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Secondary battery, battery pack, vehicle, and stationary power supply

專利號(hào)
US10868331B2
公開日期
2020-12-15
申請(qǐng)人
KABUSHIKI KAISHA TOSHIBA（JP Minato-ku）
發(fā)明人
Yasuyuki Hotta; Shinsuke Matsuno; Norio Takami
IPC分類
H01M4/02; H01M10/0565; B60L58/10; H01M2/16; H01M10/0525; H01M10/0585; H01M10/42
技術(shù)領(lǐng)域
electrode,separator,battery,negative,solid,positive,in,layer,material,secondary
地域： Minato-ku

摘要

According to one embodiment, a secondary battery is provided. The separator includes a porous self-supporting film, a solid electrolyte layer, and a first binder. The solid electrolyte layer is provided on one main surface of the porous self-supporting film. The porous self-supported film and the solid electrolyte layer are adhered with the first binder. The first binder exists on both of the one main surface and another main surface of the porous self-supporting film. The solid electrolyte layer includes solid electrolyte particles and a second binder. The solid electrolyte particles have alkali metal ions conductivity. The polymeric material of the second bonder is a same as the polymeric material of the first material.

說明書

The secondary battery 100 shown in FIGS. 5 and 6 includes an electrode group 1 shown in FIGS. 5 and 6, a container member 2 shown in FIG. 5, and an electrolyte, which is not shown. The electrode group 1 and the electrolyte are housed in the container member 2. The electrolyte is held in the electrode group 1.

The container member 2 is made of a laminate film including two resin layers and a metal layer sandwiched between the resin layers.

As shown in FIG. 6, the electrode group 1 is a stacked electrode group. The stacked electrode group 1 has a structure in which positive electrodes 3 and negative electrodes 5 are alternately stacked with separator(s) 4 sandwiched therebetween.

The electrode group 1 includes a plurality of the negative electrodes 3. Each of the negative electrodes 3 includes the negative electrode current collector 3a and the negative electrode active material-containing layers 3b supported on both surfaces of the negative electrode current collector 3a. The electrode group 1 further includes a plurality of the positive electrodes 5. Each of the positive electrodes 5 includes the positive electrode current collector 5a and the positive electrode active material-containing layers 5b supported on both surfaces of the positive electrode current collector 5a.

權(quán)利要求

1
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