Wireless earphone charging system and wireless earphones in system

Abstract

The invention relates to the field of earphone charging, in particular to a wireless earphone charging system and wireless earphones in the system. When the wireless earphones are inserted into a charging box for charging, the charging box charges an energy storage unit in the wireless earphones, and during charging, a main chip in the wireless earphones is dormant to save power; after the energystorage unit is fully charged, a charging control unit in the wireless earphones also sleeps to avoid the power consumption caused by the converted voltage, and therefore the storage time of the powerin the charging box is prolonged; when the charging control unit is dormant, since a power supply terminal is electrically connected with a wake-up pin of the main chip, the level of the wake-up pinis kept at the non-awake level provided by the power supply terminal, so the main chip remains dormant; and when the earphones are removed from the charging box, the wake-up pin leaves the power supply terminal, the level thereof becomes a self-connected wake-up level, so that the main chip wakes up, the earphones are turned on, and the non-inductive operation of the user is completed.

Description

technical field [0001] The invention relates to the field of earphone charging, in particular to a wireless earphone charging system and a wireless earphone in the system. Background technique [0002] With the release of Apple airpot, TWS headset 2 is becoming more and more popular. [0003] See figure 1 , Most of the existing TWS earphones 2 are charged by the charging box 1 . When charging, the TWS earphone 2 is inserted into the charging box 1, and the charging box 1 provides 5V power supply to the TWS earphone 2, and the charging control unit 21 (such as a buck circuit) in the TWS earphone 2 converts the 5V voltage into a 3.7V voltage to supply the TWS earphone. The storage battery 22 in 2 is charged. During the charging process, the Bluetooth chip 23 in the TWS earphone 2 automatically sleeps. [0004] When the TWS earphone 2 is taken out of the charging box 1, the charging voltage between the TWS earphone 2 and the charging box 1 is disconnected, and the charging ...

AI Technical Summary

Problems solved by technology

[0005] However, as long as the existing TWS earphone 2 is placed in the charging box 1, the charging box 1 will always charge the TWS earphone 2 regardless of whether the battery 22 is fully charged. Loss (such as inductance loss, switch loss), the TWS earphone 2 has been consuming the power of the charging box 1, causing the TWS earphone 2 to be used for a short period of one month, and the power of the entire charging box 1 is exhausted

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