How many kilowatt-hours does a car slow charge in one hour?
2 Answers
Slow charging typically replenishes about 3 kWh per hour. When using a 6.6kW onboard charger, the charging rate increases to approximately 6 kWh per hour. Advantages of slow charging: Slow charging represents the safest and most conventional method for electric vehicles, also known as AC charging. The charging process generally requires 6-8 hours. However, factors such as charger power, battery charging characteristics, and temperature can cause variations in charging duration. The battery lifespan for ternary lithium battery vehicles reaches 6 years, while lithium iron phosphate battery vehicles can achieve 7 years without issues. Working principle of charging stations: Charging stations are categorized into AC charging stations (slow charging) and DC charging stations (fast charging). AC charging stations directly supply 220V grid electricity to electric vehicles for charging, similar to standard household air conditioner sockets which fully meet the requirements. Slightly more complex systems incorporate additional control switches and human-machine interface processing on this foundation.
I've been driving an electric car for a few years using slow charging, and I find calculating the electricity consumption per hour quite straightforward. Slow charging power typically ranges between 3.3 kW to 7.2 kW, which is what most home charging stations use. The amount of electricity charged per hour can be directly seen from the power rating. For example, if the power is 3.3 kW, then one hour of charging equals 3.3 kWh; if it's increased to 7.2 kW, then it's 7.2 kWh per hour. Actual electricity consumption is also influenced by the car's battery capacity. Smaller batteries, like those with 30 kWh capacity, can be charged relatively quickly, while larger ones, such as 70 kWh, may take longer. I think slow charging at home is quite cost-effective, with electricity costing just a few cents per kWh. Charging for a few hours overnight can cover a few hundred kilometers. Also, it's important to ensure the charging environment is well-ventilated and dry, and avoid cluttering the area with miscellaneous items.
