After sending these people away, Ma Ming had doubts on his face: "Mr. Qin, you just mentioned a few batteries, not hundreds or thousands of batteries. Don't you plan to use lithium batteries?"

"Of course not." Qin Tao said: "If it were a lithium battery, the battery pack alone would cost several thousand dollars. How can they afford it?"

"Then what should we use?"

"Lead-acid batteries." Qin Tao said, "I use about four."

Ma Ming was even more surprised: "Lead-acid batteries are heavy and have low energy density, so they are not suitable as a power source for electric vehicles at all."

Putting lead plates into a sulfuric acid solution can make a conventional battery. This battery is strong and durable and has a large discharge capacity at low temperatures, so it has been used to this day and is still the most commonly used starting battery in cars.

Even if it is an electric vehicle, when the main battery pack is turned off, there must be a small battery to provide additional power to the entire vehicle, such as unlocking the vehicle.

However, lead and sulfuric acid are both dense materials, and the weight of these materials is also conceivable. When the car was first invented, there was a power system such as lead-acid battery, but soon, this battery system

It was replaced by the internal combustion engine.

Now, you actually want to go back?

"But it's cheap." Qin Tao said: "Four lead-acid batteries cost about one hundred dollars, the motor is one hundred dollars, and the controller is one hundred dollars. We can still earn seven hundred dollars for such an electric vehicle system.

"

"Mr. Qin, a $100 motor is expensive. The motors we currently use in electric vehicles cost several thousand dollars." Ma Ming didn't understand cost control, but he also knew that he couldn't afford it at this price.

"Can it be the same?" Qin Tao said: "The motor used in our electric car requires hundreds of horsepower. The motor used in Asan's electric car has more than a dozen horsepower. Moreover, the simpler the structure, the better

good."

Ma Ming frowned: "Mr. Qin, the simple structure is a DC motor, but this kind of motor has brushes, so it will be worn during operation. After a few years of use, it needs to be repaired, otherwise the motor will be broken.

Yes. We use brushless motors in electric vehicles."

A DC motor requires a commutator, which is achieved by contacting the brush with a copper ring. It will wear out over time. When Golden Sun Company was developing electric vehicles, of course it could not use such a simple thing, so it changed to a brushless motor. The rotor only

Responsible for rotation, electric energy is driven through the external coil, but this method also means that the conversion of electric energy is complicated: after all, the external coil needs to use alternating current. The core electronic control system in electric vehicles is through the Hall

The component converts the battery's DC power into AC power.

This electronic control system is also very critical. Some elderly scooters also use AC motors, but they use simple square waves, so they vibrate loudly and make noise. However, electric vehicles use pure sine waves, and this electronic control system also uses

Very complicated.

"In a few years, let's talk about it in a few years, we will use this simplest DC motor." Qin Tao said: "Can it be made for one hundred dollars?"

Ma Ming nodded: "No problem. In this way, the controller can be greatly simplified. Fifty dollars is enough."

Two hundred and fifty US dollars is enough, and there is still a profit of US$750!

But, is it okay to trick Ah San like this? After all, Ma Ming and Qin Tao have relatively little time, and I don’t know that Qin Tao’s favorite thing is to trick Ah San.

"By the way, the casings of the motor and controller must be made larger. Some large heat sinks can be placed to show that these things of ours are made of real materials. The inside of the controller can be designed.

As long as it is opened, the components inside will burn out."

"This can be achieved by adding a capacitor. As long as the cover is opened, the capacitor will discharge and break down the chip inside." Ma Ming said.

Qin Tao nodded: "Okay, that's it!"

"Mr. Qin, will this damage the reputation of our Golden Sun Company?" Ma Ming was a little worried.

"How could it be? Our company is for the sake of our customers. This is the one-thousand-dollar supporting solution. Don't even think about kinetic energy recovery or autonomous driving, as long as it can be driven by batteries." Qin Tao said: "Moreover, our

This solution is also suitable for Asan’s side. At Asan’s level, a scooter is suitable for the elderly.”

"Scooter for the elderly?"

"Oh, I just said casually, okay, let's just arrange this matter like this." Qin Tao said, "It shouldn't interfere with your research and development progress, right?"

"Of course not. We can piece it together using existing technology. This does not have any technical content."

It is simply impossible to want cheap and high-end things. You get what you pay for, and that is an eternal truth.

This matter was decided by Qin Tao. Half a year later, Asan's brand new NANO sedan was launched. It uses pure electric power, is green and pollution-free, and the price is only 3,000 US dollars. It immediately caused a sensation around the world, and countless people opened their eyes.

, looking at this shit-yellow car: it only has a shell and four seats, and no comfort equipment, not even a reflector! People are extremely surprised, can this kind of car be put on the road?

Of course it can, and the speed increase is very strong! However, as long as it exceeds 40 kilometers per hour, it will become a snail's pace to increase the speed, but for Ah San, it is enough!

This chapter is not over yet, please click on the next page to continue reading the exciting content! As for the insufficient battery life, you can completely add a battery at your own expense, up to eight yuan, and it can run for 200 kilometers.

After settling the matter, Qin Tao returned to the room and looked at Nicholas who was drinking tea there: "I'm sorry, my friend, for keeping you waiting here for so long."

"It doesn't matter, our project has almost been discussed. I just talked with Zhao about the detailed design and we are very satisfied. Next, I will hand over the 1144 cruiser to you for modification. I look forward to you giving us a brand new cruiser!"

After several twists and turns, several changes, now, we finally have to see the 25,000-ton giant ship further improved until it is finally commissioned! Nicholas was very excited. Although Qin Tao was not here just now, he and Zhao Ling

After chatting with the idea engineer, he was quite satisfied.

"Well, we will complete the modification as quickly as possible. When the modification is completed, we can also have a joint military exercise together." Qin Tao said: "The data link system we installed above can communicate with each other."

Nicholas nodded, and then thought of something: "Qin, the car we brought back last time had very good test results in our country. Next, should we talk about cooperation?"

"Of course, I can call their person in charge to come over."

"Can we go to their factory and have a look? I want to see the production line."

"Okay, let's go now." Qin Tao looked up at Zhao Ling: "Call them!"

The Changqiang Automobile Factory is in Zhili, and the straight-line distance from the capital is only about 100 kilometers. There is also a highway, and it can be reached in an hour.

For Changqiang Automobile Factory, they never thought that one day, the CEO of Mingzhou Group, which is famous in the country and even in the world, would bring Lao Maozi over to negotiate with Da Mao to open a factory.

When the Mingzhou Group called, the entire factory was alarmed. They cleaned the entire factory area, and the workers were also issued new work clothes urgently. They washed their faces when they needed to wash their faces, shaved when they needed to, and waited until Mr. Qin’s car started.

When you came in, the entire factory area was completely new.

At this time, Old Wei was still just a middle-aged man, exuding vitality. When he saw the car stopped, he immediately ran up and opened the door diligently: "Mr. Qin, welcome to our automobile factory!"

When Lao Wei started his own business in his youth, he often felt complacent, but when compared with Mr. Qin, there was a world of difference. Mr. Qin was more than ten years younger than him, but his group was much larger than his.
Chapter completed!