Charging control protection system of intelligent household charging pile

Abstract

The invention provides an intelligent household charging pile charging control protection system, and relates to the technical field of charging control. Comprising a charging state monitoring module used for monitoring battery capacity in real time and generating a signal to be sent to an automatic power-off module when the battery capacity reaches a preset full-power threshold value; the voltage detection module continuously monitors a voltage value, judges abnormity when voltage fluctuation exceeds a safety threshold value, and generates a signal to the automatic power-off module; and the automatic power-off module is in communication connection with the charging pile and the charging pile, and immediately cuts off power output of the charging pile to stop charging after receiving a full electric signal or a power-off protection signal. Through cooperative work of the modules, overcharge of the battery can be effectively avoided, the safety of voltage in the charging process can be guaranteed, and the reliability and safety of the charging system are improved.

Description

Technical Field

[0001] The present application relates to the field of charging control technology, and in particular to a charging control and protection system for an intelligent home charging pile. Background Art

[0002] With the continuous development of electric transportation, home charging piles have become the preferred equipment for electric car users for daily charging. The convenience and practicality of home charging piles have greatly affected the user experience of electric vehicles.

[0003] Currently, existing home charging piles usually adopt a simple timed charging method. Before starting charging, users need to set a fixed charging time on the control panel or APP of the charging pile. When the charging actually reaches the charging time set by the user, the charging pile will automatically disconnect the power supply and stop charging.

[0004] However, this method lacks real-time monitoring and feedback mechanism of charging status, making it difficult to accurately grasp the charging progress and battery status, and it is also difficult to automatically cut off the power after charging is completed or in an abnormal state. Summary of the invention

[0005] The present application provides a smart home charging pile charging control and protection system for accurately controlling and comprehensively protecting the charging process of a home charging pile to ensure charging safety.

[0006] In the first aspect, the present application provides a smart home charging pile charging control and protection system, including: a charging status monitoring module, which is used to monitor the power information of the battery in the charging pile in real time. When the battery power reaches a preset full-charge threshold, a full-charge signal is generated, and the full-charge signal is sent to an automatic power-off module; a voltage detection module, which is used to continuously monitor the voltage value of the charging pile during operation. When it is detected that the voltage fluctuation range corresponding to the voltage value exceeds a preset voltage safety threshold, it is determined that the voltage is abnormal. The voltage detection module generates a power-off protection signal and sends this signal to the automatic power-off module; an automatic power-off module, which is communicatively connected to the charging status monitoring module and the voltage detection module. When the full-charge signal or the power-off protection signal is received, the automatic power-off module immediately cuts off the power output of the charging pile to stop the charging process.

[0007] By adopting the above technical solution, the charging status monitoring module monitors the power in real time, and when the full power threshold is reached, the power is cut off through the automatic power-off module, which can effectively prevent the battery from overcharging, extend the battery life, and avoid safety hazards caused by overcharging, such as battery bulging and explosion. At the same time, the voltage detection module monitors voltage fluctuations and automatically cuts off the power when abnormal, ensuring that the charging equipment and battery work within a safe voltage range, further improving the safety and reliability of the system.

[0008] In combination with some embodiments of the first aspect, in some embodiments, a temperature detection module is further included, which is arranged inside the charging pile, and is used to detect the internal temperature of the charging pile and send the temperature data to the automatic power-off module; the automatic power-off module is connected to the temperature detection module, and after receiving the temperature data, if it is monitored that the temperature data is abnormal, the power output of the charging pile is cut off.

[0009] By adopting the above technical solution, the temperature detection module detects the internal temperature and feeds back to the automatic power-off module, and cuts off the power supply when the temperature is abnormal. This can prevent the charging pile from causing fire and other safety accidents due to excessive temperature, and also avoid the adverse effects of temperature on battery performance, ensuring that the battery is charged in a suitable temperature environment, improving charging efficiency and battery life.

[0010] In combination with some embodiments of the first aspect, in some embodiments, an exception handling module is also included, which is connected to the charging status monitoring module, the voltage detection module and the automatic power-off module; the exception handling module is used to lock the status of the charging interface after the automatic power-off module cuts off the power supply, and at the same time prompt the cause of the fault on the display screen; the exception handling module is also used to unlock the locking status of the charging interface after a preset time.

[0011] By adopting the above technical solution, the abnormal handling module locks the charging port after power failure and prompts the cause of the fault, which can prevent users from charging again by mistake and ensure the safety of equipment and personnel. The lock is released after a preset time, which is convenient for users to use normally in the future, improving the convenience and safety of the system.

[0012] In combination with some embodiments of the first aspect, in some embodiments, the exception handling module is also used to determine the cause of the power outage during the power-off protection process; the exception handling module detects the internal voltage value of the charging pile, and if the internal voltage value is normal, it is determined that the power outage is due to the battery, and a prompt to replace the battery is displayed on the display screen; if the internal voltage value is detected to be abnormal, it is determined that the power outage is due to the power supply, and a prompt to check the power line is displayed on the display screen.

