Great Power Heavy Industry: Rise

Chapter 35 The Bottleneck of Power Batteries

4 month 20 day.

morning.

Zhong Cheng sorted out the relevant drawings of Nuwa's industrial mother machine and printed them out.

Then I found Director Luo and explained the situation. He was going to the machine tool factory to implement the industrial master machine of the R&D institute.

Director Luo generously gave him a pass with a one-year validity period. With this pass, he can enter and exit the research and development institute at any time.

And you can call the car of the research and development institute to travel.

The small car of the research and development institute needs a special driver to pick it up, he thinks about it or forget it, it's a bit too ostentatious.

However, he can buy a car by himself!
Now his wallet is bulging again, and he has nearly 8 yuan in money.

And there is no need to send money to the family for the time being, and it is completely possible to spend a lot of money.

Excitedly, he ran from the research and development institute to the streets of Beishan City.

In a car dealership, he picks and chooses carefully.

Finally, a variable speed mountain bike was selected with a price of 1888 yuan.

He gritted his teeth and paid.

Then he rode to the machine tool factory. With his physical fitness, the bicycle speed could easily reach more than 30 km/h.

If it is not considered too shocking, 60 km/h is no problem, and it has already caught up with the speed of a car.

It takes only 10 minutes to get to the machine tool factory seven or eight kilometers away.

too fast!
It is good to have a car, and he also owns a car now.

I went to the assembly workshop to find Manager Li and explained the situation.

Manager Li has received a private notice from Director Qian, expressing his full support for the work of the research and development institute, and the cost of materials can be calculated, but labor costs can be ignored.

This is also very good. In this way, it is no problem to control the manufacturing cost of this Nuwa industrial master machine within 100 million.

Because Nuwa No. [-] has been completed, No. [-] and No. [-] are already in the process of manufacture, so Zhong Chengcheng named this new family member with more powerful functions Nuwa No. [-].

After spending the whole morning communicating with Zhao Wei and the project team members, the design work of Nuwa [-] started.

Because it involves the use of new tools, new measuring systems, and the improvement of precision levels, many drawings of Nuwa [-] need to be redesigned.

But it wasn't too difficult, and the workload was mainly Zhong Cheng and Zhao Wei's business, which would basically not affect the work of the project team. Manager Li happily made a final decision on the project plan.

After get off work in the afternoon, Zhong Cheng didn't work overtime, he rode back to the research and development institute.

He still has his own "private goods" to do.

The office on the third basement floor of "Tianwaitian".

Liu Yuzhu hadn't left work yet, when seeing Zhong Cheng come back, he said enviously:

"Brother, what is your relationship with the director? He issued a pass for you. We just want to go out for a while, and we have to review it for a long time, and we also strictly stipulate the time to go out."

Zhong Cheng chuckled, and replied casually: "It's not that I haven't finished the work at the machine tool factory, and now I have to continue. I'm going out to work, not to go out to play."

"That's fine, I want to go out and get busy, but no one is looking for me."

In fact, the designers of the research and development institute want to borrow it from every production unit of the company, but will the research and development institute agree?

Unless the company has a major R&D project that needs the help of the R&D department, the R&D work is still carried out in the R&D department, and people will not go out casually.

Zhong Cheng was busy with his own affairs in the research and development institute, which is why he was treated like this.

……

Yesterday, because I read it too hastily, I only read the title of the military drone project, but didn't read it carefully.

After setting the military drone as the next research and development goal, Zhong Chengcheng decided to take a good look at it first.

It took him two hours to read through the design plan, and then he learned about the current technical conditions of various countries from the system.

He understood why the military drone project had been abandoned.

unrealistic!

At present, the development of military drones in various countries is roughly in two directions, one is miniaturization, taking the reconnaissance route, and the other is large-scale, taking the attack route.

Miniaturization can only be used for reconnaissance because it cannot carry heavy weapon systems. However, under the coverage of today's global satellite system, the status of unmanned reconnaissance aircraft is very embarrassing, of course, it does not mean that it is completely useless.

But it's definitely not what Zhong Cheng wants.

Large-scale development is the development of unmanned fighter jets, but it is still tasteless to really replace manned fighter jets.

Electric-drive propeller unmanned fighter jets are low in cost, but their speed and load capacity are not up to par with fifth-generation fighter jets.

However, the speed and load capacity of UAVs using jet turbine aeroengines can barely catch up with the fourth and fifth generation fighters.

But it weighs a few tons at every turn, and the manufacturing cost and use cost remain high, just like a simplified version of a manned fighter plane with the cockpit removed, and because of the problems of the automatic driving and automatic fire control system, the performance must catch up with the fifth generation. The warplane is still far away.

What he wants is an unmanned aerial vehicle with high performance and low cost, which can gain an overwhelming advantage in numbers and gain complete air supremacy. It is a wolf pack tactic or swarm tactic.

It doesn't matter whether you have the sixth-generation or seventh-generation aircraft of the US Emperor, if you come to one, I will dispatch ten, if you come to a hundred, I will dispatch a thousand, and the group will fight to death.

A bold design idea was proposed in the military drone research and development project that Zhong Cheng saw.

The idea of ​​using a power battery to provide energy and using a non-propellant engine to drive a drone is too avant-garde to be realized.

Not to mention the problem of the size of the driving power and the weight and volume of the engine without working medium.

Now what kind of power battery can provide such a large power and so much power, and the current power battery itself is too heavy is also a serious problem.

This involves a professional term: the "energy density" of the battery. The energy density of the battery is the electrical energy released by the average unit volume or mass of the battery.

At present, the energy density of mainstream power batteries is between 100-150Wh/kg.

(PS: Wh/kg is watt-hour/kg. Let’s use an image metaphor. A battery with an energy density of 100Wh/kg can only hold 10 kWh of electricity with a weight of 1 kg. It is conceivable how low the level is.)
There is another term "power density (W/kg)" related to the function of the power battery, which refers to the rate at which the battery per unit weight can output energy when it is discharged.

In layman's terms, it is how much power the power battery can provide.

The current power density of lithium-ion batteries can reach thousands of watts per kilogram, while the engine power of a 1.5L small-displacement family car has 100 kilowatts.

With the current level of power battery technology, it is too far behind to meet the weight and power requirements of drones for power batteries.

No wonder the drone project was left on paper and terminated without even an initial demonstration.

Zhong Cheng talked with Liu Yuzhu again. Liu Yuzhu is a graduate student majoring in power batteries. He explained the direction of improving the energy density and power density of power batteries from a professional perspective.

There are only three directions: the adoption of new material systems, the fine adjustment of battery structure, and the improvement of manufacturing capabilities, and there is no other way.

And only by using new materials can it be possible to significantly break through the current bottleneck of lithium-ion batteries.

Zhong Cheng was lost.

He is a person engaged in mechanical automation. Now it is more difficult for him to develop new battery materials than to develop the numerical control system of machine tools.

Interlacing is like a mountain!

Liu Yuzhu is obviously far behind Zhao Wei, with less than ten years of research and development experience, even if he can find some advanced power battery technology, Liu Yuzhu will not be able to make a breakthrough in a few years.

And according to his understanding, there is currently no advanced power battery technology for Bluestar to learn from.

The model of asking Zhao Wei for help on the Nuwa industrial mother machine project cannot be replicated.

Only by himself.

(End of this chapter)