HEV/EV battery-management system (BMS)

Advance the adoption of electric vehicles worldwide using our continuous innovation and system expertise in battery management system (BMS) solutions

Browse applications
What's next in battery management systems?
The battery is at the heart of the drive toward electrification. Advanced battery management system (BMS) solutions can help overcome the challenges affecting widespread adoption: drive range, safety concerns, reliability and cost. We are committed to developing innovative products that harness technological breakthroughs in the most critical BMS functions: cell monitoring, high-voltage sensing, current sensing, contactor control, high-voltage disconnection, isolation monitoring and high-voltage interlock.

Why choose TI for your battery management system?

checkmark

Maximize driving range

Enchance state-of-charge accuracy with high-precision battery monitoring and reduce vehicle weight with advanced wireless battery management system.

checkmark

Enable safer operation

Advanced diagnostics and early detection help to prevent thermal runaway and propagation.

checkmark

Make electric vehicles (EVs) more affordable

Our technology enables the use of multiple battery chemistries (including lithium iron phosphate (LFP)) and move to new advanced architectures.

Enabling technologies

Accurate monitoring

Battery monitoring integrated circuits (ICs) measure cell voltages and temperature and perform cell balancing to monitor and protect the cells. Accurate monitoring enables more efficient battery use, resulting in longer run time and a reduction in battery size and cost.

The pack monitor performs high voltage, current and temperature measurements to diagnose and manage the safety of the battery packs. Our battery cell monitoring ICs and pack monitors are designed to work together, to enable synchronized measurements of cell voltage, pack voltage and current.

Technical article
How to design an intelligent battery junction box for advanced EV battery management systems
Effective voltage and current synchronization enables precise state-of-health, state-of-charge and electrical impedance spectroscopy calculations that will result in optimal utilization of the EV battery.
Technical article
Conserve battery power in HEV/EVs with automatic host reverse wakeup
Read how our patented wake-up-at-fault technology enables total system shutdown when the vehicle is parked or turned off, which conserves battery power, improves cell balancing and supports safety requirements.
Application note
Expanding Functionality of Cell Supervision Unit in Battery Management Systems
As more vehicles become electrified, the need to achieve the highest levels of functional safety with high-accuracy battery monitoring is paramount. Read how to conserve battery power in HEV.
PDF | HTML
Featured products for Battery cell & pack monitoring
NEW BQ79718-Q1 PREVIEW Automotive 18-S precise battery monitor, balancer and integrated protector compliant to ASIL-D
NEW BQ79731-Q1 PREVIEW Automotive battery junction box voltage monitor, current sensor and isolation impedance sensor
NEW ADS131B26-Q1 PREVIEW Automotive high-voltage battery-pack monitor with six ADC channels for current and voltage sensing

Enabling higher-density battery packs

Revolutionize electric vehicle (EV) battery management with the industry’s leading network availability for wireless BMS, featuring an independently-assessed functional safety concept that empowers automakers to reduce the complexity of their designs, improve reliability and reduce vehicle weight to extend drive range.

Benefits:

  • Improve system cost and reduce production complexity by eliminating wiring harness.
  • Enable new architectures to better use available space and to design higher density battery packs.
  • Speed up the assembly pace and get to market faster with higher degree of automation by removing heavy, expensive, maintenance-prone wires and using less connectors.
Video
Why wireless for battery management systems?
Watch the benefits of using 2.4-GHz wireless connectivity technology in an automotive BMS.
Functional safety information
Functional Safety-Relevant Wireless Communication in Automotive BMS
Read about functional safety-relevant wireless communication in automotive BMS.
PDF | HTML
Technical article
Improve wireless battery management with the industry’s best network availability
Discover why network availability is critical for wireless BMS in electric vehicles.
Featured products for Wireless BMS
NEW CC2662R-Q1 ACTIVE Automotive qualified SimpleLink™ wireless MCU for use in wireless battery management systems
NEW BQ79718-Q1 PREVIEW Automotive 18-S precise battery monitor, balancer and integrated protector compliant to ASIL-D

Delivering industry-leading reliability

Our portfolio of solid-state relays deliver industry-leading reliability to help make electric vehicles safer.

