New Battery Technologies Webinar
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DELIVERING QUALITY SINCE 1952. New Battery Technologies 4.28.13
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Epec has become one of the industry leaders in the design, development and production of high-tech custom battery packs and portable power solutions. As part of our service to our customers we pride ourselves in keeping them informed of new technologies, products and techniques. Watch our webinar as we review advances in new battery technologies and the integration of proven embedded sub-systems that can provide feature-rich enhancements, potentially enabling new advancements and features in your products while reducing time-to-market and development risks. We then explain how these technologies can be incorporated into all different types of devices. Finally, we cover the design considerations, benefits, and trade-offs in implementing these new technologies.
Transcript of New Battery Technologies Webinar
DELIVERING QUALITY SINCE 1952.
New Battery Technologies
4.28.13
2
Topics Covered
Advances in new battery technologies is relatively new – A short walk through history
New battery technologies require electronic safeties opening the door to added value electronics.
The embedded added-value electronics covered are: – Embedded Battery Chargers – Wireless power (charging)– System output power options– Fuel gauging– GPIO options
(General Purpose Inputs Outputs)
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History/Background
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Energy Density Increase
Cell’s energy density has increased over the years making them more volatile.
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Why Add Electronics to Batteries?
Required Electronics on New Chemistries: Energy density has increased with each advancement in chemistry
making cells less stable. Requiring:– Safety circuits – Cell balancing– Secondary safeties
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Why Add Electronics to Batteries?
Added Value Electronics: Today’s batteries can now be viewed more as power systems/power
supplies than batteries.
These battery systems can now include:– Embedded battery chargers– Unregulated Input Power– Wireless power (charging)– System output power– Fuel gauging– GPIO options
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Added Value Electronics:Embedded Chargers
With an embedded charger, unregulated power can be used to charge the internal battery from a number of sources: inexpensive wall bricks, car cigarette adaptors,UBS ports…
Advantages: – Increased Battery Life: The cells are always properly charged under all environmental
conditions.– Unauthorized battery chargers are unlikely to damage the battery.– No need for external chargers. – Perceived simpler solution by end user.
Disadvantages: – Increased initial cost, which may be negated with increased battery life.– Functioning charger circuitry is discarded at the end of battery life.
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Added Value Electronics:Wireless Power (charging)
Using the Qi (inductive power standard), Epec can embed wireless charging electronics in your battery to work with off-the-shelf wireless charging Pads that already exist, or develop a custom pad for your product.
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Added Value Electronics:System Output Power
System output power can be provided while charging the battery
Charging can be suspended during high-system demands to reduce wall brick size requirements
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Added Value Electronics:System Output Power (continued)
System output power can be regulated to provide constant voltages higher or lower than the battery voltage
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Added Value Electronics:System Output Power (continued)
System output voltage can be used in conjunction with the fuel gauge to adjust itself to signal the end-of-discharge making batteries backwards compatible with non-intelligent systems.
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Added Value Electronics:Fuel Gauging
Ways to Fuel Gauge:– Measure change in capacity
Voltage lookup – Coulomb counting – Combination of both
How is Accuracy Compromised?– Aging – Temperature
TI’s Solution:– Impedance track
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Added Value Electronics:GPIO Options
General Purpose Input/Outputs, GPIO can be used to control any battery subsystem or control end-product functions using a simple two-wire interface, I2C. Examples of these are:
Adjust battery charger current Turn LED indicators on and off Automated production BIT Read internal hardware status indicators Voltage monitoring Activate or switchover multiple
battery banks Adjust on-board voltage regulators as
needed by the fuel gauge or end product. Self-destruct to protect IP (military)
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Summary
Today’s batteries can offer embedded electronics, which improves the safety, reliability, cycle-life and functionality of the battery while giving the end-product system engineer more options to make the end-product more reliable and user friendly.
With embedded battery chargers, batteries last longer by charging them to their ideal specifications and only within proper temperature limits.
With accurate fuel gauges, batteries canbe discharged to almost empty withconfidence; hence, batteries do notneed to be oversized making themsmaller, lighter, and more dependable.
GPIO interface may provide access toinformation or functional control you hadnever thought possible.
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Build To Print Electronics
We are a leading provider of printed circuit boards, flex and rigid-flex circuits, membrane switches, touch panels, silicone rubber keypads, graphic overlays, custom battery packs, and electronic fans & motors.
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Q&A
Questions?– Enter any questions you may have
in the Control Panel.– If we don’t have time to get to it, we
will reply via email.
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Thank You
If you require additional information please contact us with any questions or requests.
North American Headquarters174 Duchaine Blvd.New Bedford, MA 02745Tel: (508) 995-5171Fax: (508) 998-8694
Contact Us By Email:Sales [email protected] [email protected] [email protected]
Visit Our Website For More Informationwww.epectec.com
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