[0013] By adopting the above technical solution, the exception handling module determines the cause of the power outage and gives a prompt. The user can accurately troubleshoot the problem according to the prompt. If the power outage is caused by the battery, the battery can be replaced in time. If the power outage is caused by the power supply, the line can be detected, which improves the efficiency of troubleshooting, reduces maintenance time and cost, and ensures the normal operation of the charging system.

[0014] According to claim 1, the household charging pile charging control and protection system is characterized in that it also includes a remote control terminal for receiving and saving the charging time or charging fee preset by the user; a billing module is communicated with the remote control terminal and is used to calculate the corresponding charging time when the charging fee set by the user is received. The billing module is also used to calculate the corresponding charging fee when the charging time set by the user is received; the charging status monitoring module is communicated with the billing module, and the charging status monitoring module is also used to generate a charging satisfaction signal based on the charging time calculated by the billing module when the actual charging time monitored reaches the charging time to cut off the power output.

[0015] By adopting the above technical solution, the remote control terminal and the billing module cooperate, the user can set the charging time or fee, and the charging status monitoring module controls the charging according to the time calculated by the billing module. This meets the different charging needs of users, improves the user's convenience, and can also reasonably control the charging cost and realize intelligent charging management.

[0016] In combination with some embodiments of the first aspect, in some embodiments, it also includes a power outage warning module, which is used to send a power outage warning prompt to the user terminal at a preset time in advance before the power outage; a power outage delay module, which is communicated with the power outage warning module, and is used to send a selection of extending the charging time to the user terminal after receiving the power outage warning prompt; the charging status monitoring module is communicated with the power outage delay module, and when the user chooses to extend the charging time at the user terminal, the charging status monitoring module extends the corresponding charging time.

[0017] By adopting the above technical solution, the power failure warning module can provide early warning, and the power failure delay module can allow users to choose to extend the charging time. This provides users with enough time to prepare, avoids the inconvenience caused by sudden power failure, improves user experience, and also ensures the flexibility and controllability of charging.

[0018] In combination with some embodiments of the first aspect, in some embodiments, it also includes a battery automatic protection module, which is used to protect the battery from charging and discharging after a power outage; a battery status detection unit, which is used to detect the real-time voltage, current and temperature parameters of the battery; and an intelligent charging and discharging optimization module, which is connected to the battery status detection unit and the battery automatic protection module, and is used to calculate the optimal charging and discharging curve of the battery based on the parameter data fed back by the battery status detection unit, and control the battery automatic protection module to charge and discharge the battery according to the optimal charging and discharging curve.

[0019] By adopting the above technical solution, the battery automatic protection module protects the battery after power failure and charges and discharges it, and the intelligent charge and discharge optimization module calculates the optimal curve to control the charge and discharge according to the detection parameters. This can extend the service life of the battery, improve the charge and discharge efficiency of the battery, and ensure that the battery can maintain a good performance state under different working conditions.

[0020] In combination with some embodiments of the first aspect, in some embodiments, a temperature control module is also included for controlling the temperature of the charging pile; when the temperature monitored by the temperature detection module is higher than the preset temperature threshold, the temperature control module starts the heat dissipation unit of the charging pile to dissipate the heat of the charging pile; when the temperature monitored by the temperature detection module is lower than the preset temperature threshold, the temperature control module starts the heating unit of the charging pile to heat the preset part of the charging pile.

[0021] By adopting the above technical solution, the temperature control module controls the heat dissipation or heating unit according to the monitoring results of the temperature sensor. This enables the charging pile to work in a suitable temperature environment, improves the stability and reliability of the equipment, and avoids the adverse effects of excessively high or low temperatures on the charging equipment and battery performance.

[0022] In combination with some embodiments of the first aspect, in some embodiments, a photovoltaic charging module is also included, which is used to convert light energy into electrical energy to provide electrical energy for the charging pile. The charging status monitoring module preferentially uses the electrical energy provided by the photovoltaic charging module for charging.

[0023] By adopting the above technical solution, clean energy is utilized, energy costs are reduced, and dependence on traditional energy is reduced, which also has environmental protection significance.

[0024] In combination with some embodiments of the first aspect, in some embodiments, a charging mode selection module is also included to facilitate users to select different charging modes, the charging modes including normal mode, fast mode and energy-saving mode. The charging status monitoring module is also used to determine charging parameters and power-off conditions according to the charging mode selected by the user.

[0025] By adopting the above technical solution, different charging needs of users are met. For example, if fast charging is required, the fast mode can be selected, and if energy saving is required, the energy saving mode can be selected, which improves the user experience and the applicability of the charging system.

[0026] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. The charging status monitoring module is used to monitor the power in real time, and the automatic power-off module is used to cut off the power when the power is fully charged, and the voltage detection module is used to automatically cut off the power when the voltage fluctuation is abnormal. Therefore, the technical problem that the existing technology cannot monitor the charging status in real time and automatically cut off the power to avoid battery overcharging and ensure voltage safety is effectively solved, thereby achieving the technical effect of extending the battery life, avoiding safety hazards, and improving system safety and reliability.

