The key link of naval construction, listening to Zhang Dingjunwen's words, Zhang Lan groaned as if a lightning bolt had been small in his heart, nodded, and already roughly understood what was going on in his heart.

Almost any country in the world knows it. China's army is invincible in the world, and in the battle against the enemy, the Chinese army has always been known for defeating the strong with the weak.

Even the US military, the world's number one police chief, admits this, but because China has seriously favored the army in the construction of the three armed forces, the strength of the navy and air force has always been the weakness of our army, and even the US military has said, "We recognize that China's army is the first in the world, but the air and sea are our world." ”

This is also a glimpse of what level the strength of the Chinese navy and air force is at in the world, and this pride of the Chinese army at the beginning has become a pain in the heart of the military, and now the most urgent desire of the military is to solve the problem of the "short legs" of the air force and navy in the army of the republic.

Speaking of which, I forgot to explain what Zhang Dingjun showed Zhang Lan and Alice what it was, in fact, the content in it was simple and simple, that is, I hope that Alice Group will participate in an experimental project in the navy: replace the existing submarine's Mingacid battery with a lithium-ion battery. That is, under the existing conditions, the submarine should be increased as much as possible in terms of underwater range, instead of floating to the surface to charge the battery in the state of a snorkel every time it sails underwater for a period of time as before.

Why did the military suddenly think that the Alice Group would be involved in this project? The reason is that Alice Group has thrown off the world's advanced level in the research of lithium-ion batteries, and is the world's most powerful ionic polymer battery manufacturer and developer, in the current lithium-ion battery is only 3 Liu Dan fine 7 four mAh, the maximum capacity of the lithium-ion battery produced by Alice Group has reached an astonishing 3 Liu old 10,000 mAh, although now the capacity of the lithium-ion battery promoted by Alice Group in the market is only 3 Liu flail specifications, but this specificationIt's just that it takes into account the needs of the existing market, and there is no need to push up the capacity.

Let's take a simple example to illustrate the advantages of lithium-ion batteries compared with traditional lead-acid batteries, the specifications of an ordinary truck with Ming's acid battery are the weight of the group is naturally not said, at least sixty or seventy kilograms of weight, under normal circumstances, the truck uses two batteries in series to form the specifications of the aunt mouth, in this way, the weight of the two batteries alone exceeds the old 0 kg.

But if you want to use lithium-ion batteries to achieve the same specifications, taking the current lithium-ion battery of Alice Group as an example, the specification of a lithium-ion battery on an ordinary mobile phone is 3 Liu old 10,000 mAh. That is, 3 Liu Xinkou, only seven batteries need to be connected in series, you can achieve the effect that Wangang Xinkou "can only be achieved by two large lead-acid batteries, and in terms of volume, it is roughly larger than a box of cigarettes. In terms of weight, it will definitely not exceed three or four taels. Not to mention that compared with the traditional chinic acid battery, which needs to add electrolyte, in addition to small size and light weight. Among them, lithium-ion batteries also have the advantage of no hydrogen decomposition.

Of course, things can't be compared so simply, after all, military products have much higher quality requirements than civilian products, but isn't it enough to just light in volume and weight and without hydrogen decomposition? Under normal circumstances, ordinary conventionally powered submarines can only cruise in the water at a turtle speed when using batteries to dive in the water, even at this speed, and they are still driving in the direction of the ocean current, generally only about 4 nautical miles.

And the Toulisi Group has always had a very good relationship with the military, so why don't you look for them?

What are the benefits of replacing the current Ming acid battery on the submarine with a lithium-ion battery? This is naturally a lot of benefits, at least the first point, is that the weight of the battery is much lighter.

And anyone who knows a little about submarines knows that a standard diesel-powered submarine when it is underwater. The battery pack is the only energy source that provides electricity. The submarine battery pack consists of many specially made military lead-acid batteries (generally Wang!). must be a battery or even more), which has the ability to store a large amount of electrical energy. Under normal circumstances, diesel-electric submarines have a battery pack, and the batteries in the battery pack are connected in series, and the battery pack is connected in series or parallel.

The weight of these batteries is staggeringly heavy; For example, a conventionally powered submarine with an underwater displacement of about a concave stew, under normal circumstances, a submarine probably uses a battery weighing about one ton to provide electricity for the underwater navigation of the submarine when it goes to sea.

