不仅国庆长假，新能源车主每次充电都搞不清楚这个问题

Core Viewpoint - The article discusses the discrepancy between the high voltage (800V) promoted by car manufacturers and the charging power (kW) displayed on charging stations, highlighting the importance of understanding charging efficiency and consumer perception in the electric vehicle (EV) market [1][3][6]. Group 1: Charging Efficiency and Cost - The article emphasizes the cost advantage of electric vehicles (EVs) during long-distance travel, with an example showing a vehicle consuming approximately 14 kWh per 100 km, leading to a travel cost of around 17 yuan per 100 km based on current charging prices [3][4]. - It notes that a vehicle with a 78 kWh battery can achieve a range of about 450 km under optimal conditions, showcasing the efficiency of EVs compared to traditional vehicles [3][4]. Group 2: Technical Aspects of Charging - The article explains the fundamental physics of charging, stating that charging power (W) is determined by both voltage (V) and current (I), and that higher voltage can lead to more efficient charging with less heat generation [4][6]. - It highlights that increasing voltage is a more efficient method for achieving high charging power compared to increasing current, which can lead to significant heat loss and safety concerns [6][7]. Group 3: Marketing Strategies - The preference for promoting "800V" by car manufacturers is attributed to a combination of technical, marketing, and consumer psychology factors, positioning it as a symbol of advanced technology in the EV market [6][8]. - The article points out that the term "800V high voltage platform" does not necessarily mean that vehicles can actually charge at 800V, as there is a common industry practice where any voltage above 400V can be labeled as such [11][12]. Group 4: Industry Standards and Future Developments - The article discusses a recent government initiative aimed at promoting the development of high-power charging infrastructure, with a target of over 100,000 high-power charging stations by the end of 2027 [19][20]. - It emphasizes the need for standardized power ratings in the industry, which would enhance consumer understanding and protect their rights by providing clear performance indicators rather than vague marketing terms [21][22].