge (SOC) and state of health (SOH) assessments to provide key data support for equipment operation control and maintenance decisions. The state of charge collected by the BMS refers to the ratio of the remaining power of the battery to its rated capacity, which represents the remaining power of the battery. For example, when the SOC is 50%, it means that the remaining power of the battery is 50% of its total power.

[0061] In some embodiments, the PLC controller determines that the light intensity is less than or equal to a first preset value, for example, less than or equal to 200W / m 2 When the remaining power is greater than the second preset value, for example, greater than or equal to 20%, that is, when the light intensity is less than or equal to 200W / m 2When the SOC of the lithium iron phosphate battery pack is greater than or equal to 20%, the PLC controller controls the lithium iron phosphate battery pack through the relay group to transmit electric energy to the charging interface to charge the electric vehicle.

[0062] S304: When the state of charge in the energy storage battery module is less than a second preset value, the grid access module is controlled by the relay group to transmit electric energy to the charging interface.

[0063] In some embodiments, when the SOC of the lithium iron phosphate battery pack is less than 20%, that is, when the solar energy and battery power are insufficient, the PLC controller controls the grid access module through the relay group to transmit power to the charging port to charge the electric vehicle.

[0064] For example, the MPPT controller adjusts the solar panel output voltage to 48V, directly charging the electric vehicle (power 3kW) and charging the lithium iron phosphate battery pack (power 2kW) at the same time. 2 On a cloudy day, the system switches to the lithium iron phosphate battery pack. The PLC controller adjusts the output power to 2kW based on the electric vehicle's battery specifications (e.g., 48V / 20Ah). When the lithium iron phosphate battery pack's SOC drops to 15%, the PLC controller connects to the grid power supply, charging the electric vehicle at 1kW and replenishing the lithium iron phosphate battery at 0.5kW.

[0065] In some embodiments, the load management submodule in the PLC controller can control the charging power. When the relay group controls the grid access module to deliver power to the charging port, the load management submodule is controlled to adjust the charging power so that the grid access module delivers power to the charging port based on the charging power. For example, the charging power can be automatically adjusted based on the grid load (from 3kW to 2kW) to avoid tripping.

[0066] In the above, the PLC controller dynamically switches the power supply based on the detection data of the light intensity sensor and the lithium iron phosphate battery pack, with the priority being solar panels > lithium iron phosphate battery pack > grid. The load management module also adjusts the charging power to avoid grid overload.

[0067] In some embodiments, when the grid access module is controlled by the relay group to transmit electric energy to the charging interface, the PLC controller can also control the grid access module to transmit electric energy to the lithium iron phosphate battery pack according to the preset power. Here, the preset power can be set to a low power, such as 1kW, to avoid excessive load on the grid.

[0068] In some embodiments, considering that electricity prices are lower during peak and valley periods, the PLC controller can automatically switch to grid power supply and fully charge the lithium iron phosphate battery pack at 0.3 yuan / kWh from 22:00 at night to 6:00 the next day (peak and valley periods), regardless of the power level of the lithium iron phosphate battery pack, thereby reducing costs by taking advantage of low valley electricity prices.

[0069] As mentioned above, the electric vehicle charging pile system provided in the embodiment of the present application utilizes solar energy to generate about 3kWh of electricity per day, which can meet the charging needs of 2 to 3 electric vehicles and save about 600 yuan in electricity costs per year (calculated at 0.5 yuan / kWh). Combined with the peak-valley electricity price strategy, the charging cost of the energy storage battery pack is further reduced, and the long-term economic benefits are obvious. In addition, the charging control module dynamically adjusts the charging power to avoid grid overload caused by centralized charging, reducing the load fluctuation in rural areas by 30%. The energy storage battery module smoothes the peak and valley loads of the grid and improves the power supply quality of the grid.

[0070] The fire protection process disclosed in the embodiments of this application is introduced below.

[0071] In some embodiments, the fire detection module is used to collect fire data, including an infrared temperature sensor, a photoelectric smoke detector, an arc monitoring submodule, and a linkage disposal submodule. Among them, the accuracy of the infrared temperature sensor is ±0.5°C, and it monitors the temperature of the charging area every second, and is used to monitor the temperature changes during the charging process in real time. The sensitivity of the photoelectric smoke detector is 0.5% to 15% obs / m, which is used to monitor the smoke concentration during the charging process in real time and can capture tiny smoke particles before the flame appears. The arc monitoring submodule is used to monitor abnormal electric sparks during the charging process, such as arc signals generated by short circuits, in real time, to achieve multi-dimensional detection of fire hazards and all-round fire prevention. The fire detection module transmits temperature data, smoke concentration data, and arc signals to the charging control module so that the charging control module can perform fire detection.

