Three Major Factors Affecting Ev Charging Station Charging Speed

With the growing pursuit of environmentally friendly vehicles and strong government support, new energy vehicles are becoming increasingly popular. We often hear people talking about them, and with that comes the question of charging speed, as it directly impacts the user experience. Let's look at the factors that influence this speed:

1. Ev Charging Station Charging Speed

Simply put, the higher the output power of an Ev charging station, the shorter the charging time. However, currently, Ev Charging Station charging stations are divided into AC and DC charging stations, which we can discuss separately. Regarding AC charging stations, most slow-moving Air-cooled Super Charging Station or charging boxes in China use 220V AC charging, with input and output currents of 16A or 32A respectively. The theoretical output power can reach 3.3kW or 6.6kW respectively. Considering a 10% power loss, the AC charging speed is still relatively slow.

2. The Impact of On-board Chargers on Vehicle Charging: During the entire AC/AC battery charging process, the on-board charger participates in the current conversion process. Generally, AC current is converted into AC power by the on-board charger and stored as energy in the power lithium battery. Therefore, it is believed that the output power of the on-board charger should be matched with the AC/AC output power, typically around 3-3 kW. Even with Air-cooled Super Charging Station using higher output power, the input current is only around 16 A, and the charging speed is not fast. However, it is foreseeable that with the increase in the power consumption of new energy vehicle lithium batteries, the output power of future on-board chargers should be above 6 kW to meet customer requirements for charging speed. During a survey of Air-cooled Super Charging Station, it was discovered that the Senova new energy vehicle charger could achieve 220V/32A. Further investigation revealed that the on-board charger output power could reach 6 kW.

4. The disadvantages of lithium-ion batteries: In Air-cooled Super Charging Station with a fixed input and output power, the larger the battery capacity, the shorter the charging time. This is similar to a simple math problem: when pouring water into a pool through a pipe of the same size, the larger the pool, the longer it takes to fill. Furthermore, the energy density of lithium-ion batteries is generally higher than that of polymer lithium-ion batteries. Therefore, for the same vehicle series, if the required driving range is the same, a lithium-ion battery will definitely require less energy than a polymer lithium-ion battery, and its charging speed will naturally be faster.