US 12,233,738 B2
Battery preconditioning systems and methods for electric-drive vehicles
Sumit Chopra, Ann Arbor, MI (US); Matthew L. Ehrenfeld, Davison, MI (US); and Orlando Ward-Santos, Berkeley, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Nov. 1, 2021, as Appl. No. 17/515,830.
Prior Publication US 2023/0137357 A1, May 4, 2023
Int. Cl. H02J 7/00 (2006.01); B60L 53/62 (2019.01); B60L 53/66 (2019.01); B60L 58/12 (2019.01); H02J 7/14 (2006.01)
CPC B60L 53/665 (2019.02) [B60L 53/62 (2019.02); B60L 58/12 (2019.02); H02J 7/0048 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating a battery system of a motor vehicle, the battery system including a battery, a system controller, and a thermal system, the method comprising:
receiving, via the system controller, a recharge signal indicating a request to schedule a recharge event for the battery of the battery system at a selected battery charging station;
determining, via the system controller responsive to receipt of the recharge signal, a target preconditioning temperature devised to optimize the recharge event of the battery;
determining a present state of voltage (SOV) or state of charge (SOC) for the battery at a vehicle location of the motor vehicle;
estimating a predicted SOV or SOC for the battery upon arrival of the motor vehicle at a charging station location, distinct from the vehicle location, of the battery charging station, the estimating the predicted SOV or SOC including forecasting a predicted SOV or SOC battery expenditure to drive the motor vehicle from the vehicle location to the charging station location;
estimating a predicted battery preconditioning time to thermally precondition the battery to the target preconditioning temperature using the predicted SOV or SOC; and
transmitting, via the system controller to the thermal system, a preconditioning signal to precondition the battery based on the present SOV or SOC, the target preconditioning temperature, and the predicted battery preconditioning time.