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Your Position: Home - Energy - What is EV Power Charger and Why Do We Use Them?

What is EV Power Charger and Why Do We Use Them?

Electric Vehicle Charging Stations - Alternative Fuels Data Center

Electric Vehicle Charging Stations

Tens of thousands of electric vehicle (EV) charging stations are available in the United States. These charging stations are being installed in key areas throughout the country for public charging and workplace charging as a supplement to residential charging. Most EV owners do the majority of their charging at home.

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Station Locations

Find charging stations by location or along a route. Use the Advanced Filters to search for private and planned stations, as well as charging stations to match certain search criteria.

Charging Infrastructure Development

Consumers and fleets considering electric vehicles (EVs)—which include all-electric vehicles and plug-in hybrid electric vehicles (PHEVs)—need access to charging stations. For most drivers, this starts with charging at home or at fleet facilities. Charging stations at workplaces and public destinations may help bolster market acceptance by offering more flexible charging opportunities at commonly visited locations. Community leaders can find out more through EV readiness planning, including case studies of ongoing successes. The EVI-X Toolbox offers resources to estimate the charging infrastructure necessary to support typical daily travel in a given state or city, charging infrastructure needs to support long-distance travel (100 miles or more) along highway corridors in a given state or county, and to determine how EV charging will impact electricity demand.

Charging the growing number of EVs in use requires a robust network of stations for both consumers and fleets. The Alternative Fueling Station Locator allows users to search for public and private charging stations. Quarterly reports on EV charging station trends show the growth of public and private charging and assess the current state of charging infrastructure in the United States. Report new charging stations for inclusion in the Station Locator using the Submit New Station form. Suggest updates to existing charging stations by selecting “Report a change” on the station details page.

Learn more about state electrification planning and funding, including information about the Bipartisan Infrastructure Law. For a list of ENERGY STAR certified chargers, see the U.S. Environmental Protection Agency’s Product Finder list. A listing of charging infrastructure manufacturers with the ability to filter by product type/features is available on the Electric Drive Transportation Association’s GoElectricDrive website. For information on available charging infrastructure models:

  • Plug In America's PlugStar tool allows you to filter Level 2 residential chargers by price, cord length, and other features.

  • EPRI’s Vetted Product List focuses on commercial equipment and evaluates products against industry standards (e.g., safety listing by a Nationally Recognized Testing Laboratory, Open Charge Point Protocol capability) and government program requirements (e.g., Buy America, ENERGY STAR). Note this is not a comprehensive list of all models available, and charging equipment manufacturers pay a fee and apply to have their products vetted and listed. Where possible, EPRI verifies compliance to third-party certifications. If certifications are not provided, the fields on compliance are manufacturer-reported.

Charging Infrastructure Terminology

The charging infrastructure industry has aligned with a common standard called the Open Charge Point Interface (OCPI) protocol, which uses specific terminology to describe charging infrastructure: station location, EV charging port, and connector. The Alternative Fuels Data Center and the Station Locator use the following charging infrastructure definitions:

  • Station Location: A station location represents a physical place with one or more EV charging ports. Examples include a parking garage or a parking lot. In some cases like a large mall parking lot, there may be multiple station locations even if they have the same address.

  • EV Charging Port (also called a charger): An EV charging port provides power to charge only one vehicle at a time even though it may have multiple connectors. The unit that houses EV charging ports is sometimes called a charging post, which can have one or more EV charging ports. EV charging ports are also sometimes referred to as electric vehicle supply equipment (EVSE) ports.

  • Connector: A connector is what is plugged into a vehicle to charge it. Multiple connectors and connector types (such as CHAdeMO and CCS) can be available on one EV charging port, but only one vehicle will charge at a time. Connectors are sometimes called plugs.

To better understand terminology for networked stations and how data is collected and displayed in the Alternative Fueling Station Locator, see Electric Vehicle Charging Networks.

Charging Equipment

Charging equipment for EVs is classified by the rate at which the batteries are charged. Charging times vary based on how depleted the battery is (i.e., state-of-charge), how much energy it holds (i.e., capacity), the type of battery, the vehicle's internal charger capacity, and the type of charging equipment (e.g., charging level, charger power output, and electrical service specifications). The charging time can range from less than 20 minutes using DC fast chargers to 20 hours or more using Level 1 chargers, depending on these and other factors. When choosing equipment for a specific application, many factors, such as networking, payment capabilities, and operation and maintenance, should be considered.


Charging Infrastructure Procurement and Installation

Increasing available public and private charging equipment requires infrastructure procurement. Learn about how to successfully plan for, procure, and install charging infrastructure.

Charging Infrastructure Operation and Maintenance

Once charging infrastructure has been procured and installed, it must be properly operated and maintained. Learn about charging infrastructure operation and maintenance considerations.

Additional Charging Options

Another standard (SAE J) was developed in for higher rates of AC charging using three-phase power, which is common at commercial and industrial locations in the United States. Some components of the standard were adapted from the European three-phase charging standards and specified for North American AC grid voltages and requirements. In the United States, the common three-phase voltages are typically 208/120 V, 480/277 V. The standard targets power levels between 6 kW and 130 kW.

