LFP LiFePo4 Lithium prismatic battery sorting equipment is a key device in the lithium battery production process. It is used to test and sort various performance parameters of LFP LiFePo4 lithium prismatic batteries to ensure their quality and consistency. The following is an introduction from the perspectives of its functions, working principles, structural composition, and main technical parameters:

Functions

Parameter Testing: It can simultaneously measure parameters such as voltage and internal resistance of LFP LiFePo4 lithium prismatic battery cells. Some devices can also be optionally equipped with a cell dynamic tester, which simulates the voltage drop and temperature rise curves of the cell under load conditions to accurately evaluate the power performance and thermal stability of the cell.

Precise Grading: It supports users to customize grading rules according to process requirements. For example, cells can be divided into different grades according to voltage ranges or internal resistance intervals. After grading, the cells are automatically shunted to corresponding channels through robotic arms or conveyor belts.

Data Recording and Tracing: Test data such as voltage, internal resistance, grading results, and time stamps can generate Excel files by batch, which can be exported to the MES system or local computer with one click via a USB flash drive, facilitating subsequent module pairing and echelon utilization analysis.

Working Principle

The equipment collects key parameters such as the open - circuit voltage and internal resistance of the cell in real - time through high - precision sensors, compares these data with preset sorting standards, and automatically assigns the cell to the corresponding grade according to the comparison results to achieve precise sorting.

Structural Composition

Feeding Mechanism: It usually includes devices such as a hopper and a conveyor belt, which are used to transport square batteries to the testing station one by one. For example, the HW-BT-FX11 prismatic cell automatic sorting machine is equipped with a special loading box. The operator can complete the loading by placing the loading box in the designated area.

Testing Mechanism

Voltage and Internal Resistance Testing System: It adopts high - precision four - wire testing technology or professional internal resistance meters, voltmeters, etc., and can measure the voltage and internal resistance of square batteries at the same time. For example, the equipment of Shenzhen haiwei laser technology adopts high - precision four - wire testing technology, which can ensure that the test data highly match the actual performance of the cell.

Scanning Mechanism: It generally uses a code scanner, which can automatically focus and support bar codes and QR codes. It is used to record the identity information of the battery to realize data tracing.

Sorting Mechanism: It includes a manipulator mechanism, XY - axis lead screws, and a sorting belt line. After the test is completed, the manipulator grabs the battery, and the XY - axis lead screws accurately place the battery into each grade, and then it is transported out along the sorting belt line.

Control System: It is composed of a PLC (Programmable Logic Controller), a PC industrial computer, etc. Users set relevant parameters through software, and the equipment can automatically complete the whole process from cell feeding to testing, sorting, data recording and saving.

Main Technical Parameters

Voltage Testing Accuracy: It can generally reach ±0.1mV or higher. For example, the voltage testing accuracy of Shenzhen haiwei laser technology co.,ltd's LFP LiFePo4 lithium prismatic cell automatic sorting machine can reach ±0.1mV.

Internal Resistance Testing Accuracy: It can usually reach about ±0.01mΩ, and some high - precision equipment can be higher.

Sorting Efficiency: The sorting efficiency of different equipment varies, generally around 8 - 300 PPM (pieces per minute).

Equipment Advantages

Improving Production Efficiency: The whole process is automated without manual intervention, which can work continuously and stably, greatly improving the efficiency of battery sorting and reducing labor costs.

Enhancing Battery Quality: Through accurate parameter testing and intelligent grading, batteries with consistent performance can be sorted into the same batch, improving the consistency of the battery pack, and thus enhancing the overall quality and performance of the battery.

Reducing Production Costs: It reduces errors and waste in manual sorting, lowers the rework rate of modules caused by inconsistent battery performance, and indirectly reduces production costs.

Representative Products

Shenzhen Haiwei Laser Technology LFP LiFePo4 Lithium Prismatic Battery Cell Automatic Sorting Machine: It integrates functions such as voltage and internal resistance testing, intelligent grading, and data tracing. It adopts high - precision four - wire testing technology, can measure the voltage and internal resistance of square aluminum - shell cells at the same time, supports custom grading rules, and the grading efficiency can reach 200 - 300 PPM.

Haiwei HW-CAC-FXR10D - QR - TM prismatic Cell 10 - grade / channels OCV Automatic Sorting Machine: It integrates excellent measurement and control technology, precise mechanical structure, and intelligent operating system, can realize rapid and accurate sorting of cells, supports 10 - grade OCV sorting, and meets the sorting needs of cells with different specifications and performances.