Secondary battery, and electrode sheet cutting apparatus
    7.
    发明授权
    Secondary battery, and electrode sheet cutting apparatus 有权
    二次电池和电极片切割装置

    公开(公告)号:US09548483B2

    公开(公告)日:2017-01-17

    申请号:US13981673

    申请日:2011-01-28

    Inventor: Masakazu Umehara

    Abstract: A secondary battery 100 comprises a positive electrode current collector 221 and a positive electrode active material layer 223 applied on the positive electrode current collector 221 and containing at least a positive electrode active material. The lithium-ion secondary battery 100 further comprises a negative electrode current collector 241 provided so as to oppose the positive electrode current collector 221 and a negative electrode active material layer 243 applied on the negative electrode current collector 241 and containing at least a negative electrode active material. The lithium-ion secondary battery 100 is also formed with a porous insulating layer 245 which contains stacked resin particles having insulating properties and is formed so as to cover at least one of the positive electrode active material layer 223 and the negative electrode active material layer 243 (in this case, negative electrode active material layer 243). The lithium-ion secondary battery 100 further comprises, on the edge of the insulating layer 245, a molten part 246 where the resin particles are melted.

    Abstract translation: 二次电池100包括正极集电体221和施加在正极集电体221上并且至少含有正极活性物质的正极活性物质层223。 锂离子二次电池100还包括设置为与正极集电体221相对设置的负极集电体241和施加在负极集电体241上的负极活性物质层243,并且至少含有负极活性物质 材料。 锂离子二次电池100还形成有多孔绝缘层245,其包含具有绝缘性的层叠树脂颗粒,并且形成为覆盖正极活性物质层223和负极活性物质层243中的至少一个 (在这种情况下为负极活性物质层243)。 锂离子二次电池100在绝缘层245的边缘还包括熔融部分246,其中树脂颗粒熔化。

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