SolarLiPoChargeProtectBoost

2 years ago

Open source license:

  • 1.2w
  • 7
  • 55

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SolarLiPoChargeProtectBoost

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All comments 7

combicon

Here, this article mentioned solar powered power bank circuit with over charge and over current protection. ( TP5086 IC module)

2020-07-13 09:39:28
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hichm

@josuemele01 https://easyeda.com/hichm/SolarLiPoChargeProtectBoost
i do update, R3 linked to GND

2020-06-09 21:16:55
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Sombrion 2.0

It´s a good job, but why the resistor R3 is not connected to GND?, Is that dangerous for the PCB?

2020-06-05 22:42:43
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simon.lamy.tech

I looked at your circuit and I saw something I don't
understand: Resistor R3 part of a voltage divider for boost converter
feedback has an incomplete circuit to ground, It shows as an incomplete
trace in the PCB editor and from what I understand, the finished board could
not function like this ?!?

2020-04-06 17:18:53
Reply

mrRo8o7

Am i right to choose the voltage divider for mppt pin (R8, R9) according to the maximum Voltage of the Solar panel? Thank you for this project!

2019-08-07 08:18:46
Reply

vkbs

There could be an issue if the battery protection turns off the battery (eg overvoltage) but CN3791 still is in constant voltage mode:
According to datasheets:
FS312F: overvoltage protection 4.225 - 4.275V
CN7391: overvoltage at 4.2V +/- 1% -> max 4.242


CN3791 has no battery detection thus leading in a ripple waveform in the output.


Also if the battery is over discharged, CN3791 blocks until threshold is reached. Unfortunately the battery will then never be connected to the charger. So a undercharged battery will not charge.


This could be avoided to connect the charger directly to the battery. The overcharge protection would then only disconnect the load though :-/

2019-03-07 09:56:07
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Stupidn3rd

Love this! Your the greatest man, truly inspiring. From Milwaukee Wisconsin  U.S.

2018-12-09 15:46:21
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