ProfileLi-ion Polymer BatteryElectrical & Mechanical Test Methods
  ELECTRICAL & MECHANICAL TEST METHODS
  Li-ion POLYMER BATTERY
        Specification tables
1.Electrical Safety Tests
        Overview
Items
Condition
Test Method
Specification
Result
Short Circuit at 25 celsius Fully
charged 		Connecting the positive and negative terminals of the battery with copper wire having a maximum resistance load of 0.1 ohm. No explosion or no fire; and the temperature of the battery shall not exceed 150 celsius Pass
Short Circuit at 60celsius Fully
charged 		Tests are to be conducted at room temperature and at 58-62celsius No explosion or no fire; and the temperature of the battery shall not exceed 150 celsius Pass
Abnormal Charging Fully discharged Cell is initially charged at 3C(0.6C) rate by connecting to a 12V DC-power supply for 48 hours. No explosion or no fire; and the temperature of the battery shall not exceed 150celsius Pass
Over-charging Fully discharged The battery is charged at 1CmA to 250% of its rated capacity. No explosion, no fire, no leakage, or no venting Pass
        Features
        Comparisons between LIP and
          0ther  secondary batteries
        Major applications
        Structural designs
        Electrochemical processes
        Characteristics of Li-ion batteries
        Electrical & mechanical test
          methods
        Precautions for using Li-ion
          batteries 
 
 
 
 
 
 
 
  2.Mechanical Safety Tests 
 
Items
Condition
Test Method
Specification
Result
Vibration Fully charged Cell is under vibrations of amplitude 0.8 mm, frequency between 10 and 55 Hz., swept at 1Hz./min. for 90min orthogonally in XYZ directions. No explosion, no fire, no leakage, or no venting Pass
Shock Fully charged Cell is accelerated during the initial 3 msec. with the minimum average acceleration of 75 G, and the peak acceleration between 125 G and 175 G, in XYZ directions. No explosion, no fire, no leakage, or no venting Pass
Crush test Fully charged Cell is placed between two parallel flat steel plates and the electrodes are parallel to the plates, a force of 13 kN is applied No explosion or no fire Pass
Impact test Fully charged A round rod of 15.8 mm diameter is placed near the center of the cell, parallel to the electrodes and perpendicular to the upper terminal of the cell, and a 9.1 kg weight is dropped from a height of 61 cm to the rod. No explosion or no fire Pass
Drop test Fully charged Battery is dropped in a free-fall manner for ten times from a height of 1.9m onto a concrete floor, with arbitrary orientation. No rupture or ignition  
3.Environmental Safety Tests
 
Items
Condition
Test Method
Specification
Result
Heating Test Fully charged The temperature of the oven is to be raised at a rate of (3-7celsius)/min. to a temperature of 148-152celsius and remain for 10 minutes at this temperature. No explosion or no fire. Pass
Temperature Cycling Fully charged (1)Raise the temperature from 25 to 70celsius within 30 min, and then maintain the temperature for 4 hrs.
(2)Reduce the temperature from 70 to 25celsius within 30 min, and then maintain the temperature for 2 hrs.
(3)Reduce the temperature from 25 to -40celsius within 30 min, and then maintain the temperature for 4 hrs.
(4)Raise the temperature from -40 to 25celsiuswithin 30 min, and then maintain the temperature for 2 hrs.
(5)Repeat the sequence for further 9 cycles.
(6)After 10 cycles, store the cell for 7 days prior to examination.		 No explosion, no fire, no leakage, or no venting. Pass
Altitude Simulation Fully charged Cell is left for 6 hours in an environment with an atmospheric pressure of 11.6 kPa. No explosion, fire, leakage, or venting. Pass
High Humidity Storage Performance Fresh cell After full charge, store at 60celsius and 90%RH for 30 days. No gassing and no leakage Pass
High Temperature Storage Performance Fresh cell (1)After full charge, store at 85celsius for 48 hours.
(2)After full charge, store at 90celsius for 4 hours. 		No gassing and no leakage  swelling less than 2%