Method of analyzing the quality of a battery cell by performing a comprehensive quality check on battery cells assessed as low-quality from a high-throughput quality check

Patent metadata

Field	Value
Publication number	US-11668759-B2
Application number	US-202117350681-A
Country	US
Kind code	B2
Filing date	Jun 17, 2021
Priority date	Jun 17, 2021
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

A method of analyzing the quality of a battery cell includes performing a high-throughput quality check on the battery cell with a quality control system, assessing a quality score to the battery cell, with quality score identifying the battery cell as low-quality or high-quality, and performing a comprehensive quality check on the battery cell if identified as low-quality. The method further includes assessing an enhanced quality score to the battery cell superseding the quality score of the quality control system identifying the battery cell as confirmed low-quality or confirmed high-quality and providing revised production instructions for manufacturing successive battery cells if confirmed low-quality.

First claim

What is claimed is:

1. A method of analyzing a quality of a battery cell, the method comprising:
performing a first high-throughput quality check on the battery cell with a quality control system, wherein the first high-throughput quality check is selected from the group consisting of analyzing a cell formation charge data of the battery cell, analyzing a volume of a gas within a gas pouch of the battery cell, analyzing a composition of the gas within the gas pouch, and analyzing a battery cell discharge check data;
assessing a first quality score to the battery cell identifying the battery cell as low-quality or high-quality, wherein the first quality score is related to an estimated charge quantity of the battery cell based on the first high-throughput quality check;
performing a comprehensive quality check on the battery cell when identified as low-quality by the first quality score, wherein the comprehensive quality check is selected from the group consisting of performing gas chromatography on the gas within the gas pouch of the battery cell identified as low-quality and performing accelerated cycle testing (ACT) through aging and repeated charge and discharge cycling of the battery cell identified as low-quality;
assessing an enhanced quality score to the battery cell based on the comprehensive quality check, with the enhanced quality score identifying the battery cell as low-quality or high-quality and the enhanced quality score representing a more accurate estimated charge quantity of the battery cell than the first quality score, wherein the enhanced quality score supersedes the first quality score; and
providing revised production instructions for manufacturing successive battery cells when the enhanced quality score identifies the battery cell as low-quality.

2. The method of claim 1 , further comprising: performing a second high-throughput quality check on the battery cell with a second quality control system, wherein the second quality control system is selected from the group consisting of analyzing the cell formation charge data of the battery cell, analyzing the volume of gas within the gas pouch of the battery cell, analyzing the composition of the gas within the gas pouch, and analyzing the battery cell discharge check data that was not performed by the first quality control system, and wherein the second quality control system is different than the first quality control system; and assessing a second quality score to the battery cell, with second quality score identifying the battery cell as low-quality or high-quality, wherein the second quality score is related to an estimated charge quantity of the battery cell based on the second high-throughput quality check.

3. The method of claim 2 further comprising averaging the first quality score and the second quality score to generate a global quality score, wherein the global quality score identifies the battery cell as low-quality or high-quality, the global quality score representing a more accurate estimated charge quantity of the battery cell than the first quality score and the second quality score individually.

4. The method of claim 3 wherein the enhanced quality score is assessed when the global quality score identifies the battery cell as low-quality, the enhanced quality score represents a more accurate estimated charge quantity of the battery cell than the global quality score, wherein the enhanced quality score supersedes the global quality score.

5. The method of claim 3 wherein performing the first high-throughput quality check on the battery cell with a first quality control system is further defined as analyzing the cell formation charge data of the battery cell and wherein performing the second high-throughput quality check on the battery cell with the second quality control system is further defined as analyzing the composition of the gas within the gas pouch, wherein analyzing the cell formation charge data of the battery cell occurs prior to analyzing the composition of the gas within the gas pouch.

6. The method of claim 3 wherein performing the first high-throughput quality check on the battery cell with a first quality control system is further defined as analyzing the cell formation charge data of the battery cell and wherein performing the second high-throughput quality check on the battery cell with the second quality control system is further defined as analyzing the volume of gas within the gas pouch of the battery cell, wherein analyzing the cell formation charge data of the battery cell occurs prior to analyzing the volume of gas within the gas pouch of the battery cell.

7. The method of claim 3 wherein performing the first high-throughput quality check on the battery cell with a first quality control system is further defined as analyzing the cell formation charge data of the battery cell and wherein performing the second high-throughput quality check on the battery cell with the second quality control system is further defined as analyzing the battery cell discharge check data, wherein analyzing the cell formation charge data of the battery cell occurs prior to analyzing the battery cell discharge check data.

8. The method of claim 1 wherein providing revised production instructions for manufacturing successive battery cells if confirmed low-quality is further defined as providing instructions for adaptive formation charge parameters.

9. The method of claim 1 further comprising reintroducing the battery cell into production if the battery cell is confirmed high-quality.

10. The method of claim 1 further comprising scrapping the battery cell if the battery cell is confirmed low-quality.

11. A method of analyzing a quality of a battery cell, the method comprising:
performing a first high-throughput quality check on the battery cell with a first quality control system, wherein the first high-throughput quality check is selected from the group consisting of analyzing a cell formation charge data of the battery cell, analyzing a volume of a gas within a gas pouch of the battery cell, analyzing a composition of the gas within the gas pouch, and analyzing a battery cell discharge check data;
assessing a first quality score to the battery cell identifying the battery cell as low-quality or high-quality, wherein the first quality score is related to an estimated charge quantity of the battery cell based on the first high-throughput quality check;
performing a second high-throughput quality check on the battery cell with a second quality control system, wherein the second quality control system is selected from the group consisting of analyzing the cell formation charge data of the battery cell, analyzing the volume of gas within the gas pouch of the battery cell, analyzing the composition of the gas within the gas pouch, and analyzing the battery cell discharge check data that was not performed by the first quality control system, and wherein the second quality control system is different than the first quality control system;
assessing a second quality score to the battery cell, with the second quality score identifying the battery cell as low-quality or high-quality, wherein the second quality score is related to an estimated charge quantity of the battery cell based on the second high-throughput quality check;
averaging the first and second quality scores to generate a global quality score identifying the battery cell as low-quality or high-quality;
performing a comprehensive quality check on the battery cell when the global quality score is low-quality, wherein the comprehensive quality check is selected from the group consisting of performing gas chromatography on the gas within the gas pouch of the battery

Assignees

• Gm Global Tech Operations Llc

Inventors

• Salvador James R
• Chakraborty Debejyo
• Sekol Ryan Curtis
• Yersak Thomas A
• Wagner Sean R
• Wampler Charles W
• Lesperance Ronald M
• Ardanese Raffaello
• Dao Thanh-Son
• Bruder Dmitriy

Classifications

• G01N33/0027 Primary

  concerning the detector · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/4285

  Testing apparatus · CPC title

• G01N30/02

  Column chromatography · CPC title

• G01R31/382

  Arrangements for monitoring battery or accumulator variables, e.g. SoC · CPC title