Why mobile phone batteries tend to be irreplaceable

A long time ago, mobile phones used aluminum-shelled batteries, and the shell was made of metallic aluminum, which was very strong. However, there are great disadvantages, first of all, the anode material inside the battery is stirred by water and graphite powder, and then the water is removed by baking. If a battery contains more than enough water, the water will be electrolyzed to produce gas, and the sturdy housing will allow the gas to escape.

It's like a balloon that keeps blowing, it can happen at any time**. There is also a situation where there is a short circuit inside the battery, and the heat will cause expansion, and the internal gas will also have nowhere to leak, and there is a possibility of **. The larger the capacity, the greater the chance, and it's not just about burning.

At present, the outer packaging of most smartphone batteries is made of a soft and light aluminum-plastic film material. With a thickness of only 121 microns, it is made up of three different layers of material that are perfectly bonded together, and the maximum stretch depth on one side can reach a centimeter without breaking.

The advantage of pouch aluminum-plastic membrane battery is that it is safe, will not cause ** in most cases, and can carry more expansion gas; The outer layer of the battery is also thinner than that of the aluminum shell, and the utilization rate of materials added to the internal space increases, so that the battery can be made with high capacity, light weight, and good circulation.

However, the aluminum-plastic film material is like a piece of paper, although it will not be damaged when folded in half, but the most taboo sharp weapon scratches, once scratched, the battery will be scrapped, and the internal electrolyte will flow out, flowing into the mobile phone motherboard may also lead to the scrapping of the mobile phone.

At present, the mainstream mobile phone battery is actually using the space to add the shell to increase the capacity and control the thickness of the mobile phone, so the built-in is a better choice. You can't have the best of both worlds, and you have to accept that if you like a phone that's thin and light, it also has a high capacity.

Because the capacity requirements of batteries are getting larger and larger, in order to meet the requirements of large capacity, smart phones now use lithium polymer batteries, and lithium polymer is a pouch battery, its outer surface is a very thin aluminum foil, not the aluminum shell or steel shell used in the Nokia era, so that the capacity will be relatively large under the same volume and weight. The aluminum foil is relatively thin, it is easy to break, if it is disassembled by the user, it will basically be broken, once the skin is broken, the battery will be useless, and it will even be serious **, so it should be built-in. Speaking of **, the use of lithium polymer batteries is not only large capacity, but also for safety considerations, the previous kind of aluminum shell, steel shell battery, due to the full enclosure, if a short circuit occurs inside the cell, it is very likely to occur, and the soft pack lithium polymer will not, it will only swell, leakage, serious **.

Although many aluminum-shell batteries are now made of explosion-proof lines, the safety is still a little worse. The 18650 steel-shell battery is more powerful, and many power banks use this kind of battery cell (although there are gradually more lithium polymer power banks, 18650 is still the mainstream). So don't disassemble the power bank by yourself.

PS: Lithium polymer can also be made into a removable battery, the front and back of the battery are added with steel sheets and then injection molded, but the volume and weight of the battery have increased, and the economy and manufacturability are not good.

Here's why:

Reason 1: Security issues.

A few years ago, news reports from time to time will hear that there are users using copycat batteries and accidents, although it was finally confirmed that it is a personal problem of the user, but the occurrence of such revelations will affect the image of the mobile phone brand. In view of this, mobile phone brands simply switch to built-in batteries in order to eliminate copycat batteries to minimize the risk. Therefore, the most we have heard recently is the accident of mobile power supply.

Reason 2: The design of the internal space of the mobile phone.

The second is that users have higher and higher requirements for the appearance design of mobile phones, and they need large screens and need to be light and thin enough, and the built-in battery can improve the waterproof and dustproof specifications of mobile phones, so mobile phone brands have to abandon the replaceable battery design and use a more space-saving built-in battery.

In addition, switching to a built-in battery can reduce the need for users to replace the battery by themselves, which greatly reduces the loss of the contact point between the battery and the mobile phone, resulting in poor contact.

Reason 3: The manufacturer wants you to change your phone earlier.

Regardless of the most critical point, it may be the interests of mobile phone manufacturers themselves. Let's imagine, if the mobile phone can replace the battery by itself, the user will extend the replacement cycle, which is quite unfavorable for the mobile phone brand. After switching to the battery, when the battery life is lost to a certain point, the user can only choose to give up the mobile phone and replace the battery directly, and the final benefit is the mobile phone manufacturer.

