10 Apr 2008 0:44 Re: why battery cars are not popular ?
1. The cost of the battery.
2. As you increase the battery size you add weight so you do not get an increase in driving range proportional to the battery improvement.
The only successful battery powered vehicles are for driving around golf courses. In these cases the weight of the vehicle is low and the speed is low. They would not be legally allowed on public roads.
10 Apr 2008 15:25 Re: why battery cars are not popular ?
In addition:
- The battery wears rapidly because of the repeated charge/discharge cycle, and it needs to be replaced quite often. This is bad because the battery is expensive (is a high capacity low volume type) and also contains a lot of toxic materials and substances that need to be recycled.
- There is no "free energy", so after using the car for a day, you need to recharge the battery and this takes time (about 10-12 hours) and consumes lots of energy (tens - hundreds of kW - expensive). Personally i don't think the national power system could support charging car batteries over night if all the cars were electric.
Nowadays the ecologic ideas about reducing energy consumption and pollution are widespread.
The battery cars would be beneficial if:
- small size, high capacity, long life, non hazardous batteries would be available;
- power could be generated at low price and without pollution.
The battery cars give the impression of a green car, because they don't produce gases and don't use oil; but on the long term, because of the problems mentioned, they could be more dangerous than classic cars, if used in high numbers. A problem is also with hydrogen cars, because producing hydrogen also needs lots of energy and toxic chemicals.
10 Apr 2008 21:35 Re: why battery cars are not popular ?
There is something you should no.
If u got simple inductor and a simple passive magnet, so if u will move magnet over the inductor you will get a small amount of energy. From where ? But its the way simple generator motor works, so kick it start and whola, u will get a electrical energy.
Joined: 21 Apr 2005 Posts: 292 Helped: 32 Location: India
11 Apr 2008 8:51 Re: why battery cars are not popular ?
rikie_rizza wrote:
Because if its popular, the demand for oil will drop and nations will collapse! That is why they made the technology to be not popular.
This is the main reason behind this, apart from oil, car manufacturers have invested so much money in oil based cars so even they don't like this idea. Otherwise all technical problems associated with battery powered cars can be solved with proper research may be most of them have been already solved but not visible to us.
12 Apr 2008 1:07 why battery cars are not popular ?
Hey, you guys are forgetting something. These cars can not gain speed as every1 wants from a car. The fuel engine is much more efficient in gaining sudden acceleration. I think this is one of the main reasons........
12 Apr 2008 1:33 Re: why battery cars are not popular ?
Yamazaki, it is actually oposite. Electric cars have excellent acceleration. It is iniital cost that keeps buyers away and after cost of replacing bateries. As with any new technology it needs to get mass-produced to lower cost. Also there are no bateries developed yet specifically for this purpose, so in future you will see slow shift towards this.
For now, if you have deep pockets : http://www.teslamotors.com/
Joined: 16 Aug 2007 Posts: 111 Helped: 2 Location: Norway
12 Apr 2008 1:35 Re: why battery cars are not popular ?
JoKKeR wrote:
If u got simple inductor and a simple passive magnet, so if u will move magnet over the inductor you will get a small amount of energy. From where ? ...snip...
Where on earth did this come from?
It could work if you drove your car in circles under a waterfall with the water powering the generator. Or in strong wind with the wind powering the generator. Or are you going to power the generator with your feet?
I would recommend a crash course in basic physics.
24 Apr 2008 9:23 Re: why battery cars are not popular ?
vivek_bahire wrote:
they dont generate enough power, top speed is less and u have to replace batteries after a few years.
i agree , motors that runs on 12v car battery alone are still limited and usually does not have enough power. We tried to use this on an old project... it didn't go that fast
Joined: 08 Jan 2008 Posts: 63 Helped: 10 Location: US, CA
24 Apr 2008 21:08 why battery cars are not popular ?
You're talking about one specific case only and cannot generalize from that.
Electric motors can be designed for almost any power and speed, and can easily exceed IC engines performance. Existing electric motors can go in the 100000+ RPM range easily. Motor speed isn't an issue here.
Motors currently used for vehicle propulsion usually run off of a higher voltage, like 330V, not necessarily because of speed reasons.
Joined: 19 Jan 2008 Posts: 434 Helped: 30 Location: Canada
25 Apr 2008 2:53 why battery cars are not popular ?
There is an electric car made in Quebec (French) Canada.
It is a little toy.
Its top speed is so slow that it is banned from Canada. I think it is sold in South America.
It is really an expensive converted little Golf Cart.
Joined: 16 Aug 2007 Posts: 111 Helped: 2 Location: Norway
25 Apr 2008 11:59 Re: why battery cars are not popular ?
Hydrogen fuel cells would be a real killer if some brainiac could replace the platinum with some cheaper material.. Produces H2O as waste product.
H tanks do blow up when blown up, but the H could be produced chemically as the car rolls... but that introduces another set of waste products ofcourse..
Joined: 08 Jan 2008 Posts: 63 Helped: 10 Location: US, CA
25 Apr 2008 18:46 Re: why battery cars are not popular ?
As mentioned previously, the tesla roadster is an example of electric car with pretty damn good performance for speed/torque.
The problem with electric cars doesn't lie with the electric motor or controller, but with the energy storage/refill.
Hybrids are currently a good compromise...
(about producing H as the car drives... this produces braking torque, and a similar mechanism is currently used in electric vehicles to recharge capacitors/batteries)
28 Apr 2008 9:36 Re: why battery cars are not popular ?
sunderwood wrote:
As mentioned previously, the tesla roadster is an example of electric car with pretty damn good performance for speed/torque.
The problem with electric cars doesn't lie with the electric motor or controller, but with the energy storage/refill.
Hybrids are currently a good compromise...
(about producing H as the car drives... this produces braking torque, and a similar mechanism is currently used in electric vehicles to recharge capacitors/batteries)
I remember that GM produced a nice electric car and it retrieved it from the maket even If consumer liked it. Why ?
28 Apr 2008 19:45 Re: why battery cars are not popular ?
sunderwood wrote:
Correct.
The reason for that is probably more politics/economics related than technical...
Politic/Economic ?
I didn't get.
In fact the Electric car will make countries less dependent to Oil especialy those who import a lot of Oil mainly the US. In addition the Electric car is not expensive compared to ordinary cars.
