Capacitor energy storage and capacitor energy storing device including the same

Abstract

A storage capacitor comprises an energy storage capacitor and a temperature control circulating device connected therewith, the energy storage capacitor includes a box body, a box cover and a plurality of ceramic capacitor units, wherein the box cover is in sealed connection with the box body, the ceramic capacitor units are arranged in the box body, the dielectric strength of liquid filled in the box body is over 20KV / mm, the ceramic capacitor unit is provided with a plurality of negative plates and positive plates, and the negative plates or the positive plates are provided with a plurality of protrusions. The liquid of high dielectric strength is filled among the negative plates and the positive plates inside the box body, thereby the electrode plates do not break down and self-discharge easily under high tension temperature, and additionally, the temperature in the box body can be controlled through the circulating liquid, thereby guaranteeing the storage capacitor to work under optimal working environment.

Description

technical field [0001] The invention relates to a capacitive energy storage device and a capacitive energy storage device using the capacitive energy storage device. Background technique [0002] Existing electrical energy storage includes electrochemical storage batteries, ordinary capacitors, supercapacitors, etc. [0003] Among them, electrochemical batteries (referred to as batteries) use the principle of redox reaction of substances to store energy. The disadvantages are that the working voltage of a single battery is low, the charging time is long, and the cycle life is short. Some batteries use acid electrolyte, which will cause danger and harm if leaked Environmental pollution, etc. [0004] Ordinary capacitors are components that store electrical energy by absorbing charges through physical processes, and are more and more widely used in electronic equipment and products. Compared with traditional storage batteries, capacitors have the advantages of short charging...

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Problems solved by technology

[0007] 1. Since the normal working environment of the capacitor accumulator is relatively complicated, if it is used in a humid and dusty environment, it is easy to generate self-discharge between the positive and negative plates and cause the stored electric energy to be lost; and if there is water on the surface of the plates Steam and dust will seriously affect its surface heat dissipation, and breakdown and spontaneous discharge may occur between the positive and negative plates, resulting in the loss of stored electrical energy

[0008] 2. The working current of this high-power capacitor energy storage device can reach several hundred amperes at most. The dielectric loss and line loss during use will cause a large amount of heat to be generated inside the capacitor energy storage device. When the temperature exceeds 80°C, it will Destroy the normal operation of the capacitor accumulator; if it is used in a low temperature environment of -40°C, the dielectric constant of the capacitor accumulator is much lower than the dielectric constant of the internal capacitor material, and the capacitance value decreases, resulting in lower energy storage than normal temperature The energy that can be stored at the same time affects the normal operation of the capacitor energy storage

[0009] 3. If the capacitor energy storage is used as the power supply of electric vehicles, the internal high-insulation material must ensure that the capacitor energy storage can be used reliably under high voltage, and once an accident occurs, the shell ruptures, and the internal high-voltage electrodes will be exposed. , will lead to security issues

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