Patent ID: 9511670
Filing Date: 2016-12-06
CPC Classification: B60L,G01R,H01M,Y02E,Y02T

Claim Text:
1. A magnetic sensor assembly for determining state-of-charge of a battery cell, said sensor assembly comprising: a magnetic core including a C-shape loop of material, said core having two opposing end portions and two opposing side portions defining a central opening, said magnetic core further including a transverse opening through one of the side portions, said transverse opening accepting a portion of the battery cell extending therethrough so that the portion of the battery cell is positioned within the central opening; a driving coil wrapped around one of the end portions and being responsive to a driving signal that generates a magnetic field in the core that extends across the transverse opening and the portion of the battery cell; a receiving coil wrapped around the other end portion where the magnetic field in the core induces a current flow in the receiving coil; and a processor responsive to the current flow from the receiving coil, said processor being configured to convert the current flow in the receiving coil to a proportional magnetic signal indicative of the field strength of the magnetic field in the core and converting the magnetic signal to the state-of-charge of the battery cell.