Theoretically, the satisfaction of new energy owners with the construction of charging network should be in direct proportion to the reduction of vehicle pile ratio. However, in practice, the car pile ratio is not the only measure to solve the "energy supplement anxiety". The application of new energy vehicles in the "last mile" is much more complex than the 1:1 car pile ratio. Whether the layout of the charging pile is reasonable and the operation efficiency can meet the needs of users are the key points that really affect the use experience of the charging pile. "Charging for an hour, waiting in line for several hours". Every holiday, many electric vehicle owners are embarrassed by long lines in the high-speed service area. Although this is just a contradiction in the charging demand in a specific period of time, these special experiences, after being rendered by social media, often magnify the energy supplement anxiety of new energy vehicles, and trigger the public opinion call for "accelerating the construction of charging piles and reducing the ratio of charging piles". The so-called vehicle pile ratio refers to the proportion of the number of new energy vehicles and charging piles. For a long time, the vehicle pile ratio is an important indicator to measure whether the charging demand of new energy vehicles can be met. The lower the ratio is, the more sufficient the charging pile is, and the charging is more convenient. Since the start of China's new energy automobile industry, continuously reducing the vehicle pile ratio has become the common pursuit of the industry. It should be said that the vehicle pile ratio in China decreased year by year before last year. However, with the rapid increase of sales of new energy vehicles in the past two years, the vehicle pile ratio has begun to increase. According to the data released by the China Electric Vehicle Charging Infrastructure Promotion Alliance, as of the end of August this year, the cumulative number of charging infrastructure nationwide was 4.315 million, while the number of new energy vehicles was 10.99 million. This means that the vehicle pile ratio is 2.5:1, far from 1:1, that is, a new energy vehicle is equipped with a charging pile. This widely mentioned proportion target is derived from the Guidelines for the Development of Electric Vehicle Charging Infrastructure jointly issued by the National Development and Reform Commission and other four departments in 2015. However, in my opinion, the target of this car pile ratio is calculated based on the technology development at that time, so it is not necessary to focus on it now. More important is to strengthen the reasonable layout and use efficiency of the charging pile. Theoretically, the satisfaction of new energy owners with the construction of charging network should be in direct proportion to the reduction of vehicle pile ratio. However, in practice, the car pile ratio is not the only measure to solve the "energy supplement anxiety". The application of new energy vehicles in the "last mile" is much more complex than the 1:1 car pile ratio. For example, in some expressway service areas, some charging piles have already become fault piles due to varying degrees of damage. In many cities, some charging piles have no power connection, and some charging piles have problems and can't contact the service provider. Netizens laugh about "charging devices". Although some charging posts can be used, their efficiency is not high. According to the 2021 Monitoring Report on Charging Infrastructure in Major Cities in China, there are 22 cities in 25 large cities nationwide, and the average time utilization rate of a single public charging pile is less than 10%. There are some objective reasons for this phenomenon. In the early years, the once windy charging pile industry attracted many enterprises. Although the enterprises built charging stations, they failed to reach the expected profit target and finally gave up
Edit：Lijialang Responsible editor：MuMu
Source：chinanews.com
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