公开(公告)号：US20190036101A1

公开(公告)日：2019-01-31

申请号：US16048765

申请日：2018-07-30

Applicant: 24M Technologies, Inc.

Inventor： Matthew Russell TYLER ,  Ryan Michael LAWRENCE

IPC: H01M2/34 ,  H01M2/20

Abstract: 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：US20230238562A1

公开(公告)日：2023-07-27

申请号：US18101323

申请日：2023-01-25

Applicant: 24M Technologies, Inc.

Inventor： Yuki KUSACHI ,  Junzheng CHEN ,  Naoki OTA ,  Bradley Richard MILESON ,  Matthew Bonju LIM ,  Ryan Michael LAWRENCE

IPC: H01M10/04

CPC classification number: H01M10/0404 ,  H01M2010/4292

Abstract: Embodiments described herein relate to electrochemical cells and production thereof under high pressure. In some aspects, a method of producing an electrochemical cell can include disposing a cathode material onto a cathode current collector to form a cathode, disposing an anode material onto an anode current collector to form an anode, and disposing the anode onto the cathode in an assembly jig with a separator positioned between the anode and the cathode to form an electrochemical cell, the assembly jig applying a force to the electrochemical cell such that a pressure in the cathode material is at least about 3,500 kPa. In some embodiments, the cathode material can be a first cathode material, and the method can further include disposing a second cathode material onto the first cathode material. In some embodiments, the first cathode material can include silicon. In some embodiments, the second cathode material can include graphite.

公开(公告)号：US20190393477A1

公开(公告)日：2019-12-26

申请号：US16450231

申请日：2019-06-24

Applicant: 24M Technologies, Inc.

Inventor： Ryan Michael LAWRENCE ,  Richard K. HOLMAN

IPC: H01M2/34 ,  H01M10/44 ,  H01H39/00

Abstract: 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：US20240429399A1

公开(公告)日：2024-12-26

申请号：US18760721

申请日：2024-07-01

Applicant: 24M Technologies, Inc.

Inventor： Ryan Michael LAWRENCE ,  Naoki OTA

IPC: H01M4/70 ,  H01M50/583

Abstract: 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：US20230282906A1

公开(公告)日：2023-09-07

申请号：US18118416

申请日：2023-03-07

Applicant: 24M Technologies, Inc.

Inventor： Junzheng CHEN ,  Naoki OTA ,  Ryan Michael LAWRENCE ,  Jeffry DISKO ,  Chad Alan HARTZOG

IPC: H01M10/658 ,  H01M50/117 ,  H01M50/119 ,  H01M10/6563 ,  H01M10/48 ,  H01M10/6551 ,  H01M50/128

CPC classification number: H01M10/658 ,  H01M50/117 ,  H01M50/119 ,  H01M10/6563 ,  H01M10/486 ,  H01M10/6551 ,  H01M50/128

Abstract: Embodiments described herein relate to electrochemical cells and electrochemical cell systems with thermal insulation systems, and methods of producing the same. An electrochemical cell can include an anode material disposed on an anode current collector, a cathode material disposed on a cathode current collector, a separator disposed between the anode material and the cathode material, and an insulating structure disposed around and containing the anode material, anode current collector, cathode material, cathode current collector, and the separator. The anode material and/or the cathode material includes a semi-solid electrode material. The semi-solid electrode material includes an active material and a conductive material in a liquid electrolyte. The liquid electrolyte has an electrolyte salt concentration of at least about 2.0 M. In some embodiments, the insulating structure includes a frame with a first wall and a second wall disposed therein.

公开(公告)号：US20230090853A1

公开(公告)日：2023-03-23

申请号：US17944602

申请日：2022-09-14

Applicant: 24M Technologies, Inc.

Inventor： Matthew Russell TYLER ,  Ryan Michael LAWRENCE

IPC: H01M50/581 ,  H01M50/505 ,  H01M50/522

Abstract: 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：US20240380061A1

公开(公告)日：2024-11-14

申请号：US18655863

申请日：2024-05-06

Applicant: 24M Technologies, Inc.

Inventor： Jacob ZIMMERMAN ,  Ryan Michael LAWRENCE

IPC: H01M50/342 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/105 ,  H01M50/186 ,  H01M50/197 ,  H01M50/198

Abstract: Embodiments described herein relate to electrochemical devices and electrochemical cells with vents and venting mechanisms. In some aspects, an electrochemical device can include an anode disposed on an anode current collector, a cathode disposed on a cathode current collector, a separator disposed between the anode and the cathode, a first film disposed on the anode current collector and having outer edges extending beyond outer edges of the anode current collector, and a second film disposed on the cathode current collector and having outer edges extending beyond outer edges of the cathode current collector, the second film bonded to the first film along a sealing region to form a pouch, the pouch having an internal pressure, the sealing region including a first portion and a second portion, the second portion configured to fail at a lower internal pressure than the first portion.

公开(公告)号：US20230133464A1

公开(公告)日：2023-05-04

申请号：US17975115

申请日：2022-10-27

Applicant: 24M Technologies, Inc.

Inventor： Naoki OTA ,  Junzheng CHEN ,  Raymond ZAGARS ,  Jeffry DISKO ,  Ryan Michael LAWRENCE

IPC: H01M50/211 ,  H01M50/105 ,  H01M50/46 ,  H01M50/466 ,  H01M10/647 ,  H01M10/6551 ,  H01M10/48 ,  H01M50/30

Abstract: Embodiments described herein include electrochemical cell modules. In some aspects, an electrochemical cell module includes a first electrochemical cell and a second electrochemical cell. The first electrochemical cell includes an anode material disposed on an anode current collector, a cathode material disposed on a cathode current collector, a separator disposed between the anode material and the cathode material, and a pouch material disposed on the anode current collector and the cathode current collector. The separator extends beyond the anode material and the cathode material and the pouch material extends beyond the separator. The portion of the separator that extends beyond the outer edge of the anode material and the cathode material and the portion of the pouch material that extends beyond the outer edge of the separator are folded at an angle of about 80 degrees to about 110 degrees with respect to the anode material and the cathode material.

公开(公告)号：US20210384516A1

公开(公告)日：2021-12-09

申请号：US17339326

申请日：2021-06-04

Applicant: 24M Technologies, Inc.

Inventor： Ryan Michael LAWRENCE ,  Naoki OTA

IPC: H01M4/70 ,  H01M50/583

Abstract: 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：US20240047772A1

公开(公告)日：2024-02-08

申请号：US18228920

申请日：2023-08-01

Applicant: 24M Technologies, Inc.

Inventor： Chad Alan HARTZOG ,  Mark YOUNG ,  Ryan Michael LAWRENCE ,  Junzheng CHEN ,  Naoki OTA

IPC: H01M10/48 ,  H01M50/531 ,  G01R31/392 ,  G01R31/3835

CPC classification number: H01M10/48 ,  H01M50/531 ,  G01R31/392 ,  G01R31/3835

Abstract: In some aspects, a method of monitoring health of an electrochemical cell can include measuring a first anode voltage at a first anode tab from the plurality of anode tabs and a second anode voltage at a second anode tab from the plurality of anode tabs; measuring a first cathode voltage at a first cathode tab from the plurality of cathode tabs and a second cathode voltage at a second cathode tab from the plurality of cathode tabs; and calculating a first sense voltage, the first sense voltage being a difference between the first cathode voltage and the first anode voltage. In some embodiments, a second sense voltage can be calculated, the second sense voltage being a difference between the second cathode voltage and the second anode voltage. In some embodiments, a difference between the first sense voltage and the second sense voltage can be calculated.