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Bloomy’s System Allows Testing of Battery Management Systems

Electrification companies and test labs can rapidly and economically evaluate multiple BMS designs using a new validation system.

Kevin Clemens

January 31, 2022

3 Min Read
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Bloomy Controls, Inc. has developed a new hardware-in-the-loop (HIL) test system for evaluating the battery management systems (BMS) that monitor and control advanced lithium-ion batteries.  Called FLEX BMS™ Validation System,  it has been specifically designed by the Connecticut-based firm for electrification companies and test labs that need to evaluate multiple BMS hardware designs and software and/or firmware versions. The FLEX BMS Validation System simulates the battery cells and vehicle electronic signals with simple connections to the BMS and user-friendly, customizable BMS test software.

“We’re excited to introduce the new FLEX BMS™ Validation System,” said Grant Gothing, Chief Technology Officer at BLOOMY in a company news release. “Electrification companies and test labs now have a convenient and repeatable system for validating multiple battery management systems. Originally designed for evaluating customer-provided BMSs inside our own HIL Technology Evolution Center, we like it so much that we decided to make it commercially available as a new test system offering.” The FLEX BMS™ Validation System is a smaller and more economical variation of Bloomy’s full BMS HIL Test System that has proven to be popular among companies that are developing electric vehicles (EV).

Related:Battery Technology’s Top 10 Stories For 2021

Applications for the BMS Validation System include:

  • Rapid prototyping and product development - quickly “breadboard” test multiple different variants or “spins” of the BMS hardware, software and/or firmware

  • Application testing - evaluate the configuration, performance and safety of several sample or prototype BMSs, from the same or different third-party suppliers, under the same conditions in a simulated application

  • Regression testing - run comprehensive test scripts for the evaluation of short- and long-term performance and reliability of different BMS hardware, software and firmware updates

Bloomy FLEX BMS Validation System copy.jpg


The FLEX BMS Validation System uses the company’s Battery Simulator 1200, a commercial, off-the-shelf instrument for safe and efficient simulation of battery cell voltages and balancing currents. The Battery Simulator 1200 is FCC- and CE-certified and has been relied upon by battery electrification companies globally for a decade.

Additional features of the FLEX BMS  Validation System include:

  • Ergonomic Signal Interface Panel provides quick and convenient access to simulated battery and vehicle electronic signals

  • Simple connectivity to the BMS under test through common, industry-standard connectors and breakout boards without the need for specialty tools

  • Real-time, deterministic execution of models and controls using embedded Linux Real-Time controller

  • Supports standard as well as customer-proprietary models developed using The Mathworks Simulink, C/C#/C++ and NI LabVIEW

  • User-friendly graphical BMS interface provides interactive control of model execution and manual control and monitoring of all signals

  • Supports NI TestStand test sequences and Python scripts

Related:Study Considers Solutions To Sustainability for EV Battery Production

Bloomy Controls, Inc. has been providing  automated test solutions for mission-critical and emerging applications connecting R&D, validation and production with a digital thread since 1992.

Kevin Clemens is a Senior Editor with Battery Technology.

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