US 12,403,780 B2
Low cost fast charge contactor for high voltage battery management systems
Anil Paryani, Cerritos, CA (US); Andrew Almendares, Long Beach, CA (US); Jacob Swanson, Los Angeles, CA (US); Garrett Heinen, Long Beach, CA (US); and Isaac Ng, San Gabriel, CA (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Jun. 5, 2023, as Appl. No. 18/206,006.
Application 18/206,006 is a continuation of application No. PCT/US2021/019251, filed on Feb. 23, 2021.
Claims priority of provisional application 63/121,344, filed on Dec. 4, 2020.
Prior Publication US 2023/0311678 A1, Oct. 5, 2023
Int. Cl. B60L 50/60 (2019.01); B60L 53/10 (2019.01); B60L 53/16 (2019.01); B60L 53/60 (2019.01)
CPC B60L 53/11 (2019.02) [B60L 50/60 (2019.02); B60L 53/16 (2019.02); B60L 53/60 (2019.02); B60L 2250/16 (2013.01); B60L 2260/20 (2013.01); E05Y 2400/10 (2013.01); E05Y 2900/53 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A battery management system (BMS) of a vehicle, the BMS connected to a battery having a positive end and a negative end, the BMS also connected to a fast charger, the battery powers a main load, the vehicle having a lockable charge port door, the BMS comprising:
a battery management controller protection circuit board (PCB) configured to manage an operation of the battery;
a charger controller PCB configure to control fast charging of the battery;
a first contactor positioned between a positive end of the battery and the main load;
a second contactor positioned between a negative end of the battery and the main load; and
a fast charge (FC) contactor positioned between one of the first contactor and the second contactor and the fast charger;
wherein the fast charge contactor is configured to disconnect the fast charger from the battery when the first contactor and the second contactor are both in closed state; and
wherein the BMS is configured to determine a location of an isolation fault by connecting and disconnecting one or more resistors.