Low-power-consumption circuit structure for Bluetooth earphone

By working together with the low-battery automatic selection circuit and the volume control circuit, combined with the voice control unit, the problem of intelligent energy saving in Bluetooth headsets when the battery is low is solved, achieving imperceptible battery life extension and prevention of accidental triggering, thus improving the user experience.

CN223967969UActive Publication Date: 2026-03-03BESING TECH SHENZHEN CO LTD
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Patent Information

Application Number
CN202520625050.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-03-03
Estimated Expiration
2035-04-03

AI Technical Summary

Technical Problem

Existing Bluetooth headphones require users to manually switch to low-power mode when the battery is low, which affects the listening experience. Furthermore, they are prone to unnecessary power consumption due to accidental triggering during light sleep.

Method used

The system employs a low-power automatic selection circuit that works in conjunction with a volume control circuit to automatically reduce the volume and switch to a low-power mode. Combined with a voice control unit, it prevents accidental triggering and achieves intelligent energy saving through voltage monitoring and voice recognition technology.

Benefits of technology

It achieves imperceptible battery life extension when the battery is low, making it especially suitable for light sleep scenarios, reducing power consumption from accidental triggers, and improving the user experience.

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Abstract

The utility model discloses a low-power-consumption circuit structure for a Bluetooth earphone, which comprises a control module for selecting the use mode of the Bluetooth earphone and an endurance module for switching to low energy consumption of the Bluetooth earphone according to the control module, and the control module is electrically connected with the endurance module; according to the utility model, through the synergistic effect of the low electric quantity automatic selection circuit and the volume control circuit, the low energy consumption mode is automatically triggered and the music volume is reduced when the electric quantity is detected to be lower than a threshold value, the reduction amplitude is about 30-50%, and the non-perception endurance is prolonged. Compared with a traditional manual switching mode, endurance time can be prolonged additionally, the system is especially suitable for continuous playing requirements in a light sleep scene, a dual verification mechanism of the voice control unit and voice instructions of the electret microphone and the LD3320 voice recognition chip are adopted to improve recognition precision, a trigger circuit composed of an STM32 microcontroller and a relay is matched, and the system is simple in structure and convenient to use. The false touch rate of the touch sensor is reduced, and unnecessary power consumption caused by false touch can be avoided.
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