Testing Chambers Knowledge

  The power lithium-ion battery has the advantages of high energy density, long service life, high rated voltage, high power bearing capacity and low self discharge efficiency, and has become the ideal power battery for hybrid electric vehicles and pure electric vehicles. However, the safety problem of lithium-ion battery has become the main factor preventing it from being widely used in the power field.   With the increase of the number of electric vehicles, their safety problems are increasingly prominent, and the safety problems of electric vehicles mainly come from their power system – lithium ion batteries. The safety problem of lithium-ion battery is mainly caused by fire and explosion caused by thermal runaway, and one of the reasons for thermal runaway is short circuit inside the battery.   At present, the research on thermal runaway of lithium-ion battery mainly focuses on the modeling analysis and experimental analysis of one type of battery. This paper adopts d...

  Environmental testing   technology is a practical basic technology and one of the important technical measures to stabilize and improve product quality. Its main task is to study the impact of environmental stress on product performance and solve the reliability problems of products in storage, transportation or use.  Among them, thermal cycle test is a common type of climate test in environmental test technology. During the test, due to the change of   temperature and humidity environment in the test chamber , condensation may occur. This phenomenon often occurs in the low temperature to high temperature working condition stage where the temperature and humidity change dramatically. Many electronic products are affected by condensation water drops, resulting in accelerated chemical reaction of metal oxidation or electrochemical corrosion on the surface of thermal control coating, The electrical insulation performance is reduced, or even functional damage such as s...

  In today’s highly competitive market environment and the background of globalization, in order to quickly and successfully occupy the domestic and foreign markets, products must not only meet the performance requirements, but also improve the environmental adaptability and reliability of products. Therefore, environmental test and reliability test comply with the needs of the market and are valued by all walks of life at home and abroad. This paper focuses on the relationship between environmental test and reliability test.   1.Concept and research contents  Environmental test  is an important part of environmental engineering, which plays an important role in the development, production, storage and use of products. It is an important means to ensure the environmental adaptability of products.   Environmental test is the process of applying certain environmental conditions to products according to certain methods and procedures to test the environmental adapt...

  Environmental test is to expose materials or products to artificial or natural environment and evaluate their performance under storage, transportation and various conditions. From these aspects, we can see the correlation between environmental testing and reliability. Environmental test equipment is used to test and verify the reliability of any product in terms of environmental factors, just like taking a ruler with a scale to measure the length of other objects. If the scale is inaccurate, the measured length will not be accurate. Therefore, the reliability of environmental test equipment is particularly important.   1.Reliability overview of  environmental test equipment The reliability of environmental test equipment refers to the ability of environmental test equipment to complete specified functions under specified conditions and within specified time. Environmental test equipment includes electrical equipment and mechanical equipment. The principle of reliabilit...

  With the development of people in the military, aerospace and navigation fields, many equipment will work in the environment of high temperature, low temperature and high humidity. The equipment will face greater challenges in this environment. The stability of the equipment has an important impact on the work of the equipment.   The  high and low temperature humidity test chamber   (hereinafter referred to as the high and low temperature humidity chamber) is used to inspect the performance of materials in aerospace and navigation products under high temperature, damp heat and other environments. Its structure and working principle have certain particularity.   1.Use of  high and low temperature humidity chamber Before the environmental experiment, it is necessary to master the performance of the tested sample, the experimental procedure, the experimental conditions, and the experimental technology. At the same time, it is necessary to master the tec...