Lenovo Mobile #p1 came to #p1 behind the story series

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Lenovo Mobile #p1 came to #p1 behind the story series

This post finally by Ben on the journey of the grass on 2015-8-28 15:48 edit

P1 released soon research and development, product manager, project manager greatly
Dedicated
A product is coming soon

Do you want to know more about the story behind P1?
Do you want to know why the battery is 5000 mah instead of 6000 mah?
Do you want to know the origin of the P1 name?

Grass story essence will share with you
The story behind--P1
Guest:Allen at the machine

Story Link:
The origin of the first period name
Recently many people asked me, why call P1, and not as before called a P90 or simply called P7 because P series has done six generations of products!
Others say don't call P, because Huawei's P series is too successful, called P will be seconds off!
But I want to say, the first generation P series was born, Huawei's P is still struggling, have wood?
Our team's heart of the P-series, should be a re-definition of long-to-phone products, it not only long, but also to have comprehensive performance, is the real benefit of business people to help!
P1 's name has a threefold meaning. 1 if everyone Niang P1, will find in front is the McLaren classic sports car P1, yes, we want to be used as a sports car spirit to do P1, let it become a classic. 2 We're going to do the No 1 in P series phones, beyond all the previous 3 This is Lenovo streamlined products, rallied after the first listed mobile phone, we hope to start over!
This is the name, and tomorrow we'll talk about batteries!
All the text is P1 hand, if there are errors, please forgive me! If you like it, please give me a great!

The second issue is about the batteries.
Recently with the test of the user to communicate more is the battery, a lot of people asked me, "Why not the battery small, like Z1 4100mAh, so that the body more thin?" "Why not, like M5, do a 6000mAh, complete the ultimate?" "Why do you have to do 5000mAh?", let me talk to you.
First of all, back to our interpretation of the needs of users, long-standby users in the end need to how long standby time? How much power is enough for a heavy user? To this end, we conducted more than 200 user research, the results found that: 1 heavy users every day to play machine 8 hours, they need at least a day, the most unbearable is the afternoon everywhere looking for Chargers; 2 Most users feel that two days a dash is very good, if you can do three days a rush that the surprise.
As a results, we tested all the user-used scenarios and counted the power consumption of each application. And then according to the user's usage habits added. Finally found that a day to play machine 8 hours, at least 2800mAh of power, for overweight users, a day down, at least 4500mAh of power.
So, the goal of our project becomes, at least to let overweight users spend one day, let heavy users spend two days, let the majority of users spend three days.
This is the origin of the 5000mAh.
After setting the 5000MAH specifications, we carefully study the ID, how can we do both thin, battery and large? For this we have searched all the battery suppliers, researched all the designs including trapezoidal batteries, and decided to use a battery with a energy density ratio of up to 620ED. Some might say that this energy density is not high, but if I tell you that this energy density ratio can support 4.5A charging, you will know it is very powerful. Ultimately, the effect we achieved was that the product was only 187 grams, lower than all the same power products (that 6000mAh of friends, weight 214 grams), width 75.6mm, lower than most 5.5-inch mobile phones; perfect radian design, the thinnest place only 4.6mm.
Also, we have taken into account when we chose 5000mAh. That's why you can't do 6000mAh, challenge the industry's limits? In the end, we rejected the idea for three reasons: 1 for most users, battery safety is a must to consider, the larger the capacity, the higher the security risks. 2 6000mAh is too heavy to affect user perception. 3 6000mAh battery, in fact, the largest can only allow heavy users for 2.5 days, he still has to 2 days a dash, the value of the user is not so big, and if the 5000mAh optimization done well, can be in standby time to match 6000mAh.
The results of the final measurement also prove that, under the same test conditions, the P1 of the heavy use coefficient reached 2.02, that is, for most heavy users, 2 days a punch no problem, and a friend of the product, 6000mAh battery, the heavy use coefficient of 1.88, is not as good as P1.
So the battery is big, not necessarily strong yo!

This is the third conversation, quick charge.

