Pay attention to the current status of charging pile interface technology

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Pay attention to the current status of charging pile interface technology [Copy link]

This article will introduce two national standard charging pile interfaces - AC charging pile interface and DC charging pile interface, and introduce related interface technologies around the commonly used AC charging interface. Friends who want to know should not miss it~ 1. Basic introduction to charging pile interface Compared with traditional oil vehicles, pure electric vehicles have many advantages, which are not listed here one by one, but one of the troublesome things about pure electric vehicles is that they need to consider the length of charging time and battery life. There are many compromise solutions in the field of hybrid power, such as plug-in and extended-range, which do not require a larger battery capacity, shorten the charging waiting time compared to pure electric vehicles (and use gasoline/diesel to increase the range). In the field of pure electric vehicles, it is difficult to unilaterally optimize the charging time or battery life. You cannot have your cake and eat it too, because the battery life is related to the charging rate. Generally speaking, the higher the charging and discharging rate, the smaller the number of cycles. In order to ensure that the number of battery cycle charging can be between 800 and 1000, the charging rate should usually be between 0.5C and 0.25C, using the national grid for power supply and using the on-board charger to charge the power battery. This is a slow charging solution, and the supporting public facilities are AC charging piles.

AC charging pile interface

In order to cope with emergencies, it is hoped that the battery can be fully charged to 80% of the maximum capacity within 15 to 30 minutes. The corresponding charging rate should be between 2C and 4C. This is a fast charging solution, and the supporting public facilities are DC charging piles. DC charging piles are more harmful to batteries, and the cost of replacing batteries will increase. Therefore, if it is not a very urgent situation, the use of DC charging piles should be minimized (rich people can do it at will).

DC charging pile interface

The principles of charging piles at home and abroad are similar, but the appearance is slightly different, as follows:

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