Why aren't AC charging stations eliminated because they charge much slower than DC charging stations?

Why aren't AC charging stations eliminated because they charge much slower than DC charging stations?

For new energy vehicle owners, the impact of charging stations on electric vehicles is as important as traditional fuel vehicles, and the user experience of charging stations directly affects the car experience.

At present, the charging piles for new energy vehicles in the market are mainly divided into DC piles and AC piles. There are significant differences in technical parameters such as current and voltage. The obvious difference is power: pure electric vehicles only need 1 to 2 hours to discharge through DC charging stations, while it takes 8 to 10 hours through AC charging stations.

As of November 2021 Among 20000 public charging stations, there are 45 DC charging stations 640000 and 60000 AC charging stations.

Why is the charging efficiency of communication charging stations low and accounting for a large proportion?

Firstly, due to the low technological threshold, the manufacturing cost of AC charging stations is relatively low; Secondly, DC charging piles should be matched with three-phase 380 V power supply departments and require separate approval of voltage, while AC charging piles only require single-phase 220V ordinary household electricity to support voltage. Compared with the need to coordinate land and grid resources for the construction of DC charging piles, the investment and construction restrictions of AC charging piles are much smaller.

Due to low cost and fast installation speed, in the era of horse racing enclosure, many enterprises invested in the construction of a large number of low-power AC charging piles to quickly occupy the market, leading to the proliferation of AC charging piles.

However, for new energy vehicle owners, their love for communication stations lags far behind its proportion. According to the White Paper on Charging Behavior of Chinese Electric Vehicle Users released by the China Charging Alliance in early December last year, over 99% of car owners prefer to choose DC fast charging for new energy vehicles, while less than 1% choose AC charging stations.

Since DC charging stations are the trend, why do I still say that AC charging stations cannot be eliminated?

Firstly, the current charging stations are mainly centrally constructed, and the advantages of DC stations in terms of power are self-evident. In the future, private charging stations will become more common, with lower costs and convenient installation of AC charging stations, making them more suitable for private car owners.

According to the "Energy saving and New Energy Vehicle Technology Roadmap 2.0" released by the Chinese Society of Automotive Engineers, it is expected that by 2025, the proportion of slow charging output will reach over 70%. The achievement of this goal largely depends on the construction of private charging stations. Due to limitations in community parking spaces and power grid capacity, the construction of private piles is currently progressing slowly. However, with the inclusion of charging piles in new infrastructure construction and the introduction of relevant national policies, the construction of private piles may bring explosive growth. At this point, the price is more friendly and the installation of exchange piles is more convenient.

Secondly, AC charging stations are beneficial for cutting peak values and filling valleys, with minimal impact on the power grid. DC piles have high power and fast charging, which have a greater impact on the power grid. If new energy vehicle owners use high-power DC charging stations, one can imagine the burden on the power grid. On the contrary, if you have one, if you have a pile, you don't have to spend energy looking for one to charge. Charging during the rest time after work can not only reduce the burden on the power grid, but also use time of use electricity prices to lower charging costs.

Afterwards, communication charging stations are more battery friendly and beneficial for extending battery life. Although every battery produced by a reputable manufacturer undergoes testing to ensure its normal lifespan, experts still recommend that new energy vehicle owners prioritize slow charging when conditions permit, especially if they lack confidence in their vehicle's battery management system. After all, battery damage caused by overcharging is irreversible, and the cost of replacing the battery is really high.

Of course, when building a private charging station, it is necessary to choose a well-known brand of charging station to ensure stable charging current and safer charging process
Palabras clave calientes: Fast charging AC Column Charging Post AC Charging Pile