Testing Chambers Knowledge

  Environmental chamber manufacturer DGBELL introduces a great chamber which combines temperature, humidity and vibration into one equipment. This   Temperature Humidity Vibration Combined Test Chamber   is mainly to simulate the adaptability, safety and integrity of product in the process of transportation and actual use in the change of temperature, humidity, vibration and also other complex environments.   Environmental factors should also get analyzed individually when assessing the standard of pieces of apparatus that are vulnerable to vibration and temperature/humidity pressures. The usage Temperature Humidity Vibration Combined Test Chamber simultaneously may end in making top good high excellent products safe from surroundings.   Now’s increasingly smaller gadgets and much more diverse. The operation and setup of products are more at risk. Electric apparatus vibration screening has now increased into importance for an outcome. Combined-environment screen...

  The cycle life of lithium batteries has always been one of the most important parameters for electric vehicle buyers. How does a lithium battery get old? Aging always appears together with failure, but to be precise, aging and failure are two concepts. Aging, which refers to the deterioration of power battery performance parameters over time, is a quantitative process, and the parameters mainly refer to the maximum available capacity, internal resistance, and power of the battery. Failure, is the process of the battery completely lost the ability to work, relatively short in time, is a qualitative change. The accumulation of aging is an important cause of failure.   Factors affecting aging The best working temperature of the power battery is 15℃-35℃, but in daily applications, it is impossible to fully meet the needs of the battery, therefore, the most common scenario affecting battery aging is high temperature, low temperature.   In addition to the environment, the bat...

  The activation stage of lithium battery pack includes precharge, formation, aging, constant capacity and so on. There are two main factors influencing the performance of lithium battery pack, namely aging temperature and aging time. What’s more, it is important that the battery tested in the aging test chamber is in a sealed state. If it is a battery on, the data for the test will be very different, which needs to be paid attention to.   Aging generally refers to the placement of the battery after the first charging after the completion of liquid injection. It can be aging at room temperature or at high temperature. Its function is to stabilize the properties and composition of the SEI film formed after the first charging. The aging temperature is 25℃. High temperature aging varies from factory to factory, some of which are 38℃ or 45℃. Most of the time is controlled between 48-72 hours.   Effect of aging test on lithium battery pack First effect is to make the electroly...

  This passage summarizes the mechanism of thermal runaway and preventive measures, which have been applied in the design and manufacturing of all battery systems. However, in practice, different material systems have different chemical characteristics, so the thermal runaway mechanism of the battery core is different. Different system designs will also lead to different system-level risks and different solutions. Among them, the explosion is the power battery system is more common harm performance, caused by the impact, is more serious, not only will cause property loss and environmental damage, or even cause personal injury or life danger. Possible causes of combustion or explosion of a power battery system are: The exothermic side reaction of the power battery (cell) leads to thermal runaway and ignites the electrolyte and other combustible substances; 1、The local connection resistance of the high voltage circuit of the power battery system is too large, and when a large current...

  About salt spray test The salt spray corrosion test can evaluate the ability of salt spray corrosion to materials and their protective layers, and the comparison of process quality of similar protective layers, and also the ability of some products to resist salt spray corrosion. It is mainly used for the corrosion test of parts, electronic components, metal materials and industrial products. Salt fog test is mainly to test the influence of salt fog environment on the product in atmospheric corrosion environment, and provide data reference for product optimization. The environmental effects of salt fog can be divided into three categories: corrosion effect, electrical effect and physical effect. Corrosion effect: electrochemical reaction corrosion, accelerated stress corrosion, acid-base corrosion Electrical effects: salt deposits damage electrical equipment, produce conductive coatings, insulation materials and metal corrosion Physical effect: corrosive substances affect the ope...

  6 Facts About Vibration Testing Systems Vibration problem exists widely in the popular life and production, buildings, machines or the outside world will produce vibration under the incentive. And mechanical vibration often damages the normal work of machinery, and even reduces the service life of machinery and causes irreversible damage to the machine. Most of the mechanical vibration is harmful.  Therefore, the study of vibration is not only conducive to improving the living environment and living standards, but also helpful to improve the service life of mechanical equipment. Mechanical vibration testing technology plays a very important role in industrial production, manufacturing efficient mechanical vibration testing system has become an important content of testing technology. What is  mechanical vibration ? Mechanical vibration refers to the process in which the displacement of an observation point on the mechanical equipment or structure changes with time aroun...