Introduction to Protection Types of Electric Vehicle Charging Pile

Introduction to Protection Types of Electric Vehicle Charging Pile

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When you have a new energy vehicle, at the new energy charging station, park the vehicle in the specified new energy charging parking space, and plug in a suitable power cord for the car. The general charging market ranges from 30 minutes to 20 hours, depending on the speed of the power cord and the battery endurance of the electric vehicle. Generally, slow charging is much safer than fast charging.

On weekdays, even if you don't drive often, you should charge the car regularly and regularly, which will protect the life of the battery. Next, let me introduce the types of electric vehicle charging pile protection.

Overcurrent protection: Electronic equipment basically has a rated current. Exceeding the rated current will burn out the equipment. After the current exceeds the set current, it will automatically cut off the power to protect the mainboard and chip of the device from being burned out and prevent the device from malfunctioning.

Short circuit protection: Short circuit of the equipment will not only damage the power supply, but even cause a fire in severe cases. Once a short circuit is found, the electric vehicle charging pile will be powered off immediately to protect the equipment.

Leakage protection: The leakage accident generally occurs during operation. Although a small current has no effect in a short time, it will cause great harm to the human body in a long time. The leakage protection system will recover the residual current, but it is difficult to recover if the current is too large. In this case, the current should be cut off immediately to ensure the safety of people and equipment.

Overvoltage protection: It mainly protects the power supply line of electric vehicle charging piles. When the voltage exceeds the predetermined maximum value, it will immediately control the voltage to reduce or directly cut off the power supply; common overvoltage devices include discharge tubes, diodes and varistors. Major charging pile merchants The actual selection can be made according to the protection level of your own charging pile.

Undervoltage protection: Undervoltage is generally caused by a short circuit, which will cause damage to the lines and equipment of the electric vehicle charging pile. Undervoltage protection is to protect the electric vehicle charging pile from damage when the voltage is reduced to a critical voltage after the equipment is cut off for various reasons, which can prolong the service life of the electric vehicle charging pile.

Emergency stop protection: The emergency stop switch is a switch that the operator makes to stop the operation of the electric vehicle charging pile in an emergency when it is judged that the equipment is faulty but does not automatically stop. It is an emergency operation that can be made immediately in an emergency that cannot be judged.

Charging gun plug-in protection: During the operation of the operator, the leakage current during the plug-in and plug-in process of the charger is recovered and processed to avoid harm to the human body.

Lightning and surge protection: It is especially important for outdoor electric vehicle charging piles. When a peak current or voltage is suddenly generated in the electrical circuit or communication line due to external interference, the surge protector can conduct and shun the current in a very short period of time, thereby avoiding the damage of the surge to other equipment in the circuit; outdoor charging piles Lightning surge protection mostly uses ceramic gas discharge tubes as primary protection, and connects or varistors to release residual voltage.

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