[0027] 2. Due to the technical means of using the exception handling module to lock the charging interface after power failure and prompt the cause of the fault, as well as to determine the cause of the power failure and give corresponding prompts, the technical problems of difficulty in troubleshooting and inability to effectively prevent user misoperation in the prior art are effectively solved, thereby achieving the technical effect of improving troubleshooting efficiency, reducing maintenance time and cost, and ensuring the normal operation of the charging system and the safety of personnel and equipment.

[0028] 3. Since the temperature control module controls the heat dissipation or heating unit according to the monitoring results of the temperature detection module, the technical problem that the charging pile in the prior art is difficult to adapt to different temperature environments and affects the performance of the charging equipment and the battery is effectively solved, thereby achieving the technical effect of improving the stability and reliability of the equipment and avoiding the adverse effects of temperature on the charging equipment and battery performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a module connection diagram of an embodiment of the present application; Figure 2 This is another module connection diagram of an embodiment of the present application.

[0030] Description of reference numerals: 1. Charging status monitoring module; 2. Voltage detection module; 3. Automatic power-off module; 4. Temperature detection module; 5. Abnormal handling module; 6. Remote control terminal; 7. Billing module; 8. Power-off warning module; 9. Power-off delay module; 10. Battery automatic protection module; 11. Battery status detection unit; 12. Intelligent charging and discharging optimization module; 13. Temperature control module; 14. Heat dissipation unit; 15. Heating unit; 16. Photovoltaic charging module; 17. Charging mode selection module. DETAILED DESCRIPTION

[0031] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to and includes any or all possible combinations of one or more listed items.

[0032] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0033] The present application embodiment provides a smart home charging pile charging control protection system, such as Figure 1 As shown, Figure 1 It is a module connection diagram of an embodiment of the present application, including: exist Figure 1 In the present invention, the charging control and protection system for a household charging pile includes a charging status monitoring module 1, which is used to monitor the power information of the battery in the charging pile in real time. When the battery power reaches a preset full power threshold, a full power signal is generated and sent to the automatic power off module 3; The voltage detection module 2 is used to continuously monitor the voltage value of the charging pile during operation. When it is detected that the voltage fluctuation range corresponding to the voltage value exceeds the preset voltage safety threshold, it is determined that the voltage is abnormal. The voltage detection module 2 generates a power-off protection signal and sends the signal to the automatic power-off module 3; The automatic power-off module 3 is in communication with the charging status monitoring module 1 and the voltage detection module 2. When receiving the full-charge signal or the power-off protection signal, the automatic power-off module 3 immediately cuts off the power output of the charging pile remote control terminal 6 to stop the charging process.

[0034] Specifically, a power detection circuit can be set in the charging pile, and a voltage detection method is adopted to arrange detection circuits at the positive and negative terminals of the battery pack. By collecting the voltage values ​​at the terminals and establishing a power-voltage conversion model according to the battery pack capacity characteristic parameters, the remaining power of the battery pack is calculated in real time. At the same time, a full charge threshold is set. When the remaining power of the battery pack detected reaches this threshold, it indicates that the battery pack is full. The charging state monitoring module 1 will generate a full charge signal and send it to the automatic power-off module 3 through the communication line. The function of the voltage detection module 2 is to monitor the voltage parameters in the charging process in real time to determine whether the voltage is abnormal. It adopts a voltage data acquisition circuit, arranges detection points at nodes such as the power input end of the charging pile, the two ends of the battery pack, and the charging socket end, and continuously collects the voltage values ​​of each node. At the same time, a voltage threshold table for determining the normal fluctuation range of the voltage is set. The system will compare the measured voltage value with the upper and lower limits of the threshold table in real time. If the detected voltage exceeds the normal fluctuation range, it is judged as abnormal voltage. The voltage detection module 2 will generate a power-off protection signal and send it to the automatic power-off module 3 through the communication line. The automatic power-off module 3 receives and analyzes the full-charge signal and power-off protection signal sent by it. Once any signal is received, the automatic power-off module 3 will immediately perform a power-off operation, cut off the power output of the charging pile, and stop the charging process. The hardware circuit of the automatic power-off module 3 is composed of relays, composite switches, etc., and the software sets the analysis logic of the detection signal. When a specific signal is received, the relay is controlled to disconnect and the power connection is cut off. In addition, an alarm module is also provided. When the power is cut off, a visual or sound alarm can be issued to prompt the user that charging has stopped.

[0035] In summary, the charging control system realizes the protective automatic power-off function through accurate monitoring and intelligent judgment of charging parameters, improves charging safety and automation, and provides an efficient and convenient intelligent charging protection solution for electric vehicles. Compared with the simple timed charging mode, this system is more intelligent, flexible, safe and reliable.

