Technology company, I will become the light of China!

Chapter 364: Solid-state batteries perform well, Qin Long officially decides to help the field

"Is this the new R&D building of Longxing Technology? It is indeed extraordinary!"

"It's really impressive!"

When Qin Long and Qu Cheng followed Chen Xing to the R&D building area, they couldn't help but sigh inwardly when they looked at the three 19-story buildings connected to form a U-shape.

The three of them walked up the stairs and came to the side of the garden fountain. Qu Cheng sighed again: "This design is good. It not only prevents the square from being empty and adds beauty, but also plays a diversion role."

"And purifying the air."

Qin Long added.

Many qualified large company headquarters bases are basically surrounded by green plants. In addition to purifying the air, they provide a close environment similar to nature, improve the mood of employees, and improve work efficiency.

If it were all construction plants with few green plants, the entire base would look particularly like a steel prison cell.

Like Apple's ring-shaped headquarters base, the outer ring is the office area, and the area surrounded by the ring is a "nature reserve" with many animals kept inside.

Thanks to Chen Xing's guidance, the security check process was extremely simple. There was no requirement to check pockets or keep mobile phones.

There is no way that you can't think of, and there is no way that we dare not create here.

"If I want to be more detailed, it is that the viscosity of the electrolyte will increase in low temperature environments and may even partially solidify, resulting in a decrease in the conductivity of the lithium-ion battery. At the same time, the compatibility between the electrolyte, the negative electrode, and the separator will Sex will also get worse.”

Chen Xing also knew that Lingchuan was not good at words, so he nodded slightly and said, "Well, show us the research and development results of the battery pack."

Different from violent testing, this is the final inspection step before leaving the factory, focusing on vehicle simulation driving testing.

Lingchuan walked into the violent testing area, looked at Chen Xing, Qin Long, and Qu Cheng and said: "This is our comprehensive testing area, which mainly simulates various extreme situations. It happens that both semi-solid and solid state battery packs have been Once the sample is assembled, it can be tested and inspected by three people, and any deficiencies can be pointed out.”

The elevator door opens.

After receiving the order, Lingchuan did not hesitate and called two assistants to place the semi-solid lithium battery pack and the solid-state battery pack in two environmental simulation laboratories respectively.

Qu Cheng silently took out his mobile phone and took two photos.

Turning on the device switch, he continued to explain: "The low-temperature environment of lithium batteries will cause the chemical reaction rate inside the battery to slow down, and the resistance of the electrolyte solution to increase, making the lithium ion crossing performance worse, the activity lowered, and the discharge current changed. Small."

It is filled with testing equipment and instruments. There are ten main stations in total, which can be used for ten lithium battery packs to perform cyclic discharge, high and low temperature, water wading and other tests.

Behind every seemingly useless design, there is the designer's hard work.

"good."

The energy battery testing laboratory is rectangular in shape and has three areas in total. The first one to enter is the simulation testing area.

"Please come with me."

What is brute force testing?

collision.

Chen Xing nodded slightly.

puncture.

As the simulation laboratory was locked, Lingchuan explained to Chen Xing and the others: "Now we need to drop the temperature to zero degrees to simulate the battery life in extremely cold weather in winter."

Chief Lingchuan has been waiting for a long time.

The three of them took the elevator to the battery energy laboratory floor.

"this way please."

The environmental simulation laboratory is completely enclosed, and the conditions inside can only be known through the observation window and testing equipment.

"let's start."

Lingchuan continued to lead the way.

"Ding--"

After he finished shooting, Chen Xing greeted: "Please come over here. The three R&D buildings have corresponding entrances, but starting from the second floor, the stairs are connected to each other."

Qu Cheng took the lead and followed Chen Xing into the R&D building.

"President, two seniors." Lingchuan greeted.

The three of them followed his footsteps and walked around for about a hundred meters, arriving at the door of the "Energy Battery Testing Laboratory".

"despair--"

Passing through the simulation test area is the area where the battery pack is assembled.

"Kaka——"

The main responsibility here is to connect the battery modules in series to form a battery pack, and then transport it to the violent testing area at the end.

extrusion.

Lingchuan put his work card close to the identification area, and the closed tempered glass door opened.

