Lithium ion secondary battery containing a non-polar active material

Patent metadata

Field	Value
Publication number	US-9793573-B2
Application number	US-201214127065-A
Country	US
Kind code	B2
Filing date	May 31, 2012
Priority date	Jun 20, 2011
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A lithium ion secondary battery that can be charged without regard to polarity is disclosed. The lithium ion secondary battery includes a lithium ion secondary battery unit, which includes a first electrode layer and a second electrode layer that are laminated on an electrolytic region. The first electrode layer and the second electrode layer contain Li 2 Mn 2 O 4 as a common active material.

First claim

The invention claimed is:

1. A lithium ion secondary battery comprising:
a laminated body that comprises a first electrode layer, a second electrode layer, and an electrolyte layer,
wherein
the first electrode layer is disposed directly on one side of the electrolyte layer and the second electrode layer is disposed directly on the other side of the electrolyte layer,
each of the first electrode layer and the second electrode layer consists of a non-polar active material, and
the non-polar active material is Li 2 Mn 2 O 4 .

2. An electronic apparatus including the lithium ion secondary battery according to claim 1 as a power source.

3. An electronic apparatus including the lithium ion secondary battery according to claim 1 as a storage element.

4. A lithium ion secondary battery comprising:
a plurality of lithium ion secondary battery unit cells,
a current collector layer that is disposed on one of the plurality of lithium ion secondary unit cells,
a conductive film that is disposed on (1) the one of the plurality of lithium ion secondary unit cells, (2) another one of the plurality of lithium ion secondary unit cells, or (3) the current collector layer, and
a lead wire that is electrically connected to at least one of the current collector layer and the conductive film,
wherein
each of the lithium ion secondary battery unit cells is connected to one another,
each of the lithium ion secondary battery unit cells comprises a laminated body,
the laminated body comprises a first electrode layer, a second electrode layer, and an electrolyte layer,
the first electrode layer is disposed directly on one side of the electrolyte layer and the second electrode layer is disposed directly on the other side of the electrolyte layer,
each of the first electrode layer and the second electrode layer consists of a non-polar active material, and
the non-polar active material is Li 2 Mn 2 O 4 .

5. The lithium ion secondary battery according to claim 4 , wherein the plurality of lithium ion secondary battery unit cells are connected to each other in series.

6. The lithium ion secondary battery according to claim 4 , wherein the plurality of lithium ion secondary battery unit cells are connected to each other in parallel.

7. An electronic apparatus including the lithium ion secondary battery according to claim 4 as a power source.

8. An electronic apparatus including the lithium ion secondary battery according to claim 4 as a storage element.

9. A method for modifying battery characteristics, comprising changing an output voltage or battery capacity of the lithium ion secondary battery according to claim 4 by changing a connection of the lead wire that is electrically connected to at least one of the current collector layer and the conductive film.

Assignees

• Baba Mamoru
• Fujita Takayuki
• Namics Corp

Inventors

• Baba Mamoru
• Fujita Takayuki

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M4/505 Primary

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/269

  Mechanical means for varying the arrangement of batteries or cells for different uses, e.g. for changing the number of batteries or for switching between series and parallel wiring (methods or arrangements for servicing or maintenance H01M6/50, H01M10/42) · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title