 |
 |
|
|
| White Papers |
Do you have a White Paper that you would like posted on this page?
Contact Shannon Given at shannong@infowebcom.com or at 720-528-3770. |
Portable Batteries |
The Economic Benefits of Long Cycle Life
Long battery cycle life significantly improves user productivity, reduces replacement costs, and delivers lower cost of ownership.
Boston-Power
What Does it Mean to be Green?
Increased environmental awareness and more stringent environmental legislation are
causing businesses and consumers to seek out eco-friendly products and solutions in
their everyday lives. Green products help preserve non-renewable resources for future
generations and help safeguard the environment by preventing toxic materials from
entering the ground and contaminating food and water supplies.
Boston-Power
Common Mistakes in Battery Pack Development (And How to Avoid Them)
A few oversights can turn your battery project a nightmare. Here is a list of commonly made
mistakes to keep in mind to ensure your project goes as smoothly as possible.
Rose Electronics
Selecting Cell Chemistries for Your Portable Battery System
Three cell chemistries currently dominate the growing portable application market: Nickel-Metal Hydride (NiMH), Lithium Ion (Li-Ion), and Lithium Polymer (Li-polymer). While all of these chemistries can address the high power demands of portable applications—handheld scanners, medical life-saving equipment, and consumer electronic devices—each has unique characteristics that make it appropriate, or inappropriate, for a particular portable device.
Micro Power Electronics
Smart Battery
This white paper gives an introduction to the most usual tasks performed by the Smart Battery application, and the resulting requirements for a Smart Battery MCU. This white paper does not go into details regarding the various Smart Battery definitions, but rather make this a simple to the point introduction from a design point of view.
Atmel
Intelligent Design for Portable Applications
Fueled by industry and consumers, marketplace demand is skyrocketing for high-power portable instruments and equipment. In the healthcare and field-service industries, for example, companies hope to increase productivity, competitiveness and customer service by implementing the use of portable electronic devices into many daily business operations. To address this rising demand, electronics manufacturers are leveraging faster processors, enhanced color displays and backlighting, wireless networking, as well as voice and multimedia capabilities for next-generation portable devices. But the transition to highly sophisticated, power-hungry portable electronic systems in smaller, lighter, more ergonomic packages is creating new battery system-design challenges.
Micro Power Electronics
Upgrading from Older Battery Technologies to Lithium Ion (Li-Ion) Systems
Battery systems are no longer simply a collection of isolated components, but a complete electro-mechanical structure that plays an integral role in the function of a portable device. Yesterday’s “dumb” battery system typically consisted of the battery cells, safety components, and a physical enclosure. Today, more sophisticated and advanced power systems are available. The term “Smart” battery systems are in common use.
Micro Power Electronics
|
Stationary Batteries |
Thermal Runaway in Flooded Lead Calcium Batteries
In its most basic definition, thermal runaway is the internal generation of heat at a higher rate than a
battery can dissipate. This heat can result in temperatures so high that the battery will be completely destroyed. The active material of the battery will be chemically damaged, thus necessitating replacement. Also, thermal runaway can result in melting of the plastic components of the battery, in releasing of undesired acidic and combustion gasses and possible heat, smoke and acid damage to adjacent equipment.
Alber
Battery Technology for Data Centers and Network Rooms: Battery Options
The lead-acid battery is the predominant choice for Uninterruptible Power Supply (UPS)
energy storage. Over 10 million UPSs are presently installed utilizing Flooded, Valve
Regulated Lead Acid (VRLA), and Modular Battery Cartridge (MBC) systems. This paper
discusses the advantages and disadvantages of these three battery technologies.
American Power Conversion
Are Your UPS System Batteries Really Ready to Load Test?
In a critical power application, stationary batteries should be properly installed, inspected, commissioned and tested before being placed into full service. Unfortunately, some installers hurry through inspections and the load test is performed before the batteries are properly prepared. This paper outlines the correct way to prepare batteries for load test and explains the importance of each step.
Liebert
Battery Technologies for Data Centers and Network Rooms: Environmental Regulations
While most commercial battery back-up systems fall below government-required reporting
levels, very large UPS and DC plant batteries may have to comply. Failure to comply can
result in costly penalties. For lead acid batteries, environmental compliance focuses on the
amount of sulfuric acid and lead at a particular location. Power ratings for VRLA batteries
and modular battery cartridges are much higher than for flooded batteries at the same
reporting threshold. This paper gives a high level summary of the regulations and guides
the reader to sources of full information.
