Method for high-current rapid charging

摘要

A high-current rapid charging battery module for an electric vehicle including a case, one or more battery cells inside the case, a ventilation system that draws air upward through holes in the bottom of the case from the exterior of the vehicle, massive copper busbars, each busbar electrically connecting a positive lead on one battery cell to a negative lead on a different battery cell, an air flow cartridge between each pair of adjacent battery cells, and one or more fans arranged on top of one or more cells that blow air drawn upward through the holes in the bottom of the case away from the top of the battery module.

主权项

1. A method for high-current rapidly charging a battery module, comprising:
determining the internal resistance added to each cell in the battery module by a busbar connection at each terminal of a cell; calculating an overshoot voltage for the battery cell based on the internal resistance of each cell's busbar connection in the battery module; applying a high-current rapid charge current to the battery module; measuring the voltage across each cell in the battery module; and periodically reducing the current applied to the battery module if the measured voltage of the battery module cells exceeds the overshoot voltage plus the maximum recommended charge voltage for any cell in the battery module.