Ultracapacitor Product Guide
Ultracapacitor Design Guidelines & Sample Applications (Smart Power Meters & Hybrid Drive Systems)
Web Seminar Archive: Guidelines on How to Design-In Ultracapacitors into your Applications
Maxwell Technologies BOOSTCAP Ultracapacitors are an innovative
energy storage technology ideally suited for applications needing
repeated bursts of power for fractions of a second to several
minutes. They pack up to 100 times the energy of conventional
capacitors and deliver ten times the power of ordinary batteries.
To make power available when needed by the application, the
BOOSTCAP ultracapacitor "caches" power from any energy source. This
power is then discharged from the ultracapacitor at rates demanded
by the application. The ultracapacitor can be repeatedly charged and
discharged at rates optimized for the application.
Using BOOSTCAP ultracapacitors for power bursts maximizes the
life and efficiency of the system's energy source. The
ultracapacitor allows the entire system to be tailored to optimally
meet both power and energy requirements.
High-powered energy storage for high-powered designs
- Power quality
- Renewable energy
- Consumer electronics
Portable product design specifications increasingly call for
smaller, lighter-weight products with more features packed into
tighter spaces. Often, they also need more burst power. But sizing
batteries for peak power requirements often compromises the desired
space and weight specifications. BOOSTCAP ultracapacitors allow the
designer to maximize performance.
Immediate, reliable power for ensuring power quality
Power quality applications require instantaneous, reliable
ride-through power. BOOSTCAP ultracapacitors kick in immediately,
holding power levels until power returns, or bridging the time gap
between an electrical interruption and the start-up of a backup
system. Using batteries for such rapid, deep-cycle power demands is
harmful to the battery. To ensure constant readiness, batteries in
this application will incur significant maintenance and replacement
Efficient balance of Power and Energy
In hybrid or pure electric vehicle applications, BOOSTCAPs
provide supercharging power for accelerations or climbing. With its
quick recharge capability, BOOSTCAPs will capture regenerative
braking energy, extending the range of the vehicle.
A uniquely advanced power technology enabling advanced,
The BOOSTCAP ultracapacitor is a double-layer capacitor
incorporating a unique metal/carbon electrode and an advanced
non-aqueous electrolytic solution. As a potential is applied across
the terminals, ions migrate to the high surface area electrodes. The
combination of available surface area and proximity to the current
collector provide an ultra-high capacitance for this electrostatic
Highest cycle life
Its charging process is highly reversible, enabling a BOOSTCAP
ultracapacitor to be cycled hundreds of thousands of times,
delivering high-power energy throughout the lifetime of most
Highest power density
Independent performance tests have confirmed that Maxwell's
BOOSTCAP technology packs more than twice the power density of
ordinary ultracapacitors and exceed the U.S. Department of Energy's
near-term goals for specific power and energy storage.
Added value, lower warranty costs
Products incorporating BOOSTCAP ultracapacitors realize lower
warranty and service costs. When used to improve the effectiveness
of battery-based systems, ultracapacitors can shrink the volume of
batteries required and reduce the frequency of battery replacement.
Any application which has variable power requirements can benefit
from the BOOSTCAP ultracapacitor's ability to "cache" power to meet
demands. While the primary energy storage device continues to meet
ongoing low power requirements, the ultracapacitor is available to
supply peak power needs. The BOOSTCAP ultracapacitor is capable of
accepting a charge as quickly as it is discharged, allowing it to be
charged via high rate charging, through the capture of regenerative
braking energy, or simple trickle charging. This flexible
"opportunity charging" allows the system designer to make best use
of his energy sources.
Maxwell's Booscap ultracapacitors allow for advancements and
capabilities never before possible in numerous products and
applications in a wide range of industries. Virtually any design
calling for a mixture of high and low power loads can take advantage
of the benefits of BOOSTCAP ultracapacitors.
A tool to achieve the design advantage
Numerous advantages are realized when BOOSTCAP ultracapacitors
are used to manage peak power requirements and the battery is used
for continuous low power. Sizing the battery for energy rather than
power frees space for adding new features. Reserving the battery for
low power requirements will also allow the use of lower cost battery
When used to meet peak power requirements, BOOSTCAP
ultracapacitors enable the other power sources to operate more
efficiently whether it's a fuel cell, battery, or combustion engine.
Ultracapacitors ensure that sensitive equipment continues to
operate in harsh power quality environments. Providing a store of
available energy, ultracapacitors support UPS systems, equipment
ride-through applications, and bridge power to a generator start-up.
Electrostatic technology provides improved safety and design
Since BOOSTCAP ultracapacitors store energy electrostatically,
but do not generate energy, they can be stored completely discharged
with no risk of accidental discharge during shipment, storage,
assembly, or maintenance. Additionally, there is no danger due to
Make best use of available space
BOOSTCAP ultracapacitors can be installed in any convenient
orientation. A variety of available cases and terminal connections
provide the designer with the most efficient use of space.
Provides reliable indication of available energy
BOOSTCAP technology takes the guesswork out of power storage.
Since the energy stored is directly related to the voltage, the
amount of available energy can be easily monitored.
This precision eliminates the need for sophisticated
state-of-charge algorithms, which at best only approximate a
battery's remaining available energy.
Scaleable to meet energy and voltage requirements
Whether you're designing products that fit in the palm of your
hand, inside a car, or that backup major power grids, Maxwell
Technologies' BOOSTCAP ultracapacitors will add value to your
application. BOOSTCAP ultracapacitors are modular and stackable,
easily configured to cost-effectively match voltage and energy