The selection of environmental and reliability test chamber shall follow the following five basic principles: 1. Reproducibility of environmental conditions It is out of reach to completely and accurately reproduce the environmental conditions existing in nature in the laboratory. However, within a certain tolerance range, people can accurately and approximately simula...
Purpose of environmental stress screening The purpose of environmental stress screening is to find and eliminate the early failure of products, make them enter the random failure stage when leaving the factory, and deliver them to users with inherent reliability level. Principle of environmental stress screening Environmental stress screening is to accelerate the ...
Reliability test is an important technical means to evaluate and improve product reliability. It involves the formulation of test scheme, the development of test device, the recording of test process, the establishment of fault analysis technology and so on. Purpose of Reliability Test Reliability test is a test to analyze and evaluate the reliability of products. ...
Lithium evolution during battery charging and fast charging control Through the test, it is found that there will be obvious lithium precipitation when the battery is fast charged. Through the study of lithium evolution mechanism, it is found that the complete process of lithium evolution includes lithium precipitation and re embedding on the negative electrode surfac...
High Temperature Stress Basic parameters of high temperature stress There are two basic parameters of high temperature stress: (1) upper limit temperature (TU); (2) Time (T). In addition, there is another parameter to be considered: ambient temperature (TE), because the variable that really affects the effect of constant high temperature is the difference between the ...
Thanks to the warm attention of new energy, the power lithium-ion battery industry has also attracted much attention. Power lithium-ion battery is the power source for tools to supply power. It mostly supplies power for electric vehicles, electric bus, electric bicycles and sightseeing car. Focusing on the thermal runaway of power lithium-ion battery (mainly high-tem...
For the ideal lithium-ion battery, the capacity balance will not change in its cycle cycle, and the initial capacity in each cycle should be a certain value. Actually, the situation is much more complex. Any side reaction that can initiate or consume lithium ions may lead to the change of battery capacity balance. This will have a serious impact on the cycle performance ...
BMS failure mode The single failure of the battery is not only related to the battery itself, but also related to the failure of the battery management System BMS. BMS failure mode can also cause serious accidents, including the following categories: 1.BMS voltage test failure causes battery overcharge or over discharge: The voltage test line fails due to poor con...
This paper decomposes studying on the failure mode of power lithium-ion battery system is of great significance to improve the battery life, the safety and reliability of electric vehicles and reduce the service cost of electric vehicles. Various failure modes are considered in the design of power lithium-ion battery system to improve the safety of power lithium-ion batt...
Power lithium batteries are widely used in new energy vehicles because of their high energy density, high voltage, high specific power, good cycle performance, and no pollution. In order to meet the energy and range required for normal driving, the number of batteries is large, and the single cells are generally arranged in series and parallel to form a battery pack to s...
Environmental Simulation Test is conducted to verify the functional reliability of products during use, transportation and storage. It is to expose the product to natural or artificial environmental conditions to undergo its action, so as to evaluate the performance of the product under the environmental conditions of actual use, transportation and storage, and analyze a...
The temperature test chamber is generally composed of working room, adjusting equipment, auxiliary equipment and control system. The regulating system includes heater, evaporator and air supply device, and auxiliary equipment main room refrigeration unit. The control system includes temperature controller, program setter, safety alarm device and so on. The heater is re...
Environmental Reliability Test As a type of reliability test, environmental test has developed into a method to predict how the product environment affects the performance and function of the product. In other words, environmental tests are used to assess the degree of environmental impact on products before they are put into the market. When the function of the product ...
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 a...
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, ...
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...
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 s...
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 a...
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 mech...
Nowadays, battery is widely used in various fields as a storage method of renewable energy. In addition, the research on battery has been deepening, which makes the scope of its application gradually expanded from ordinary electronic equipment, electrical machinery, etc. to the power battery of electric vehicles and important components of aerospace equipment and so on. ...
In recent years, with the power battery set off a boom, the safety of power battery has been concerned. Many people wonder know more about the safety of power batteries. In addition to needling tests, what other tests have power batteries been subjected to? What are the important effects of different tests? Let's find out. As a matter of fact, whether it is lithium batt...
