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The dew point is the temperature at which moisture condenses. When the water vapor content in the air remains unchanged and the air pressure is kept constant, the temperature at which the air is cooled to saturation is called the dew point temperature (Td), or dew point for short. It can also be understood as the temperature at which water vapor and water reach equilibrium. The difference between ...
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Areal density（mg/cm2）：Areal density refers to the mass per unit area, which in this case is (the mass per unit area ofthe region ignoring the volume). Compacted density（g/cm3）：The compacted density indicates the mass contained in a unit volume, which has a lot to do with the properties of the material itself. Thickness：The total thickness of the material and the foil is generally expressed in micr...
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The winding process of lithium-ion batteries is to roll the positive electrode sheet, negative electrode sheet and separator together through the winding needle mechanism of the winding machine. The adjacent positive and negative electrode sheets are isolated by the separator to prevent short circuit. After winding, the jelly roll is fixed with a termination tape to prevent it from spreading, and ...
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The principle of laser cleaning is to utilize the characteristics of laser beam with large energy density, controllable direction and strong convergence ability. The laser interacts with contaminants such as oil stains, rust spots, dust residue, coatings, oxide layers or film layers attached to the workpiece base, and is separated from the workpiece base in the form of instantaneous thermal expans...
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This article analyzes the causes of zero voltage. Focused on the phenomenon of zero voltage in the battery caused by electrode burrs. By identifying the cause of the short circuit, we aim to precisely resolve the problem and better understand the importance of controlling electrode burrs during production. Experiment 1. Battery preparation This experiment uses lithium nickel cobalt manganate mater...
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Lithium-ion Battery Anode Material Classification As one of the key materials for lithium-ion batteries, negative electrode materials need to meet multiple conditions. The Li intercalation and deintercalation reaction has a low redox potential to satisfy the high output voltage of lithium-ion batteries. During the process of Li intercalation and deintercalation, the electrode potential changes lit...
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Whether prismatic cells or cylindrical cells, welding is one of the important processes in battery production. In the lithium battery production line, the production section of the welding process is mainly concentrated in the cells assembly and PACK line section, see the figure below: Brief description of welding process details 1. Safety vent welding The safety vent, also known as the pressure r...
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Why are all-solid-state batteries an industry trend? High security: The safety issues of liquid batteries have always been criticized. The electrolyte is easily flammable under high temperature or severe impact. Under high current, lithium dendrites will also appear to pierce the separator and cause short circuit. Sometimes the electrolyte may undergo side reactions or decompose at high temperatur...
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What is calendering： Calendering of battery electrodes is an important step in the production process of lithium-ion batteries, and its purpose is to obtain electrodes that meet design requirements. Calendering is a necessary process. After the electrode coating and drying, the peeling strength between the active material and the current collector foil is low. At this time, it needs to be calender...
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