In order to increase testing coverage and the efficiency of the power storage battery industry, Chroma ATE has developed an automated inspection system that can be applied to the EOL (End Of Line) of battery packs production for testing the assembly defects, Battery Management System (BMS) communication, internal power switches, battery balancing circuits/consistency, and temperature distribution, etc. before battery packs are shipped out of the factory.
The comprehensive PASS/FAIL tests can not only be used in production lines, but may also be used in a development phase nearing completion or used during battery pack acceptance inspection for EV or energy storage station.
System Structure
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Standard Function Test Items
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(1) Isolation Test:
- Terminal(HV+, HV-) insulation resistance
- Ground isolation
- Shield impedance
- Hi-Pot test
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(2) Electrical Test:
- HV interlock fuction test
- Max. and Min Voltage/Temperature range test
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(3) CAN Communication Test:
- Cell and Pack voltage/Temperature
- Contactor characterization
- Diagnostic trouble and fault mode test
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(4) Performance Test:
- Standard charge/discharge capacity test
- Drive profile cycle test
- DCIR / OCV test
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Customized Fixture to Connect Different Spec. of Battery Module with Automated Switch Control
(A) The fixture for battery pack and auto testing system
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(B) Control digital I/O card + trigger signal to switch fixture on/off or alarm
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