Testing Chambers Knowledge

  Environmental test equipment mainly simulates a series of natural conditions such as high and low temperature, damp heat, low pressure, sand and dust, and has high requirements for simulation accuracy. With the development of the industry. More and more customers need to put forward explosion-proof requirements for equipment while realizing the above environmental simulation.  So as to adapt to a wider range of test samples. For explosion-proof, the concentration of combustible gas in the chamber shall be detected during the simulation test. When abnormalities are found, the test chamber shall take measures to reduce the concentration of combustible gas and avoid accidents such as combustion and explosion. Once an explosion occurs, the strength structure and protective measures of the test chamber are particularly important. Proper protection can reduce economic property losses and avoid casualties.   1.Control of Chamber Explosion is caused by violent chemical reaction...

  In coastal areas, the atmosphere is full of salt fog, which mainly comes from the sea water. These salt fog in the atmosphere have strong corrosive application to commodities and materials.  In the process of transportation, if it passes through the sea or coastal areas, the transported goods are likely to be damaged due to the corrosion of salt fog. Therefore, under such circumstances, salt spray corrosion of commodities or articles in advance can not only fully understand the salt spray corrosion resistance in advance, but also avoid the corrosion of commodities due to poor consideration in the process of transportation. Next, let’s explore the important role of salt spray corrosion test chamber in the anti fog corrosion of articles.   1.Meaning  The so-called  salt corrosion test chamber  is a common environmental detection and test equipment. It mainly creates a salt spray atmospheric environment similar to nature by simulating the content of salt spr...

  2.1 Comparison of Structural Safety Requirements UL1973 puts forward more detailed and specific requirements for product shell. For example, there are specific requirements for non-metallic shell, metal shell, wall hanging support handle, cable and terminal. In these aspects,  IEC  and GB standards have no detailed specification requirements, but only require that the shell shall not be broken in relevant experiments, resulting in internal material exposure or liquid leakage. UL standard also regulates the reliable protective grounding of the shell, while IEC and GB have no protective grounding specifications for the battery system, which are implemented according to relevant electrical standards, which is easy to be neglected in the process of inspection.   2.2 Comparison of Safety Requirements for Battery The battery body safety here refers to the test requirements directly related to the battery, such as overcharge and discharge test. The national standard speci...

  1.2 Safety Standards for UL Energy Storage Systems UL(Underwriter Laboratories Inc.) The Safety Laboratory is the most authoritative independent and profit-making professional organization engaged in safety testing and identification in the United States, and its main safety standards for electrochemical energy storage are as follows: UL 1973 STANDARD FOR SAFETY ANSI CAN/UL-1973:2018，Batteries of Stationary,Vehicle Auxiliary Power and Light Electric Rail(LER)Applications UL 9540 Energy Storage Systems and Equipment Test Standard UL9540A Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems   UL1973 covers battery systems for energy storage in stationary applications such as photovoltaics, wind storage or UPS, as well as battery systems for light electric tracks and stationary railway applications, such as railway substations, and, in a similar way to IEC62619, covers common safety requirements.  However, unlike IEC, UL does not plan to compile li...

  Electrochemical energy storage system has the characteristics of convenient and flexible installation, fast response speed and good controllability, which can significantly improve the power grid consumption capacity of renewable energy sources such as wind and light, improve power quality, smooth the power grid flow, reduce power asset investment, and play an important role in promoting the transformation and development of energy transformation.  In recent years, lithium-ion battery energy storage systems have been able to flourish in the power industry in countries around the world due to their significant advantages such as high energy density, large discharge rate and declining cost. At the same time, the preparation and release of energy storage related standards are also constantly updated with the development of the energy storage industry. These standards and specifications have actively guided and promoted the development of the energy storage industry, but there a...

  There are increasing cases of lithium-ion battery product recall due to safety problems. The activity and high energy density of Li will bring great problems to the safety of lithium-ion batteries. At present, the screening, inspection methods and standards for the safety performance of lithium-ion batteries, especially the potential safety hazards caused by some potential micro structural defects, lag behind the development of lithium-ion battery technology, and the evaluation method and evaluation system have not yet met the requirements of lithium-ion battery safety performance evaluation. In view of this, this paper summarizes and analyzes some representative standards. 1.Introduction to battery safety performance testing standards At present, the widely used international standard is the lithium ion battery standard of the International Electrotechnical Commission ( IEC ). According to their respective needs, the International Air Transport Association (IATA), the United Nat...