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Why do new energy vehicles use AC charging piles at this stage?
2022-08-01221Browse
New energy vehicle charging piles ensure charging safety, provide strong support for big data mining and refining, and promote the interconnection and intelligent service of charging facilities in China. At the same time, through the mobile app, users can enjoy convenient charging services, query the location, status and other information of charging piles in real time, and easily make charging appointments.
Why do new energy vehicles use AC charging piles at this stage?
1. I think what is important is that the DC power output from the DC charging pile is very large, hundreds of AMPS, which is very harmful to the service life of the rechargeable battery, and it is likely to reduce the battery life. At this stage, the rechargeable battery itself is a short board of the development trend of electric vehicles (including other machinery and equipment, such as electronic equipment on mobile phones). In other words, today's new batteries themselves are not very sound, and if the battery life is often lost, it will be insufficient for economic development.
2. The AC charging pile is convenient. It is installed in an underground parking lot or an electric vehicle charging station. The input side only needs to be connected from the power grid. The output is also for communication and exchange. It does not need rectifier equipment and other machinery and equipment, and the structure is simple.
3. From the expansion of rechargeable batteries, electric vehicles at this stage are not suitable for long-distance driving, so in most cases, electric vehicles can charge the batteries at a slow speed at work or at home at night.
4. The output power of the AC charging pile is small, so the impact of the battery charging of electric vehicles on the power grid is also small. If the operation scale of electric vehicles is further expanded in the future, the working pressure on the power grid will be increased if another battery with large DC power is charged. Naturally, this is also a difficult problem that must be considered in the future.
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