Keeping up with the international footsteps, my country's capacitor industrialization has made breakthroughs

【Hot attention from Chemical Machinery Equipment Network ] The Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences has developed a long-cycle life carbon-based lithium-ion capacitor monomer, marking an important breakthrough in the industrialization of high-performance carbon-based lithium-ion capacitors in China.

Two conductors close to each other sandwich a non-conductive insulating medium between them, which constitutes a capacitor.
When a voltage is applied between the two plates of a capacitor, the capacitor will store charge.
The capacitance of a capacitor is numerically equal to the ratio of the amount of charge on one conductive plate to the voltage between the two plates.
The basic unit of capacitance of a capacitor is farad (F).
In circuit diagrams, the letter C is usually used to denote capacitive elements.

Capacitors play an important role in circuits such as tuning, bypassing, coupling, and filtering.
It is used in the tuning circuit of the transistor radio, and also used in the coupling circuit and bypass circuit of the color TV.
With the rapid development of electronic information technology, the update speed of digital electronic products is getting faster and faster.
The production and sales of consumer electronic products such as flat-panel TVs (LCD and PDP), notebook computers, digital cameras and other products continue to grow, which has driven The capacitor industry is growing.

Lithium-ion capacitor is a new type of energy storage device between supercapacitors and lithium-ion batteries.
It has the advantages of high energy density, high power density, fast charge and discharge, long cycle life and high safety performance.
Electric vehicles have broad application prospects in the fields of energy recovery and acceleration, new energy power generation, and aerospace.

In recent years, due to energy issues and environmental protection requirements, the world’s demand for electric vehicles and hybrid vehicles has become more and more urgent.
The key part of electric vehicles is the battery, but the peak power characteristics of the battery cannot meet the requirements of the car in starting, accelerating and The demand for power in special circumstances such as climbing.
The application of supercapacitors as auxiliary power supplies in parallel with batteries in electric vehicles can make up for the shortcomings of batteries in terms of power characteristics.
When the car is in a normal driving state, the super capacitor is in a charged state.
In the special situation of acceleration or load climbing, the super capacitor can achieve high power discharge.
When braking suddenly, the super capacitor will be charged and absorbed during the braking process.
energy of.
The use of supercapacitors can meet the high-power discharge requirements of electric vehicles when starting, braking and climbing, play a role in balancing the battery load, and can extend the service life of the battery.

Compared with foreign countries, the research on supercapacitors in my country started late, starting in the late 1990s.
At present, the domestic companies that develop supercapacitors include Tianjin Lishen Company, Shanghai Aowei Technology Development Co.
, Ltd.
, Beijing Jixing United Electronic Technology Co.
, Ltd.
, Harbin Jurong New Energy Co.
, Ltd.
, Jinzhou Fuchen Super Capacitor Co.
, Ltd.
, etc.
The supercapacitors developed and produced in China are mainly used for civilian use, such as auxiliary power supplies for various electric vehicles, UPS systems, electromagnetic switches, airbags, peak and valley power balance of power stations, and electricThe lifting position of the crane can recover and other high-power electric occasions.  

　　Source: Electronic Enthusiast
 

　　Original Title: Keeping up with the international footsteps, my country has made breakthroughs in the industrialization of capacitors