Testing Chambers Knowledge

  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 temperature shock and temperature cycle, you are wrong. How much do you know about the difference between temperature shock and temperature cycle? Now let’s look at the differences in definition, purpose, application area, and effect.   How much do you know about temperature shock? Definition of temperature shock Thermal shock test   is often called temperature shock test or temperature cycle, high and low temperature cold and hot shock test. Temperature shock According to GJB 150.5A-2009 3.1, temperature shock is A sharp change in the temperature of the atmosphere around the equipment. The temperature change ra...

  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 battery or battery, due to the particularity of its application field makes people’s requirements for the safety performance, reliability and cycle life of the battery more and more high, power battery production process is long, in addition to more than 50 production processes, It also includes battery charge/discharge performance test, battery cycle life test, battery capacity test, quality assurance delivery/incoming testing, production testing and other testing procedures. On the basis of improving manufacturing technology, we must also pay attention to battery product performance test. Important power battery test...

  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 test is not only a test to confirm the safety of the battery, but also a test to understand the basic nature of the battery. In the normal state, the positive and negative electrode sheets of a lithium-ion battery are insulated by a polymer insulating film – the diaphragm – in the organic electrolyte. In this state, a steel nail is inserted in the lithium-ion battery to create a short circuit between the positive and negative electrode plates, forcing an internal short circuit test. The test method is characterized by the ability to adjust the test conditions such as the diameter, material, insertion depth, insert...

  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 special attention to another situation, that is, the battery spine is sometimes hot.  The metal spine of the battery has copper and aluminum and has a relatively good thermal conductivity. For circuits in components with some high heat sources, it is important to ensure that they are kept away from the battery spine to adequately dissipate heat.   Again, the internal factors of the battery. One is a micro-short circuit. There are two types of micro-short circuits.   One is the short circuit in the battery production process, including burrs; the other is the use of the process in t...

  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 the previous decades, together with the intention to increase the degree of basic security ensured within their own performance. Anyway, basic protection problems remain, and the most important issue is to prevent the growth of poisonous incidents. These incidents might be affiliated with short circuits, including over-charge/over-discharge electrical currents and overheating. These risky conditions can cause exothermic chain responses in the storage technique, which may discharge hazardous or sterile gases and, lastly, catch fire. These issues need to get confirmed in lots of software and specifically wh...

  DGBELL No.11 Wusong 1st Street, Dongcheng District, Dongguan 523117, Guangdong, China DGBELL was founded in 2005 and is situated in Dongguan China. DGBELL supplies and assistance to meet different clients, notably the most customized equipment. Following excellent attempts in the previous 14 decades, their yearly manufacturing capacity has already reached RMB 120 million. In 2009-10 the company was certified with ISO 9001:2007 and invented 13 technical patents. In the same year, it was awarded as the best private company in Guangdong. DGBELL focuses upon the environmental test chambers primarily. But they also manufacture Li-ion Battery safety test devices, EV (Electric Vehicle) Battery Security Examination Tools, Environmental Test Devices, and Mechanical Evaluation Gear. They collaborated with many internationally renowned businesses from Europe, Asia, South America, and Australia, for example, auto providers, battery businesses, electronics businesses, detection associations, ...

  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 examples of software that use batteries and cells under this document’s scope. Because IEC 62619 covers, batteries for various industrial uses, it comprises these requirements, which might be typical and minimal to the several software. Electrical safety is included only as part of the risk evaluation of Clause 8. Regarding details for fixing electrical security, the end-use program standard requirements need to be thought about. This test applies to batteries and cells. If the battery is split into smaller components, the more compact device can be analyzed as the owner of this battery. The producer ackn...