Benefits:

  • Increase reliability with 10 times higher operating lifetime than electromechanical relays.
  • Reduce system size and cost by up to 50% with integrated power and signal isolation.
  • Improve safety of 800-V EV battery-management systems:  solid-state relays survive more avalanche current than traditional photorelays, eliminating the need for a reed relay disconnect.
Technical article
How to achieve higher reliability isolation and a smaller solution size with solid-state relays
This new isolation technology can help to achieve lifetime reliability and fast switching speeds, along with low noise, shock vibration and power consumption.
Application note
Why Pre-Charge Circuits Are Necessary in High Voltage Systems
Learn why pre-charge circuits are necessary in high-voltage systems.
PDF | HTML
Application note
Cascoding Two TPSI3050 Isolated Switch Drivers to Increase Gate Drive Voltage
Learn how cascoding two TPSI3050 isolated switch drives increase gate drive voltage.
PDF | HTML
Featured products for Solid state relays
NEW TPSI3050-Q1 ACTIVE Automotive reinforced isolated switch driver with integrated 10-V gate supply
NEW TPSI2140-Q1 PREVIEW Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating

Streamline your functionaly safety system certification

Meet the rigorous requirements of functional safety standards, such as ISO 26262, with our analog and embedded processing products. In addition to our functional safety-certified engineers, available documentation and resources such as functional safety Failures In Time (FIT) rate, failure modes, effects and diagnostic analysis (FMEDA), safety certificates and software diagnostics libraries help you streamline the certification process.

Download
Functional safety information
Functional Safety-Relevant Wireless Communication in Automotive BMS
Learn about functional safety-relevant wireless communication in automotive battery management systems.
PDF | HTML
Functional safety information
Functional Safety Considerations in Battery Management for Vehicles
Learn about functional safety considerations in battery management for vehicle electrification.
PDF
White paper
Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 623801
Learn about functional safety FIT base failure rate estimates per IEC 62380 and SN29500.
PDF
Featured products for Functional safety
NEW BQ79718-Q1 PREVIEW Automotive 18-S precise battery monitor, balancer and integrated protector compliant to ASIL-D
BQ79656-Q1 ACTIVE Automotive 16-S precision battery monitors, balancer, current sensor with ASIL-D compliance
NEW TPSI2140-Q1 PREVIEW Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating
“Semiconductor technology is vital to battery management and vehicle electrification. Our chips enable longer range and safe operation at a fraction of the cost of a battery pack.”
– Samuel Wong | Texas Instruments General manager, BMS

Featured products

NEW Battery monitors & balancers BQ79718-Q1 PREVIEW Automotive 18-S precise battery monitor, balancer and integrated protector compliant to ASIL-D
NEW Battery monitors & balancers BQ79731-Q1 PREVIEW Automotive battery junction box voltage monitor, current sensor and isolation impedance sensor
NEW Solid-state relays TPSI2140-Q1 PREVIEW Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating
NEW Other wireless technologies CC2662R-Q1 ACTIVE Automotive qualified SimpleLink™ wireless MCU for use in wireless battery management systems
25 Jan 2022 | COMPANY BLOG

As automakers consider new EV battery chemistries, battery management systems (BMS) with advanced semiconductor technologies are more critical than ever.

Read more

Technical resources

White paper
White paper
How Innovation in Battery Management Systems is Increasing EV Adoption
This paper takes an in-depth look into the trends affecting BMS development and how the major subsystems work together to improve safety and efficiency.
document-pdfAcrobat PDF
White paper
White paper
Wired vs. Wireless Communications In EV Battery Management
Learn about wired vs wireless communications in EV battery management.
document-pdfAcrobat PDF
Technical article
Technical article
Enhance thermal management in EVs with autonomous cell balancing
Read how autonomous cell balancing can enhance thermal management and reliability of HEV/EV BMS.

Reference designs related to HEV/EV battery-management system (BMS)

Use our reference design selection tool to find designs that best match your application and parameters.