Intelligent control charging protection module for new energy automobile

Abstract

The utility model discloses an intelligent control charging protection module for a new energy automobile. The power supply driving unit is connected with an external power supply, and the power supply driving unit converts external input 220V alternating current into direct current voltage needed by working of all parts and supplies power. The temperature detection unit, the electric leakage detection protection unit and the AC signal acquisition unit are respectively connected with the MUC main control unit, the temperature detection unit acquires temperature data of a charging loop and sends the temperature data of the charging loop to the MUC main control unit, and the electric leakage detection protection unit acquires leakage current data between a zero line and a live line in the charging loop and sends the leakage current data to the AC signal acquisition unit. The leakage current data is sent to the MUC main control unit, and the alternating current signal acquisition unit acquires alternating current voltage data and current data input by an external power supply and sends the alternating current voltage data and the current data to the MUC main control unit; the output module comprises an output control unit, and the output control unit is connected with the MUC main control unit. According to the utility model, the charging loop can be closed in time according to the abnormal state.

Description

Technical fields:

[0001] This utility model belongs to the field of protection technology for charging modules of new energy vehicles, and specifically relates to an intelligent control charging protection module for new energy vehicles. Background technology:

[0002] New energy vehicles are a green transportation tool with very broad development prospects. In order to better provide energy replenishment for new energy vehicles, charging piles or charging guns are important basic supporting facilities for new energy vehicles.

[0003] Existing charging guns often experience issues such as overheating, leakage, and abnormal input current or voltage during the charging process of new energy vehicles. Failure to promptly disconnect the charging circuit can easily damage the charging gun or the charging module of the new energy vehicle. Therefore, designing a device to protect the charging gun during charging is a problem that needs to be solved.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility model content:

[0005] The purpose of this utility model is to provide an intelligent control charging protection module for new energy vehicles, thereby overcoming the defects in the prior art.

[0006] To achieve the above objectives, this utility model provides an intelligent control and charging protection module for new energy vehicles, including a MCU main control unit, a power drive unit, an input acquisition module, and an output module. The power drive unit is connected to an external power source and converts the 220V AC power input from the external power source into the DC voltage required for the operation of the MCU main control unit, the input acquisition module, and the output module, and supplies power to them. The input acquisition module includes a temperature detection unit, a leakage current detection and protection unit, and an AC signal acquisition unit, which are respectively connected to the MCU main control unit. The temperature detection unit collects charging circuit temperature data and sends it to the MUC main control unit. The leakage current detection and protection unit collects leakage current data between the neutral and live wires in the charging circuit and sends it to the MUC main control unit. The AC signal acquisition unit collects AC voltage and current data from the external power supply and sends them to the MUC main control unit. The output module includes an output control unit connected to the MUC main control unit. The MUC main control unit controls the output control unit to switch the charging circuit on and off based on the data collected by the input acquisition module.

[0007] Preferably, in the technical solution, the MUC main control unit adopts an STM32F103 chip. The MUC main control unit is connected to the power drive unit through pin 1, the temperature detection unit through pin 11, the leakage current detection and protection unit through pin 22, the AC signal acquisition unit's transmit and receive pins through pins 8 and 9 respectively, and the output control unit's K1 and K2 control terminals through pins 24 and 23 respectively.

[0008] Preferably, in the technical solution, the temperature detection unit is a PTC thermistor, the power supply drive unit is powered by the PTC thermistor, and the PTC thermistor is connected to the MUC main control unit through pin 11.

[0009] Preferably, in the technical solution, the leakage current detection and protection unit includes an RV4145 chip and a zero-sequence current transformer. The zero-sequence current transformer passes between the neutral wire and the live wire. The zero-sequence current transformer is connected to pins 2 and 3 of the RV4145 chip. Pin 5 of the RV4145 chip is connected to pin 22 of the MUC main control unit.

[0010] Preferably, in the technical solution, the output module includes an LED status indicator unit. The MUC main control unit is connected to the red light indicator pin 7B, green light indicator pin 4B, and blue light indicator pin 1B of the LED status indicator unit through pins 19, 20, and 21, respectively. The LED status indicator unit is used to display various normal or abnormal states.

[0011] Preferably, in the technical solution, the output module includes a 4G communication unit, and the MUC main control unit is connected to the transmit pin and receive pin of the 4G communication unit through pins 13 and 14 respectively, and the 4G communication unit communicates with the user terminal.

