Lithium-ion battery automatic detection and fractionation ca

Lithium-ion battery automatic detection and fractionation cabinet

The lithium-ion battery automatic detection and fractionation cabinet is a key equipment in the battery production process. The following is a detailed introduction about it:

Working principle:

Detection link: Use precise sensors to detect key parameters such as battery voltage, internal resistance, capacity, etc. in real time to obtain basic performance information of the battery and ensure the accuracy and reliability of the data.

Formation treatment: Implement a series of process measures on the first charged battery to stabilize its performance. In this process, operations such as small current charging and discharging, constant temperature static, etc. will cause a passivation film (SEI film) to form on the surface of the battery electrode. This film has a vital impact on the electrochemical properties such as battery cycle life, stability, self-discharge, and safety.

Capacity fractionation link: Automatically classify and store the battery according to its capacity level. The equipment will obtain the data of each detection point through computer management according to the preset specifications, analyze the battery capacity and internal resistance data, and determine the quality level of the battery.

Main functional features:

High degree of automation: It can realize automatic detection, formation and fractionation of lithium-ion batteries, greatly reducing manual operation links, improving production efficiency and reducing production costs.

High-precision detection: Accurately measure various parameters of the battery. The measurement accuracy of current and voltage is relatively high, generally reaching about one thousandth. The accuracy of current and voltage sensors of some high-precision equipment can be more than one ten-thousandth, ensuring the consistency and stability of battery performance.

Independent channel control: Each channel can perform independent battery performance tests on a group of finished batteries. Each channel is completely independent and does not interfere with or affect each other. Even if individual channels do not work properly, it will not affect the normal operation of other channels.

Data recording and analysis: It can record key data such as battery voltage, current, time, capacity, etc. in real time, and provide a variety of curve modes for data analysis. These data provide strong support for production management and process optimization.

Flexible process step settings: Multiple process step parameters and cycles can be set, and small current charge and discharge cycles can be performed first and then large current charge and discharge cycles, or vice versa. Batteries can also be comprehensively sorted according to different parameters.

Power-off protection and continuation: It has intelligent power-off protection function, and the power is automatically continued after the call is received, without losing data.

Application advantages:

Improve battery quality: Through precise testing and formation treatment, the consistency and stability of battery performance can be ensured, and the battery quality qualification rate can be improved.

Adapt to market demand: The battery capacity specifications can be quickly adjusted according to market demand to meet the needs of battery performance in different fields, providing enterprises with greater market competitiveness.

Green and energy-saving: Environmentally friendly materials and processes are used to reduce energy consumption and emissions, which is in line with the current trend of increasing environmental awareness.

Classification:

By application scenario:

Production: Suitable for mass production, divided into two types: cylindrical, aluminum shell and polymer, with different fixtures. The cylinder and the aluminum shell are contacted by upper and lower needles, while the polymer uses a gold-plated flat fixture to clamp the pole ear for charging and discharging.

Testing: Each point is completely separated and can work independently, with large current, but most of the machines can only control a small number of test points, mainly used for research and testing of battery performance in scientific research units.

By the number of channels: There are devices with different numbers of channels to choose from, such as the common 512 channels, 256 channels, etc. The more channels there are, the more batteries can be tested and capacity-separated at one time, and the production efficiency will be higher, but the cost and complexity of the equipment will also increase accordingly.