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BQ25570EVM-206: Electromagnetic vibration energy harvesting, but BQ25570 does not discharge

Part Number: BQ25570EVM-206
Other Parts Discussed in Thread: BQ25570

Electromagnetic vibration is used for energy harvesting, the full-bridge rectifier is connected to the input terminal of BQ25570, Vbat is connected to a 1000uF capacitor, Vstor is connected to a 1800uF capacitor, and EN is connected to END. After charging to the threshold, the output terminal does not discharge, and continues to charge to above 4V. I don't know where is the problem and how to solve it.