Efficient electromagnetic induction wireless charging system for new energy automobile

Abstract

The invention relates to the technical field of new energy automobile charging, and discloses an efficient electromagnetic induction wireless charging system for a new energy automobile. The system can receive and analyze vehicle battery state information in real time through the charging control module and automatically adjust the output power of the transmitting module according to the charging power requirement and time, the transmitting module efficiently transmits electric energy to the receiving end from the transmitting end according to the electromagnetic induction principle, high-frequency alternating current is generated according to instructions, power transmission is optimized, and the charging efficiency is improved. The receiving module is responsible for converting the received alternating current into direct current to ensure that the energy loss in the charging process is reduced to the minimum, the data acquisition and analysis module integrates data from all the modules to generate a detailed charging report, and the information visualization module visually displays the charging state and the analysis result through a liquid crystal screen. By means of the overall design, the technical problems of a traditional wireless charging system in the aspects of charging efficiency and monitoring capacity are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and particularly to an efficient electromagnetic induction wireless charging system for new energy vehicles. Background Art

[0002] With the global emphasis on renewable energy and environmentally friendly transportation, the popularity of new energy vehicles has been continuously increasing. The wired charging method restricts the charging convenience to a certain extent. When charging, users need to frequently plug and unplug the charging cable, and the distribution and charging speed of charging piles also become key factors affecting the user experience. In order to improve the charging convenience and efficiency, wireless charging technology has gradually attracted attention. Through the principle of electromagnetic induction, the wireless charging system can achieve the electrical energy transmission between the vehicle and the charging pile without physical connection, thus simplifying the charging process and improving the user experience.

[0003] Existing wireless charging systems still have deficiencies in aspects such as charging efficiency, real-time monitoring, and data analysis. They often cannot real-time monitor key data such as the vehicle battery status, charging power, and charging time, resulting in the inability to effectively adjust the charging power during the charging process and reducing the wireless charging efficiency. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides an efficient electromagnetic induction wireless charging system for new energy vehicles. The charging control module can receive and analyze the vehicle battery status information in real time, automatically adjust the output power of the transmitting module according to the charging power demand and time, ensure the charging process is efficient and safe. The transmitting module uses the principle of electromagnetic induction to efficiently transmit electrical energy from the transmitting end to the receiving end, generates high-frequency alternating current according to the instruction, optimizes the power transmission, and improves the charging efficiency. The receiving module is responsible for converting the received alternating current into direct current, and real-time monitoring the AC-to-DC conversion efficiency and the current charging power, ensuring that the energy loss during the charging process is minimized. The data acquisition and analysis module integrates the battery status, charging power, and environmental data from each module, calculates the cumulative charging time and energy, and generates a detailed charging report. The information visualization module intuitively displays the charging status and analysis results through a liquid crystal screen, enabling users to grasp the charging situation at any time. This overall design not only improves the intelligent level of charging and the user experience, but also effectively solves the technical problems of the traditional wireless charging system in charging efficiency and monitoring ability.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solutions: An efficient electromagnetic induction wireless charging system for new energy vehicles, comprising a charging control module, a transmitting module, a receiving module, a data acquisition and analysis module, and an information visualization module;

[0008] The charging control module is used to receive vehicle battery status information, including voltage, current, and temperature, and automatically set and adjust the output power of the transmitting module according to the charging power requirement and charging time, and generate a current command. At the same time, it calculates the charging power and charging efficiency for monitoring the charging process;

[0009] The transmitting module transmits electrical energy from the transmitting end to the receiving end through the principle of electromagnetic induction, generates high-frequency alternating current according to the instructions of the charging control module, generates an alternating magnetic field through the coil and calculates the magnetic field intensity. At the same time, it calculates the output frequency for optimizing power transmission, and transmits electrical energy to the receiving module;

[0010] The receiving module receives the electrical energy transmitted by the transmitting module, converts the alternating current into direct current, and calculates the AC-to-DC conversion efficiency and the current charging power for real-time monitoring of the charging status;

[0011] The data acquisition and analysis module collects battery status data, charging power data, charging time, and environmental data from the charging control module, the transmitting module, and the receiving module, calculates the cumulative charging time and cumulative charging energy, and generates a charging report and sends it to the information visualization module;

[0012] The information visualization module is used to display the detailed information of the charging report on the liquid crystal screen.

[0013] Preferably, the calculation formula of the charging power is as follows:

[0014] P = V * I

[0015] In the formula, P represents the charging power, V represents the battery voltage, and I represents the current.

[0016] Preferably, the calculation formula of the charging efficiency is as follows:

[0017]

[0018] In the formula, η represents the charging efficiency, P out represents the output power, P in represents the input power.

