Reborn Industrial Tycoon

Chapter 637 Free gift

Brushless motors are not a new invention. As early as the 1950s, American scientists used transistors to replace the brushes of traditional motors. This is considered the most primitive type of brushless motor.

However, any invention needs to be implemented into practical applications to reflect its value.

In the 1950s, there was no motor rotor position detection device, so the brushless motor invented by the Americans had no starting ability at all and could only be regarded as a model.

This is like the earliest platinum filament electric lamp. It does not last as long as a candle and has no use value at all. Later, Edison improved the electric lamp and made an electric lamp that can be used for a long time, so people only remember Edison.

Invented the electric light.

The same is true for brushless motors, which were regarded as useless inventions in the early days. People will not remember that Americans once invented the original brushless motor.

In the 1960s, the rotor position detection device was invented, and brushless motors began to enter the application stage.

However, brushless motors at that time still used transistors. Due to the limited capacity of transistors, the capacity of brushless motors was also relatively small, which was still unavailable.

After the 1970s, semiconductor devices appeared one after another, and brushless motors really entered the application. At that time, the Japanese used brushless motors in video recorders.

But the Japanese quickly discovered that brushless motors are really not as useful as brushed motors. Instead of spending time researching brushless motors, it is more cost-effective to upgrade brushed motors.

As a result, brushless motors have been ignored for more than 20 years. Until the end of the 20th century, brushless motors were still something that grandma did not love and uncles did not love.

The brushless motors at that time had almost no merit except for a longer lifespan.

The structure of a brushless motor is more complex than a brushed motor, and its cost is higher than that of a brushed motor. Its power is not as high as that of a brushed motor, its response speed is not as fast as that of a brushed motor, its braking is unstable, its vibration is large, and there is nothing you can do if it breaks down.

For maintenance, the only option is to replace the motor.

So when it comes to commercial applications, everyone will naturally use brushed motors with mature technology instead of expensive and inferior brushless motors.

By the 21st century, developed countries have been studying traditional brush motors for decades. Their high-level manufacturing, mature technology, and high-performance high-end motors have always been monopolized by developed countries.

China's motor industry is hampered by materials and cannot produce high-end motors.

For mechanical equipment related to power, materials are always the most difficult problem to solve, and this aspect is China's weakness.

Scientific research on materials cannot be accomplished overnight and requires time and accumulation.

For example, if you want to double the hardness of a certain material, you need to increase the hardness by half, and if you want to increase the hardness by half, you need to increase the hardness by a quarter, and so on.

.

Therefore, the research on materials is based on continuous process improvement, and after one experiment, the material performance is improved bit by bit, and the requirements are finally met.

Theoretically, as long as sufficient time is given, China's materials and processes will definitely reach the level of developed countries.

But you are making progress, and others are also making progress. Everyone is running forward at the same speed, and the laggard will always lag behind.

If it develops according to normal conditions, China's motor industry will be like the engine industry. Although it is constantly developing, it will always be left behind by European and American countries.

However, brushless motors have given the Chinese motor industry an opportunity to overtake in a corner.

With the improvement of semiconductor technology and the development of electronic technology, the practical use of brushless motors has become possible.

Especially after the emergence of permanent magnet brushless motors, the performance of brushless motors has surpassed traditional brushed motors.

In the final analysis, the rise of brushless motors is due to the development of materials and technology.

At the beginning of the 21st century, many domestic and foreign companies have realized the practical potential of brushless motors and began to improve existing brushless motors.

The research and development of brushless motors that Li Weidong wants to do is actually to improve existing brushless motors.

For example, improving the stability of brushless motors, increasing the power of brushless motors, enhancing the control accuracy of brushless motors, reducing the noise and stability of brushless motors, etc.

As for the service life and power consumption, there is no need to worry, these are the advantages of brushless motors.

There are no carbon brushes in the brushless motor, and the only place that will be subject to wear is the spindle, so in theory there is no need to worry about wear. Since the parts will not be worn, the service life will naturally be greatly increased.

This is also an important reason why China can overtake the machete in the field of brushless motors. With China's material technology at the time, it was not possible to produce wear-resistant materials, so domestic motors had a high failure rate and short service life.

Printless motors do not need to experience friction, so they do not need wear-resistant materials. This just makes up for China's shortcomings in wear-resistant materials. Therefore, the performance of domestic brushless motors is no worse than foreign ones.

When it comes to the improvement of brushless motors, we have to mention a legendary death row prisoner.

