Battery capacity sorting, in simple terms, means sorting batteries by capacity 

and performance.

 Battery capacity sorting machine The specific process is as follows:

Definition and principle:

By charging and discharging each battery (usually a lithium battery), 

the computer records the data of each test point.

Based on these data, the capacity and internal resistance of each 

battery are analyzed to determine the quality level of the battery.

Purpose:

Quickly and accurately evaluate the capacity and performance of batteries.

Classify and group batteries, that is, select single cells with the same internal

 resistance and capacity to ensure the performance stability of the battery pack.

Application scenarios:

New batteries need to be capacity graded before leaving the factory to ensure that the quality 

and performance of the batteries meet the standards.

Old batteries also need to be capacity graded before cascade utilization to evaluate their remaining 

capacity and performance and determine whether they are suitable for reuse.

Equipment and process:

The dedicated program-controlled equipment used to test battery

 performance is called a capacity cabinet.

The capacity cabinet can perform charge and discharge tests on a large 

number of batteries at the same time, improving the test efficiency.

During the test, the battery will be fully charged according to the specification, 

and then discharged at the specified current until it is fully discharged. 

The time taken to discharge the battery multiplied by the discharge current is the capacity of the battery.

Importance:

Battery capacity grading is an important part of battery production and recycling, 

and is of great significance for ensuring the quality and performance of batteries.

Through capacity grading, qualified batteries can be screened out, the battery 

efficiency and life can be improved, and the losses and risks caused by poor 

battery performance can be reduced.

In summary, battery capacity grading is a method of evaluating battery capacity

 and performance through charge and discharge tests, which is of great significance 

for ensuring the quality and performance of batteries.

For any inquiries about battery pack assembly line solutions, please don't hesitate to contact us.