"This way, you two, please."

Qin Long praised again.

Lingchuan led the way.

Chen Xing continued to lead the way.

"In addition, lithium will precipitate from the negative electrode of lithium-ion batteries in low-temperature environments, and the precipitated metallic lithium will react with the electrolyte. The product deposition will increase the thickness of the solid electrolyte interface and affect the discharge performance of the battery."

Facing the professional explanation, Qin Long and Qu Cheng kept nodding.

Although they didn't understand the principle, they knew that the battery life of electric vehicles was low in winter, and they didn't think there was anything wrong with what Lingchuan said.

"In addition to checking whether the discharge is normal, the low-temperature test can also visually see the reduction in battery life under extreme weather."

Lingchuan continued.

"Hmm." Chen Xing nodded slightly and asked for Qin Long and Qu Cheng: "Then, are there any differences between our semi-solid and solid lithium batteries with the same power and the same low temperature environment?"

"I just said that extreme cold weather will cause the electrolyte to solidify." Lingchuan glanced at Chen Xing and continued: "There is electrolyte in semi-solid lithium batteries. In other words, in too cold weather, it will Battery life will still be reduced.”

"but!"

Suddenly, he changed the topic: "The impact of extreme cold weather on all-solid-state batteries is minimal, or even negligible."

"so smart."

Qin Long couldn't help but his eyes lit up.

He finally understood why Chen Xing mainly promoted electric vehicles. The development speed of lithium battery technology exceeded everyone's imagination.

"After all, it is an energy innovation product, which is also the advantage of solid-state lithium batteries."

Lingchuan responded.

Listening to Lingchuan's explanation, the two assistants' jaws dropped.

It's not because of the lithium battery technology, but because what Lingchuan said in just a few minutes was ten times or even dozens of times what he usually said in a month.

Normally when they communicated with Lingchuan, they would get at most "um", "oh", "ok", these few words of reply. Today's long explanation made the assistant feel like he didn't recognize Lingchuan anymore.

While Lingchuan was talking about his own lithium battery products, the temperature in the closed laboratory had dropped to zero degrees.

"It's zero degrees."

The assistant reminded.

Lingchuan looked at the device screen and explained to Chen Xing and the others again: "This is the discharge state at normal temperature that was just recorded, and this is the discharge state at low temperature. It can be clearly seen that the resistance value increases at low temperature. The power consumption speed increased by 11%, and Xiaolin continued to lower the temperature.”

"clear."

The assistant controls the device.

The temperature inside the simulation test laboratory continues to decrease. It can be seen intuitively that every time the temperature drops by one degree, the power consumption rate will increase. When the temperature is minus ten degrees, the power consumption rate reaches the 25% range.

What is the concept?
If you can run 1000 kilometers in summer, you can only run 750 kilometers in this extreme environment. If it is dozens of degrees below zero, the battery life will continue to decrease.

The performance of semi-solid-state batteries is already very strong. If you replace it with a traditional lithium battery and drive in subzero weather, the mileage will be basically cut in half.

However, what surprised Chen Xing, Qin Long and Qu Cheng was that the solid-state lithium battery equipment showed that its power consumption rate only increased by 1%, which was a bit too abnormal.

A 1% increase in power consumption speed has minimal impact!

"As you can see intuitively, this is the advantage of sulfide solid-state lithium batteries compared to semi-solid lithium batteries."

As soon as Lingchuan finished speaking, Qin Long couldn't help but ask: "Sulfide?"

Qu Cheng secretly frowned. If they remembered correctly, sulfides are very afraid of humid environments. Can this be made into a lithium battery?
"That's right." Lingchuan nodded and patiently explained: "It is a sulfide solid-state battery. From 1980 to 1990, after the glassy sulfide solid-state electrolyte represented by Li2S·P2S5 was developed, the first crystalline The state-of-the-art sulfide solid electrolyte Li3.25Ge0.25P0.7S4 was also developed in 2001. In the following ten years, glass ceramics and high conductivity sulfide electrolytes were successively developed, but none of them solved the humidity problem. ”

"When sulfide meets water, the internal stable structure will be destroyed. This is a point we need to overcome, and it is also a point we have already overcome."

"Conquered?"

Qin Long was refreshed.

