Download - Strategic Marketing Engineering
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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
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Problem statement
What we have done◦ Background Information
◦ Ideas
Challenge
Conclusion
Strategic Marketing Engineering
Group May#13-33
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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
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Problem statement
What we have done◦ Background Information
◦ Ideas
Challenge
Conclusion
Strategic Marketing Engineering
Group May#13-33
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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
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Our IdeasWireless charging
Green energy
RAID battery
Strategic Marketing Engineering
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Wireless chargingWireless recharged battery
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Battery management
wire connectinductor
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Wireless chargingInvisible implant to table
Strategic Marketing Engineering
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Our ideasWireless charging
Green energy
RAID battery
Strategic Marketing Engineering
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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
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KERS ideaStrategic Marketing
EngineeringGroup May#13-33
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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
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Hot News!At April 5, 2013, Fisker Automotive, a
producer of hybrid cars, has laid off most its employees and is exploring bankruptcy.
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Our ideasWireless charging
Green energy
RAID battery
Strategic Marketing Engineering
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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)
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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
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A Typical RAID Battery SystemOne 1200mAh lithium ion battery
One year lifetime
Backup for up to 72 hours
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Motivation for RAID controller
Customer complaints
Servers need to keep working
Large market potential
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Existing System vs. Our Design
VSExisting
Proposed
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Improvements
WWR (Working While Replacing)
BRM (Battery Relaxation Mode)
LFME (Line Failure Mode Enhancement)
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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
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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.
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Proposed designStrategic Marketing
EngineeringGroup May#13-33
Cyclone-13-33Smart System
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Three main componentsThermal protectorSmart controllerLifetime fuel gauge
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Thermal ProtectorMonitor temperatureAlarm system
◦ Temperature range from 25 ℃ to 55 ℃◦ Alarm on in unusual mode ◦ Pins for fans
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Smart controller
Induce charge/discharge cycling
Control switches
Maintain operation during battery replacement
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Model One(DRC cycling):Strategic Marketing
EngineeringGroup May#13-33
The DRC cycling for years
Detail of DRC cycling
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Model Two(Benefit of DRC):
Strategic Marketing Engineering
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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
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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
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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.
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Problem statement
What we have done◦ Background Information
◦ Ideas
Challenge
Conclusion
Strategic Marketing Engineering
Group May#13-33
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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
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Problem statement
What we have done◦ Background Information
◦ Ideas
Challenge
Conclusion
Strategic Marketing Engineering
Group May#13-33
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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
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Questions?Strategic Marketing
EngineeringGroup May#13-33
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Thanks for listening!
Strategic Marketing Engineering
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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.
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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
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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.
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TPS2419Strategic Marketing
EngineeringGroup May#13-33
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TPS2419Strategic Marketing
EngineeringGroup May#13-33
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BQ27425Strategic Marketing
EngineeringGroup May#13-33
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BQ241161Strategic Marketing
EngineeringGroup May#13-33
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Rest recover for lithium ion battery
Strategic Marketing Engineering
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One charging/discharging cycle
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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
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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
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72h64.8h57.6h
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BQ500210EVM-689
Input maximum 20V
Thermo cutoff