"The test lasted more than half an hour and consumed 8 kilowatt-hours of electricity.

Looking at the power consumption curve, it is the most power-saving at low speed, and the most stable at subsonic speed.

After breaking through the speed of sound, power consumption began to rise rapidly.

In this way, 30 percent is low-speed, 30 percent subsonic, and the remaining 40 percent is supersonic speed.

To achieve a comprehensive range of 1,000 kilometers, the total battery capacity of the drone needs 20 to 22 kilowatt-hours of electricity.

Considering that I personally prefer drag racing, going out at supersonic speed, the liftoff is Mach 4 and Mach 5, and the electricity should be more than 30 kWh for the sake of insurance......"

Before manufacturing the ultra-high-energy battery, Chen Yi printed out the power consumption curve of the drone test.

After some calculations, the value of the battery parameters required by a drone is obtained.

Ion propulsion.

Essentially, it is a propulsion method that consumes electrical energy to generate an electric field and accelerate ions.

In this way, the energy source of the ion-propelled drone is naturally a charging model with a battery.

The pattern is a little bigger.

This is a new energy drone in response to the national policy of converting oil to electricity.

"The energy density of the latest ternary lithium battery has reached 300Wh/KG."

"But to achieve a capacity of 30 kilowatt-hours of electricity, this requires 100 kilograms of batteries, which is seriously overweight."

Today's drones also need to be sprayed with a layer of thermal barrier protection coating to avoid the high temperature of the thermal barrier, which destroys the structure of the carbon fiber.

Although carbon fiber is resistant to high temperatures, it can withstand temperatures of up to 1700 degrees Celsius.

However, the resin with carbon fiber can only withstand temperatures of a few hundred degrees Celsius.

A certain coating must be applied to protect it from damage by supersonic thermal barriers.

The weight of this part, Chen Yi calculated, it takes about 2 kilograms.

Also, taking into account the liftoff limit.

The drone also needs to bring some ion propellant, which requires a budget of about 10 kg.

The fuselage occupies another 13.9 kg of weight.

With a total weight of 40 kilograms, the budget left for the battery is only 14 kilograms.

IN THIS WAY, THE ENERGY DENSITY OF THE BATTERY MUST REACH 2150Wh/KG.

"Let's do it, just add some technical reserves to Yifei, and science and technology will change the world."

Chen Yi shouted, kicked down the Yadi ternary lithium electric vehicle next to him, and disassembled all the chassis and frame accessories.

The laser scanned the original structural images, Chen Yi put on a virtual helmet, opened the CAD software, and began to optimize the structures with hundreds of millions of points.

One law is universal, and all things are harmonious.

Reading information and virtual learning, Chen Yi is now proficient in supersonic vehicles, and is proficient in the structural design and aerodynamic layout design of space spacecraft.

Now, on the other hand, it is not too simple to design and optimize the structure of an electric vehicle.

In less than half an hour, the structural stability of the electric vehicle was optimized, the structural center of gravity was also optimized, and the final body aerodynamic layout was also optimized......

The two carbon fiber 3D printers next to it began to spray hot powder, like building a house, printing the frame and body shell of an electric car.

Eleven o'clock in the evening.

The components of the electric vehicle are printed.

Chen Yi took it to the paint booth and sprayed the components one by one.

After the paint has dried, assemble it.

An electric car made of carbon fiber, with a low-lying and slender shape, like a sci-fi product, has just been baked.

[Item: A delicate and beautiful carbon fiber electric car]

[Attributes: Energy x6.2, Speed x3.8, Electronic Control x5.2, Stability x27.3, Strength x19.2, Beauty x22.8......]

[Note: This is a delicate, expensive electric car using carbon fiber, although it has a space-grade aerodynamic layout, a space-grade stable design, and a space-grade center of gravity design, but rest assured, it still only has a top speed of 25km/h......]

"Gan!"

"Forget about the new national standard speed limit!"

"As long as your horse can run at a speed of 30 kilometers per hour, no matter how awesome the electric car is, it can't catch up with you."

Chen Yi saw the remarks and comments of the electric car, and was speechless for a moment.

"I didn't think of the speed limit of the new national standard in advance, it's so late, and it's not convenient to find someone to unlock the speed limit."

"Now that the total attribute is more than 80, according to the rule that the maximum attribute cannot exceed the sum of the rest of the attributes, the energy attribute can be adjusted and upgraded to more than 40, which should be enough......"

Chen Yi originally wanted to find someone to come over and decode and cancel the speed limit of electric vehicles.

But look at the time.

