Start with a blacksmith shop

Among the several main parts of electric vehicles, the first one to be solved is the battery, which is the main factor that determines the mileage.

There are currently several types of batteries on the market, including lead-acid batteries, nickel-metal hydride batteries and lithium-ion batteries.

Lead-acid batteries are mainly used in current electric bicycles. 95% of electric bicycles running on the streets use this kind of battery.

Nickel-metal hydride batteries are mainly used in hybrid vehicles, and brands such as Ford, Honda, and Chevrolet use this type of battery.

Finally, there is the rising star lithium-ion battery, which is also the main energy source for pure electric vehicles on the market.

One of the products on the market that has carried it forward is the electric vehicle with an unstoppable license plate. Of course, many domestic brands have followed suit.

The most popular one at the moment is undoubtedly a small car from Wuling, which uses lithium batteries.

The most commonly used and most widely used lithium batteries are now divided into two types: lithium iron phosphate batteries and ternary lithium batteries.

So far, these two batteries have not been distinguished from each other. It can only be said that each has its own advantages and disadvantages.

The most important types of batteries are now these three types, and there is also a graphene concept battery on the market.

But this kind of battery is often said to be just a concept. What is widely seen on the market and is said to be a graphene battery should be called a black gold battery.

What is the black gold battery? In fact, the positive electrode material is an alloy with graphene added, and it is not a pure graphene battery. It is just a lead-acid battery with a little graphene additive added to the positive electrode.

A real graphene battery is actually a lithium battery, except that it exists as a negative electrode material in the battery.

Thinking of these types of batteries, of course he had to choose a main strategy direction.

The most suitable lithium battery for electric vehicles is the capacity of the lithium battery, while also taking into account the large discharge current.

Of course, we also need to solve the problem of the number of complete charges and discharges. The number of complete charges and discharges of a general ternary lithium battery can reach about 800 times.

When it reaches 800, its battery capacity may become smaller and become only 80% of its original capacity.

Batteries used in electric vehicles face the release of large currents, which makes them undergo more severe tests.

So after he selected lithium batteries as his research direction, the three problems he had to solve were capacity, high current discharge, and number of charge and discharge times.

With the direction, everything becomes easier. Don't forget that he is a man with an analytical eye.

In the following time, he began to specifically solve three problems. In fact, it was said that it was three problems, but in fact it was only two problems.

As long as the negative electrode material is replaced with pure graphene material in lithium batteries, the two problems of battery capacity and high current discharge will be easily solved.

After these two problems are solved, the unique problem of graphene lithium batteries is that the number of charge and discharge times is not high.

That night, three years passed, and his research on graphene materials had just begun.

The next day during the day, I ran to the company early in the morning, grabbed Liu Xiaodong and ran out.

Liu Xiaodong, on the other hand, looked confused and didn't know what happened, and was already dragged to the company's parking lot by him.

When he finally took a breath and was about to ask something, Li Zhenhua pressed his head and stuffed him into the car he had replaced with a Shelby GT500.

Then before he could react and before he had fastened his seat belt, he heard the roar of his car's engine.

The 5.2L, V8 engine and the unique production of supercharger reached his ears, which made the unobvious flesh on his face tremble with fright, and he hurriedly put on his seat belt.

Feeling the push on my back, my whole body was pressed against the seat.

This was also the first time that Li Zhenhua used this kind of ejection start in reality. The car quickly left the factory and drove towards the south.

Liu Xiaodong finally regained his composure, took a deep breath, and then spoke.

"Brother, drive slowly. I haven't lived enough yet. You can't let Wang Mei become a widow at such a young age.

I don’t want someone to sleep with my wife, use my property, or beat my baby in the future.

Calm down, slow down, slow down, slow down!

Hey, that’s right, that’s right. Why are you driving so fast? "

Li Zhenhua, who was driving so fast, never realized that this fat man actually had some chatty attributes. If he hadn't driven fast this time, he wouldn't have been able to bring out his attributes.

His speed also slowed down when Liu Xiaodong spoke.

"Fat man, let's go buy a car. We have to buy a lot of cars today. We really can't do it if we don't hurry up!

After all, there are quite a few stores to visit! "

After he finished speaking, Liu Xiaodong, who was already confused, became even more confused now.

‘Is he finally willing to replace his old Poussin? I'm so enlightened that I want to buy a car.

well? No, you have to visit a lot of stores. This is taking money instead of using it as money! ’

With this thought in his mind, Liu Xiaodong asked him.

"Is this your nouveau riche attribute? What car are you going to buy?

