Testing Chambers Knowledge

  With the widespread use of lithium-ion batteries in people’s daily lives. The safety performance of lithium-ion batteries is getting more and more attention.   For example, the battery explosion of digital camera manufacturer Nikon in 2005, the explosion of Nokia mobile phone battery in 2006 and the battery explosion of Apple’s mobile phone. These accidents have caused huge losses to people’s property and safety. For larger power battery modules, the safety performance is more prominent. These accidents are mainly caused by the short circuit of the battery during use.  Therefore, the safety performance is also a bottleneck restricting the development of lithium-ion batteries to high energy and large scale. The needle penetration test uses a steel needle with a diameter of 3 mm to 5 mm to insert the battery. Itcausing a short circuit inside the battery, thereby studying the safety performance and heat generation of the battery. The article introduces the influencing fact...

  Battery testing is an important part of ensuring battery safety and reliability. Because the battery itself has certain risks (such as short circuit, leakage, leakage corrosion, etc.), the detection process also hides various safety risks. In the inspection process, large-scale mechanical auxiliary equipment, high-current charging and discharging systems, and simulation experiments of extreme environmental conditions are often required.   It is worthwhile to conduct in-depth research to ensure the safety of the battery testing laboratory and to ensure the personal safety of the laboratory personnel and the property safety of the equipment. Classification of Battery Testing Items First Classification Battery testing items can be generally divided into four categories: appearance inspection; Appearance inspection includes appearance, polarity, dimensions and quality, ect. Electrical performance testing; Electrical performance testing includes room temperature discharge capacit...

  Low Atmospheric Pressure Environmental The air has a certain weight to form atmospheric pressure due to the gravitational force of the earth. As the height increases, the air gradually becomes thinner and the atmospheric pressure gradually decreases. According to the actual measurement, within 3000km of sea level, the air pressure is reduced by 100Pa for every 10 meters of height. The atmospheric pressure at approximately 31 km is 1/100 of the sea level standard atmospheric pressure value. In addition to height, atmospheric pressure is also related to weather changes. At the same point, the sunny air pressure is high cloudy air pressure. In addition, the winter pressure is higher than the summer pressure. In Chian, about 50% of the Earth’s surface area is 1000m above sea level, and about 25% is more than 2000m above sea level.Thus, equipment stored, transported and used in the air above the sea level and in the air will inevitably encounter a low-pressure environment and be subje...

  With the continuous progress of science and technology, the space that human beings can travel is more and more extensive. From the tropics to the frigid zone, from the plains to the plateau, from the ocean to space, etc., this makes the environment encountered in the storage, transportation and use of various products more and more complex. In order to ensure that the product can adapt to these complex and harsh environment, the product from the development of the need to consider its future may encounter environmental conditions. Various measures taken in the component selection, structural design, manufacturing and assembly processes of the product, so that it can adapt to the requirements of the environment.  Environmental testing is an activity to verify that a product is capable of maintaining functional reliability under the expected working environment. The Importance of Environmental Testing Environmental testing is actually the exposure of products to the natural e...

  Electronic products in the development and manufacturing process may have a variety of reasons leading to the direct occurrence of defects.  Some defects of electronic products can be eliminated by conventional inspection methods. However, conventional methods cannot detect potential defects.  At this time, we need to use the thermal shock chamber to conduct the experiment. To some extent, the early stage failure and exposure design and manufacturing process of components and components can be eliminated by using temperature impact chamber to conduct experiments on electronic products. The reliability of the product is in line with the actual demand, thus improving the reliability of electronic products. Basic method of thermal shock 1. Thermal Shock Test Selection Principle In general, electronic products that may be used in the event of a sharp change in air temperature need to be detected by a thermal shock chamber. In addition, the thermal shock chamber is also an e...