|
|
|||||||
| Home Page |
|||||||
Assessment of Battery Smart and Pulse ChargingThe rapid growth of battery systems for portable power of computers, communications devices, tools and entertainment devices has created a need for better batteries and better electronics for charging these batteries. Although there are some forces decreasing the electrical load on batteries such as the use of 3.3V CMOS logic instead of 5V TTL logic, there are other forces increasing the electrical load, including faster clock speeds on microprocessors that require higher currents. There is the need for longer operating time on each discharge and a longer battery cycle life to amortize the initial battery cost. Smart battery charging allows faster charging, improvement of the battery cycle life and in many cases, allows the battery user to monitor the battery state of charge. Smart charging involves implementing basic charging methods, such as constant current or constant potential, and adding the measurement of parameters, such as temperature, voltage and current in the battery during charging. The data is used in a feedback loop to determine what the charger does to optimize the charge cycle, or to protect the battery and the user from harm. The advantage of smart charging is that the battery is charged much more quickly without undercharging or overcharging. It is important to consider battery chemistry when developing charger systems. Guideline believes that lithium-based batteries will continue to evolve to fill many, but not all, market niches. Lithium battery chargers require redundant safety systems to prevent fires. These systems must include monitoring of temperature and voltage, along with watchdog timers. For lower energy density requirements, NiCd and NiMH will be predominant. For some market niches, small sealed lead-acid cells will be the best choice. For very small, very specialized markets, a variety of different batteries are available, including zinc-air, aluminum-air and silver-air. In Guideline's opinion, successful smart battery charging systems depend on incorporating the smart charging chip into the battery pack itself. This means that battery parameters are measured at the source and simpler chargers can be produced to implement the charge regime called for by the chip on the battery. Any smart charging product should conform to the de facto smart battery standards jointly developed by Intel and Duracell. Pulse charging is a controversial topic in the field of battery charging. It has been shown empirically to be effective in charging some batteries faster and may extend the life of a battery. Teltech feels that there are benefits to pulse charging. However, the electrochemical mechanisms behind pulse charging are not understood and none of the available pulse charging techniques have been optimized. Patents and products have been developed by small companies without the resources to thoroughly evaluate their processes. The reputation of pulse charging has suffered as a result. A multidisciplinary study sponsored by a major player is needed and, potentially, government funding.
Rate this Article:
Current: 0 / 5 stars - 0 vote(s).
Article Tags: Batteries, Battery, Smart Charging, Pulse Charging, Charging Article Source: http://www.articlesbase.com/electronics-articles/assessment-of-battery-smart-and-pulse-charging-49949.html About the Author:
This is a summary of an annual strategic report on aluminum anodizing technology written by Guideline staff and experts. For more information please visit us at www.intota.com, or contact Brian Reuter, Director of Product Realization, breuter@guideline.com.
Related ArticlesBattery Charging Instructions for Extending Battery Life Hp Laptop Batteries Power Tool Battery Care Replacement Battery Shop UPS Batteries Could Be a 'Lifesaver'! Getting the Most from your Laptop Battery A Guide to Mobility Beds Voltage and Amperage for Replacement Batteries Got a Question? Ask.Ask the community a question about this article:Frequently Asked Questions Is this a virus Logic Board I have a HP laptop computer and I have the ... Installing leopard Freeze Free monitor giveaway?????????? Latest Electronics ArticlesCheap Digital Cameras- What Do You Really Need? Changing Your Washing Techniques with Technology Solar Christmas Lights For Trees and Holiday Lighting Cheap Split Ac: Stay Away From Scorching Summer Heat, Stay Comfortable Xbox 360 Console: a Perfect Companion If Your Dishwasher Breaks Just Throw it Away Dishwashers Could Be One of the Greatest Inventions What Is The Best Digital Camera On The Market? More from Brian ReuterAerospace Advanced Composites in Automobiles What Is Bulk Metallic Glass? Daubert Having Little Effect on Expert Witness Consulting Product Focus: Passive Radio Frequency Identification Radio Frequency Welding of Plastics Surface Treatment of Polypropylene Films for Printing and Coating Current State of Joint Integrity Technology for Threaded Fasteners Moving From Round to Flat in Automotive Wire Harnesses |
|||||||
|
Article Categories
|
|||||||
|
|
|||||||