Great Power Technology.

Chapter 228 Two 10 minutes, solve all your problems

Yangcheng, inside the GAC Aian battery factory.

In the laboratory, several researchers are analyzing the SEM of the pre-embedded lithium nano-silicon material required for the battery.

"From this picture, the particle size of the Li3N we obtained is 0.5-3 microns, the particle size of SiO0.9@C is 1-5 microns, and the particle size of PAN@S is about 200 nanometers, but the distribution Relatively uneven and did not meet the technical requirements of the operator's manual."

"Look at Figure 6 at the back. This is the cycle performance graph of PAN@S for lithium. This graph shows that the current density of this composite positive electrode is only about 600MAH in the first cycle, and only 400MAH after [-] cycles. Electrochemical Very poor stability."

"If this technical indicator is followed, the battery we will make later will not reach the predetermined target of 900WH, and may not even reach 700WH."

"What's more terrible is that the energy decay of this battery is too serious, and the problem of sulfide dissolving in the electrolyte still exists, and the impact is not small."

"Everyone, all of our laboratory operations are strictly in accordance with the technical manual, but the final results obtained now are completely inconsistent. This is a very serious problem. I would like to ask you to check your own labs again. process, confirm whether there are any missed operations or wrong operations, and if there are any, bring it up as soon as possible to restart the trial production, and don’t press until something goes wrong at the end before finding someone to take the blame.”

"I hope you all make it clear that this project is not a project of our company, but a national project! No matter what mistakes you make during the process, as long as you can correct them in time, it is not a problem. But if these mistakes are not Discovery, and finally lead to the delay of the project, that is a serious dereliction of duty, understand?"

Several researchers on the side looked heavy. They looked at the analysis charts on the screen with frowning eyes, flipping through the operation records in their hands, but after a few minutes, no one found the problem.

A young researcher said:
"Team leader, my process has been checked countless times, and I really can't find any problems. Please rest assured about this. Although I am young, it is impossible for me to be confused about this kind of thing."

Hearing his words, other researchers also echoed.

"Yeah, I checked mine too, and I really didn't find any mistakes or omissions. Moreover, I have checked not only the process, but also the materials. They are all materials that meet the requirements. Even after the last problem, we The material has also been analyzed specifically, and the accuracy of the composition determination has been verified, so it must be reliable.”

"Me too. I can't see the problem, but I always feel that something is wrong."

"Could it be that there is a problem with the craft itself? To be honest, when I took on this project, I deliberately compared several mainstream crafts now, and the difference with the one we have is quite big."

"I also think there may be problems with the process—or the process itself is fine. Could it be that there are errors and omissions in the documents we got? I have gone through the entire process of the process, except for some that have no empirical basis. The process is unexpected, and all other steps are logically self-consistent, and I feel that the possibility of stability and errors is relatively high.”

Hearing the researcher's words, the team leader also began to show a hesitant look on his face.

Indeed, as they said, he himself has controlled the overall process to the second level, and he is also confident that he has never missed a single step, and the materials they use have also been checked , or even specially dispatched from the reserve, it is almost impossible to have problems.

However, now the facts are indeed in front of us:

The performance of the battery is completely substandard, and this substandard is not within the range that can be explained by the error rate.

To put it bluntly, the things they created are completely different from the things described in the technical documents.

If the battery described in the technical documentation is compared to a supercar, then what they built can only be regarded as a bouncy car at best.

Although this bouncy car can run two thousand kilometers, it is far behind a sports car in terms of speed and comfort.

"Will there be a problem with the transition metal composition? Have you tested the oxidation data of the metal before using the transition metal? If it is exposed to a non-vacuum environment for too long, even a very thin layer of oxide layer will affect the overall compliance. performance of the material."

"Everything has been checked, everything is vacuum prepared, there is no problem."

After checking this, the team leader felt that he had basically done everything he could do.

All the possible problems he could think of had been ruled out, so there was only one possible answer: there was a problem with the craftsmanship.

Thinking of this, he said:
"You first conduct a trial production in the laboratory again. This time, remember to take the temperature conditions into consideration-there is no such requirement in the technical manual, but it may have an impact."

"Team leader, this shouldn't be the case. If the preparation conditions are so harsh, then this product has no potential for scale. Why don't we report it to our superiors first?"

The group leader nodded and replied:

"I will report it to my superiors, but you should do the actions that should be done first, and try to eliminate all wrong answers."

While speaking, he turned and left the laboratory.

He now wants to immediately hold an emergency meeting of the core management of the project team to reflect the situation facing the laboratory.

The time is very tight. In less than 10 days, this battery must be put into production. According to the original plan, it must also be adapted as the battery cell of their latest magazine battery.

