苹果耳机un3481标签代表什么，请问苹果un3481是什

　　苹果耳机un3481标签代表什么，请问苹果un3481是什么？

　　最近有很多热心网友都十分关心苹果耳机un3481标签代表什么，请问苹果un3481是什么？这个问题。还有一部分人想了解苹果耳机un3481标签代表什么。对此，和记百科小编「远行的风」收集了相关的教程，希望能给你带来帮助。

　　

苹果un3481是什么

 

　　 演示机型：Iphone 13系统版本：iOS15.4

　　苹果un3481是锂离子聚合物电池。锂聚电池通常是由数个相同的平行子电池芯来增加放电电流，或由数个电池包串联来增加可用电压。国际运输中危险品都有对应的un号和相应的危险品的等级，通常根据不同的物品等级与对应的un号来申请舱位。

　　

锂聚合物电池限制：

 

　　1、所有的锂离子电池都具有很高的电量状态（SOC），可能导致层分离、寿命减低和效能降低的问题。在硬式电池中，硬壳能防止极层分离，但是软包装的锂聚电池包本身没有这样的压力。为了维持表现，电池本身需要外壳来保持原来的形状。

　　2、锂聚电池过热可能导致膨胀或起火。

　　3、在负载放电时，当任何电池芯（串联情况下）低于3.0伏特时都应该立即停止负载供电，不然将导致电池没办法回到完全充电的状态。或造成日后在负载供电时会大幅的压降（内阻升高）。这个问题可以透过与电池串连的芯片来防止电池过充与过放。

　　

苹果耳机un3481标签代表什么

 

　　对应的危险类别是9类危险品, 这个属于9类危险品,出口必须需要做危申报,深圳出这一类货物是可以免危包证申报的

　　

　　【英文介绍/For English】：

　　

　　Demo model: Iphone 13

　　System version: iOS15.4

　　Apple un3481 is a lithium-ion polymer battery. Lithium-polymer batteries usually use several identical parallel sub-cells to increase the discharge current, or several battery packs in series to increase the available voltage. Dangerous goods in international transportation have corresponding un numbers and corresponding levels of dangerous goods. Usually, the space is applied for according to different item levels and corresponding un numbers.

　　

Lithium polymer battery restrictions:

 

　　1. All Li-ion batteries have a very high state of charge (SOC), which can lead to problems of layer separation, reduced lifetime, and reduced efficiency. In a rigid battery, the hard case prevents the separation of the pole layers, but the soft-packed lithium-polymer battery pack itself does not have such pressure. In order to maintain performance, the battery itself needs a casing to maintain its original shape.

　　2. Overheating of lithium-polymer batteries may cause expansion or fire.

　　3. When the load is discharged, when any battery cell (in the case of series connection) is lower than 3.0 volts, the load power supply should be stopped immediately, otherwise the battery will not be able to return to a fully charged state. Or cause a large voltage drop (internal resistance increase) when the load is powered in the future. This problem can be prevented from overcharging and overdischarging the battery by means of a chip connected in series with the battery.