Is that your own algorithm bad? Hearing Zhang Lan say this, Xiao Chen pursed his lips, "In fact, if you want to solve the problem of energy density of ion batteries, the solution is very simple, as long as you solve a few small details." Your research now believes that the capacity of the ion battery under such a large volume can not exceed 4000 mAh, and the battery will become very dangerous because of the large energy density, and it is easy to explode, in fact, it is far from the case, under the premise of maintaining the stable performance of the battery, the energy density of the ion battery still has a lot of room for improvement, and the milliampere-hour is not the limit. ”

"Ah......" Hearing Xiao Chenxi's words, Zhang Lan's mouth opened in surprise, enough to fit in a pound of big red Fuji apples.

"In addition, don't think that this .0000 mAh is the limit of the energy density of this ion battery," it seems that this girl feels that the blow to Zhang Lan is not enough, Xiao Chenxi continued to say triumphantly, "This is just a laboratory sample made under the condition that the accuracy of the research equipment is not enough, if the conditions are met, it will be this volume," Xiao Chenxi gestured, "We can make an ion battery with a capacity of up to 1 milliampere." There is 1 milliampere-hour of energy in this little thing, and you can imagine how dense it is. ”

Saying that, the girl smiled mischievously, "We can also add a small device to this battery, and if necessary, we can detonate the battery, and the power of this battery explosion is no less than a grenade." ”

Zhang Lan was completely speechless by Xiao Chenxi's blow: The level of science and technology on the earth is so different from that of Xiao Chenxi on their planet? 1 mA, compared to the theory of mA, is 25 times higher! Well, though, it seems like a good thing to use such a portable grenade, so maybe it will work sometime.

I've heard that the explosion of a terrestrial ion battery with only a few hundred milliampere-hours can injure people -- I've heard about the explosion of a mobile phone battery is not once or twice -- what kind of scene is the explosion of an ion battery of 1 milliampere-hour? I wonder if there will be a 122mm howitzer explosion with great power?

Seeing Zhang Lan's stunned look, the little girl was obviously very proud, "It's amazing, right?" Only such a small battery can have such a large amount of energy, think about it, if multiple batteries are connected, how much energy can be generated? What happens if there are enough connections? ”

"High-performance all-electric vehicles and high-performance all-electric airplanes!" Hearing the two concepts quickly crossed in his head, Zhang Lan couldn't help but blurt out, "If the number of battery packs used is enough, the performance will definitely not be weaker than the existing vehicles and aircraft!" ”

"That's right, that's it," Xiao Chenxi smiled and snapped his fingers with great speed - this action was still learned from Zhang Lan, "For a very simple example, take our company's Kirin series sedans as an example, under ideal circumstances, Equipped with a 2.4-liter V-six engine, the car can run at a top speed of 255 kilometers per hour without any modifications, but if you use a battery pack composed of ion batteries with an energy density of .00,000 mAh, you only need a tenth of the number of batteries weighing less than one-tenth of the ordinary engine to achieve the same effect, and the mileage of this car is more than 3 times longer when the fuel tank is fully fueled, well, about 1C00 kilometers. If it is loaded with an ion battery of the same weight as the engine, think about it, the cruising range is more than 9,000 kilometers, and this is not counting the weight of the fuel tank when it is fully filled. As for speed, well, if we don't put an electronic speed limiter on the car, the car can go at a top speed of more than 360 km/h. Of course, if you want to run at this speed, you also need to make appropriate modifications to the car, and if you want to achieve this speed, whether it is the existing body frame or the chassis structure of the body, or the braking system, transmission system, control system and tires of the car, it cannot meet such high requirements, even if it is running on a high-standard track. ”

The capacity of the battery has increased by 1, but the mileage is only 9 times, and the less 1C00 kilometers is naturally caused by the increase in body weight to bring a little burden to the car, which is normal. As a professional car business, Zhang Lan naturally understands this very well.

"I'll be a good girl!" Hearing Xiao Chenxi say this, Zhang Lan couldn't help but marvel! In addition to being amazed or amazed, because this guy really can't think of any other way to do it better: this car can be directly better than the F11 car! In terms of speed, it is much faster than Formula 11 cars, GT cars, and other cars that are known for their speed!

