IP Library Granted Patent US 11,211,518
Granted Patent B2
US 11,211,518 · App. 15/930,182 · Granted Dec 28, 2021

Tiled solar module repair process

Inventors: Kevin R. Gibson (Redwood City, CA); Aureo Parilla (Hayward, CA); Manny Castro (San Jose, CA)
Assignee: Solaria Corporation
H01L31/188H01L31/0201H01L31/044H01L31/0504H02S40/44Y02E10/50
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Quick Facts
Patent No.
US 11,211,518
App. No.
15/930,182
Granted
Dec 28, 2021
Kind
B2
Abstract

In an example, a method includes providing a photovoltaic string comprising a plurality of from 2 to 45 strips, each of the plurality of strips being configured in a series arrangement with each other, each of the plurality of strips being coupled to another one of the plurality of strips using an electrically conductive adhesive (ECA) material, detecting at least one defective strip in the photovoltaic string, applying thermal energy to the ECA material to release the ECA material from a pair of photovoltaic strips to remove the defective photovoltaic strip, removing any residual ECA material from one or more good photovoltaic strip, aligning the photovoltaic string without the damaged photovoltaic strip, and a replacement photovoltaic strip that replaces the defective photovoltaic strip, and curing a reapplied ECA material on the replacement photovoltaic strip to provide the photovoltaic string with the replacement photovoltaic strip.

Claims (30)

1. A method of manufacturing a solar module apparatus comprising:

providing a first photovoltaic string, the first photovoltaic string comprising a first plurality of from 2 to 45 strips, each of the first plurality of strips being configured in a series arrangement with each other, each of the first plurality of photovoltaic strips having a substantially similar width and substantially similar length, the first photovoltaic string comprising a first bus bar and a second bus bar, each of the first plurality of strips being coupled to another one of the first plurality of strips using an electrically conductive adhesive (ECA) material to mechanically connect the first plurality of strips together;

detecting the presence of at least one defective photovoltaic strip in the first photovoltaic string through visual inspection while applying voltage and current to the first photovoltaic string and

repairing the solar module apparatus with a replacement photovoltaic strip by softening the ECA material.

2. The method of claim 1 , wherein detecting the presence of the at least one defective photovoltaic strip comprises:

applying DC power to the first bus bar and the second bus bar to initiate an emission of electromagnetic radiation from each of the photovoltaic strips.

3. The method of claim 2 , wherein detecting the presence of the at least one defective photovoltaic strip comprises:

capturing an image of the photovoltaic string to identify at least one of the photovoltaic strips that has a darker image and therefore the at least one defective photovoltaic strip.

4. The method of claim 3 wherein the image is captured in an electromagnetic radiation range including infra-red.

5. The method of claim 2 wherein the DC power comprises a voltage ranging from 10 to 50 Volts and a current ranging from 0.5 to 10 Amps.

6. The method of claim 1 further comprising:

prior to the repairing, selecting the replacement photovoltaic strip from a magazine.

7. The method of claim 6 further comprising:

prior to the repairing, transferring an end photovoltaic strip to the magazine.

8. The method of claim 6 further comprising:

prior to the repairing, transferring an end photovoltaic strip to a different magazine.

9. The method of claim 1 wherein:

softening the ECA material comprises applying thermal energy to the ECA; and

after the thermal energy is applied to the ECA, mechanical force is applied to a joint which is bonded by the ECA material to mechanically separate the defective photovoltaic strip from a portion of the string that includes non-defective strips.

10. The method of claim 9 wherein the portion of the string that includes non-defective strips is retained in a fixture, and the defective photovoltaic strip is exposed by an orifice of the fixture.

11. The method of claim 1 wherein the defective photovoltaic strip has a defect comprising a crack.

12. The method of claim 11 wherein the defective photovoltaic strip has a fracture plane from a singulation process.

13. The method of claim 11 wherein the defective photovoltaic strip has a kerf from a scribing process.

14. The method of claim 1 wherein the replacement photovoltaic strip has a fracture plane from a singulation process.

15. The method of claim 1 wherein the replacement photovoltaic strip has a kerf from a scribing process.

16. The method of claim 1 wherein the defective photovoltaic strip has a fracture plane from a singulation process.

17. The method of claim 1 wherein the defective photovoltaic strip has a kerf from a scribing process.

18. The method of claim 1 wherein the defective photovoltaic strip has a defect consisting of at least one of a broken section, a bad electrical interconnect, a defective photovoltaic material, or short or open circuit.

19. The method of claim 18 wherein the defective photovoltaic strip has a kerf from a scribing process.

20. The method of claim 18 wherein defective photovoltaic strip has a fracture plane from a singulation process.

Assignments (7)
SECURITY INTEREST Recorded Jun 27, 2024
From: MAXEON SOLAR PTE. LTD.
To: DB TRUSTEES (HONG KONG) LIMITED
Reel/Frame 067924/0062 →
SECOND LIEN SECURITY INTEREST AGREEMENT Recorded Jun 26, 2024
From: MAXEON SOLAR PTE. LTD
To: DB TRUSTEES (HONG KONG) LIMITED
Reel/Frame 071343/0553 →
SECURITY INTEREST Recorded Jun 5, 2024
From: MAXEON SOLAR PTE. LTD.
To: DB TRUSTEES (HONG KONG) LIMITED
Reel/Frame 067637/0598 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 8, 2024
From: SOLARCA LLC
To: MAXEON SOLAR PTE. LTD.
Reel/Frame 067040/0320 →
MERGER AND CHANGE OF NAME Recorded Oct 19, 2023
From: SOLARIA CORPORATION (AKA THE SOLARIA CORPORATION); SOLARCA LLC
To: SOLARCA LLC
Reel/Frame 065285/0042 →
PARTIAL RELEASE OF SECURITY INTEREST IN PATENTS Recorded Oct 9, 2023
From: KLINE HILL PARTNERS FUND LP
To: SOLARCA, LLC
Reel/Frame 065191/0835 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 13, 2020
From: GIBSON, KEVIN R.; PARILLA, AUREO; CASTRO, MANNY
To: SOLARIA CORPORATION
Reel/Frame 052649/0374 →
Continuity (5)
Continuation 16521233 · Jul 24, 2019
Continuation 15621991 · Jun 13, 2017
Continuation In Part 14609307 · Jan 29, 2015
Provisional Application 62349541 · Jun 13, 2016
Related Publication 20200274021A1 · Aug 27, 2020