Automobile charging pile capable of intelligently adjusting charging power based on user scene

Abstract

The invention provides an automobile charging pile capable of intelligently adjusting charging power based on a user scene, which belongs to the technical field of electric automobile charging equipment and comprises a power adjusting module, a control module, a communication module, a display module and a charging interface. A user can manually control the full charging time of an automobile battery according to own requirements, and the charging pile can automatically adjust the charging power according to the battery capacities of different automobile types and the current electric quantity by automatically receiving the battery parameters of the electric automobile, so that diversified charging requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging equipment, and in particular to an automobile charging pile capable of intelligently adjusting charging power based on user scenarios. Background Art

[0002] As the world attaches great importance to environmental protection and sustainable development, electric vehicles, as a clean energy means of transportation, are rapidly growing in market share. The popularity of electric vehicles depends on a sound charging infrastructure. Charging piles are key charging equipment, and their performance and business functions directly affect the user experience.

[0003] In modern life, users have a variety of charging scenarios. When shopping in a mall, watching a movie in a cinema, or parking temporarily for urgent matters, users generally hope to complete charging just at the end of the activity. There is a strong demand for precise control of charging time. In addition, the battery parameters of different electric vehicle models on the market vary greatly. In the existing technology, charging piles with fixed power cannot adjust the power according to user time requirements and battery parameters of different models. Although charging piles with simple power adjustment function can adjust the power according to the battery status, they cannot meet the user's needs for flexible setting of charging time, and lack intelligence and personalization in adapting to battery parameters of different models. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a car charging pile that can intelligently adjust the charging power based on user scenarios, allowing users to manually control the car battery full time according to their own needs, avoiding being notified to move the car due to charging completion in scenarios such as shopping in a mall, watching a movie in a theater, or temporarily parking for urgent matters. At the same time, it is adaptable to batteries of different models to meet flexible and efficient smart charging experience.

[0005] The technical solution of the present invention is:

[0006] A car charging pile capable of intelligently adjusting charging power based on user scenarios, comprising:

[0007] Power regulation module: DC-DC converter is used to accurately adjust the output power according to the control signal, and the adjustment range is P min ~P max , where P min is the minimum output power, P max is the maximum output power.

[0008] Control module: It uses a high-performance microprocessor, which is responsible for various information from all parties. After precise calculation and processing, it sends a control signal to the power regulation module. At the same time, the module has a data storage function and can record historical charging data for analyzing various charging conditions and preventing charging pile offline problems, thereby optimizing the charging strategy.

[0009] Communication module: supports 4G communication protocol, used for data interaction with user mobile phone APP, WeChat applet, management platform, etc., receives user instructions, and feeds back the working status of the charging pile to the user. After the electric vehicle is connected to the charging pile, the charging pile connects to the battery management system (BMS) of the electric vehicle through the CAN bus, and follows the CAN communication protocol to quickly and stably receive real-time voltage, current, temperature, state of charge, and health status data from the electric vehicle battery.

[0010] Display module: It uses a liquid crystal display to display the real-time working status of the charging pile, charging power, estimated charging end time and other information, so that users can understand the charging status in real time.

[0011] Charging interface: Compatible with common electric vehicle charging interface standards on the market to ensure that electric vehicles of different models can be charged.

[0012] Among them, the innovative contents of the present invention include the following points:

[0013] 1. Information interaction and automatic acquisition

[0014] The charging pile supports 4G communication protocol, exchanges data with user mobile phone APP, WeChat applet, management platform, etc., receives user instructions, and realizes remote control and management. After the electric vehicle is connected to the charging pile, it can automatically receive the current battery power S transmitted by the battery management system (BMS) of the electric vehicle. current and battery capacity C. This process involves the adaptation and optimization of the CAN communication protocol to ensure accurate information and fast transmission.

[0015] 2. Accurate calculation and dynamic adjustment of charging power

[0016] Control module according to Calculate the theoretical power P initial , combined with the battery charging efficiency coefficient η, the corrected charging power P is obtained corrected =P initial / η, and finally adjust the charging pile power range (P min ~P max ) determines the final charging power P. The power regulation module uses an advanced DC-DC converter, which can accurately adjust the output power according to the signal sent by the control module to meet the needs of different models and users.

