IEC Battery Technical Committee TC 21/SC 21A published the second edition of IEC 62619:2022 on May 24, 2022. Compared with the previous version, the following major technical changes are involved:
added requirements for moving parts;
additional requirements for hazardous live parts;
additional battery system design requirements;
added system lock requirements;
added EMC requirements;
additional laser triggers the spread process.
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1. Cell preparation test
1) fully charge the cell according to the method specified by the manufacturer
2) Place a thermocouple on the surface of the cell
3) Fixed cell
4) Determine the laser irradiation plan
5) Prepare equipment such as cell temperature measurement
6) Set the ambient temperature to 25 ℃ ± 5 ℃
7) Irradiate the battery with laser at the determined point and measure the cell temperature until the end of the observation
8) Turn off the laser when a rapid temperature rise due to thermal runaway of the cell is observed
9) Continuously observe the temperature and appearance of the battery until the temperature drops to the safe operating range
10) View the temperature profile to confirm thermal runaway
11) The battery cell prediction should be repeated 3 times. If the thermal runaway is confirmed in each test under the same conditions, the battery system spread test should be performed under the same irradiation conditions
2. Battery system test
1) Full charge the battery system according to the manufacturer's recommend conditions
2) Place thermocouple on the cell surface
3) Fix the battery system on the test bench, and the irradiation point on the target cell should be the same or similar to the preparatory test
4) Prepare and set up equipment for battery system temperature test
5) Determine the laser irradiation plan
6) Set the ambient temperature to 25 ℃ ± 5 ℃
7) irradiate the target cell with laser at the determined point and continuously measure the temperature of the monitored cell
8) When a rapid rise in temperature due to thermal runaway of the cell is observed, turn off the laser
9) Observe the measured cell temperature and battery system appearance for at least 1 hour
The above is the introduction of AJE testing and certification to the energy storage battery standard IEC 62619:2022 new version requirements and contents. It is for reference only. Some materials come from the Internet and do not represent the views of AJE testing technology and are responsible for its authenticity. If you are involved in the content of the work, copyright and other issues, please contact us within 30 days, we will delete the content in the first time!