Why did the development of mobile phones evolve into all-in-one PCs

With the continuous replacement of mobile phones, people pay more attention to the thin and light characteristics of mobile phones, and in order to meet the needs of consumers, businesses have gradually improved the parts of mobile phones, and finally combined many parts into one, making him thinner and lighter, and the touch in his hand is also better. And with the popularity of all-in-one PCs, we have found that the security of mobile phones has improved, and the service life of the battery has also increased.

In the past, when using an old-fashioned mobile phone, once there was a problem with the battery, we would randomly find a repair shop to replace a relatively cheap battery, and the safety problems caused by many batteries often appeared, and the emergence of the all-in-one machine made it impossible for us to disassemble the battery at any time, avoiding a lot of safety problems.

In addition, the old-fashioned mobile phone will produce a lot of dust during the disassembly process, and there are many parts, and a lot of dust will enter, which will affect the service life of the mobile phone and the usual sense of experience.

At the same time, after the mobile phone evolved into an all-in-one machine, it is also more beautiful, the style is more diverse, and the size is more arbitrary, the old mobile phone is very bulky, because considering the inlay of the battery and parts, the design sense can not fully comply with the aesthetics, there is no more room for choice, and the all-in-one machine also solves these problems to some extent.

Nowadays, the aesthetics of mobile phones have also become an important consideration for people to choose mobile phones, and mobile phones have also invisibly become a weight for people to whitewash their own value.

Why do mobile phone batteries tend to be irreplaceable, and why? This is the development trend of the times, because in the previous mobile phone, its battery can be replaced, at that time we all had a few spare batteries, so use universal charging.

After the battery is fully charged, once the mobile phone is out of power, then you can directly replace the battery, and the mobile phone can be fully charged, the reason why the current mobile phone battery can not be replaced, is also because of the development of this era, the development of this era, it means that this mobile phone is a consumable electronic product, basically a mobile phone will be replaced within 3 5 years, because the mobile phone of this era is updated faster and faster, basically dozens of mobile phones are produced every year, This has led to a very rapid depreciation of mobile phones, and mobile phones are also a very large consumption of electronic products. <>

Then the mobile phone battery replacement is very troublesome, and it needs to be charged, which is also a very unsafe measure, so in order to avoid accidents, mobile phone manufacturers will set the battery to be non-replaceable, because they are afraid of accidents when replacing the battery to charge the battery, and there is a mobile phone manufacturer to make money, so it is impossible to say that you can use multiple spare batteries for a mobile phone, so how to make money for mobile phone manufacturers, so for various reasons, These phone manufacturers set the phone's battery to be non-replaceable. <>

The reason why the current mobile phone batteries are based on non-replaceable positives is because the current mobile phone charging is very fast, and the fastest charging speed can reach 15 minutes to fully charge a mobile phone.

And now the charger has fast charging, so the charging rate is very fast, and there is no need for a spare battery, so there is no meaning, and the spare battery charging is also more troublesome, sometimes even forget to charge the battery, the current mobile phone is basically used in fast, basically 15 minutes can be fully charged with a mobile phone, and there are mobile charging treasures everywhere, there is no need to have a backup battery. <>

In general, the current mobile phone battery tends to be irreplaceable, because of the development of this era and safety reasons, in order to avoid accidents, then the mobile phone battery is basically not removable, and for the current era, fast charging has appeared, then the charging speed is also very fast, then the backup battery does not have any effect, basically 15 minutes can be full of a mobile phone, then the role of the backup battery is very low, and very troublesome, Remember to charge the spare battery.

Today's mobile phones tend to use non-replaceable batteries, mainly because the service life of mobile phone batteries is getting longer and longer, and the battery capacity is getting larger and larger, and such a design is more conducive to charging and charging considerations. The cost of production of mobile phones. That's why today's phones design their batteries this way.

Because the cost of mobile phone battery is actually relatively large, if you use the mobile phone for another three or four years and then replace a battery, in contrast, it is more appropriate to buy a new mobile phone to replace; Moreover, the manufacturing process of mobile phone batteries is more complex and very wasteful of resources, so if the mobile phone is replaced separately, the battery is not conducive to environmental protection.