[0036] For ease of understanding, the following further describes the modules of the system provided by this implementation in combination with the above embodiments. Figure 2 , Figure 2 This is another module connection diagram of an embodiment of the present application.

[0037] exist Figure 2In the present invention, the charging control and protection system of the household charging pile includes a temperature detection module 4, which is arranged inside the charging pile, and is used to detect the internal temperature of the charging pile, and send the temperature data to the automatic power-off module 3; the automatic power-off module 3 is connected to the temperature detection module 4, and after receiving the temperature data, if the temperature data is detected to be abnormal, the power output of the charging pile is cut off. Specifically, the temperature sensor used by the temperature detection module 4 is arranged in multiple key positions such as the electric control box inside the charging pile and around the battery pack, and the temperature distribution inside the charging pile can be fully monitored. The type of temperature sensor can be a precision resistive temperature probe based on the PT100 chip, and the probe end is placed in the target detection area, and the temperature data is collected based on the principle that resistance changes with temperature.

[0038] The temperature detection module 4 is also provided with a signal amplification and A / D conversion circuit, which amplifies, filters and converts the tiny resistance signal of the PT100 probe into analog and digital form, and then sends it to the automatic power-off module 3 in the form of a digital signal through the RS485 serial port. After receiving the real-time temperature data sent by the temperature detection module 4, the automatic power-off module 3 will first cache the data, and then call the temperature judgment algorithm to analyze and judge the data. The specific pseudo code of the temperature judgment algorithm is as follows: take out 10 groups of historical temperature data and 1 group of current temperature data newly received from the temperature cache queue; calculate the average temperature and standard deviation of the 10 groups of historical data; if the current temperature is greater than the average temperature + 3* standard deviation, it is judged as a temperature abnormality; if the temperature abnormality lasts for 3 sampling cycles, it is confirmed as a serious temperature abnormality; at this time, the automatic power-off module 3 sends a control signal to drive the relay to disconnect the power output of the charging pile. In this way, random noise interference in the sensor signal can be effectively filtered to avoid wrong disconnection. At the same time, combined with multiple judgments, the power-off protection is only executed when the temperature continues to be abnormal, which improves reliability.

[0039] In some embodiments, the household charging pile charging control protection system also includes an exception handling module 5, which is connected to the charging state monitoring module 1, the voltage detection module 2 and the automatic power-off module 3; the exception handling module 5 is used to lock the state of the charging interface after the automatic power-off module 3 cuts off the power, and prompts the cause of the fault on the display screen; the exception handling module 5 is also used to release the locked state of the charging interface after a preset time. Specifically, the exception handling module 5 may include an electromagnetic lock, which is set at the charging interface, and the software sets the control logic of stimulating the electromagnetic lock to enter the locked state after the automatic power-off. The electromagnetic lock adopts a DC power supply mode. Under normal conditions, the power supply closes the electromagnet and the charging interface is in an open state; after receiving the control signal of the automatic power-off module 3, the exception handling module 5 cuts off the power supply of the electromagnetic lock, so that it disconnects and releases the lock of the charging interface. At the same time, the exception handling module 5 is also connected to the display screen module of the charging pile, and can prompt the user "charging protection power-off" through the display screen interface when the power is off, and display the cause of the power off, such as "battery is full", "voltage abnormality", etc., so that the user can quickly understand the power off situation. In this way, when an abnormality occurs in a charging pile, other users can be prevented from using the abnormal charging pile without knowing it, thereby improving the safety of using the charging pile.

[0040] In some embodiments, the exception handling module 5 in the charging control protection system of the household charging pile is also used to determine the cause of the power outage during the power-off protection process; the exception handling module 5 detects the internal voltage value of the charging pile. If the internal voltage value is normal, it is determined that the power outage is caused by the battery, and a prompt to replace the battery is displayed on the display screen; if the internal voltage value is detected to be abnormal, it is determined that the power outage is caused by the power supply, and a prompt to detect the power supply line is displayed on the display screen. Specifically, after the power-off protection, the exception handling module 5 will first detect the voltage value inside the charging pile to determine the cause of the power outage. It uses a voltage data acquisition module to arrange voltage acquisition points at key nodes such as the battery pack ends and the DC-DC conversion output end of the charging pile. The exception handling module 5 will read the data of these voltage acquisition points in real time, and compare the measured voltage value with the standard voltage value of the circuit design parameters, and determine the cause of the power outage based on the comparison result. Read the voltage value U1 at both ends of the battery pack, and read the voltage value U2 at the output end of the DC-DC converter; if U1 is normal but U2 is abnormal (the deviation from the standard value is too large), it is judged that the DC-DC converter and its subsequent power supply circuit are faulty, and a display instruction is sent to the display end of the charging pile to make the display end display "Please check the power supply circuit"; if U1 is abnormal but U2 is normal, it is judged that it is caused by a problem with the battery pack, and the display end is controlled to display "Please replace the battery"; if both U1 and U2 are abnormal, it is judged that the overall circuit is faulty, and the display end is controlled to display "System error, please contact maintenance". Among them, the display content can be set in advance according to the actual situation, and is not limited here. Through this targeted power-off cause determination and corresponding prompts, users can be guided to quickly locate the fault and carry out targeted processing, shorten the maintenance and after-sales time of the charging pile, and improve the user experience.

