For the gift, start research and development of graphene batteries

Chapter 83 The battery is so difficult to disassemble
In carbon-based batteries, there are many unique technologies.

These technologies were inherited by Jiang Ming combined with the technology tree system. It is quite difficult for ordinary technicians to understand them thoroughly.

These technologies are carbon-based batteries, unique encryption points.

Jiang Ming has already packaged these key points to Wang Yangming.

In other words, no matter who it is, if they want to produce carbon-based batteries, they cannot bypass the Xiaguo New Energy Industry Association.

This is the reason why Wang Yangming dared to send carbon-based batteries to China so early.

Jiang Ming even suspected that this could not be Wang Mingyang deliberately stimulating the international lithium battery giant.

There is such a possibility.

Although the carbon-based battery was developed by Xia Guo, Jiang Ming estimates that it is impossible to monopolize this technology.

As far as graphene batteries are concerned, they are only partially improved. Compared with traditional batteries, their performance is higher, and other lithium battery giants can still cope.But it is rare to see graphene batteries that are so high.

This high has reached the conditions for generating upgrade iterations.

Traditional lithium batteries, like the old ones, are not suitable for this era and must be replaced.

In this tide, Xia Guo should seize this opportunity to make the entire industry bigger and stronger.

As for monopoly, it is not realistic to completely cut off the connection with other lithium battery giants.

Just like the lithography machine, although he knew that Xia Guo lacked it and was under the control of others, he didn't completely cut off Xia Guo's chance to get the lithography machine.

Of course, you don’t need to think about the latest version of the lithography machine. It is also good to have the previous generation for you.

This is the world, not black and white, the relationship between the two sides is dependent.

The dividends of carbon-based batteries must be partly given to international lithium battery giants.

Xia Guo's enterprises are still counting on opening up the markets of these countries. It is unwise to completely offend them to death.

Of course, these are not Jiang Ming's concern.

Even Jiang Ming didn't know what he could get after leading the research and development of carbon-based batteries.It depends on Wang Mingyang's arrangement.

Jiang Ming believed that he would be satisfied with Wang Mingyang's behavior.

When Xia Guo was celebrating the announcement of the carbon-based battery, on the other side of the ocean, in Boston Company, Lao Bai looked at the report sent by his subordinates, and his face was very ugly.

I thought that the actual carbon-based battery could be copied successfully in a relatively short period of time. Who would have thought that the technical team ran into trouble not long after the start.

"You tell me the battery won't turn on at all?"

Lao Bai growled at his subordinates.

"Yes, we tried everything, but in the end we couldn't find a way to open the battery."

"Then violently open it, and I want to see the internal structure of this battery."

Lao Bai said loudly.

"Yes, if you open it violently, it is very likely to damage the internal structure of the battery and cause irreversible damage to the battery. And if you analyze it again, it may not be that simple."

The subordinate said so.

"Treat it like this first, to ensure the integrity as much as possible. In this way, you take me there, and disassemble it now."

Lao Bai was very anxious.

You know, since Xiaguo Enterprise has produced samples of carbon-based batteries, it means that carbon-based batteries will soon be mass-produced.

Once mass-produced, these lithium battery giants will soon be abandoned by the market.

Thinking of the predicament he was facing, Lao Bai couldn't sit still. He went to the laboratory and stared at the technicians, hoping to get the data as soon as possible.

If there is really no other way, you should seek a way out early.

In the laboratory, technicians are processing samples of carbon-based batteries.

Although this kind of reverse decomposition and development work has not been done less, but carbon-based batteries, Boston's technical staff still encountered trouble.

Generally speaking, once a lithium battery is packaged, after the step of makeup, the battery is charged.It is extremely dangerous to disassemble it again.

Therefore, before disassembling the charged battery, the battery is completely discharged first, so that the battery is no longer charged.

In this way, even if the battery is short-circuited during disassembly, there will be no fire or smoke.

The first step is to discharge, and the second step is to destroy the sealing of the battery, then find a breakthrough and dismantle the battery core.

The focus of battery reverse research is to analyze the production process of the battery core, analyze the material composition of the positive and negative electrodes at the same time, and then look for similar materials to make imitations.

