Why do electric cars not have alternators?

If an alternator works fine to charge a battery, why don’t we use one in an Electric Car? … An electric car doesn’t have an engine or gas/diesel fuel. Instead, it has an electric motor and rechargeable battery. We COULD use the battery to spin the motor to spin the alternator to generate electricity.

Why cant electric cars charge themselves?

Yes, a self charging electric car is simply made using in wheel hub motors, supercapacitors, and a generator. … But apparently the amount of energy used to produce the energy for charging the second battery would cancel out the energy produced.8 мая 2016 г.

Do electric cars recharge while driving?

A common idea is to charge the car while driving, such as a gasoline engine or battery pack on a trailer. … Some electric car makers advocate for large battery packs with 300-350 miles range along with a fast charging system allowing for a 1-1.5 hour recharge time from empty.

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Do all cars have alternators?

All cars with an internal combustion engine except for some hybrids have an alternator. When an engine is running, the alternator charges the battery and supplies additional electric power for the vehicle electrical systems. An alternator is bolted to the engine and is driven by a serpentine belt (drive belt).

Can an alternator power itself?

Originally Posted By Demosthenes99: Well yes, but energy will be lost by friction and heat so it would eventually run out of power all the same. No such thing as 100% energy transferrence.

Does the i8 charge while driving?

CHARGING WHILE DRIVING.

In the non-electric driving modes, the high-voltage battery is charged directly by the petrol engine so that it is available for the boost function. … And if you are driving your BMW i8 in the HYBRID mode, the high-voltage battery is charged exclusively by Brake Energy Regeneration.

Can a Tesla charge while driving?

In reality, a Tesla is charging almost every time while you’re driving! The regenerative braking, (which just means the wheel motors turn into generators when slowing down), charge the Tesla batteries. In addition, if a charging cord is connected to the charger port, the car won’t let you drive!

Why are Nissan Leafs so cheap used?

Because of poor range, high battery degradation coupled with high battery replacement cost, and boring design makes Nissan Leaf an undesirable vehicle. So, the majority of the people don’t want to buy a used Nissan Leaf. This hurts the resale value, thus making a used Nissan Leaf very cheap.

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Do electric cars lose charge when parked?

In short, there’s no need to worry! Electric cars can handle extended periods of inactivity very well, even better than combustion-powered engines, in fact, whose 12V batteries can lose charge, and whose fluids and radiator hoses can become damaged.

Can you drive an electric car through water?

Electricity and water are usually a bad mix, but electric car batteries are so well sealed as to be waterproof in all but the most extreme conditions, and because an electric car doesn’t need an air intake, you’re back to dealing with floating, rather than flooding, problems.

Do alternators produce AC or DC?

The output of an alternator is direct current (DC). When the alternator pulley is rotated, alternating current (AC) passes through a magnetic field and an electrical current is generated. This is then converted to DC via the rectifier.

What does an alternator cost?

Waits says the average price to replace an alternator with a remanufactured one is $400, while Gunning adds that a remanufactured alternator on a typical, domestic car, costs about $300 to $500, including parts and labor. The price of a new alternator can run from $500 to $1,000.

How can I tell if my alternator is bad?

Signs of a Bad Alternator

Some of the things to look for are no-starting and trouble starting, dimming lights and problems with stereo system output. If your car starts but stalls when you’re underway, your battery is probably not being recharged due to a faulty alternator.

How much power does it take to run an alternator?

How much engine horse power does the alternator take? An alternator typically takes about 1 HP (horse power) for every 25 amps of power generated. So, a 100 amp alternator will require about 4 HP at full output. Most alternators do not operate at full output for very long.

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Can an alternator power an electric motor?

Magnetic force in an alternator causes a mechanical resistance. … Both the motor and the alternator have other losses too, such as windage and friction. You could connect an electric motor to an alternator, but the energy delivered by the alternator would be less the motor requires to turn it.

Can you charge a car battery by spinning the alternator?

Re: charging battery by spinning the alternator

When the alternator is charging, it takes 3-6 hp to be able to spin it.

Recharge