MTL - Warship of Great Power-Chapter 725 Lithium battery submarine: a big step forward

  Chapter 725 Lithium battery submarine: a big step forward

Chain reaction was originally used to describe nuclear bombs. As long as one neutron hits the nucleus, more neutrons will be released, and these neutrons will bombard other nuclei and continue to expand. Just like this, one spreads to ten, ten spreads to hundreds , within a short period of time, all the nuclei will be bombarded, and a large amount of energy will be generated in the fission, which is the chain reaction.

  In lithium-ion battery packs, this situation is also very common.

The first is the wooden barrel effect. Among a large number of lithium batteries, there are always some bad ones. This happens when they leave the factory. This is called an inconsistency. The wear of the production line and the uniformity of the electrode layer , The total amount and permeability of the electrolyte, the degree and location of impurities mixed in, etc. will lead to inconsistencies in the battery.

  In this era, it is not bad to make this difference 3%. When choosing, carefully select and control it to 0.3%, which is already very good.

The safety of the entire battery pack is not determined by the average number, but by the worst one among them. Even if the difference is well controlled when selecting the battery, in the process of use, if the battery pack is produced The factory's control level is not enough, and the battery gap will gradually widen during use. This is called secondary inconsistency.

In short, there must be the worst one inside. When other batteries can hold up, this worst one will not be able to hold up, and the side reaction of the battery is usually heat release. This battery that caught fire, originally It is more prone to heat stroke than others, and usually with the help of the cooling system, it can still hold it, but this time, it finally couldn't hold it!

  A battery burned, driving its entire module to burn. At this time, abnormalities were also found in the conning tower of the early tide submarine.

   "The battery compartment is on fire!" When they saw the fire alarm light, everyone was dumbfounded, even Xiao Juan's second son was completely dumbfounded.

   Among all the failures of the submarine, the fire in the battery compartment is the first, and it often heralds a tragic fate!

Even if it doesn't explode, a fire will quickly consume the oxygen inside the submarine, and eventually all the crew will be suffocated to death, not to mention that after a fire, an explosion will follow, and the submarine can directly become two knots. , and sink.

   Terrible, terrible!

   So, what to do after a fire?

   "Captain, we need to inject seawater immediately and empty the ballast tank at the same time!"

  After 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 previous era of battleships, once the ammunition compartment was in danger of catching fire, it would be directly filled with sea water. As for the submarine, you have to empty the ballast tank quickly, otherwise you won't be able to get up if it sinks.

   "No, of course you can't use seawater. Do you want to die without a whole body? Send someone in with a fire extinguisher immediately!" Xiao Juan's second son shouted: "Empty the ballast water tank!"

   Although Xiaojuan's second son is the captain, 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 soon, and there is no possibility of rescue at all, but there are exceptions. Four sets of power modules, others are still intact.

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

  However, the second son of Xiaojuan is still using the previous experience of lead-acid batteries.

  Many submarines that exploded and sank during the war were caused by battery compartment explosions.

Lead-acid batteries would not explode originally, but after being attacked, the hull of the boat ruptured, and water entered the battery compartment. Then, the battery would be short-circuited, and under complex effects, the incoming seawater would be electrolyzed to produce hydrogen and oxygen. Let's have a big bang. (There is no catalyst, no platinum as the electrode, how it is electrolyzed, the hero of East China does not know, anyway, it is written like this in many materials.)

  Because of this concern, the second son of Xiao Juan did not dare to directly fill the battery compartment with water, so he could only order his subordinates to carry fire extinguishers to rescue.

If you have disassembled the battery compartment of a submarine, you will know that this is simply impossible. The battery compartment of the submarine only has a small opening that can only be accessed by one person. If the battery on fire is on the edge, it may be extinguished, but , the fire must be in the worst condition, that is, the central one.

  If the water is injected in time, maybe the submarine can be saved, but now, they are only one step too late, and there is no such opportunity!

   Before the engineer arrived with a fire extinguisher, he saw a flame rushing 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 are arranged. The central cabin is the largest and is divided into three floors. The upper layer is equipped with the command room, navigation and war room, officer's living quarters and dining room; the middle level is equipped with soldiers' living quarters and dining room; the lower level is mainly the battery room, so the layout is the most reasonable, after all, the battery is the heaviest, and it is most suitable as a ballast.

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

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

  Crackling... a terrible sound sounded.

The industrial foundation of the island country is still quite strong. The pressure-resistant hulls used in 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. High-temperature grilling, the characteristics have changed!

  Boom!

  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 a savior.

  The creaking sound continued, and just before the seawater continued to pour in, there was a crackling sound. Under the huge water pressure, the Zaoshio directly broke into two parts, the head and the tail, and rolled down!

   "Close the hatch and wait for rescue!" Xiao Juan's second son shouted loudly.

  Generally, the conning tower of a submarine will be arranged forward, and Chunchao is no exception. Therefore, at this time, the second son of Xiaojuan and others are in the front section. As long as the hatch of the broken part is closed, this side can still remain airtight.

