Super-capacitor energy storing device

Abstract

A super-capacitor energy storing device comprises multiple series-connected super-capacitors and single super-capacitor protective circuits in parallel connection with each of the super-capacitors. Each single super-capacitor protective circuit consists of a voltage-sharing circuit and an overvoltage alarm circuit. The voltage-sharing circuit is in parallel connection with the overvoltage alarm circuit. The voltage-sharing circuit is used for stabilizing voltages at two ends of each of the super-capacitors in parallel connection with the voltage-sharing circuit and enabling the voltages at two ends of each of the series-connected super-capacitors to be consistent. The overvoltage alarm circuit is used for giving out an alarm and outputting an alarm signal when detecting that the voltages exceed the limit. The single super-capacitor protective circuits can independently achieve voltage sharing and overvoltage protection of each single super-capacitor. The overvoltage alarm circuit is arranged in each single super-capacitor protective circuit, so that production workers can know the circuit working situation according to the existence situation of alarm information in real time. The super-capacitor energy storing device is simple in circuit structure, reliable in working and easy to obtain.

Description

technical field [0001] The invention relates to an energy storage device, in particular to a supercapacitor energy storage device. Background technique [0002] A supercapacitor is an electrochemical component, which is between a traditional capacitor and a battery. It is a power source with special properties. The supercapacitor mainly relies on the electric double layer and redox capacitance to store electrical energy. It is composed of activated carbon porous electrodes and electrolytes. The electric double layer structure has a large capacity and can be repeatedly charged and discharged hundreds of thousands of times. It has the characteristics of high power density, short charge and discharge time, long cycle life, and wide operating temperature range. [0003] The voltage of a single supercapacitor generally does not exceed 3V, and the energy is small. Therefore, a plurality of capacitors are generally used in series to form the required energy storage device to improv...

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Problems solved by technology

[0003] The voltage of a single supercapacitor generally does not exceed 3V, and the energy is small. Therefore, a plurality of capacitors are generally used in series to form the required energy storage device to improve the energy storage of the energy storage device. The existing supercapacitor energy storage device cannot be based on It is necessary to expand the number of series capacitors, it is difficult to realize the voltage equalization and overvoltage protection of each supercapacitor in the capacitive energy storage device, and it does not have the overvoltage alarm capability, which reduces the safety of the supercapacitor energy storage device in the application process and reliability

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