News
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Research on Restrain on Thermal Runaway Propagation
Background The thermal propagation of a module experiences following stages: Heat accumulation after cell thermal abuse, cell thermal runaway and then module thermal runaway. Thermal runaway from a single cell is not influential; however, when the heat spread to other cells, the propagation will...Read more -
New version of GB 31241-2022 has been released
On December 29, 2022, GB 31241-2022 “Lithium ion cells and batteries used in portable electronic equipment —— Safety technical specifications” was released, which will replace the version GB 31241-2014. The standard is scheduled for mandatory implementation on January 1, 2024. GB 31241 is the fi...Read more -
Description of sodium ion cell in UL 1973:2022
Background As a new electrochemical energy storage device, sodium ion battery has the advantages of good security, low cost and abundant reserves. In recent years, the demand for electric vehicles, large-scale energy storage and power grids has made the market application of sodium ions urgent. ...Read more -
Two Resolutions on IEC 62133-2 Issued by IECEE
This month, IECEE issued two resolutions on IEC 62133-2 concerning the selection of upper/lower limit charging temperatures of cell and the limited voltage of battery. The following are the details of the resolutions: Resolution 1 The resolution clearly states: In the actual test, no car...Read more -
Conclusion on New Version of GB 4943.1
Background On July 19th 2022, Chinese Ministry of Industry and Information Technology release the latest GB 4943.1-2022 Audio/video, information and communication technology equipment – Part 1: Safety requirement. The new standard will be implemented on August 1st 2023, replacing GB 4943.1-2011 ...Read more -
Research on Direct Current Resistance
Background During charging and discharging of batteries, the capacity will be influenced by the overvoltage caused by internal resistance. As a critical parameter of battery, internal resistance is worth research for analyzing battery degradation. The internal resistance of a battery contains: ...Read more -
USB-B interface certification will be abolished in new version of CTIA IEEE 1725
Introduction of CTIA The Cellular Telecommunications Industry Association (CTIA) has a certification scheme covering cells, batteries, adapters and hosts and other products used in wireless communication products (such as cell phones, laptops). Among them, CTIA certification for cells is partic...Read more -
New version GB 4943.1 and the Amendment of Material Certification
Background Chinese Ministry of Industry and Information Technology release the latest GB 4943.1-2022 Audio/video, information and communication technology equipment – Part 1: Safety requirement on July 19th 2022. The new version of standard will be implemented on August 1st 2023, replacing GB 49...Read more -
The test of UN38.3 will be applied to sodium-ion batteries
Background Sodium-ion batteries have the advantages of abundant resources, wide distribution, low cost and good safety. With the significant increase in the price of lithium resources and the increasing demand for lithium and other basic components of lithium ion batteries, we are forced to expl...Read more -
Electronics Adapter Interface to be Unified in Korea
Korea Agency for Technology and Standards (KATS) of MOTIE is promoting the development of the Korean Standard (KS) to unify the interface of Korean electronic products into a USB-C type interface. The program, which was previewed on 10 August, will be followed by a meeting of standard in early N...Read more -
Introduction to Battery Waste Management Rules, 2022
Note 1: As for “SCHEDULE I”， “SCHEDULE II”， Table 1(A)， Table 1(B)， Table 1(C) mentioned above, please click the following link which lead to official gazette to learn more. Link: https://cpcb.nic.in/uploads/hwmd/Battery-WasteManagementRules-2022.pdf Note 2: Online Centr...Read more -
Upgrade of Korean KC 62619
Background Korean Agency for Technology and Standard (KATS) released 2022-0263 circular on September 16th 2022. It notices in advance the amendment of Electrical and Household Goods Safety Management Operation Instruction and Electrical Appliance Safety Standards. The Korean government concerns ...Read more