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The difference is big,Many of the main structures are different: different energy sources, different power system compositions, different maneuverability, different service life, and so on. In addition to this, the vehicles** are also different.
The use of energy and power systems is different. Cars need to burn gasoline or diesel to power the internal combustion engine, but electric cars rely on electric motors to provide power, gasoline is stored in the fuel tank, and electrical energy is stored in batteries. Compared with the 10%-20% efficiency of the internal combustion engine, the electric motor can make full use of the electrical energy, with an efficiency of up to 90%, which is more efficient and energy-efficient in comparison.
And as far as the power system is concerned, the structure of traditional cars is more complex, and electric vehicles are relatively simple, including engines, gearboxes and other traditional automotive components can be simplified or even not needed on the trams, so the trams are easier to manufacture and have more potential. <>
Maneuverability is different. At this stage, the maneuverability of electric vehicles put into commercial use is not comparable to that of traditional cars, which is manifested as: the endurance of electric vehicles is not as good as that of cars, driving long distances, electric vehicles often have to be charged halfway, and the charging is not as fast as refueling, and it is limited by charging piles; The power of electric vehicles is not as large as that of cars, and the performance is decent, which can meet daily use, but the pursuit of speed is not good; Electric vehicles are more sensitive to temperature changes, and the battery is affected by the low temperature environment, which will have a large loss, which is not conducive to use and reduces the life; Wait a minute.
However, now the pure electric vehicles produced by Tesla have made great breakthroughs in endurance and acceleration of 100 kilometers, which has also allowed electric vehicle researchers to see the dawn. <>
Lifespan is different. At this stage, the battery life of most trams is about five or six years, and when the battery life is up, it must be replaced, otherwise it can only be scrapped. The car will last a little longer and be more stable.
**On the other hand, electric vehicles are more expensive than traditional cars, and they should get better in the future, depending on technological breakthroughs and manufacturing developments, but it should not be difficult.
The outcome of the future will be different. Electric vehicles are the future, while traditional cars will be phased out. Due to energy depletion and environmental degradation, human beings have to develop and use new energy sources, and electricity is the trend of the future
It is a well-known energy source and can also be well adapted to the new energy structure of the future. Combined with the Internet 5G, high-tech electric vehicles such as intelligent driving can go further in the future, and it is more practical, including China, many countries have formulated relevant plans to gradually phase out fuel vehicles in the next few decades, or take back the day when the mandatory elimination is not enough, electric vehicles have occupied the market.
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First of all, the driving force energy** is different. Combustion engine vehicles are powered by burning gasoline**, while electric vehicles are powered by power batteries. Burning gasoline releases a large amount of gas, so gasoline vehicles are equipped with exhaust pipes.
The tram uses batteries and does not have exhaust pipes. Because there is no exhaust pipe, there is more usable space for electric cars than for gasoline vehicles. In addition,Under the same conditions, the mileage of a fuel car is long, and the mileage of an electric car is short.
Secondly, the impact on the environment. The gases emitted by fuel vehicles include harmful gases such as carbon monoxide and sulfur-containing compounds, which are easy to pollute the environment and have a burden on the human body. The electricity used in the trams is clean energy and has no negative impact on the environment.
Therefore, basically the electric car of the same class is higher than that of fuel vehicles. However, there will be certain subsidies for the purchase of trams in various places, and relevant benefits will be introduced, so that the difference between the two will not be too much. <>
It's also very fast, filling up in a few minutes; However, for electric cars, charging stations have not yet been widely used nationwideThe location of charging is restricted. Not only that, but the charging time of the train is about 6 hours, which is quite time-consuming. Fuel vehicles need to be sent to 4S shops for maintenance on a regular basis, and a certain amount of money needs to be invested, but the maintenance cost of trams is basically zero.
Fuel vehicles do not have power energy** This problem, but the power battery of the tram has a certain service life and needs to be replaced in time. However, there is no economical and fast way to dispose of used batteries that have been replaced. <>
Some of the internal devices are different. On the dashboard, there must be a coolant temperature gauge and an oil gauge on the fuel car meter, while the tram does not need a coolant temperature gauge, only an fuel gauge. In addition, the tachometer of the fuel car gauge corresponds to the power gauge of the tram.
