SAE J2464 Test Standard Should Be Perform (EV Electric Vehicle Battery)
Electric and Hyrid Electric Vehicle Rechargeable Energy Storage System (RESS) Safety and Abuse Testing.
a) Immersion Test (Module or Pack Level)
Test Description
With the DUT in its normal operating orientation and at full state of charge, immerse the DUT in ambient temperature salt water (5% by weight NaCI in2 H) for minimum of 2 h or untill any visible reactions have stopped. the water depth must be enough to cmpletely submerge the DUT. The DUT may be placed into a tank filled with water or may be placed in a empty tank and water pumped into the tank to fully submerge the DUT.
Measured Data
The following data shall be collected as part of this test :
1. The temperature of the DUT to be recorded as function of time (temperature)
2. Voltage and resistance of the DUT to be recorded as a function of time (voltage and Resistance)
3.Video monitoring for the duration of the test, including the observation after the test as well as photographs of the setup and the DUT, before and after the test, including the post-test observation period. (PHOTOGRAPHS and VIDEO)
4.Gas analysis to measure potential gases produced by electrolysis of salt water (e.g Hydrogen or chlorine gas)
b) Thermal Shock Cycling (Cell Level or Above)
Test Description
With the DUT at the maximum operating state of charge, contained in a closed volume and active thermal controls ( primary and secondary) disabled, thermally cycle the DUT with ambient air cycling between 70'c to -40'c. The time for the chamber ambient temperature to reach each temperature extreme shall be 15 min or less, this test may be performed either through the use of a fast-response chamber or by moving test articles between two chambers at the two test temperatures. The DUT shall remain at each extreme for minimum of 1 h at the cell level, 6h at module level, or as required to reach a uniform temperature (+5'C) at the park level. A total of five cycles shall be performed. After thermal cycling, inspect the DUT for any damage, paying special attention to any damage, paying special attention to any seals that may exist. Also, determine whether control circultry, if any, is operational. Perform three C/3 discharge cycles at 25'c ambient air temperature before and after test (using the manufacturers recharge algorithm) to determine immediate effects of the thermal cycling.
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