Is it possible that Chen Xing really wasn't bragging and that everything he said in the press conference was true?
"As you can see, entering the test means that it has been conquered."

Lingchuan responded.

"What method was used to conquer it?" Qin Long quickly asked the reason.

This time Lingchuan did not answer, but looked at Chen Xing. How to overcome humidity and ensure the internal stability of sulfide solid-state batteries is a business secret and cannot be disclosed casually.

Sensing the eyes looking at him, Chen Xing nodded slightly in acquiescence.

Qin Long and Qu Cheng, as representatives of the Academy of Dragon Science, can be trusted. Even if they say they know the principle, they will not tell it everywhere. This is the ethics of scientific researchers.

In addition, Chen Xing's original intention to take them on a tour this time was to show off his sword and strive to obtain the license plate for new energy vehicles in the autumn.

Just imagine, if there is a car owner who has not won the lottery number for several years, and suddenly someone says that buying a new energy vehicle does not require a lottery number, he can get the license directly, and can go to the city without restrictions, can this be regarded as a trump card to increase sales?

The answer is yes.

Waiting is often too painful.

Even if they no longer want to drive an electric car, some car owners will definitely choose to compromise when faced with the temptation of urban license plates.

Seeing Chen Xing nodding, Lingchuan did not hide the reason.

"Sulfide solid electrolytes have three classification forms, glassy, ​​crystalline and glass-ceramic."

"The glass ceramic state used in our solid-state battery is obtained by further polishing and low-temperature sintering. It is a metastable phase mixed with glassy and crystalline states. There are a small number of peaks under XRD characterization. Although the conductivity decreases, the internal The material is stable. In order to stabilize the internal chemicals to the greatest extent, we only retain four tiny crystals: orthothiophosphate, pyrophosphate, metathiophosphate and hypothiophosphate, which perfectly solves the moisture problem. "

"Orthothiophosphate, pyrophosphate, metathiophosphate, hypothiophosphate..."

Qin Long murmured to himself.

This is an area he has never touched.

However, as the president of the Long Academy of Sciences and an academician in the field of nanostructure and high-resolution characterization and control of single molecules, he still has his own knowledge base on materials.

"Polished at low temperature, supported by crystals, that's it. It turns out that this is a solid-state battery." Qin Long seemed to have discovered a new world.

If it is the same as what Lingchuan said, then electric cars are really feasible.

In the past, the failure of electric vehicles to develop was purely because domestic lithium battery technology was not advanced enough, not because this field was incompetent.

Now Longxing Technology's lithium batteries are not only semi-solid, but also break through the full-solid state. The conditions for the promotion of electric vehicles are mature and it is the future development trend.

"What's the conductivity like?"

Qu Cheng asked.

There was already a storm in his heart, and his expression was moved. I thought Chen Xing was trying to scare the Americans, but I didn’t expect that he actually had a solid-state battery. It would not be far before the Longguo currency could replace the US dollar. The technology of linking the Longguo currency was really exciting.

"Hold on."

Lingchuan went to the office desk on one side, picked up a document on the desk, walked back, handed it to Qu Cheng and said: "This is the test data and internal composition of the single battery."

As we all know, battery packs are composed of battery modules, and single cells are the basic units that make up battery modules.

Qu Cheng took the file and opened it, and Qin Long also moved closer to read the content.

Name: Glass-ceramic solid-state lithium battery.

Chemical composition: orthothiophosphate, pyrophosphate, metathiophosphate, hypothiophosphate.

Ionic conductivity: 2.7×10-3a
"2.7×10-3a?"

Qu Cheng and Qin Long were stunned again.

If they remember correctly, this value is comparable to, or even far beyond, the ionic conductivity of organic electrolytes.

Judging from paper data alone, sulfide solid-state batteries are simply a revolutionary product, completely outperforming traditional lithium batteries.

"How about the sulfide solid-state battery we developed?" Chen Xing asked as he looked at Qin Long and Qu Cheng who were stunned.

"superb."

"Very strong."

The two of them praised without hesitation.

While they were looking at the file, Lingchuan had already changed the simulation laboratory temperature to high temperature mode, and the temperature began to change.

Fifteen minutes later, the temperature had risen to 37 degrees.

