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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Polymer lithium battery charging mode.CR2430 battery

release time:2024-04-09 Hits:     Popular:AG11 battery

  Polymer lithium battery charging mode

  At present, the charging method of polymer lithium battery generally adopts constant current and constant voltage charging: the battery first charges CC with constant current, and when the battery voltage rises to a certain value (4.2V), the voltage remains unchanged CV, and the current in the circuit drops to a small amount, and eventually tends to 0.

  Polymer lithium battery electrochemical principle:

  Polymer lithium-ion battery refers to a secondary battery in which the Li+ embedded compound is positive and negative. Lithium compounds LiCoO2, LiNiO2 or LiMn2O4 are used in the positive electrode, and Li-carbon interlayer compound LixC6 is used in the negative electrode. The typical battery system is:

  (-) C | LiPF6—EC+DEC | LiCoO2 (+)

  The positive reaction: LiCoO2 = Li1 - xCoO2 + xLi++ xe -- -- -- -- -- -- -- -- -- -- -- -- (2.1)

  The cathode reaction: 6 c + xLi++ xe - = LixC6 -- -- -- -- -- -- -- -- -- -- - (2.2)

  Total battery reaction: LiCoO2+6C=Li1-xCoO2+LixC6 ----------- (2.3)

  Consequences of overcharging of polymer lithium batteries

  Polymer lithium battery can not be overcharged, such as the occurrence of overcharging has a great impact on the performance of the battery, the negative electrode will deposit metal lithium, which may cause the battery explosion or fire, while the solvent in the electrolyte decomposition, resulting in serious damage to the battery performance.


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