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.

    METHOD FOR MANUFACTURING ELECTRODE ASSEMBLY

    公开(公告)号:EP2892102B1

    公开(公告)日:2018-10-31

    申请号:EP14837058.8

    申请日:2014-09-25

    申请人: LG Chem, Ltd.

    IPC分类号: H01M10/04 H01M2/16 H01M4/04

    摘要: Provided is a method of manufacturing an electrode assembly which is different from a stack folding method and a stack method. The method includes forming a unit structure, which comprises a stacked structure formed by sequentially stacking a first electrode, a first separator, a second electrode, and a second separator, or a structure formed by repeatedly forming the stacked structure a plurality of times (operation S10), forming the electrode assembly by repeatedly stacking the unit structure into a plurality of layers (operation S20), and discharging gas interposed between the layers by pressing the electrode assembly (operation S30).

    METHOD FOR PRODUCING A MULTI-LAYER POLYOLEFIN POROUS MEMBRANE AND A BATTERY SEPARATOR USING THE SAME

    公开(公告)号:EP3369549A1

    公开(公告)日:2018-09-05

    申请号:EP18168704.7

    申请日:2015-04-28

    摘要: Considering that battery separators will require further thinner materials and lower costs in the future, a production method for a multi-layer polyolefin porous membrane for laminating a modified porous layer, which has an exceptionally high peel strength to a modified porous layer, and is suitable for high-speed processing during slit process and battery assembly process, and a battery separator, on which the modified porous layer is laminated, is provided.
    The produced multi-layer polyolefin porous membrane comprises at least two layers; protrusions made of polyolefin satisfying 5 µm ≤ W ≤ 50 µm (where W is a protrusion size) and 0.5 µm ≤ H (where H is a protrusion height) and being irregularly disposed on one side of the multi-layer polyolefin porous membrane at a density of not less than 3 protrusions/cm 2 and not more than 200 protrusions/cm 2 ; the meltdown temperature being not lower than 165°C; the air permeation resistance being not greater than 300 sec/100 cc Air; and the membrane thickness being not greater than 20 µm.

    SEPARATOR AND ELECTROCHEMICAL DEVICE COMPRISING SAME

    公开(公告)号:EP3367466A1

    公开(公告)日:2018-08-29

    申请号:EP17810567.2

    申请日:2017-06-08

    申请人: LG Chem, Ltd.

    IPC分类号: H01M2/16 H01M10/0525

    摘要: Disclosed are a separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a pair of porous coating layers formed on at least one surface of the porous substrate, and including a plurality of inorganic particles and a binder disposed partially or totally on the surface of the inorganic particles to connect and fix the inorganic particles with each other, wherein the binder is used in an amount of 5-40 wt% based on the total weight of the porous coating layer, the inorganic particles include boehmite particles, the binder includes a fluorine-based binder and a rubber-based binder, and the fluorine-based binder and the rubber-based binder are used at a weight ratio of 80:20-99.9:0.1.

    POWER STORAGE ELEMENT
    10.
    发明公开

    公开(公告)号:EP3361547A1

    公开(公告)日:2018-08-15

    申请号:EP16853279.4

    申请日:2016-10-06

    发明人: TANAKA, Kie

    摘要: An object of the invention is to shorten the manufacturing time of an energy storage device by causing electrolyte to efficiently penetrate into a positive composite layer in a process of injecting the electrolyte. An energy storage device in which a negative electrode having a negative composite layer on a negative electrode collector foil and a negative composite layer non-forming part along a side of a negative electrode collector foil, and a positive electrode having a positive composite layer on a positive electrode collector foil and a positive composite layer non-forming part along a side of the positive electrode collector foil are laminated with a separator interposed therebetween, the separator having an insulating layer on its surface opposing the positive electrode, the negative composite layer non-forming part and the positive composite layer non-forming part are disposed in opposite directions to each other, a part of the negative composite layer non-forming part is connected to a negative electrode current collector, and a part of the positive composite layer non-forming part is connected to a positive electrode current collector. An end S1 on a side of the negative electrode current collector of the separator is projected more than an end P1 on the side of the negative electrode current collector of the positive composite layer, an end S2 on a side of the positive electrode current collector of the separator is projected more than an end P2 on the side of the positive electrode current collector of the positive composite layer, and a distance W2 from the end P2 of the positive composite layer to the end S2 of the separator is smaller than a distance W1 from the end P1 of the positive composite layer to the end S1 of the separator. This makes it possible to shorten the manufacturing time of the energy storage device.