For ordinary lithium batteries, dismantling may not be so troublesome, but for carbon-based batteries, Buston technicians did not find a breakthrough.

The finished battery is a three-sided case, leaving only a hole for the case on one side.After the battery core is put into the casing, the battery is packaged, and then vacuumized and injected with electrolyte.

This process requires the packaging of the battery to be very strict.

In general packaging, a sealant is used for packaging.

If you want to disassemble it, it is relatively simple.

Heat the sealed sealant to a certain degree to make its seal weaker, and then use a special tool to open its seal.

Finally, this small seal is further expanded, and finally the goal of complete disassembly is achieved.

In the laboratory, various batteries are often disassembled. Whether it is Boston's own battery or batteries from other battery manufacturers, the methods are similar.

If there are too many dismantling, it is not difficult for the technicians in the laboratory to disassemble.

It's just that Boston's technicians searched for a long time to disassemble the carbon-based battery, but they couldn't find the seal.

Generally speaking, the cell sealant will definitely undergo structural changes at high temperatures.Even if it is not obvious, it can be found through a magnifying glass.

But this time, even if the temperature was increased to 200°C, the seal was still not found.

It seems that the entire battery cell of the carbon-based battery is integrated, and there is no trace of loose structural glue.

"Look, look carefully, I don't believe it, this battery is really one piece!"

Lao Bai said to the technician a little angrily.

"Tell me, could this be the sealing line?"

A technician said in a low voice.

I saw the technician pointing at the bottom of the carbon-based battery, and said through a small gap.

"What nonsense, this should be the full welding mark left when the battery case was produced, and it should not be the sealing position."

Said the technician next to him.

"But look, this weld is so long, it looks like it."

"Hey, it really is."

"Could it be that after production, use a welding machine to seal the battery, and just weld it on?"

Some technicians guessed so.

Not to mention, this speculation really has a certain basis.Otherwise, it is impossible to find the seal of the battery after searching for such a long time.

"Seal the battery and reimage it under a magnifying glass to compare the welds of the two."

There is a technical supervisor, so it is arranged.

Then, two comparison pictures of huge welds were presented in front of everyone.

"Here, you see, there are a total of two welds on the battery case. This weld is on the side of the battery case. According to our previous guess, it should be left during the production of the battery case."

"Another weld, at the bottom of the battery, is also quite regular."

Electron microscope technicians analyzed to everyone.

"You said, is it possible that the side is where the seal is?"

Someone spoke.

"Hey, it seems that there is such a possibility."

After being reminded, everyone carefully checked the welds of the battery.

I can see that the welds on the side are a bit rolled out compared to the bottom ones, and the welds are rougher.As for the bottom, it looks more regular.

Generally speaking, the temperature of the outer rolled weld will be lower.

From this point of view, the weld on the side should be post-welded.

Because at this time, the core of the battery has already entered the shell, it is necessary to consider the protection of the battery core when welding at this time.

For the bottom of the battery, there is no need to consider this problem, so the welding temperature will be increased to ensure the best welding effect.

"However, if you weld like this, even if the temperature is lower, the temperature during welding will still be above 500°C. After welding like this, can the core inside still be used?"

Someone asked this question.

It's just that no one answered.

The sealing of the battery case is all sealed with a sealant, but the carbon-based battery pioneered the use of welding.

Everyone knows that the welding method is effective, but it cannot solve the problem of damage to the battery core.

There's something about this carbon-based battery.

As for why it is necessary to use welding, this is quite helpless.

Because in the process of research and development of carbon-based batteries, Jiang Ming and others found that the traditional sealant method cannot effectively solve the problem of battery leakage.

Because the energy density of carbon-based batteries is relatively high, the internal pressure of the corresponding battery will be relatively large when charging and discharging.

Although there is a breather valve to balance the internal and external pressure, the transmission of this pressure also takes time.No matter how short the time is, this kind of impact exists.

If the time is short, it may not be a big problem, but if it is used for a long time, the traditional sealing method will have a certain probability of failure.

Although the probability of failure is relatively low, when the number of batteries produced increases, the number of leaking batteries is bound to increase.

