公开(公告)号：US20240283047A1

公开(公告)日：2024-08-22

申请号：US18442872

申请日：2024-02-15

Applicant: ROLLS-ROYCE PLC

Inventor： Matthew DOBSON

IPC: H01M10/63 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6568

CPC classification number: H01M10/63 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6568 ,  H01M2220/20

Abstract: Battery packs, which may be used in vehicles, include: a plurality of battery cells; one or more flow control devices; and sensing and control circuitry configured to: measure one or more parameters indicative of an onset of thermal runaway of one or more of the plurality of cells; determine, based on a change in one or more of the measured parameters, that one or more of the plurality of battery cells has begun or is at risk of beginning thermal runaway; and activate one or more of the flow control devices in response to the determination. Each of the one more flow control devices is configured to, when activated, direct a flow of fluid past one or more of the plurality of cells to cool the cells and/or carry media vented by one or more of the cells following a thermal runaway event away from the one or more cells.

公开(公告)号：US20240283079A1

公开(公告)日：2024-08-22

申请号：US18442822

申请日：2024-02-15

Applicant: ROLLS-ROYCE PLC

Inventor： István ÖRÖKÖS-TÓTH ,  Daniel LORINCZ ,  Kolos HASZNOSI ,  Mark ANKA ,  Andras LUKACS ,  Matthew DOBSON ,  Stene CHARMER ,  Elliott READ ,  James MARCO

IPC: H01M50/293 ,  H01M50/213 ,  H01M50/249 ,  H01M50/35 ,  H01M50/375

CPC classification number: H01M50/293 ,  H01M50/213 ,  H01M50/35 ,  H01M50/375 ,  H01M50/249 ,  H01M2220/20

Abstract: A battery pack includes: a plurality of cylindrical battery cells, each one of the plurality of cells having a cylindrical outer cell wall that extends in a z-direction between opposed first and second ends of the cell; a carrier structure that locates the battery cells relative to one another and arranges them in an array in an x-y plane perpendicular to the z-direction; and a plurality of barriers for preventing propagation of thermal runaway between cells of the array, each one of the plurality of barriers forming a barrier wall that surrounds a group of one or more of the cells. A gap is defined between the barrier wall of each respective barrier and the outer cell wall of each of the respective one or more cells enclosed by the respective barrier.

公开(公告)号：US20250033531A1

公开(公告)日：2025-01-30

申请号：US18773939

申请日：2024-07-16

Applicant: Rolls-Royce plc

Inventor： Matthew DOBSON

IPC: B60L58/26

Abstract: There is disclosed an energy storage system for an electric aircraft, the energy storage system comprising: at least one battery pack configured to be disposed onboard the aircraft, and a thermal management system. The thermal management system comprises a first circulation loop configured to be disposed onboard the aircraft and configured to contain a first working fluid, the first circulation loop including: a variable speed pump configured to pump the first working fluid around the first circulation loop, a battery heat exchanger configured to provide a thermal interface between the at least one battery pack and the first working fluid, and a controller configured to control operation of the variable speed pump to intermittently pump the first working fluid to distribute heat around the thermal management system.