博文

目前显示的是 七月, 2018的博文

48V lithium-ion battery technology

图片
After the development of battery energy storage, electric vehicle, consumer electronics and other industries, the maturity of technology and industry has increased rapidly in the past few years, and the security has been greatly improved, and the price has been greatly reduced at present. Considering its excellent discharge capacity, high temperature resistance, simple maintenance, high energy density and light weight, it is a hot research field in many industries, and it fits the application scene of future data center and can be used to replace the traditional lead-acid battery. Considering its long service life, the cost from ROI is similar to that of lead-acid batteries. 48V lithium battery BBU technology has a lot of research and application in telecom industry and battery module of electric vehicle. It is also mature, and there are many industries and technology, operation data and so on. If a 2U to 3U high 48V battery BBU is installed next to the  48V power supply  enclosure of

Vulnerability element and fault analysis of switching power supply

图片
In electronic circuits, many failures are caused by switching power failures, and most of the common failures of the switching power supply are caused by damage to some vulnerable parts. For example, the switch tube in the  switching UPS  is often damaged, but the switch transformer has a very low probability of damage, almost negligible. So I summed up some of the components which are easily damaged in switching power supply, and what will happen after the damage. 1.Protective tube Most of the burning protective tube is caused by the large current of the post level circuit, that is, the circuit behind is short circuited, such as the switch tube, the current limiting resistance, the bridge pile burning the short circuit, the chip damage, the large filter capacitor damage and so on, all will cause the burning of the Protective tube, the failure phenomenon is no response to the electricity. If you change the protective tube, do not rush the electricity test, we must find fault or ta

Using modular UPS to improve efficiency and reduce carbon emissions from data centers

图片
Cooling technology has developed rapidly in recent years, significantly improving efficiency and reducing energy waste. The energy consumption of the air conditioning in the computer room accounts for 1/3 to half of the total power consumption of the data center. Nevertheless, these measures are not enough. Another key element of data center infrastructure provides similar improvements. Uninterruptible power supply is an important part of data center operation, providing key power protection and providing reliable backup power when the power interruption occurs. But just as servers consume electricity, generate heat, and require continuous cooling to run safely, so do UPS devices. In the past, this has affected the efficiency of many data centers, but in this field, significant technological advances have been made, that is, the rise of  modular UPS systems . Previously, the most deployed UPS power source in the data center was a large tower type device, using traditional technology

Analysis of industrial chain of telecom power supply

图片
The industry chain of  telecom power supply  is mainly divided into raw materials, equipment manufacturing, agency, engineering consulting and design, construction, supervision and project investment from the value chain. From the perspective of enterprise chain and upstream and downstream, the telecom power industry chain is mainly divided into raw materials provider, equipment manufacturer, mechanical and electrical equipment agent, telecom engineering consulting and Design Institute, telecommunication engineering construction, telecommunication engineering supervision and telecom operators. From the angle of the space chain, the domestic telecommunication power industry is concentrated in the Pearl River Delta, the Yangtze River Delta and the Beijing region, and the foreign countries are mainly concentrated in the central European countries and the United States, and the latter accounts for the 60%. of the market share of the telecommunication power supply. Current situation