This adaptation process takes at least three days, so there are less than three days left for them.

Thinking of this, his pace involuntarily quickened a bit.

Two hours later, the General Technical Office received the news that the trial production of the battery had failed. After confirming that the problem could not be solved, all relevant technical documents and operation records were submitted to Ye Zhou, waiting for his further guidance.

Everyone thinks that this is a difficult hurdle to overcome, and even Chen Hao has already started to start the backup plan, preparing to delay the release time of the battery.

After all, in the past year of his cooperation with Ye Zhou, no matter which project it is, the technical documents received by the project team have never had any problems. Various difficulties in other aspects, but the documentation has never been missed.

But this time, based on the conclusions of all current experts, they have to believe that this is a technical error.

".Such problems are unavoidable. Ye Zhou has provided so many breakthrough technologies in a short period of time, and the span is huge, and the errors are still being cleaned up."

"Also, I have already communicated with the relevant staff. In fact, even if it is released according to the incomplete version of the battery they are currently completing, it is still a big breakthrough for the international battery industry."

"If we can have more time in the future to improve and optimize the technology at hand, it will not be difficult to achieve the goal that Ye Zhou proposed at the time."

"However, we haven't started this step yet, mainly because we don't know how difficult it is."

After listening to Chen Hao's words, the star emblem man on the screen nodded and replied:
"The situation is clear. From my point of view, this is not a failure. At most, it did not meet the expected goals."

"We'll wait for Ye Zhou's reply on this matter and see what he has to say. However, if he can't come up with a solution in the short term, we shouldn't put too much pressure on him."

"There are some things we can rely on him, and some things we have to work hard on our own."

"clear."

Chen Hao nodded in response.

"That's it. You go down and give Ye Zhou a call. According to what I know about him, he should have read all the documents you submitted by now."

However, before he finished speaking, Chen Hao's cell phone rang on the opposite side.

Chen Hao glanced at the above contact display, and said:
"It's Ye Zhou."

"Come on, I just want to listen to it."

Chen Hao hummed and picked up the phone.

Before he could speak, Ye Zhou's calm and exhausted voice rang from the other end of the phone:

"The quality of S powder and polyacrylonitrile is not linearly related to the proportion of ethanol required in the ball milling process."

“100G的S粉需要400R研磨6分钟，但是200G就不是400R研磨12分钟那么简单了。”

"There is a coefficient in it. Every time the grinding time and speed increase by one level, the ethanol blending ratio increases by more than one level. Similarly, the decrease is the same."

"Let them check this process by themselves, and calculate the coefficient of the ratio of rotation speed and grinding time to ethanol. Basically, the problem is not big."

"Mr. Chen, next time you make it clear to your engineer that some things are not just copied from the technical documents. This point this time is indeed a very subtle detail that is easily overlooked. However, if you are willing to take the time to check the whole process It can still be found if the manufacturing logic is used instead of just inspecting the process."

Chen Hao listened to Ye Zhou's words with a little shame, and then replied:

"This is my problem. I asked them to process it 100% according to the document through the General Technical Office. I didn't think of this difference. Sorry, I will invite experts to guide me before I make a decision next time."

"Well, it's better like this. We don't give out technical documents to completely stifle the creativity of our engineers. We should pay attention to this issue in the future, especially when the General Technical Office represents the will of the country and the engineers in the enterprise represent the will of the enterprise. , they will have more concerns in the implementation process."

"We not only need to guide, but more importantly, guide. Otherwise, if all the small things have to be done by the state, how can we have so much manpower and material resources? It's okay, let's hang up."

With that said, Ye Zhou hung up the phone.

Chen Hao looked at the star emblem man on the screen, who smiled and said jokingly:

"Look at you, you made a bureaucratic mistake and were criticized, right?"

Chen Hao smiled embarrassedly, and replied:
"Then I'll go and notify the company now. It's really my fault. The company has already discovered that the document may be unclear, and we haven't made a decision to let them improve it on their own."

The star emblem man nodded slightly and said:

"Grow from mistakes. The General Technical Office has just been established, and there must be problems in both overall leadership and executive management. Take your time, it doesn't matter."

After all, the Xinghui man also hung up the video call.

Chen Hao picked up his mobile phone to call GAC to notify him of the situation, but when the screen of the mobile phone turned on, the call record between him and Ye Zhou automatically appeared.

At 17:15, he informed Ye Zhou that there was a problem with the trial production.

At 17:36, he received Ye Zhou's solution.

Only 20 minutes have passed since the problem appeared and the problem was solved.

(End of this chapter)