DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
12 V sodium-ion secondary batteries for start-stop and auxiliary application - Part 1: general requirements and methods of test
Abstract
This proposal is applicable to sodium-ion batteries with a nominal voltage of 12 V, used in passenger cars, commercial and industrial vehicles as a power and energy storage with one or more functions such as: 1) starting an internal combustion engine (ICE) 2) in vehicles with start-stop (or stop-start, idling-stop or idle-stop-and-go) system, supply the electric 12V system of the vehicle while the engine is automatically switched off and alternator is not operated, and re-start the engine 3) in vehicles with 12V regenerative (or recuperative) braking function, absorb maximum alternator power while the ICE powertrain deems to prioritize 12V electric generation, and contribute to support electric loads in other periods of a trip (saving fuel and reducing CO2 emissions then) 4) stabilize the 12V system voltage by absorbing or delivering peak power in conditions of rapid change in load demand, 12V generation, or system malfunctions 5) supply energy to 12V electrical loads (including safety relevant loads or autonomous driving features) in situations when the primary 12V electric source is not active (examples: parking, vehicle activation, after-run, failure of DC-DC) or not matching electric consumption (example: alternator fully utilized). Functions 1) - 3) are restricted to vehicles with internal combustion engine, whereas functions 4) and 5) apply to vehicles with all levels of high-volt or 48V powertrain electrification as well. This proposal does not apply to batteries that provide propulsion for electric vehicles (BEVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (PHEVs). This document specifies the: - general requirements - terms, definitions, symbols, parameter measurement tolerances, marking and designation requirements - Test methods and requirements for: capacity, discharge performances at low-temperature, charge performances at low-temperature, charge retention, endurance and other electrical performances
Begin
2026-01-22
Planned document number
DIN EN IEC 63711-1
Project number
02233602
Responsible national committee
DKE/UK 371.2 - Akkumulatoren (Elektrochemische Systeme außer Lithium)
