On September 17, 2009, Underwriters Laboratories (UL) announced its intent to release a new set of requirements for large batteries in electric vehicles, UL Subject 2580. The new requirements are intended to help mitigate the potential risk of fire and electrical hazards and enhance the overall safety of batteries for electric vehicles. Before becoming a standard, these requirements will undergo a comprehensive review process by a global Standard Technical Panel (STP). A STP is a consensus body of individuals representing consumers, government agencies, regulatory authorities, manufacturers and other knowledgeable interested parties that develop and maintain effective product safety standards.
While UL Subject 2580 will not be mandated, manufacturers will have the option of certifying to its requirements to help reduce risks. Currently, there is no UL standard for the testing of large batteries like these in electric vehicles.
In addition to developing new standards for large batteries, UL has been conducting tests and certifying to existing standards for numerous hybrid and battery-electric vehicle components. Some of these components include motors, connectors and battery chargers. UL tests these components for overload protection, shock and flammability among other hazards. Ultimately, UL's requirements for electric vehicle safety help move the industry toward performance and safety standardization.
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