(PS1: This chapter is a bit of a practical technology (on the principle of the Samsung N7 explosion), don't get dizzy.) Pen "Fun" Pavilion www.biquge.info)

(PS2: I am grateful to the 'Sky Lan who eats the soil' for rewarding 2100 starting coins, in view of the fact that everyone's reward is more powerful, and the weekend will explode a chapter.) Wagging his tail for favorites and recommendations! ）

Like the development of mobile phones, mobile phone batteries are also going through different stages of development to accommodate longer power consumption, lower weight and safer use.

Mobile phone batteries have gone through nickel-cadmium batteries, nickel-metal hydride batteries, and now they have reached the era of lithium-ion batteries.

When the lithium battery is suitable for mobile phones, it quickly occupies the mobile phone market, and the mainstream lithium batteries are basically divided into lithium cobalt oxide batteries, lithium manganese oxide batteries, lithium iron phosphate batteries, ternary batteries, etc.

Each of these types of batteries has its own advantages and disadvantages. Among them, lithium-ion cobalt oxide batteries have the largest energy density, so at present, all smartphone batteries use lithium-ion cobalt oxide batteries. The ternary battery (ternary polymer lithium battery) is a relatively balanced material in terms of capacity and safety, and the cycle performance is better than that of normal lithium cobalt oxide, so Tesla Motors, which consumes more power, began to use ternary lithium-ion batteries instead of lithium-ion cobalt oxide batteries.

IncompetentWhat kind of lithium battery you use, you need to consider the three most basic elements: capacity, size, and safety.

Needless to say, capacity and size, according to Marx's words, the two are contradictory opposites, large capacity inevitably means relatively large size, and vice versa, small size also means relatively small capacity. Even if many means are now used to improve the utilization rate and energy density of lithium batteries, the development speed of this means is a drop in the bucket compared to the consumption of mobile phones on batteries, which is also the fundamental reason for the slow development of mobile phone batteries.

What about security? Unfortunately, the Samsung cup has become an example of the negative teaching material of battery safety.

Samsung's battery explosion principle: no matter what lithium battery is composed of a positive electrode, a negative electrode, an electrolyte and a separator to prevent short circuits, the electrolyte will infiltrate the positive and negative electrodes, and the lithium ions will move between the positive and negative electrodes in the electrolyte to realize the work of the battery. The separator is used to separate the positive and negative electrodes in order to avoid short circuits in contact with the positive and negative electrodes. Lithium-ion polymer batteries use solid or colloidal objects as electrolytes, and in the event of an accident, the solid or colloidal objects will vaporize and, more severely, burn.

As a result, Samsung's battery, which is most seeking to thin the separator to improve energy density, burned all the way and exploded.

In '16 N7 exploded and recalled, unfortunately in '17 N8 continued to explode and recalled. Today's Samsung is deeply affected by it and has not dared to release a phone with a large battery. Sales and mobile phone share have also declined sharply, and the market share has dropped directly from the world's first to the world's third place (17 years of global mobile phone shipment rankings: NO1, Apple, NO2, Huawei, NO3, Samsung, NO100+, Lenovo is not ranked in the mobile phone pile).

And what about the Yuli biological battery that Shen Huai made up? It is completely different, directly bypassing the contradiction between energy density and diaphragm.

In direct words, Yuli biological battery is not a battery in the sense of the word, but a biological energy source, the principle is as follows:

Step 1: Innova photosynthesizes and produces large amounts of (focused) organic matter.

Step 2: Enox bacteria and its friends consume organic matter and metabolize to secrete unknown ions (tentatively known as Inox ions).

Step 3: Innova ions form a potential difference, electron flow forms an electric current, chemical energy becomes electrical energy, and water and carbon dioxide are generated by the accident (which are repeatedly absorbed by Innova).

Step 4: The space of the Yuli battery is limited, the old Enok bacilli and the little partner die (absorbed by Innova), and new colonies continue to be born, and so on.

So judging from the data of the experiment, Eno is not dead, and the power is endless!

Another simple analogy, the home socket is the kitchen, the mobile phone lithium battery (assuming 2000 mAh) is the lunch box (medium size can eat a meal), now brother you are going to go on the road, is it to put the food in the kitchen into the lunch box (the mobile phone is fully charged)?

All the way to the destination (class, work, squatting, waiting for the bus to play with mobile phones), hungry at noon to eat a boxed lunch (the battery is exhausted), the journey is still long, so in the afternoon you find a roadside stall to replenish some energy (find an outlet to charge).

Now I don't think right, what if the destination is remote and there is no place to replenish energy? So people give full play to their ingenuity and make a larger lunch box with enough food to eat two meals (mobile phone battery capacity is larger, or directly bring a power bank).

The contradiction comes, the mobile phone is getting thicker and thicker, the power bank is getting heavier and heavier, and the passengers don't like it but there is no way.

Now Shen Huai appeared in front of you with a Yuli battery and said to you: "Show you a route, the roadside is full of edible fruits!" ”

If you think about it, follow Shen Ye's route and be full, what lunch box do I still bring (throw away lithium electronics and power banks, and install Yuli batteries)!

The question comes again, the fundamental principle of Yuli battery is to convert solar energy into electricity, why not install a solar cell directly?

Yes, there are solar chargers on the market, which are large in size, low in efficiency, inconvenient to carry, and unstable in voltage!

In general, the absorption and utilization of solar energy by Innova is much greater than that of solar panels, and Yuli batteries have both power supply and battery functions.

The large amount of organic matter produced by Innova makes it possible to supply the colony to metabolize even in the absence of the sun.

So when Shen Huai introduced the experimental data to Liu Chuan, the old man was excited to see the hope of Lenovo's mobile business.

Shen Huai was still very cautious and said: "Lenovo's mobile business situation, I believe you are also more clear, there is basically no market, if you rashly launch a new mobile phone, I believe it is very risky." ”

Shen Huai still hasn't said a word - according to the bad reputation of Lenovo mobile phones in the past, basically no one pays the bill.

Liu Chuan still knows the meaning of Shen Huai's words, and also understands Shen Huai's sincerity, Shen Huai did not look for Zhou Hongyi or Ren Zhengfei, but directly found Liu Chuan, which can be regarded as giving him enough face for the old man.

"What do you mean?" Liu Chuan knew very well in his heart that the world would not fall pies.

Shen Huai smiled like a fox, "Kaos and you jointly fund, how about we play mobile business together?" ”

Switching from the biological field to smartphones is not just a span, Shen Huai is like a nouveau riche at this time, he doesn't care that he is not professional and inexperienced, anyway, he has money.

Liu Chuan still kindly reminded: "Now the competition of smart phones is very fierce, the domestic mobile phone Huawei is dominant, even if Rebus's Xiaomi and BBK's OPPO, VIVO can only do fine product classification and barely make a profit, not to mention abroad, Apple is a giant that is difficult to shake, Samsung is now small, but it is a skinny camel bigger than a horse." Xiao Shen, this bowl of soup is not easy to divide. ”

Shen Huai said heartlessly: "I'll pay for it, you think about the technology and figure it out yourself, anyway, I only make batteries, your mobile phone doesn't sell well, I sell the battery to Ren Zhiqiang and Rebus, I believe they will be happy." ”

Such a shameless and irresponsible answer made Liu Chuan almost die without squirting out a mouthful of old blood, but Lao Liu understood that this was the only chance for Lenovo in distress to fight for his life, and he did it! It's a big deal!