[0041] In some embodiments, the household charging pile charging control protection system also includes a remote control terminal 6 for receiving and saving the charging time or charging fee preset by the user; a billing module 7, which is connected to the remote control terminal 6 for calculating the corresponding charging time when the charging fee set by the user is received, and the billing module 7 is also used to calculate the corresponding charging fee when the charging time set by the user is received; the charging state monitoring module 1 is connected to the billing module 7, and the charging state monitoring module 1 is also used to generate a charging satisfaction signal according to the charging time calculated by the billing module 7 when the actual charging time monitored reaches the charging time, so as to cut off the power output. Specifically, the remote control terminal 6 can be an App program installed on the user's mobile phone, or it can be an intelligent terminal on the charging pile. The user can pre-set the total time (such as 8 hours) or total fee (such as 10 yuan) of this charging on the App or terminal as needed. These charging parameters will be sent to the background server via the Internet, and then the server will transmit the user's setting instructions to the billing module 7 through the API interface. The billing module 7 has a built-in electricity price algorithm and an electricity calculation model. After receiving the charging time or fee parameters, it will calculate another corresponding parameter. The billing module 7 will send the calculated charging time or fee feedback to the charging status monitoring module 1. The monitoring module has a built-in timing function. After charging starts, it detects the charging time that has been carried out in real time and compares it with the charging time setting value fed back by the billing module 7. When the actual charging time detected reaches the set time, the charging status monitoring module 1 will generate a satisfaction signal that the charging is completed and send it to the automatic power-off module 3 to disconnect the power output of the charging pile. In this way, the system realizes the function of intelligently controlling the charging time or fee according to user needs, which improves flexibility. That is, it can be charged to the set time on demand, or it can be charged to the set fee according to the budget, avoiding the waste of electricity or overspending on electricity caused by overcharging.

[0042] In some embodiments, the home charging pile charging control protection system also includes a power-off warning module 8, which is used to send a power-off warning prompt to the user terminal in advance before the power is cut off; a power-off delay module 9 is connected to the power-off warning module 8, and is used to send a choice of extending the charging time to the user terminal after receiving the power-off warning prompt; the charging state monitoring module 1 is connected to the power-off delay module 9, and when the user chooses to extend the charging time at the user terminal, the charging state monitoring module 1 extends the corresponding charging time. Specifically, the power-off warning module 8 of the system will actively issue a warning when the remaining charging time is less. Its warning threshold can be set by the user on the App as needed, for example, it is set to remind when there are 30 minutes left to charge. The power-off warning module 8 reads the real-time power data fed back by the charging state monitoring module 1, and calculates the remaining charging time in real time according to the preset full power threshold. When the calculated remaining charging time is lower than the warning threshold, the power-off warning module 8 will send a reminder notification of the upcoming power-off to the user's App. The notification content includes the current remaining charging time and the expected power-off time, and reminds the user in a friendly way that the charging is about to end. After receiving the reminder notification, the App will pop up a user selection interface, asking the user whether the charging time needs to be extended. The interface can set multiple options for extended charging for the user to choose. After the selection is completed, the App will send the user's selection result to the power-off delay module 9 of the charging pile. After the delay module receives the user's delay selection instruction, it will send the corresponding extended charging time to the charging status monitoring module 1. After receiving the extended charging time parameters, the monitoring module will modify the full charge threshold and total charging time parameters of this charging accordingly, and save them in the system memory. In this way, when the real-time detected charging time reaches the new full charge time, a full charge signal will be issued to perform the power-off operation. If the user does not make a delay selection, the system will default to the original full charge power-off action after the warning time. This early warning reminder and delay selection mode greatly facilitates users to flexibly decide whether to extend the total time of a single charge according to the actual situation, avoids the inconvenience caused by premature power off, and improves the user experience.

