MASTER-SLAVE MULTI-PHASE CHARGING

摘要

A battery charging circuit comprises two or more charging circuits, each capable of charging a battery. The charging outputs of the charging circuits are connected together and can be connected to a battery to provide fast charging of the battery. The charging circuits can be configured so that they do not adversely interfere with each other during battery charging.

主权项

1. A battery charging circuit comprising:
first and second charging circuits, each charging circuit having a charging output connectable to a battery and comprising: a voltage regulator to provide power to the charging output; a battery voltage threshold value; and a controller operable to change a charging state of a battery charging operation based on a detected battery voltage relative to the battery voltage threshold value, the charging output of the first charging circuit connected with the charging output of the second charging circuit, the battery voltage threshold value of the first charging circuit set to a higher value than the battery voltage threshold value of the second charging circuit so that the battery charging operation in the second charging circuit terminates prior to the battery charging operation in the first charging circuit.