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Chroma’s Solution to Perform Multi-string Battery Management System Test for Energy Storage System

published: 2014-05-29 14:58

Along with the growth of electric vehicle and energy storage devices, the Battery Management System (BMS) market consists of more than 4 strings in design.  Common designs consist of 7, 13, and 16 strings. Battery Management Systems (BMS) are mainly focused on battery core protection to safeguard the Lithium-ion battery from burning or explosion due to over voltage and leakage caused by under voltage.  Additionally, its communication function sends status back to the system so that the battery pack and system can work together seamlessly.

Though validation is required for product design to ensure reliability and stability, most engineers have their hands tied when testing their multi-string battery management system. Even if a way is found to perform the testing, it can fall short achieving the automation, quickness, reliability, and stability requirements needed; until now.

Chroma applied the 8000 ATS which is well-known in the power electronic industry to battery testing by developing test items specifically for performing automatic tests on the Battery Management System (BMS). The 8000 (8700) ATS has flexible a hardware architecture that can expand with devices and add new test items to meet highly customized and diversified testing requirements for the battery industry.  It is capable of supporting various types of hardware such as DC Power Supplies, Electronic Loads, LCR Meters and 6 1/2 digit Multi Meters, etc. for various automated test applications.

Features of 8000 (8700) include 1 to 25 strings of battery core status simulation, active and passive balance function tests, BMS IC firmware burn-in, BMS communication tests, over/under voltage protection tests (see also charging current status) and over charge/discharge current protection tests.


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