US 12,322,989 B2
Battery pack with parallel conductor routing
Jacob H. Friedrich, Willoughby, OH (US); Robert J. Heydel, Jr., Clawson, MI (US); and Luke R. Barton, Beverly Hills, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Apr. 11, 2022, as Appl. No. 17/717,274.
Prior Publication US 2023/0327462 A1, Oct. 12, 2023
Int. Cl. H02J 7/00 (2006.01); B60L 50/60 (2019.01); B60L 58/19 (2019.01)
CPC H02J 7/0024 (2013.01) [B60L 50/66 (2019.02); B60L 58/19 (2019.02)] 20 Claims
OG exemplary drawing
 
1. A propulsion battery pack for use with a direct current (DC) voltage bus aboard a motor vehicle, comprising:
a battery disconnect unit (BDU) operable for controlling a connection state of the propulsion battery pack with respect to the DC voltage bus, wherein the propulsion battery back is connected to, and provides a total battery current to, a rotary electric machine of the motor vehicle for propelling the motor vehicle;
a first battery section having a first battery module and a second battery module each having a corresponding plurality of electrochemical battery cells, wherein the first battery module is connected in a fixed series arrangement with the second battery module;
a second battery section connected in a fixed parallel arrangement with the first battery section, the second battery section having a third battery module and a fourth battery module each having another corresponding plurality of electrochemical battery cells, wherein the third battery module is connected in a fixed series arrangement with the fourth battery module; and
six transfer conductors constructed as flat busbars and collectively interconnecting the first battery section, the second battery section, and the BDU, wherein a total battery current of the battery pack is divided equally between the first battery section and the second battery section, and wherein each of the six transfer conductors is rated for half of the total battery current.