6 FAQs about Battery cabinet quality inspection

Is high-throughput CT scanning a good solution for battery QC?

While no single method offers a perfect solution, we believe high-throughput CT scanning stands out as an especially promising and impactful technique for battery QC. Glimpse is a Boston-based startup pioneering high-throughput CT scanning for battery quality control by solving CT scanning's two major bottlenecks: scan time and analysis time.

Why is battery quality so important?

Poor battery quality can lead to major safety and reliability issues in the field in applications including consumer electronics [1, 2], electric vehicles [3, 4], aviation, and more. However, detecting latent cell defects —which are responsible for these battery quality issues—during production is notoriously challenging.

What are the pros and cons of battery QC?

This technique is often combined with digital photography. While dissection is a standard procedure in battery QC, this method is (obviously) destructive as well as quite labor-intensive and slow. Pros: High-resolution, detailed views into internal cell structures. Cons: Destructive, labor-intensive, and slow (~hours).

What is a defect detection test for a battery?

OCV decay Perhaps the most standard defect detection test performed in battery manufacturing today is measuring the leakage current during rest after formation [7–9]. This technique can directly capture internal shorting—but not the latent defects that may cause internal shorting in the field.

Is CT scanning a 'holy grail' battery QC technique?

CT scanning is often considered to be the “holy grail” battery QC technique as it is capable of nondestructively detecting many cell defects related to geometric structure. While CT scanning is historically a slow technique (~hours), recent advances are driving scan times down to minutes or even seconds.

Can EIS be used in battery QC?

In EIS experiments, small perturbations are applied to measure an impedance spectrum. This impedance spectrum can be used to quantify the electrochemical health of a battery. EIS is not widely used in battery QC today. Pros: Nondestructive and provides unique insights into the electrochemical health of a battery.

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