Download File - Strategy Marketing ----- Senior Design May 13-33

Strategic Marketing Engineering
Group May#13-33
Adviser & Client: Dr. Randall Geiger
In consultation with: Garry Elder
System Engineering Manager at TI
Team leader: Ximeng Sun (Susie)
Communicator: Xing Cao (Star)
Web master: Zhuoran Yang
Strategic Marketing Engineering
Group May#13-33

Problem statement

What we have done
◦ Background Information
◦ Ideas

Challenge

Conclusion
Problem Statement
Strategic Marketing Engineering
Group May#13-33
• Understand TI’s existing battery management
products
• Broaden the market with existing products
• Find out if there is an architecture which
customers need but TI does not have it yet
Strategic Marketing Engineering
Group May#13-33

Problem statement

What we have done
◦ Background Information
◦ Ideas

Challenge

Conclusion
Background Information

Strategic Marketing Engineering
Group May#13-33
Marketing Engineer
◦ Understands technical aspects of engineering
◦ More involved in the definition and sales of products

Market Survey
◦ One billion dollars
◦ 80% of the whole market
Our Ideas
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Wireless charging

Green energy

RAID battery
Strategic Marketing Engineering
Group May#13-33
Wireless charging

Strategic Marketing Engineering
Group May#13-33
Wireless recharged battery
Battery management
inductor
wire connect
Wireless charging

Invisible implant to table
Strategic Marketing Engineering
Group May#13-33
Our ideas

Wireless charging

Green energy

RAID battery
Strategic Marketing Engineering
Group May#13-33
Kinetic Energy
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Strategic Marketing Engineering
Group May#13-33
KERS(Kinetic Energy Recovery System)
◦ An automotive system for recovering a moving
vehicle's kinetic energy under braking
◦ The recovered energy is stored in a battery for later
use
KERS idea
Strategic Marketing Engineering
Group May#13-33
Strategic Marketing Engineering
Group May#13-33
Why did not pursue these two ideas:

TI has been doing some of these products

TI is not interested in some of our ideas

Engineering and scientific challenges
◦ Extend wireless charging
◦ Limited time
Hot News!

At April 5, 2013, Fisker Automotive, a producer of
hybrid cars, has laid off most its employees and is
exploring bankruptcy.
Our ideas

Wireless charging

Green energy

RAID battery
Strategic Marketing Engineering
Group May#13-33
Strategic Marketing Engineering
Group May#13-33
RAID controller battery

What is RAID?
◦ Redundant array of independent disks

What is RAID controller battery?
◦ A back-up battery
◦ Power the RAID controller’s write cache
(HP Battery Backed Write Cache Upgrade
512MB Cache RAID Controller Battery Kit)
Strategic Marketing Engineering
Group May#13-33
RAID controller battery

Why do we need it?
◦ Decrease data loss risk for power/server
failure

How does it work?
◦ Save data in cache when power fails
◦ Write to cache when power restored
Strategic Marketing Engineering
Group May#13-33
A Typical RAID Battery System
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One 1200mAh lithium ion battery
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One year lifetime

Backup for up to 72 hours
Strategic Marketing Engineering
Group May#13-33
Motivation for RAID controller
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Customer complaints

Servers need to keep working

Large market potential
Existing System vs. Our Design
Existing
Proposed
Improvements

WWR (Working While Replacing)

BRM (Battery Relaxation Mode)

LFME (Line Failure Mode Enhancement)
Our design

Strategic Marketing Engineering
Group May#13-33
A smart RAID controller battery
management chip which has the following
features:
◦ Fuel gauge
◦ Thermal protection
◦ Keep system operational during battery
replacement
◦ Extend battery calendar life
Chips we use

Strategic Marketing Engineering
Group May#13-33
Battery management
◦ Chip BQ24161:
 Thermal protection
 Control the charge voltage, current
◦ Chip BQ27425
 Fuel gauge

ORing controller
◦ Chip TPS2419
 Determines if the raid controller needs to use the
backup battery
 Determines if the raid controller needs the battery and
which battery to use.
Proposed design
Strategic Marketing Engineering
Group May#13-33
Cyclone-13-33
Smart System
Three main components
Thermal protector
 Smart controller
 Lifetime fuel gauge

Strategic Marketing Engineering
Group May#13-33
Thermal Protector
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
Strategic Marketing Engineering
Group May#13-33
Monitor temperature
Alarm system
◦ Temperature range from 25 ℃ to 55 ℃
◦ Alarm on in unusual mode
◦ Pins for fans
Smart controller
Strategic Marketing Engineering
Group May#13-33
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Induce charge/discharge cycling
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Control switches
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Maintain operation during battery
replacement
Strategic Marketing Engineering
Group May#13-33
Model One(DRC cycling):
Detail of DRC cycling
The DRC cycling for years
Strategic Marketing Engineering
Group May#13-33
Model Two(Benefit of DRC):
Motivation: J. Li, E. Murphy, J.
Winnick, and P. A. Kohl, “The
effects of pulse charging on
cycling characteristics of
commercial lithium-ion
batteries,” J. Power Sources,
vol. 102, no. 1–2, pp. 302–309,
Dec. 2001.
Benefit of doing cycling
Prediction of doing cycling
Lifetime Fuel Gauge
Strategic Marketing Engineering
Group May#13-33
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Detected the current in the circuits
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Monitor the capacity and rest energy of
battery

