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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Basic composition of lithium battery protection board.R6 Carbon battery

release time:2023-06-06 Hits:     Popular:AG11 battery

  

  1. The composition of the protective board

  The reason why lithium batteries (charged) require maintenance is determined by its own characteristics. Because the material of the lithium battery itself determines that it cannot be charged, overdo, overcurrent, short -circuit, and ultra -high -temperature charging, so lithium battery lithium battery components will always appear with a delicate protective board and a current insurance. The maintenance function of the lithium battery is generally completed by maintenance circuit board and PTC. The protective board is composed of electronic circuits. In the environment of -40 ° C to+85 ° C, accurately monitor the voltage of the battery cell and the current of the charging loop. Control the flow of the current circuit; PTC prevent bad damage to the battery in high temperature environments.

  Protective boards generally include control IC, MOS switches, resistors, capacitors and auxiliary equipment NTC, ID memory, etc. Among them, control IC, control the MOS switch to turn on in all normal circumstances, and communicate the battery cell with the external circuit. When the battery voltage or circuit current exceeds the specified value, it immediately controls the MOS switch between the MOS switch. Maintain the safety of the cell. NTC is the abbreviation of Negative Temperabure Coefficient, which means negative temperature coefficients. When the ambient temperature rises, its resistance is reduced. Use electric equipment or charging equipment to respond in time, control the internal suspension and suspend the charging. ID memory is often a single -line interface memory. ID is the meaning of the abbreviation of Identification, that is, identity recognition, storage battery types, production date and other information. Can play the restrictions on the traceability and use of the product.

  Second, the primary role of the protective board

  Generally requires that the operating current and voltage and voltage of the voltage and charging circuits of the CONTROL (IC) at -25 ℃ ~ 85 ℃ are required to be turned on Normally operating conditions, and when the operating current in the battery voltage or circuit exceeds the preset value of the circuit in the control IC, within 15-30ms (different control ICs and C-MOS have different response time) , That is, turn off the battery discharge or charging circuit to ensure the safety of users and battles.


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