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Dc charging pile power switch chip start module

Main component

Concept:

The starting module of the DC charging pile power switch chip is an important part of the charging pile, which is specially responsible for activating and initializing the power switch chip at the beginning of the charging process to ensure the smooth and safe start of the power conversion process. The startup module usually integrates the functions of soft start, pre-charge, system self-test and communication initialization, which is the key technology to ensure the reliability and efficiency of the charging system.

Function:

The starting module plays multiple roles in the DC charging pile, and its main roles include:

1. Soft start: By gradually increasing the output voltage and current, reduce the current impact when starting, protect the battery and charging equipment.

2. Pre-charge: Before charging, raise the battery pack voltage to a certain level to avoid low charging efficiency or damage caused by too low voltage.

3. System self-test: Check the status of key components during startup to ensure that the charging system works normally and without fault.

4. Communication initialization: Establish a communication connection with the vehicle's battery management system (BMS) to ensure the accurate exchange of charging parameters and status information.

5. Safety protection: When abnormal conditions are detected, such as overvoltage, undervoltage, overtemperature, etc., cut off the power supply in time to protect the charging equipment and battery.

Working Principle:

The working principle of the startup module can be divided into the following steps:

1. Power activation: When the charging pile receives the command to start charging, the startup module first activates the power switch chip to prepare for power conversion.

2. Soft start control: The start module gradually increases the output voltage and current of the power switch chip by controlling the PWM signal to achieve soft start and reduce the impact on the battery.

3. Pre-charging process: If necessary, the starting module will pre-charge the battery pack through the pre-charging circuit to ensure that the battery pack voltage reaches a safe level.

4. System self-test: The startup module will carry out self-test program to check the status of key components such as power switch chip, drive circuit, and protection circuit to ensure the normal operation of the system.

5. Communication establishment: The startup module is connected to the BMS through the vehicle communication interface, ready to exchange charging parameters and status information, and realize intelligent charging control.

Sum up

The design of the starting module needs to take into account the input voltage range of the charging pile, the requirements of the output voltage and current, the characteristics of the battery and other factors to ensure that the entire charging process can provide stable starting and efficient power conversion.

Through the introduction of the above concepts, functions and working principles, it can be seen that the starting module of the DC charging pile power switch chip is a key component to ensure the safe and efficient operation of the charging system. It not only improves the charging speed and charging efficiency, but also enhances the reliability and intelligence of the system, and is an indispensable part of the modern electric vehicle charging infrastructure.

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.

Extended reading

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