American Power Conversion
Battery Technology for Data Centers and Network Rooms: Safety Codes
Fire safety regulations and their application to UPS battery installations are reviewed. In
some cases, fire codes do not clearly recognize improvements in battery safety resulting
from changing battery technology. Valve Regulated Lead Acid (VRLA) batteries are
frequently deployed within data centers and network rooms without the need for the
elaborate safety systems that are required for Vented (Flooded) Lead Acid batteries. Proper interpretation of the fire codes is essential in the design and implementation of data centers and network rooms.
American Power Conversion |
Automotive Batteries |
The Tesla Roadster Battery System
This paper provides details about the design of the Tesla Roadster’s lithium-ion (Li-ion) battery pack (otherwise known as the ESS, or Energy Storage System) with a particular focus on the multiple safety systems, both passive and active, that are incorporated into the pack. This battery pack has been under development and refinement for over three years and is the cornerstone of the Tesla Roadster. The high level of redundancy and multiple layers of protection in the Tesla Roadster battery pack have culminated in the safest large Li-ion battery that we or many of the experts in the field, with whom we’ve consulted, have seen.
Tesla Motors, Inc.
New Battery for Electric Cars
A new battery has been developed especially for electric cars and is designed to replace Nickel-Metal Hydride and Lithium-Ion Batteries now being tested by major auto-makers.
Apollo Energy Systems, Inc.
The 21st Century Electric Car
The electric car, once the “zero-emissions” darling of environmentalists, is sometimes maligned as an “emissions-elsewhere” vehicle, since the electricity to charge its batteries must be generated in electrical generation plants that produce emissions. This is a reasonable point, but we must then ask how much pollution an electric car produces per mile – accounting for all emissions, starting from the gas or oil well where the source fuel is extracted, all the way to the final consumption of electricity by the car’s motor. When we work through the numbers, we find that the electric car is significantly more efficient and pollutes less than all alternatives.
Tesla Motors, Inc. |
Charging & Testing |
Negative Pulse Charging: Myths and Facts
Fast charging of industrial batteries is poised to become a main stream charging technology due to the operational savings and the increased productivity and safety that this technology offers. Users are realizing the benefits of fast charging as fast charge systems are already buzzing at manufacturing plants and distributions centers all around the US.
PowerDesigners, LLC |
IC's & Semiconductors |
Safety Circuit Qualification and Testing for Li-Ion Batteries
Battery safety circuits are designed to provide protection for battery packs consisting of 1 or more cells in series. These circuits monitor voltage and current, and can interrupt the circuit in the event of a potentially damaging condition. In the most common safety circuits, this is accomplished by using a pair of MOSFET switches in series, one MOSFET for charging, and one for discharging. Each MOSFET contains an internal diode across the output. This diode is reverse biased to the intended direction of current. The diodes allows charging when the discharge FET is open, and discharging when the charging FET is open. Each cell (or groups of cells) in series is monitored by the protection circuit. The individual cells are checked for over voltage during charge or under voltage during discharge.
Micro Power Electronics |
Power Supplies |
Electronic Power Systems - Tradeoffs Between Single-Phase and Three-Phase Power
Modern Electronic Systems are quite often powered from a three-phase power source. While utilizing power modules that operate directly from three-phase power might seem to provide optimal simplicity and flexibility, the added complexity required to realize three-phase power factor corrected circuitry usually negates any potential savings. This paper compares single-phase and three-phase circuits from the component count, stress level and complexity standpoints. It demonstrates that when these items are taken into account, quite often the best choice is a combination of single-phase modules, configured to balance individual power line phases.
Transistor Devices
The Effect of Regular, Skilled Preventive Maintenance on Critical Power System Reliability
As organizations become increasingly dependent on data center systems, there
is a need for greater reliability in the critical power system. For many organizations, the IT infrastructure has evolved into an interdependent business-critical network that includes data, applications, storage, servers and networking. A power failure at any point along the network can impact the entire operation and have serious consequences for the business.
Emerson Network Power
|
Battery Components |
Ultracapacitor Applications in the Power Electronic World
There has been a lot of progress in control and motor design, due to the increasing power demand in electric applications, as well as ongoing pressures for more environmentally friendly and high efficiency solutions. However, designers and engineers have not been successful with regard to the electric power storage systems. This is due primarily to the fact that batteries are used to provide the power peaks in most of the currently developed solutions relying on a power storage system. The deficiencies of battery storage systems are many and they create a variety of design challenges for engineers. Batteries have a poor low-temperature performance, a very limited lifetime under extreme conditions - resulting in repeated replacement throughout the life of the system - and they are not designed to satisfy the most important requirements of power sources: To provide bursts of power in the seconds range over many hundreds of thousands of cycles.
Maxwell Technologies, Inc. |
|
|
|
© 2010 Webcom Communications Corp. |
