Siheyuan: Starting from a fitter

Chapter 230 Successful research on lithium-ion batteries

Time soon entered early June. With the help of Li Guocheng, who knew the general direction, the materials team achieved phased results.

One day, a horse worker knocked on the door of Li Guocheng's laboratory.

"Good news, based on your last experiment, we found a stable lithium-ion anode material ratio. By incorporating this ratio of phosphorus and cobalt, the energy density of the battery exceeds 100Wh/kg.

We have tested 10 samples for 500 times of charging and discharging, and the maximum performance degradation is 15%."

The excited horseman said the above conclusion with a trembling voice and handed over the ratio data table.

"Great, prepare 100 battery packs for me with this ratio, each pack is 10AH. Is there no problem?"

Although the energy density of the battery cannot be compared with that of later generations, after all, this is an epoch-making initiative. With it, Li Guocheng can do many things.

The horse worker hesitated for a moment, thinking that it would be best to interfere less with the boss's affairs. "Okay, Chairman, we'll be ready within a week."

"Chen Yuhe, call Mr. Chen over."

A few minutes later, Chen Li came to Li Guocheng's laboratory, and he gave Chen Li instructions in front of the horse worker.

"Mr. Chen, once Ma Gong and others verify that the parameters of the lithium-ion battery meet the requirements, we will reward them according to the specifications of the semiconductor team. At the same time, we will arrange for the patent team to apply for a patent."

After hearing Li Guocheng's words, Ma Gong's face turned red. Money is very important, but being valued by the company makes them more excited to engage in research.

Then he turned a little shy and said, "Chairman, this is not good, after all, it is improved based on your experiment."

"Don't be embarrassed, real innovation is based on the research results of predecessors and is improved. Moreover, I also learned based on your research."

"You don't have to be humble. When the time comes, you can just add the chairman's name when signing the patent."

This is Chen Li, who knows what Li Guocheng needs.

"Okay, I understand." Ma Gong suddenly understood and left the laboratory happily.

Two days later, Li Guocheng, who had obtained stable experimental data, confirmed their results.Immediately before noon, most employees of Longhua Science and Technology Company knew about the great achievements made by the materials laboratory, and also knew that they had been rewarded by the semiconductor group.

From this day on, Li Guocheng temporarily put aside the research on batteries, and Zhu asked Ma Gong to consider product application design.He switched to designing a small high-temperature furnace himself.

With previous experience, the high-temperature furnace designed by Li Guocheng is not only compact, but also has extremely high heating and heat preservation efficiency, and the internal space is guaranteed to be able to accommodate 4-inch wafers.

Based on possible subsequent needs, a compact chip packaging equipment was redesigned.

The design principle is to operate it manually if possible, because he trusts his own hands more.

With sufficient resources, these things were designed and produced within a dedicated week.

The high-temperature furnace and packaging equipment shining with original metallic luster are now placed on the secret laboratory. From now on, the secret laboratory will finally be put into use.

Because there is no electricity in the secret place, when I was in the rolling mill, I thought about designing high-performance diesel generators. Later, when the rolling mill laboratory was established, a lot of work was put on the table, so I gave up the research and development of diesel generators.

Now in Xiangjiang, some high-tech products cannot and dare not appear in Longhua Technology.I once thought about placing it in the basement of the villa, but considering confidentiality and safety, I finally chose the secret place.

The reason why materials research chose to develop batteries is because there is an urgent need.With the blessing of Qian's ability, it is finally possible to activate the secret laboratory.

Looking at the equipment on the test bench, Li Guo was overjoyed.

Sitting in front of the test bench, he is holding a 3-inch wafer in his hand, on which is the micro-processed KT32F102M that he has completed by micro-carving.There are 108 in total, which is twice as dense as the finished product using the latest domestic photolithography technology.

This is the power of micro-carving under the blessing of mind power. It does not require a mask, a photolithography machine, or an etching machine, and can directly micro-carve a three-layer structure.

Now the wafers are available, only the Dongfeng battery pack is owed.

Today's battery packs are simply connected together with wires, without control chips and circuits, so the unbalanced operation of the battery makes it very easy to be damaged.

For safety, Li Guocheng protected each set of batteries in a double-layer steel plate box, with fine sand sealed between the double layers.Even if spontaneous combustion occurs, it will not threaten surrounding items.