[0017] 3. Real-time monitoring and dynamic adjustment

[0018] During the charging process, the control module monitors the battery charging voltage U and charging current I in real time, and real =U×I to calculate the real-time charging power P real . Compare P realIf the deviation exceeds the allowable range ΔP, the control signal of the power regulation module is adjusted in time to ensure the safe and efficient charging process. At the same time, the battery power S is monitored in real time. now ,according to Calculates remaining charging time and updates the display.

[0019] Furthermore,

[0020] The specific working steps are as follows:

[0021] S1. Automatically obtain electric vehicle battery information

[0022] After the electric vehicle is connected to the charging pile, the charging pile connects to the battery management system BMS of the electric vehicle through the CAN bus, follows the CAN communication protocol, and automatically receives the current battery power S transmitted by the electric vehicle. current and battery capacity C, and obtain the current time T now ;

[0023] S2. User inputs required information

[0024] The user enters the estimated departure time T through the mobile APP or WeChat applet leave ;

[0025] S3, Data Transfer

[0026] The communication module converts the user input T leave And the automatically acquired S current , C, T now The information is transmitted to the control module;

[0027] S4. The control module calculates the charging power

[0028] First, calculate the theoretical power required to fully charge the electric vehicle battery during the user's expected departure time.

[0029] Then, considering the energy loss in the actual charging process and combining the battery charging efficiency coefficient η (0<η≤1), the corrected charging power P is obtained. corrected =P initial / η;

[0030] Finally, according to the power adjustment range limit of the charging pile, the final charging power P must meet the following requirements: corrected <P min When P = P min When P corrected >P max When P = P max When P min ≤P corrected ≤P max When P = Pcorrected ;

[0031] S5. Output power adjustment

[0032] The control module sends a control signal to the power control module according to the finally determined charging power P to adjust the output power of the charging pile;

[0033] S6. Real-time monitoring and adjustment

[0034] During the charging process, the control module monitors the battery charging voltage U and charging current I in real time, and real =U×I to calculate the real-time charging power P real ; By comparing the real-time charging power P real If the deviation exceeds the allowable range ΔP, that is, |P real -P|>ΔP At that time, the control module adjusts the control signal of the power regulation module according to the deviation, so that the charging power returns to the vicinity of the set value. Real-time monitoring of the battery power of the electric vehicle, calculation of the remaining charging time, and update of the estimated charging end time on the display module.

[0035] Beneficial Effects of the Invention

[0036] 1. Users can freely set the charging time according to their own activities to avoid being notified to move the car due to charging completion, thus improving the user experience.

[0037] 2. By automatically receiving the battery parameters of electric vehicles, the charging pile can automatically adjust the charging power according to the battery capacity and current power of different models to meet diverse charging needs.

[0038] 3. Real-time monitoring and dynamic adjustment of charging power can keep the battery in the best charging state and improve charging efficiency.

[0039] 4. Connect with mobile phone APP or WeChat applet through the communication module to realize remote control and management, so that users can understand the working status and charging progress of the charging pile at any time and realize intelligent management. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] The present invention provides a car charging pile that can intelligently adjust the charging power based on user scenarios, which mainly includes the following points:

[0042] 1. Hardware structure and configuration

[0043] The unique hardware structure of the car charging pile that can intelligently adjust the charging power includes the combination of power regulation module, control module, communication module, display module and charging interface and their respective functional implementation. Among them, the specific DC-DC converter and its control method in the power regulation module are used to achieve precise power regulation. The communication module realizes information interaction through multiple communication protocols, including data transmission with the car BMS and user smart devices.

[0044] 2. Charging power calculation method and algorithm

[0045] A series of formulas and algorithms for calculating charging power based on the estimated departure time input by the user and the automatically acquired battery parameters, as well as the implementation logic of these algorithms in the control module, are used to monitor and dynamically adjust the formulas and control strategies used in the charging power process in real time.

