New energy vehicle roof and solar panels

Introduction Add solar panels to the roof of new energy vehicles As we all know, as long as the sun exists, solar energy is a resource that can be used infinitely, such as solar street lights, solar power stations and solar panels. solar water heaters.

New energy vehicle roof and solar panels

As we all know, as long as the sun exists, solar energy is a resource that can be used infinitely, such as solar street lights, solar power stations, solar water heaters, etc. ., as we can see everywhere in our lives. Speaking of which, I wonder if you have any doubts, that is, since solar energy is so easy to use, why are there no solar devices installed on vehicles? new energies? If new energy vehicles can achieve "autonomous power supply", wouldn't this solve the energy supply problem of new energy vehicles?

In fact, manufacturers have long tried to use solar energy to charge new energy vehicles. In 1992, the Mazda 929 featured optical solar cells placed on the roof, and solar sunroof configurations appeared on Mercedes-Benz E-Class,the Audi A8, A6 and other models. In 2017, Japanese Toyota launched the Prius PHV with solar panels installed on the roof, but after a while the sales were not very good.

Low utilization rate

First of all, solar energy uses photovoltaic panels to convert solar energy into electrical energy. However, its power generation efficiency is not very high. According to experimental data, the current conversion efficiency of solar charging can reach 30%. However, if photovoltaic panels are installed on roofs and hatch panels, the angle of receiving sunlight must also be considered, so in the actual application, the conversion rate is not only about 18%.

The solar panel of the Toyota Prius PHV has a power generation efficiency of only 22% and a power generation capacity of 180 WW. After being explaced in the sun every day, it can only increase the cruising range by 5. kilometers. Therefore, a small amount of electricity can only be used by on-board electrical devices for a certain time, which is not enough for road driving. You know, the area of ​​the photovoltaic panels above the solar street light is about one third of the area of ​​the car roof. This panel absorbs solar energy during the day and powers the LDE lights at night. Some lights stopped working early in the morning. If you put it in the car, it will be difficult to drive normally.

High cost

The most advanced gallium arsenide thin film power generation technology at present, its thin film solar cells have a power of 'about 175 watts per square meter, a weight of 3.5 kilograms and a price of 1,395 yuan RMB. If the entire vehicle is calculated on the base of 6 square meters, it will cost 8,370 yuan. At the same time, if the vehicle weight increases by at least 21 kg, it will result in a range of about 10 kilometers per day, which is not as good as lithium batteries. The price/performance ratio is really too low, even the R&D cost of solar panels is not enough.

The installation cost is high and the maintenance cost is high.

Solar materials must be resistant to oxidation and corrosion. , and the anti-collision ability is poor. If the hatch cover is replaced with a solar panel, there are still safety risks. Although gallium arsenide batteries have the characteristics of strong plasticity, long life and repairability, the production cost is still high and it is difficult to promote them. In addition, the car will inevitably experience some shaking when driving, whichwill inevitably increase its maintenance costs. If post-installation maintenance is not carried out properly, the power board may fall off, affecting driving safety.

Invisible pollution

Although solar energy itself is non-polluting, the thin-film gallium arsenide electrical panels used in the electricity generation process are non-polluting and becomeGallium arsenide is also non-toxic, but the arsenic used in the synthesis process is highly toxic and gallium is also a heavy metal. If it is installed in a car and so close every day, it will affect the human body to a certain extent. Additionally, damaged photovoltaic panels cannot be recycled. Once damaged, contamination is inevitable.

Driving Experience

We should know that in hot summer weather, once ordinary cars are exposed to the sun, the temperaturetemperature inside the car can reach more than 60 degrees, while solar panels can only generate electricity under exposure. At that moment, once you enter, you imagine the taste and the sourness. Also, when exposed to sunlight, will the solar car turn on spontaneously due to the heat absorbed by the power generation panel? These are also questions that concern consumers.

In order to realize “self-powering” of new energy vehicles, it is inevitable to increase the conversion rate of solar energy. I believe that with the continuous progress and breakthroughs in science and technology, this day will definitely come!

One million car purchase subsidies

The price of refueling and charging new energy vehicles is about the same , I don't think this is the case, because recharging. new energy vehiclesis divided into Level, if you use ordinary charging, of course it will be cheaper, but if you choose ultra high voltage charging for fast charging, the cost will naturally be higher, depending on the actual needs you have.

Fuel cars are also fuel cars in the traditional sense. They also have the advantage of low price, i.e. competition in the mid to low end market. , when you buy a new energy car, it's basically about 200,000, or at least 150,000 to 200,000. No matter how cheap it is, there are very few people. If it's too cheap, you won't dare to buy it. because the functions and performance in all aspects may not be so complete, but a traditional fuel vehicle costs about 50,000 yuan. It is no problem to buy an ordinary mobility scooter. If you are looking forhe absolute performance, this may not be possible. , but it has all the functions that a basic car should have, and the price/performance ratio is obviously higher.

If I buy a car in the short term, I will consider a fuel vehicle rather than a new energy vehicle, because if I want to buy a fairly good new energy vehicle, it will cost around 160,000, which is still relatively cheap. Yes, then choose a traditional gasoline car, which costs about 60,000 yuan, which is about the same, because it can't protect you from wind and rain if you bring it yourself, and you're not looking for absolute speed. Just use a regular gasoline car and step on the accelerator a little, it's no problem to reach 70 or 80.Running 112 at high speed is completely stress-free, and there is some. no autonomy issues or autonomy anxiety.

New energy vehicles will gradually become more popular in the future. This is a big trend, but it's short-term. In a neck-and-neck situation, it's difficult to question who will replace who. It is expected that new energy vehicles will become popular on a large scale in 10 to 15 years. will be in the minority, because traditional fuel vehiclesCars consume relatively a lot of fuel and oil is a non-renewable resource. It's just that the technology is not yet mature, and new energy vehicles need more technology accumulation and breakthroughs in key technologies.

If you are trying to charge in an area where charging is more convenient, and your own needs are not that high, and the route is flat at two hours and one line every day, and you can predict the approximate mileage par day, buy one. New energy vehicles are also available. Additionally, obtaining a license plate is a problem in many large cities. It is difficult to get a fuel vehicle, but it is easier for new energy vehicles to have green lanes.If you are on a bumpy city road with a lot of things. uphill and downhill roads, you may not be able to get a gasoline vehicle. It will be more practical.

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