Chapter 725 Lithium battery submarine: a big step forward

Chain reaction originally described nuclear bombs. As long as one neutron hits the nucleus, more neutrons will be emitted. These neutrons will then bombard other atomic nuclei and continue to expand. In this way, one will be passed to ten, and ten will be passed to hundreds. , in a short period of time, all atomic nuclei will be bombarded, and a large amount of energy will be generated in fission. This is a chain reaction.

 This situation is also very common in lithium-ion battery packs.

The first is the barrel effect. Among a large number of lithium batteries, there are always some that are not in good health. This happens when they leave the factory. This is called primary inconsistency. The wear and tear of the production line and the uniformity of the electrode layer during the production process , the total amount and penetration of electrolyte, the degree and location of impurities mixed in, etc. will all lead to battery inconsistencies.

 In this era, it is good to achieve this difference to 3%. When choosing, if you select carefully and control it to 0.3%, it is already very good.

The safety of the entire battery pack is not determined by the average, but by the worst one. Even if the differences are well controlled when selecting batteries, during use, if the battery pack is produced If the factory's control level is not enough, the gap between batteries will gradually widen during use. This is called secondary inconsistency.

In short, there must be the worst one among them. While other batteries can still hold up, this worst one cannot. And the side reaction of the battery is usually heat release. The battery that caught fire was originally I am more prone to heatstroke than others. I usually can hold on with the help of the cooling system, but this time, I finally couldn’t hold on!

 One battery burned, causing its entire module to burn. At this time, abnormalities were also discovered in the control tower of the Hayashio submarine.

“The battery compartment is on fire!” When they saw the fire alarm light, everyone was stunned, even Komaki Jiko was completely dumbfounded.

 Among all submarine failures, battery compartment fires rank first, often heralding a tragic fate!

Even if there is no explosion, a fire will quickly consume the oxygen inside the submarine, eventually causing all the crew members to be suffocated to death. Not to mention that usually after a fire, there will be an explosion, and the submarine can directly become two sections. , and then sink.

　　Terrible, too terrible!

So, what to do after a fire?

“Captain, we need to inject seawater immediately and drain the ballast tank at the same time!”

 Once a fire breaks out, you have to put it out. On the sea, the easiest way to put out a fire is, of course, to use sea water! In the old battleship era, if there was a risk of fire in the ammunition compartment, it would be filled with seawater directly. As for submarines, you have to empty the ballast water tank quickly, otherwise it will sink and you will not be able to get up.

“No, of course we can’t use sea water. Do you want to die without a body intact? Send someone in immediately with a fire extinguisher!” Komaki’s second son shouted: “Empty the ballast water tank!”

 Although Komaki Second Son is the captain of the boat, he is not familiar with the characteristics of this brand-new lithium battery.

Generally speaking, after an electric car catches fire, it will burn completely quickly, and there is no possibility of rescue at all. However, there are exceptions. After a certain person in Shanghai caught fire, the fire brigade happened to be nearby and immediately sprayed fire to cool down. In the end, it only burned Four sets of power modules, the others are still intact.

It can be seen that if the battery pack catches fire, cooling is the first priority, and water spraying is also necessary. Anyway, under the operation of the perfect battery management module, as long as there is an accident, the power will be cut off immediately.

 However, Komakijiko is still using his previous experience with lead-acid batteries.

 Many submarines that exploded, caught fire and sank during the war were due to the explosion of the battery compartment.

Lead-acid batteries will not explode originally, but after being attacked, the hull of the boat ruptures and water enters the battery compartment. Then, the battery will short-circuit, and then under complex effects, the incoming seawater will be electrolyzed to produce hydrogen and oxygen. Have a big bang. (How it was electrolyzed without a catalyst or platinum as an electrode is unknown to East China Heroes. Anyway, many materials say so.)

Because of this concern, Komakijiko did not dare to directly fill the battery compartment with water. He could only order his men to carry fire extinguishers to rescue.

If you have ever dismantled a submarine's battery compartment, you will know that this is simply impossible. There is only a small opening in the submarine's battery compartment, which can only allow one person to enter or exit. If the burning battery is right on the edge, it is still possible to put it out, but , the one that caught fire must be in the worst condition, that is, the one in the center.

If they had injected water in time, they might have been able to save the submarine, but now, they were just a step too late, and they would not have this chance!

Before the engineer soldier arrived with the fire extinguisher, he saw a stream of flames surging down the cabin!