However, it was not enough. After another fifteen minutes, the temperature in the test laboratory had soared to 70 degrees, which was already the operating limit of ordinary lithium batteries.

But it’s not enough!
80 degrees.

90 degrees.

100 degrees.

Qin Long looked at the still soaring temperature and said quickly: "This... this won't explode, right? It's 100 degrees Celsius!"

At a high temperature of 100 degrees, you can use it to fry eggs.

"Don't worry, you two. After several improvements by our battery energy team, the ultimate safe temperature of polymer semi-solid-state batteries is 115 degrees, while sulfide solid-state batteries can operate normally at high temperatures of 300 degrees."

Chen Xing answered.

On the eve of the underworld press conference, he had made a point of learning about his latest results and asked Lingchuan to give him a copy of the report results, which he had already memorized.

"300 degrees?"

Qin Long's breathing became rapid.

Solid-state batteries can actually withstand temperatures of 300 degrees. This is no longer a purely civilian technology, it can be applied to the military!

Qu Cheng was also surprised. They all underestimated the research and development capabilities of Longxing Technology.

It is no exaggeration to say that once polymer semi-solid and sulfide all-solid lithium batteries are applied, it will be a fatal blow to fuel vehicles.

Extreme cold and high temperatures are guaranteed. Isn’t this better than a fuel car?
Nowadays, users who are not optimistic about the development of electric vehicles are saying that lithium batteries are prone to spontaneous combustion and have no safety guarantee.

Because we all know that lithium batteries are fragile, and a slight squeeze and deformation may cause electrolyte leakage and spontaneous combustion.

Cars are different from mobile phones. People have car accidents every day, and there are many serious car accidents. If spontaneous combustion also occurs, how can we ensure the survival rate of car accidents?

But now!
The problem seems to be solved!
Extreme cold and high temperatures can't do anything to them. Is there any pressure from puncture and squeezing?
Qin Long and Qu Cheng had forgotten the time. They stared at the test closely, and their breathing became rapid with the test items.

Drop test items.

Drop the battery pack freely from a height of 1 meter.
Check whether the battery pack shell is complete and whether the battery function is normal.

"boom--"

The two battery packs hit the ground heavily.

The protective steel body is still strong, with slightly dented edges. This project is testing the interior, so after the fall, Lingchuan immediately arranged for an assistant to test the charging and discharging functions.

After a while.

"Charging is normal."

"Discharge is normal."

"pass."

"Next item, vibration test."

High-frequency vibration is used as a test point to ensure that the battery pack can cope with possible bumps and collisions during driving.

After the extreme bumps, still test whether the battery function is normal.

The next step is the puncture project, which uses steel needles to directly destroy the inside of the battery. If an ordinary lithium battery is used, it will 100% cause smoke and fire.

After testing, neither semi-solid nor all-solid-state batteries caught fire. The polymer semi-solid-state battery only emitted some black smoke and did not spontaneously ignite. The sulfide all-solid-state battery showed no reaction at all.

"Puncture project passed."

"Next item, squeeze test."

The assistant put the newly punctured battery pack into the extrusion equipment, and the steel plates on both sides began to shrink and squeeze.

Not a moment.

The outer steel body of the battery has been deformed.

After squeezing another 1CM, the polymer semi-solid-state battery started to emit thick black smoke, but it still did not spontaneously ignite and catch fire, while the sulfide solid-state battery still showed no change.

"The safety performance of the polymer semi-solid lithium battery has passed, but the internal extrusion is severely deformed, and the module can no longer charge and discharge normally."

The assistant reported the situation again.

This result is already excellent.

Aren’t you afraid of spontaneous combustion of lithium batteries?
Punctures, squeezes, falls from high altitudes, high and low temperatures are all fine. What are the disadvantages of electric cars?
Qin Long and Qu Cheng's eyes changed from shock to horror, and then from horror to disbelief. This is simply a revolutionary product.

Just when they were about to speak, Lingchuan nodded slightly and said in a deep voice: "Test whether the solid-state battery is functioning normally."

"clear."

"Ok."

The two assistants immediately went to prepare.

Qin Long looked at the battery pack protecting the dented steel body, and suddenly became uneasy and asked, "Can it still be used after this?"