[0046] 3. Intelligent charging control process

[0047] From automatically acquiring battery information after the electric car is connected to the charging station, to the user inputting the expected departure time, to the control module calculating and adjusting the charging power, to the intelligent control process of real-time monitoring and dynamic adjustment during the entire charging process.

[0048] The specific contents are as follows:

[0049] The main hardware components of the automobile charging pile in the present invention include a power regulation module, a control module, a communication module, a display module and a charging interface. The specific contents of each part are as follows:

[0050] Power regulation module: DC-DC converter is used to accurately adjust the output power according to the control signal, and the adjustment range is P min ~P max , where P min is the minimum output power, P max is the maximum output power.

[0051] Control module: It uses a high-performance microprocessor, which is responsible for various information from all parties. After precise calculation and processing, it sends a control signal to the power regulation module. At the same time, the module has a data storage function and can record historical charging data for analyzing various charging conditions and preventing charging pile offline problems, thereby optimizing the charging strategy.

[0052] Communication module: supports 4G communication protocol, used for data interaction with user mobile phone APP, WeChat applet, management platform, etc., receives user instructions, and feeds back the working status of the charging pile to the user. After the electric vehicle is connected to the charging pile, the charging pile connects to the battery management system (BMS) of the electric vehicle through the CAN bus, and follows the CAN communication protocol to quickly and stably receive real-time voltage, current, temperature, state of charge, and health status data from the electric vehicle battery.

[0053] Display module: It uses a liquid crystal display to display the real-time working status of the charging pile, charging power, estimated charging end time and other information, so that users can understand the charging status in real time.

[0054] Charging interface: Compatible with common electric vehicle charging interface standards on the market to ensure that electric vehicles of different models can be charged.

[0055] The method steps of the present invention include:

[0056] S1. Automatically obtain electric vehicle battery information

[0057] After the electric vehicle is connected to the charging pile, the charging pile connects to the battery management system (BMS) of the electric vehicle through the CAN bus, follows the CAN communication protocol, and automatically receives the current battery power S transmitted by the electric vehicle. current and battery capacity c, and obtain the current time T now .

[0058] S2. User inputs required information

[0059] The user enters the estimated departure time T through the mobile APP or WeChat applet leave .

[0060] S3, Data Transfer

[0061] The communication module converts the user input T leave And the automatically acquired S current , C, T now And other information is transmitted to the control module.

[0062] S4. The control module calculates the charging power

[0063] First, calculate the theoretical power required to fully charge the electric vehicle battery during the user's expected departure time.

[0064]

[0065] Then, considering the energy loss in the actual charging process and combining the battery charging efficiency coefficient η (0<η≤1), the corrected charging power P is obtained. corrected =P initial / η;

[0066] Finally, according to the power adjustment range limit of the charging pile, the final charging power P must meet the following requirements: corrected <P min When P = P min When P corrected >P max When P = P max When P min ≤P corrected ≤P max When P = P corrected .

[0067] S5. Output power adjustment

[0068] The control module sends a control signal to the power control module according to the finally determined charging power P to adjust the output power of the charging pile.

[0069] S6. Real-time monitoring and adjustment

[0070] During the charging process, the control module monitors the battery charging voltage U and charging current I in real time, and real =U×I to calculate the real-time charging power P real By comparing the real-time charging power P real If the deviation exceeds the allowable range ΔP, that is, when |P real When -P|>ΔP, the control module adjusts the control signal of the power regulation module according to the deviation, so that the charging power returns to the set value. At the same time, the battery power S of the electric vehicle is monitored in real time. now ,according to Calculate the remaining charging time t remain , and updates the estimated charging end time on the display module.

[0071] Car charging piles can connect and work with surrounding distributed energy sources (such as solar panels and small wind turbines). When distributed energy generates excess electricity, it can be used directly to charge electric vehicles, reducing dependence on the power grid. For example, charging piles in shopping mall parking lots can be connected to solar panels on the top of the parking lot. When there is sufficient sunlight, solar energy is used first for charging, which not only reduces electricity costs, but is also more environmentally friendly.

