Seebob
When I was a kid, I had a light on my bike that was powered by a generator that worked by rotating against my spinning front wheel.
Since a motor car has 4 wheels, why could you not attach generators to each wheel, which would continuously recharge the battery.
Once the car has started, it will be powered by the rotating wheels.
I'm no scientist, just a thought, tell me where I am going wrong.
I forgot to mention, there would be a series of batteries, not just one 12 volt battery.
Answer
That's how car batteries work now. But they don't have enough energy to move an entire car.
They could salvage some of the kinetic energy to prolong its charge but it is nowhere near enough to keep the battery completely charged. It would defy the first law of thermodynamics, you can't get something for nothing
It's like the battery is providing some energy. The generators are siphoning some of that and putting it back. The only way to put put back all of the original energy would be to take ALL of the kinetic energy from the car. But then it wouldn't move.
Generators don't provide energy from nowhere. You may not notice but the generators make the car decelerate once the engine stops pushing it. It's this resistance that is converted directly into electricity. Since you barely notice it slowing the car, it's easy to tell there's not much energy there so it's not enough to totally recharge the car.
That's how car batteries work now. But they don't have enough energy to move an entire car.
They could salvage some of the kinetic energy to prolong its charge but it is nowhere near enough to keep the battery completely charged. It would defy the first law of thermodynamics, you can't get something for nothing
It's like the battery is providing some energy. The generators are siphoning some of that and putting it back. The only way to put put back all of the original energy would be to take ALL of the kinetic energy from the car. But then it wouldn't move.
Generators don't provide energy from nowhere. You may not notice but the generators make the car decelerate once the engine stops pushing it. It's this resistance that is converted directly into electricity. Since you barely notice it slowing the car, it's easy to tell there's not much energy there so it's not enough to totally recharge the car.
Battery on 530i BMW, 2002?
Santos Per
I have changed the battery twice on my car, both walmart brand, both batteries have died in less than a week, it's the same size and the one recommended for the car, yet I don't know what's going on.
Someone told me I had to get the battery registered at a BMW dealer, whatever that means......
Please help me out, wife and kids have been stranded twice.
Answer
I had the same problem with my BMW Z3, turned out it was the electric seats draining the battery (switch stuck). Whilst searching for a solution I heard of trunk lights that don't go out-fans that don't go off etc on many BMW models. Have a look around your car and see if anything is out of the ordinary. It is not the battery it will be something in the car that is not operating properly-if you can't find it yourself get it down to a dealer/garage.
Hope this helps!
I had the same problem with my BMW Z3, turned out it was the electric seats draining the battery (switch stuck). Whilst searching for a solution I heard of trunk lights that don't go out-fans that don't go off etc on many BMW models. Have a look around your car and see if anything is out of the ordinary. It is not the battery it will be something in the car that is not operating properly-if you can't find it yourself get it down to a dealer/garage.
Hope this helps!
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Title Post: Why can't there be a continuously charging electric battery car....?
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Rating: 92% based on 925 ratings. 4 user reviews.
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