What is the energy transfer that takes place in winding up a battery powered car
Answers
Answer:
Explanation:
Wouldn't it be pretty cool to do all of your daily driving without ever having to fill up at a gas station? Well, that's quickly becoming a reality for people who drive electric vehicles—sometimes called EVs.
EVs are gaining popularity. And with good reason—they're convenient; they're sleek and quiet; they keep our air clean. And for most of the short-distance driving we do, they're the perfect way to get from point A to point B safely, reliably, and comfortably.
Text appears onscreen: "80% of Americans drive less than 40 miles round trip for their daily commute."
Okay, have a look at the numbers. More than 80% of Americans drive less than 40 miles round trip for their daily commute, which is just right for an EV.
The video moves to shots of EVs on the road. One EV's trunk is opened to show its battery compartment.
Many of today's electric cars can go up to 100 miles on a single charge. That's because battery technology continues to advance, becoming smaller while storing more energy.
Another EV's hood is opened. Text appears onscreen: "EVs – Powered by Lithium Ion Batteries."
Lithium ion batteries—like the ones in cell phones—are a big reason for that improvement.
The video shows a shot of an EV on the road, then a shot under the hood of an EV. Text appears onscreen: "Up to 80% of Energy Transferred."
Here's how an EV works. Batteries transfer energy to an electric motor. The motor turns a drive train that turns the wheels. It's a highly efficient technology: up to 80% of the batteries' energy is transferred directly to power the car.
The video shows a hand navigating the electronic display of an EV, and then that of a mobile phone.
Everything is computer controlled, and a display shows you how the car is performing. The display lets you know about how much battery power you have left, and if you need to find a place to recharge, new software built into the car—or on your mobile device—will guide you to the nearest charge point.
The video shows an EV's power port opening; a power supply is plugged in to charge the battery.
When you're ready to charge your EV's battery, instead of a gas tank, there's a power port. And instead of refueling, you recharge. Just plug it in!
The video shows an EV being charged at a public charging station.
Most people will probably recharge overnight when they're done driving for the day and electricity may be cheaper. But for a quick charge during the day, charging stations are popping up in thousands of convenient community locations across the U.S.
The video shows various shots of an EV: the vehicle in motion, its display screen showing its battery power status, and its power port being charged.
Check out this extended range EV. It starts by using battery power, but when the battery power runs low, a gasoline-fueled engine kicks in to power the electric motor, which in turn drives the wheels. So for shorter trips, you can rely on electricity, and still take longer road trips whenever you want. Anywhere you go, you can simply plug in or fill up.
The video shows various shots of EVs on the road.
EVs have a lot of great advantages: cleaner air, lower maintenance costs, and they help reduce America's dependence on foreign oil.
America has had a long love affair with cars. Now, we're starting the next chapter—this time falling for clean, comfortable, convenient electric vehicles