[0019] Preferably, the calculation formula of the magnetic field intensity is as follows:

[0020]

[0021] In the formula, B represents the magnetic field strength, μ0 represents the magnetic permeability of vacuum, which is 4π * 10 -7 Tm / A, Is represents the current passing through the coil, r represents the distance from the center of the transmitting coil, and π represents the pi, taking 3.14.

[0022] Preferably, the calculation formula of the output frequency is as follows:

[0023]

[0024] In the formula, f represents the output frequency, and T represents the time of one charging cycle.

[0025] Preferably, the formula for converting alternating current to direct current is as follows:

[0026]

[0027] In the formula, V DC represents the output DC voltage, and V AC represents the effective value of the input AC voltage.

[0028] Preferably, the calculation formula of the conversion efficiency from AC to DC is as follows:

[0029]

[0030] In the formula, η AC / DC represents the conversion efficiency from AC to DC, P DC represents the output DC power, and P AC represents the input AC power.

[0031] Preferably, the calculation formula of the current charging power is as follows:

[0032] P current =V DC *I DC

[0033] In the formula, P current represents the current charging power, V DC represents the current DC voltage, and I DC represents the current DC current.

[0034] Preferably, the calculation formula of the cumulative charging time is as follows:

[0035] T total =T1 + T2 +... + T n

[0036] In the formula, T total represents the cumulative charging time, T1, T2,..., T nIndicates the time of each charge. Preferably, the calculation formula for the cumulative charging energy is as follows:

[0037] E total = P avg * T total

[0038] In the formula, E total represents the cumulative charging energy, P avg represents the average charging power, and T total represents the cumulative charging time.

[0039] Compared with the prior art, the present invention provides an efficient electromagnetic induction wireless charging system for new energy vehicles, having the following beneficial effects:

[0040] Through the charging control module, the present invention can receive and analyze the vehicle battery status information in real time, automatically adjust the output power of the transmitting module according to the charging power demand and time, ensure the charging process is efficient and safe. The transmitting module uses the principle of electromagnetic induction to efficiently transmit electrical energy from the transmitting end to the receiving end, generates high-frequency alternating current according to the instruction, optimizes power transmission, and improves charging efficiency. The receiving module is responsible for converting the received alternating current into direct current, and monitors the AC-to-DC conversion efficiency and the current charging power in real time to ensure that the energy loss during the charging process is minimized. The data acquisition and analysis module integrates the battery status, charging power, and environmental data from each module, calculates the cumulative charging time and energy, and generates a detailed charging report. The information visualization module intuitively displays the charging status and analysis results through a liquid crystal screen, enabling users to grasp the charging situation at any time. This overall design not only improves the intelligent level of charging and the user experience, but also effectively solves the technical problems of the traditional wireless charging system in terms of charging efficiency and monitoring ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the system flow of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] Aiming at the deficiencies of the existing wireless charging system in terms of charging efficiency, real-time monitoring, and data analysis, which lead to the inability to effectively adjust the charging power during the charging process and reduce the wireless charging efficiency, a high-efficiency electromagnetic induction wireless charging system for new energy vehicles is proposed. Please refer toFigure 1 , the system includes a charging control module, a transmitting module, a receiving module, a data acquisition and analysis module, and an information visualization module;

[0044] The charging control module plays a crucial role in the wireless charging system of new energy vehicles. It is responsible for receiving and monitoring the status information of the vehicle battery in real time, including the voltage, current, and temperature of the battery. Through this data, the charging control module can evaluate the current charging demand of the battery and automatically adjust the output power of the transmitting module according to the preset charging power demand and charging time to achieve an efficient charging process;

[0045] In this process, the module first calculates the charging power using the formula:

[0046] P = V * I

[0047] where P is the charging power (unit: watt, W), V is the battery voltage (unit: volt, V), and I is the current (unit: ampere, A). Next, the charging control module also calculates the charging efficiency (η) to ensure the efficiency of the charging process. The calculation formula for the charging efficiency is:

[0048]

[0049] Here, P out is the output power received by the battery, P in is the input power provided by the charging system. In addition, the charging control module generates a current command based on the real-time status of the battery to ensure that the power output by the transmitting module matches the charging demand of the vehicle. This dynamic adjustment not only improves the charging efficiency but also effectively prevents potential risks such as overcharging or overheating. By monitoring the charging process, the module can calculate the charging power and charging efficiency in real time to ensure the safety and stability of the charging process;

