Current blocking element assembly and product having current blocking element assembly

Patent metadata

Field	Value
Publication number	US-11996834-B2
Application number	US-202217713874-A
Country	US
Kind code	B2
Filing date	Apr 5, 2022
Priority date	Dec 13, 2016
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

A current blocking element assembly is provided and includes first and second current blocking elements, first current blocking element including: first-A electrode layer configured to hold ions; first ion conductive layer configured to conduct ions and does not have electronic conductivity; and second-A electrode layer configured to hold ions, first-A electrode layer, first ion conductive layer, and second-A electrode layer laminated in order, second current blocking element including: first-B electrode layer configured to hold ions; second ion conductive layer configured to conduct ions and does not have electronic conductivity; and second-B electrode layer configured to hold ions, first-B electrode layer, second ion conductive layer, and second-B electrode layer laminated in order, wherein the second-A electrode layer and the second-B electrode layer are electrically connected.

First claim

The invention claimed is:

1. A current blocking element assembly comprising a first current blocking element and a second current blocking element,
the first current blocking element comprising:
a first-A electrode layer configured to hold ions;
a first ion conductive layer that is configured to conduct ions and does not have electronic conductivity; and

a second-A electrode layer configured to hold ions,
the first-A electrode layer, the first ion conductive layer, and the second-A electrode layer being laminated in this order,
the second current blocking element comprising:
a first-B electrode layer configured to hold ions;
a second ion conductive layer that is configured to conduct ions and does not have electronic conductivity; and
a second-B electrode layer configured to hold ions,
the first-B electrode layer, the second ion conductive layer, and the second-B electrode layer being laminated in this order,
wherein the second-A electrode layer and the second-B electrode layer are electrically connected;
wherein ions held in one of the electrode layers of the first current blocking element are moved to the other one of the electrode layers of the first current blocking element when current is configured to flow between the first-A electrode layer and the first-B electrode layer; and
wherein current flow between the first-A electrode layer and the second-A electrode layer is blocked when ions held in one of the first-A and second-A electrode layers of the first current blocking element are depleted or saturated.

2. The current blocking element assembly according to claim 1 , wherein
the first-A electrode layer is connected to a first terminal of a current copy-side circuit of a current mirror circuit or a current proportional circuit, and
the first-B electrode layer is connected to a second terminal of the current copy-side circuit of the current mirror circuit or the current proportional circuit.

3. The current blocking element assembly according to claim 1 , wherein
the ions include lithium ions;
the first-A electrode layer and the first-B electrode layer include at least a substance selected from the group consisting of metal lithium, a carbon compound, a tin compound, lithium titanate, and combinations thereof;
the second-A electrode layer and the second-B electrode layer include at least a substance selected from the group consisting of lithium cobaltate, lithium manganate, lithium iron phosphate, and combinations thereof; and
the first and second ion conductive layers include a solid electrolyte layer having lithium ion conductivity.

4. The current blocking element assembly according to claim 1 , wherein
the ions include fluoride ions;
the first-A electrode layer and the first-B electrode layer include a fluoride;
the second-A electrode layer and the second-B electrode layer include a fluoride; and
the first and second ion conductive layers include a solid electrolyte layer having fluoride ion conductivity.

5. A product having a current blocking element assembly according to claim 1 .

6. The product having the current blocking element assembly mounted thereon according to claim 5 ,
wherein a current mirror circuit or a current proportional circuit is further provided;
a current reference-side circuit of the current mirror circuit or the current proportional circuit is incorporated in the product;
the first-A electrode layer is connected to a first terminal of a current copy-side circuit of the current mirror circuit or the current proportional circuit, and
the first-B electrode layer is connected to a second terminal of the current copy-side circuit of the current mirror circuit or the current proportional circuit.

7. A current controlling method in a product having a current blocking element assembly according claim 1 .

Assignees

• Murata Manufacturing Co

Inventors

• Shimura Jusuke
• Kishimoto Kenji
• Morooka Masahiro
• Shimizu Keisuke

Classifications

• H03K17/51 Primary

  characterised by the components used (H03K17/04 - H03K17/30, H03K17/94 take precedence) · CPC title

• G01R22/02

  by electrolytic methods · CPC title

• G05F3/26 Primary

  Current mirrors · CPC title

• H02H3/08

  responsive to excess current (responsive to abnormal temperature caused by excess current H02H5/04) · CPC title

• H03K17/84

  the devices being thin-film devices · CPC title