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Lithium Battery Definitionsin UN Manual of Tests and Criteria
George A. KerchnerPRBA – The Rechargeable Battery Association
1776 K Street, NWWashington, DC 20006
Definitions
Background• “Module” frequently used by industry; referenced in NOTE under
“Battery” definition in UN Manual Generally recognized as electrically connected cells and a
“component” designed for use in battery assembly
• “Battery Assembly” referenced eight times in 38.3.3 but not defined Generally recognized as assembly of electrically connected
modules or batteries “Battery System” more frequently used in industry
SAE 2984 Definitions
Battery Module: A group of interconnected cells in a single mechanical and electrical unit
Battery System: A completely functional energy storage system consisting of the pack(s), necessary ancillary subsystems for physical support, thermal management and electronic control.
UL 2580 Definitions
Module – A subassembly consisting of a group of cells or electrochemical capacitors connected together either in a series and/or parallel configuration (sometimes referred to as a block) with or without protective devices and monitoring circuitry. A module is a component of an electric energy storage assembly.
Proposed Definitions
Module or Component Module is two or more cells that are electrically connected in a single mechanical and electrical unit and designed for use in a battery system. It may include housing, terminals, electronic circuits, protective devices and markings.
Proposed Definitions
Replace Battery Assembly with Battery System in UN Manual
Define Battery System as a completely functional energy storage system consisting of two or more modules or batteries and necessary ancillary subsystems for physical support, thermal management, protection management and electronic control.
Definitions
Large battery defined as battery with a gross mass of more than 12 kg
– Generally associated with industrial-type batteries (e.g., EV, HEV)
Largest consumer-type Li ion battery found in E-bikes weighs approximately 3.0 – 5.0 kg
Proposed changes would better differentiate between consumer-type and industrial-type lithium batteries
Proposed Definitions
Large battery means a lithium metal battery or lithium ion battery with a gross mass of more than 5 kg.
Small battery means a lithium metal battery or lithium ion battery with a gross mass of not more than 5 kg.
