Week #7: Discussion results
Battery management
Group #33
Group member:
Tianhao Han
Ximeng Sun(Susie)
Xing Cao(Star)
Zhuoran Yang
Family of Battery Management
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Battery Fuel Gauge
Battery Charge Management
Lithium Ion Protection
Charger Front End Protection
Battery Authentication
Battery Fuel Gauge: measure battery current, voltage
and temperature to find state-of-charge.(99% accuracy)
Battery Charge Management: critical for maximizing
battery capacity, cycle life and safety.
Lithium Ion Protection: offer this protection with the
BiCMOS process, different voltage thresholds, sleep
current consumption of less than 3.5µA, 50 mV precision
internally trimmed thresholds and short-circuit
protection.(overcharge, over discharge and short circuit
conditions)
Charger Front End Protection: provide protection
from input over voltage, input over current and battery
over voltage conditions, which may result from a power
spike during charging, or a defective or incorrect wall
adapter.
Battery Authentication: achieve required performance
and safety goals
2
I2C (𝐼 C)
Inter-Integrated Circuit:
A multi-master serial single-ended computer bus.
It is used to attach low-speed peripherals to a motherboard, embedded
system, cellphone, or other electronic device.
SMBus (SMB)
System Management Bus:
It is a single-ended simple two-wire bus for the purpose of lightweight
communication. Most commonly it is found in computer
motherboards for communicaiton with the power source for
ON/OFF instructions.
SMBus, defined by Intel in 1995, is a subset of I²C that defines the
protocols more strictly.
One purpose of SMBus is to promote robustness and interoperability.
Accordingly, modern I²C systems incorporate policies and rules from
SMBus, sometimes supporting both I²C and SMBus with minimal reconfiguration required.
HDQ
Battery Fuel Gauge (68)

BQ27545-G1
Single Cell, Pack Side, Impedance Track Fuel Gauge

BQ27541-G1
Pack-Side Impedance Track Battery Fuel Gauge With
Integrated LDO

BQ34Z653/BQ34Z100
SBS 1.1-Compliant Fuel Gauge and Protector with
External Battery Heater Control and LCD Display
Battery Charge Management (182)

BQ24161B
2.5A, Dual-Input, Single Cell Switchmode Li-Ion Battery Charger with
Power Path

BQ24273
2.5A, Singe Input, Single Cell Switchmode Li-Ion Battery Charger with
Integrated Current Sense & I2C

BQ24278
2.5A, Single-Input, Single Cell Switchmode Li-Ion Battery Charger with
Power Path Management
Lithium Ion Protection (40)
BQ294700
 BQ294701
 BQ294701

Lithium ion protection IC offering accurate, cell-by-cell V monitoring
Charger Front End Protection (17)

BQ24314C
Overvoltage & Overcurrent Protection IC & Li+ Charger Front End
Protection IC
Battery Fuel Gauge
Battery management for
companies
 TI(Device Uses)
Light Electric Vehicles
Power Tools
Medical Instrumentation
Uninterruptible Power Supplies (UPS)
Mobile Radios
Battery management for
companies
Intel
There is a product named Intel® RAID Smart
Battery AXXRSBBU3, which is an optional
RAID Smart battery back up for use with Intel®
RAID Controllers AXXRAK18E, SRCSAS144E,
SRCSASJV.
For my opinion, TI’s BQ34Z100 can be used
in it. Because for this backup battery, to be
controlled automatically to reduce system power
consumption so that the backup battery can be
used longer is significant.

Battery management for
companies
 Dot Hill
AssuredSAN™ Pro 5000 Tiered Storage adds
automated tiered storage capabilities to our
smart, simple, SAN storage line-up.
Using BQ34Z100 on the equipment can
improve its behavior, and reduce system power
consumption.
Battery Chargers – Moving
Towards Smart Chargers
 Nowadays,
green battery chargers are
growing. Green chargers are environment
friendly, and The most attractive selling point
for green chargers is the mobility aspect, It is
convenient and accessible anywhere since
these chargers do not require an electrical
socket or plug to be charged. Customers can
use them while on the move and in any kind of
environment.
 Are there any chances that TI’s products can
be used in green battery?
Question time.
Thank you for your listening!