Why is battery technology so unfathomable that it has always been a shortcoming in related industrie

Battery science belongs to the category of materials science and electrochemistry, and in the eyes of many people, it is not so lofty compared to information science, in fact, it is indeed not very high. Materials science and electrochemistry are largely experimental sciences, and many research universities can do it, and enterprises can do it, and even, the atmosphere and demands are different, and they can do better than universities.

For example, when our factory made lithium iron phosphate, when we first entered the factory, the director of the battery R&D center lectured for the first time: our material formula is tested by more than 30,000 tests! After years of self-control, I thought to myself, this magic thing is still worth bragging, isn't there mathematical modeling?

Shouldn't the optimal recipe be derived?

Now, I also told the young men who had just entered the factory: The formula of our factory is the result of more than 30,000 experiments by the old director!

There is a direction, we know what performance to have, what ratio needs to be increased, but what is the best, we can only try.

For another example, two days ago, our province held a seminar on new energy strategy, at which Professor Zhang of Tsinghua University made a report. You may think that the report made by the professor at Tsinghua University must be high. No, his topic is simply "how to determine the aspect ratio of prismatic cells and the aspect ratio of tabs".

How is this determined? Or the test, although the thermal work of different sizes can be calculated, but to determine the size of the outer packaging required for different formulations of batteries, it still depends on continuous experiments, and finally comes to a conclusion supported by huge test data. What is even more regrettable is that there is still no mathematical model, and the influence of several parameters is contradictory, and the follow-up work still needs to be continuously tested to finally find a battery of each capacity, with what kind of structure, in order to obtain the balance of temperature rise and temperature rise difference, and there is never a way to get the optimal temperature rise or temperature rise difference.

There is also a problem in this industry, until now, there is no derivation method for the theoretical life of lithium batteries. Similarly, there is no mathematical model to be found, so we can only rely on huge experimental data to find trends. But because it takes too much time, this material is just a bit eyebrow-raising, and well, the new material is here again.

So now, we don't know how to scientifically detect accelerated aging.

It may be because of battery technology, he has not yet reached the level of mobile phone technology, so the development of battery technology is relatively slow, and some cannot keep up with the level of mobile phone development.

He has not yet reached the level of mobile phone technology, so the development of battery technology is relatively slow, this is because the stackyard is difficult, so everyone is not very good at it.

Because this technology requires very mature means to build him, it has always been a shortcoming.

Battery technology, to consider the model, battery capacity, charging safety and other aspects.

The reason is that it is difficult to make substantial progress in battery technology, and there are great limitations.

Battery technology itself isn't all that incomprehensible. The basic principle is still the voltaic battery, that is, the redox reaction.

This is because the stackyard is difficult, so everyone is not very good at it.

That's not true, but the battery doesn't need any technical support.

Because the research of battery technology is particularly difficult and difficult, it is relatively difficult.

I think it's due to the immaturity of the technology.

If we are limited to the idea of chemical batteries, we will not be able to break through the limit of energy density until the day of extinction.

Why! For example, in a room with a certain volume, only one person can carry a bucket of water (a bucket of water does not take up space) into the house, how to hold more water? The answer is to use children to carry water, because children are small, and if you can hold more children in the same room, you can fit more buckets.

Why use lithium as a battery? Everyone has the periodic table on their backs, chemical batteries, the largest number of atoms per kilogram (equivalent to a house) is lithium, each lithium atom (each child) provides a useful electron, and the lithium electrode potential is high, so lithium is used as a battery. When Edison invented the lead-acid battery, he thought of lithium, but due to the technical conditions at that time, lithium was too active to react stably, and the amount of lithium preparation was small, so he had to choose lead as the main material of the chemical battery.

However, chemical batteries must also have electrolytes, which are essential substances although they are auxiliary functions. The metal electrode and electrolyte participate together to complete the process of electron transfer and utilization. Counting these, the energy density of the chemical battery drops by a large chunk.

Theoretically, the maximum energy density is lithium air. Because it theoretically reacts with oxygen in the air to complete the process of electron transfer and utilization. Doesn't it use a little electrolyte?

No way. Moreover, lithium reacts with carbon dioxide and nitrogen in the air, so only oxygen cylinders can be used, and the so-called lithium-air battery energy density laboratory can only reach 1 kilowatt-hour per kilogram of electricity. By the way, there are also aluminum air and magnesium air, they are all commercially available on the market, and the energy density of the existing aluminum air battery is 1 kilowatt-hour per kilogram.

Why not use it in the car, some people say that the aluminum air is a disposable battery and cannot be charged. That's not simple, every city to build an electrolytic aluminum plant, wouldn't it be good to be nearby. The key issue is that no one says, the battery is not as people think, how much power they want to discharge, how much can be put in an instant.