[0072] The intelligent fault diagnosis system is integrated in the charging pile to monitor the operating status of each component and circuit of the charging pile in real time. When an abnormality is detected, it can issue a warning message in time and send the fault information to the operation and maintenance personnel through the communication module. At the same time, the system can also automatically analyze the cause of the fault, provide solutions, shorten the maintenance time, and improve the reliability of the charging pile.

[0073] The above description is only a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A car charging pile that can intelligently adjust charging power based on user scenarios, characterized in that: include: Power regulation module: uses DC-DC converter to adjust output power according to control signal; Control module: It uses a high-performance microprocessor, which is responsible for all kinds of information from all parties. After calculation and processing, it sends control signals to the power regulation module. At the same time, the module has data storage function, records historical charging data, and is used to analyze various charging conditions and prevent charging pile offline problems, thereby optimizing charging strategies; Communication module: supports 4G communication protocol, used to interact with user mobile phone APP, WeChat applet, and management platform, receive user instructions, and feedback the working status of the charging pile to the user; Display module: used to display the real-time working status, charging power, and estimated charging end time of the charging pile, so that users can understand the charging status in real time; Charging interface: Compatible with the electric vehicle charging interface standards on the market to ensure that electric vehicles of different models can be charged.

2. The method according to claim 1, characterized in that After the electric vehicle is connected to the charging pile, the charging pile is connected to the electric vehicle's battery management system BMS through the CAN bus, and follows the CAN communication protocol to quickly and stably receive real-time voltage, current, temperature, state of charge and health status data from the electric vehicle battery.

3. The method according to claim 1, characterized in that The charging pile supports 4G communication protocol, interacts with user mobile phone APP, WeChat applet, and management platform for data, receives user instructions, and realizes remote control and management.

4. The method according to claim 1, characterized in that Control module according to Calculate the theoretical power P initial , combined with the battery charging efficiency coefficient η, the corrected charging power P is obtained corrected =P initial / η, and finally adjust the charging pile power range (P min ~P max ) determines the final charging power P, where P min is the minimum output power, P max is the maximum output power.

5. The method according to claim 4, characterized in that During the charging process, the control module monitors the battery charging voltage U and charging current I in real time, and real =U×I to calculate the real-time charging power P real ; Compare P real If the deviation exceeds the allowable range ΔP, the control signal of the power regulation module is adjusted in time.

6. The method according to claim 5, characterized in that Real-time monitoring of battery power S now ,according to Calculates remaining charging time and updates the display.

7. The method according to claim 6, characterized in that The specific working steps are as follows: S1. Automatically obtain electric vehicle battery information After the electric vehicle is connected to the charging pile, the charging pile connects to the battery management system BMS of the electric vehicle through the CAN bus, follows the CAN communication protocol, and automatically receives the current battery power S transmitted by the electric vehicle. current and battery capacity C, and obtain the current time T now ; S2. User inputs required information The user enters the estimated departure time T through the mobile APP or WeChat applet leave ; S3, Data Transfer The communication module converts the user input T leave And the automatically acquired S current , C, T now The information is transmitted to the control module; S4. The control module calculates the charging power First, calculate the theoretical power required to fully charge the electric vehicle battery during the user's expected departure time. Then, considering the energy loss in the actual charging process and combining the battery charging efficiency coefficient η (0<η≤1), the corrected charging power P is obtained. corrected =P initial / η; Finally, according to the power adjustment range limit of the charging pile, the final charging power P must meet the following requirements: corrected <P min When P = P min When P corrected >P max When P = P max When P min ≤P corrected ≤P max When P = P corrected ; S5. Output power adjustment The control module sends a control signal to the power control module according to the finally determined charging power P to adjust the output power of the charging pile; S6. Real-time monitoring and adjustment During the charging process, the control module monitors the battery charging voltage U and charging current I in real time, and real =U×I to calculate the real-time charging power P real ; By comparing the real-time charging power P real If the deviation exceeds the allowable range ΔP, that is, when |P real When -P|>ΔP, the control module adjusts the control signal of the power regulation module according to the deviation so that the charging power returns to near the set value.

8. The method according to claim 7, characterized in that Monitor the battery level of the electric vehicle in real time, calculate the remaining charging time, and update the estimated charging end time on the display module.

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