Integral inverter and solar cell module including the same

Patent metadata

Field	Value
Publication number	US-9735699-B2
Application number	US-201414478892-A
Country	US
Kind code	B2
Filing date	Sep 5, 2014
Priority date	Jan 15, 2014
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar cell panel, a bypass diode electrically connected to the terminal, an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the bypass diode and a case configured to integrate at least one of the terminal and the bypass diode with the DC-AC inverter located therein.

First claim

What is claimed is:

1. An integral inverter usable with a solar cell module comprising a solar cell panel, the integral inverter comprising:
a terminal connected to the solar cell panel;
a bypass diode electrically connected to the terminal;
an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the bypass diode; and
a case configured to integrate at least one of the terminal and the bypass diode with the DC-AC inverter located therein,
wherein the inverter member includes:
a current sensor configured to sense whether power in the inverter member is normal; and
a DC-DC converter configured to convert direct current power transmitted from the bypass diode, the DC-DC converter including at least three interleaving converters, and
wherein the current sensor and the bypass diode are connected to each other by a circuit pattern on a circuit board.

2. The integral inverter according to claim 1 , wherein at least one of the terminal, the bypass diode and the DC-AC inverter are formed on the circuit board or another circuit board so as to be integrated with each other, or surrounded by a potting member so as to be integrated with each other by the potting member.

3. The integral inverter according to claim 1 , wherein at least one of the terminal and the bypass diode is located on the circuit board or another circuit board.

4. The integral inverter according to claim 1 , wherein the terminal, the bypass diode and the DC-AC inverter are formed on the circuit board or another circuit board and connected to one another.

5. The integral inverter according to claim 1 , further comprising a single AC output cable configured to outwardly transmit alternating current converted by the integral inverter.

6. The integral inverter according to claim 1 , wherein the case receives the terminal, the bypass diode and the DC-AC inverter therein, and
wherein the case includes a first through-hole for connection of a solar cell panel and the terminal, and a second through-hole for connection of the DC-AC inverter and an external element.

7. The integral inverter according to claim 6 , further comprising an inner member located in the case,
wherein the circuit board or another circuit board is provided with the terminal, the bypass diode, and the DC-AC inverter, and
wherein a potting member surrounding the circuit board or the another circuit board, the bypass diode, and the DC-AC inverter are located in the inner member.

8. The integral inverter according to claim 6 , wherein the case includes a first case part and a second case part fixed to each other by a fixing member.

9. The integral inverter according to claim 8 , wherein the fixing member includes at least one of a bonding member, an elastic member, a latch member and a fastening member.

10. The integral inverter according to claim 6 , wherein the second case part includes a first portion and a second portion separated from the first portion.

11. The integral inverter according to claim 1 , wherein the case serves as a ground.

12. The integral inverter according to claim 11 , further comprising at least one of:
a first ground structure configured to ground the case and the circuit board or another circuit board;
a second ground structure configured to ground the case and a frame for fixing of the solar cell panel; and
a third ground structure configured to ground a first case part of the case and a second case part of the case coupled to the first case part.

13. The integral inverter according to claim 12 , wherein at least one of the first to third ground structures is grounded via fastening of a fastening member.

Assignees

• Lg Electronics Inc

Inventors

• Nam Hyukjin
• Jeon Joonho
• Kim Myonghwan
• Cho Jinyoung
• Shin Daehyun
• Yoon Byoungsu
• Park Giyob
• Woo Byungwook
• Kim Jungguen
• Mun Hyunrok

Classifications

• H02S40/345

  with cooling means associated with the electrical connection means, e.g. cooling means associated with or applied to the junction box (cooling means for PV cells H10F77/63, for PV modules H02S40/42) · CPC title

• H02S40/30

  Electrical components · CPC title

• H02S40/34

  comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes · CPC title

• H02S40/00 Primary

  Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00 · CPC title

• H02S40/32 Primary

  comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules · CPC title