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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. - PowerPoint PPT Presentation
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Strategic Marketing EngineeringGroup May#13-33Adviser & 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
Problem statement
What we have done◦ Background Information
◦ Ideas
Challenge
Conclusion
Strategic Marketing Engineering
Group May#13-33
Problem Statement
• 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
Strategic Marketing Engineering
Group May#13-33
Background InformationMarketing 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
Strategic Marketing Engineering
Group May#13-33
Our IdeasWireless charging
Green energy
RAID battery
Strategic Marketing Engineering
Group May#13-33
Wireless chargingWireless recharged battery
Strategic Marketing Engineering
Group May#13-33
Battery management
wire connectinductor
Wireless chargingInvisible implant to table
Strategic Marketing Engineering
Group May#13-33
Our ideasWireless charging
Green energy
RAID battery
Strategic Marketing Engineering
Group May#13-33
Kinetic EnergyKERS(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
Strategic Marketing Engineering
Group May#13-33
KERS ideaStrategic Marketing
EngineeringGroup 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
Strategic Marketing Engineering
Group May#13-33
Hot News!At April 5, 2013, Fisker Automotive, a
producer of hybrid cars, has laid off most its employees and is exploring bankruptcy.
Our ideasWireless charging
Green energy
RAID battery
Strategic Marketing Engineering
Group May#13-33
RAID controller batteryWhat 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 Upgrade512MB 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 SystemOne 1200mAh lithium ion battery
One year lifetime
Backup for up to 72 hours
Strategic Marketing Engineering
Group May#13-33
Motivation for RAID controller
Customer complaints
Servers need to keep working
Large market potential
Strategic Marketing Engineering
Group May#13-33
Existing System vs. Our Design
VSExisting
Proposed
Improvements
WWR (Working While Replacing)
BRM (Battery Relaxation Mode)
LFME (Line Failure Mode Enhancement)
Our designA 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
Strategic Marketing Engineering
Group May#13-33
Chips we useBattery 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.
Strategic Marketing Engineering
Group May#13-33
Proposed designStrategic Marketing
EngineeringGroup May#13-33
Cyclone-13-33Smart System
Three main componentsThermal protectorSmart controllerLifetime fuel gauge
Strategic Marketing Engineering
Group May#13-33
Thermal ProtectorMonitor temperatureAlarm system
◦ Temperature range from 25 ℃ to 55 ℃◦ Alarm on in unusual mode ◦ Pins for fans
Strategic Marketing Engineering
Group May#13-33
Smart controller
Induce charge/discharge cycling
Control switches
Maintain operation during battery replacement
Strategic Marketing Engineering
Group May#13-33
Model One(DRC cycling):Strategic Marketing
EngineeringGroup May#13-33
The DRC cycling for years
Detail of DRC cycling
Model Two(Benefit of DRC):
Strategic Marketing Engineering
Group May#13-33
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 GaugeDetected the current in the circuits
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
Strategic Marketing Engineering
Group May#13-33
Challenges 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
Strategic Marketing Engineering
Group May#13-33
Conclusion Some ideas are not practical (For
us)Make improvement on the RAID
batteryMarketing engineer
◦Need to understand all technology of existing products
◦Have a sense of what is the marketing trend
Strategic Marketing Engineering
Group May#13-33
Questions?Strategic Marketing
EngineeringGroup May#13-33
Thanks for listening!
Strategic Marketing Engineering
Group May#13-33
Project Schedule
1• Understand TI’s existing battery management products.
2• 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• Presenting/consultation ideas with TI and come up with
a final idea.
6• Try to come out a new product which can be applied into
an existing and developing markets.
Strategic Marketing Engineering
Group May#13-33
Future workExplore use less battery to keep
the system working for 72 hours (apply “Relaxation Phenomena”)
Use the all-solid-state Lithium Secondary Battery
Strategic Marketing Engineering
Group May#13-33
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.
TPS2419Strategic Marketing
EngineeringGroup May#13-33
TPS2419Strategic Marketing
EngineeringGroup May#13-33
BQ27425Strategic Marketing
EngineeringGroup May#13-33
BQ241161Strategic Marketing
EngineeringGroup May#13-33
Rest recover for lithium ion battery
Strategic Marketing Engineering
Group May#13-33
One charging/discharging cycle
Strategic Marketing Engineering
Group May#13-33
Reliability Calculation 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 = 1080mAh1080/1200 * 72h = 64.8 h
Total capacity and time that can be used during rest:60% * 600mAh + 600mAh = 960mAh960/1200 * 72h = 57.6 h
Strategic Marketing Engineering
Group May#13-33
Reliability CalculationPercentage 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
72h64.8h57.6h
Strategic Marketing Engineering
Group May#13-33
BQ500210EVM-689
Input maximum 20V
Thermo cutoff