On June 25, 2021, UL official website released the latest amendment proposal to the UL2054 standard. The solicitation of opinions lasts until July 19, 2021. The followings are the 6 amendment items in this proposal:
Influence of the proposal on battery design:
The Article 4 of the proposal may have most impact on the battery design: once modification suggestion on the fault of protection components and circuits is adopted, when protection is carried out through two identical circuits or components, another protection device needs to be added because the original ones need to be faulted. For example, in the overcharge test, if two same MOSFETs used for overcharge protection need to be faulted without any other overcharge protection designs working, the battery loses the overcharge protection and the test is impossible passed.
In summary, it is recommended that manufacturers adopt two different protection methods when designing battery to deal with possible subsequent changes.
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