This person, Li Hongtao, was born in the mid-1960s. He was smart and studious since he was a child. When he was fifteen years old, he won the second prize in the National Mathematical Olympiad Competition.

You must know that at that time, the college entrance examination had just been resumed, and many people who were going to college were still unable to calculate functions. Li Hongtao, a junior high school student, could play the Mathematical Olympiad, which showed that he was quite talented.

Later, Li Hongtao was admitted to the Department of Electronics of Zhejiang University. In the mid-1980s, if he could be admitted to Zhejiang University, he would definitely be the best among people.

After graduating from college, Li Hongtao was assigned to work in a state-owned enterprise. However, he was not willing to stay in a state-owned enterprise for the rest of his life, so he chose to start his own business amid the boom in the early 1990s.

However, starting a business requires capital. How could Li Hongtao, who had only been working for a few years, have the money to start a business?

So he tried his best to forge the seals and documents of state-owned enterprises, and withdrew cash from the bank. Then he was arrested and sent to the jail.

When other criminals were caught, they must have panicked, but Li Hongtao calmly memorized the structure of the police station, found an opportunity to escape from the police station, and embarked on the road of fugitives from then on.

This guy is indeed a talent. He needed a car when he was escaping. He just looked at an Audi car key a few times and remembered the structure of the car key. Then he made a copy of the same car key and drove away with the Audi car.

Already.

But the police are not just for free. Li Hongtao was soon caught again and this time sent to the detention center.

But this guy entered the detention center and still refused to stop. He made some simple tools, played an episode of Shawshank, and escaped from the detention center!

The so-called Skynet is very sparse and does not leak anything. How can you escape punishment if you break the law? Li Hongtao was soon caught again.

Originally, he was only guilty of forging documents and committing fraud, and he was reformed after a few years of serious reform. However, because of his two escapes from prison, he was sentenced to death for several crimes.

According to the law, if the death penalty is not executed immediately, it will be suspended for two years. During these two years, if the person behaves well, the sentence will be commuted to life imprisonment. If there is major meritorious service, the sentence will be commuted to fixed-term imprisonment.

Li Hongtao, who was sentenced to death, finally came to his senses and began to accept reform seriously.

While serving his sentence, Li Hongtao applied to prison administrators many times, hoping to obtain some materials for mechanical experiments.

In a place like a prison, top students from Zhejiang University are definitely more scarce than giant pandas, and Li Hongtao's performance in prison was also very good. In the end, the prison approved Li Hongtao's application.

As a result, Li Hongtao invented the brushless electric excitation motor in prison. He not only applied for a national patent, but also won a national award.

The brushless excitation technology used in brushless electric excitation motors is actually not a new technology. It appeared as early as the 1960s, but this technology was used in generator sets.

Li Hongtao used this technology in brushless motors, which greatly improved the performance of brushless motors.

The brushless electric excitation motor invented by Li Hongtao can make the current flow directly through the rectifier into six points without passing through the brushes and collector rings, and then send it to the motor. This is a very important step for brushless motors.

breakthrough.

Although this brushless electric excitation motor has not been widely used, the design principle of this motor was used for reference by later permanent magnet motors.

Later generations of permanent magnet brushless motors use permanent magnet materials to provide excitation, which is essentially the same power supply principle as the brushless electric excitation motor.

The design of using permanent magnets to provide excitation makes the structure of the motor simpler, which also directly reduces the manufacturing difficulty and production cost of the motor. The originally expensive motor has become a bargain.

As for Li Hongtao, his sentence was gradually reduced because of his many meritorious services. After he was released from prison, many companies even invited him to join in scientific research work.

…

The phone rang, and the caller ID showed a long list of phone numbers.

Although Li Weidong couldn't remember such a long list of phone numbers, looking at the area code in front of it, he knew it was his cousin Zhou Rugui who was on the other side of the country.

"Hey, cousin, yes, I haven't contacted you for a long time. Are your uncle and aunt okay?" Li Weidong said.

The two parties first greeted each other's parents and then started talking about serious matters.

"Weidong, this F4 group is so popular right now. The streets and alleys here, and even the bathrooms, are covered with their posters! You are really prescient in choosing them as your spokesperson."

Zhou Rugui paused for a moment, then continued: "Several TV stations here broadcast "Meteor Garden" in rotation every day, and I heard that every time it is broadcast, the ratings are not low.

Even the discs of "Meteor Garden" are now in short supply. As long as there are discs of "Meteor Garden" at roadside vendors, they will be sold out quickly. Many people even buy the discs in order to watch them.

