5 Things That Affect Your Charging Speed

5 Things That Affect Your Charging Speed

6月 29, 2023

In the age of the electric revolution, time isn’t just money; it’s miles. As we pivot from the gas pump to the charging station, one question races ahead – how fast can we power up for the journey?

Imagine this: your bags are packed, the open road beckons, but your battery indicator casts a shadow on your plans. Now the actual race begins – against time.

The speed at which your electric vehicle charges is not just a matter of convenience but of necessity. This article will cut to the chase and shed light on the five key factors affecting your charging speed.

We’ll navigate the world of charging stations and onboard chargers, delve into the health of your battery, explore the role of specific vehicle models, and the impact of the environment on your charging speed.

Fasten your seat belts as we accelerate your understanding of charging speed – turning your electric vehicle journey from a waiting game to a smooth ride!

Two articles want to share with you: What is a dc ev charger & what is an ac ev charger?

How long does it take to charge an electric car?

The time it takes to charge an electric car can vary significantly and depends on several factors, including the capacity of the battery, the speed of the charging point, the model of the vehicle, and how depleted the battery is.

Here are some general estimates:

Slow charging (using a standard home outlet, around 2.3 kW)

This is the most basic and slowest form of charging. A typical electric car with a 60 kWh battery takes about 25-30 hours to charge from empty to full.

Fast charging (using a home or public charger, 7-22 kW)

These chargers are typically found in homes with dedicated electric vehicle supply equipment or at public charging stations. They can charge an electric car with a 60 kWh battery in 4-6 hours.

Rapid charging (DC charging, 50-350 kW)

These are the fastest chargers typically found at dedicated public charging stations. A typical electric car with a 60 kWh battery can charge 80% in 20-60 minutes using a rapid charger.

Remember, the above times are estimates and can vary depending on specific car models, the exact power output of the charging point, and how depleted the battery is. It’s always best to refer to your vehicle’s manual or manufacturer’s advice for the most accurate information.

Why does EV charging speed matter?

The charging speed of EVs is directly related to people’s travel experience. You can understand the impact of EV charging speed on our daily life from the following angles.

1. Faster charging means electric vehicles can take better advantage of off-peak electricity rates without leaving their owners without a car for too long. It also means that public charging points can serve more vehicles daily.

2. If an electric vehicle can be charged quickly, it offers the owner more flexibility. They can charge at various points during the day without interrupting their schedule.

3. Waiting for hours while the vehicle charges is impractical for long-distance trips. Faster charging speeds can make taking an electric vehicle on a road trip easier, reducing the time spent waiting for the car to charge at charging stations.

4. One of the barriers to electric vehicle adoption is the concern over how long it takes to charge an EV. Improving charging speed may alleviate range anxiety and make electric vehicles a more attractive option, hence promoting the switch to sustainable transportation.

In conclusion, the speed of EV charging directly impacts the practicality and convenience of owning an electric vehicle. Therefore, improvements in charging rates are a crucial focus for manufacturers and infrastructure developers in the EV sector.

What are the factors that affect charging?

Battery Capacity

Battery capacity, measured in kilowatt-hours (kWh), essentially refers to the energy storage capacity of an EV battery. Given the same power supply, it directly impacts charging speed as a larger capacity battery will require more time to set than a smaller one fully.

The differences in charging times for batteries of different sizes are significant. For instance, a small 24 kWh battery may charge fully in 4-6 hours from a typical home charging station, while a larger 100 kWh battery could take 20 hours or more. It’s important to note this estimation is linear and dependent on the charger’s power output.

To maximize the charging efficiency, try to maintain your battery level between 20% and 80%, as charging tends to slow down when the battery’s state of charge is very low or high to protect the battery. Using a charger with appropriate power output for your battery size can also increase efficiency.

I have another article about the battery weight; click here to learn more.

Battery and Charge

Charging Station Power

Home charging stations usually offer lower power output (3.7 kW to 7.4 kW) compared to public charging stations, which can provide fast charging (up to 50 kW) or even ultra-fast charging (up to 350 kW). This results in slower charging times at home.

Charging station power directly determines the maximum rate your EV battery can charge. The higher the power output, the faster the charging speed, given that the vehicle’s onboard charger can handle the supplied power.

Choosing the right charging station should be based on your usage pattern. A home charging station is likely sufficient if you primarily use your EV for daily commutes and can charge overnight. However, for long trips, using fast public charging stations is beneficial.

Onboard Charging Technology

An onboard charger converts the AC power from the charging station into DC power to charge the battery. The capacity of the onboard charger can limit charging speed.

Onboard chargers have varying capacities. Some vehicles may handle up to 7 kW, while others may handle 11 kW, 22 kW, or more. The charging speed will be limited to the lower value between the charging station’s power output and the onboard charger’s capacity.

Regularly update your vehicle’s software to ensure the onboard charging technology works optimally. Also, when buying a new EV, consider your charging needs and whether the onboard charger’s capacity meets those needs.

Temperature Conditions

Temperature impacts the efficiency of the chemical reactions within the battery, thus affecting charging speed. Both scorching and cold temperatures may slow down charging.

The optimum conditions for charging are generally at moderate temperatures, often around 20-25°C (68-77°F).

If possible, park and charge your vehicle in a garage that can protect it from extreme weather conditions. Some EVs also have thermal management systems to condition the battery, which helps in severe weather but consumes some energy.

Temperature contrasts cold and heat weather minimal thermometer symbol 3D rendering illustration.

Battery Health

As batteries age, their capacity to hold a charge diminishes, and they might charge more slowly. This is a gradual process that occurs over the years.

To maintain battery health, avoid charging your battery to 100% or depleting it completely. These extremes can stress the battery and accelerate its degradation.

Regular maintenance checks and using charging equipment that is in good condition can help prolong battery life. Follow your vehicle manufacturer’s guidance on battery care and maintenance.

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Conclusion

In closing, understanding the factors influencing your EV’s charging speed is essential in optimizing your vehicle’s performance and longevity.

The battery capacity, the power output of the charging station, the ability of the onboard charging technology, the environmental temperature, and the overall health of the battery all play significant roles. It is not enough to merely plug in and hopes for the best; EV charger supplier or owners must take an active part in ensuring the effectiveness of our charging processes.

As we transition to a greener future, we must understand that shifting to electric vehicles involves more than just replacing gasoline with electricity. It requires a fundamental understanding of how these vehicles operate differently and how users must adapt their habits to serve our electric companions better.

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