桂花蒸

IP2365

Overview

This is a lithium battery charging module. The charging chip is IP2365 from Yingjixin. The board also has a charge and discharge protection circuit for the lithium battery. The two-point chip used is IP3012, which is also a product of Yingjixin.
This module can be directly connected to an unprotected bare battery. Of course, it can also be used if the battery itself has a protective plate.
According to the chip manual, this module supports 5~26V input and can support charging of a battery pack with up to 4 lithium batteries connected in series. But there is a certain matching relationship. Generally, 1~2 strings use 12V input, and 3~4 strings use 24V input. A single battery can be input with 5V. The input voltage is configured by R1 in my schematic diagram, and the output voltage is configured by R7. Please check the chip manual for the specific resistance value of the resistor.
The input terminal of my board uses a 4Pin 2.0mm terminal, and the output terminal uses a 6Pin 2.0mm terminal. I have reserved an interface for an NTC resistor on the terminal.
This module supports temperature feedback. If the NTC resistor is not connected, it will not work according to my plan. You need to change R6 to 51K.
I have a question. I found that the LED of this chip flashes regardless of whether it is connected to a battery or not. Is this normal? It can be recharged.
If you have any questions, please comment.

Design Files

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Update:2025-05-09 05:39:25

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