[0043] In some embodiments, the charging control and protection system for a household charging pile further includes a battery automatic protection module 10 for protecting the battery after power failure; a battery state detection unit 11 for detecting the real-time voltage, current and temperature parameters of the battery; and an intelligent charge and discharge optimization module 12, which connects the battery state detection unit 11 and the battery automatic protection module 10, and is used to calculate the optimal charge and discharge curve of the battery according to the parameter data number fed back by the battery state detection unit 11, and control the battery automatic protection module 10 to charge and discharge the battery according to the optimal charge and discharge curve. Specifically, during the daily use of the charging pile, power failure may occur due to a variety of reasons, such as power grid failure, automatic power failure after charging is completed, etc. As an energy storage device, the battery needs to be properly protected in these situations to extend its service life and maintain its performance. The battery state detection unit 11 may include a precise voltage sensor, a current sensor and a temperature sensor for detecting the real-time voltage, current and temperature parameters of the battery pack, respectively. The intelligent charge and discharge optimization module 12 has a built-in battery charge and discharge model and a parameter optimization algorithm program. It can receive multi-parameter data of voltage, current and temperature fed back by the detection unit. Then, based on these data, combined with the matched battery type and parameters, after calculation and analysis, the current charge and discharge state and margin of the battery pack, as well as the optimal charge and discharge curve, charge and discharge limit, etc. can be obtained. Finally, the optimization calculation results are output to the battery protection module in the form of control signals. The battery automatic protection module 10 includes a controllable charge and discharge execution circuit, which can scientifically charge and discharge the battery pack according to the control signal output by the intelligent optimization module and the optimal charge and discharge curve. At the same time, it has a protection function, and quickly disconnects the circuit to protect the battery when a battery abnormality is detected. In this way, the battery status can be monitored in real time, the optimal charge and discharge scheme can be dynamically calculated, and closed-loop execution can be performed to realize intelligent protection of the battery and extend its service life.

[0044] In some embodiments, the household charging pile charging control protection system further includes a temperature control module 13 for controlling the temperature of the charging pile; when the temperature detected by the temperature detection module 4 is higher than the preset temperature threshold, the temperature control module 13 starts the heat dissipation unit 14 of the charging pile to dissipate heat for the charging pile; when the temperature detected by the temperature detection module 4 is lower than the preset temperature threshold, the temperature control module 13 starts the heating unit 15 of the charging pile to heat the preset part of the charging pile. Specifically, the temperature detection module 4 uses a precise resistance temperature probe, which is arranged around the battery pack of the charging pile, near the circuit board and electronic components, and other key parts to monitor the temperature parameters of these areas in real time. The temperature data is collected by the acquisition circuit and transmitted to the temperature control module 13. The temperature control module 13 has a built-in temperature threshold judgment and control algorithm program, and first reads the temperature data fed back by the temperature detection module 4. Through such a closed-loop temperature control method, the temperature of the charging pile can be monitored and actively adjusted in real time, and maintained within the temperature range of normal operation of the battery and electronic equipment, avoiding failures or damage caused by overheating or overcooling, and improving the reliability and safety of the system. Through such a temperature closed-loop control method, the temperature of the charging pile can be monitored in real time and actively adjusted to maintain it within the normal operating temperature range of the battery and electronic equipment, avoiding failure or damage caused by overheating or overcooling, and improving the reliability and safety of the system.

[0045] In some embodiments, the charging control and protection system for the household charging pile further includes a photovoltaic charging module 16, which is used to convert light energy into electrical energy to provide electrical energy for the charging pile. The charging state monitoring module 1 preferentially uses the electrical energy provided by the photovoltaic charging module 16 for charging. Specifically, the photovoltaic charging module 16 may include a photovoltaic module, which is a photovoltaic cell made of materials such as monocrystalline silicon or polycrystalline silicon, and converts sunlight into direct current through the photovoltaic effect. The front and back sides of the photovoltaic module will be installed on the top or side of the charging pile according to the sunshine conditions to absorb more light radiation and convert it into electrical energy. The charging state monitoring module 1 is directly connected to the output end of the photovoltaic charging module 16, and it can monitor the voltage, current and other parameters output by the photovoltaic module in real time. When the charging state monitoring module 1 detects that the photovoltaic charging module 16 is supplying power, it will first determine whether its output power meets the charging needs of the vehicle. If it does, it will directly control the use of photovoltaic power to charge the vehicle battery. In this way, different power sources can be managed intelligently to ensure that the clean and environmentally friendly electricity of the photovoltaic module is preferentially used to charge the vehicle battery quickly and economically when the photovoltaic power allows, thereby realizing the efficient use of renewable energy.

[0046] In some embodiments, the household charging pile charging control protection system also includes a charging mode selection module 17, which is used to facilitate users to select different charging modes, including normal mode, fast mode and energy-saving mode. The charging state monitoring module 1 is also used to determine the charging parameters and power-off conditions according to the charging mode selected by the user. Specifically, the charging mode selection module 17 is provided with a mode selection button or a touch screen on the control panel of the charging pile or the remote control terminal 6, so that users can select different charging modes such as normal mode, fast mode and energy-saving mode as needed. Inside the charging pile, the charging mode selection module 17 is electrically connected to the main control board, which can capture the mode selection operation of the user on the control panel, and transmit the selected mode signal to the charging state monitoring module 1. After receiving the mode selection signal, the charging state monitoring module 1 will determine the corresponding charging voltage, current parameters and power-off conditions according to the selected mode, and control the power conversion and power supply module of the subsequent stage to charge according to the specified mode accordingly. At the same time, the charging state monitoring module 1 will display the charging mode selected by the user on the display screen of the charging pile for user confirmation. The fast mode meets urgent charging needs and greatly shortens the charging time. The normal mode takes into account both charging time and battery life. The energy-saving mode can be used when there is no rush to charge, extending the battery life. Different charging modes can meet the charging needs of users in different scenarios and improve the convenience and flexibility of charging.