  However, there is no source of oxygen, and they can only rely on chemical reactions to produce emergency oxygen. They can't last long, and they look forward to the arrival of rescue.

Fortunately, they are doing exercises now, so their bow torpedo compartments are not equipped with actual combat torpedoes, they are all for exercises, and there is no warhead. Otherwise, if the bow of the boat hits the bottom and falls, the torpedo will If the cabin explodes, they really have no chance of surviving.

  Everyone is quietly waiting, waiting.

   "What? The submarine caught fire and exploded? How is this possible?" Hopper was taken aback when she saw the new email. Her first reaction was: Today is not April Fool's Day!

  Although many torpedoes were fired at the target, they were all torpedoes used for teaching exercises. There was no warhead at all. The warhead was filled with electronic components for testing and training.

  The sub was sunk without an actual attack?

"Attention, the exercise is suspended, and now we will do our best to rescue the wrecked Zaoshio submarine! Attention, this is not an exercise!" The person in charge of the entire exercise, Archie Clemins, looked at the latest information, and his face was also very ugly. In the event of an accident, there will even be death indicators in each exercise. These are understandable. However, during the exercise, a submarine accidentally sank, and the loss is a bit big.

   How did this happen? The well-endowed submarine offensive and defensive drill has now abruptly turned into a rescue drill! He was very annoyed, but there was no other way, they had to do their best to rescue.

   At this time, Qiongzhou, Qin Tao heard about this incident, and he was also very curious: "What are these people doing? Are they working too hard? They actually launched real torpedoes 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 the one who kept 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 did appear. After all, the transformation of diesel-electric submarines is the smallest, and the performance is improved the most. However, there is a premise: the technology of electric vehicles has developed rapidly, and the management of lithium batteries already has a special chip. , high reliability. What now? Mingzhou Group has just started to develop electric vehicles, and these technologies are still being explored. It is not easy to install thousands of 18650 batteries for electric vehicles, let alone hundreds of thousands of batteries for nuclear submarines!

The steps of the islanders are a bit big, but there is no way. After all, the East already has a Stirling engine, and diesel-electric submarines can sail underwater for a long time. Of course, the islanders are not far behind. They have advanced The Panasonic battery, of course, is going to fly directly, but unfortunately it didn't fly well and fell down.

  Qin Tao did not go to Shuangsha Island with Mr. Lin, but took the Air Police 2000 to observe. However, all the leaders of the navy at all levels came to Qiongzhou, so it can be regarded as a semi-on-site observation here.

   Now, upon receiving the news, the naval leaders were 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 real submarine has sunk." Wu Shengli said: "Next, we should study it. What should we do?"

   This is not a drill! Thanks to having entered the other party's data link and stolen a lot of information, otherwise, everyone would never have thought of the submarine car model. Although the Air Police 2000 early warning aircraft has observed a lot of situations, it can't see underwater, even if it finds The other party's state is wrong, and they will not know what the other party is doing.

   "We in Mingzhou have submarine rescue capabilities, and we have performed well in the process of rescuing Oscar-class nuclear submarines." Qin Tao said: "If they don't want their crew to die, it is best to ask us for help."

   "Mr. Qin, you don't know that. The US submarine rescue capability is still very strong." A naval leader said: "They are different from the old Maozi, they are capable."

  Lao Maozi is because the huge empire collapsed suddenly, all kinds of things were messed up, and the submarine rescue capability was castrated, but the US Navy is not. 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 start the submarine emergency rescue."

Under such circumstances, Qin Tao really wanted to extend a hand of friendship. On the one hand, he wanted to make money, and on the other hand, he also wanted to show his strength. If Dongfang came to rescue, his face would definitely be slapped. You know, their exercise simulated how to deal with Dongfang's submarines, and Dongfang's rescue was needed in the end?

  Americans also have a mature rescue system, and now they just have to wait.

   A few minutes later, new news came.

   "They have already used the C-5 Galaxy transport plane to transport their DSRV-2 rescue submarine."

  This is the awesomeness of deploying the army globally. Once there is any need, it will arrive all over the world soon.

   Before the more advanced SRDRS 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 exceeds 2 meters, and the weight is 40 tons. Therefore, this device has been transported by the C-5 Galaxy transport plane since it entered service in 1971.

  During transportation, this kind of rescue submarine was directly tied to an 18-wheel truck, drove into the engine room, and came out backwards when it got off.

   "This kind of global deployment capability is only possessed by the U.S. military." The people present felt emotional.

  East does not need global deployment, mainly for homeland defense. It is enough to rely on various railways in the country. Therefore, there are no advanced strategic transport aircraft. At present, there are only a few Il-76s as the main force, and the Yun-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 the An-225, and it can reach the world when needed." Qin Tao said: "However, it's a pity that there is only one. Of course, if we need more, we still need to develop it. It depends on the decision of the superior."