 General diesel-electric submarines are divided into three parts. The bow is mainly equipped with bow sonar and torpedoes, and the tail is the power cabin, where diesel generators, etc. are arranged. The central cabin is the largest and is divided into three layers. The upper floor houses the command room, navigation and war room, officers' living quarters and dining room; the middle floor houses the soldier's living quarters and dining room; the lower floor is mainly the battery cabin. This layout is the most reasonable. After all, batteries are the heaviest and are most suitable as ballast.

Now, the entire battery compartment is on fire, and the fire is so raging that it can no longer be controlled.

Everyone was dumbfounded, and there was only one thought in his mind: It's over!

Creak...a terrible sound sounded.

The industrial base of the island country is still quite strong. The pressure-resistant shells used by their submarines are made of NS-110 ultra-high-strength steel, with a safe diving depth of 350 meters and a maximum diving depth of 450 meters. Now, the steel has been damaged due to When roasted at high temperatures, the characteristics change!

　　Bang!

Finally, a section of steel cracked, and turbulent seawater poured in, rushing directly to the battery compartment. The flames began to extinguish after encountering seawater, but seawater was definitely not the savior.

The crunching sound continued. Just before the sea water continued to pour in, a clicking sound was heard. Under the huge water pressure, the Morning Tide broke into two parts, the front and the tail, and rolled down!

 “Close the hatch and wait for rescue!” Komakijiko shouted loudly.

 Generally, the control tower of a submarine will be arranged forward, and Haru Super is no exception. Therefore, at this time, Komakijiko and others are in the front. As long as the broken hatch is closed, the air tightness can still be maintained here.

 However, without the source of oxygen, they could only rely on chemical reactions to produce emergency oxygen. They could not last long, and they expected rescue to arrive quickly.

Fortunately among the misfortunes, they are currently conducting exercises, so their bow torpedo cabins are not equipped with actual torpedoes. They are used for exercises and do not have warheads. Otherwise, if the bow of the boat hits the bottom and the torpedo is hit, the torpedoes will be destroyed. If the cabin explodes, they really have no chance of survival.

 Everyone is waiting quietly, waiting.

"What? The submarine caught fire and exploded? How is this possible?" When she saw the new email, Hopper was stunned. Her first reaction was: Today is not April Fools' Day!

Although many torpedoes were fired at the target, they were all used for teaching exercises and did not have warheads at all. The warheads were equipped with electronic components for testing and training.

 The submarine was sunk without a real attack?

"Attention, the exercise is suspended. We are now trying our best to rescue the wrecked submarine Zaoshio! Attention, this is not an exercise!" Archie Clemmings, the person in charge of the entire exercise, looked at the latest information and his face was ugly. What will happen during the exercise? Accidents, and even death indicators in every exercise, are understandable. However, during the exercise, a submarine accidentally sank, and the loss was a bit big.

How did this happen? What was a good submarine attack and defense drill has now turned into a rescue drill! He was very angry, but there was no other way. They had to do their best to rescue.

At this time, in Qiongzhou, Qin Tao heard about this and was very curious: "What are these people doing? Are they trying too hard? They actually launched a real torpedo during the exercise?"

Even if Qin Tao is well-informed, he would never have thought at this time that this matter is actually related to him. At the beginning, he was constantly advocating the direct replacement of lead-acid batteries with lithium batteries as a technology for diesel-electric submarines. Revolutionary.

In later generations, this kind of technology will indeed appear. After all, the modification of diesel-electric submarines will be minimal and the performance will be improved the most. However, this is based on a premise: electric vehicle technology has developed rapidly, and there are already special chips for the management of lithium batteries. , high reliability. What now? Mingzhou Group has just begun to develop electric vehicles, and these technologies are still being explored. It is not easy to install thousands of 18650 batteries in electric vehicles, let alone hundreds of thousands of batteries in nuclear submarines!

The steps taken by the islanders are a bit too big, but there is nothing we can do about it. After all, the East already has Stirling engines, and diesel-electric submarines can sail underwater for a long time. Of course, the islanders are not far behind. They themselves have advanced Of course, the Panasonic battery had to fly directly, but unfortunately it didn't fly well and fell down.

 Qin Tao did not go to Shuangsha Island with Mr. Lin and take the Air Police 2000 to observe. However, the leaders of the navy at all levels came to Qiongzhou, and it was a semi-live observation here.

Now, after receiving this news, the naval leaders are also very puzzled: "This is indeed strange enough. What are they doing?"

"What is certain is that this is indeed not a drill, but a submarine really sank." Wu Shengli said: "Next, we should study it, what should we do?"

 This is not a drill! Thanks to having entered the opponent's data link, a large amount of intelligence was stolen. Otherwise, no one would have thought of the submarine car model. Although the Air Police 2000 early warning aircraft also observed many situations, it could not see underwater. Even if it found If the other party is not in the right state, he will not know what the other party is doing.

