18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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button cell battery cr1620.Lithium battery processing technology, lithium battery processing price analysis

release time:2024-01-08 Hits:     Popular:AG11 battery

  

  Lithium battery processing technology and lithium battery processing price analysis. As an energy storage battery that has been developing rapidly in recent years, lithium batteries are still relatively mysterious to us in terms of their production and processing technology. After all, lithium batteries have not been developed for a long time compared to lead-acid batteries, and their development The upper limit has not yet been reached.

  The structure of lithium battery

  The structure of lithium battery is divided into five parts, namely positive electrode, negative electrode, separator, electrolyte and casing.

  1. Positive electrode

  Among the overall constituent materials of lithium batteries, positive electrode materials occupy a larger proportion, and the mass ratio of positive and negative electrode materials is 3:1~4:1. Because the performance of the cathode material directly affects the performance of the lithium battery, its cost also directly determines the cost of the battery.

  The cathode material contains active materials, conductive agents, solvents, binders, matrix and other substances.

  2. Negative pole

  Lithium battery anode materials hold the lifeblood of power battery safety. Among lithium battery anode materials, in addition to graphitized mesocarbon microspheres (MCMB), amorphous carbon, silicon or tin, which occupy a small market share, natural graphite and artificial graphite Occupying more than 90% of the anode material market share.

  The negative electrode material contains active materials, binders, solvents, matrix and other substances.

  3. Diaphragm

  The main function of the separator is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and causing a short circuit. In addition, it also has the function of allowing electrolyte ions to pass through.

  Marketed separator materials are mainly polyolefin (Polyolefin) separators based on polyethylene (PE) and polypropylene (PP). Among them, PE products are mainly made by wet processes, and PP products are mainly made by dry processes. Produced by legal process.

  4. Electrolyte

  Lithium battery electrolyte is the carrier for ion transport in the battery. Generally composed of lithium salt and organic solvent. The electrolyte plays a role in conducting ions between the positive and negative electrodes of lithium batteries, which is the guarantee for lithium batteries to obtain the advantages of high voltage and high specific energy.

  The electrolyte is generally prepared from high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials under certain conditions and in certain proportions.

  5. Shell

  The lithium battery shell includes steel shell, aluminum shell, cover plate, pole tab, insulating tape and other hardware.

  Lithium battery production and processing process

  The production and processing process of lithium batteries is not very consistent for each manufacturer, but most of them are inseparable from these links, as follows:

  Detailed explanation of the production process flow chart of lithium batteries

  Specifically as follows: material preparation - homogenization - coating - rolling - cutting - baking - winding - shelling - laser welding - baking - liquid injection - pre-processing Charging - sealing - cleaning - aging - full inspection - warehousing - shipping.

  Lithium battery processing price analysis

  The development of lithium batteries is rapid, but it is also imperfect. After all, the development time is not long enough, and there is still room for progress. Therefore, there is still a broad prospect for the processing of lithium batteries.

  However, in terms of specific prices, the prices of different merchants are different. It is best to compare multiple companies to process the required lithium batteries at a more suitable price.


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