[0012] Preferably, in the technical solution, the input acquisition module further includes a vibration detection unit. The MUC main control unit is connected to the vibration detection unit through pin 25 to detect the vibration data received by the charging circuit. The MUC main control unit sends an alarm signal to the user terminal through the 4G communication unit based on the vibration data.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By detecting temperature, leakage current, AC voltage, and current data of the charging circuit, abnormal conditions in the charging circuit can be detected, and the charging circuit can be shut down in a timely manner to ensure that the charging gun or the charging module of the new energy vehicle is not damaged due to abnormal conditions. Attached image description:

[0015] Figure 1 This is a block diagram illustrating the structural principle of the intelligent control charging protection module for new energy vehicles of this utility model.

[0016] Figure 2 This is the circuit diagram of the power drive unit of this utility model;

[0017] Figure 3 This is the circuit diagram of the MUC main control unit of this utility model;

[0018] Figure 4 This is the circuit diagram of the temperature detection unit of this utility model;

[0019] Figure 5 This is the circuit diagram of the leakage current detection and protection unit of this utility model;

[0020] Figure 6 This is the circuit diagram of the AC signal acquisition unit of this utility model;

[0021] Figure 7 This is the circuit diagram of the output control unit of this utility model;

[0022] Figure 8 This is the circuit diagram of the LED status indicator unit of this utility model;

[0023] Figure 9 This is the circuit diagram of the 4G communication unit of this utility model;

[0024] Figure 10 This is the circuit diagram of the vibration detection unit of this utility model. Detailed implementation method:

[0025] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0026] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0027] like Figure 1 As shown, a smart control charging protection module for new energy vehicles includes a main control unit (MUC) 102, a power drive unit 101, an input acquisition module, and an output module. The power drive unit 101 is connected to an external power supply 111. The power drive unit 101 converts the 220V AC power input from the external power supply 111 into the DC voltage required for the operation of the MUC main control unit 101, the input acquisition module, and the output module, and supplies power accordingly. Figure 2As shown; the input acquisition module includes a temperature detection unit 103, a leakage current detection and protection unit 105, an AC signal acquisition unit 106, and a vibration detection unit 109. The temperature detection unit 103, the leakage current detection and protection unit 105, the AC signal acquisition unit 106, and the vibration detection unit 109 are respectively connected to the MUC main control unit 102; the output module includes an output control unit 107, an LED status indicator unit 104, and a 4G communication unit 108. The output control unit 107, the LED status indicator unit 104, and the 4G communication unit 108 are respectively connected to the MUC main control unit 102. The 4G communication unit 108 is connected to the user terminal 110 for communication. The output control unit 107 is connected to the new energy vehicle charging module 112.

[0028] like Figure 3 As shown, the MUC main control unit 102 uses an STM32F103 chip. The MUC main control unit 102 is connected to the power drive unit 101 via pin 1. The temperature detection unit 103 is a PTC thermistor. The power drive unit 101 supplies power to the PTC thermistor. The PTC thermistor is connected to the MUC main control unit 102 via pin 11. Figure 4 As shown, the temperature detection unit 103 collects the charging circuit temperature data and sends it to the MUC main control unit 102; the leakage current detection and protection unit 105 includes an RV4145 chip and a zero-sequence current transformer HT1. The zero-sequence current transformer HT1 passes between the neutral wire and the live wire. The zero-sequence current transformer HT1 is connected to pins 2 and 3 of the RV4145 chip. The power drive unit 101 supplies power to the RV4145 chip. Pin 5 of the RV4145 chip is connected to pin 22 of the MUC main control unit. Figure 5 As shown, the leakage current detection and protection unit 105 collects leakage current data between the neutral and live wires in the charging circuit and sends the leakage current data to the MUC main control unit 102; the MUC main control unit 102 is connected to the transmit pin and receive pin of the AC signal acquisition unit 106 through pins 8 and 9 respectively, as shown. Figure 6 As shown, the AC signal acquisition unit 106 acquires the AC voltage and current data input from the external power supply 111 and sends the AC voltage and current data to the MUC main control unit 102; the MUC main control unit 102 is connected to the K1 control terminal and K2 control terminal of the output control unit 107 through pins 24 and 23 respectively, as shown. Figure 7 As shown, the MUC main control unit 10 controls the output control unit 107 to switch the charging circuit on and off based on the data collected by the input acquisition module.