Another key indicator of the battery, power density, aluminum and magnesium are not high. If you want to release the power that can drive electric vehicles, you need to install about 4 tons of aluminum-empty batteries in the car, who wants such a car! It's cool to have 10 million deposits in the bank, and the bank only allows you to withdraw 10 yuan a day, hehe!

By the way, the average atomic child can only carry one bucket of water, and the aluminum child can carry 3 buckets, which is also the basic reason that the theoretical energy density of aluminum-air is second only to lithium-air.

No matter how much coal, oil, and combustible ice is, before the sun goes out, the greenhouse effect of the chemical fuels used by humans kills itself.

Normal charging, different batteries have their own characteristics, and users must charge them according to the method indicated in the manufacturer's manual. In standby mode,** the battery also consumes, so if you want to charge quickly, it is advisable to turn off the phone or remove the battery to charge it. Fast charging, some automated smart fast chargers only indicate that they are 90% full when the indicator signal changes, and the charger will automatically switch to slow charging to fully charge the battery.

It is good for the user to use the battery after it is fully charged, otherwise it will shorten the use time. Memory effect, if the battery is a nickel-cadmium battery, long-term ineffective charging and discharging, will leave traces in the battery, reduce the capacity of the battery, this phenomenon is called the battery memory effect. Erase the memory by completely discharging the battery and then refilling it.

Discharge can use the discharger or charger with discharge function, you can also use the standby standby mode of the mobile phone, if you want to accelerate the discharge, you can turn on the display screen and the light of the ** button. To ensure that the battery can be recharged, the time should be controlled according to the instructions in the manual, and the charge and discharge should be repeated two to three times. Battery storage, lithium batteries can be stored in a clean, dry and ventilated room with an ambient temperature of -5C-35C and a relative humidity of no more than 75%, and should avoid contact with corrosive substances and keep away from fire and heat sources.

The battery level remains between 30% and 50% of the nominal capacity. It is recommended to charge stored batteries every 6 months. Purchase batteries, 1. Choose battery products with "national inspection-free" and "China famous brand" logos and local brand-name battery products, and the quality of these products is guaranteed.

2. According to the requirements of electrical appliances, select the applicable battery type and specification size, and purchase batteries suitable for electrical appliances according to the size and characteristics of electrical power consumption. 3. Pay attention to check the production date and shelf life of the battery, and buy the battery (new battery), the new battery has good performance. 4. Pay attention to the appearance of the battery, and choose a battery with exquisite packaging, neat and clean appearance, and no signs of leakage.

5. Pay attention to the logo of the battery, and the battery trademark should indicate the name of the manufacturer, the polarity of the battery, the battery model, the nominal voltage, the trademark, etc.; On the sales packaging (such as 2 heat shrink or 4 heat shrink, or hang tag hanging card) should have a Chinese factory address, production date and shelf life or the deadline for indicating the shelf life, and the number of the implementation standard (generally the national standard GB T-). Do not buy products without Chinese factory name, no production date and shelf life, or no expiration date indicating the shelf life, and no implementation standards. When buying alkaline zinc-manganese batteries, you should look at whether the model has the words alkaline or lr.

6. Because the mercury in the battery is harmful to the environment, in order to protect the environment, the battery marked with the words "no mercury", "0% mercury" and "no mercury" should be used on the trademark when purchasing. If you want to know more about it, you can consult Shenzhen Changing Digital ****, thank you!

At present, there is a relatively large difference between laboratory battery technology and market battery technology, and the reason is the problem of cost and safety, the cost problem is good to say, it can be filled by optimization and other advantages, safety is more deadly, and no company will take risks with safety.

With the rapid development of science and technology, more and more technology products such as smart phones, tablets, ultrabooks, etc. have gradually entered our lives, although the hardware and software of smart devices have developed rapidly, but still can not get rid of the limitation of battery capacity is too small, many smart phones can not even get rid of the fate of "one charge a day", so restricting the progress of science and technology battery technology why can not get a major breakthrough?

I believe that many people have heard that a certain laboratory or company has developed a new battery technology, which is expected to solve the problem of current mobile devices or battery life, but it has not come to us for a long time, and the battery we use is still the eternal lithium-ion battery, are scientists lying?

In this field, we have been trying to develop breakthroughs, but due to the basic situation of society, battery technology has not been put in the first position of development, and modern technology can not keep up, no technology can only find their own way, no new technology, can only find a breakthrough point little by little, there is a problem of funding, there is not much money investment, it is difficult to implement technological breakthroughs,

In recent years, driven by the rapid development of China's new energy vehicle industry, the power battery industry, as the core component, has also developed rapidly, and the scale of China's power battery industry ranked first in the world in 2017. However, at the same time of rapid development of the industry, there have also been problems such as the sharp decline in corporate profits, the lack of core technology, overcapacity and the difficulty of utilization, which should be actively responded to from strengthening the top-level design, enhancing the R&D strength of enterprises, reducing the production costs of enterprises, improving the first-class system, and accelerating the cultivation of talents, so as to boost China's new energy vehicle industry to become bigger and stronger.

