Sodium battery VS lithium battery, can it be replaced?
Since last year, listed companies have continued to enter projects related to sodium batteries, and the industrialization process of sodium-ion batteries has also achieved certain…
Consistency Analysis of All-tab Prismatic Winding Batteries
Lithium-ion batteries are typically combined in series or parallel to form a power battery pack in order to meet the performance requirements. As the number of individual batteries increases, the issue of battery consistency becomes more prominent. Inconsistency in batteries can lead to a range of problems such as reduced battery lifespan, decreased performance, and…
Reasons for the Capacity Degradation of Lithium Batteries
1.lithium precipitation and SEI film in lithium batteries This article provides a comprehensive analysis of the capacity degradation mechanism in lithium-ion batteries. It categorizes and organizes the factors that influence the aging and lifespan of lithium-ion batteries. It elaborates in detail on various mechanisms such as overcharging, SEI film growth and electrolyte, self-discharge, active material loss,…
Analysis for Lithium-ion Battery Internal Short Circuit
In the complex charging and discharging conditions of lithium-ion batteries during actual operation, although the battery management system can help achieve normal operation as much as possible, mechanical abuse, electrical abuse, and thermal abuse can still occur during overcharging, overdischarging, overtemperature, and other special situations. These abuses can lead to rapid degradation of battery performance,…
The main mechanisms and countermeasures of negative electrode decay in lithium-ion batteries
Lithium precipitation, thickening of the electrode surface passivation film, loss of reversible lithium, and degradation of the active material structure can all lead to a decline in the lifespan of lithium-ion batteries. Among them, the negative electrode is the primary factor causing capacity decay in the battery. This article summarizes the main principles of negative…
Lithium Battery Injection Process
The role of lithium battery electrolyte is to facilitate the conduction of ions between the positive and negative electrodes, serving as the medium for charging and discharging, much like the blood in the human body. Ensuring that the electrolyte fully and uniformly permeates the interior of the lithium battery is a critical challenge. Therefore, the…
Why Does the Capacity of Lithium Batteries Decrease in Winter?
Since its introduction to the market, lithium-ion batteries have gained widespread application due to their long lifespan, high energy density, and lack of memory effect. However, low-temperature usage of lithium-ion batteries poses challenges such as reduced capacity, severe degradation, poor cycling performance, pronounced lithium precipitation, and lithium imbalance during charging and discharging. As the application…
Key Processes and Equipment for Lithium Battery Cell Production
Mixing (positive and negative electrode active materials + conductive agent + binder + dispersant) – coating —– rolling ——- cutting — tab welding — – Winding (or gasket) – Adhesive paper – Inserting the battery shell – Welding – Sealing – Formation, etc. Basically the battery production process in the entire industry is similar, the…
Introduction to Battery Preheating Technology
What is battery thermal management? Batteries have similar characteristics to humans in that they cannot tolerate extreme heat or cold, and their optimum operating temperature is typically between 15-40°C. However, the working environment of a car can vary widely, with temperatures ranging from -20°C to 55°C being common. So, what can be done in such…
The reason for the appearance of black on the surface of disassembled lithium battery electrodes
1.The reason for the appearance of black on the surface of disassembled lithium battery electrodes The possible reasons for the black appearance on the surface of lithium battery electrodes during disassembly are as follows: 1.1 Formation of SEI film: On the negative electrode surface of a lithium-ion battery, a thin film called SEI is formed. This…
Drying and Cracking of Coating and its Solutions
Description of the problem The coating of lithium-ion battery electrodes mainly consists of two parts: coating and baking. The coating process determines key parameters such as coating width and coating amount, while the baking process has a significant impact on the electrode’s microstructure. Furthermore, the microstructure of the electrode greatly affects the battery’s wettability, adhesion, and…
Key Points in Lithium Battery Injection Design
The role of lithium battery electrolyte is to facilitate the conduction of ions between the positive and negative electrodes. It serves as a medium for lithium ion transportation and charge transfer. The common electrolyte for lithium-ion batteries consists of inorganic lithium salt electrolyte, organic carbonate solvents, and additives. As a medium for lithium ion migration…
Battery recycling-An important part of environmental protection and sustainable development
Lithium precipitation, thickening of the electrode surface passivation film, loss of reversible lithium, and degradation of the active material structure can all lead to a decline in the lifespan of lithium-ion batteries. Among them, the negative electrode is the primary factor causing capacity decay in the battery. This article summarizes the main principles of negative…