Apparatus and method of a universal module junction box

• US 10,404,208 B2
• Filed: 06/02/2016
• Issued: 09/03/2019
• Est. Priority Date: 06/02/2015
• Status: Active Grant

• Current Assignee: JA Solar USA, Inc. (JA Solar Technology Co., Ltd.)
• Original Assignee: JA Solar USA, Inc. (JA Solar Technology Co., Ltd.)
• Inventors: Galitev, Teodor, Shan, Wei
• Primary Examiner(s): Kang, Tae-Sik
• Application Number:
  US15/171,597
• Publication Number:
  US 20160359450A1
• Time in Patent Office: 1,188 Days
• 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

Embodiments of the present disclosure are directed to a universal junction box for solar modules that comprises multiple sub-assemblies with a replaceable diode black and an open-IP plug sub-assembly. The universal junction box includes a first sub-assembly (junction box platform), a second sub-assembly (a replaceable diode block), and a third sub-assembly (an open sub-assembly or plug sub-assembly. If the electronics in the diode block becomes defective, a new replaceable diode block can be used to substitute into the defective diode black without having to replace the entire junction box. The open-IP plug sub-assembly provides the flexibility to couple a variety of cable sub-assembly or IMEs to the universal junction box as long as a particular selected cable sub-assembly fits with the dimension of the open-IP plug sub-assembly.

Claims

1. A universal solar module box mounted on a solar module, comprising:

a junction box platform having a base plate, a blade block, and a cover, the blade block having a first blade and a second blade;

a modular diode block coupled electrically and mechanically to the junction box platform via the blade block, the modular diode block having a first connector and a second connector, the first blade of the blade block extending through the base plate and protruding through the first connector of the modular diode block for establishing an electrical connection between the first blade of the blade block and the first connector of the modular diode block, the second blade of the blade block extending through the base plate and protruding through the second connector of the modular diode block for establishing an electrical connection between the second blade of the blade block and the second connector of the modular diode block; and

a plug sub-assembly having a plug block and a cable block, attachable to the junction box platform and the modular diode block, the plug sub-assembly providing a protective covering to weatherize the modular diode block, the blade block, and the cable block, the cable block attachable mechanically to the plug block, the cable block securing mechanically and electrically to one or more output cables.

2. The universal solar module box of claim 1, wherein the modular diode block comprises a plurality of diodes, the modular diode block being a replaceable component when a diode in the plurality of diodes in the modular diode block fails.

3. The universal apparatus of claim 1, wherein the modulator diode block comprises three diodes for protecting a plurality of solar cells on the solar module.

4. The universal apparatus of claim 1, wherein the modulator diode block comprises at least one diode.

5. The apparatus of claim 1, wherein the plug sub-assembly is coupled to a pair of cables.

6. The universal apparatus of claim 1, wherein the plug sub-assembly is coupled to a single cable.

7. The universal solar module box of claim 1, wherein the junction box platform having a cage that is mechanically attached to a solar module frame and the base plate for distributing the physical load to the frame from the base plate.

8. The universal solar module box of claim 1, wherein the plug sub-assembly comprises one or more micro-inverters.

9. The universal solar module box of claim 1, wherein the plug sub-assembly comprises one or more micro-inverters and electronics.

10. The universal solar module box of claim 1, wherein the solar module has a module frame, further comprising a cage metallic frame mechanically attached to the module frame and the base plate, thereby distributing the load and weight to the module frame from the base plate.

12. The universal module box of claim 1, wherein the modular diode block comprises a first connector coupled to one end of the first diode for establishing a first external connection, and a second connector coupled to one end of the third diode for establishing a first external connection.

13. The universal module box of claim 1, wherein the modular diode block comprises heat dissipating material surrounding the first diode, the second diode and the third diode.

14. The universal solar module box of claim 1, wherein the cover provides a top cover over the blade block and the base plate.

15. The universal solar module box of claim 1, wherein the base plate has an extending arm that provides a one-way direct connection to the modular diode block.

11. A universal solar module box mounted on a solar module, comprising:

a junction box platform having a base plate, a blade block, a cover, and a cage, the blade block having a first blade and a second blade;

a modular diode block coupled electrically and mechanically to the junction box platform via the blade block, the modular diode block having a first connector and a second connector, the first blade of the blade block extending through the base plate and protruding through the first connector of the modular diode block for establishing an electrical connection between the first blade of the blade block and the first connector of the modular diode block, the second blade of the blade block extending through the base plate and protruding through the second connector of the modular diode block for establishing an electrical connection between the second blade of the blade block and the second connector of the modular diode block; and

a plug sub-assembly having a plug block and a cable block, attachable to the junction box platform and the modular diode block, the plug sub-assembly providing a protective covering to weatherize the modular diode block, the blade block, and the cable block, the cable block attachable mechanically to the plug block, the cable block securing mechanically and electrically to one or more output cables.

16. The universal module box of claim 11, wherein the modular diode block comprises a first connector coupled to one end of the first diode for establishing a first external connection, and a second connector coupled to one end of the third diode for establishing a first external connection.

17. The universal module box of claim 11, wherein the modular diode block comprises heat dissipating material surrounding the first diode, the second diode and the third diode.

18. The universal solar module box of claim 11, wherein the base plate has an extending arm that provides a one-way direct connection to the modular diode block.