6pcs

【Brand】 ： Panasonic / Panasonic

【Factory】: Japan

[Volume]: 6.8 * 1.8 (mm) diameter * thickness

Fara capacitor introduction:

Farad capacitor is an electric double layer capacitor. It is the largest type of electric double layer capacitor that has been put into mass production in the world. Its basic principle is the same as that of other types of electric double layer capacitors, which are composed of activated carbon porous electrodes and electrolyte The electric double layer structure obtains super large capacity.

 

Features of super capacitors:

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

(2) The cycle has a long service life, and the number of deep charge and discharge cycles can reach 1 to 500,000 times. There is no "memory effect" and there is no problem of excessive discharge;

(3) The high current discharge capability is super strong, the energy conversion efficiency is high, the process loss is small, and the high current energy cycle efficiency is ≥90%;

(4) High power density, up to 300W / KG ~ 5000W / KG, equivalent to 5 ~ 10 times of battery;

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

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

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

(8) Convenient detection, the remaining power can be read directly;

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

The super capacitor can be made into a super capacitor module, which is suitable for high capacity needs.

Disadvantages:

(1) At present, the withstand voltage of supercapacitors is not high. The overvoltage protection circuit is indispensable in actual use. Some people often connect two or more super capacitors in series to access a high-voltage environment. This approach is wrong. Because with the leakage of the capacitor, and the quality of the capacitor is not the same, it is easy to cause the phenomenon of local cell overcharge and breakdown after multiple charge and discharge in the later period.

(2) After all, the super capacitor is not a battery, and there is a problem that the voltage gradually decreases with discharge, so a more complicated output circuit is required.

application

◆ The low impedance of the farad capacitor is essential for many high power applications today. For fast charging and discharging, the small ESR of the farad capacitor means greater power output. [1]

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

Application examples

1. Fast charging application, charging in seconds and discharging in minutes. For example, electric tools, electric toys;

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

3. Applied to energy 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, continuous discharge for a long time, such as computer memory backup power supply;