Apr. 26, 2024
Supercapacitors store energy through polarization of electrolytes without undergoing chemical reactions. Additionally, the energy storage process is reversible, allowing supercapacitors to be charged and discharged hundreds of thousands of times. The primary difference between a Farad capacitor and a conventional capacitor lies in their capacitance. While conventional capacitors typically have a capacitance ranging from 10,000 to 40,000 microfarads, supercapacitors can reach capacities of several thousand farads. Since 1 farad equals 1 million microfarads, supercapacitors are also known as Farad capacitors.
Positioned between batteries and capacitors, supercapacitors with their significant capacity can effectively function as batteries. This article explores the application of supercapacitors as energy storage devices in both industrial and consumer electronics.
Industrial Electronics
In traditional smart water meters, the common method for controlling water valve opening and closing is by using built-in lithium batteries. However, after a certain period of use, lithium batteries may no longer provide sufficient energy to power the control circuit, necessitating battery replacement. This process poses risks, as unreliable valve closure may result in billing inaccuracies or water leakage. Therefore, supercapacitors can be encapsulated within water meters and supplemented with external dry batteries for power supply. During normal operation, the dry batteries provide the energy required for the water meter circuit and charge the supercapacitors. When it's necessary to open the water valve, the system first checks whether the supercapacitors have stored sufficient energy. If not, the valve remains closed. When the system detects adequate energy stored in the supercapacitors, the external dry batteries provide the energy to open the valve. Similarly, when it's time to close the water valve, if the external batteries fail to supply the required energy, the supercapacitors step in to provide the energy for valve closure. This setup functions like a water reservoir, storing water during normal times and supplying it when needed during water shutdowns.
Consumer Electronics
In electronic toys, which typically operate for no more than 10 hours and often require high instantaneous currents, batteries may not suffice. Combining supercapacitors with batteries can solve this issue. Supercapacitors can also serve as power sources for electronic toys, reducing costs and weight.
This article is provided by JYH HSU (JEC) Electronics. JEC is a research, development, production, and sales-oriented company specializing in manufacturing and selling various electronic components such as capacitors and resistors.
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