[0029] like Figure 8As shown, the MUC main control unit 102 is connected to the red light indicator pin 7B, green light indicator pin 4B, and blue light indicator pin 1B of the LED status indicator unit 104 via pins 19, 20, and 21, respectively. The LED status indicator unit is used to display various normal or abnormal states, such as: green light during normal charging, red light on for 2 seconds and off for 3 seconds during leakage abnormality, and RGB three-color light running in a loop during vibration abnormality.

[0030] like Figure 9 As shown, the MUC main control unit 102 is connected to the transmit pin and receive pin of the 4G communication unit 108 through pins 13 and 14 respectively, and the 4G communication unit 108 is connected to the user terminal 110 for communication.

[0031] like Figure 10 As shown, the MUC main control unit 102 is connected to pin 2 of the vibration detection unit 109 via pin 25 to detect the vibration data received by the charging circuit. Based on the vibration data, the MUC main control unit 102 sends an alarm signal to the user terminal 110 via the 4G communication unit 108 to indicate that the charging circuit has been subjected to strong vibration caused by external force.

[0032] By detecting the temperature, leakage current, AC voltage, and current data of the charging circuit, the MUC main control unit 102 compares the detected data with the set values. When the detected data exceeds the set values, an abnormal state of the charging circuit is detected. The unit then sends a command to the output control unit 107 to shut down the charging circuit in a timely manner, ensuring that the charging gun or the new energy vehicle charging module is not damaged due to the abnormal state.

[0033] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A smart control and charging protection module for new energy vehicles, characterized in that: The system includes a main control unit (MUC), a power drive unit, an input acquisition module, and an output module. The power drive unit is connected to an external power source and converts the 220V AC power input from the external power source into the DC voltage required for the operation of the MUC, input acquisition module, and output module. The input acquisition module includes a temperature detection unit, a leakage current detection and protection unit, and an AC signal acquisition unit, all of which are connected to the MUC. The temperature detection unit collects charging circuit temperature data and sends it to the MUC. The leakage current detection and protection unit collects leakage current data between the neutral and live wires in the charging circuit and sends it to the MUC. The AC signal acquisition unit collects AC voltage and current data from the external power source and sends them to the MUC. The output module includes an output control unit connected to the MUC. The MUC controls the output control unit to switch the charging circuit on and off based on the data collected by the input acquisition module.

2. The intelligent control charging protection module for new energy vehicles according to claim 1, characterized in that: The MUC main control unit uses an STM32F103 chip. The MUC main control unit is connected to the power drive unit through pin 1, the temperature detection unit through pin 11, the leakage current detection and protection unit through pin 22, the AC signal acquisition unit's transmit and receive pins through pins 8 and 9 respectively, and the output control unit's K1 and K2 control terminals through pins 24 and 23 respectively.

3. The intelligent control charging protection module for new energy vehicles according to claim 2, characterized in that: The temperature detection unit is a PTC thermistor, the power supply drive unit is powered by the PTC thermistor, and the PTC thermistor is connected to the MUC main control unit through pin 11.

4. The intelligent control charging protection module for new energy vehicles according to claim 2, characterized in that: The leakage current detection and protection unit includes an RV4145 chip and a zero-sequence current transformer. The zero-sequence current transformer passes between the neutral and live wires and is connected to pins 2 and 3 of the RV4145 chip. Pin 5 of the RV4145 chip is connected to pin 22 of the MUC main control unit.

5. The intelligent control charging protection module for new energy vehicles according to claim 2, characterized in that: The output module includes an LED status indicator unit. The MUC main control unit is connected to the red indicator pin 7B, green indicator pin 4B, and blue indicator pin 1B of the LED status indicator unit via pins 19, 20, and 21, respectively. The LED status indicator unit is used to display various normal or abnormal states.

6. The intelligent control charging protection module for new energy vehicles according to claim 2, characterized in that: The output module includes a 4G communication unit. The MUC main control unit is connected to the transmit and receive pins of the 4G communication unit via pins 13 and 14, respectively. The 4G communication unit communicates with the user terminal.

7. The intelligent control charging protection module for new energy vehicles according to claim 6, characterized in that: The input acquisition module also includes a vibration detection unit. The MUC main control unit is connected to the vibration detection unit through pin 25 to detect the vibration data received by the charging circuit. Based on the vibration data, the MUC main control unit sends an alarm signal to the user terminal through the 4G communication unit.

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