Is the large-capacity battery bulky?

Hello there! Generally, the larger the battery capacity, the more power is stored. The longer the phone is used. Now the battery has a virtual standard. In fact, the capacity is not that much. It is not bad to think that the power of 8380 mAh can reach 6000. The battery is also a reliable point of quality for the original brand. However, this price can be bought and used. If the effect does not meet your expectations then you can buy two complementary uses.

Large-capacity batteries are generally larger than conventional batteries. That's because the same ratio of chemical materials is used in the battery, and the volume is increased for large power. Of course, if the process is improved, new technologies are developed, new materials are used, and the ratio is increased. Then you can increase the power in the original volume. Of course, the price will increase accordingly.

Capacity (energy) and volume relationship, there is a proper term for volume capacity (energy) density.

There are many types of batteries here is a lithium-ion battery:

Whether it is a button battery, a cylindrical battery, a square battery or a soft battery, the capacity of the battery is determined by the quality of the positive electrode and the negative active material that can be utilized in the battery. The capacity per unit mass of the positive electrode and the negative electrode (gram capacity) is limited. Under the premise that the new positive and negative electrodes are not developed, the use of the inactive material can be reduced, and the energy density of the battery can be improved, under the same mass and volume. Provide the capacity of the battery, that is, increase the capacity density, for example, reducing the thickness of the electrode substrate, reducing the thickness of the steel shell, reducing the amount of binder used and like.

Regarding the capacity density, from the above knowledge, you can know:

The same battery type can achieve greater capacity by increasing the volume. For example, the cylindrical battery 21700 can achieve 5Ah, and the smaller 18650 can generally achieve 3-4Ah. The square battery has 300Ah and is much larger than 30Ah.

Different battery types, due to different structural designs and different energy densities, can be roughly understood as bulk density, soft pack > square > cylinder, so the specific volume and capacity of the three depends on the specific situation.

In addition to the different shapes and structures, the use, design and manufacturing process of the battery also determine the relationship between capacity and volume. In terms of use, the battery is divided into a capacity type battery and a power type battery, and the name is known to have a higher energy density, that is, a larger volume capacity. At the design level, the level of active material is too poor and the natural energy density is lower. In terms of manufacturing process level, the level of each family is different. Low-level manufacturers cannot reduce the amount of inactive materials and increase the energy density.

Capacity is generally proportional to volume.

Guess that you want to know the specific capacity of the battery. There are two kinds, one is the specific capacity, that is, the amount of electricity that can be discharged per unit weight of the battery or active material; the other is the volumetric capacity, that is, the unit volume of the battery or The amount of electricity that the active substance can emit.

For example, the size of the mobile phone battery is small, so the volumetric capacity is required to be higher.

It is related to the storage capacity of the electrolyte and the amount of the electrolyte, and the amount of the same electrolyte is generally proportional to the volume.

If you do not specify other variables, the volume and capacity are not necessarily related, that is, it does not matter.

The largest battery capacity of mobile phones should belong to Jinli M2017, equipped with 7000mA capacity battery. As a business mobile phone, it is a good way to maintain its life. However, after comparison, it can be found that the body thickness of the Gionee M2017 is 10.78mm and weighs 238g. At present, mainstream mainstream models of 3000mA battery capacity, such as: Jinli S10, 3450mA battery, thickness is 7.35mm, weight 178g; Huawei glory 9,3200mA battery, thickness is 7.45mm, weight 155g; millet 6,3350mA battery, thickness It is 7.45mm and weighs 168g; iPhone7, 1960mA, thickness is 7.1mm, weighs 138g.

Seeing that the small partners here should know the first important reason, the technology of mobile phone battery is not mature enough now. If the capacity of mobile phone battery is large, its size and weight will increase. The 7000mA M2017 is more than the other mainstream machines. The model is thicker by 3mm+, the gap is still very large, and the weight is 60+. It can be said that in order to take care of the customer's experience, the mobile phone battery can't really be bigger. Otherwise, the phone will be spit out as a brick when it is big.

It is necessary to think of the bombing of the Samsung note7 last year. Samsung has been a giant in the smartphone industry and has been ranked first for many years, but even so, there has been a battery cell explosion that should not happen. It can be seen that the technology of smart phone batteries still needs to be improved. Therefore, for security reasons, mobile phone manufacturers must put the mobile phone battery on a conservative capacity, so that it will not happen.

The third reason is the length of charging time. Large-capacity batteries also mean that charging time will be longer, which is not allowed for fast-paced modern people. It gives you a 7000mA half-powered mobile phone and a fully charged 3500mA mobile phone, which one is more for you. Is there a sense of security? Anyway, Xiaobian is the one who will definitely choose full power, there is no reason.

The three reasons why mobile phone batteries are not big are: size, charging time and safety.

However, the latest news, the world's first battery-free mobile phone has been born, this phone is still very prototype, you can call through Skype, and can receive the base station signal. It absorbs energy into the surrounding environment, mainly light energy. (The minute is the rush of technology movies. On that day, if you can invent a kind of chip for humans, then you can absorb energy around you without eating.) However, the problem is that this phone is too prototyped and can absorb a small amount of electricity. If you want to play a king's glory, I am afraid that it will be basking in the sun at two o'clock in the afternoon. I don't know if it can be absorbed. However, it is still worth looking forward to.

Also, it is the graphene battery that Huawei first transmitted. The representative of this is that Huawei Watt Lab released the fast charging technology of 5 minutes of full charge of 3000mAh battery at the 56th Japan Battery Conference. Among them, glory magic, it is equipped with this technology. According to estimates, its 2900mAh battery, with the original 5V/8A40W rated power charger, can charge 40% in 10 minutes, can be charged 89% in 30 minutes, 55 minutes can be fully charged. Of course, this is just graphene technology, not "graphene battery." Foreign research institutions have developed a 20-second high-speed mobile phone lithium-ion cathode material through graphene, but it is still in the foreseeable future. Huawei has cooperated with the National Graphene Research Institute of the University of Manchester and hopes to realize the commercialization of graphene batteries as soon as possible.

The unrecoverable nature of the one-time blown fuses requires the designer to be extra cautious in the selection process to avoid damage to the battery due to mistakes in battery assembly, testing, and use.

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