If you use an ion battery, under the same weight, this car can run faster and farther, and there is no pollution, there is no need to worry about the safety of the battery, is there anything more exciting than this?

Yes! At least so far, Zhang Lan has not adapted the existing materials - the fuel cell of the future may be an exception.

"What if it's an airplane?" Zhang Lan couldn't help but swallow and asked, "If it's a plane, how fast can you fly?" ”

"It's hard to say, there's no way to make an analogy," Xiao Chenxi shook his head, "The key depends on the size of the aircraft, how many batteries it carries, as well as the design of the aircraft's aerodynamic shape, the design of the wing airfoil and the way it is driven." ”

"Drive method?" Zhang Lan was stunned, in his impression, the use of electric drive of the aircraft, it seems that there is only one way to use propeller drive. The impression of an experimental solar-powered unmanned aircraft seems to be equipped with eight propellers, or is it 1? Zhang Lan was a little unclear, but remembered that the solar plane he saw was full of propellers.

couldn't help but ask Xiao Chenxi, "Could it be that an airplane that uses electricity as a power can have other driving methods besides the propeller driven by the electric motor or the double-row counter-rotating propeller fan we talked about earlier?" Could it be that an airplane powered by electricity can still be propelled by the strong air flow of the engine like a jet engine? ”

"Didn't you think of using gravity or something?" Xiao Chenxi sighed, "Why do you have to choose a paddle fan or propeller to drive?" ”,

"Gravity? I only know that among the existing outer space flight technology on the earth, the unmanned probes flying in the universe can use the gravitational force between the sun, a star and the planet, and the particles sprayed by the sun between the entire solar system as their own driving force," Zhang Lan smiled bitterly, "But the aircraft in the earth's atmosphere, as far as I know so far, it seems that there are only two driving methods at present, either propeller drive, uh, and the propeller fan drive we talked about; Either it's the high-temperature, high-speed wake propelled by jet engines, although in essence they're all the same. But I know that neither propeller-driven nor fan-driven aircraft can make an airplane go faster than the speed of sound, and the only way to make an airplane fly faster than the speed of sound is to use a jet engine, whether it's a turbojet engine with afterburner or a turbofan engine with afterburner.

Apart from these two aero engines, there seems to be no other way so far. Sister, do you have a way to make an airplane that uses electricity as a power source fly faster than the speed of sound without being driven by propellers or paddle fans? ”

"This problem is actually not a problem," Xiao Chenxi sighed, "Whether it is a turbojet engine or a turbofan engine, the essence of it is actually to spray a high-temperature and high-speed air flow to give the aircraft a strong thrust reverse." Limited to the current aircraft aero engine thrust-to-weight ratio is not enough, there is no way for the aircraft to carry out supersonic cruise flight, if you want to carry out supersonic flight, you must turn on afterburner. At this time, the thrust-to-weight ratio of the aircraft exceeded .0, and the high one could even reach nearly 15, so it was natural to achieve supersonic flight. However, you should know that such a supersonic flight comes at the cost of a sharp consumption of fuel, and then a higher temperature and faster air flow is spewed, which is enough to use fuel for 2 hours without afterburner, and can only make the plane fly 5-1C with the afterburner turned on, I think you know this, right? ”

Zhang Lan nodded, he really knew this, although the current fighters are generally capable of supersonic flight, but there is no way to achieve supersonic cruise flight. Normally, unless there is a special situation, such as the need for high speed and maneuverability to dodge an incoming missile, few pilots will turn on the afterburner for supersonic flight, unless you want to fall from the sky halfway back to the base with insufficient fuel.

In order to solve the difficult problem that airplanes cannot fly at supersonic cruise speeds, the United States has already begun to develop its own internationally recognized fourth-generation fighter that can carry out supersonic cruise and has super stealth performance, that is, the F-"Raptor" fighter that the United States just officially announced last year -- this thing is currently the most expensive fighter in the world.

But what Zhang Lan knows is that in fact, the F-2 "Raptor" fighter did not meet the original design requirements: although it was able to achieve very good stealth performance, in order to achieve the stealth performance of the original design, it was at the cost of giving up the bomb load and adopted the design of the internal magazine, but in the end it did not achieve supersonic cruise, or in other words, it was only able to achieve intermittent supersonic cruise.

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