公开(公告)号：US11476551B2

公开(公告)日：2022-10-18

申请号：US16048765

申请日：2018-07-30

申请人： 24M Technologies, Inc.

发明人： Matthew Russell Tyler ,  Ryan Michael Lawrence

IPC分类号： H01M10/00 ,  H01M50/581 ,  H01M50/502

摘要： Embodiments described herein relate to current interrupt devices (CIDs) for electrochemical cells that use a thermal trigger (e.g., shape memory and/or bi-metallic materials) to open an electrical circuit just prior to a thermal runaway or during short-circuit event to prevent catastrophic failure of the electrochemical cell. Embodiments include CIDs comprising a housing, a bus bar coupled to the housing, and a thermal trigger operably coupled to the bus bar. In some embodiments, the bus bar can include an engineered fracture site. In some embodiments, the thermal trigger is dimensioned and configured to deform at a predetermined temperature to break the bus bar at the engineered fracture site. In some embodiments, a portion of the bus bar travels about a hinge, opening the electrical circuit and preventing overcharging, thermal runaway, and/or other catastrophic failure events.

公开(公告)号：US12068486B2

公开(公告)日：2024-08-20

申请号：US17339326

申请日：2021-06-04

申请人： 24M Technologies, Inc.

发明人： Ryan Michael Lawrence ,  Naoki Ota

IPC分类号： H01M4/70 ,  H01M50/583

CPC分类号： H01M4/70 ,  H01M50/583

摘要： Embodiments described herein relate to electrochemical cells with one or more current collectors divided into segments, and methods of producing the same. A current collector divided into segments comprises a substantially planar conductive material including a connection region and an electrode region. The electrode region includes one or more dividers defining a plurality of electron flow paths. The plurality of electron flow paths direct the flow of electrons from the electrode region to the connection region. In some embodiments, the current collector includes a fuse section disposed between the electrode region and the connection region. In some embodiments, the fuse section can include a thin strip of conductive material, such that the thin strip of conductive material melts at a melting temperature and substantially prevent electron movement between the electrode region and the connection region.

公开(公告)号：US11469065B2

公开(公告)日：2022-10-11

申请号：US17371662

申请日：2021-07-09

申请人： 24M Technologies, Inc.

发明人： Ryan Michael Lawrence ,  Richard K. Holman

IPC分类号： H01H39/00 ,  H01H37/32 ,  H01M10/44 ,  H01M50/581

摘要： Embodiments described herein relate generally to a current interrupt device (CID) including a frangible bulb that is configured to be thermally triggered. In some embodiments, the CID includes a breaking contact electrically coupled to a fixed contact and held in electrical contact by the frangible bulb. In some embodiments, the frangible bulb is configured to break at a temperature threshold. In some embodiments, the breaking contact is configured to bend, rotate and/or otherwise deform about a hinge point in order to become electrically disconnected from the fixed contact when the frangible bulb breaks. In some embodiments, opening the electrical circuit between the breaking contact and the fixed contact may prevent overcharging, overvoltage conditions, overcurrent conditions, thermal runaway, and/or other catastrophic failure events.

公开(公告)号：US20240178502A1

公开(公告)日：2024-05-30

申请号：US18519797

申请日：2023-11-27

申请人： 24M Technologies, Inc.

发明人： Naoki Ota ,  Junzheng Chen ,  Mark Young ,  Chad Alan Hartzog ,  Ryan Michael Lawrence ,  Kelly B. Ledbetter ,  Khosrow Nematollahi

IPC分类号： H01M50/264 ,  H01M50/211 ,  H01M50/291

CPC分类号： H01M50/264 ,  H01M50/211 ,  H01M50/291

摘要： Embodiments described herein relate to electrochemical cell assemblies with structural members for application of compressive force. In some aspects, an electrochemical cell assembly can include a plurality of electrochemical cells arranged in a stack, a first planar sheet in contact with a first side of the stack, a second planar sheet in contact with a second side of the stack, a first structural member in compressive contact with the first planar sheet, and a second structural member in compressive contact with the second planar sheet, wherein the compressive contact between the first structural member and the first planar sheet and the compressive contact between the second structural member and the second planar sheet collectively provide structural rigidity to the electrochemical cell assembly.

公开(公告)号：US11094487B2

公开(公告)日：2021-08-17

申请号：US16450231

申请日：2019-06-24

申请人： 24M Technologies, Inc.

发明人： Ryan Michael Lawrence ,  Richard K. Holman

IPC分类号： H01H37/32 ,  H01M10/44 ,  H01H39/00 ,  H01M50/581

摘要： Embodiments described herein relate generally to a current interrupt device (CID) including a frangible bulb that is configured to be thermally triggered. In some embodiments, the CID includes a breaking contact electrically coupled to a fixed contact and held in electrical contact by the frangible bulb. In some embodiments, the frangible bulb is configured to break at a temperature threshold. In some embodiments, the breaking contact is configured to bend, rotate and/or otherwise deform about a hinge point in order to become electrically disconnected from the fixed contact when the frangible bulb breaks. In some embodiments, opening the electrical circuit between the breaking contact and the fixed contact may prevent overcharging, overvoltage conditions, overcurrent conditions, thermal runaway, and/or other catastrophic failure events.