Flexible battery and electronic device

Patent metadata

Field	Value
Publication number	US-11670807-B2
Application number	US-202017116678-A
Country	US
Kind code	B2
Filing date	Dec 9, 2020
Priority date	Nov 27, 2014
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

To provide a lithium-ion storage battery or electronic device that is flexible and highly safe. One embodiment of the present invention is a flexible storage battery including a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, an exterior body that surrounds the positive electrode, the negative electrode, and the separator, and a wiring provided along the exterior body. At least part of the wiring is more easily breakable by deformation than the exterior body. The wiring is more vulnerable to deformation than the exterior body and thus damaged earlier than the exterior body. Damage to the wiring is detected and an alert is sent to a user; thus, the use of the storage battery can be stopped before the exterior body is damaged.

First claim

What is claimed is:

1. A storage battery comprising:
an exterior body;
a wiring provided along the exterior body; and
a circuit electrically connected to the wiring,
wherein each of the exterior body and the wiring comprises a region that is changed in form in response to an external force, and
wherein the circuit is configured to detect damage to the wiring according to the number of times the wiring is changed in form.

2. The storage battery according to claim 1 , further comprising:
a control unit,
wherein the control unit is configured to automatically stops discharge or charge when the circuit detects damage to the wiring.

3. A storage battery, included in a deformable electronic device, comprising:
an exterior body;
a wiring provided along the exterior body; and
a circuit electrically connected to the wiring,
wherein each of the exterior body and the wiring comprises a region that is changed in form in response to deformation of the deformable electronic device, and
wherein the circuit is configured to detect damage to the wiring according to the number of times the wiring is changed in form.

Assignees

• Semiconductor Energy Lab

Inventors

• Yamakaji Masaki
• Momo Junpei
• Tajima Ryota
• Kasahara Takahiro

Classifications

• Y02P70/50

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

• H01M50/121

  Organic material · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/425 Primary

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title