Systems and methods for laser processing of solid-state batteries

Patent metadata

Field	Value
Publication number	US-11865636-B2
Application number	US-202016783910-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Feb 6, 2020
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

The present disclosure relates to a system for laser processing of a ceramic electrolyte material. The system may include a controller, a laser responsive to the controller for generating a beam, and a beam forming subsystem. The beam forming subsystem controls a parameter of the beam generated by the laser. The beam forming subsystem further controls the beam to provide a laser fluence sufficient to produce densification of the ceramic electrolyte material.

First claim

What is claimed is:

1. A system for laser sintering of a ceramic electrolyte material forming a green body, the system comprising:
a controller;
a laser responsive to the controller for generating a beam;
a beam forming subsystem for controlling a parameter of the beam generated by the laser; and
wherein the beam forming subsystem is further controlled such that the beam provides a laser fluence selected to act on a full thickness of the ceramic electrolyte material forming the green body, to simultaneously both sinter and densify the full thickness of the ceramic electrolyte material forming the green body in a single laser processing operation, wherein the full thickness of the ceramic electrolyte material forming the green body is densified such that the full thickness of the ceramic electrolyte material forming the green body reduces from a thickness of greater than 260 μm down to a thickness of 260 μm, and wherein the ceramic electrolyte material forming the green body includes a garnet Li7LasZr2O12 (LLZO) material in one of powder, pellet or tape form.

2. The system of claim 1 , wherein the laser comprises a continuous wave laser.

3. The system of claim 1 , wherein the laser comprises a pulsed laser.

4. The system of claim 1 , wherein the parameter of the beam includes at least one of:
beam spot size;
power level;
beam pulse duration;
beam pulse repetition rate; or
laser fluence generated.

5. The system of claim 1 , wherein the beam forming subsystem and the laser are further configured to perform an ablation operation to ablate a portion of material on a surface of the ceramic electrolyte material.

6. The system of claim 1 , wherein the beam forming subsystem and the laser are further configured to perform patterning of a surface of the ceramic electrolyte material.

7. The system of claim 1 , wherein the beam forming subsystem and the laser are further configured to perform laser trimming of at least a portion of the ceramic electrolyte material.

8. The system of claim 3 , wherein the pulsed laser is configured to perform an ablation operation to remove a portion of surface material from the ceramic electrolyte material.

9. The system of claim 1 , wherein at least one of the beam forming subsystem or the laser is configured to control at least one of the following parameters:
beam spot size;
power level;
beam pulse duration;
beam pulse repetition rate;
laser fluence generated; or
beam spatial distribution.

10. A system for laser sintering of a ceramic electrolyte material forming a green body, the system comprising:
a controller;
a laser responsive to the controller for generating a beam;
a beam forming subsystem for controlling a parameter of the beam generated by the laser; and
wherein the beam forming subsystem is further controlled such that the beam provides a laser fluence selected to act on a full thickness of the ceramic electrolyte material forming the green body, to simultaneously both sinter and densify the full thickness of the ceramic electrolyte material forming the green body in a single laser processing operation, wherein the full thickness of the ceramic electrolyte material forming the green body is densified such that the full thickness of the ceramic electrolyte material forming the green body reduces by up to 28% while performing the single laser processing operation for about 20 seconds, and wherein the ceramic electrolyte material forming the green body includes a garnet Li7LasZr2O12 (LLZO) material in one of powder, pellet or tape form.

Assignees

• L Livermore Nat Security Llc

Inventors

• Ye Jianchao
• Roehling John
• Yoo Jae Hyuck

Classifications

• B23K26/0622 Primary

  by shaping pulses · CPC title

• H01M8/124

  characterised by the process of manufacturing or by the material of the electrolyte · CPC title

• B23K2103/52

  Ceramics · CPC title

• H01S3/1024

  for pulse generation · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title