I went to buy a disc player specifically."

Li Weidong knew that the disc Zhou Rugui mentioned was a VCD video disc, and the disc player was a VCD player.

After 2000, VCD developed rapidly and soon replaced video tapes and became a must-have film and television playback device for families.

Due to the popularity of VCD, many small shops specializing in renting out VCD discs emerged at that time. For a few cents, you could rent a few VCDs home and kill a whole night, which was much cheaper than other entertainment activities.

If you get to know the boss well, you might be able to get some extra benefits and rent a few videos that are exclusive to old customers.

So Li Weidong asked: "Cousin, are these discs you are talking about genuine or pirated?"

"How can there be genuine copies sold at roadside stalls!" Zhou Rugui continued; "Anyway, "Meteor Garden" is broadcast on TV every day. Many people who make pirated discs record it directly from the TV and then copy it to

Among the discs, some discs were produced in a hurry, and even the commercials inserted in the middle were not cut out!"

"So that's it." Li Weidong then asked, "Would it affect the clarity of the picture if it were recorded directly from the TV?"

"Of course it has an impact. The recording and broadcasting are definitely not as clear as the original source. Not only is the picture not as clear as the original, but even the sound quality is not as good as the original film. But I can still watch it," Zhou Rugui said.

.

Hearing this, Li Weidong already had an idea in his mind, and he asked: "Cousin, can we buy the original source of "Meteor Garden"?"

"It shouldn't be a problem." Zhou Rugui answered.

"Okay, help me buy a set of original film sources." Li Weidong said.

"What do you want that thing for? Do you plan to introduce "Meteor Garden" to the mainland?" Zhou Rugui asked in confusion.

"Introducing "Meteor Garden" is what the TV station should do." Li Weidong smiled slightly and then said: "What I want to do is to let more people see this TV series."

…

After ending the call with Zhou Rugui, Li Weidong immediately dialed Zhong Yemao's phone number.

"Hey, Lao Zhong, do you know anyone who makes pirated VCD discs?" Li Weidong asked.

"Chairman, it is illegal to make pirated VCDs!" Zhong Yemao replied.

"Just asking if you know him?" Li Weidong said directly.

"We know." Zhong Yemao replied honestly.

"I know that Lao Zhong, you must have connections in this area." Li Weidong continued: "The person you know who makes pirated VCDs, does he have a large production scale?"

"Look at what you're asking, if the production scale is not large, it's impossible for me to recognize you!"

Zhong Yemao lowered his voice and continued, "The one I know is produced directly on the production line. Not only the discs, but also the packaging is very exquisite, no worse than the genuine ones."

"How about setting up a production line to make pirated VCDs?" Li Weidong asked in surprise.

"You underestimate those who make pirated copies!" Zhong Yemao replied: "Those with hundreds of recorders are all small workshops. The one I know has a production line worth two million.

.A conservative estimate is that he can produce 40,000 to 50,000 pirated VCDs a day."

"Investing two million in a production line is not as good as producing microwave ovens. It is a serious business after all. Why make pirated VCDs?" Li Weidong sighed lightly.

"My chairman, if he were to produce microwave ovens, he would have been crushed by our puppy appliances!" Zhong Yemao laughed and continued; "Don't underestimate this pirated VCD, the profits are huge!

Even if he earns 50 cents from a pirated VCD, if he produces 50,000 copies a day, he can earn 25,000. In 80 days, he can earn 2 million, which is enough to make back the cost of the production line! This is definitely better than producing microwave ovens.

The money comes quickly."

"That's right. My microwave oven production line will not recoup its cost in eighty days." Li Weidong replied.

Zhong Yemao on the phone then asked: "Chairman, why are you asking about this? Have the movies you invested in been pirated? Do you want to find out who made pirated VCDs?"

"I haven't invested in movies recently. Besides, I don't miss the box office losses from piracy." Li Weidong paused and then said: "I have the source of a TV series here, and I want to give it to those who make pirated VCDs.

."

"Send it off?" Zhong Yemao was suddenly confused.

"Yes, it doesn't cost a penny, it's free!" Li Weidong replied.

"It's cheap but not good. What you're giving away for free shouldn't be a very exciting TV series, right? I guess even if you give it away for free, those who make pirated copies may not be willing to make it into VCDs, because they're afraid they won't be able to sell it!" Zhong Yemao

Asked.

Li Weidong smiled slightly: "Don't worry, this TV series I sent will definitely become popular all over the country once it is broadcast!"

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