Cable Protection Device

摘要

One embodiment of a disclosed cable protection device connected between the positive and negative wires of the cable that provides an efficient method of protection from overheating of the device due to changes in temperatures with minimal power dissipation. The cable protection device includes a temperature monitoring device that continuously senses the temperature of the cable and device to check for overheating. A controller connected to the temperature monitor sends out an alarm message and a control signal to either an actuator circuit or a crowbar function circuit. The actuator circuit can send out current pulses to the adapter indicating the adapter to lower its current limit, so that the device can still keep charging and is not over heated. The crowbar function circuit causes the adapter to turn off power to the cable in order to provide burning of the device or connector due to overheating.

主权项

1. A method for protecting a charging cable, the method comprising:
monitoring a temperature of a power supply cable; comparing the monitored temperature to a second threshold; activating a crowbar circuit when the monitored temperature exceeds the second threshold to turn off power supply to the charging cable; comparing the monitored temperature to a first threshold; and sending sink current pulses including a current limit to an adapter of the charging cable when the monitored temperature exceeds the first threshold, wherein the sink pulses are at a current value lower than the current limit of the adapter.