“We in Mingzhou have submarine rescue capabilities and have performed well in rescuing Oscar-class nuclear submarines.” Qin Tao said: “If they don’t want all their crew members to die, it’s best for them to come to us for help.”

“Mr. Qin, you didn’t know this. The United States’ submarine rescue capabilities are still very strong.” A naval leader said: “They are different from Lao Maozi. They are capable.”

Lao Maozi is because the huge empire collapsed, everything was in chaos, and the submarine rescue capability was castrated. But that is not the case with the US Navy. They have advanced submarine rescue capabilities, which are second to none in the world.

“Yes, the submarine rescue equipment of the United States and island countries is very advanced, so let’s watch the show. We can pay attention to the movements of the Americans in real time and see how they initiate submarine emergency rescue.”

In this case, Qin Tao really wanted to extend a hand of friendship, on the one hand to make money, and on the other hand to show his own strength, but thinking about it, the other party refused. After all, if something goes wrong, let him If Dongfang comes to the rescue, his face will definitely be slapped. You know, their exercise simulates how to deal with Dongfang's submarine, but it turns out that Dongfang needs rescue?

Americans also have a mature rescue system. Now we just need to wait.

 A few minutes later, new news came.

“They have already used a C-5 Galaxy transport aircraft to transport their DSRV-2 rescue submarine.”

 This is the cool thing about deploying troops globally. Once there is any need, it will soon arrive all over the world.

Before the more advanced SDRRS was successfully developed, the main deep-submersible rescue boat of the U.S. Navy was the DSRV-2 rescue submarine. The length of the DSRV-2 deep-sea rescue submarine is about 16 meters, the maximum diameter of the hull is more than 2 meters, and the weight is 40 tons. Therefore, this device has been transported by C-5 Galaxy transport aircraft since it was put into service in 1971.

During transportation, this kind of rescue submarine is directly tied to an eighteen-wheel truck, driven into the engine room, and then backed out when it comes down. It is considered a roll-on and roll-off transportation, which is very efficient.

“Only the U.S. military has this kind of global deployment capability.” People present sighed with emotion.

The East does not need global deployment. It mainly focuses on homeland defense. Relying on various domestic railways is enough. Therefore, there are no advanced strategic transport aircraft. Currently, there are only a few IL-76s as the main force, and the Y-20 has just been developed.

 As for the level of C-5, there is no such thing.

"Who says we don't have it? We have An-225. When needed, it can reach the whole world." Qin Tao said: "However, it is a pity that there is only one. Of course, if more are needed, we still need to develop them. This It depends on the determination of the superiors.”

 To develop the An-225, or even the An-124 level, the D-18T engine is needed, and it is not a big deal to introduce technology from Motor Sich Company.

 It’s just that research and development requires huge sums of money, which is not something that can be said in words. Now, even if everyone is jealous, they can only watch and wait until the national strength continues to increase.

"Let's wait until later. Now, the Americans are mobilizing rescue submarines, but this will take time. What are they doing during this time?"

"The active mode of sonar should be used to determine the location of the submarine to facilitate subsequent rescue. By the way, what is the depth of the sea area where the accident occurred?" Qin Tao suddenly thought of something. If it is too deep, there is no need for rescue. The submarine is durable. The pressure shell immediately shattered.

“The average depth is four hundred meters, and the depth is five hundred meters.”

"It seems that their submarines can still withstand it." Qin Tao said: "If this gets out, it can be advertised for them, but I don't know if they dare."

Restricted by various treaties, the advanced weapons of the island countries can only be used for their own use and cannot be exported. However, due to the help of the United States, their defense industry has developed rapidly. The Air Force's fighter jets directly imported F-16 technology. , after enlarging it, it became an F-2 fighter, not to mention the directly imported F-15, and even the F-35 of later generations. As for the navy’s warships, they are even more advanced. The U.S. Aegis system, the island country is the world’s No. 1 Two customers, in the 1990s, had King Kong-class battleships with this system. In terms of submarines, they are actually developed from the previous diesel-electric submarine technology of the United States. Whatever the United States has, they can have.

Of course, the United States later gave up on diesel-electric submarines, but the islanders could not. After all, they could not own nuclear submarines, so they could only rely on improved diesel-electric submarines. They developed a strong submarine industry and had advanced high-strength steel. , for a long time, it was a long way ahead of the East.

 Although it has exceeded the design depth, it is still within the bearable range.

If they spread the word that the diesel-electric submarine they originally designed could only dive to a depth of more than 300 meters, but after being blown into two pieces, fell to a depth of 500 meters and was still safe, many people would definitely be shocked.

