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EV charging: the difference between AC and DC عرض

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Staying ahead of the curve

Another key difference between AC and DC charging is the charging curve. With AC wallbox ev charger, the power flowing to an EV represents a flat line (so, not much of a curve at all). This is due to the relatively small onboard charger that can only receive a limited power spread over longer periods.

DC EV charger, on the other hand, forms a degrading charging curve. This is due to the EV's battery initially accepting a quicker flow of power but gradually asking for less as it reaches full capacity.

As an example, imagine a glass as the EV’s battery, a water bottle as a DC charging station, and the water inside that bottle as the power. At first, you can quickly fill the glass with water, but you’ll need to slow down as you get to the top, so the glass doesn’t overflow.

The same logic can be applied for DC fast and ultra-fast charging. This is why EVs require less power once the battery is around 80 per cent full, hence the degrading curve you see below.

Other factors that can affect charging speeds include:

Want to learn more about our AC and DC charging stations?

We provide a range of charging stations as part of our end-to-end electric vehicle charging solutions for businesses around the world. For a complete list of tech specs and use cases, as well as more information, take a look at our EV chargers for every business looking to electrify its operation.

Electric vehicles have lots in common with gasoline-powered cars—room for four-plus passengers, range of several hundred miles, good safety—plus that one big difference: recharging with a plug at versus refueling from a pump. We’ve all pumped gas and know it’s a five- to 10-minute process; we suspect recharging takes longer and we know there are far fewer charging stations than the 125,000 U.S. public gas stations.

Here’s a look at key aspects of choosing the right EV charging accessories, installing it properly and best practices for using EV charging equipment at home.

Do You Need to Buy an EV Charger When One Comes Free?

Every electric car comes standard with a portable EV charger. (This thick cable that plugs into a wall outlet and the car counts as a charger.) However, every manufacturer provides a different unit, with varying levels of charging capabilities. In some cases, the same manufacturer provides different standard charging equipment depending on which of its EV offerings you purchase or lease.

Some of these supplied chargers are powerful and can fully recharge your EV overnight. These are called Level 2 chargers because they need to be plugged into a 240-volt outlet. (Memory aid: for Level 2, think Level 240 volts. Even if that’s not why it’s called Level 2.)

 residential and commercial buildings is the dominant place for the foreseeable future and will remain key to scaling the industry. Yet without upgrading buildings’ electrical infrastructure, there simply will not be enough accessible EV chargers to satisfy demand. Further complicating matters, EV charging at scale requires careful planning of a building’s electrical-distribution system as well as local electric-grid infrastructure.To make AC integrated EV charger more accessible and affordable, urban planners, building developers, and electrical-equipment suppliers must integrate charging infrastructure into standard building-design plans. In this article, we detail the effects of expanding

 residential and commercial buildings is the dominant place for the foreseeable future and will remain key to scaling the industry. Yet without upgrading buildings’ electrical infrastructure, there simply will not be enough accessible EV chargers to satisfy demand. Further complicating matters, EV charging at scale requires careful planning of a building’s electrical-distribution system as well as local electric-grid infrastructure.To make AC integrated EV charger more accessible and affordable, urban planners, building developers, and electrical-equipment suppliers must integrate charging infrastructure into standard building-design plans. In this article, we detail the effects of expanding


 
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