The traditional lead-acid battery for submarines, although it is not read, is the most salary, the book is just just Kouyang, Sun Zhaobi's novels, and the open Qinacid battery for civil use in the Mustard River. The use of a closed acid battery is only heated. The so-called closed type is not fully enclosed, but one-way enclosed, that is, the battery can be exhausted to the outside, but the outside air cannot enter the battery.

But these traditional lead-acid batteries are not without shortcomings, although the reliability and ease of maintenance and storage capacity of these military faulty acid batteries are much higher than those of civilian acid batteries, but they are not without shortcomings, large size, heavy weight, and the most important thing is that the service life is still short. In order to ensure the safety of the submarine and the battery, the submarine battery must be overhauled in accordance with the regulations, and the battery that reaches the service life of four weeks will be disassembled and disassembled ashore for maintenance.

If the shortcomings of these batteries can be tolerated by their large size, heavy weight and short service life, the most intolerable thing is that the battery pack on the submarine will be released in the process of charging and discharging because of the electrolysis in the charging and discharging process, and the electrolyte in the battery will be separated, so in this process, hydrogen and other harmful gases will be released. These gases can also occur in a semi-discharged state (when the battery pack is idle).

Every time a battery pack releases an electric gong, it produces cubic centimeters of hydrogen. During the ventilation process, the hydrogen diffuses from the battery pack room to the rest of the cabin. If the hydrogen content in the air exceeds the nephew, the mixed gas is in a flammable state; If the hydrogen content in the air exceeds bluffing, the gas mixture is in an explosive state. ,

This is actually not a big deal, but the problem is that the damn submarine is out of a fully enclosed state when it is sailing underwater, and the hydrogen in the cabin cannot be discharged.

Because the submarine has a large number of batteries that will release hydrogen, and hydrogen gas that reaches a certain concentration will explode when it encounters Mars, resulting in the destruction of the boat and the death of people, so measuring and eliminating hydrogen is also a problem that submariners must pay attention to.

Submarines are very concerned about the ventilation in the cabin when docking at the dock or sailing on the water, in order to exhaust the hydrogen gas from the boat; Since there is no ventilation when sailing underwater, it is necessary to find another way: each cabin in the boat has a hydrogen depressor, which is activated when the hydrogen reaches a certain concentration, so as to eliminate the hydrogen in the cabin. For this reason, smoking is generally prohibited in the cabin.

However, if hydrogen is not produced at all, not to mention the hassle of saving, how much will the weight of the cooling system of the hydrogen evaporator and battery be saved? What does this mean for the submarines that are not large in space, and every bit of space has to be calculated and used, it is estimated that no one has more say than submariners.

And now after the use of lithium-ion batteries with light volume and weight. The place where the wrong acid battery was originally installed in the ship will be vacated a lot of space, and more lithium-ion battery packs can be installed, so that the submarine can sail underwater for a longer time! Even when going to sea to carry out tasks, it can be completely like a nuclear submarine, from sailing to returning to complete underwater, and the potential underwater cannot come out.

Then the problem arises again. How can the military's nose be so well-informed? This, Alice Group launched its own fuel cell version of the Lotus a while ago... and the rechargeable lithium-ion battery version of the taxi, which is known all over the world, and the military will naturally not miss the news, and the guy who doesn't know that it is the military suddenly remembered: If the lead-acid battery on the submarine is replaced with a lithium-ion battery, wouldn't the effect be much better?

That's why there was the beginning of the scene, and it's no wonder that the military couldn't wait to pull Alice Group into their project after inspecting the rechargeable lithium-ion battery version of the Al Res Group's Xiyao Taxi.

"If this project goes well, we will also consider developing submarines, just when Zhang Lan began to ponder the twists and turns, Zhang Dingjun threw out a message again.

Mail submarine? What does this guy mean? Concubine Zhang was stunned for a moment, and then suddenly realized in her heart: this guy is aiming at the fuel cell technology in his hand.

At present, there are three mainstream technologies for submarines that are being developed in the world, namely, closed-cycle diesel engines, Stirling engines, and fuel cells. Although for the time being, there is no way to have an aircraft carrier, but if there is an "aircraft carrier killer" capable of traveling underwater for a long time: mail submarines. It's also a very good choice!