"Yes." Lingchuan nodded and continued: "The battery pack is composed of battery modules. Damage to a single module group will not affect the internal functions, but the premise is that the battery pack cannot be damaged too seriously."

Qin Long and Qu Cheng looked at each other, a little at a loss.

Today they really saw what rapid technological development is and the possibility of overtaking in corners.

In the shocked eyes of the two people, the assistant reported the test situation: "Two module groups are damaged, and the other modules are normal."

"it is good!"

Lingchuan showed a satisfied smile.

This is the answer sheet he handed to Chen Xing, a nearly perfect lithium battery.

Hearing that the sulfide solid-state battery was so strong, Chen Xing asked the question he was most concerned about: "How many kilowatts of fast charging does it support?"

"There is no upper limit to theory."

Lingchuan said bluntly.

"hiss--"

Qin Long and Qu Cheng took a breath of cold air.

There is no upper limit in theory. Doesn't that mean that as long as the voltage is strong enough and the current is large enough, it can be fully charged in one second?
"now what?"

Chen Xing is more concerned about the present.

Because it is less than three months before the agreed autumn launch, he is more concerned about the selling points of the new car when it is released.

"We haven't had time to test it yet. This requires joint testing with the fast charging laboratory and the thermal dissipation laboratory. It should take a certain amount of time to prepare."

Lingchuan responded again.

"I understand." Chen Xing nodded.

The upper limit of charging power depends not only on the battery, but also on the optimization of the heat dissipation system and fast charging path.

Although sulfide solid-state batteries can withstand ultra-high temperatures, their circuits are not made of room-temperature superconducting materials. As long as there is resistance, electrical energy will be converted into heat energy. If the endurance limit is exceeded, spontaneous combustion will still occur.

"Dean Qin, Mr. Qu, this is the whole process of testing the polymer semi-solid and sulfide all-solid lithium batteries developed by Longxing Technology. What do you think?"

"Brilliant!"

Qu Cheng gave a thumbs up.

Talking about how powerful it is can no longer express his inner shock. Only using the quintessence of Chinese culture can perfectly explain his shock.

Qin Long shook his head and said with emotion: "I thought I had seen a lot, but I didn't expect that I was still a frog in the well. The polymer semi-solid and sulfide all-solid lithium batteries really taught me a lesson. They can indeed be regarded as new technologies." Leave the energy and license matters to me.”

Publicly and privately, he has to help with new energy license matters.

The reason is simple. He saw the possibility of Long Guo overtaking in corners and taking the lead in the automotive field.

Due to the slow start of the industry, Longguo companies in the field of fuel vehicles have paid too many technology patent fees to German and Japanese companies.

If the deadlock can be broken with new energy vehicles, the history books will definitely record it, and maybe the names of Qin Long and Qu Cheng will also be featured on this page.

"By the way." Qin Long remembered something and asked again: "I saw your live broadcast talking about charging piles before. Have you solved this problem?"

"I'm thinking of a solution."

Chen Xing didn't hide it either.

Dragon State is so big that the investment in charging piles is huge, so what he wants to do is to invest in the first, second and third tier cities first, and when he makes money, he will slowly build it in the fourth, fifth, sixth, seventh and eighth tier cities until it covers the whole country.

"You haven't thought about it yet, right? How about this? You start the pilot project in Beijing, Shanghai, Guangzhou and Shenzhen. During this time, I'll go talk to someone. If everything goes well, this may be included in the infrastructure of the State Grid." Qin Long said idea.

"Really?"

Chen Xing felt happy.

If Qin Long can really get it done, then everything is ready, just waiting to be listed on the market.

Qin Long smiled calmly and joked: "I am already old, I will definitely not make fun of you, and today I also opened my eyes, electric cars can indeed be developed."

After a moment of pause, he changed the topic again: "What I said doesn't count. It still needs the nod of the relevant units. You should understand what I mean."

"clear."

Chen Xing nodded slightly.

Whether it is new energy licenses or the construction of charging piles, this is not something Qin Long can decide. He does not have this right.

But the top-level circle is very small, and Qin Long basically knows the people who have the power to make decisions, and he also has their contact information.

(End of this chapter)