Summary of Standard Revision:

In July 2021, the UN Economic Commission for Europe (UNECE) has released the official 03 Series of Amendment of R100 Regulations (EC ER100.03) concerning electric vehicle battery. The Amendment was entered into force from the published date.

Amended contents:

1、Amendment of high voltage safety requirements for vehicles:

Addition of new requirement for waterproof protection;

Addition of new requirement for warning in the event of failure in REESS and Low energy content of REESS

2. Amendment of REESS.

Revision of test qualification conditions: new requirement of “no gas emission” is added (applicable to except)

SOC Adjustment of tested samples: The SOC is required to be charged from previously not less than 50%, to not less than 95%, in vibration, mechanical impact, crush, fire burn, short circuit, and thermal shock cycle tests;

Revision of current in overcharge protection test: revision from 1/3C to the maximum charge current that REESS allows.

Addition of the overcurrent test.

Requirements are added in respect of REESS low temperature protection, management of gas emission from REESS, warning in the event of operational failure of vehicle controls that manage REESS safe operation, warning in the thermal event within the REESS, heat conduction protection, and alarm policy document.

Implementation of Standards:

The standard has entered into force from the effective date to September 1, 2023. ECE R100 .02 amendment document and ECE R100.03 document are effective in parallel.