[0072] Figure 4 This is a fire detection flow chart provided by the embodiment of the present disclosure. Figure 4 The charging control module's fire detection process is as follows: The charging control module receives fire data collected by the infrared temperature sensor, photoelectric smoke detector, and arc monitoring submodule. The fire data is cross-validated, and only when at least two of the three trigger the threshold value will the linkage disposal submodule cut off the power supply and initiate an early warning. For example, the fire data when the threshold is triggered are: temperature > 60°C (or a rise of 5°C per minute), smoke concentration > 0.15dB / m, and an abnormal arc signal. When any two of the above occur, the linkage disposal submodule will cut off the charging power within 0.1 seconds and initiate an alarm.

[0073] In some embodiments, the electric vehicle charging station system further includes a user interaction module. Figure 1 and Figure 2 The user interaction module includes a touch screen, which can be a 7-inch high-definition touch screen. The touch screen is in communication with the charging control module to enable the exchange of data and instructions. The touch screen can obtain the charging status, such as power, power, time, etc. from the charging control module. It can also obtain energy usage information, such as 70% of the charging comes from solar panels, 20% from lithium iron phosphate battery packs, and 10% from the power grid. It can also obtain cost information, etc., and display the obtained data. The user interaction module can also receive control instructions input by the user to indicate the charging mode, and transmit the control instructions to the charging control module so that the charging control module controls charging according to the charging mode. For example, the user can select the charging mode as normal charging (full charge in 3 hours) or fast charging (full charge in 1 hour) through the touch screen. The touch screen will send the control instructions containing the charging mode to the charging control module so that the charging control module controls charging according to the control instructions. The user can also view historical charging records, such as the power consumption in the past week, through the touch screen.

[0074] In some embodiments, the user interaction module can integrate a voice prompt function and support dialect broadcasting, communicate with the charging control module through the RS485 bus, and update the charging data in real time, thereby improving the operational convenience of middle-aged and elderly users in rural areas.

[0075] Figure 5 This is a schematic diagram of another electric vehicle charging pile system provided by an embodiment of the present disclosure. Figure 5 As shown, the electric vehicle charging pile system also includes a remote monitoring module, which is configured to upload cloud data through mobile communication technology so that users can remotely control charging start and stop and receive warning information through a mobile terminal.

[0076] In some embodiments, the remote monitoring module supports OTA (Over-the-Air Technology) upgrades, and the cloud platform pushes update programs to the charging control module through the MQTT (Message Queue Telemetry Transport) protocol to optimize peak and valley electricity price periods or fire detection thresholds, etc.

[0077] In some embodiments, the charging pile operation data (electricity, power, sensor status, etc.) is uploaded to the cloud management platform in real time through the 4G / 5G communication module. Users can remotely view the status of the charging pile, control charging start and stop, and receive early warning information through the mobile phone APP. It also supports charging pile fault diagnosis and remote maintenance. For example, users can check the charging progress at any time, "Currently charging with solar energy, the remaining power is 80%." Users can remotely start charging before getting off work and use the car when they get home. Users can also receive push notifications on their mobile phones in the event of fire or faults, such as "Abnormal temperature! The power has been cut off."

[0078] In some embodiments, the linkage handling submodule can send warning information to the user's mobile phone via GSM communication, and the user can receive the warning information through the mobile phone app. At the same time, the linkage handling submodule supports linkage with the community fire protection system, automatically sending an alarm message when a fire hazard is detected.

[0079] Combined with the user interaction module and remote monitoring module, the fire warning disclosed in the embodiment of this application can be a three-level warning mechanism. Specifically, the first level warning is a red flashing on the touch screen, the second level warning is a buzzer alarm set on the charging pile body, and the third level warning is a power cut and a push notification to the mobile phone. The entire process takes less than 0.5 seconds. The user can confirm the abnormality and reset it through the touch screen or mobile phone app. If it is not handled within 3 minutes, the linkage disposal submodule automatically sends an alarm information to the community fire protection platform.

[0080] The following example illustrates the fire detection process. For example, the arc monitoring submodule detects an abnormal discharge signal (frequency > 10kHz) and transmits it to the PLC controller via the I2C bus. Simultaneously, the infrared temperature sensor detects a temperature rise to 65°C (exceeding the 60°C threshold) and uploads this data to the PLC controller via the SPI interface. The PLC controller cross-validates the two data streams and determines a fire risk. Within 0.1 seconds, it triggers a three-level warning: a signal is sent to the relay group via the GPIO pin, disconnecting the charging power supply; an 85dB buzzer alarm is activated; and a warning message is pushed to the user's mobile phone app via the 4G module: "Arc abnormality, temperature exceeded! Power has been disconnected." The user can view the fault log on the app and, after confirming the problem, contact maintenance personnel to replace the cable.

[0081] The electric vehicle charging station system in this application combines multi-dimensional monitoring, including temperature, smoke, and arc detection, with a false alarm rate of less than 0.1%, improving fire warning accuracy by 90% compared to traditional single-temperature monitoring. A 0.1-second power outage response time effectively curbs the spread of fires, reducing the risk of charging fires by over 90%. Remote monitoring and a mobile app enable real-time viewing and convenient control of charging status, enhancing the user experience.