[0047] The household charging pile charging control and protection system of this embodiment includes: a charging status monitoring module 1, a voltage detection module 2, an automatic power-off module 3, a temperature detection module 4, an abnormality handling module 5, a remote control terminal 6, a billing module 7, a power-off warning module 8, a power-off delay module 9, a battery automatic protection module 10, a battery status detection unit 11, an intelligent charging and discharging optimization module 12, a temperature control module 13, a heat dissipation unit 14, a heating unit 15, a photovoltaic charging module 16, and a charging mode selection module 17.

[0048] The charging status monitoring module 1 is used to monitor the power information of the battery in the charging pile in real time. When the battery power reaches a preset full-power threshold, a full-power signal is generated and sent to the automatic power-off module 3; The voltage detection module 2 is used to continuously monitor the voltage value of the charging pile during operation. When it is detected that the voltage fluctuation range corresponding to the voltage value exceeds the preset voltage safety threshold, it is determined that the voltage is abnormal. The voltage detection module 2 generates a power-off protection signal and sends the signal to the automatic power-off module 3; The automatic power-off module 3 is connected to the charging state monitoring module 1 and the voltage detection module 2 in communication. When the full-charge signal or the power-off protection signal is received, the automatic power-off module 3 immediately cuts off the power output of the charging pile to stop the charging process; The temperature detection module 4 is arranged inside the charging pile, and is used to detect the internal temperature of the charging pile, and send the temperature data to the automatic power-off module 3; The automatic power-off module 3 is connected to the temperature detection module 4, and after receiving the temperature data, if the temperature data is detected to be abnormal, the power output of the charging pile is cut off; An abnormality processing module 5 is connected to the charging state monitoring module 1, the voltage detection module 2 and the automatic power-off module 3; The abnormality handling module 5 is used to lock the state of the charging interface after the automatic power-off module 3 cuts off the power supply, and at the same time prompt the cause of the fault on the display screen; The exception handling module 5 is also used to release the locking state of the charging interface after a preset time; The exception handling module 5 is also used to determine the cause of power failure during the power failure protection process; The abnormality processing module 5 detects the internal voltage value of the charging pile. If the internal voltage value is normal, it is determined that the power is off due to battery reasons, and a prompt to replace the battery is displayed on the display screen; If the internal voltage value is detected to be abnormal, it is determined that the power is off due to power supply, and a prompt to check the power supply line is displayed on the display; The remote control terminal 6 is used to receive and save the charging time or charging fee preset by the user; The charging module 7 is connected to the remote control terminal 6 for calculating the corresponding charging time when receiving the charging fee set by the user. The charging module 7 is also used to calculate the corresponding charging fee when receiving the charging time set by the user; The charging state monitoring module 1 is in communication with the billing module 7. The charging state monitoring module 1 is also used to generate a charging satisfaction signal to cut off the power output when the actual charging time monitored reaches the charging time calculated by the billing module 7; A power outage warning module 8 is used to send a power outage warning prompt to the user terminal at a preset time before the power outage; A power-off delay module 9 is connected to the power-off warning module 8 for sending a selection of extending the charging time to the user terminal after receiving the power-off warning prompt; The charging state monitoring module 1 is in communication connection with the power-off delay module 9. When the user at the user end chooses to extend the charging time, the charging state monitoring module 1 extends the corresponding charging time. The battery automatic protection module 10 is used to protect the battery after power failure. A battery status detection unit 11 is used to detect the real-time voltage, current and temperature parameters of the battery; The intelligent charge and discharge optimization module 12 is connected to the battery state detection unit 11 and the battery automatic protection module 10, and is used to calculate the optimal charge and discharge curve of the battery according to the parameter data fed back by the battery state detection unit 11, and control the battery automatic protection module 10 to charge and discharge the battery according to the optimal charge and discharge curve; A temperature control module 13 is used to control the temperature of the charging pile; When the temperature detected by the temperature detection module 4 is higher than the preset temperature threshold, the temperature control module 13 starts the heat dissipation unit 14 of the charging pile to dissipate heat from the charging pile; when the temperature detected by the temperature detection module 4 is lower than the preset temperature threshold, the temperature control module 13 starts the heating unit 15 of the charging pile to heat the preset part of the charging pile; Photovoltaic charging module 16, the photovoltaic charging module 16 is used to convert light energy into electrical energy to provide electrical energy for the charging pile. The charging status monitoring module 1 preferentially uses the electrical energy provided by the photovoltaic charging module 16 for charging; a charging mode selection module 17, which is used to facilitate users to select different charging modes, and the charging modes include normal mode, fast mode and energy-saving mode. The charging status monitoring module 1 is also used to determine charging parameters and power-off conditions according to the charging mode selected by the user.