[0050] The transmitting module plays a key role in the wireless charging system of new energy vehicles. It seamlessly transmits electrical energy from the transmitting end to the receiving end through the principle of electromagnetic induction. The core of this process is that the transmitting module generates high-frequency alternating current according to the real-time instructions of the charging control module. The selection of this frequency is optimized for power transmission based on the charging demand and environmental factors to ensure the charging efficiency. Here, the calculation of the output frequency f is carried out through the formula:

[0051]

[0052] where T is the period of the high-frequency alternating current. By optimizing the output frequency, the transmitting module can effectively reduce the energy loss during the transmission process, thus ensuring the charging efficiency;

[0053] During the process of generating high-frequency alternating current, the transmitting module forms an alternating magnetic field (B) through a coil, which is also closely related to the efficiency of power transmission. The magnetic field strength can be calculated using the following formula:

[0054]

[0055] Where B is the magnetic field strength (unit: Tesla, T), μ0 is the permeability of free space (approximately 4π * 10 -7 Tm / A), Is is the current passing through the coil (unit: Ampere, A), and r is the distance from the center of the transmitting coil (unit: meter, m). This calculation can help the transmitting module determine the optimal current output under different environmental conditions to optimize the power transmission effect;

[0056] When high-frequency alternating current passes through the coil, the alternating magnetic field created by the transmitting module will induce in the receiving end, and then effectively transfer the electric energy to the receiving module. Therefore, the design and performance of the transmitting module directly affect the efficiency and reliability of the charging process;

[0057] Through these technologies and numerical calculations, the transmitting module can not only accurately control the power transmission process, but also minimize energy loss to achieve the goal of efficient charging. Its efficient power transmission and management capabilities provide an advanced solution for the wireless charging technology of new energy vehicles, ensuring that users can enjoy a fast and convenient charging experience;

[0058] The receiving module is responsible for receiving the alternating current power transmitted from the transmitting module and effectively converting it into direct current (DC). The key first step in this process is to convert the alternating current (AC) into direct current through a rectifier circuit. This conversion process usually includes a combination of a rectifier and a filter to ensure the stability of the output voltage and the smoothness of the current;

[0059] When performing the AC-to-DC conversion, the receiving module will first calculate the converted DC voltage. The formula commonly used for this calculation is:

[0060]

[0061] In this formula, V AC is the root mean square (RMS) value of the AC voltage, and V DC represents the final output DC voltage (unit: Volt, V), which is crucial for ensuring the effectiveness of vehicle battery charging. Through this calculation, the receiving module can monitor and confirm the output voltage in real time, and then adjust the operation of the system to achieve the best charging effect;

[0062] In addition to voltage conversion, the receiving module also calculates the AC-to-DC conversion efficiency (η AC / DC ) in real time. The formula for its calculation is:

[0063]

[0064] In this formula, P DC represents the DC power output by the receiving module (in watts, W), while P AC is the input AC power (in watts, W). Calculating the conversion efficiency is very important because it can indicate the effectiveness of the rectification process and energy loss. When the conversion efficiency is high, it means that most of the input AC electrical energy is successfully converted into DC electricity, ensuring the efficient progress of the charging process. Correspondingly, if the conversion efficiency is low, it will result in energy waste, thus affecting the overall charging performance;

[0065] In addition, the receiving module also calculates the current charging power (PcurrentPcurrent), and the formula used is:

[0066] P current = V DC * I DC

[0067] where I DC is the DC current flowing through the receiving module (in amperes, A). By monitoring the current charging power in real time, the receiving module can not only ensure the safety and stability of the battery during the charging process, but also provide timely feedback to the user and the charging control module to ensure that the charging system can adjust the charging parameters in a timely manner;

[0068] Through the effective reception and conversion of transmitted electrical energy and combined with real-time data monitoring, the receiving module significantly improves the efficiency and stability of the wireless charging process of new energy vehicles. The implementation of these technologies ensures the safety of charging and the convenience of users;

[0069] The data acquisition and analysis module plays an important role in information integration and analysis in the wireless charging system of new energy vehicles. Through close cooperation with the charging control module, the transmitting module and the receiving module, this module collects a variety of key information in real time, including battery status data (such as voltage, temperature and charging current), charging power data, charging time and environmental data (such as temperature and humidity). The comprehensive analysis of these data provides a solid foundation for subsequent charging management and optimization;

[0070] During the analysis process, the data acquisition and analysis module calculates the cumulative charging time and cumulative charging energy. These two indicators are crucial for evaluating the efficiency and effectiveness of the charging process. The calculation formula for the cumulative charging time is:

[0071] T total = T1 + T2 +... + T n

[0072] Among them, T n represents the time of each charging. By accurately recording the duration of each charging, the module can evaluate the continuity and stability of charging;