There is also a difference between the cold and warm air brakes of the air conditioning system. Cold air: Both are cooled by compressors, fuel vehicles are driven by engines, and trams are electric; Heater:
Gasoline vehicles are heated by coolant, while electric cars rely on electric heaters for heating.
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The biggest difference is in terms of energy, one is the use of oil and the other is the use of electricity. Now the country has introduced a new policy power battery to usher in the scrapping period, from a short-term point of view, fuel vehicles temporarily lead the tram, but in the long run, the tram will definitely lead the new energy vehicles.
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Fuel vehicles pollute the environment seriously, and oil is limited, trams are pollution-free, but now the charging equipment needs to be improved.
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The main difference is in the use of energy. Fuel vehicles still use traditional power sources, mainly oil. As a new type of power vehicle, the electric car uses a battery-based power source.
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From the perspective of environmental protection, electric vehicles are more environmentally friendly than fuel vehicles, without emission pollution, exhaust pollution, and from the perspective of battery life, fuel vehicles have stronger endurance than electric vehicles.
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1. The development of fuel cell new energy vehicles
Relatively short service life
From the perspective of the development of fuel cells for new energy vehicles, the short service life of fuel cells is the main technical problem. In addition to the high production cost, the fuel cell catalyst will be seriously consumed after a corresponding period of time, which will affect the service life of the fuel cell, shorten the service life, and increase the cost.
The cost is relatively high
The production cost of fuel cell new energy vehicles is high, which has a great impact on the mass production of products. The high production costs of fuel cells will not change much in the future. This is mainly because platinum is a relatively expensive metal.
A 150 kW fuel cell requires 60 grams of platinum as a catalyst. Add other costs to the cost of using a car.
The infrastructure construction is not perfect
At present, the infrastructure of fuel cell new energy vehicles is not perfect, which is also an important factor hindering its promotion and development. In daily life, the promotion of fuel cell new energy vehicles requires sufficient hydrogen stations. China's development in this field has just started, and there are relatively few hydrogen refueling stations, which has become an important obstacle to the development of fuel cell new energy vehicles.
2. Innovative measures for the development of fuel cell new energy vehicles
Reduce production costs
If fuel cell new energy vehicles want to develop well, they must minimize the cost of battery production. Although there are deficiencies in the development of fuel cells, with the progress of technology and the further improvement of people's economic level, there will be breakthroughs in solving corresponding problems in the future development. In order to realize the innovative development of fuel cell new energy vehicles, it is necessary to properly deal with and solve the production cost and service life of batteries.
The biggest reason for the high production cost is the application of platinum, which affects the overall production cost. Therefore, in the process of future innovation and development, it is necessary to reduce the use of platinum catalysts or find catalysts that can replace platinum. No matter what breakthrough is made, it can effectively reduce production costs.
Establish sound safety standards
The top priority is to pay more attention to the construction of safety standards, combine the current shortcomings of fuel cell new energy vehicles, improve safety standards, and effectively improve the safety performance of new energy vehicles. Clarify the installation requirements and protection level requirements of fuel cell new energy vehicle parts, and clarify fuel filling standards, hydrogen storage containers, low-pressure protection and overpressure protection. New energy vehicles should also pay attention to the establishment of hydrogen concentration detector linkage safety measures, further improve the safety requirements of the power circuit system, build a unified safety standard for new energy vehicles, and effectively improve the overall performance of the vehicle, so as to promote development.
Fuel cell new energy vehicles.
In the process of innovation and development of fuel cell new energy vehicles, it is necessary to pay attention to infrastructure construction. The disadvantages of fuel cell new energy vehicles are obvious, but their advantages are also outstanding. It is hoped that the infrastructure planning of new energy vehicles will be done in advance, so as to lay a solid foundation for the diversified development of the new energy vehicle market and play a positive role in promoting the popularization of fuel.
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The problem with the development of new energy vehicles is that it has not been popularized, the charging problem is more difficult to solve, there are no more charging piles, and the number of charging piles is very scarce. If we want to solve this problem, we need to coordinate with each other to build more charging piles.
