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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6LR61 battery.Lithium battery protection circuit

release time:2024-02-27 Hits:     Popular:AG11 battery

  Lithium battery protection circuit

  Due to the high energy density of lithium-ion batteries, it is difficult to ensure battery safety.

  In an overcharged state, the battery will have excess energy as its temperature rises, so the electrolyte decomposes to produce gas, which may cause spontaneous combustion or rupture due to the increase in internal pressure;

  On the contrary, in an over-discharge state, the electrolyte decomposes, resulting in deterioration of battery characteristics and durability, thus reducing the number of rechargeable batteries.

  The protection circuit of lithium-ion batteries ensures safety in such overcharging and discharging states and prevents deterioration of characteristics.

  The protection circuit of the lithium-ion battery is composed of a protection IC and two power MOSFETs. The protection IC monitors the battery voltage and switches to an external power MOSFET to protect the battery when there is overcharge or discharge. The function of the protection IC is excessive. Charge protection, over-discharge protection and over-current/short circuit protection.


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