Lithium Battery Industry Pain Points

Battery Manufacturers

Q1: The larger the battery capacity, the smaller the internal resistance. Traditional electrochemical workstations cannot perform effective testing and they are expensive if used with current amplifiers.

Q2: Diferent batteries can't be distinguished by OCV or 1000Hz AClR alone. How can the batteries be sorted more finely?

Q3: lf there is an abnormality in the battery, how can we quickly locate the production problem? is it a poor welding? Or a poor formation? Or is it a material failure?

Battery Use & Recycling Companies

Q1: How to judge the consistency of the battery before assembling the battery module? Relying solely on OCV or 1000Hz ACIR is no longer sufficient.

Q2: Are there diferences between the same type of batteries purchased from different manufacturers? Can they be mixed?

Q3: For recycled or disassembled batteries, what is the remaining SOH (State of Health), and how can they be utilized in echelon applications?

IEST Battery Impedance Tester BIT6000 -1

Innovative Solutions of IEST

  • Electrochemical Impedance Spectroscopy (EIS) is a method that treats a battery cell as a "black box," applies voltage or current perturbations at varying frequencies, collects the corresponding response signals, and characterizes the impedance magnitudes of electrochemical processes with different time constants.

 

  • Introducing EIS testing before battery shipment or upon incoming material inspection, and comparing impedance variations between cells, enables:
    1) Screening cell consistency.
    2) Identifying abnormal cells.
    3) Assisting in analyzing cell failure mechanisms!
IEST Battery Impedance Tester BIT6000 -5
IEST Battery Impedance Tester BIT6000 -3

BIT6000 Introduction

Functions & Features:

  • Wide range of applicable cells, ranging from 1Ah to 500Ah
  • Fast EIS frequency sweep testing, with a frequency rangeof 1500Hz~0.1Hz;
  • Equipped with OCV testing, DCR testing, constant current charge-discharge testing, etc.
  • Battery Consistency Screening.
  • Dynamic fitting screening algorithm for batch screening.
IEST Battery Impedance Tester-2

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