So far, there are still a lot of people think that the temperature shock and temperature cycle test process and principle of the difference is not big, are to raise or drop the temperature of the test product test; Some people are cheated by the testers because they don't know enough about the differences between them. If you think there is no difference between temperat...
Thermal runaway is the main cause of battery safety problems, so what causes thermal runaway of lithium batteries? First, the external factors of the battery. If the ambient temperature of the battery is too high, and the battery does not dissipate heat well, or the internal winding is poor, resulting in poor battery heat dissipation. In addition, companies need to pay...
The Nail Penetration Test, an internal short circuit test method, is a safety test that tests the internal short circuit tolerance of lithium-ion batteries. The Needle Penetration Test is a test that uses a steel nail through the battery to simulate an internal short circuit to confirm whether the battery is smoking, catching fire, or breaking. In addition, the needling...
Lithium Batteries for electric vehicles need proper testing. While testing, battery explosion can happen so we need an explosion-free test chamber. In this article, we will discuss a very useful walk-in explosion-proof test chamber. Using electric energy keeps growing steadily on earth. Lithium-ion batteries are chiefly utilized in such instances, so they’re studied from...
IEC 62619 specifies tests and requirements for secure secondary lithium batteries and cells used in industrial uses such as static applications. When there is an IEC 62619 standard specifying evaluation requirements and prerequisites of cells used in particular applications and will be in conflict with this record, the former takes precedence. Listed here are a few examp...
Industrial vacuum drying ovens are incredibly versatile items with software from lab study, technology, and the marketplace. Even a vacuum drying oven is most commonly employed for brittle drying procedures, like drying miniature components or eliminating chlorine solvents. The very minimal strain environment additionally reduces oxidation throughout elimination. A regul...
We are aware a vacuum drying oven is just a box-type draining apparatus that dries dry stuff under non-positive strain. It employs a vacuum pump to remove moisture from the atmosphere. Therefore, a vacuum cleaner condition is shaped at the chamber, which lessens the drinking water's boiling point and hastens the drying rate. The industrial vacuum drying oven gets the ben...
Besides ensuring vehicle occupants' safety, the battery life needs to be maximized via the module layout and battery life management strategy. Running current, thickness, charge/discharge speed, and temperature all strongly impact battery life. As a result of increasing time and cost pressure facing OEMs for the most recent generation of electrification technology, a bra...
Usually, lithium-ion batteries are among the safest forms to use. However, if they're damaged or include defects, they may be dangerous for employees who control material handling equipment. Whenever you're on the market for a brand-new lithium-ion battery provider, UL 2580 battery safety test certificates are a must-have. The meticulous testing and product requirements ...
DGBELL is one of the largest manufacturers of environmental test chambers worldwide. First I will go over a few key terms associated with reliability testing. Design validation, products. Validation, environmental stress screening, and product lifecycle testing are four of the most popular tests used for environmental testing. Common Specifications of Environmental Tes...
EV battery packs are equipped with many thermocouples, voltage sampling lines. The aim of the external fire exposure test machine is comparative research on the ramifications of a REESS about a gas fuel tank in similar vehicles and identity what, if any, are the possible safety problems connected to this REESS. Since their usage has increased in the past few decades, fir...
Different industrial fields utilize burn-in ovens for a host of drying out as well as healing processes. You may have to pick various stoves based on their classifications, capabilities, and configurations for matching various office footprints. The industrial burn-in ovens are developed for dynamic and fixed burn-in of integrated circuits and other digital tools, consis...
Every Lithium-ion battery developed is needed to fulfill specific requirements called criteria for battery testing, which clarifies its action regarding safe use. The lithium-ion security evaluations criteria are designed for analyzing lithium-ion batteries in the developmental phase to make sure it matches the worldwide safety requirements. These criteria for diagnosing...
For years, environmental test chambers have been used to examine products with numerous programs in aerospace, artificial intelligence, automotive, electronics, solar panel, and industrial. The kind of environmental testing included will decide on the chamber kind; chambers come in many different sizes, and environmental test chamber manufacturers make other performance ...
What is a burn-in chamber and where can it be used? The burn-in chamber can be used to assess and determine the adaptability of electrical, electronic products or materials for storage, and use under the environmental conditions of high temperature aging on the surface of electrical and electronic products or materials. The burn-in chamber uses forced air circulation to...
