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  • NOVEL BATTERY SYSTEMS BASED ON TWO-ADDITIVE ELECTROLYTE SYSTEMS INCLUDING 2-FURANONE, AND METHOD OF FORMATION PROCESS OF SAME
    Publication number: 20190280333
    Abstract: Improved battery systems have been developed for lithium-ion based batteries. The improved battery systems consist of two-additive mixtures in an electrolyte solvent. Such battery systems are prepared by assembling a positive electrode and a negative electrode in the sealed cell, removing residual water from the sealed cell, filling the sealed cell with a nonaqueous electrolyte under an inert atmosphere, vacuum-sealing the sealed cell, carrying out a formation process comprising charging and discharging the sealed cell until the sealed cell achieves an initial capacity. The nonaqueous electrolyte includes lithium ions, a first nonaqueous solvent comprising a carbonate solvent, a second nonaquaeous solvent comprising methyl acetate, and an additive mixture of a first operative additive of either vinylene carbonate or fluoroethylene carbonate and a second operative additive of 2-furanone. Gas formation is suppressed in the battery system during the formation process.
    Type: Application
    Filed: July 5, 2018
    Publication date: September 12, 2019
    Applicant: Tesla Motors Canada ULC
    Inventors: Jeffery Raymond Dahn, Xiaowei Ma
  • Battery systems based on two-additive electrolyte systems including 2-furanone, and method of formation process of same
    Patent number: 11824160
    Abstract: Improved battery systems have been developed for lithium-ion based batteries. The improved battery systems consist of two-additive mixtures in an electrolyte solvent. Such battery systems are prepared by assembling a positive electrode and a negative electrode in the sealed cell, removing residual water from the sealed cell, filling the sealed cell with a nonaqueous electrolyte under an inert atmosphere, vacuum-sealing the sealed cell, carrying out a formation process comprising charging and discharging the sealed cell until the sealed cell achieves an initial capacity. The nonaqueous electrolyte includes lithium ions, a first nonaqueous solvent comprising a carbonate solvent, a second nonaquaeous solvent comprising methyl acetate, and an additive mixture of a first operative additive of either vinylene carbonate or fluoroethylene carbonate and a second operative additive of 2-furanone. Gas formation is suppressed in the battery system during the formation process.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: November 21, 2023
    Assignees: Tesla, Inc., Panasonic Holdings Corporation
    Inventors: Jeffery Raymond Dahn, Xiaowei Ma
  • Attractor for PMA wireless charging type wireless power reception module and manufacturing method therefor, and wireless power reception module having same
    Patent number: 10574089
    Abstract: Provided are an attractor for PMA wireless charging type wireless power reception module and a manufacturing method thereof, and a wireless power reception module having the same. The attractor for PMA wireless charging type wireless power reception module according to an embodiment of the present invention comprises: a wireless power reception module; and a thin magnetic piece formed of a magnetic material having a saturation magnetic flux density of 0.5 tesla or more such that a change in the voltage value of a hall sensor of a certain value or more can be detected in both an aligned state when a wireless power transmission module is aligned and a non-aligned state when the wireless power reception module is not in line with the wireless power transmission module within a non-alignment region having a certain area including the aligned state.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: February 25, 2020
    Assignee: AMOSENSE CO., LTD.
    Inventors: Chun Gul Lee, Kil Jae Jang, Dong Hoon Lee, Min Sik Jang, Ki Chul Kim, Jong Ho Park
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