SOLAR BATTERY MODULE AND MANUFACTURING METHOD THEREOF

• US 20130098423A1
• Filed: 07/02/2010
• Published: 04/25/2013
• Est. Priority Date: 07/02/2010
• Status: Active Grant

• Current Assignee: LONGi Green Energy Technology Co., Ltd.
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Suzuki, Masayoshi, Shimasaki, Koji
• Granted Patent: US 9,515,214 B2
• Time in Patent Office: Days
• US Class Current: 136/244
• CPC Class Codes: H01L 31/0201 comprising specially adapted module bus-bar structures
• CPC Class Codes: H01L 31/05 Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells electrodes H01L31/0224; electrical interconnection of thin film solar cells formed on a common substrate H01L31/046; particular structures for electrical interconnecting of adjacent thin film solar cells in the module H01L31/0465; electrical interconnection means specially adapted for electrically connecting two or more PV modules H02S40/36
• CPC Class Codes: H01L 31/0504 specially adapted for series or parallel connection of solar cells in a module
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

A solar battery module includes: a plurality of solar battery cells, a plain shape of each being a substantial rectangle, and a ratio of a short side length and a long side length of the substantial rectangle being 1/n:1 (n is an integer equal to or larger than 2), includes a plurality of light-receiving-surface bus electrodes parallel to the short side of the substantial rectangle on a light receiving surface, and includes rear-surface bus electrodes each at a position on a non-light-receiving surface corresponding to each of the light-receiving-surface bus electrodes; and a light-receiving-surface lead (an interconnector) that electrically connects the light-receiving-surface bus electrodes of one of the solar battery cells to the rear-surface bus electrodes of adjacent one of the solar battery cells.

Claims

1. A solar battery module comprising:

a plurality of solar battery cells, a plain shape of each being a substantial rectangle, and a ratio of a short side length and a long side length of the substantial rectangle being 1/n;

1 (n is an integer equal to or larger than

     2), includes a plurality of light-receiving-surface bus electrodes parallel to the short side of the substantial rectangle on a light receiving surface, and includes rear-surface bus electrodes each at a position on a non-light-receiving surface corresponding to each of the light-receiving-surface bus electrodes; and

an interconnector that electrically connects the light-receiving-surface bus electrodes of a first one of the solar battery cells to the rear-surface bus electrodes of an adjacent second one of the solar battery cells, wherein a predetermined number of the solar battery cells are serially connected to each other, thereby configuring a cell string, n columns of the cell strings are connected in parallel, and the n-column parallel-connected cell strings are further serially connected, thereby configuring an entire cell array.

4. The solar battery module according to claim 1, wherein a predetermined number of the solar battery cells are serially connected, thereby configuring a cell string, two columns of the cell strings are connected in parallel, and the two-column parallel-connected cell strings are further serially connected, thereby configuring an entire cell array.

5. The solar battery module according to claim 1, wherein the light-receiving-surface bus electrodes of the solar battery cell are formed at positions that are line-symmetrical with respect to a line passing through a middle point of a side perpendicular to an extended line of the light-receiving-surface bus electrodes and parallel to the light-receiving-surface bus electrodes.

6. The solar battery module according to claim 1, wherein the light-receiving-surface bus electrodes of the solar battery cell are formed at positions that are line-symmetrical with respect to a line passing through a middle point of a side parallel to the light-receiving-surface bus electrodes and perpendicular to the light-receiving-surface bus electrodes.

7. The solar battery module according to claim 1, wherein each of the solar battery cells includes an area where the light-receiving-surface bus electrodes and the rear-surface bus electrodes are not formed within a predetermined dimension from an edge toward a central direction of the cell at an outer circumferential edge portion thereof.

8. The solar battery module according to claim 1, which is obtained by dividing a basic solar battery cell with a plane shape thereof being a substantial square, which includes n light-receiving-surface electrode areas in each of which a plurality of light-receiving-surface bus electrodes parallel to a side of the substantial square and a plurality of grid electrodes perpendicular to the light-receiving-surface bus electrodes are provided on a light-receiving surface side and includes rear-surface bus electrodes each at a position on a non-light-receiving surface side corresponding to each of the light-receiving-surface bus electrodes into n along respective boundaries of the n light-receiving-surface electrode areas.

2-3. -3. (canceled)