hybrid car

advantage:

1. After the hybrid power is used, the maximum power of the internal combustion engine can be determined according to the average power required, and the engine is relatively small (downsize). At this time, it is working under the optimal working conditions of low fuel consumption and less pollution. Since the internal combustion engine continues to work, the battery can be continuously charged, so the trip is the same as that of a normal car.

2. Because of the battery, it is very convenient to recover the kinetic energy when going downhill.

3. In the prosperous urban area, the internal combustion engine can be shut down and driven by the battery to achieve “zero” emissions.

4. With the internal combustion engine, it is very convenient to solve the problems encountered by pure electric vehicles such as air conditioners, heating and defrosting.

5, you can use the existing gas station to refuel, no need to invest.

6, can keep the battery in a good working condition, no overcharge, over discharge, extend its service life and reduce costs.

7. The whole vehicle can work at the same time due to multiple power sources, and the vehicle has excellent power.

Disadvantages: The system structure is relatively complicated; the long-distance high-speed driving is not obvious.

Pure electric car

Advantages: The technology is relatively simple and mature, and can be charged as long as there is power supply.

Disadvantages: The storage capacity of the battery unit weight is too small. Because the battery of the electric vehicle is more expensive and does not form an economic scale, the purchase price is more expensive. As for the use cost, some trial results are more expensive than the car, and some results are only for the car 1 /7~1/3, this depends mainly on the battery life and local oil and electricity prices.

Fuel cell vehicle

Compared with traditional cars, fuel cell vehicles have the following advantages:

1. Zero emissions or near zero emissions.

2. Reduce the water pollution caused by oil leakage.

3. Reduce greenhouse gas emissions.

4. The conversion efficiency of fuel cells is high (about 60%), and the fuel economy of the whole vehicle is good.

5, running smoothly, no noise.

Disadvantages: Fuel cells are expensive and expensive to use (hydrogen).

Hydrogen powered car

Advantages: Emissions are pure water and do not produce any contaminants when driving.

Disadvantages: The cost of hydrogen fuel is too high, and the storage and transportation of hydrogen fuel is very difficult according to technical conditions, because the hydrogen molecules are very small and easily escape through the outer casing of the storage device. In addition, the most deadly problem is that the extraction of hydrogen needs to be done by electrolyzing water or using natural gas. As a result, it also consumes a lot of energy. Unless it is extracted by nuclear power, it cannot fundamentally reduce carbon dioxide emissions.

Super capacitor car

Advantages: short charging time, high power density, large capacity, long service life, maintenance-free, economical and environmental protection, etc.

Disadvantages: low energy density, it is difficult to meet the needs of the entire vehicle, so it is generally used as an auxiliary accumulator; the power output is attenuated as the mileage increases.