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The Key Points And Recommended Tools And Methods of Software BMS Testing​

The following are some of the key points and recommended tools and methods when performing software BMS (Battery Management System) testing:

1. Model-based algorithm development:

 – SOC (State of Charge) estimation is the core of BMS algorithms, and the current trend is to develop algorithms based on battery monomer models. The complexity of the battery monomer model varies under different BMS accuracy requirements. A large number of test cases need to be set up for testing, from MiL (Model in the Loop) to SiL (Software in the Loop) to HiL (Hardware in the Loop), all of which require the reuse of these test cases.

2. Embedded System Test Tools:

 – Germany PikeTec’s embedded system test tool TPT based on the model development, can realize the test case reuse, automation from the execution to the generation of test reports, and can be evaluated in the test or test data after the test, applicable to new energy vehicles lithium battery closed-loop control system model testing.

3. Modularized test on PXI platform:

 – Test systems based on the PXI platform provide fully flexible test systems that can be optimized to meet exact requirements and can be easily modified to meet changing needs. This industry-standard open architecture extends system life and reduces product obsolescence, while facilitating the integration of instruments and communication modules from different vendors.

4. Automated HiL test system:

 – The BMS522 model test system provides a complete vehicle model to simulate the working process of real vehicle powertrain and battery system, controlling the high-voltage power supply, current simulation system, single battery simulation system and temperature simulation system on the battery. At the same time, with a powerful hardware platform and friendly interface of the upper computer test software, it can realize the control, display and management of the whole test process.

5. Battery management system test system:

 – Support more than 200 channels, modularized design, according to different testing needs to build the test system. Total voltage simulation up to 10000V, support active equalization, passive equalization test, BMS, BMU and other static power consumption test, temperature simulation, support for a variety of NTC table import, insulation resistance simulation, built-in short-circuit, disconnection, polarity reversal and other fault simulation.

6. BMS test solution:

 – Shenzhen Festech Technology Co., Ltd. provides BMS test solutions, with reference to the new national standard requirements, combined with battery charging and discharging, new energy vehicles and energy storage system testing experience launched. Test functions include single battery voltage simulation, single battery current simulation, single battery internal resistance simulation; battery single fault injection simulation; battery active equalization, passive equalization simulation; battery cluster total voltage simulation, charging and discharging total current simulation.

7. Open source BMS HIL simulation test system program:

 – Recommended open source projects provide a detailed program of BMS HIL simulation test system , covering the whole process from hardware to software , to help users fully understand and implement the BMS HIL simulation test system .

8. Video tutorials and resources:

 – Shanghai Tacteasy Information Technology Co., Ltd. provides a video series that introduces various methods and techniques for verifying, validating and testing BMS models in Simulink, including requirements management, unit testing, test management, test coverage metrics, code generation and testing, closed-loop testing, and hardware-in-the-loop simulation.

The above tools and methods enable effective software BMS testing to ensure the performance, safety and reliability of the battery management system.

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