The rechargeable battery removal protection board is the battery. He is the power storage part of the rechargeable battery. The quality of the battery directly determines the quality of the rechargeable battery.
　　 The difference between a polymer square cell and a conventional lithium ion cell lies in the production process. The lithium battery is entangled and has a soft volume. The polymer is superimposed and has a hard body shape. For the same volume of polymer and lithium batteries, the polymer has a larger capacity, about 30% higher. And it is safer and the risk of explosion is small.
　　 The composition of the lithium ion secondary rechargeable battery is such that: the cell + protection circuit board. The rechargeable battery removal protection board is the battery. He is the electricity storage part of the battery. The quality of the battery directly determines the quality of the rechargeable battery. The mobile phone board removes the outer casing, and then removes the protective circuit board in the electric board to leave the lithium battery.
　　 The battery core is divided into aluminum shell battery core, soft battery core (also known as "polymer square battery core"), and cylindrical battery core. Generally, the mobile phone battery adopts an aluminum-clad battery core, and digital products such as Bluetooth adopt a soft-package battery core, and the battery of the notebook computer adopts a series-parallel combination of cylindrical batteries.
　　 Advantages and disadvantages of lithium batteries and polymer square cells
　　 The advantage of lithium battery is that the power of discharge is larger than the polymer square core in the same voltage. That is to say, the output performance of lithium battery is good. The power can be used in some devices that require instantaneous high current to ensure the stability of the system. Sex.
　　 The disadvantage of the lithium battery is that its capacity is generally around 800MAH and the lithium battery is unstable in the short circuit and external harsh environment, and the metal shell on the surface is extremely lethal in the short circuit of the lithium battery.
　　 The advantage of the polymer square cell is that the battery capacity is strong, the capacity is large, the same volume of the polymer battery is 20% larger than the capacity of the lithium battery. The battery life is strong under the steady current output state and the surface is flexible material as the outer casing. The short circuit causes the battery to swell and will not explode, only the crack will open. Therefore, the safety disadvantage is that the peak current does not have a large lithium battery. In some cases where an instantaneous large current is required, it is somewhat stretched.