1 Scope
This part of GB/T 19639 specifies technical requirements, test methods, inspection rules, marking, packing, transportation and storage of small-sized valve-regulated lead-acid battery (hereinafter referred to as "battery").
This part is applicable to batteries used for emergency lighting equipment, uninterrupted power supply, movable measuring equipment etc. as well as all kinds of DC power supplies with a rated capacity of below 65 Ah (including). The battery cell of this type of lead-acid battery may be that in the square slot by panel electrode or in the circular cylinder by winding electrode. Sulfuric acid electrolyte in the battery is stagnant or adsorbed in the micropore structure between the electrodes or in the gel form.
2 Normative References
The following normative documents contain provisions which, through reference in this part, constitute provisions of this part. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
GB/T 19639.2 Product Classification of Small-sized Valve-regulated Lead-acid Batteries
QB 700 Graduated Cylinder
QB 702 Burette
JB/T 9461-1999 Specifications for the Moving Cistern Mercury Barometer
3 Terms and Symbols
The following symbols are applicable to this part.
C20——20h nominal capacity, Ah;
I20——20h discharge current, value C20/20, A;
Ce——20h actual capacity, Ah;
R——Battery capacity preservation rate, %.
4 Technical Requirements
4.1 Appearance
Battery shall be free from any deformation and cracks for its appearance and marked clearly.
4.2 Dimension
Battery's overall dimension shall meet the requirements of GB/T 19639.2.
4.3 20h nominal capacity
4.3.1 20h nominal capacity C20 shall meet the requirements of GB/T 19639.2.
4.3.2 Actual capacity Ce of the battery shall not be less than C20 within the fifth charge-discharge cycle during the test according to 5.5.
4.4 7min discharge
Discharge period of battery shall not be less than 7 min during the test according to 5.6 after being fully charged.
4.5 27min discharge
Discharge period of battery shall not be less than 27 min during the test according to 5.7.
4.6 Maximum discharge current
Conductive position of battery shall not be dissolved and its appearance shall be free from abnormal phenomena during test according to 5.8.
4.7 Overdischarge
Actual capacity of battery shall not be less than 0.75C20 during the test according to 5.9.
4.8 Overcharge
Actual capacity of battery shall not be less than 0.95C20 and appearance shall be free from abnormality during the test according to 5.10.
4.9 Gas emission or reaction efficiency
The test may be subjected to according to any one of the two methods below.
a) Average emission amount Ge of the gas emitted externally from a cell of the battery per Ah/hour under standard condition Ge ≤0.05 mL/(Ah•h) during the test according to 5.11.1~5.11.4.
b) Reaction efficiency of battery shall not be less than 90% during the test according to 5.11.5~5.11.7.
4.10 Exhaust valve
Exhaust valve of the battery shall be switched reliably within the scope of 1~49kPa pressure during the test according to 5.12. 4.11 Safety
Appearance of battery shall be free from abnormal phenomena as leakage during the test according to 5.13.
4.12 Flame resistance
Battery internal shall not be exploded if its external encounters open fire during the test according to 5.14.
4.13 Charge preservation
Capacity preservation rate of battery shall not be less than 75%Ce during the test according to 5.15.
4.14 Vibration resistance
Terminal voltage of battery shall not be less than nominal voltage and its appearance shall be free from abnormal phenomena like leakage during the test according to 5.16.
4.15 Impact resistance
Terminal voltage of battery shall not be less than nominal voltage and its appearance shall be free from abnormal phenomena like leakage during the test according to 5.17.
4.16 Service life
The test may be subjected to according to any one of the two methods below.
4.16.1 Charge-discharge cycle life
Charge-discharge cycle life of battery shall not be less than 300 during the test according to 5.18.2.
4.16.2 Trickle charge service life
Trickle charge service life of battery shall not be less than two years during the test according to 5.18.3.
Foreword I
1 Scope
2 Normative References
3 Terms and Symbols
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Marking, Packing, Transportation and Storage
