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Summary of Contents for ST STSW-L9961BMS
- Page 1 Quick Start Guide STSW-L9961BMS Software package for the STEVAL-L99615C kit - L9961 industrial battery management system ST Confidential...
- Page 2 STSW-L9961BMS Software package ST Confidential...
- Page 3 Key topics of the STSW-L9961BMS Software package • Software package specifically designed for the STEVAL-L99615C kit to demonstrate the capabilities of the L9961 industrial BMS IC • Includes the L9961 driver component, along with its register map and related basic APIs •...
- Page 4 STSW-L9961BMS Software Architecture Main SW functional layers are: 1. Hardware abstraction divided in Applications & Battery status monitoring Coulomb counting • STM32CubeG0 HAL and LL Hardware demonstration (voltage, current and temperature) Abstraction Layer for the STM32G0 microcontroller Board Support L9961...
- Page 5 STSW-L9961BMS: BSP drivers The Board Support Package comprises the following drivers: • the L9961 component device, including the register map of the device, the basic functions to manage registers at bit level, the write/read functions (single-register and multi-registers), and the APIs to configure the device and manage its functionalities (i.e.
- Page 6 STSW-L9961BMS Application Demos ST Confidential...
- Page 7 Application Demos • The STSW-L9961BMS package contains some application demos that, when running within the STEVAL-L99615C, allow for the evaluation of the features and performances of the L9961 • The Application Demos are: − App Demo #1 - Battery status monitoring −...
- Page 8 STSW-L9961BMS output data viewers • Different viewer layouts allow live monitoring of the acquired data and elaborated data. For the viewer selection, you may use the keyboard 1, 2 and 3 keys or press the Nucleo blue button for a long time.
- Page 9 Application User source and header files of the project • The project directory, in the Documentation sub-directory, contains the STSW-L9961BMS.chm Doxygen file • The Doxy file enriches the code with relevant information about STSW-L9961BMS firmware architecture and...
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Page 10: Kit Overview
STEVAL-L99615C Kit Overview ST Confidential... - Page 11 FW driver and application examples STSW-L99615C SW GUI : the GUI contained in the STSW-L96615C is exclusive to the FW contained in the same SW package and cannot be used with the one of the STSW-L9961BMS packages. ST Confidential...
- Page 12 STEVAL-L99615C at a glance! STEVAL-L99615CX L9961 NUCLEO-G071RB (top view) 5-cell BMS IC ST-Link V2 On-board embedded Battery simulation programmer stage Cells connector STM32G071RB application MCU STEVAL-L99615CX (bottom view) HS and LS pack relays Battery pack connector Morpho connectors ST Confidential...
- Page 13 Application Demo #1: Battery status monitoring ST Confidential...
- Page 14 STSW-L9961BMS: Application Demo #1 • The Application Demo #1 demonstrates the L9961's capability to monitor the characteristics of a 5-cell battery pack, both as a whole and for each individual cell Application • The Demo acquires: Core, User and Startup files •...
- Page 15 To set up the demo and run the application with the evaluation kit, the following items are required: • a STEVAL-L99615C kit • the STSW-L9961BMS software package • a USB Type-A to Micro-B cable • a portable power supply (for example, up to 20 V,...
- Page 16 Application Demo #1: jumpers' setup • Verify that the setting of the STEVAL-L99615C jumpers respects the configuration depicted in the picture and reported in the following Table ST Confidential...
- Page 17 Thus, the Application Demo 1 acquires the voltages on each resistance representing the Cell voltages (Vcell1, …, Vcell5) • To enable the internal 5-cell emulation network, verify the headers are fit on the J5 jumpers in the STEVAL-L99615C expansion board ST Confidential...
- Page 18 • Vice versa, the increase of the resistance value corresponding to the acquired voltage decrease refers to the temperature decrease R15 variable resistor emulating an • This mechanism also enables the demonstration of over/under temperature detection operation carried out by the L9961 L9961 ST Confidential...
- Page 19 Connect the NUCLEO board of the STEVAL-L99615C kit to the laptop through the USB cable • Drag and drop the Demo1 binary file of the STSW-L9961BMS application firmware , from the origin folder to the NUCLEO that has been mapped by the laptop OS as an external peripheral •...
- Page 20 Connect the power supply terminals to the B+ and B- pins of the battery pack connector (CN2), and power on the appliance (in the example, the power supply has been set 12 V, 1 A as test rating) ST Confidential...
- Page 21 Application Demo #1: running • Once programmed and set-up the serial communication console (COM speed: 115200) to display the output data, select the proper viewer layout ST Confidential...
- Page 22 (in our example VB is the power supply voltage). Battery current Current is the current flowing from/on the battery pack (null when no load connected) • Temperature is dually expressed, by the external NTC and by the Die Temperature DIE internal sensor (DieTemp) ST Confidential...
- Page 23 • Application Demo 1 has been set to release an Alert message when relevant events occur (for example, when the NTC OverTemperature Threshold is exceeded) • In fact, turning the NTC screw clockwise, its value decreases and when it reaches 900mV, the demo releases a Fault message indicating the cause (NTC_OT), while the Fault character becomes F ST Confidential...
- Page 24 Application Demo #1: Output messages in Fault acquisition (2/2) • Turning counterclockwise, till the NTC value exceeds the 900mV, a new message indicating the fault cleaned is released and the Fault character goes back to N ST Confidential...
- Page 25 Application Demo #2: Coulomb counting ST Confidential...
- Page 26 STSW-L9961BMS: Application Demo #2 • The Application Demo #2 utilizes the Coulomb counting mechanism integrated in the L9961 device, to measure the charges flowing through the five cells composing a battery pack • This demo estimates the initial residual charge of the...
- Page 27 To set up the demo and run the application with the evaluation kit, the following items are required: • a STEVAL-L99615C kit • the STSW-L9961BMS software package; • a USB Type-A to Micro-B cable • a battery pack composed of five 18650 cells and related connecting cables •...
- Page 28 Application Demo #2: jumpers' setup • Verify that the setting of the STEVAL-L99615C jumpers respects the configuration depicted in the picture and reported in the following Table ST Confidential...
- Page 29 J17 and J18 headers with jumpers to 1-2 load switches position • Moreover, it’s necessary to open all the jumpers from J5 headers to exclude the internal passive network that emulates the battery cells on the expansion board ST Confidential...
- Page 30 Connect the NUCLEO board of the STEVAL-L99615C kit to the laptop through the USB cable • Drag and drop the Demo2 binary file of the STSW-L9961BMS application firmware , from the origin folder to the NUCLEO that has been mapped by the laptop OS as an external peripheral •...
- Page 31 (and set COM speed @ 115200) : to properly run the demo measuring a significant amount of current (at least 10mA), it is suggested to connect to the battery holder CN3 connector a resistance of 2,2kΩ. Otherwise an electronic load is suggested. ST Confidential...
- Page 32 : this demo was run with the battery holder board hosting five LG Chem INR18650-MJ1 cells, and a programmable electronic load connected to its CN3 connector, sinking 500mA : The L9961 Coulomb counting mechanism is described in all its components in paragraph 3.5.2 of the DS14012 datasheet. ST Confidential...
- Page 33 © STMicroelectronics - All rights reserved. ST logo is a trademark or a registered trademark of STMicroelectronics International NV or its affiliates in the EU and/or other countries. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service names are the property of their respective owners.
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