The characteristics and application of Farad capacitors

Farad capacitors are called double-layer capacitors or gold capacitors by many electricians . This kind of capacitor has a long development time and has the characteristics of reversibility in the storage process. Let us introduceand applications of Farad capacitors .

　　The characteristics and application of Farad capacitors

　　feature

　　Features of super capacitors :

　　(1) The charging speed is fast, charging for 10 seconds to 10 minutes can reach more than 95% of its extra capacity;

　　(2) The cycle life is long, the number of deep charge and discharge cycles can reach 10,000 to 500,000 times, there is no "memory effect", and there is no problem of excessive discharge;

　　(3) The high-current discharge capacity is super strong, the energy conversion efficiency is high, the process loss is small, and the high-current energy cycle efficiency is greater than or equal to 90%;

　　(4) The power density is relatively low, about 2W/KG~3W/KG, which is equivalent to 1/5~1/10 of the lead-acid battery;

　　(5) The raw material composition, production, use, storage and dismantling process of the product are all pollution-free, and it is an ideal green and environmentally friendly power source;

　　(6) The charging circuit is simple, no charging circuit like a rechargeable battery is needed, and it is maintenance-free for long-term use;

　　(7) Good ultra-low temperature characteristics, wide temperature range -40℃~+70℃;

　　(8) The detection is convenient, and the remaining power can be directly read out;

　　(9) The capacity scale is usually 0.01F--1000F, and the withstand voltage is often low (a few volts to more than ten volts, and the newly announced ones are only more than twenty volts).

　　Supercapacitors can be made into supercapacitor modules , which are suitable for high-capacity requirements.

　　shortcoming:

　　(1) The withstand voltage of super capacitors is not high. In actual use, an overvoltage protection circuit is essential. Some people often connect two or more supercapacitors in series to access the high voltage environment. This approach is wrong. Due to the leakage of the capacitor, and the quality of the capacitor is not the same, it is easy to cause the phenomenon of partial cell overcharge and breakdown after repeated charging and discharging in the later stage.

　　(2) The super capacitor is not a battery after all, and there is a problem that the voltage gradually drops with discharge, so a more complex output circuit is required.

　　application

　　◆ The low impedance of Farad capacitors is essential for many of today's high power applications. For fast charge and discharge, the small ESR of the farad capacitor means more power output.

　　◆ Instantaneous power pulse application, short-term power support for important storage and memory systems.

　　Application examples

　　1. Fast charging application, charging in a few seconds and discharging in a few minutes. Such as power tools, electric toys;

　　2. In the UPS system, the supercapacitor provides instantaneous power output as a supplement to the backup power supply of the engine or other uninterrupted systems;

　　3. Apply to energy sources with sufficient energy and lack of power, such as solar energy;

　　4. Power support when the bus switches from one power source to another;

　　5. Small current, long-term continuous discharge, such as computer memory backup power supply;

　　The above content is the relevant content about the characteristics and use of Farad capacitors introduced today . If you want to know more about Farad capacitors, please pay attention to our official website!