The Megawatt Charging System (MCS) is under development for DC charging up to 3.75 MW for short-dwell as well as lower power (<500 kW) long-dwell overnight charging for medium- and heavy-duty vehicle applications. A report looks at the requirements for charging stations that could support in-route charging for heavy-duty EVs. While 500 kW chargers are currently available from several charging manufacturers, the U.S. Department of Energy's Vehicle Technologies Office is pursuing research that will bridge the technology gaps associated with implementing these networks in the United States. A report highlights technology gaps at the battery, vehicle, and infrastructure levels. In particular, many EVs on the roads today are not capable of charging at rates higher than 200 kW. However, vehicle technology is advancing, and most new EV models will be able to charge at higher rates, enabling the use of faster charging. You can find additional resources on EV charging and advanced charging system research efforts from the National Renewable Energy Laboratory. For answers to frequently asked questions about the MCS and SAE J, see the fact sheet on Charging for Heavy-Duty Electric Trucks from Argonne National Laboratory.

Inductive Charging

What Is EV Charging & How Does it Work? - EvoCharge

One of the biggest concerns for electric vehicle (EV) owners is knowing when and how to charge their vehicle. It makes sense: The average American has spent their life driving around in gas-powered cars, filling up at one of the hundreds of thousands of gas stations as the gauge creeps towards empty. Charging one’s EV takes a little more planning, but with the growing demand and incentives for alternatives to gas-powered cars, Level 2 public EV charging stations are becoming a more common sight.

So whether you’re the owner of an EV or looking to add a public EV charging station to your commercial property, here are just a few things you should know about how an EV charger works.

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What Is an EV Charger?

Both electric vehicles and plug-in hybrid electric vehicles require an EV charger to keep the battery full, just like any chargeable device or electronic. 

How Does EV Charging Work?

At its most basic, an EV charger pulls an electrical current from 240v power and delivers that electricity to the vehicle, just like any other appliance or device you charge by plugging into the wall.

Chargers Plug into Most EVs—And Adaptors Are Available

For the most part, a J plug is standard for EVs—that is, unless you have a Tesla or are trying to use a Tesla EV charging station. Think of it as a device charging cord: If you have a USB-C cord, but your device takes Mini-USB, the USB-C cord can’t be used to charge your device without an adaptor. 

Because Teslas use their own form of connector from the device to the vehicle, a Tesla charger cannot be used on a non-Tesla vehicle, and a non-Tesla charger cannot be used on a Tesla vehicle without an adaptor.

Adaptors do exist and can be purchased online, but it’s important for drivers to note what type of charger they’re parking in front of. Additionally, commercial entities that want to provide EV charging on their property or parking lots should take into consideration that buying only Tesla chargers will leave many EV drivers unable to use your services.

Setup Your Home Charging Solution

The Home 50 Amp Smart EV Charger comes with the necessary hardware to mount and install your new Level 2 charger inside your garage or outside your home.

Our EV home charging stations are small in size, simple to use, and feature fast, safe and efficient charging. They are a cost-effective and convenient option for keeping your EV powered and ready to go whenever you need it. Answer a few simple questions through our EV Charging Time tool to help determine the best amperage and charging speed to fit your needs as you decide how to install an EVSE at home.

How Do Public EV Charging Stations Work?

If you are parking in front of an EV charging station, there are a few things you’ll need to determine. For one, the station may be provided free of charge, may require a key FOB or other access device, or it may require credit card payment—similar to other parking situations such as only being allowed to park in a lot for free if you’re a customer, or you may need to pay a parking meter during specific times and on specific days. The device and posted notices should make it clear how to use the charging station.

For organizations looking to add public EV charging stations to their property, EvoCharge’s commercial charging solutions give you options when it comes to how others will use your charger. There are different charging station features that allow you to control output, charging times, control access via RFID, and even connect to a network for monitoring or accepting payments.

Plan With Public EV Charging Stations in Mind

Once you start to notice public EV charging stations, you’ll begin to incorporate them into your schedule, such as planning on running an errand last so you can utilize the chargers in their parking lot.

Commercial organizations will want to think about how charging can be incorporated into your business for customers or employees: Are your customers or visitors more likely to frequent your location if you offer a public EV charging station? Might they stay longer if they know they’re getting an extra charge every additional minute they spend in your establishment? Can your company become your clients’ go-to location to run errands if they know you have provided a public EV charging station? The importance is in knowing your customer and understanding how incorporating an EV charging station to your business can help provide a service.

EvoCharge provides solutions for both home and commercial operations for Level 2 AC and Level 3 DC fast charging. The chart provides the basis to how EV charging works and with each level. 

Level 1Level 2Level 3 Type of CurrentACACDC Voltage120V240V480V Connector TypeJJCCS1 Average Charge Time (from empty)*11-20 hours3-8 hours30-60 minutes UseSlowFast Fastest

* Average charge time and mile per hour charged is dependent on the individual car’s acceptance rate and power output of the charging station.

Are you interested in learning more about EV Power Charger? Contact us today to secure an expert consultation!

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