A non-contact method of quickly detecting internal defects in lithium batteries was discovered. Can greatly improve the reliability of lithium batteries

Recently, the Helmholtz Institute (jgu) of Gutenberg University, Johannes, Maine, Germany, proposed a non-contact lithium-ion battery charge status and defect detection method, which can effectively detect the tangent lines inside the lithium battery. Improve the quality of lithium batteries and promote battery improvement. Professor Dmitry Budker and his team usually use atomic magnetism to use the earth's own magnetic field to explore some basic problems in physics, such as the discovery of new particles and other scientific fields. Magnetism is a term used to describe magnetic field measurement. Simple applications such as compass. Dr. Arne wickenbroc, a member of the working group of the Department of Physics of the Jgu and Helmholtz Institute, said: “Ensuring the quality of rechargeable batteries has always been a major challenge, and non-contact measurement methods can provide new inspiration for improving batteries. It can speed up the research and development process of lithium batteries, and effectively and significantly improve the safety of lithium batteries. 'The research team is using the atomic magnetometer to measure the battery and has made some breakthroughs. Dr. Wickenbrock said: 'Our method is the same as MRI, it is simpler because we use an atomic magnetometer. Dr. Wickenbrock said that the atomic magnetometer uses gaseous atoms as magnetic field probes and is an optically pumped magnetometer. And the equipment is commercially available and can already be used for industrial applications and basic research. Patek's team is also independently developing more advanced magnetic field sensors, using this atomic magnetometer for basic physics research such as dark matter research, hoping to solve the mystery of why matter and antimatter did not eliminate each other after the Big Bang. This will be a major scientific advancement. In the field of lithium battery measurement, the battery is placed in a background magnetic field. The battery will change the background magnetic field, and the changing process of its parameters can be measured with an atomic magnetometer. Wickenbrock added: 'This change provides us with information about battery charge status, remaining battery capacity, and possible damage. The measurement process is fast and can be easily integrated into the mass production process. 'There have been many reports about e-cigarette explosions or serious injuries caused by other lithium batteries during charging and discharging. At present, in addition to the regulations that prohibit certain types of mobile phones or lithium batteries when boarding, lithium batteries are even prohibited in many areas of our country Public transportation such as buses or subways shows that these theoretically safe lithium batteries still have internal defects. If this method is established, it will greatly improve the detection speed of lithium batteries and reduce costs, and the quality of finished lithium batteries will be more reliable. Disclaimer: The articles published on this site are from the Internet and do not represent the views of this site. If there is any infringement, please contact to delete WeChat: Disclaimer: Some pictures and content of the articles published on this site are from the Internet. A: [Rarely] Heating the lithium battery, may it be able to restore the battery capacity to a certain extent?