[0082] Combine Figure 1 The outer shell of the charging pile body is made of fire-retardant material, and a fire isolation fence of a preset height is set around the charging pile body, such as a detachable fire isolation fence with a height of 1.2 meters. The fire isolation fence can be made of galvanized steel plate with a thickness greater than 2 mm, and its surface can be coated with high-temperature resistant paint to achieve physical isolation from the spread of fire.

[0083] In some embodiments, the energy storage battery module also includes an inverter, and the PLC controller is further configured to control the energy storage battery module to provide power to users through the inverter when the grid access module disconnects the mains power supply. For example, during a power outage, the lithium iron phosphate battery pack can output 220V AC power through the inverter to provide temporary power for household lighting, mobile phone charging, and small electrical appliances, thereby improving the practicality of the electric vehicle charging station system and meeting the emergency needs of rural power outages.

[0084] The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program code, or a transient storage medium.

[0085] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, separate components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terms used in this application are only used to describe the embodiments and are not used to limit the scope of protection. As used in the description in the text, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, an element defined by the statement "comprises a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0086] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0087] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

Claims

1. An electric vehicle charging pile system, characterized in that: The electric vehicle charging pile system includes: a charging pile body, a solar power supply module, an energy storage battery module, a grid access module, a charging control module and a fire detection module, wherein: The output end of the solar power supply module is connected to the energy storage battery module and the charging interface of the charging pile body respectively through the MPPT controller, and the energy storage battery module is connected to the grid access module and the charging interface respectively through the charging control module; The fire detection module is used to collect fire data and transmit the fire data to the charging control module so that the charging control module can perform fire detection.

2. The electric vehicle charging pile system according to claim 1, characterized in that: The solar power supply module includes a double-sided photovoltaic panel, a self-cleaning coating is provided on the surface of the double-sided photovoltaic panel, and the bracket of the double-sided photovoltaic panel supports automatic adjustment of the tilt angle.

3. The electric vehicle charging pile system according to claim 1, characterized in that: The solar power supply module includes a light intensity sensor, the energy storage battery module includes a BMS, and the charging control module includes a relay group and a PLC controller. The PLC controller is configured as follows: receiving the light intensity collected by the light intensity sensor and making a judgment; When the light intensity is greater than a first preset value, the MPPT controller controls the solar power supply module to transmit electric energy to the charging port and then to the energy storage battery module; When the light intensity is less than or equal to the first preset value and the state of charge collected by the BMS is greater than or equal to a second preset value, the relay group controls the energy storage battery module to transmit electric energy to the charging port; When the state of charge in the energy storage battery module is less than the second preset value, the grid access module is controlled by the relay group to transmit electric energy to the charging interface.

4. The electric vehicle charging pile system according to claim 3, characterized in that: The charging control module further includes a load management submodule. When the grid access module is controlled by the relay group to transmit electric energy to the charging interface, the PLC controller is further configured to: The load management submodule is controlled to adjust the charging power so that the grid access module transmits electric energy to the charging interface according to the charging power.

5. The electric vehicle charging pile system according to claim 3, characterized in that: The energy storage battery module further includes a lithium iron phosphate battery pack. When the grid access module is controlled by the relay group to transmit electric energy to the charging port, the PLC controller is further configured to: The grid access module is controlled according to a preset power to transmit electric energy to the lithium iron phosphate battery pack.

6. The electric vehicle charging pile system according to claim 1, characterized in that: The fire detection module includes an infrared temperature sensor, a photoelectric smoke detector, an arc monitoring submodule, and a linkage disposal submodule. The charging control module is configured as follows: receiving fire data collected by the infrared temperature sensor, the photoelectric smoke detector, and the arc monitoring submodule; The fire data is cross-validated, and only when at least two of the three trigger a threshold value, the power supply is cut off and the early warning is initiated through the linkage handling submodule.

7. The electric vehicle charging pile system according to claim 1, characterized in that: The electric vehicle charging pile system further includes: a user interaction module, the user interaction module including a touch screen, and is communicatively connected to the charging control module, the touch screen being configured to: Get and display charging status; A control instruction input by a user for indicating a charging mode is received, and the control instruction is transmitted to the charging control module so that the charging control module controls charging according to the charging mode.

8. The electric vehicle charging pile system according to claim 1, characterized in that: The electric vehicle charging pile system further includes a remote monitoring module, which is configured to: Cloud data upload is achieved through mobile communication technology, so that users can remotely control charging start and stop and receive early warning information through mobile terminals.

9. The electric vehicle charging pile system according to claim 1, characterized in that: The charging pile body is made of fire-retardant material, and a fire-proof isolation fence of a preset height is set around the charging pile body.

10. The electric vehicle charging pile system according to claim 1, characterized in that: The energy storage battery module further includes an inverter, and the PLC controller is further configured to: When the grid access module is disconnected from the mains power supply, the energy storage battery module is controlled to supply power to the user through the inverter.

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