STMicroelectronics Reveals Latest Innovation in Electric-Vehicle Energy Management for Cleaner and Safer Mobility
February 18 2020 - 9:00AM
STMicroelectronics Reveals Latest
Innovation in Electric-Vehicle Energy Management for Cleaner and
Safer Mobility
- New Battery-Management System chip delivers enhancements to
extend driving range, reliability, and safety of electric
vehicles
- Introduces industry-leading sensing accuracy, temperature
monitoring, and innovative features
Geneva, February 18, 2020 – STMicroelectronics (NYSE:
STM), a global semiconductor leader serving customers
across the spectrum of electronics applications, has revealed new
battery-management technology that increases reliability, safety,
driving range, and cost-effectiveness of electric vehicles
(EVs).
EVs are predicted to reach cost parity with conventional
combustion-engine vehicles before the end of this decade and
overtake in sales volume by 20381. ST, leveraging its technical
capabilities to help car makers achieve these goals, has announced
an advanced battery-management system (BMS) controller that
features the industry’s best voltage accuracy for longer driving
range and battery life, with extra temperature-monitoring inputs
for enhanced safety.
The L9963 controller is the latest generation from ST’s BMS
program, which has already created advanced semiconductors for
joint projects with major organizations developing EV batteries.
These include ongoing cooperation with LG Chem, begun in 2008, and
the cooperation with Chinese R&D institute IMECAS and
EV-battery technology company EPOCH announced in 2017.
“We are extending our expertise in electronic technologies in
every way possible to help realize cleaner mobility,” said Alberto
Poma, ADG Vice President, Smart Power Solutions MACRO-Division
General Manager, STMicroelectronics. “Building on over 10 years of
work with key partners in EV battery-management technology, our new
battery-management chip further improves every aspect of energy
management in EVs, which directly enhances important end-user
experiences to increase market appeal and consumer confidence.”
A typical BMS application uses multiple L9963 devices to monitor
groups of cells in the battery stack, managed by a host
microcontroller (MCU) such as ST’s SPC5 high-performance,
safety-critical automotive-qualified MCUs.
The L9963 is in production now and ready for new designs. Please
contact your local ST sales office for further information and
pricing options.
Further technical information:
The L9963 can monitor up to 14 stacked battery cells, measuring
voltages with accuracy better than 2mV in the 1.7V–4.7V range to
maintain superior cell condition. Simultaneous digitization of all
sensed values, considered to be a first for this type of
battery-management product, eliminates cell-synchronization
delays.
The L9963 can also monitor up to seven external temperature
sensors, enhancing the system’s ability to detect fluctuations and
maintain stability.
Meeting ASIL-D requirements in compliance with the ISO 26262
standard, the L9963 integrates a fully redundant cell-measurement
path that enhances safety and provides support for a ‘limp home’
mode. Comprehensive fault-detection and notification functions
meeting automotive safety requirements are also built in.
Together with a serial peripheral interface (SPI), the L9963
features a 2.66Mbps vertical communication interface for high-speed
communication between multiple L9963 ICs monitoring the entire
battery stack. This permits eight devices to convert and read 96
cells in less than 4ms, and can work with any combination of
transformer-based or capacitive isolation.
The L9963 also features a robust design that allows hot plugging
without the external Zener diodes usually needed to protect the BMS
because the battery cannot be powered down. The L9963 allows
designers to eliminate these components and hence further reduce
costs.
Further information can be found on
www.st.com/automotive-bms
About STMicroelectronicsST is a global
semiconductor leader delivering intelligent and energy-efficient
products and solutions that power the electronics at the heart of
everyday life. ST’s products are found everywhere today, and
together with our customers, we are enabling smarter driving and
smarter factories, cities and homes, along with the next generation
of mobile and Internet of Things devices.
By getting more from technology to get more from life, ST stands
for life.augmented.
In 2019, the Company’s net revenues were $9.56 billion, serving
more than 100,000 customers worldwide. Further information can be
found at www.st.com.
For Press Information Contact:
Michael Markowitz Director Technical Media Relations
STMicroelectronics Tel: +1 781 591 0354 Email:
michael.markowitz@st.com
1 https://about.bnef.com/electric-vehicle-outlook/
- P4233A -- Feb 18 2020 -- Battery Management System IC_FINAL FOR
PUBLICATION
- P4233A -- Feb 18 2020 -- Battery Management System
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