Let me give you some advice. Actually, just buy a car that can cover your face.

And you see, when I usually go out, doesn’t this GT500 sit at home and collect dust? It's still four circles long. "

While the two of them were talking, the car was approaching the boundary of the Land of Calligraphy and Painting at a very high speed.

"I'm not buying a car for myself this time, I'm going to buy scientific research materials. I just checked it out when I was eating this morning.

The cars in F7 Auto City are pretty good, and the lady over there has a pretty nice voice.

Especially the one that sells the best, let’s go there and have a look.

Try to buy all the pure electric cars today and bring them back! "

At this time, Liu Xiaodong finally knew what he meant. He really planned to buy a car, and the one he bought should be used for disassembly and research.

But the things mentioned in the middle are a bit interesting. What about F7 Auto City, Miss Qiao, etc. This fat man said he didn’t understand it at all!

"I've only been talking to you for a few days, and you're starting to do it now? It's pretty fast!

But didn’t we say we were going to develop electric motorcycles? Why do we need to buy so many new energy vehicles? "

"Hey, they're pretty much the same. The electric motorcycles on the market don't have much reference value.

There are only two that have reference value, one is Don’t Touch My Big Pedal, and the other is Harley Street Car, but it’s not easy to get it in China, so let’s go for the four-wheeled car first.

After I study this thing thoroughly, will electric motorcycles still be a thing?

Feel at ease! "

The two chatted while driving towards their destination.

With his driving, he arrived at the destination in less than half an hour for the sixty-kilometer journey.

After arriving at the destination, a Shelby drove into the car city. It was quite eye-catching. All the salesmen in the car city looked eagerly at the people in the car outside, their eyes shining brightly.

As soon as the two of them entered the car city showroom, a gorgeous sales lady wearing a slim-fitting suit stood in front of them.

Bending down and bowing at the same time, the scene almost made the little stick lose control, especially when the deep V neckline bow belt was leak-proof.

The two of them were dazzled as if they had walked into a concubine selection scene.

Liu Xiaodong on the other side poked his waist and whispered something in his ear.

"I finally figured out why a technician I always made appointments with disappeared when I came to Shuicheng. It turned out that he came to the Auto City to work as a salesperson.

This can be regarded as a way out, it is all about sales, but in the past, I was selling myself, but now I am using myself to sell cars! "

Liu Xiaodong's words made him understand something instantly, and he nodded calmly. It seemed that he saw this plate from an acquaintance on sale.

Then the two of them selected the most beautiful one at the concubine selection site and asked her to take her around the exhibition hall.

And the one who was chosen was actually not at peace in her heart. Of the two, she was the only one chosen.

I don’t know how much trouble I’m going to get into this night, but when I think of the commission from selling the car, I become determined.

I can’t part with my body and can’t sell my car.

In the following time, Li Zhenhua talked about the car model, and the salesman took the two of them to see the Madou 3 that couldn't stop the car, the Han from BYD, etc., and finally looked at the Gameboy.

But for this sales, she has some regrets, because neither of them has said to buy any car so far, and the cars they looked at are all new energy vehicles, so she won't get anything from selling one like this. What a commission!

But now that this is the case, I can only continue to introduce it.

After this round of shopping, when I returned to the front desk of the showroom, the sales girl's legs were almost thin, but they didn't see these two people buying a car.

Just when she was about to speak, she heard the thin man opposite speak.

"Miss, do you remember the car models I just saw?"

The young lady looked at him with some doubts, but nodded anyway.

"Well, you go to your manager to prepare a contract. I want all the cars I saw before."

As soon as he said these words, the expression on this young lady's face immediately changed. This was a huge surprise.

This is much more money than selling a luxury car. How many cars did the other party see just now?

Ten cars or twenty cars? The young lady arranged the two of them and then quickly ran to the manager's office.

The order for so many vehicles also attracted the attention of the manager here, and he ran all the way to the two of them.

Of course, the young lady just now also followed behind. Li Zhenhua looked at the manager opposite who nodded and bowed, and the salesperson behind him who raised eyebrows at him, and suddenly felt that something was going to happen behind him.

He struggled in his mind for a long time, and then said to Liu Xiaodong beside him.

"Fat man, I'll leave the rest to you. It's up to you. If our company's department is short of cars or something, let's take advantage of today and buy them all.

For the cars I ordered, the sales will be counted on the previous sales, and you have the final say later.

I won't stay here any longer. I'll drive out in one of them first. "

After saying this, he walked directly into the exhibition hall.