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EVM User's Guide: BQ41Z50EVM
BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module
Description
The BQ41Z50EVM is a complete system useful for
evaluating the functionality of the BQ41Z50 fuel
gauge. This gauge is appropriate for applications
powered by multi-cell battery systems. The EVM
includes one BQ41Z50 circuit module, a current
sense resistor, and four thermistors. This evaluation
module (EVM) is a complete evaluation system for the
BQ41Z50 battery management system.
SLUUD32 – JUNE 2024
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Features
•
Complete evaluation system for the BQ41Z50EVM
Li-Ion Battery Pack Manager Evaluation
Module and BQ296103 independent overvoltage
protection IC
•
Populated circuit module for quick setup
•
Software that allows data logging for system
analysis
Copyright © 2024 Texas Instruments Incorporated
BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module
Description
1
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Summary of Contents for Texas Instruments BQ41Z50EVM
- Page 1 EVM User's Guide: BQ41Z50EVM BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module Description Features The BQ41Z50EVM is a complete system useful for • Complete evaluation system for the BQ41Z50EVM evaluating the functionality of the BQ41Z50 fuel Li-Ion Battery Pack Manager Evaluation gauge.
- Page 2 BQ41Z50 and BQ296103 circuit module • Cable to connect the EVM to an EV2400 communications interface adapter 1.3 Specification This section summarizes the performance specifications of the BQ41Z50EVM and BQ296103EVM. Table 1-1. BQ41Z50 and BQ296103 Circuit Module Performance Specification Summary Specification Unit Input voltage Pack+ to Pack–...
- Page 3 Find the latest software version in the BQ41Z50 tool folder on www.ti.com. Use the following steps to install the BQ41Z50 Battery Management Studio software: 1. Download and run the Battery Management Studio setup program from the Development Tools section of the BQ41Z50EVM product folder on www.ti.com. See Section 4.1 for detailed information on using the tools in the Battery Management Studio.
- Page 4 Find the latest firmware version in the appropriate BQ41Z50 folder on www.ti.com. Use the following steps to install the BQ41Z50 Battery Management Studio software: 1. Run Battery Management Studio from the Start | Programs | Texas Instruments | Battery Management Studio menu sequence, or the Battery Management Studio shortcut.
- Page 5 4 Software 4.1 Battery Management Studio 4.1.1 Registers Screen Run Battery Management Studio from the Start | Programs | Texas Instruments | Battery Management Studio menu sequence, or the Battery Management Studio shortcut. The Registers screen (see Figure 4-1) appears.
- Page 6 The correct setting of these options is essential to get the best performance. The settings can be configured using the Data Memory screen (see Figure 4-2). Figure 4-2. Data Memory Screen BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module SLUUD32 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 7 Press the Calibrate Gas Gauge button to calibrate the temperature measurement system. • Deselect the Calibrate boxes after temperature calibration has completed. SLUUD32 – JUNE 2024 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 8 4.1.3.3 Current Calibration The Board Offset calibration option is not offered in Battery Management Studio, because the Board Offset calibration is not required when using the BQ41Z50EVM. • Connect and measure a -2A current source from 1N (–) and Pack– (+) to calibrate without using the FETs. (TI does not recommend calibration using the FETs).
- Page 9 4. Press the Read FS from Data Memory to save the Flash memory contents to the file. Wait for the Operation executed successfully message at the left bottom corner of the BQStudio screen. SLUUD32 – JUNE 2024 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 10 – SMBus Read Block. Command = 0x44. Data read = 06 00 10 12 – That is 0x1210, chem ID 1210 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module SLUUD32 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 11 Hardware Design Files 5 Hardware Design Files 5.1 BQ41Z50EVM Circuit Module Schematic This section contains information on modifying the EVM and using various features on the reference design. 5.1.1 LED Control The EVM is configured to support three LEDs to provide state-of-charge information for the cells. Press the LED DISPLAY button to illuminate the LEDs for approximately 5 seconds.
- Page 12 Hardware Design Files www.ti.com Figure 5-2. Bottom Silk Screen Figure 5-3. Top Assembly BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module SLUUD32 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 13 Hardware Design Files Figure 5-4. Bottom Assembly Figure 5-5. Top Layer Figure 5-6. Bottom Layer SLUUD32 – JUNE 2024 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 14 Figure 5-7. BQ41Z50 Schematic Note The precharge function is currently unavailable on the initial EVM revision. R2 was unpopulated for this reason. BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module SLUUD32 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 15 Vishay-Siliconix None DMN2450UFB4-7R Trans Mosfet N- ch 20V 1A 3-PIN Dfn SMD T/r MOSFET N-CH 30V 6.3A SSOT-6 ON Semiconductor SLUUD32 – JUNE 2024 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 16 4.9x4.9mm EVQ-PLHA15 Panasonic 15 VDC, SMD SH-J1, SH-J2, SH-J3, SH-J4, Shunt, 100mil, Gold plated, Black Shunt SNT-100-BK-G Samtec 969102-0000-DA SH-J5 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module SLUUD32 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 17 Dexerials Fuse, 30A, 62VDC, SMD 9.5x2x5mm SFK-3030 Corporation FID1, FID2, Fiducial mark. There is nothing to FID3 buy or mount. SLUUD32 – JUNE 2024 BQ41Z50 Li-Ion Battery Pack Manager Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 18 Additional Information www.ti.com 6 Additional Information 6.1 Trademarks Impedance Track ™ is a trademark of Texas Instruments. Microsoft ® and Windows ® are registered trademarks of Microsoft Corporation. All trademarks are the property of their respective owners. 7 Related Documentation from Texas Instruments •...
- Page 19 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 20 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 21 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 22 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 23 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
- Page 24 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...
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