[0049] As mentioned above, by comprehensively monitoring the power, voltage, temperature and other parameters during the charging process, the power is automatically cut off for protection under abnormal conditions, and accurate management of charging time and cost is achieved, which can extend or shorten the charging time. Photovoltaic power generation can be used for intelligent charging. Users can also choose different charging modes independently. Overall, intelligent, refined control and safety protection of charging are achieved, making the charging of home charging piles more efficient, economical, safe and convenient.

Claims

1. A smart home charging pile charging control and protection system, characterized in that: include: The charging status monitoring module is used to monitor the power information of the battery in the charging pile in real time. When the battery power reaches a preset full-power threshold, a full-power signal is generated and sent to the automatic power-off module; A voltage detection module is used to continuously monitor the voltage value of the charging pile during operation. When it is detected that the voltage fluctuation range corresponding to the voltage value exceeds a preset voltage safety threshold, it is determined that the voltage is abnormal. The voltage detection module generates a power-off protection signal and sends the signal to the automatic power-off module. The automatic power-off module is in communication with the charging status monitoring module and the voltage detection module. When the full-charge signal or the power-off protection signal is received, the automatic power-off module immediately cuts off the power output of the charging pile to stop the charging process.

2. The household charging pile charging control protection system according to claim 1, characterized in that: It also includes a temperature detection module, which is arranged inside the charging pile and is used to detect the internal temperature of the charging pile and send the temperature data to the automatic power-off module; The automatic power-off module is connected to the temperature detection module, and after receiving the temperature data, if it is detected that the temperature data is abnormal, the power output of the charging pile is cut off.

3. The household charging pile charging control protection system according to claim 1, characterized in that: It also includes an abnormality processing module, which is connected to the charging status monitoring module, the voltage detection module and the automatic power-off module; The abnormality handling module is used to lock the state of the charging interface after the automatic power-off module cuts off the power supply, and at the same time prompt the cause of the fault on the display screen; The exception handling module is also used to release the locking state of the charging interface after a preset time.

4. The household charging pile charging control protection system according to claim 3, characterized in that: The exception handling module is also used to determine the cause of power failure during power failure protection; The abnormality processing module detects the internal voltage value of the charging pile, and if the internal voltage value is normal, it is determined that the power is off due to battery reasons, and prompts the display screen to replace the battery; If the internal voltage value is detected to be abnormal, it is determined that the power is off due to power supply reasons, and a prompt to check the power supply line is displayed on the display screen.

5. The household charging pile charging control and protection system according to claim 1, characterized in that: It also includes a remote control terminal for receiving and saving the charging time or charging fee preset by the user; A charging module, connected to the remote control terminal for calculating the corresponding charging time upon receiving the charging fee set by the user, and further for calculating the corresponding charging fee upon receiving the charging time set by the user; The charging status monitoring module is communicatively connected with the billing module, and is also used to generate a charging satisfaction signal to cut off the power output when the monitored actual charging time reaches the charging time based on the charging time calculated by the billing module.

6. The household charging pile charging control protection system according to claim 1, characterized in that: It also includes a power outage warning module, which is used to send a power outage warning prompt to the user terminal at a preset time in advance before the power outage; A power-off delay module, which is in communication with the power-off warning module and is used to send a selection of extending the charging time to the user terminal after receiving the power-off warning prompt; The charging status monitoring module is in communication connection with the power-off delay module. When the user at the user end chooses to extend the charging time, the charging status monitoring module extends the corresponding charging time.

7. The household charging pile charging control and protection system according to claim 1, characterized in that: It also includes a battery automatic protection module, which is used to protect the battery after power failure and charge and discharge it; A battery status detection unit, used to detect the real-time voltage, current and temperature parameters of the battery; The intelligent charge and discharge optimization module is connected to the battery status detection unit and the battery automatic protection module, and is used to calculate the optimal charge and discharge curve of the battery according to the parameter data number fed back by the battery status detection unit, and control the battery automatic protection module to charge and discharge the battery according to the optimal charge and discharge curve.

8. The household charging pile charging control and protection system according to claim 2, characterized in that: It also includes a temperature control module for controlling the temperature of the charging pile; When the temperature monitored by the temperature detection module is higher than the preset temperature threshold, the temperature control module starts the heat dissipation unit of the charging pile to dissipate heat from the charging pile; when the temperature monitored by the temperature detection module is lower than the preset temperature threshold, the temperature control module starts the heating unit of the charging pile to heat a preset part of the charging pile.

9. The household charging pile charging control protection system according to claim 1, characterized in that: It also includes a photovoltaic charging module, which is used to convert light energy into electrical energy to provide electrical energy for the charging pile. The charging status monitoring module preferentially uses the electrical energy provided by the photovoltaic charging module for charging.

10. The household charging pile charging control and protection system according to claim 1, characterized in that: It also includes a charging mode selection module for facilitating users to select different charging modes, including normal mode, fast mode and energy-saving mode. The charging status monitoring module is also used to determine charging parameters and power-off conditions according to the charging mode selected by the user.

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