3.7v 2200mah 18650 lithium battery

　　3.7v 2200mah 18650 lithium battery manufacturers interpret 3.7v 2200mah 18650 lithium battery injection process and 3.7v 2200mah 18650 lithium battery production injection precautions

　　3.7v 2200mah 18650 lithium battery manufacturers explain the 3.7v 2200mah 18650 lithium battery injection process and the precautions for liquid injection in 3.7v 2200mah 18650 lithium battery production. When making a hard-shell 3.7v 2200mah 18650 lithium battery, the positive electrode, negative electrode and separator are usually made into a core, and then the core is installed inside the battery case and covered with a cover. The liquid hole injects electrolyte into the interior of the battery. The quality of the electrolyte and the amount of liquid injected directly determine the quality of the 3.7v 2200mah 18650 lithium battery. Therefore, the liquid injection step is very important. The following 3.7v 2200mah 18650 lithium battery manufacturers explain the 3.7v 2200mah 18650 lithium battery injection process and the precautions for liquid injection in 3.7v 2200mah 18650 lithium battery production.

　　3.7v 2200mah 18650 lithium battery injection process

　　The current common liquid injection methods are mainly divided into two categories. One is to inject liquid directly through the liquid injection hole, and the other is to put the battery into the electrolyte and let the electrolyte penetrate into the battery. The method of injecting liquid through the injection hole can be divided into single injection and multiple injection according to the amount of liquid injected. Several injection methods have different measures to promote infiltration. Among them, the single injection method promotes the infiltration of electrolyte in the battery core by repeatedly pumping pressure, while the multiple injection method promotes the infiltration of the electrolyte in the battery core by pressurizing. The electrolyte infiltrates into the battery core, and there are no measures to promote infiltration in the immersion injection method.

　　The working principle of the 3.7v 2200mah 18650 lithium battery automatic filling machine is to place the battery box upside down in the positioning module of the filling plate. The air pressure drives the upper box to move. The upper pressure plate moves synchronously to press and seal the battery box and the filling plate. The inside of the battery box passes through The liquid injection hole and the liquid injection box form the same sealed space, and the liquid injection box is evacuated. After negative pressure is formed inside the battery, open the liquid injection valve. The battery liquid will automatically flow into the liquid injection tank from the transfer box due to the air pressure difference. Close the liquid injection box. Liquid valve.

　　One-time injection is the first injection. After the injection, the electrolyte infiltrates into the pole piece through the high-temperature aging room, participates in the chemical reaction, and realizes the conversion of chemical energy into electrical energy. It should be noted that some electrolytes contain additives such as overcharge protection agents, and the amount of electrolyte needs to be maintained to ensure battery safety. Secondary injection is a process of replenishing the electrolyte after formation. During the second injection, sealing is also taken into consideration. Commonly used sealing methods include rubber plugs, aluminum sheet laser sealing, steel balls, and glue dispensing sealing. In order to prevent dust contamination and enhance the infiltration effect, the battery can be manually sealed with a rubber plug after injection. Pull it out before forming, seal it again after forming, and unplug it before the second injection. Only in this way can the stacking method be used safely at high temperatures. Ageing.

　　3.7v 2200mah 18650 lithium battery injection equipment

　　1) Liquid injection equipment;

　　2) Pressure control equipment, vacuum equipment and pressurizing equipment;

　　3) Battery fixing structure.

　　Precautions for liquid injection in 3.7v 2200mah 18650 lithium battery production

　　1. The cylinder on the liquid injection machine equipment must use the same pressure process gas as the glove. Pressure 3-5Bar.

　　2. The production department must set up a dedicated person to prepare the electrolyte. Others are not allowed to prepare the electrolyte at will.

　　3. The additives enter the glove box and are put into bottles inside the glove box. All bottles containing additives must have a sign on them, distinguished by color, and marked with: Additive.

　　4. Please read this manual carefully before using the liquid injection machine. Otherwise, improper operation may cause mechanical failure, personal injury and other accidents.

　　5. Regularly check whether the fasteners of the liquid injection machine are loose and whether the sensors, motors, cylinders, solenoid valves, etc. are faulty to avoid unnecessary losses.

　　The modeling analysis method more clearly displays the factors that affect the injection and infiltration process of lithium-ion batteries, as well as the influencing factors between these factors, allowing us to more comprehensively analyze the effects of lithium-ion batteries. The factors of liquid injection provide a powerful analysis tool for optimizing the liquid injection and infiltration process of lithium-ion batteries.

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