Secondary battery

Patent metadata

Field	Value
Publication number	US-9972862-B2
Application number	US-201314395316-A
Country	US
Kind code	B2
Filing date	Apr 25, 2013
Priority date	Apr 27, 2012
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

Provided is a secondary battery in which a single-layer secondary cell has an all-solid-state secondary cell structure with a storage layer sandwiched between a positive electrode layer and a negative electrode layer and which is superior to a conventional secondary battery with respect to at least one of volume, operation, and positioning. The present invention provides a secondary battery including a folded single-layer secondary cell formed by folding a sheet-shaped single-layer secondary cell, with a storage layer sandwiched between a positive electrode layer and a negative electrode layer, two or more times while alternately reversing the folding direction.

First claim

The invention claimed is:

1. A secondary battery, comprising a plurality of single-layer secondary cells each formed by folding a sheet-shaped single-layer secondary cell, with a storage layer sandwiched between a positive electrode layer and a negative electrode layer, the storage layer being arranged to store electrons during a charging operation and to release the stored electrons during a discharging operation,
wherein the secondary battery is arranged by superposing the plurality of single-layer secondary cells and folding the superposed plurality of single-layer secondary cells two or more times while alternately reversing the folding direction in a multistage manner to form a folded multistage single layer secondary cell with a top and a bottom of each cell oriented in a same direction,
wherein a positive electrode terminal member is inserted into a space between mutually-facing sections of a respective positive electrode layer of one of the single-layer secondary cells, and a leading end of the positive electrode terminal member extends to a bent section of the respective positive electrode layer,
wherein a negative electrode terminal member is inserted into a space between mutually-facing sections of a respective negative electrode layer of at least one of the single-layer secondary cells, and a leading end of the negative electrode terminal member extends to a bent section of the respective negative electrode layer, and
wherein each storage layer is an n-type metal oxide semiconductor and each positive electrode layer comprises a p-type metal oxide semiconductor layer formed to be in contact with a respective electrode main body layer and a respective storage layer.

2. The secondary battery according to claim 1 ,
wherein each single-layer secondary cell includes a non-folded portion which is not folded, and
at least one of the positive electrode layer and the negative electrode layer at the non-folded portion is in contact with a positive electrode terminal member or a negative electrode terminal member.

3. The secondary battery according to claim 1 ,
wherein, in the single-layer secondary cell, the negative electrode layer or the positive electrode layer is formed on a conductive base plate.

4. A secondary battery, comprising a plurality of single-layer secondary cells each formed by folding a sheet-shaped single-layer secondary cell, with a storage layer sandwiched between a positive electrode layer and a negative electrode layer, the storage layer being arranged to store electrons during a charging operation and to release the stored electrons during a discharging operation,
wherein a folded multistage single-layer secondary cell is arranged by superposing the plurality of single-layer secondary cells and folding the superposed plurality of single-layer secondary cells two or more times while alternately reversing the folding direction in a multistage manner with a top and a bottom of at least one of the superposed single layer secondary cells oriented in a first direction and a top and a bottom of at least one other of the superposed single-layer secondary cells oriented in a second direction which is opposite to the first direction,
wherein one of a positive electrode terminal member and a negative electrode member is inserted into a space between mutually-facing sections of the respective positive or negative electrode layers of two of the single-layer secondary cells, and a leading end of the positive electrode terminal member or the negative electrode member extends to bent sections of the respective positive or negative electrode layers,
wherein the other of the positive electrode terminal member and the negative electrode terminal member is inserted into a space between mutually-facing sections of a respective positive electrode layer or negative electrode layer of one of the two single-layer secondary cells, and a leading end of the positive electrode terminal member or negative electrode terminal member extends to a bent section of the respective positive electrode layer or negative electrode layer of the one of the two single-layer secondary cells, and
wherein each storage layer is an n-type metal oxide semiconductor and each positive electrode layer comprises a p-type metal oxide semiconductor layer formed to be in contact with a respective electrode main body layer and a respective storage layer.

5. The secondary battery according to claim 4 ,
wherein the folded multistage single-layer secondary cell includes a non-folded portion which is not folded, and
at least one of the positive electrode layer and the negative electrode layer at the non-folded portion is in contact with a positive electrode terminal member or a negative electrode terminal member.

6. The secondary battery according to claim 4 ,
wherein, in the single-layer secondary cell, the negative electrode layer or the positive electrode layer is formed on a conductive base plate.

Assignees

• Nihon Micronics Kk
• Guala Tech Co Ltd

Inventors

• KUDOH Takuo
• Hiwada Kiyoyasu
• Izumo Shozo
• Saito Tomokazu
• Nakazawa Akira

Classifications

• H01M10/0459

  Cells or batteries with folded separator between plate-like electrodes · CPC title

• H01M10/045 Primary

  Cells or batteries with folded plate-like electrodes · CPC title

• H01M10/0583

  of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators · CPC title

• H01M10/0454

  Cells or batteries with electrodes of only one polarity folded · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title