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

   It’s just that R&D costs a huge amount of money, so it’s not a matter of saying a word. Now, even if the big guys are jealous, they can only watch and wait until the national strength continues to grow.

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

"It should be to use the active mode of sonar to determine the position of the submarine, so as to facilitate the subsequent rescue. By the way, what is the depth of the sea area where the accident happened?" Qin Tao suddenly thought of something. If it is too deep, there is no need for rescue. The shell shattered immediately.

   "The average depth is 400 meters, and the deepest part is 500 meters."

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

Restricted by various treaties, the advanced weapons of the island countries can only be used by themselves and cannot be exported. However, thanks to the help of the American father, their defense industry is still developing very fast. The fighter planes of the Air Force directly introduce the technology of F-16 , after being enlarged, 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. Two customers, in the 1990s, had King Kong-class warships with this system. In terms of submarines, it is actually developed from the previous diesel-electric submarine technology of the United States. What the United States has, they can have.

Of course, the United States gave up diesel-electric submarines later, but the islanders couldn't. After all, they couldn't have nuclear submarines, they could only achieve it by improving diesel-electric submarines. They developed a strong submarine industry and had advanced high-strength steel. , For a long time, it has been ahead of the East by a large margin.

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

  If they spread the news, many people will be shocked that the diesel-electric submarine that they originally designed can only dive to a depth of more than 300 meters, after being blown up into two pieces, fell to a depth of 500 meters and is still safe.

  However, if it gets out, people will definitely be suspicious. Why did it blow up in two? Being attacked? The Americans will definitely not do it, they will not take the blame, other problems? That's what's wrong with their submarine.

   Even if you can dive to a depth of 1,000 meters, it is useless. Who wants a submarine with questionable safety?

   "Wait for the investigation report from the Americans to see what happened to the submarine." At this time, Qin Tao was very interested in this.

   "Before the arrival of the DSRV, the Americans were already using the 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 fully equipped!"

   This thing only listens to the English code name, and I don’t know what it is. In fact, it is a submarine rescue module, similar to a diving bell. It is a product designed during World War II. The US Navy is not too old, and it is still in use now.

It does not have a powerful power system, and it almost relies entirely on the crane above, and has high requirements for sea conditions, which is incomparable with the later professional deep-diving lifeboats. However, its structure is simple. Now that something has happened, of course we must use this Things down to find out.

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

  This time, our own electronic warfare unit is so powerful, it's almost like watching a live broadcast.

  An integrated supply ship temporarily acted as a rescue ship. Its crane lifted the submarine rescue module and slowly dived into the water.

  There were knocking sounds continuously under the water. It should be that the people inside the submarine were using this method to send signals to the outside world. Therefore, they quickly made a positioning based on these, and now they are going to go down and test.

   "These stupid islanders can't even do the drill well." Oliver, who was in charge of the rescue, sat in the submarine rescue cabin, a little annoyed.

Although the United States has a large number of submarines and advanced rescue equipment, in fact, there are not many accidents with them, so they seldom have salvage work. submarine.

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

  With this thought in mind, Oliver watched everything on the sea disappear, and he had already 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, and have to go through a series of other steps to enter the deep sea, but the diving bell is different , it can maintain the same atmospheric pressure as the outside world, essentially the same as a submarine, except that all supplies depend on the mother ship above.

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

All kinds of fish swim around him, and as the depth descends, the shapes of those fish become more and more unique. He observes these fish even more than he pays attention to the submarine. .

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

  "The target has been found, but it docked in a very special position, and it cannot be docked visually."

Although it is only an upgraded version of the diving bell, it has also been modified. There is a special docking port under it, which can be docked with the hatch of the submarine, so that the people inside can be rescued, but the The volume is limited, and only 6 people can be rescued 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 is lying flat on the seabed, it can still fall, dock, and rescue a group of people.

   But now, the bow of the submarine has been poked into the mud on the seabed, and the hull and the horizontal plane are at a forty-five-degree angle. In this case, he cannot dock at all.

   "The broken part of the hull seems to have exploded. At the bottom of the battery compartment, wait, what did I see? Their submarines actually use cylindrical batteries?"

Not all the batteries were involved in the combustion, and some of them were still intact. These batteries fell to the bottom of the sea together with the submarine. Due to the damage of the battery pack, the cylindrical batteries were exposed, and some bubbles could be seen constantly forming near these batteries. .

  The battery will not necessarily explode when it enters the seawater. After all, even if there is salt in the seawater, the conductivity is not high enough, but it can allow the battery to discharge slowly. Under the stimulation of these currents, the seawater will become bubbles and float upward.

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

  The victims are pitiful enough, but if more people are killed because of rescuing them, it is not worth it!

   Not to mention, it is not the US Navy that is killed now, but only the navy of the island country.

  Then, the submarine rescue module left before contacting the Early Tide. However, it at least took some photos and brought back first-hand information.

  (end of this chapter)