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• Time of issue:2020-04-21
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(Summary description)Too many people have misunderstandings about batteries, etc .: Misunderstanding 1: Whether the battery needs to be activated, and whether the new battery needs to be charged and discharged 3 times, 12 hours each time. Misunderstanding 2: The battery should be charged as little as possible, and the service life will be long when it is less. Myth # 3: The battery will explode if it is charged for too long. Unplug it when it is full. Myth # 4: The faster the charging, the better the battery. Myth # 5: The greater the charging current of the charger, the faster the charging. Myth 6: Wireless charging is not as fast as wired charging. Let's not discuss the reasons for these misunderstandings first. Now let's analyze the characteristics of lithium batteries together and we will understand the specific reasons. The full text is divided into three parts: battery basics, battery protection, and battery charging. (1) Lithium battery basics The composition of lithium batteries The mobile phone batteries that we usually see are all lithium batteries, which are more battery packs in the industry. Lithium battery packs are mainly composed of two major blocks: battery cells and protection plates. The battery cell is mainly composed of five pieces: positive electrode material, negative electrode material, electrolyte, separator and casing. The protection board is mainly composed of a protection chip, a MOS tube, a resistance capacitor and a PCB board. Classification of lithium batteries Lithium batteries are divided into cylindrical batteries and prismatic batteries according to shape. Cylindrical type such as 18650 battery for mobile power and power tools, square battery such as mobile phone battery. According to the electrolyte, it is divided into lithium ion batteries and polymer batteries. Lithium-ion battery electrolyte is liquid, the outer shell is generally hard, generally aluminum or steel shell, such as Samsung's traditional machines are lithium-ion batteries. The electrolyte of the polymer battery is solid, such as the battery of an Apple mobile phone.