The leakage problem is a safety problem, which may cause safety accidents including smoke and fire.Therefore, in order to solve the problem of battery sealing, the carbon-based battery team specially developed low-temperature welding technology.

This low-temperature welding technology was developed under the leadership of Jiang Ming.Otherwise, it cannot be successfully developed with the existing technology.

This welding technology is not only an improvement of the equipment, but also includes the corresponding soldering agent, as well as measures to protect the battery core inside the battery case.

It can be said that this technology alone is groundbreaking and worthy of in-depth research.

Of course, Boston Corporation knew nothing about this.

They were just curious about how Xia Guo's engineers solved the problem of not damaging the battery core during welding.

Now that we know that the seal of the battery is welded on the side, the next step is to disassemble it destructively.

Boston technicians use a cutting machine to carefully cut the finished battery cells.

Generally speaking, the core and casing of the battery are in close contact. Excessive cutting can easily damage the core of the battery.

Although there is no risk of fire, the value of the damaged core will also be greatly reduced.

With the work of the cutting machine, the sealing port of the battery is carefully cut open.With the opening of the seal, the white core is exposed.

When everyone saw this, their spirits lifted.

"Why is there no electrolyte?"

Compared with everyone's excitement, Lao Bai asked a little puzzled.

After asking this question, everyone came to their senses, yes, why only see the battery core but not the electrolyte, this is a bit of a problem.

Generally speaking, when the battery seal is opened, the electrolyte should flow out first.At the same time, there should be pungent temperatures.

But the carbon-based battery is different. Not only does it not see the electrolyte, but it also has no smell at all. It doesn't look like a battery at all.

If it wasn't for the fact that the battery was drained personally, the little brother who disassembled the battery would have doubted the authenticity of the battery.

Next, the battery casing was disassembled, and the battery core was completely exposed.

"You said, could this be electrolyte?"

A technician pointed to a thin layer of jelly-like substance wrapped on the surface of the battery and said to everyone.

I saw this thin layer of jelly, like jelly, tightly fixed on the pole pieces of the battery, and there were some on the outermost periphery of the battery core.

These jelly-like substances are translucent and very thin. If you don't pay attention, you can't really find them.

"It should be. Is this a solid electrolyte?"

A technician suddenly said as if remembering something.

Yes, it should be like this, otherwise it is impossible to explain why there is no traditional electrolyte for carbon-based batteries.

But here comes the question, are Xia Guo's technicians so strong that they have solved the technical difficulties of solid electrolytes and reached the level of mass production?

This is a bit unbelievable.

It should be known that in the lithium battery industry, although the concept of solid electrolyte has been proposed long ago, until now, no manufacturer has been able to mass-produce solid electrolyte.

Solid electrolytes have been repeatedly mentioned as the latest solution to battery fires.It's just that although there are more mentions, mass products have never been seen.

I heard that Shuxia Company has made similar samples for verification before, but this is just a gossip, and Shuxia Company has never admitted it.

Boston is also doing similar research, but due to the difficulty of research, there has been no progress.Boston was ready to give up.

Now seeing the real thing, it proves that Xia Guo's company has solved the technical difficulties, and the solid electrolyte has been mass-produced.How could Buston not be startled when he got this news.

For a while, everyone in the laboratory was silent.

"continue!"

With a gloomy face, Laobai gave instructions to everyone.

Next, the dismantling personnel will skillfully take out the battery core from the casing, then collect samples of the electrolyte, and collect corresponding samples from the surface of the battery.

These samples will then be sent for testing to determine the composition of the samples.

Remove the fixing tape of the battery cell and unfold it on the test bench.

Presented in front of everyone is a battery pole piece close to 3 meters.

The top layer is the positive electrode, the middle is the separator, and the bottom layer is the negative electrode.

On the contact surface of the diaphragm and the pole piece is a thin colloidal electrolyte.

The next step is to take pictures, cut the battery pole pieces, and collect the information of the battery pole pieces.At the same time, special sampling tools are used to collect samples of the slurry and prepare them for testing.

Every corner of the positive electrode, negative electrode, and diaphragm has been carefully checked to provide basic information for subsequent review.

(End of this chapter)