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  • Lithium ion full battery production process-Baking and electrolyte injection

    Baking The main purpose of baking is to remove moisture from the bare cell H2O can cause the decomposition of LiPF6, leading to an increase in HF levels:LiPF6+H2O->LiF+POF3+2HF H2O can react with organic solvents in the electrolyte to produce alcohol and CO2, for example:PC+H2O==>propyleneglycol+CO2 During the formation process, H2O can decompose, producing H2, consuming lithium…

  • Lithium ion full battery production process-Rolling

    Rolling Principle Roll pressing is a process that utilizes a roll press machine (as shown in Figure 1,the roll press machine used in the industry consists of three core components: a pair of rollers, an unwinding device, and a rewinding device) to compress the thickness of the electrode (as shown in Figure 1). This compression…

  • Lithium-ion full battery production-Summary of Processes

    Process Flow The main components of a lithium battery include a positive electrode with an active material typically being lithium cobalt oxide, a separator made of PP or PE composite membrane, a negative electrode with carbon as the active material, organic electrolyte, and a battery case made of aluminum-plastic composite film. The manufacturing process involves…

  • Lithium-ion full battery production-Separator section

    Role of Separator The separator is an important component of lithium-ion batteries. Electronic insulation and ionic conductivity. Add Your Heading Text Here Characteristics of separators Electronic insulation – mechanical isolation between the positive and negative electrodes; Certain pore sizes and porosity, low resistance and high ionic conductivity, allowing good permeability for lithium ions; Resistant to…

  • Canrd Lithium-ion full battery production – Anode Mixing Section

    mixing Slurry stirring is the process of adding active materials, conductive carbon black, dispersants, binders, additives, and other components to a mixing equipment in a certain proportion and order. Under the mechanical actions such as agitation, kneading, and shearing generated by the equipment, these components are mixed together to form a uniform, stable solid-liquid suspension…

  • Canrd Li-ion full battery production–Anode Materials Section

    Principles for Selecting Anode Materials for Lithium-ion Batteries Selection Principles for Anode Materials High specific energy; As low as possible electrode potential relative to lithium electrode; Good reversibility during charging and discharging processes; Favorable surface structure that forms a good SEI film with the electrolyte; Excellent structural dimensions and mechanical stability during insertion/extraction processes to…

  • Canrd Li-ion full battery production–Slitting and Winding Section

    Slitting Semi-automatic slitting             Effect of semi-automatic slitting             Automatic slitting                    Battery factories use semi-automatic and automatic slitting machines for slitting Universities often adopt manual cutting (hard to control the burrs of the electrode ) Slitting Issues Slitting…

  • Canrd Li-ion full battery production — electrolyte Section(II)

    Expression of the formula Start with an article From the figure above, it can be observed that the industrial prefers to use mass ratio expressions, which is significantly different from the volume ratio expressions commonly used in academic circles. This is largely due to the following reasons: 1. Industry is based on quality control unit…

  • Canrd Lithium-ion Full battery production — electrolyte Section(I)

    Lithium-ion battery electrolyte Lithium-ion battery electrolysis is a mixture of organic solvents and lithium salts, plus functional additives. The electrolyte itself is electrically neutral, and conducts ions but not electrons in the battery, and it is one of the important components to ensure the normal operation of lithium-ion batteries Role of Electrolyte 1、Lithium-ion battery electrolyte…

  • Canrd Lithium-ion full battery production–Design-2

    High energy density system battery Mass Energy Density = Capacity * Voltage Platform / Weight (Wh/kg)Volumetric Energy Density = Capacity * Voltage Platform /Volume (Wh/L) Energy Density↗ ,Required Capacity↗, Voltage Platform↗,Weight↘,Volume↘ Set goals: (1) capacity, (2) energy density Design Principles MaterialPositive electrode, negative electrode, separator, conductive agent, adhesive, aluminum-plastic film, foil material and tab, etcDesignCoating…