lithium battery knowledge

Summary

The 18650 numbers in the 18650 lithium battery represent the external dimensions: 18 means a diameter of 18mm, 65 means a length of 65mm, and 0 means a cylindrical battery. It is a standard lithium-ion battery model set by the Japanese SONY company in order to save costs, called 18650 lithium battery.

1. The best 18650 lithium battery pack

The 18650 numbers in the 18650 lithium battery represent the external dimensions: 18 means a

Lithium batteries such as mobile phones and notebook computers are used as secondary batteries, which can be charged multiple times and are convenient to use. However, there are many opinions and even misunderstandings regarding the charging method of lithium batteries.

So, how to charge the new lithium battery correctly? Xixi has sorted out the commonly used mobile phone lithium battery charging methods. Of course, you must know why. The correct use of lithium batteries is

BMS Key Issues

1. Battery voltage measurement of BMS(CVM)

Although BMS has many functional modules, this article only analyzes and summarizes its key issues. At present, the key issues relate to battery voltage measurement, data sampling frequency synchronization, battery state estimation, battery uniformity and balance, and accurate measurement of battery fault diagnosis.

The difficulty of battery voltage measurement lies in the following aspects:

1.1 The battery pack of an electric vehicle has hundreds of cells

Definition of the battery management system

The main task of the battery management system is to ensure the design performance of the battery system, which can be broken down into the following three aspects:

1) Safety, BMS protects the battery cell or battery pack from damage and prevent safety accidents;

2) Durability, BMS make the battery work in a reliable and safe area, and extend the service life of the battery;

3) Power to maintain