Multi-station rotary battery electrochemical impedance automatic testing device

By designing a multi-station rotary automated battery electrochemical AC impedance testing device, using a controller to drive the rotation and lifting mechanism, and combining it with a pressure sensor, the problems of inconsistent test results and low efficiency in existing technologies are solved, achieving automation and high efficiency consistency in battery electrochemical AC impedance testing.

CN224436549UActive Publication Date: 2026-06-30TIANMU LAKE INST OF ADVANCED ENERGY STORAGE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANMU LAKE INST OF ADVANCED ENERGY STORAGE TECH CO LTD
Filing Date
2025-06-10
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, the electrochemical AC impedance testing of coin cells suffers from problems such as inconsistent test results, excessive manual intervention, low efficiency, and significant influence from ohmic impedance, making automated testing impossible.

Method used

A multi-station rotary battery electrochemical AC impedance automated testing device is designed. It uses a controller to drive the rotation mechanism and lifting mechanism, combined with a pressure sensor, to achieve precise control of the upper and lower metal clamps and synchronous rotation of the placement slot. It is suitable for mass battery testing, reduces manual intervention, and improves testing efficiency and consistency.

Benefits of technology

It automates electrochemical impedance spectroscopy testing, improves testing efficiency and consistency, reduces manual intervention, is applicable to testing various battery types, and is compatible with batteries of different sizes.

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Abstract

This invention discloses a multi-station rotary automated battery electrochemical impedance spectroscopy (EIS) testing device, comprising a controller and a rotating mechanism and a lifting mechanism respectively connected by signals. The lifting mechanism drives the upper metal clamp to move up and down, allowing the upper and lower metal clamps to clamp or release the test object, forming a circuit when the test object is clamped. The rotating mechanism drives a placement rack to rotate at a set angle. The placement rack has several evenly distributed slots for placing the test object, located between the upper and lower metal clamps. The upper and lower metal clamps are also connected to an electrochemical workstation via two wiring harnesses. This invention achieves precise speed and position control in each EIS test, automating the electrochemical impedance spectroscopy test and improving work efficiency.
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