US 11,691,535 B2
Method for improving life span of a battery
Daniel Sundqvist, Uppsala (SE)
Assigned to CTEK SWEDEN AB, Vikmanshyttan (SE)
Filed by CTEK Sweden AB, Vikmanshyttan (SE)
Filed on Apr. 6, 2021, as Appl. No. 17/223,182.
Claims priority of application No. 2050407-2 (SE), filed on Apr. 9, 2020.
Prior Publication US 2021/0316634 A1, Oct. 14, 2021
Int. Cl. B60L 58/12 (2019.01); B60L 53/62 (2019.01); H02J 7/00 (2006.01)
CPC B60L 58/12 (2019.02) [B60L 53/62 (2019.02); H02J 7/0048 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A method performed by battery charger configured to charge a vehicle battery, the method comprising:
initiating, at a first point in time (t_Bulk_Start), charging of the battery in a bulk charging mode,
determining, at a second point in time (t_Bulk_End) subsequent to the first point in time (t_Bulk_Start), that the charging of the battery in the bulk charging mode is completed,
estimating, at the second point in time (t_Bulk_End), a state of charge of the battery at the first point in time (t_Bulk_Start) when the charging of the battery in a bulk charging mode was initiated,
initiating charging of the battery in a subsequent charging mode using the estimated state of charge (SoC_Bulk_Start), wherein the subsequent charging mode is selected from an absorption charging mode and a float charging mode.