Determine if the battery need to be changed
Strategic Marketing Engineering
Group May#13-33
LFME(Line Failure Mode Enhancement )
Automatically switch battery every one hour to extend
battery’s lifetime. We can predict that the operation
time will exceed 72 hours(applying “Relaxation
phenomena”).
Reference:
T.F. Fuller, M.Doyle, and J. Newman, “Relaxation phenomena in lithiumion-insertion cells”,
J. Electrochem. Soc., vol. 141, pp. 982–990, April 1994.
Strategic Marketing Engineering
Group May#13-33

Problem statement

What we have done
◦ Background Information
◦ Ideas

Challenge

Conclusion
Challenges

Strategic Marketing Engineering
Group May#13-33
Good lithium ion battery model:
◦ Limited information for commercial lithium ion battery models
◦ Research literature strongly dependent of battery chemistry

How we solved it:
◦ Advise from Garry Elder in battery management group from TI
for help
◦ Advice from Steve Martin, distinguished professor, Material
Science
◦ Inference from:
 J. Li, E. Murphy, J. Winnick, and P. A. Kohl, “The effects of pulse charging on cycling
characteristics of commercial lithium- ion batteries,” J. Power Sources, vol. 102, no. 1–2,
pp. 302–309, Dec. 2001.
 T.F. Fuller, M.Doyle, and J. Newman, “Relaxation phenomena in lithiumion-insertion cells”,
J. Electrochem. Soc., vol. 141, pp. 982–990, April 1994.
Strategic Marketing Engineering
Group May#13-33

Problem statement

What we have done
◦ Background Information
◦ Ideas

Challenge

Conclusion
Conclusion
Strategic Marketing Engineering
Group May#13-33
Some ideas are not practical (For us)
 Make improvement on the RAID battery
 Marketing engineer

◦ Need to understand all technology of existing
products
◦ Have a sense of what is the marketing trend
Questions?
Strategic Marketing Engineering
Group May#13-33
Strategic Marketing Engineering
Group May#13-33
Thanks for listening!
Project Schedule
1
2
Strategic Marketing Engineering
Group May#13-33
• Understand TI’s existing battery management products.
• Understand the technologies and protocols.
3
• Considering who or which potential markets can use the existing
products from TI.
4
• Find a new battery management architecture which will have a big
market.
5
6
• Presenting/consultation ideas with TI and come up with a final idea.
• Try to come out a new product which can be applied into an existing
and developing markets.
Future work
Strategic Marketing Engineering
Group May#13-33
Explore use less battery to keep the
system working for 72 hours (apply
“Relaxation Phenomena”)
 Use the all-solid-state Lithium Secondary
Battery

Reference:
T.F. Fuller, M.Doyle, and J. Newman, “Relaxation phenomena in
lithiumion-insertion cells”, J. Electrochem. Soc., vol. 141, pp. 982–
990, April 1994.
TPS2419
Strategic Marketing Engineering
Group May#13-33
TPS2419
Strategic Marketing Engineering
Group May#13-33
BQ27425
Strategic Marketing Engineering
Group May#13-33
BQ241161
Strategic Marketing Engineering
Group May#13-33
Strategic Marketing Engineering
Group May#13-33
Rest recover for lithium ion battery
Strategic Marketing Engineering
Group May#13-33
One charging/discharging cycle
Reliability Calculation
Strategic Marketing Engineering
Group May#13-33

Time for one charging/discharging:
(600mAh*40%)/(0.1C) = 4 hours(h)

Average capacity percentage for each battery:
(100%+60%)/2 = 80%

Total capacity and time that can be used during
charging/discharging:
80%*600mAh + 600mAh = 1080mAh
1080/1200 * 72h = 64.8 h

Total capacity and time that can be used during rest:
60% * 600mAh + 600mAh = 960mAh
960/1200 * 72h = 57.6 h
Reliability Calculation
Strategic Marketing Engineering
Group May#13-33

Percentage that the system can be used for up to
72h:
(365*24-8*24-0.5*24)/(365*24) = 97.671%
per year

Percentage that the system can be used for up to
64.8h:
8*12*2/(365*24) = 2.192% per year

Percentage that the system can be used for up to
57.6h:
0.5*12*2/(365*24) = 0.137% per year
Strategic Marketing Engineering
Group May#13-33
72h
64.8h
57.6h
BQ500210EVM-689
Input maximum 20V
Thermo cutoff