Chapter 170： horror graphene

But having said that, compared with the lithium batteries usually used, whether it is ternary lithium or lithium iron phosphate,

These two kinds of batteries have great defects in temperature, and they are all afraid of cold and heat.

So this also leads to the need for battery protection and battery preheating, and additional heat dissipation for the battery.

If you are in use, a little carelessness will greatly reduce the battery life.

The charge and discharge times of these two batteries are only 800-1000 times, and generally speaking, they can be used for eight or ten years.

But there is no absolute in everything. This is just his theoretical data. In daily use, the battery is often charged and discharged with a large current.

This will cause the battery life to be halved, or attenuated even more in harsh use environments.

Due to the characteristics of graphene, it has good thermal conductivity and electrical conductivity, so that it can work in a harsh environment of -50-110 ° C,

It has good performance in both high temperature and low temperature environments, and will not cause too much attenuation due to temperature.

However, the battery he made this time is different. He conducted careful research on the charge and discharge times, and finally solved this problem.

Even if it is produced in the current laboratory, the best lithium battery can be fully charged and discharged 3000-6000 times, not more than 10,000 times.

However, the battery he developed has more than 10,000 charge and discharge times, reaching 50,000 full charge and discharge times.

And even after reaching this number of times, it doesn't mean that the battery is dead, it's just that the battery has attenuated a part, but the capacity can still be guaranteed to be above 85%.

Before that, he introduced the charging and discharging of the battery he developed, as well as the advantages of charging speed, and the most important capacity has also been greatly improved.

Since graphene can reach the thickness of the atomic level, the energy density of the battery will also be greatly increased,

The same 18650 type power battery, under the same volume, the energy density made of graphene is at least ten times higher.

So what will be the final result of this? That is the same 18650 battery, ternary lithium and lithium iron phosphate can achieve 2500-3400mAh,

However, the energy density of graphene batteries is ten times that of theirs, that is, at least 25000mAh.

What will be the result of this? To give a simple example, take Weihua’s folding mobile phone as an example, its battery capacity is 4500mAh,

Some people have tested it before, and it ran for 7 hours and 10 minutes without a break when it was fully charged.

If the battery of the same volume is replaced with his own, it will have 45,000mAh, ten times the capacity, and the time will be 81 hours and 40 minutes.

In conversion, it is more than three days, but don't underestimate these three days, this is the standby time tested in the high power consumption mode.

If it is used normally, the standby time will be able to last for one day, but if it is replaced by his graphene, it will have ten days or even longer without charging.

Seemingly in an instant, the standby time of mobile phones has returned to the Nokia era, the era of not having to charge the mobile phone for more than a week.

With such data here, how do you compare other batteries with this one? Even if you talk about breaking the sky, you can't compare it.

If such a battery is used in the electric motorcycle or electric car he developed in the future, what kind of effect will it show?

That will allow the current car to have ten times the power available. The original car can only run 400 kilometers, and the driving distance will exceed 3,000 kilometers.

Even if the air conditioner or heater is turned on all the time on the road, half the calculation can still allow you to drive such a car from Beiping to Hujiang.

Even for ordinary fuel vehicles, a tank of fuel can only travel 400-600 kilometers, but an electric vehicle replaced with a graphene battery can actually be used, with a mileage of more than 1,500 kilometers.

In this way, it is even better than a fuel car.

After he developed this ultra-high-energy-density battery, his desire to build an electric motorcycle was gradually extinguished at the beginning, and now he only wants to work **** electric cars.

Electric vehicles will definitely replace fuel vehicles in the future, as long as the problems of charging speed and battery capacity are solved, and now these two problems are directly solved in front of the battery he developed.

And in his mind, once this battery is mass-produced, the impact can be said to be huge,

Many industries will face upgrading. In the fields of batteries, smart phones, mobile devices, computers, etc., it is not an exaggeration to say that it will bring revolution.

After he prepared graphene and developed a complete equipment, he also knocked down the cost of this material from the name of black gold.

What is the main raw material of graphene? As you can tell from the name, graphite.

In Kyushu, the reserves of graphite are huge, and the price is low, just like the raw material sand of silicon wafers.

Although there are not as many reserves as sand, the pencils we use in our daily life can know that the reserves are huge.