At some point, a piano was added to Li Guocheng's practice room. Compared with the surrounding equipment, it looked nondescript.

His reason is that he doesn't feel embarrassed no matter how he handles his own space.

Today I was really worried about waiting for the battery pack, so I ran here and started playing the etude "Für Elise".

When playing the piano, the fingertips of both hands lightly touch the keys, constantly beating with the melody.The notes swayed in the air and intertwined together, like an invisible picture, which made Li Guocheng feel as if he was in it for the first time.

At this moment, he felt that his soul was gently touched, and a kind of physical and mental pleasure flowed in his heart.The whole process is a quiet and beautiful enjoyment, intoxicating, as if you are talking to someone.

The song ended, the door was pushed open, and Ah Rong, Su Junrou, and Chen Li walked in.

"Aaron, did you play the record just now? It's impossible! How can you, a big guy with picky feet, play with the piano?" After Aaron finished speaking, he looked around strangely.

Su Junrou clapped her hands lightly, her eyes softened, "Yes, I originally wanted to remind you that it's time to practice the piano, but I didn't expect that you would practice here in private. And after listening to your playing, I'm ready to start practicing. The only thing missing now is Lots of practice”.

"Haha, to celebrate your graduation, let's have a drink together tonight," Arong said happily.

The beautiful teacher did not refuse this time. Li Guocheng hesitated a little and called Chen Li.

In a long-established Italian restaurant in Central, four people sat together. For today's main meal, Li Guocheng ordered Florentine T-bone steak, Chen Li and the beautiful teacher ordered spaghetti, and Ah Wing chose Italian tripe buns.

Several people whispered music and ate their own delicacies.

At this time, Chen Li was acting a little reserved. Li Guocheng had taken her to eat at a higher-end restaurant than this one, but today she was clearly holding back her shoulders, being taciturn, not good at talking, and just lowered her head to eat.

Li Guocheng smiled, and regardless of etiquette, he cut a small piece of steak and put it on her plate, then picked up a chopstick and put it into his mouth.

Chen Li was stunned for a moment, then raised her head and glanced at him in surprise. A smile appeared in the corners of her eyes for a moment, then her face turned red and she lowered her head to eat.

The people opposite and next to him were obviously stunned. Ah Rong looked helpless, and Su Junrou's expression seemed even colder.

It's not that Li Guocheng didn't have any ideas.After all, a big beauty has been together for so long, from the beginning of the routine, to acceptance, and now to the appreciation.

When the two were alone, they gradually cultivated some tacit understanding. Li Guocheng could play the effect she wanted with a single gesture from her. Every encouraging smile made him a little fascinated.

As they get along with each other for a long time, he gradually understands that their daily life is the result that Uncle Arong and her parents want to see.

Ah Wing even spread the word that as long as he gave up his previous marriage, they would facilitate this marriage.For Li Guocheng, this is completely unacceptable.

Because his heart is in the north, where he has his lover and lovely daughter.

And she also has a Platonic view of love, pursuing spiritual communication and rational spiritual pure love.This made Li Guocheng even more afraid to approach.

Isn’t it fun to do scientific research?Women will only affect the speed of his research.

After the meal, Su Junrou said, "You have graduated," and then turned and left the restaurant.

Ah Rong said a dumbfounded hello and hurried after him.

"Don't you regret it?" Chen Li asked quietly, standing next to him.

"It's enough for me to have you." Li Guocheng put his arm around her shoulders and left the restaurant.

Looking at her sweet expression, Li Guocheng wondered if she understood them as them (mother and son), not them (and them in the north).

Li Guocheng didn't point it out, anyway, she already knew that there was his family in the north.

Now he has made no secret of such a chaotic relationship and has become at ease with it. Is this a sign that men become bad when they have money?

Bah, scumbag.

A week later, Li Guocheng got 200 sets of batteries. This was because he thought it might not be enough, so he asked for 100 more sets.

Each battery pack is as big as a lunch box.In fact, the battery takes up less than one-third of the volume, and the rest is the protective shell.

Li Guocheng used a wooden frame to combine all the batteries and then connected them to a high-temperature furnace.

Through testing, the high-temperature furnace can work continuously for 4 hours once fully charged, which is enough.

Li Guocheng couldn't wait to put the elements that needed to be doped into various locations on the wafer. After checking that everything was correct, he carefully put the wafer into the high-temperature box.

