System and method for a battery pack output contactor

摘要

Systems and methods for controlling the output of a battery pack are disclosed. In one example, a battery pack contactor is closed after receiving a request to open the battery pack contactor during a power-up sequence. The system and method may reduce battery pack degradation.

主权项

1. A method for controlling output of a battery pack having a battery control module and a battery pack output contactor, comprising:
initializing the battery control module from a running reset or hardware power-up; receiving a first contactor control request since the initialization of the battery control module, the first contactor control request from a controller external to the battery pack and indicating a request to open or close the battery pack output contactor, the battery pack output contactor remaining open irrespective of the first contactor control request; receiving a subsequent contactor control request from the controller external to the battery pack after the first contactor control request, the subsequent contactor control request a request to close the battery pack output contactor; and closing the battery pack output contactor in response to the subsequent contactor control request only in response to the first contactor control request being a contactor open request.