Of course, after he developed the graphene preparation equipment, he also had the ability to turn stones into gold.

Even if his research and development journey ends here this time, the results he has achieved are amazing.

After the battery is developed, the relative energy input can also be developed,

The main factor that determines the charging speed is the input channel of the battery, but what else? That is voltage and current.

As long as the battery can stand it, increasing the voltage and increasing the input current can greatly speed up the charging rate.

The greater the charging current and the stronger the voltage, the greater the power of the charging pile.

There are also problems to be solved on the charger. During the high-rate charging process, the charger will also generate a lot of heat due to its own resistance.

This requires that the charger should also use low-loss superconducting materials, or materials that are extremely resistant to high temperatures and have excellent heat dissipation.

Superconducting materials are not in the field that he can touch now, even if he can develop it, he dare not really make it in reality.

And this requires him to start from another aspect, that is, materials with good heat dissipation and high temperature resistance, and the graphene he just developed has once again become the first choice.

It was also when graphene was added to the charger that this problem was solved.

The two most important parts that determine the prospect of this electric vehicle are solved by the graphene he developed.

As for the rest, there are only two problems, one is the motor, and the other is the control system.

In fact, the control system is not a single function. The charging process and battery discharge require the participation of the control system.

When he got out the battery and the charger, he also researched the control system of these two parts.

As for the control system of the whole vehicle, it is necessary to integrate the control systems of all components together at the end to form a complete control system.

This determines that this part is carried out at the same time as each component, so he will tackle the motor next.

This is the main component that determines how fast the car can run, how much it can pull, and how strong it is.

It can be said that whether the batteries developed before or the chargers are good, they all provide services for the electric motors to be manufactured now.

And the manufacture of this kind of motor has also begun to touch the design of the whole vehicle.

The entire vehicle adopts a single-motor, dual-motor, or multi-motor layout, which determines the decisive factors such as the power and appearance of the motor.

His research and development this time has been getting bigger and bigger. From the beginning, he just wanted to build an electric motorcycle, and later added the manufacturing plan of electric vehicles.

Now that the main goal has shifted to electric vehicles, the electric motorcycles at the beginning have no sense of existence.

For electric vehicles, the positioning is still at the mid-to-high-end level. Don’t ask why, it’s all because of the addition of important technologies such as batteries and chargers.

Don't think that these technologies have become bad street after he got them out, it's all because he opened them up that he can achieve the current results so easily.

Now that the positioning has been determined, it is necessary to choose the direction on the model.

The technologies he has mastered now will make any model produced become a hit in the market, of course, if the appearance is not so ugly.

And what he is facing now is the problem of specific positioning. Of course, it is not a bad choice in the middle.

For mid-to-high-end positioning, there are undoubtedly several types of models, such as sports cars, SUVs and the most important sedan.

Of course, these are not the only ones, there are also MPV and light passenger cars, but these two passenger cars are used to modify RVs,

If the price reaches 600,000-800,000, it is still a bare car without modification, and there will definitely not be many sales.

Therefore, MPVs and light vehicles are excluded first, and the rest are easy to choose.

Needless to say, sports cars are too high-end, and there will not be many sales. In the sports car market, there are many models that are trying to lose money and are just a living advertisement for car companies.

So the sports car was also ruled out, leaving only two types.

Both sedans and SUVs must be medium-to-large vehicles in order to be worthwhile in terms of price.

In this way, the range of models to choose is greatly reduced and electric cars are inherently geared towards young people,

Then the coupe is the choice, and the SUV with a sense of technology is in line with his vision.

For a while, there were only two models left. Faced with a choice, he finally chose to extend his hand to the SUV.

He wants to create an SUV with high technological content, high playability, and extremely eye-catching appearance.

And in his heart, there is still a very cool idea deeply buried, but everything will be done after the mass-produced SUV is successfully developed.

What is it? In fact, it was also the inspiration he got from the cartoons of the little days he watched when he was a child.

Who hasn't dreamed of being able to have their own, a highly intelligent formula when they were young?

Thinking of this, some second-year students unconsciously shouted loudly: "The past is not a miracle, and the real miracle begins now."

I was still imagining the scene where I was sitting in the Super Asradar.