Air cell and assembled battery using the same

Patent metadata

Field	Value
Publication number	US-9350058-B2
Application number	US-201214344756-A
Country	US
Kind code	B2
Filing date	Sep 13, 2012
Priority date	Sep 15, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

An air cell includes a positive electrode layer, an electrolyte layer stacked on the positive electrode layer, a negative electrode layer stacked on the electrolyte layer and an electroconductive liquid-tight ventilation layer stacked on the positive electrode layer, the electroconductive liquid-tight ventilation layer being positioned on the opposite side of the positive electrode from the electrolyte layer. The assembled battery is provided with a plurality of the air cells described above. The assembled battery is provided with a flow path through which oxygen-containing gas flows interposed between the electrically-conductive liquid-tight ventilation layer of a first air cell and the negative electrode layer of a second air cell adjacent to the first air cell. The first air cell is electrically connected to the negative electrode layer of the second air cell via the electrically-conductive liquid-tight ventilation layer.

First claim

The invention claimed is:

1. An assembled battery comprising a plurality of air cells, the air cells each including:
a positive electrode layer;
an electrolyte layer stacked on the positive electrode layer;
a negative electrode layer stacked on the electrolyte layer; and
an electrically-conductive liquid-tight ventilation layer stacked on the positive electrode layer on an opposite side of the electrolyte layer,
wherein a flow path through which oxygen-containing gas flows is interposed between the electrically-conductive liquid-tight ventilation layer of a first air cell and the negative electrode layer of a second air cell adjacent to the first air cell, and
the first air cell is electrically connected to the negative electrode layer of the second air cell via the electrically-conductive liquid-tight ventilation layer and an electrically-conductive porous body located in the flow path and directly connected electrically to the electrically-conductive liquid-tight ventilation layer, the electrically-conductive porous body including a first side facing the electrically-conductive liquid-tight ventilation layer and an opposite second side, wherein substantially the entire first side is in direct electrical contact with the electrically-conductive liquid-tight ventilation layer.

2. The assembled battery according to claim 1 , wherein
a thickness direction of the layers in the air cells is parallel to a conduction path direction in the assembled battery.

3. The assembled battery according to claim 2 , wherein the electrically-conductive porous body is at least one material selected from the group consisting of a particle assembly, a fiber assembly, a fiber structure and a porous plate.

4. The assembled battery according to claim 2 , wherein the electrically-conductive porous body contains at least one of carbon and metal.

5. The assembled battery according to claim 1 , wherein the electrically-conductive liquid-tight ventilation layer is an electrically-conductive water-repellent layer having electric conductivity and water-tight air permeability.

6. The assembled battery according to claim 5 , wherein the electrically-conductive water-repellent layer contains at least one material selected from the group consisting of a microporous film, a fiber assembly and a fiber structure.

7. The assembled battery according to claim 5 , wherein the electrically-conductive water-repellent layer contains at least one of an electrically-conductive material having water repellency and a material containing a water-repellent material and an electrically-conductive material.

8. The assembled battery according to claim 7 , wherein the electrically-conductive material is at least one of a fibrous electrically-conductive material and a particulate electrically-conductive material.

9. The assembled battery according to claim 7 , wherein the electrically-conductive material contains at least one of carbon and metal.

10. The assembled battery according to claim 7 , wherein the water-repellent material contains at least one of olefin resin and fluorine resin.

11. The assembled battery according to claim 7 , wherein at least one of the electrically-conductive material having water repellency and the water-repellent material contains a material obtained in a manner such that a non-water-repellent material is subjected to water-repellent treatment.

12. The assembled battery according to claim 11 , wherein the water-repellent treatment is fluorine treatment.

Assignees

• Nagayama Mori
• Chiba Nobutaka
• Tsukada Yoshiko
• Miyazawa Atsushi
• Nissan Motor

Inventors

• Nagayama Mori
• Chiba Nobutaka
• Tsukada Yoshiko
• Miyazawa Atsushi

Classifications

• H01M12/065 Primary

  with plate-like electrodes or stacks of plate-like electrodes · CPC title

• H01M4/628

  Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title

• H01M4/624

  Electric conductive fillers · CPC title

• H01M4/06

  Electrodes for primary cells · CPC title

• H01M50/514

  Methods for interconnecting adjacent batteries or cells · CPC title