System and method for energy prediction in battery packs

摘要

In an embodiment, a system includes a battery management unit (BMU) coupled to a battery pack of an xEV. Further, the BMU is configured to determine an energy remaining value for the battery pack based, at least in part, on a minimum cell temperature and a minimum cell state of charge percentage (SOC %) determined by the BMU for the battery pack.

主权项

1. A battery management unit (BMU) system communicatively coupled to a plurality of sensors respectively associated with a plurality of battery cells of a battery pack of an xEV, wherein the BMU system is configured to:
receive, from the plurality of sensors, a first plurality of signals and a second plurality of signals, wherein each of the first plurality of signals is indicative of a present temperature of a respective one of the plurality of battery cells and wherein each of the second plurality of signals is indicative of a present state of charge (SOC) of the respective one of the plurality of battery cells; determine a plurality of temperatures based on the first plurality of signals, wherein each of the plurality of temperatures respectively corresponds to a present battery cell temperature of a single battery cell of the plurality of battery cells; determine a plurality of SOC percentages based on the second plurality of signals, wherein each of the plurality of SOC percentages respectively corresponds to a present SOC percentage of a single one of the plurality of battery cells; determine a lowest cell temperature from the plurality of temperatures and a lowest cell SOC percentage from the plurality of SOC percentages; and determine an energy remaining value for the battery pack based on the lowest cell temperature and the lowest cell SOC percentage.