Battery disconnect unit

Abstract

A battery disconnect unit for use in transportation equipment including a battery and a load includes a pyrofuse, a mechanical relay including a first contact and a second contact, a current sensor, and a disconnection control circuit connected to the current sensor and the pyrofuse. The current sensor outputs a current value of a current flowing in a current path between the battery and the load, to the disconnection control circuit. The disconnection control circuit outputs an ignition signal to the pyrofuse based on the current value. The pyrofuse disconnects the current path by the ignition signal, and the mechanical relay is turned on and off by a control signal from outside of the battery disconnect unit.

Dependencies are inferred from the claim text.