 However, if this spreads out, people will definitely be suspicious. Why did it explode into two pieces? Being attacked? The Americans definitely won’t do it, and they won’t take the blame. What other issues are there? That means there is something wrong with their submarine.

Even if it can dive to a depth of one thousand meters, it’s useless. Who wants a submarine with questionable safety?

“Let’s wait for the American investigation report to see what happened to the submarine.” Qin Tao was very interested in this at this time.

“Before the DSRV arrived, the Americans were already using SRC for early rescue.” Sure enough, new news came.

"SRC? They actually carried this thing during the exercise?" Qin Tao was very curious: "They are really well-equipped!"

 This thing only hears the English code name, and I don’t know what it is. In fact, it is a submarine rescue cabin, similar to a diving bell. It is a product designed during World War II. The U.S. Navy is not too old and is still using it.

It does not have a powerful power system and relies almost entirely on the crane above. It also has very high requirements for sea conditions. It is incomparable with later professional deep-diving lifeboats. However, its structure is simple. Now that something has happened, of course it must be used first. Went down to see what was going on.

"Okay, let's wait." Qin Tao said, "I think we can go have a meal first, and when we come back, we should have the results, preferably with a photo or something."

This time our electronic warfare troops were so powerful that it was like watching a live broadcast.

 A comprehensive supply ship temporarily acted as a rescue ship. Its crane hoisted the submarine rescue cabin and slowly submerged it into the water.

There were constant knocking sounds under the water. It should be that the people in the submarine were using this method to send signals to the outside world. Therefore, they quickly determined their position based on these. Now, they were going to test it.

“These stupid islanders can’t even do drills well.” Oliver, who was in charge of the rescue, was sitting in the submarine’s rescue cabin, a little annoyed.

Although the United States has a large number of submarines and advanced rescue equipment, in fact, they do not have many accidents, so they rarely do salvage work. Who would have thought that this time they have a job, but they are actually salvaging islanders. submarine.

 Isn’t it just an exercise? Why did you cut yourself in two? Unbelievable!

With this thought, Oliver watched everything on the sea disappear, and he had entered the water.

Ordinary divers can only dive to a depth of tens of meters. Unless they wear a deep-water diving suit made of thick rubber and bronze, they must go through a series of other steps before they can enter the deep sea. However, the diving bell is different. , it can maintain the same atmospheric pressure as the outside world. It is essentially the same as a submarine, except that all supplies must rely on the mother ship above.

There was an observation window made of quartz glass in front of Oliver. As the water gradually turned dark, he turned on the searchlight.

Various fish were swimming around him. As the depth dropped, the shapes of the fish became more and more unique. He observed these fish even more than he paid attention to the submarine. .

However, when the bottom of the sea appeared in front of him, he still saw the submarine dozens of meters away. The moment he saw it, he took a breath of cold air.

“The target has been found, but the location where it docks is very special, and docking is impossible by visual inspection.”

Although it is just an upgraded version of the diving bell, it has also been modified. There is a special docking port underneath it, which can be docked with the hatch of the submarine, so that the people inside can be rescued. However, this kind of thing The size is limited and it can only rescue 6 people at a time, while the DSRV can save 24 people at a time.

The submarine rescue cabin is not only small in size, but also has poor underwater maneuverability. If the submarine lies flat on the seabed, it can still fall down, dock with it, and rescue a group of people.

But now, the bow of the submarine has penetrated the mud on the seabed, and the hull of the submarine is at an angle of 45 degrees to the horizontal plane. In this case, he cannot dock at all.

“There seems to have been an explosion at the broken part of the hull. The battery compartment at the bottom, wait, what did I see? Their submarine actually uses a cylindrical battery?”

Not all batteries participated in the combustion, and some were still intact. These batteries followed the submarine and dropped to the seabed. Due to the damage of the battery pack, the cylindrical batteries were exposed, and some bubbles could be seen forming near these batteries. .

 The battery may not necessarily explode if it enters seawater. After all, even if there is salt in the seawater, the conductivity is not high enough. However, it can slowly discharge the battery. Under the stimulation of these currents, the seawater turns into bubbles and floats upward.

This scene was indescribably weird. Oliver's face became serious: "I think this mission is risky. I request that the mission be terminated immediately. Quick, pull me up. I don't want that thing to explode!"

The people in distress are pitiful enough, but if more people die because of rescuing them, it is not worth it!

Not to mention, it is not the U.S. Navy that is in trouble now, but only the navy of the island nation.

As a result, the submarine rescue cabin left without contacting the Zaoshio. However, it at least took some photos and brought back first-hand information.

 (End of this chapter)