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There are many problems, first of all, the battery life is relatively poor, and in the process of R&D and manufacturing, the cost is relatively high, so the sales are relatively high; To improve battery life, you should also ensure battery capacity and reduce costs**.
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The battery life is particularly poor, the power is relatively poor during driving, and the temperature is relatively low in winter, and the battery will lose power; To increase the capacity of the battery, it is necessary to improve the battery life.
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The difference between direct fuel cells, electric vehicles, reforming fuel cells, and electric vehicles is that they all use the same fuel, but their speeds are different.
Note: Hydrogen fuel cell vehicles are composed of fuel cell stacks and power batteries.
The drive motor and electronic control system are composed in the fuel cell stack.
, a reaction of hydrogen and oxygen is carried out, and there is a charge transfer in the process, which produces electric energy to provide a power source.
From the above simple introduction, it is not difficult for us to see that hydrogen fuel cell vehicles and pure electric vehicles.
The difference is that both are composed of a power battery, an electric motor and an electric system.
While hydrogen fuel cell vehicles have one more power generation device composed of hydrogen and oxygen fuel cell systems, so hydrogen fuel cell vehicles.
It can be understood as an electric vehicle with its own hydrogen fuel generator, and a pure electric vehicle needs to use external electrical energy to charge the power battery.
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A fuel cell vehicle (FCV) is a type of vehicle that is powered by electricity generated by an on-board fuel cell unit. The fuel used in the on-board fuel cell unit is high-purity hydrogen or high-hydrogen reformed gas obtained from the reforming of hydrogen-containing fuel. The difference in power compared to conventional electric vehicles is that the power used by FCVs comes from on-board fuel cell units, and the electricity used by electric vehicles comes from grid-charged batteries.
Therefore, the key to FCVs is fuel cells.
A fuel cell is a high-efficiency power generation device that converts the chemical energy of fuel into electrical energy directly by electrochemical reaction without burning fuel. The basic principle of power generation is as follows: the anode (fuel pole) of the battery is fed hydrogen (fuel), and the hydrogen molecule (H2) is dissociated into hydrogen ions (H+) and electrons (E-) under the action of the anode catalyst. Oxygen (O2) is input to the cathode of the battery, and the oxygen is dissociated into oxygen atoms (O) under the action of the cathode catalyst, which combines with E- flowing to the cathode through an external circuit and H+ through the electrolyte to form water (H2O) with a stable structure, completing the electrochemical reaction and releasing heat.
This electrochemical reaction is completely different from the violent combustion reaction of hydrogen in oxygen, as long as the anode continuously feeds hydrogen and the cathode continuously feeds oxygen, the electrochemical reaction will continue continuously, and e- will continue to flow through the external circuit to form an electric current, thus continuously supplying electricity to the car. This electrochemical reaction is a static power generation method in which electricity is obtained without the movement of an object. Therefore, fuel cells have the advantages of high efficiency, low noise, and no pollutant emission, which ensures that FCVs are truly efficient and clean vehicles.
In order to meet the requirements of automobile use, automotive fuel cells must also have the characteristics of high specific energy, low operating temperature, fast starting, and no leakage.
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1. Cost: Especially the initial establishment cost, it is still higher than that of generators, so it is difficult to promote, although with the progress of technology, the cost is also decreasing, but there is still a way to go. 2. High technical threshold:
For manufacturers, sellers, and consumers, they need to have certain technology or training, which is not easy to achieve at present. 3. Coordination of infrastructure: The focus is on the provision of fuel, whether it is to use natural gas or petroleum gas for modification, or directly use hydrogen, it needs to have coordinated infrastructure, which is a large expenditure.
Due to the consistency of the battery cell, the cycle life of the whole pack will generally be discounted, that is, 1200-1600 weeks (although it is not fully charged and discharged in the battery pack, but in the actual application process, there are generally fast charging, low temperature charging, or high temperature use conditions, which will affect the life to a certain extent); At that time, the original new energy vehicle will be replaced, which is equivalent to extending the service life. Maybe in the future, it will develop into a new model that doesn't cost money to buy a car and value-added services need money, and then you don't have to worry about battery life. >>>More
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