Battery, a Battery Element and a Method for Forming a Battery

Patent metadata

Field	Value
Publication number	US-2017279150-A1
Application number	US-201715615964-A
Country	US
Kind code	A1
Filing date	Jun 7, 2017
Priority date	Mar 28, 2014
Publication date	Sep 28, 2017
Grant date	—

Abstract

A battery, a battery element and a method for forming a battery element are provided. In an embodiment, a battery element includes a substrate with a plurality of trenches extending into the substrate, wherein a part of a trench of the plurality of trenches is filled with a solid state battery structure, and wherein the trench of the plurality of trenches comprises a cavity.

First claim

What is claimed is:

1 . A battery element comprising:
a substrate with a plurality of trenches extending into the substrate, wherein a part of a trench of the plurality of trenches is filled with a solid state battery structure, and wherein the trench of the plurality of trenches comprises a cavity.

2 . The battery element of claim 1 , wherein a part of each trench of the plurality of trenches is filled with a solid state battery structure and each trench of the plurality of trenches comprises a cavity.

3 . The battery element of claim 1 , further comprising:
a first battery element electrode electrically connected to a first electrode of the solid state battery structure within the trench; and a second battery element electrode electrically connected to a second electrode of the solid state battery structure within the trench.

4 . The battery element of claim 1 , wherein the substrate is at least more than half of a wafer.

5 . A mobile device comprising:
a casing accommodating an electronic device configured to provide at least one of audio data and video data for a user; and a battery configured to provide a power supply for the electronic device, wherein the battery comprises a battery element comprising a substrate with a plurality of trenches extending into the substrate, wherein a part of a trench of the plurality of trenches is filled with a solid state battery structure, and wherein a maximal dimension of the substrate is larger than a maximal dimension of the casing of the mobile device.

6 . A method for forming a battery, the method comprising:
providing a wafer comprising at least two wafer electrodes, wherein the wafer comprises a plurality of trenches extending from a surface of the wafer into the wafer, wherein at least a part of a trench of the plurality of trenches is filled with a solid state battery structure, wherein the solid state battery structures within the trenches comprise electrodes electrically connected to the wafer electrodes; and forming a battery package comprising two externally accessible battery electrodes to provide a supply voltage to a connectable device.

7 . The method of claim 6 , further comprising separating the wafer to obtain a remaining part of the wafer with a desired geometry, wherein the remaining part of the wafer is at least more than half of the wafer and comprises the two wafer electrodes.

8 . A method for forming a battery, the method comprising:
providing a wafer; removing a portion of the wafer to form a substrate, the substrate comprising at least half of the wafer; forming at least two wafer electrodes in the substrate, wherein the substrate with the wafer electrodes comprises a plurality of trenches extending into the substrate, wherein at least a part of a trench of the plurality of trenches is filled with a solid state battery structure; and forming at least two externally accessible battery electrodes to provide a supply voltage of the battery, wherein the solid state battery structure within the trench comprises electrodes electrically connected to the wafer electrodes.

Assignees

• Infineon Technologies Ag

Inventors

• Lemke Marko
• Brockhaus Peter
• Lohse Jirko

Classifications

• H01M50/533

  characterised by the shape of the leads or tabs · CPC title

• Y02P70/50

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

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title