SDS

5.6.2.2 standard charge, put aside 30 min, 1 to 3.000 V, c5a discharge aside 30 min, repeat the above steps for circulation,
until the battery discharge capacity 3 consecutive 80% or less 3 weeks discharge capacity, to test the temperature of 25 +
2 ℃ (important parameters affecting cell cycle performance), requirements are as follows:
Cycling times ≥100
5.6.3 charged maintenance ability
project
The test method
request
Room
temperature
storage
1
After standard charge, the battery in the environment of
the 25 + 2 ℃ storage for 30 days, test 0.2 C5A discharge
capacity (keep capacity)
Capacity to keep≥88% C
5
2
After the discharge, charge standard, 0.2 C5A constant
exile electric loop 3 times, test recovery capacity maximum
discharge capacity (3 weeks)
Capacity to restore≥94% C
5
High
temperature
storage
1
After standard charge batteries in the environment of the
60 + 2 ℃ storage, 7 days test 0.2 C5A discharge capacity
(keep capacity)
Capacity to keep≥70% C
5
2
After the discharge, charge standard, 0.2 C5A constant
exile electric loop 3 times, test recovery capacity maximum
discharge capacity (3 weeks)
Capacity to restore≥85% C
5
5.6.4 long-term storage performance
Battery should choose the production dates to the experiment date less than 3 months of battery, storage battery before
filling the 50% of capacity, and then open the way for 365 days, under the condition of 25 + 2 ℃ environment 0.2 C5A
cycle three times, test recovery capacity maximum discharge capacity (3 weeks), requirements are as follows:
Restores≥85%
5.7 mechanical properties
project
The test method
request
vibration
Standard charge, install the battery on the vibration table, in
the X, Y, Z three experiment of vertical direction vibration
frequency between 10 ~ 55 hz to 1 hz/min speed change,
reciprocating vibration for 30 min.
Vibration frequency: 10 ~ 30 Hz displacement amplitude:
0.38 mm
Vibration frequency: 30 to 55 Hz displacement amplitude:
0.19 mm
Battery appearance has no
obvious damage, leakage,
smoking or explosion, the
battery voltage≥4.0V
Free fall
After the vibration test battery free drop test according to the
following conditions:
Drop height: 1.2 m;
To undertake: 18 ~ 20 mm thick hard wood;
Drop direction: positive and negative along the horizontal
direction each drop at a time.
Battery appearance has no
obvious damage, leakage,
smoking or explosion