[0073] The calculation of the cumulative charging energy is carried out through the following formula:

[0074] E total = P avg * T total

[0075] In this formula, P avg is the average charging power calculated during the charging process, and T total is the cumulative charging time. By calculating the cumulative charging energy, the module can provide the energy usage situation during the charging process, helping users better understand the charging efficiency and energy consumption;

[0076] After completing the data analysis, the data acquisition and analysis module will generate a detailed charging report and send it to the information visualization module. The main function of the information visualization module is to display the detailed information of the charging report in an intuitive way on the liquid crystal screen, using graphics and charts to present key data such as the charging status, power change, charging time, and energy consumption. In this way, users can quickly obtain the real-time information of the charging process and conduct an intuitive evaluation of the charging efficiency and system performance;

[0077] The information visualization module can also display important indicators such as charging efficiency through charts and dashboards, helping users understand the energy flow and conversion efficiency during the charging process. Through this technical means, the entire system not only improves the intelligent level of charging management but also enhances the user experience, making the charging process of new energy vehicles more transparent, controllable, and efficient;

[0078] In summary, the system not only realizes the comprehensive monitoring and analysis of the charging process but also provides users with easy-to-understand charging status information. This overall design not only improves the intelligent level of charging and the user experience but also effectively solves the technical problems of traditional wireless charging systems in terms of charging efficiency and monitoring ability.

[0079] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency electromagnetic induction wireless charging system for new energy vehicles, characterized in that: It includes a charging control module, a transmitting module, a receiving module, a data acquisition and analysis module, and an information visualization module; The charging control module is used to receive vehicle battery status information, including voltage, current and temperature, and automatically set and adjust the output power of the transmitting module according to the charging power requirement and charging time and generate current instructions, while calculating the charging power and charging efficiency for monitoring the charging process; The transmitting module transmits electric energy from the transmitting end to the receiving end through the principle of electromagnetic induction, generates high-frequency alternating current according to the instructions of the charging control module, generates an alternating magnetic field through the coil and calculates the magnetic field strength, calculates the output frequency for optimizing power transmission, and transmits electric energy to the receiving module; The receiving module receives the electric energy transmitted by the transmitting module, converts the alternating current into direct current, and calculates the conversion efficiency from AC to DC and the current charging power for real-time monitoring of the charging status; The data acquisition and analysis module collects battery status data, charging power data, charging time and environmental data from the charging control module, the transmitting module and the receiving module, calculates the cumulative charging time and the cumulative charging energy, and generates a charging report and sends it to the information visualization module; The information visualization module is used to display detailed information of the charging report on the liquid crystal screen.

2. According to claim 1, a high-efficiency electromagnetic induction wireless charging system for new energy vehicles is characterized in that: The calculation formula of the charging power is as follows: P=V*I In the formula, P represents charging power, V represents battery voltage, and I represents current.

3. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 2, characterized in that: The calculation formula of the charging efficiency is as follows: In the formula, η represents the charging efficiency, P out Indicates output power, P in Indicates input power.

4. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 3 is characterized in that: The calculation formula of the magnetic field strength is as follows: In the formula, B represents the magnetic field strength, and μ0 represents the vacuum magnetic permeability, which is 4π*10 -7 Tm / Is, Is represents the current passing through the coil, r represents the distance from the center of the transmitting coil, and π represents pi, which is 3.

14.

5. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 4, characterized in that: The calculation formula of the output frequency is as follows: In the formula, f represents the output frequency, and T represents the time of a charging cycle.

6. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 5, characterized in that: The formula for converting AC to DC is as follows: In the formula, V DC Indicates the output DC voltage, V AC Indicates the effective value of the input AC voltage.

7. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 6, characterized in that: The calculation formula of the AC to DC conversion efficiency is as follows: In the formula, η AC / DC Indicates the conversion efficiency from AC to DC, P DC Indicates the output DC power, P AC Indicates the input AC power.

8. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 7, characterized in that: The calculation formula of the current charging power is as follows: P current =V DC *I DC In the formula, P current Indicates the current charging power, V DC Indicates the current DC voltage, I DC Indicates the current DC current.

9. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 8, characterized in that: The calculation formula of the cumulative charging time is as follows: T total =T1+T2+...+T n In the formula, T total Indicates the cumulative charging time, T1, T2, ..., T n Indicates the time of each charging.

10. The high-efficiency electromagnetic induction wireless charging system for new energy vehicles according to claim 9, characterized in that: The calculation formula of the accumulated charging energy is as follows: E total =P avg *T total In the formula, E total Indicates the accumulated charging energy, P avg represents the average charging power, T total Indicates the cumulative charging time.

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