After watching the conference of the old week, suddenly found that the current machine if not say their mobile phone can be fast charge, are embarrassed to greet others.
This is also explained from another aspect, fast charging is just needed, there is wood there?
So, today I want to talk to you about fast charge.
First of all, I would like to first clear a concept: according to the physics principle, fast charging speed is mainly determined by the power of the charger. This is like a car, the displacement determines the highest speed, so when we listen to a manufacturer to say how to charge how NB, should first ask: how many watts of your charger? 15W fast charge will never dry more than 20 watts of fast charge, this is the innate decision, let you say the hype, but also can not change the facts.
Second, I want to talk about the fast-charging genre. At present, for the fast-charge of a large number of nouns, a variety of marketing packaging let people dizzying, in fact, the most fundamental technical principle only two: high-voltage small current and low-voltage high-current. The former Representative is Moto Turbo fast charge, and the latter representative is the Vooc of friends. Charging is actually a process of transporting electrical energy, if it is likened to water, then charging is the process of transporting water from Pool A to pond B. People who have a common sense of life know that the speed of handling is no different from the two methods: 1 increase the pressure of Pool A, let the water flow faster, 2 increase the bandwidth, so that the simultaneous flow of water more. High Voltage low Current is the principle of method 1, and the low voltage high current is the principle of Method 2.
Some might say, can you increase the pressure and increase the bandwidth? Well, theoretically, it works, but there are two problems in operation: 1 Heat is huge, the peak duration is too short, 2 is expensive, and for battery life, safety is a big risk.
Next, the problem comes, high-voltage small current and low-voltage high-current which is better?
In fact, the so-called all roads through Rome, from the charging speed, high-voltage small current and low-voltage high-current no absolute difference, as long as the charger power in place, you can achieve approximate results. But from the user's point of view, it is slightly different. First, in order to increase the bandwidth, low-voltage small current needs a special design of the charging line, but also expensive, which means that users have to carry the line, and once lost, to spend a sum of money; second, from a safety point of view, the risk of high-voltage large current is that its charging circuit is mostly on the charging plug, The plug will be hot, but the plug is actually not easy to do thermal design, and the influx of large currents, the life of the mobile phone will be a test; the risk of high voltage small current is that the charging circuit and IC design on the mobile phone, so the phone will be hot, long time fast charging phone will become a warm hand treasure, Thermal design is therefore a challenge for most manufacturers.
Said so much, we must be very concerned about the P1 of the fast charge is how to design? How's that compare with VOOC? What's black technology?
First, the P1 uses a 24W high-power charger, from the displacement on the exclusion of many opponents;
Second, P1 use of high-voltage low-current technical solutions, so do not pick the line, any MICRO-USB charging line can enjoy the fun of fast charging;
Thirdly, the charging socket of P1 adopts 4 gear design, and adjusts the charging speed adaptively.
Four, the P1 measured charge speed, seconds to kill all products, with long standby mode, realize charging five minutes, three hours of talk;
If this is not NB, then we have two black technology:
1 Fast Otg,5000mah P1 can be charged externally, current up to 1A, and most of the charging treasure flush, seconds to kill the opponent's 0.5A charge;
2 Use the independent chip at any time to monitor the system problems, adaptive adjustment of the charging voltage and current, reduce the risk of heat and prolong battery life;
Some may ask, rushed so fast, the risk of fever?
Here have to mention P1 heat dissipation design, basically can complete the black technology full use, that cost of flowers let me distressed.

The fourth issue is about the dragon-Tamer story.

Recently in various groups, I was the most questioned is, as a product Wang, how did you choose 615 this hot and power-efficient platform? The table tells me, you play the frequency again, the machine to get the card again? ......
In fact, in the face of 615 of this controversial dragon platform, I particularly appreciate the research and development manager Gigi Comrade to P1 definition, called "dragon Trainer", below we talk about P1 how to tame dragons.
First of all, from the design concept, we choose 615, to a large extent, because of Qualcomm's technical strength, especially in the baseband, in the realization of the full netcom, graphics and stability, although 615 in the running sub-point, but from the market price can be seen, 615 more premium.
After deciding on the use of 615, a light wind light day, I said to the development of Gigi Comrade:
For the 615, we have two simple requirements: 1 than the same level of the competitor temperature low 2 can not reduce frequency.
So I saw the black line on the face of Jill's classmate .... Requirements are simple, to achieve the real TM difficult.
After a while, suddenly one day, Gigi excited phone me:
Tell you a good news, after we measured, XX mobile phone temperature 43 degrees, XX mobile phone temperature 45 degrees, XX cell phone good temperature 40 degrees.
"Does this have anything to do with our knitting?" "I'm a little impatient.
"Because we measured the result to be 39 degrees," Gino called it a Pride.
"Quite ok!" How did you do that? ”
So then, I was popularized a heat dissipation theory class, summed up is actually doing three things:
1 with heat pipe, and the volume is not small;
2 with silicone grease, graphene heat dissipation;
3 optimization of structural design;
But after class, my face green, these things are too expensive, it is the United States knives, the recent exchange rate has risen ....
However, considering the results are good, the user's expectations, the cost of high will endure it!
Perhaps people will ask, heat pipe/silicone grease, listen to not big on Ah!
Well, I admit that we are not packing, so we can only copy the introduction of friends.
The so-called heat pipe, "Red dress leader" in the cool of the conference to help us explain: space water cooling system, satellite cooling principle. Here omit 1000 words, everybody can degree Niang.
The so-called silicone graphene, a friend of the business to give a special tall on the name, called "Ice nest cooling", we can also degree Niang.
Optimize the structure design, this involves too many secrets, cannot say, said a bunch of research and development big guy must cut me.

Lenovo Mobile #p1 came to #p1 behind the story series