It was almost twelve o'clock in the morning, and this put down the phone again.

Calculate the initial total attribute of the electric vehicle and find that the energy attribute can be adjusted to 40.

Chen Yi decided not to find someone to release the control, and started now.

Colorful light blooms.

Wait for the light to dissipate.

Electric vehicles, which were originally like science fiction works, have begun to return to modern style.

[Beautiful: 22.8→12.8]

[Energy: 6.2→16.2]

[If you detect that a property exceeds the initial value, do you want to read the information?] Yes/No! 】

"Read!"

Chen Yi did not hesitate and chose to read.

A large amount of information came to mind, and soon, Chen Yi understood this technical information.

"ALL-SOLID-STATE LITHIUM BATTERY, THE TECHNOLOGY IS AVERAGE, AND THE ENERGY DENSITY IS 860Wh/KG...... Go on! ”

Chen Yi continued, reducing attributes such as stability and strength, and adjusting and upgrading to energy attributes.

As the minutes passed, the light dissipated, and Chen Yi continued to read the information.

"The energy attribute is 26.2, and the negative electrode is replaced by a graphite material and a semi-silicon-carbon material, and the energy density reaches 1890Wh/KG."

"It seems that this anode silicon carbon material should be the main direction of the next generation of lithium batteries."

Continue to adjust and read the information.

The energy attribute is 36.2, and the anode material becomes an all-silicon-carbon material.

The energy density has reached 3689Wh/KG, which has come by a leap forward.

The energy attribute is 41.2, and the ratio of silicon-carbon anode materials has been optimized.

The structure of the battery has been optimized, and the energy density is 5216Wh/KG.

"5216Wh/KG, I feel that it is not the limit of carbon silicon anode materials...... CONTINUING TO OPTIMIZE, IT SHOULD BE ABLE TO REACH AN ENERGY DENSITY OF 6000Wh/KG. ”

"But if you really want to get here, it should probably be the energy limit of lithium chemical batteries."

Chen Yi read all the information and analyzed it in his heart.

The 5216Wh/KG all-solid-state lithium carbon silicon lithium battery still has some room for optimization.

However, no matter how much optimization is made, Chen Yi guesses that it is almost the density limit of lithium batteries.

Although it is rumored that there is still a 12,000 Wh/KG lithium-air battery.

However, Chen Yi, who has a certain understanding of this aspect, understands that 12,000 Wh/KG is a lie of word art calculated from the mole molecule alone after removing all other battery components.

The real lithium air is difficult to break through even 1000Wh/KG, and the technical difficulty is very high, and precious metals such as gold are also needed.

According to the full set of battery technology read, Chen Yi adjusted the technology with 26.2 attributes and energy density of 1890Wh/KG.

Reducing the energy density and further improving safety.

Finally, a 1400Wh/KG, a semi-silicon carbon lithium battery that is safer than lithium iron phosphate is freshly released.

Send this carbon-silicon cell technology and preparation process to He Yu.

Before Chen Yi opened the studio, he manufactured ducted model airplanes and equipped battery production equipment.

The sky was bright.

Chen Yi used up the seven fire extinguishers in the studio.

A set of carbon fiber wrapped, weighing 14 kilograms, with a single modular design, connected in series, was finally successfully manufactured by him.

[Item: ultra-high energy lithium carbon silicon battery]

[Attributes: Energy x40.8, Security x1.2 (10), Strength x19.2]

The three core attributes of unpretentiousness.

Among them, the safety attributes of theory 10 and practical 1.2 represent Chen Yi's rigorous manufacturing process.

"This battery is so difficult, it's completely different from the previous battery."

Chen Yi stiffened his mouth twice, subtracting 5 points each from energy and intensity, and raising the safety to 11.2.

Safety surpasses the theoretical value of the design, ensuring that there will be no drone accidents where the battery catches fire in mid-air.

"THE OVERALL ENERGY DENSITY OF 3480WH/KG REACHES 48 DEGREES WHEN FULLY CHARGED.

In addition, the battery is a single modular design, improve the series mode, which can adjust the control program, increase the auxiliary fuel tank abandonment, oh no, it is a non-power battery discarding program.

Whichever battery runs out of power, the drone throws away which battery, further reducing the weight of the fuselage.

With such a multi-pronged approach, even if you like drag racing, reaching half the endurance of a modern fighter jet, 1500 kilometers is completely fine......"

Chen Yi installed the battery on the drone.

Improve the series mode and control program, and spray the drone with a layer of thermal barrier protective coating.

At nine o'clock in the time, the morning sun is just right, which is suitable for drone test flight!