SYSTEMS, METHODS, AND DEVICES FOR CONSTANT CURRENT RELAY CONTROL OF A BATTERY MODULE

摘要

A battery module may include a housing, a plurality of battery cells disposed in the housing, a battery terminal extending from the battery module for coupling the battery module with electrical components in the vehicle, and a contactor. A voltage supplied to a relay coil in the contactor may generate a magnetic field to actuate a contactor switch. The battery module may also include a printed circuit board (PCB) disposed in the housing. The PCB may include a relay control circuit configured to control a current flowing across the relay coil, and the relay control circuit may operate in a pull-in mode to transition the contactor switch into a closed position and in a hold mode to maintain the contactor switch in the closed position.

主权项

1. A battery module for use in a vehicle, comprising:
a housing; a plurality of battery cells disposed in the housing; a battery terminal extending from the battery module for coupling the battery module with electrical components in the vehicle; a contactor comprising:
a contactor switch, wherein the contactor is configured to electrically couple the plurality of battery cells to the battery terminal when the contactor switch is in a closed position;a relay coil configured to receive a voltage on a high-side input and to output the voltage on a low-side output, wherein the voltage supplied to the relay coil generates a magnetic field to actuate the contactor switch; anda printed circuit board (PCB) disposed in the housing, wherein the PCB comprises a relay control circuit configured to control a current flowing across the relay coil, wherein the relay control circuit is configured to operate in a pull-in mode to transition the contactor switch into a closed position and in a hold mode to maintain the contactor switch in the closed position.