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Stacked all-solid-state battery

An all-solid-state battery, stacked type technology, applied in the direction of batteries, lithium batteries, secondary batteries, etc., to achieve the effect of suppressing Joule heat and suppressing output reduction

Active Publication Date: 2017-06-09
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Those skilled in the art cannot solve this problem even if they refer to Patent Documents 1 to 3

Method used

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  • Stacked all-solid-state battery
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  • Stacked all-solid-state battery

Examples

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Embodiment Construction

[0030] 1. Laminated all-solid-state battery

[0031] exist figure 1 , schematically shows the layer structure of a stacked all-solid-state battery 100 according to one embodiment. exist figure 1 In , the battery case and the like are omitted for convenience of description.

[0032] Such as figure 1 As shown, the laminated all-solid-state battery 100 includes a stacked body 20 in which a plurality of power generating elements 10 are stacked, and a preceding short-circuit layer 30 is provided on the outside of the stacked body 20, wherein a positive electrode current collector layer is stacked on the power generating element 10 11. Positive electrode material layer 12, solid electrolyte layer 13, negative electrode material layer 14 and negative electrode current collector layer 15, at least one of positive electrode current collector layer 11 and negative electrode current collector layer 15 (in figure 1 In the shown form, only the positive electrode current collector layer...

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Abstract

The invention provides a stacked all-solid-state battery, which can inhibit the output degradation of battery. Moreover, the Joule heat can be inhibited even if the short circuit, which is caused by external stress such as barbed nail, of the stacked all-solid-state battery happens. The stacked all-solid-state battery includes: a stacked body including stacked power generation elements each having a cathode current collector layer, a cathode material layer, a solid electrolyte layer, an anode material layer, and an anode current collector layer; and an antecedent short circuit layer arranged outside the stacked body. In the battery, at least one of the cathode current collector layer and the anode current collector layer includes a fuse portion that fuses by over current, the antecedent short circuit layer includes a first metal layer, a second metal layer and an aluminum layer provided between the first and second metal layers and including an oxide film on its surface; the elements have a parallel connection to each other, and the first and second metal layers are respectively and electrically connected with the cathode and anode current collector layers.

Description

technical field [0001] The invention relates to a laminated all-solid battery. Background technique [0002] As disclosed in Patent Document 1, in a laminated all-solid-state battery, a technique is known in which a fuse portion that is blown due to an overcurrent is provided in a positive electrode current collector or a negative electrode current collector. Accordingly, it is considered that the safety at the time of occurrence of a short circuit can be further improved. [0003] In addition, as disclosed in Patent Document 2, there is known a technique of providing a short-circuit electrode independently of a positive electrode and a negative electrode in a laminated all-solid-state battery. Accordingly, it is considered that when the battery case is crushed or pierced by a nail, a short circuit can be rapidly generated in the short-circuit electrode and the battery voltage can be lowered. [0004] Furthermore, as disclosed in Patent Document 3, it is known that in a st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0585H01M2/34H01M10/42H01M50/54H01M50/583
CPCH01M10/0585H01M10/4235H01M50/54H01M50/583H01M10/052H01M10/0562H01M2220/20H01M2200/103Y02E60/10Y02P70/50H01M50/581
Inventor 杉浦功一
Owner TOYOTA JIDOSHA KK