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The current/voltage monitoring and protection function in DC charging pile power management chip is introduced

Current/voltage monitoring and protection function in DC charging pile power management chip is the key technology to ensure charging safety and efficiency. Here's a breakdown of these features:

Main component

Current/voltage monitorin

1. Real-time monitoring: The power management chip monitors the voltage and current during the charging process in real time through the integrated sensor or external sensor, such as the INA219 sensor. This data is essential for controlling the charging process and ensuring safe charging.

2. Data acquisition: STM32 series microcontrollers with voltage and current sensors can collect real-time voltage, current and cumulative power consumption. These data are communicated with the metering module through serial transmission communication protocol to ensure the accuracy and real-time of the data.

Protection function

1. Overload protection: The DC charging pile has overload protection function, which can automatically disconnect the power supply when the current exceeds the safety threshold to prevent the circuit from overheating and damage.

2. Short circuit protection: The short circuit protection function can quickly cut off the power supply when a short circuit is detected to avoid equipment damage and potential fire risks.

3. Leakage protection: DC charging pile adopts high-performance leakage protection circuit, such as FM2147, for detecting whether there is leakage protection in the output. The new national standard GB/T18487.1-2023 also puts forward requirements for the detection and protection of DC leakage to avoid the safety hazards of DC residual current.

4. Overheat protection: Through temperature detection elements such as thermistors, DC charging piles can monitor the internal temperature, and once the temperature exceeds the preset value, the system will take measures to reduce the temperature or suspend the charge.

5. Insulation protection: The system ensures insulation safety during charging and prevents electrical failure caused by insulation damage through the insulation monitoring function.

Sum up

Through these current/voltage monitoring and protection functions, the DC charging pile power management chip ensures the safety and reliability of the charging process, while also improving the charging efficiency and user experience. The integrated application of these functions makes DC charging pile play an increasingly important role in modern electric vehicle charging facilities.

DC CHARGING PIlE SERIES

DC charging pile is an efficient charging facility for electric vehicles, which uses direct current (DC) to directly charge the vehicle battery, significantly reducing the charging time. Compared with traditional AC charging piles, DC charging piles are able to provide higher power output and can usually charge an EV to 80% of its capacity in 30 minutes, providing users with a convenient charging experience.

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