Ultracapacitor/Supercapacitor for electric vehicles

In summary, the conversation discusses using ultracapacitors in an electric vehicle and the differences between them and regular capacitors. It is mentioned that supercaps have a higher energy density and are better suited for regenerative braking. The possibility of using a fuel cell instead of a capacitor is also mentioned. The conversation ends with a link to an article about the applications of supercaps in electric vehicles.
  • #1
baris
3
0
Hello All,

We are trying to make an electric vehicle and we want to use ultracapasitor.
Is there anyone who has experiences and what is differences these capasitors from others?
 
Engineering news on Phys.org
  • #2
The supercaps that I'm aware of are for low-current, long life applications. Not for high peak current applications like a car. Panasonic makes some supercaps, so you could check their website. You're also not going to get the energy density out of a capacitor that you can out of storing the energy in the chemical reaction of a battery.

Have you considered using a fuel cell instead?
 
  • #3
The only major difference that I'm aware of is that supercaps have a much higher energy density when compared to "regular" capacitors. If you need it for the purposes of vehicles, you'll need a supercap in excess of 2500F! I've never seen an electric vehicle powered by only a supercap. These kinds of capacitors would be best if it could get assistance from an internal combustion engine.
 
  • #4
Maxwell Technologies makes some very heavy duty capacitors. They're great for huge power densities, but batteries are better for energy density. These caps also have a high self-discharge rate. I think that a car could best use these devices to take better advantage of regenerative braking. They can be charged much more quickly than batteries.
 
  • #5
Yes we will use in a hydrogen car.We try to design like this

fuelcell---supercap---motordriver---motor

we don't want use a converter before motor driver because efficiency more importand for us.We want to regulate voltage after fuelcell with these supercaps
 
Last edited:
  • #6
I just ran across an interesting article about applications of supercaps, including electric vehicle use. Interesting:

http://powerelectronics.com/passive_components_packaging_interconnects/capacitors/power_ultracapacitor_technology_powers/?cid=top-articles [Broken]
 
Last edited by a moderator:

1. What is an ultracapacitor/supercapacitor?

An ultracapacitor/supercapacitor is an energy storage device that stores and releases energy through the physical separation of positive and negative charges. Unlike batteries, ultracapacitors/supercapacitors do not use chemical reactions to store energy, allowing them to charge and discharge much faster.

2. How do ultracapacitors/supercapacitors benefit electric vehicles?

Ultracapacitors/supercapacitors can provide high power bursts of energy, making them ideal for electric vehicles that require quick acceleration. They also have a longer lifespan and can withstand a higher number of charge-discharge cycles compared to traditional batteries.

3. What is the current state of ultracapacitor/supercapacitor technology for electric vehicles?

The use of ultracapacitors/supercapacitors in electric vehicles is still in its early stages. While they have been successfully integrated into some electric buses and trains, further research and development is needed to make them a viable option for widespread use in electric vehicles.

4. Can ultracapacitors/supercapacitors replace traditional batteries in electric vehicles?

It is unlikely that ultracapacitors/supercapacitors will completely replace traditional batteries in electric vehicles. While they have their advantages, they also have limitations such as lower energy density and higher costs. It is more likely that they will be used in conjunction with batteries to enhance the performance of electric vehicles.

5. What challenges need to be addressed for the widespread use of ultracapacitors/supercapacitors in electric vehicles?

Some of the main challenges for the widespread use of ultracapacitors/supercapacitors in electric vehicles include improving their energy density, reducing costs, and increasing their lifespan. Additionally, there is a need for standardization and regulations for their integration into electric vehicles to ensure safety and compatibility with existing infrastructure.

Similar threads

  • Electrical Engineering
Replies
6
Views
1K
  • Electrical Engineering
Replies
7
Views
189
Replies
22
Views
453
  • Electrical Engineering
Replies
20
Views
452
  • Electrical Engineering
4
Replies
117
Views
8K
  • Electrical Engineering
Replies
8
Views
3K
Replies
16
Views
221
Replies
19
Views
2K
  • Engineering and Comp Sci Homework Help
3
Replies
102
Views
4K
Replies
6
Views
937
Back
Top