Slow charging terminal is a common new energy vehicle charging terminal, also known as home power charging port. This charging port is characterized by its relatively slow charging speed, which usually takes several hours to fully charge. Slow charging terminals usually contain a number of different terminals, each with its own specific function and role.
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Taking pure electric vehicles as an example, their slow charging ports usually have 7 terminals, the specific meanings are as follows:
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CC: Charge connection confirmed. The vehicle control device determines whether the vehicle plug is fully connected to the vehicle socket by the resistance between the CC and PE (body ground).
CP: Charge control guide. The vehicle control device determines the maximum charging current supported by the current power supply device through the PWM duty cycle of CP (detection point 2).
L terminal: AC power supply (single-phase, three-phase). This involves different voltage and current specifications to suit different charging needs.
N Terminal: middle line (single-phase, three-phase). This is also to adapt to different charging environments and devices.
PE terminal: PGND cable. Used to ensure the safety of the charging process.
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In addition, some slow charge ports also contain spare terminals, such as NC1 and NC2, which are also used for AC power (three-phase). The presence of these terminals allows slow charging to have greater flexibility and adaptability in design and function.
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It should be emphasized that fast charge and slow charge cannot be turned around in theory, because their terminals are defined differently. Therefore, when choosing the charging method, it is necessary to determine whether to use fast or slow charging according to the actual situation and charging needs of the vehicle.
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In summary, slow charging terminals play an important role in the charging process of new energy vehicles, which not only ensure the efficiency and safety of charging, but also make the charging process more convenient and flexible.