We all want to see smart devices that can fully charge their batteries within a minute or two and stay powered up all day or longer. This same consumer desire is driving automakers to work on energy storage systems that enable electric vehicles to charge as quickly as a traditional car can fill its gas tank, to fully absorb recuperative braking energy in the few seconds it takes to heed a stop sign, and to provide hundreds of miles of range between charges. Both capacitor and battery manufacturers are pursuing ways to store more energy without sacrificing power capability and to provide higher charge and discharge rates without sacrificing stored energy. For now, though, these are incomplete, ongoing quests.
Maxwell's HC Series portfolio of products.
The reality is that individually, batteries or capacitors can be optimized for the best energy or power performance possible with a given chemistry, but energy is ultimately compromised to gain power and vice versa. Today's answer to power and energy needs in applications should be to use the best of both in combination with each other: batteries and capacitors together. Some day, there will be a mass-market device that delivers both high power and long runtime in the same package. Right now, such a solution does not exist.
So when you read that there is such a device, ask the questions that can reveal the real situation. Can it be done affordably? Does it really work as described? How did this device solve this highly complex problem, which has been around since the dawn of energy storage? Does the solution even seem reasonable? If the answer to all of these questions is "yes," then we have arrived. Until that time, look for energy from batteries and power from capacitors, and when an application demands both, use both.
Care to tell me what the cost of a simple Kwhr of storage with Maxwell supercaps is?
Facts are SC will never be used for anything but very short pulses of power. Nor do they mention the expensive electronics needed to produce that power to a load because to get it's full power, a cap/SC needs to go from full voltage to 0 volts so not only are SC ungodly expensive themselves but expensive to use.
And there are batteries like A123 that over 1 minute output easily creams SC's output by I bet 1,000x's of the cost. Even in the 1 second range A123 beats them in practical operations.
Even lead batteries/Bolder type beat SC's hands down on specific power of any length.
The engineers and inventors of the post WWII period turned their attention to advancements in electronics, communication, and entertainment. Breakthrough inventions range from LEGOs and computer gaming to the integrated circuit and Ethernet -- a range of advancements that have little in common except they changed our lives.
The age of touch could soon come to an end. From smartphones and smartwatches, to home devices, to in-car infotainment systems, touch is no longer the primary user interface. Technology market leaders are driving a migration from touch to voice as a user interface.
Soft starter technology has become a way to mitigate startup stressors by moderating a motor’s voltage supply during the machine start-up phase, slowly ramping it up and effectively adjusting the machine’s load behavior to protect mechanical components.
A new report from the National Institute of Standards and Technology (NIST) makes a start on developing control schemes, process measurements, and modeling and simulation methods for powder bed fusion additive manufacturing.
If you’re developing a product with lots of sensors and no access to the power grid, then you’ll want to take note of a Design News Continuing Education Center class, “Designing Low Power Systems Using Battery and Energy Harvesting Energy Sources."
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