Wireless headset charging system and wireless headset in the system

Abstract

The invention relates to the field of earphone charging, in particular to a wireless earphone charging system and a wireless earphone in the system. When the wireless earphone is inserted into the charging box for charging, the charging box charges the energy storage unit in the wireless earphone. During the charging process, the wireless earphone The main chip of the wireless headset goes to sleep to save power; after the energy storage unit is fully charged, the charging control unit in the wireless headset also goes to sleep to avoid the power loss caused by the conversion voltage, so the storage time of the power in the charging box can be extended; When the charging control unit is in sleep mode, since the power supply terminal is electrically connected to the wake-up pin of the main chip, the level of the wake-up pin remains at the non-wake-up level provided by the power supply terminal, so the main chip remains in sleep mode. Out of the charging box, the wake-up pin leaves the power supply terminal, and its level becomes a self-connected wake-up level, which wakes up the main chip, turns on the earphones, and completes the user's non-inductive operation.

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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