A mobile terminal that can reduce the interference of the antenna to the battery protection board

Abstract

The invention discloses a mobile terminal capable of reducing interference of an antenna to a battery protection board. The mobile terminal comprises a printed circuit board and the antenna and a battery which are respectively and electrically connected to the printed circuit board; the battery comprises a cell and the battery protection board; and the cell is electrically connected to the printed circuit board by the battery protection board. A first side edge of the printed circuit board, which is adjacent to the battery protection board, is provided with a protection groove; and the protection groove runs through the printed circuit board and is provided with an opening portion towards the battery protection board. Therefore, according to the mobile terminal provided by the invention, current distribution on the printed circuit board is changed by the protective groove, so that coupling between the printed circuit board and the battery protection board is controlled, and interference of the printed circuit board to the battery protection board is reduced.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a mobile terminal capable of reducing the interference of an antenna to a battery protection board. Background technique [0002] At present, the batteries used in most mobile terminals include batteries and battery protection boards. The battery protection board is an important component in mobile terminals. It is an integrated circuit board that prevents the battery from short circuit, overcharge or overdischarge. When the electrode voltage of the battery is lower than the preset lower limit, or when the battery is short-circuited during the discharge process, or when the battery electrode voltage is higher than the preset upper limit during the charging process, the battery protection board will be cut off. Open the connection of the battery and other devices to protect the battery and other devices. [0003] With the development of technology in the field of mobile termi...

AI Technical Summary

Problems solved by technology

Among them, in many mobile terminal designs, the battery protection board is set near the antenna. For example, the battery protection board and the antenna are set on one side of the mobile terminal, which makes the battery protection board extremely susceptible to interference from the antenna.

Especially when the signal received by the mobile terminal is weak, the printed circuit board where the antenna is located will generate a large current on the battery protection board through current coupling because the antenna needs to work at a higher power to ensure the progress of the call. , it is likely to trigger the battery protection board to disconnect the battery from other devices, causing the mobile terminal to shut down

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