[High-tech LED reporter / Liu Pingping] As a kind of energy storage and filter components, capacitor is one of the core components in the entire power supply. There has been a saying in the industry that "the life of electrolytic capacitors is the life of LED driver power supply". Obviously, the life of capacitors is the shortcoming that restricts the development of LED lighting.
The industry believes that liquid
Aluminum Electrolytic Capacitors are the culprit, and it is the key element that leads to the failure of LED driver circuit life. If a long-life
Electrolytic capacitor with substantially the same lifetime as the LED can be made, the problem of the short-board of the LED driver driving the
Electrolytic Capacitor can be well solved.
Zhao Xiaobo, deputy general manager of Zhaoqing Emerald Electronics Co., Ltd. (hereinafter referred to as "Emerald Electronics") said that LED drive power supplies must meet the requirements of high reliability and long life. The direct requirements for electronic components are: electronic components are resistant to high temperatures. Long life, high frequency and low impedance, excellent temperature characteristics and small volume. At present, liquid aluminum electrolytic capacitors (hereinafter referred to as "liquid capacitors") commonly used have defects such as poor temperature characteristics, poor electrical conductivity, large impedance, short life, and poor safety.
For the electroless capacitor solution proposed by the LED power industry today, Liu Yongzhen, chairman and general manager of Emerald Electronics, believes that this solution has not been widely used, and harmonics, battery interference, expensive, bulky, and high power. Many related problems cannot be solved by removing the electrolytic capacitor.
Zhang Xiaobo pointed out that only the use of solid capacitors can completely solve the impact of electrolytic capacitors on the LED drive power and LED lamp life and characteristics. The solid capacitor relies on the solid conductive polymer as the electrolyte to conduct electricity. The conductive mechanism is based on electron conduction, which has better conductivity, superior comprehensive performance, and no electrolyte leakage, which protects other components of the circuit.
Beginning in 2010, Emerald began research and development of a new generation of conductive polymer solid capacitors to promote the upgrading of LED drive power. After more than a year, the company's R&D team has developed a series of conductive polymer solid capacitors, some of which are at the leading domestic and international advanced level.
Liu Yongzheng said, "Emerald's
Solid-State Capacitors can achieve such a design effect: under ultra-high temperature conditions, solid-state capacitors do not have electrolysis. In the process of high temperature, no air intake will occur and the drum bottom will not occur. If accidentally used, let If the electrolytic capacitor is broken, it will not cause leakage or fire. In low temperature, since it is not ion-conducting but electronically conductive, its low-temperature capacity attenuation is small; it is used for LED power supply. Even in the case of ultra-low temperatures, the LEDs work properly."
Zhang Xiaobo is very optimistic about the development prospects of solid capacitors. "We plan to sell 50% of the company's products in the next three years, and will gradually replace liquid capacitors in five years."
As an important strategic partner of 2013 Gaogong LED Lighting Exhibition, on August 2, Liu Yongzhen led the technical team of Emerald Electronics and the marketing team to Shenzhen to participate in the “2013 Guangdong LED Lighting Supply Chain Good Product Roving Seminar and High-tech Gold The award of the annual LED good product recruitment event."
On November 25th, Emerald Electronics will bring the solid capacitor series launched by the company to the 2013 High-tech LED Lighting Exhibition. Zhang Xiaobo said, "We will be exhibiting 160V solid capacitors for the first time, which is second to none in the industry. At present, solid capacitors in the industry can only achieve 63V."
The 160V solid capacitor to be launched by Emerald Electronics is a conductive polymer solid capacitor with independent intellectual property rights. The research and development of this product fills the gap of 160V solid capacitor in China. Its technology is in the leading position in the world, solving the problem of the performance degradation of liquid capacitors under external temperature changes. This product has a good use prospect in military and outdoor electrical appliances.
