Panasonic Intellectual Property Management Co., Ltd.

Sanyo Electric Co., Ltd.

Satoshi Tohoda

Shigeharu Taira

Naohiro Hitachi

Hiroyuki Kannou

Tomohiro Funatani

Masato Shigematsu

Kenta Matsuyama

Haruhisa Hashimoto

Toshiyuki Sakuma

Takeshi Nishiwaki

Yayoi Nakatsuka

Kenta Ishimura

Tomoyuki Inase

Provided is a solar cell that can suppress loss of power generation performance of a solar cell module when shaded and a solar cell module having the solar cell. An n-type low-doped region and a first main-surface side highly doped region, which has an n-type dopant concentration higher than that in the n-type low-doped region, are provided in an n-type crystalline silicon substrate. The first main-surface side highly doped region is arranged between the n-type low-doped region and a p-type amorphous silicon layer.

Solar cell and solar cell module

A solar cell module includes: a solar cell element that has a surface; a first sealing layer that is provided on the surface; and a light diffusion portion that is provided between an outer peripheral area Cof the surface and the first sealing layer in such a manner that the light diffusion portion has a curvature and that contains a resin having a reflectivity higher than that of the first sealing layer.

Solar cell module and solar cell module manufacturing method

An n-type low-doped region and a first main-surface side highly doped region, which has an n-type dopant concentration higher than that in the n-type low-doped region, are provided in an n-type crystalline silicon substrate. The first main-surface side highly doped region is arranged between the n-type low-doped region and a p-type amorphous silicon layer.

Solar cell, solar cell module, and production method for solar cell

A solar cell module is provided with: a plurality of solar cell elements each having a surface; a light diffusion portion provided in an outer peripheral area of the surface; and connection members which connect the plurality of solar cell elements. The outer peripheral area has restricted areas where formation of the light diffusion portion is restricted, in a part thereof, and the restricted areas are provided in positions where the outer peripheral area and the connection members intersect. The solar cell element may have, on the surface, bus bar electrodes which extend along the connection members. The restricted areas may be provided in the vicinity of ends of the bus bar electrodes.

A solar cell module manufacturing method is provided. This method includes: arranging a printing plate over a solar cell element in proximity to a surface of the solar cell element; providing a coating material on the printing plate; and moving a squeegee in a first direction so as to push out the coating material via the printing plate to the solar cell element, thereby applying the coating material in an outer peripheral area of the surface of the solar cell element.

Solar cell module manufacturing method

A solar cell element includes a plurality of finger electrodes and a bus bar electrode on a surface thereof. A light diffuser is provided in an outer circumferential region of the surface. The light diffuser includes first light diffusers provided along the left side and the right side of the surface, and second light diffusers provided along the upper side and the lower side of the surface. The width of the first light diffuser in a transverse direction perpendicular to the left side or the right side, is smaller than the width of the second light diffuser in a transverse direction perpendicular to the upper side or the lower side.

The solar cell () of the present invention comprises: a first electrode () including a plurality of finger portions (), and a busbar portion () connected electrically to the plurality of finger portions (), each of the plurality of finger portions () extending along a first direction (y), and the plurality of finger portions () being arrayed along a second direction (x) perpendicular to the first direction (y) leaving gaps therebetween; and a plurality of protruding portions () provided on at least one side of a first main surface (A) in the first direction (y) of the busbar portion (). The plurality of protruding portions () are provided so that the total perimeter of the protruding portions () per unit area at the ends of the first main surface (A) in the second direction (x) is longer than the total perimeter of the protruding portions () per unit area in the central portion. By means of these characteristics, the solar cell of the present invention is able to effectively suppress delamination of wiring material () by suppressing delamination of the ends, which is where delamination of the wiring material begins when the wiring material () is connected to the busbar.

In a method for manufacturing a solar cell, a photoelectric conversion element, which has a surface whose outer periphery is surrounded by a plurality of sides, and a coating having light diffusivity are prepared. The coating is applied to an outer peripheral area of the surface by screen printing in a direction from a lower side, which is one of the sides, toward an upper side, which is one of the sides and which is opposed to the lower side such that an application amount of the coating to be applied along the lower side is smaller than an application amount of the coating to be applied along the upper side.

Solar cell and solar cell manufacturing method

A solar cell module manufacturing method is provided. This method includes: preparing a solar cell element that has a surface whose outer periphery is surrounded by a plurality of sides, an encapsulant that seals the solar cell elements, and a coating that has light diffusivity; applying the coating in an outer peripheral area of the surface via a printing plate that has a pattern corresponding to the outer peripheral area and in which a protection member is provided at a position that corresponds to a corner portion located between two sides of the plurality of sides, the two sides extending in directions that intersect with each other; and sealing, with the encapsulant, the solar cell element on which the coating is printed.

A drying holder holds a solar cell in an upright state, and is used in an electrode drying process. The drying holder is provided with a base part on which the solar cell is placed, and a support part that is disposed on the base part, and forms a support slot that is capable of accommodating the solar cell. Vents are formed on the base part and/or the support part.

Drying holder for solar cell and method for producing solar cell

In a method for manufacturing a solar cell, a first electrode is formed on one surface of a photoelectric conversion section by means of screen printing using a conductive paste, and a second electrode having an area larger than that of the first electrode is formed on the other surface of the photoelectric conversion section by means of screen printing using a conductive paste having viscosity lower than that of the conductive paste.

Solar cell manufacturing method

Solar battery cell

Disclosed is a solar cell module that includes: a plurality of solar cells; wiring material electrically connecting solar cells with each other; and resin adhesive that bonds solar cells and wiring material together. Solar cells each include photoelectric conversion body and electrode. Electrode includes finger electrode. Finger electrode extends in direction y orthogonal to direction x in which wiring material extends. In bonding area of finger electrode bonded to wiring material, an end portion on one side in direction y in which finger electrode extends is bonded to wiring material with lower bonding strength than at least part of the other portion of bonding area.

Solar cell module and solar cell

A solar cell module includes solar cells. Each solar cell has a first bus bar electrode on one principal surface, and a second bus bar electrode on the other principal surface; and a conductive connecting member. The conductive connecting member has a first principal surface in an uneven shape and a second principal surface in a flat shape, the second principal surface being on an opposite side of the first principal surface. The first bus bar electrode is connected to the second principal surface of the conductive connecting member. The second bus bar electrode is connected to the first principal surface of the conductive connecting member. A region width of the second bus bar electrode in a short side direction of the conductive connecting member is larger than that of the first bus bar electrode.

Growing community of inventors

Osaka, Japan

Satoshi Tohoda