Battery charging circuit with protection function and seat-type charger
A technology for battery charging and protection functions, applied in battery circuit devices, emergency protection circuit devices, current collectors, etc., can solve problems such as battery life decline and uncontrollable environment, and achieve the effect of reducing hardware costs and avoiding sharp declines.
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Embodiment 1
[0026] Embodiment 1, the battery charging circuit of this embodiment is based on the traditional main control chip that only has charging management functions, that is, the periphery of the battery charging management chip IC001, and an analog overvoltage protection circuit and an analog overheating protection circuit are respectively designed to Realize the overvoltage and overheat protection function for lithium-ion batteries, see figure 1 shown.
[0027] The overheating protection circuit is connected to the enable pin EN of the battery charge management chip IC001, and controls the battery charge management chip IC001 to turn on or turn off the pair of The charging process of the battery realizes the overheating protection of the battery.
[0028] In this embodiment, the overheating protection circuit can be implemented by connecting a PNP transistor Q42 with an NPN transistor Q3, such as figure 1 shown. Connect the base of the PNP transistor Q42 to the battery temperat...
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