Power supply control method and power supply device

By detecting the power supply role and timestamp difference at the power supply device port, the self-charging output is cut off, which solves the problem of power waste and heat generation caused by the erroneous triggering of charging logic in mobile power devices, and improves the reliability and safety of the device.

CN121663690BActive Publication Date: 2026-06-30SHENZHEN LANHE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN LANHE TECHNOLOGY CO LTD
Filing Date
2026-02-03
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

When using devices such as power banks with multiple input and output ports, the charging logic may be accidentally triggered, causing the device to enter a self-charging state, continuously consuming power and potentially causing the device to overheat or shorten battery life.

Method used

By detecting the current power supply role of all ports of the power supply device, obtaining the timestamps of the power supply party and the power receiving party, calculating the time difference, and cutting off the power supply output when the time difference is less than a preset threshold, the self-charging phenomenon can be identified and prevented.

Benefits of technology

It improves the reliability of the power supply device, prevents energy waste and heat generation caused by device self-charging, extends battery life, and ensures the safety and user experience of the device in multi-port concurrent working scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application provides a power supply control method and a power supply device, wherein the power supply control method includes: detecting the current power supply role of all ports of the power supply device; wherein the power supply role includes a power supply provider and a power receiving provider; in response to the simultaneous existence of at least one power supply provider and at least one power receiving provider among the current power supply roles of all ports, obtaining the timestamps corresponding to the power supply provider and the power receiving provider when determining their current power supply roles; calculating the time difference between the timestamp corresponding to the power supply provider and the timestamp corresponding to the power receiving provider; and in response to the time difference being less than a preset threshold, cutting off the power supply output of the port corresponding to the power supply provider.
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