IMPROVED SEPARATORS, BATTEREIES SYSTEMS, VEHICLES, AND RELATED METHODS

    公开(公告)号:EP3411916A1

    公开(公告)日:2018-12-12

    申请号:EP17744931.1

    申请日:2017-01-27

    申请人: Celgard LLC

    IPC分类号: H01M2/16 H01M10/44 B32B27/08

    摘要: Improved battery separators, base films or membranes, batteries, cells, devices, systems, vehicles, and/or methods of making and/or using such separators, films or membranes, batteries, cells, devices, systems, vehicles, and/or methods of enhancing battery or cell charge rates, charge capacity, and/or discharge rates, and/or methods of improving batteries, systems including such batteries, vehicles including such batteries and/or systems, and/or the like; biaxially oriented porous membranes, composites including biaxially oriented porous membranes, biaxially oriented microporous membranes, biaxially oriented macroporous membranes, battery separators with improved charge capacities and the related methods and methods of manufacture, methods of use, and the like; flat sheet membranes, liquid retention media; dry process separators; biaxially stretched separators; dry process biaxially stretched separators having a thickness range between about 5 μm and 50 μm, preferably between about 10 μm and 25 μm, having improved strength, high porosity, and unexpectedly and/or surprisingly high charge capacity, such as, for example, high 10 C rate charge capacity; separators or membranes with high charge capacity and high porosity, excellent charge rate and/or charge capacity performance in a rechargeable and/or secondary lithium battery, such as a lithium ion battery, for high power and/or high energy applications, cells, devices, systems, and/or vehicles, and/or the like; single or multiple ply or layer separators, monolayer separators, trilayer separators, composite separators, laminated separators, co-extruded separators, coated separators, 1 C or higher separators, at least 1 C separators, batteries, cells, systems, devices, vehicles, and/or the like; improved microporous battery separators for secondary lithium batteries, improved microporous battery separators with enhanced or high charge (C) rates, discharge (C) rates, and/or enhanced or high charge capacities in or for secondary lithium batteries, and/or related methods of manufacture, use, and/or the like, and/or combinations thereof are disclosed or provided.

    NON-AQUEOUS ELECTROLYTE SOLUTION AND ELECTRICITY-STORAGE DEVICE USING SAME

    公开(公告)号:EP2770572B1

    公开(公告)日:2018-12-05

    申请号:EP12841924.9

    申请日:2012-10-16

    摘要: A nonaqueous electrolytic solution that is capable of improving the electrochemical characteristics in a broad temperature range, and an energy storage device using the same are provided, and the nonaqueous electrolytic solution contains a nonaqueous solvent having dissolved therein an electrolyte salt, in which the nonaqueous solvent contains two or more kinds of cyclic carbonates selected from ethylene carbonate, propylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 4-fluoro-1,3-dioxolan-2-one, trans-or cis-4,5-difluoro-1,3-dioxolan-2-one, vinylene carbonate, vinyl ethylene carbonate and 4-ethynyl-1,3-dioxolan-2-one, and the nonaqueous electrolytic solution further contains a cyclic acid anhydride represented by the following general formula (I) having bonded thereto a side chain that has 3 or more carbon atoms and has a double bond or a triple bond at an end thereof in an amount of from 0.01 to 10% by mass: wherein R 1 and R 2 each independently represent a hydrogen atom, a halogen atom or an alkyl group having from 1 to 6 carbon atoms, at least one hydrogen atom of which may be substituted by a halogen atom; and R 3 represents a linear or branched alkenyl group having from 2 to 4 carbon atoms and having a double bond at an end thereof or a linear or branched alkynyl group having from 2 to 4 carbon atoms and having a triple bond at an end thereof.

    DEVICE AND METHOD FOR TESTING PERFORMANCE OF BATTERY CELL

    公开(公告)号:EP3396396A1

    公开(公告)日:2018-10-31

    申请号:EP17843803.2

    申请日:2017-06-29

    申请人: LG Chem, Ltd.

    摘要: Provided are apparatus and method of testing electrochemical performance of a battery cell in a nondestructive manner. The apparatus according to an embodiment of the present disclosure includes: a memory configured to store first profile data, second profile data, a first positive electrode upper limit, a first positive electrode lower limit, a first negative electrode upper limit, and a first negative electrode lower limit that are determined in advance through a preliminary experiment with respect to each of a plurality of reference cells; a sensing unit configured to measure an open-circuit voltage of a test cell according to a variation in a state of charge (SOC) of the test cell; and a controller electrically connected to the memory and the sensing unit. The controller is configured to test performance of the test cell in a nondestructive manner based on data regarding the reference cells and data measured by the sensing unit stored in the memory.

    BATTERY CELL
    9.
    发明公开
    BATTERY CELL 审中-公开

    公开(公告)号:EP3392924A1

    公开(公告)日:2018-10-24

    申请号:EP17167210.8

    申请日:2017-04-20

    摘要: The invention refers to Battery cell (2), comprising a negative terminal (15), a positive terminal (16) and an electrode assembly (10). The electrode assembly (10) comprises an anode (11) that contains several anode tabs (25) extending from a front edge (30) of the electrode assembly (10) and a cathode (12) that contains several cathode tabs (26) extending from the front edge (30) of the electrode assembly (10). Thereby, the anode tabs (25) are connected to the negative terminal (15) and the cathode tabs (26) are connected to the positive terminal (16). The anode tabs (25) and/or the cathode tabs (26) are designed such that when in case of error the negative terminal (15) and/or the positive terminal (16) is shifted relatively to the electrode assembly (10), the anode tabs (25) and/or the cathode tabs (26) are deformed while ensuring electrical connection between the anode (11) and the negative terminal (15) and/or between the cathode (12) and the positive terminal (16).