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The introduction of DC charging pile overcurrent protection technology
Overcurrent protection of DC charging pile is one of the key technologies to ensure charging safety and stable operation of equipment. The following is a detailed introduction to the concept, role and working principle of DC charging pile overcurrent protection:
Main component
Concept:
Overcurrent protection refers to a protection mechanism that can automatically cut off the circuit or send an alarm signal when excessive current occurs in the circuit to protect the circuit and equipment from damage. In the DC charging pile, the overcurrent protection device can monitor the current during the charging process, and once the current is detected to exceed the set safe value, the protection measure will be activated .
Function:
Prevent equipment damage: Overcurrent may cause the internal components of the charging pile to overheat or even burn, and overcurrent protection can prevent this from happening.
Ensure charging safety: Overcurrent may cause battery damage or fire and other safety accidents, overcurrent protection can cut off the current in time to ensure charging safety.
Extended equipment life: Overcurrent protection helps extend the service life of charging piles by avoiding thermal and mechanical stresses caused by overcurrent.
Working Principle:
The working principle of overcurrent protection is mainly based on the following aspects:
Current monitoring: Real-time monitoring of the current of the charging pile through the built-in current sensor.
Threshold setting: Set a current threshold, when the current exceeds this value, the overcurrent protection device will be activated.
Fast response: The overcurrent protection device can achieve fast current limiting protection in a very short time (such as 150μs), and inhibit electrical fire accidents caused by excessive short-circuit current.
Current limiting protection: When overcurrent is detected, the protection device limits the current to prevent further current increase.
Disconnect the circuit: In some cases, overcurrent protection devices may disconnect the circuit directly to prevent further damage.
Sum up
Through these mechanisms, the overcurrent protection of DC charging pile ensures the safety and reliability of the charging process, and provides a safe charging environment for electric vehicle users.
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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