Electric vehicle is a very convenient means of transportation for our daily travel. It is essential to charge the electric vehicle every day. Do you know how the battery in the electric vehicle stores electricity and energy? In fact, in the electric vehicle battery in parallel after the electrolytic capacitor can be stored.
電解電容的作用是：濾波、退耦、儲能、隔直流通交流等。在不同電路中有著不同的用途。不同的用途電容材料與容量的選擇也是不同的。
The function of electrolytic capacitor is: filtering, decoupling, energy storage, isolated direct current exchange, etc. It has different uses in different circuits. The choice of capacitance material and capacity is different for different purposes.
沒有發電機及時為電容充電，電容反而需要用電瓶來充電。理論上增加一個法拉電容可以提高電池放電電流，但是電動車電池放電電流已經足夠用了，沒有必要在增加放電電流。
There is no generator to charge the capacitor in time. Instead, the capacitor needs to be charged with a battery. Theoretically, adding a farad capacitor can increase the battery discharge current, but the electric vehicle battery discharge current is enough, there is no need to increase the discharge current.
何況電解電容都會存在漏電電流，反復的充放電，耗電量增加反而會縮短電動車續航里程。
Moreover, there will be leakage current in electrolytic capacitors. Repeated charging and discharging will lead to increased power consumption, which will shorten the driving range of electric vehicles.
即使在充電時電容可以儲存一定電量，但是電動車啟動后一瞬間電容內存儲電量就會耗光，然后電容充放電都取自電瓶，電瓶增加了額外消耗，加裝電容沒有意義。
Even when charging, the capacitor can store a certain amount of electricity, but after the electric vehicle starts up, the storage capacity of the capacitor will be exhausted. Then the charge and discharge of the capacitor are taken from the battery, which increases the extra consumption of the battery, so it is meaningless to add a capacitor.
利用電容儲能可以實現削峰填谷，在汽車改裝中可以用到。
It can be used in automobile refitting.
例如改音響，加裝大功率功放時可以用大容量電解電容。一般都裝在功放附近，可以滿足音響爆棚時對電流的要求，使瞬態反應更及時。這個電容就是起到了大水塘的作用，平時發電機為電容充電，電容會儲存電量。
For example, when changing the sound system and installing high-power power amplifier, large capacity electrolytic capacitor can be used. Generally installed near the power amplifier, it can meet the requirements of the current when the sound burst, making the transient response more timely. This capacitor acts as a big pond. Usually, the generator charges the capacitor and the capacitor will store electricity.
發電機猶如一個小排量水泵抽水，而功放瞬間大動態時相當與一個大排量水車。所以大動態時水泵供水量就會不足，這時候電容相當于一個大水塘，功放大動態時水塘開閘放水，滿足功放瞬間動態需求。
The generator is like a small displacement water pump to pump water, and the power amplifier is equivalent to a large displacement water wheel when it is in a big dynamic state. Therefore, when the power amplifier is in large dynamic state, the water supply of the pump will be insufficient. At this time, the capacitance is equivalent to a large pool. When the power amplifier is in large dynamic state, the reservoir will be opened to discharge water to meet the instantaneous dynamic demand of the power amplifier.
這個電容就相當于平時儲存電量，有需要時可以全部放出來。這就是削峰填谷。而電解電容的容量也要足夠大才可以，基本上都是1-2法拉（1000000-2000000μf）。
This capacitor is equivalent to the power stored at ordinary times and can be fully discharged when necessary. This is peak cutting and valley filling. The capacitance should be large enough, basically 1-2 farads (1000000-2000000 μ f).