Half an hour later, he took out the entire wafer without using any instruments. His subtle mind power was the best inspection tool.

After another hour passed, only one chip on the edge was poorly doped and became a defective product, while the other 1 chips were all qualified.

Next, binding and encapsulation are very simple. The only disadvantage is that it is time-consuming.

A week later, all 107 microcontroller chips KT32F102M appeared on the shelves of Secret Lab.

By mid-July 1973, sufficient samples of all required ADCs, DACs, high-speed operational amplifiers, and small high-power IGBTs had been produced.

The circuit board is a copper-plated plate manually carved by Li Guocheng and a 4-layer board made of hot-pressed electroplating.

In order to make circuit boards, Li Guocheng redesigned small hot pressing equipment and electroplating machines.

Looking at the special control circuit board for the battery pack, Li Guocheng is full of achievements.Replace the damaged battery pack and connect the dedicated control circuit board. All circuit boards are interconnected through 485.

The entire control system can monitor the working status of the entire battery pack, balance the current, limit the maximum value, alarm at any time, automatically cut off isolation and other operations.

If this control system appears in reality, it will definitely cause a sensation.No matter how powerful Li Guocheng is, he will inevitably end up being locked up for study and sectioned.

July 1973, 7, was a great day for Li Guocheng.Chen Li is pregnant.

Li Guocheng also discovered that, perhaps because of his Qigong practice, it was much more difficult for Li Guocheng to get a woman pregnant than for ordinary people. This was verified by all three women.

He doesn't know the specific reason, but he won't give up the technique just because of the benefits.For so many years, as long as there are no special circumstances, he has been practicing diligently in morning classes every day.

On the same day, he received a call from Ah Rong. Su Junrou flew to Sam Country to participate in exchanges and further education between schools.

Li Guocheng, who was in a complicated mood, came to the practice room and sang his favorite "The Love of Life" while playing the piano.

The next day, Li Guocheng threw the IGBT patent draft to the patent team.

Now a mechanical equipment laboratory has been added, a suggestion made by the semiconductor laboratory.

现在4个实验室已经增加到了50人，材料组最多，有20人；半导体组增加到10人；机械组现在是5人；游戏组增加到15人。

With the help of Li Guocheng, the tasks of each group rarely took any detours.When he encounters a problem, he can find a solution under normal circumstances if he is personally involved.

Therefore, Li Guocheng arranged the tasks and they were all carried out smoothly.

Finally, at the end of August, when Li Guocheng completed the secret experiment, he heard the news he wanted to hear most: the semiconductor monocrystalline silicon had broken through the 8-inch process.

In mid-December of the same year, news came that the production line had been successfully counterfeited.In fact, it is no longer appropriate to say that it is counterfeiting.

The current production line uses a 4-inch process, and the photolithography accuracy has been increased from 100um to 20um. It is not an exaggeration to say that it is a brand-new production line.

When he applied to the Department of Science and Technology to build a second production line, it attracted the attention of Director Butler. His first reaction was that Longhua Technology had plagiarized. He originally came to Longhua Technology with anger and disappointment.

But when I saw that the new production line was completely different from the original production line, I was deeply shocked.

When I learned about the specific parameters, I already believed in my heart that this is Longhua Technology's own product.

When he sent the information back to Robin Hood Country, he was full of doubts at first.After several rounds of quarreling, the arrogant Robin Hood people issued an order requiring Longhua Technology to submit a full set of drawings and information, and temporarily banned manufacturing and selling.

When receiving the notice from Director Butler, all the senior officials of Longhua Technology were extremely angry and expressed their determination not to comply.

"Everyone be quiet. That's the end of today's meeting. Do whatever you need to do. I'll handle the next thing."

Li Guocheng had to suspend the meeting, because everyone was influenced by emotions and could no longer form a solution.

At the same time, an order was issued to the entire company that some of the company's new technologies must not be made public until patent approval has been obtained.

Then he immediately found Jingjiang Law Firm.

When lawyer Miller heard the whole situation, he became excited on the spot. He knew that this was an opportunity to make a name for himself.

"Mr. Cheng, don't worry, we will handle the matter this time and their request is illegal. I will definitely give you a satisfactory answer."
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I would like to use a long chapter to apologize to my book friends. Recently, there have been a lot of things going on in my unit, so the update time has become irregular. Please bear with me.

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(End of this chapter)