Method and device for charged side detecting charging mode of exterior charging source
A charging method and charging power supply technology, applied in secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as inconvenient use for users, increase product cost, and slow response speed of logic circuits, etc., to increase costs and complexity, the effect of ensuring accuracy and reliability
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[0025] figure 1 It is a structural block diagram of the device for detecting the charging mode according to the present invention.
[0026] The device for detecting the charging mode includes:
[0027] The external charging power supply 101, where the output detection signals D+ and D- are short-circuited, the external charging power supply is a charger, otherwise it is a USB device;
[0028] The signal line characteristic control module 102 for transmitting the D+ signal on the charged side controls the pull-up, pull-down and floating characteristics of the signal line. The signal line characteristic control module 103 for transmitting the D-signal on the charged side controls the pull-up, pull-down and floating characteristics of the signal line. The signal line characteristics can be set by connecting pull-up resistors and pull-down resistors. Among them, the pull-down resistance is greater than or equal to twice the pull-up resistance, and the pull-down and pull-up resistanc...
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