For new energy vehicle owners, the impact of charging piles on electric vehicles is as important as that on traditional fuel vehicles, and the use experience of charging piles directly affects the car experience.
At present, new energy vehicle charging piles on the market are mainly divided into DC piles and AC piles. There are large differences in technical parameters such as current and voltage. The most obvious difference is power: it only takes 1 to 2 hours for a pure electric vehicle to be fully discharged through a DC charging pile, while it takes 8 to 10 hours through an AC charging pile.
As of November 2021, a total of 1.092 million public charging piles have been reported by member units in the alliance, an increase of 30,000 from the previous month and a year-on-year increase of 57.1%. Among them, there are 450,000 DC charging piles, 646,000 AC charging piles, and 406 AC/DC integrated charging piles. From December 2020 to November 2021, the average monthly increase in public charging piles was about 33,000.
First, due to the low technical threshold, the manufacturing cost of AC charging piles is relatively low; secondly, DC charging piles should match the three-phase 380V voltage, and the power supply department needs to approve the voltage separately, while AC charging piles only need single-phase 220V ordinary household electricity to support the 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 the low cost and fast installation speed, in the era of horse racing enclosure, many companies invested in the construction of a large number of low-power AC charging piles to quickly occupy the market, resulting in AC piles blooming everywhere.
However, for new energy vehicle owners, their love for AC piles is far less than 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, more than 99% of car owners prefer to choose DC fast charging to charge new energy vehicles, and less than 1% choose AC charging piles.
First of all, the current charging piles are mainly built in a centralized manner, and the advantages of DC piles in terms of power are self-evident. In the future, private piles are common, the cost is lower, and the installation of AC charging piles is convenient, which is obviously more suitable for private car owners.
According to the "Energy-Saving and New Energy Vehicle Technology Roadmap 2.0" released by the China Society of Automotive Engineering, it is expected that by 2025, the proportion of slow charging output will reach more than 70%. The realization of this goal depends largely on the construction of private charging piles. Due to the limitations of community parking spaces and grid capacity, the construction of private piles is currently slow. 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 time, the price is more friendly and the installation of exchange piles is more convenient.
Secondly, AC charging piles are conducive to cutting peaks and filling valleys, and have less impact on the power grid. DC piles have high power and fast charging, and have a greater impact on the power grid. If new energy car owners use high-power DC piles to charge, you 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 to find a pile to charge. Charging during the break after get off work can not only reduce the burden on the power grid, but also use time-of-use electricity prices to reduce charging costs.
Finally, AC charging piles are more friendly to batteries and are conducive to extending battery life. Although every battery produced by a regular manufacturer will be professionally tested to ensure normal service life, experts still recommend that new energy vehicle owners give priority to slow charging when conditions permit, especially if they are not confident in the battery management system of their vehicle. 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 pile, you must choose a charging pile from a well-known brand to ensure a stable charging current and make the charging process safer.
TradeManager
Skype
VKontakte