1 Scope
This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of sealed nickel-metal hydride batteries for electric road vehicles (including electric cars, electric motorcycles, etc.) (hereinafter referred to as batteries).
This standard is applicable to sealed nickel-metal hydride batteries for electric road vehicles with rated voltage of 12V.
2 Normative References
The following document contains provisions which, through reference into this standard, constitute provisions of this standard. At time of publication, the editions indicated were valid. All the standards will be revised; all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of the following standards are applicable.
GB/T 2900.11-1988 Terminology of (Secondary) Cell or Battery (eqv IEC 486:1986)
3 Definitions and Symbols
Besides the definitions in GB/T 2900.11, the following definitions are added in this standard.
3.1 Sealed cell
Where the battery is maintained at sealing state while working within the specified design scope but the internal pressure exceeds the predetermined value, the gas is allowed to be escaped through a resettable or non-resettable pressure-relief device.
3.2 Symbols
C3 - the rated capacity every 3 hours.
I3 - the discharge current every 3 hours, with its value equals to 1/3C3 (A).
ΔV - the voltage drop of battery dropping to V2 within specified time after reaching the maximum value V1 where charged with certain current, namely ΔV=V2-V1.
Foreword I
1 Scope
2 Normative References
3 Definitions and Symbols
4 Classification and Designation
5 Requirements
6 Test Methods
7 Inspection Rules
8 Marking, Packaging, Transportation and Storage
Appendix A (Informative) Overall Dimension and Weight of Battery
