Rotatable junction box for a solar module

• US 8,558,102 B2
• Filed: 09/11/2009
• Issued: 10/15/2013
• Est. Priority Date: 09/11/2009
• Status: Active Grant

• Current Assignee: Beijing Apollo Ding Rong Solar Technology Co., Ltd
• Original Assignee: MiaSole Incorporated (Wei Jun Li)
• Inventors: Croft, Steven, Everson, Shawn
• Primary Examiner(s): Kerns, Kevin P
• Assistant Examiner(s): Yoon, Kevin E
• Application Number:
  US12/558,336
• Publication Number:
  US 20110061705A1
• Time in Patent Office: 1,495 Days
• Field of Search: 164243-265, 439/49, 439/189
• US Class Current: 136/244
• CPC Class Codes: H02S 40/32 comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
• CPC Class Codes: H02S 40/34 comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

Provided are novel junction boxes for solar modules. The junction boxes or J-boxes can be rotated or otherwise moved to change the module'"'"'s electrical connection state. According to various embodiments, the J-boxes are movable between two or more orientations each associated with an electrical connection configuration. In particular embodiments, the configurations include two or more of an on position, an off position, an on series configuration, an on series-parallel configuration, and a bypass configuration. A J-box according to certain embodiments includes a replaceable insert. The insert may include one or more bypass diodes, an inverter or a DC/DC converter.

Claims

1. A junction box for a solar module comprising:

a junction box connectable to a solar module assembly, said solar module assembly comprising a plurality of interconnected solar cells, wherein the junction box is movable between at least two operating positions, wherein each position is associated with a different solar cell electrical connection configuration, wherein the junction box is rotatable between the at least two operating positions.

2. The junction box of claim 1 wherein the junction box comprises a housing and an insert movable between the at least two operating positions.

3. The junction box of claim 2 wherein the housing comprises external connection points.

4. The junction box of claim 2 wherein the insert is removable.

5. The junction box of claim 2 wherein the insert is replaceable.

6. The junction box of claim 1 wherein at least one solar cell electrical connection configuration is selected from:

a series configuration, a series-parallel configuration, an off position, and a bypass configuration.

7. The junction box of claim 2 wherein the insert comprises at least some of connectors, diodes and conductors configured such that moving the insert between the at least two operating positions changes the solar cell electrical connection configuration.

8. The junction box of claim 2 wherein the insert comprises an inverter.

9. The junction box of claim 2 wherein the insert comprises a DC/DC converter.

10. The junction box of claim 1 further comprising a tool interface feature configured to interface with a tool whereby the junction box can be moved between alternative operating positions.

11. The junction box of claim 1 wherein the junction box is mountable on a solar module assembly.

12. A solar module assembly comprising:

a plurality of interconnected solar modules, each module comprising at least one solar cell string and at least one external connection mechanism for interconnecting the modules, wherein the at least one external connection mechanism is movable between operating positions to change an electrical connection configuration of interconnected modules or connected cell strings within a module, wherein the at least one external connection mechanism is a junction box, rotatable to change the electrical connection configuration of interconnected modules or connected cell strings within a module, having connectors attached thereto.

13. The solar module assembly of claim 12 wherein the junction box comprises a housing and a movable insert.

14. The solar module assembly of claim 13 wherein the insert comprises at least some of connectors, diodes and conductors configured such that moving the insert changes the electrical connection configuration.

15. The solar module assembly of claim 12 wherein at least one electrical connection configuration is selected from:

a series configuration, a series-parallel configuration, an off position, and a bypass configuration.

16. The solar module assembly of claim 12 wherein an integrated inverter is associated with each solar module.

17. The solar module assembly of claim 16 wherein the integrated inverter is housed in a removable insert.

18. The solar module assembly of claim 12 wherein a DC/DC converter is associated with each solar module.

19. The solar module assembly of claim 18 wherein the DC/DC converter is housed in a removable insert.

20. A method of installing or servicing a solar module system including at least one solar module having a plurality of interconnected solar cells, the method comprising

rotating a junction box mounted on a solar module between a first operating position and a second operating position to thereby change the solar cell electrical connection configuration.