Because the country pays close attention to environmental protection, good batteries are heavily polluted.

Battery technology has been developing, but it has been slow to break through the technical bottleneck.

There is no breakthrough in the civilian ones, and the military ones are very awesome! A breakthrough in nuclear power technology in the future, anything that uses batteries will not need to be recharged and replaced!

It is very difficult to make a revolutionary breakthrough in battery technology.

First of all, this question you asked is very good, the battery industry is not like other industries, it needs continuous research and development, testing, data collation, and the accumulation of various experiments to be conclusive

Because the battery is seriously polluted, if it is used up and thrown away, it will affect the ecological environment.

It's rare that it takes thousands of experiments to break through a point.

The battery technology is OK, right?,Isn't there a power bank that can be charged directly with the mobile phone?,No data cable,

Because of the technical protection, it is like the gradual evolution of the CPU in the past.

If there is a new substance.

Replace the original substance.

When mass production is not reached.

The cost is quite high.

Even if it comes out, it can't.

Commercialization.

Under the condition that the technical level allows, the cost of a well-made and super-large mobile phone battery is much higher than the cost of an ordinary battery, so that the price of a super battery life mobile phone may be sold at least 1,000 yuan or even tens of thousands. In this way, this will inevitably lose part of the market, which is also an embarrassing problem for many mobile phone manufacturers.

That battery will **, so.

The problem of power storage and storage is still being solved, and it is also happy.

So far, this is a big breakthrough.

It's fast Now technology is advancing very quickly.

Don't take your time, it's not much better now than before, and what you want will come true.

The battery has been developed and will be promoted to the market this year.

It's getting smaller, and the capacity is getting bigger.

There is no new technological breakthrough and new material application.

There will be a big breakthrough in the future.

Mobile phones are now getting more and more advanced, with larger screens and more features. Have you noticed that although the screen of today's mobile phones has become larger, the standby time is longer than that of previous phones, which indicates that the battery capacity of the mobile phone has increased? In general, no matter how many models there are in the mobile phone battery, there are only two ways to install it on the phone.

One is the built-in battery, and the other is the external battery.

In the past, mobile phones mostly had external batteries, except for Apple phones, which used built-in batteries from the beginning. Most mobile phones have external batteries, but in recent years, it seems that many mobile phones have started to use built-in batteries. Why is this so?

What are the benefits of using a built-in battery that makes these mobile phone manufacturers scramble to join the built-in battery army? In fact, the built-in battery is not an advanced technology, and you only need to change the interface. There are still many benefits to replacing the mobile phone battery with a built-in one.

The biggest advantage is that the battery capacity of the mobile phone becomes larger and can be made very thin, like the built-in battery, which can be made into various shapes because it is built-in. The built-in battery can even be made flat and attached to the motherboard of the phone, so that the thickness of the phone is reduced and it can be made ultra-thin. On the other hand, although the thickness of the flat battery is reduced, the width and height are increased, and the volume increases, resulting in more power being stored.

This is why mobile phones with built-in batteries have a long standby time.

Another benefit is to save the internal space of the mobile phone, because the built-in battery can be made into various shapes, then the internal space of the mobile phone can be designed at will. For example, Apple's mobile phone has a built-in battery in the shape of chewing gum, so the motherboard can be made into a long strip shape. The battery and the phone parts do not interfere with each other, so designers can better play their own ideas.

After talking about the benefits, let's talk about the disadvantages of the built-in battery of the mobile phone, the biggest disadvantage is that the mobile phone is not easy to repair in case of problems. Generally, if the mobile phone with external battery crashes or keeps restarting, we only need to open the back cover of the mobile phone and then cut out the mobile phone battery. The phone won't restart because it's out of battery!

Then we can fully charge the battery and flash the machine. However, once the built-in battery keeps restarting, we have no way to take out the battery, so we can only let the phone keep restarting until the power is exhausted before charging and flashing.

If the external battery is used for a long time, we can buy another one and install it, so that the old battery can be easily replaced. The built-in battery has been used for a long time, and we can only go to the mobile phone repairer to replace it, which increases a lot of costs. Some built-in batteries are even soldered together with the motherboard, which increases a lot of risk if you replace them, so replacing the battery is still worry-free and cheap.

To sum up, the built-in battery is not advanced, but rather a trend. Everyone is pursuing the thinness and lightness of mobile phones, and only the built-in battery can be used.