Processing the 'perfect' battery is to find the best balance between cost, performance and lifespan

According to foreign media reports, a recent technical paper published by the Institute of Photovoltaics in Berlin (PIBerlin) pointed out that the chemical composition of lithium batteries may be the 'most significant' factor affecting battery performance, but only five important factors affecting battery performance. one. Other four key factors affecting battery performance include: battery geometry, processing quality, matching technology with the correct application, and system integration. The work of the Berlin Photovoltaic Institute, which is well-known in the solar energy industry, includes audits and evaluations of the processing quality of solar power modules. The company has expanded the scope of its services to include quality evaluation of lithium batteries used in the renewable energy industry. After the battery energy storage system is deployed, it is difficult to check for battery defects. Ian Gregory, Benjamin Sternkopf and David Prince, the authors of this technical paper entitled 'Knowledge for Processing Lithium Batteries' wrote in the article: 'Among these key factors, the battery chemical composition It’s just the tip of the iceberg that affects the performance of electrical energy. In other words, battery chemistry is only the most significant feature of the battery, but what is often forgotten is that in practical applications, the actual performance of the battery system rarely depends on the battery chemistry. In most cases, it’s just one of the five factors that affect battery performance.” On the contrary, the importance of ensuring the quality of battery processing is often overlooked, and it is one of the least concerned factors among these important factors, even if the two processing manufacturers process The battery uses exactly the same chemical composition, and the technology and conditions of its processing line will also have a huge impact on the final quality of the battery product. In the public domain, there is already a lot of information about battery chemistry or battery shape, and calculation tools can be used to model battery technology and the correct application. However, the battery processing technology and processing quality are still to a large extent the trade secrets of each battery manufacturer, and the details of the processing technology will not be disclosed to the public. Processing the 'Perfect' Battery or Finding the Best Choice This paper details the processing methods of lithium batteries and the many factors to be considered during the processing that may affect the quality of the batteries used. Battery processing is a complex process, with more than 170 independent steps from quality control to processing. Some of the most critical quality parameters include battery residual humidity and surface uniformity. The effects of poor processing can cause rapid battery degradation. However, the battery capacity may be reduced after a few charge and discharge cycles, or the battery may be more likely to self-discharge if it is kept in a standby state. If the processing process is not well managed, safety hazards may also arise. For example, the surface uniformity of the battery plate is poor, and there will be some small spikes, which may pierce the separator and cause a short circuit inside the battery. The paper pointed out that in battery manufacturing quality management, application scenarios and financial issues should be combined. For example, although it is possible to process a battery that can charge and discharge 15,000 times and have a life of up to 20 years, in fact, for most application scenarios, a battery charge and discharge of 3500 to 4,000 times and a 10-year service life are sufficient. The secret of processing this battery is not to process the 'perfect' battery, but to find the best balance between cost, performance and life. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Biden will support the development of copper and lithium mines in the United States to promote the development of the electric vehicle industry