The present application discloses a back junction solar cell and a preparation method therefor. The back junction solar cell comprises: a P-type silicon substrate; a tunneling oxide layer, an N-type doped silicon layer and a first passivation anti-reflection layer which are sequentially arranged on a first main surface of the P-type silicon substrate in a stacked manner from inside to outside; a back electrode which penetrates through the first passivation anti-reflection layer to be electrically connected with the N-type doped silicon layer; a P+ local front surface field formed by Group III elements and a front electrode formed by Group III elements arranged on a second main surface of the P-type silicon substrate, wherein the front electrode is connected to the local front surface field, and the position of the local front surface field corresponds to the position of the front electrode; a second passivation anti-reflection layer formed on the second main surface of the P-type silicon substrate in a region where the front electrode is not arranged and on the front and lateral sides of the front electrode.

Methods of soldering wire, such as traces or ribbon, onto single or multi-busbar solar cells. Devices constructed with such methods may also be covered. Methods may include providing a wire, such as a trace or ribbon, tack soldering the wire at one or more locations to a workpiece, such as solar cell component, and then passing the combined tacked wire and solar cell component through a heating zone where heat is applied to the backside of the solar cell component such that solder in contact with the wire melts and solders the wire to the solar cell component.

Systems, methods, and apparatuses for supplying power to at least one power consuming device using a solar panel. The solar panel includes at least two solar modules, an output connector, and a cable. The at least two solar modules are connected via a first electrical harness in a first combination of parallel and/or series to provide a first output voltage and via a second electrical harness in a second combination of parallel and/or series to provide a second output voltage. The at least one power consuming device is preferably a rechargeable battery.

The invention relates to a solar panel comprising: a transparent plate. back-contacted solar cells adhered to the transparent plate. a back-contact foil (302) electrically and mechanically connected to the solar cells, the back-contact foil equipped with a metallisation pattern facing the solar cells, a laminate attached to the back-contact foil. characterized in that the back-contact foil shows one or more flaps (304), the end of the flaps more removed from the transparent plate than from the laminate. The back-contact foil is embedded in encapsulant. By adding flaps to the back-contact foil, it is possible to have the end of the flaps extending out of the encapsulant. This enables, for example, the use of connectors for making electric contact to the end of the flaps.

Polymer materials, in particular materials including one or more polymers where the degree of electrical conductivity may be controlled. Materials, for example one or more polymers (or monomers and/or oligomers), optionally one or more easily-processable, thermo-transformable polymers, including one or more electron rich domains, which can be exposed to at least one of: sufficient temperature (for example for temperature-dependent processing), a mechanical force/pressure, magnetic field and/or an electric field, and consequently increase the conductivity of the materials. Methods of forming the materials and applications and uses thereof.

The present application relates to a conductive component, a solar cell string, and a photovoltaic module. An outer periphery of the conductive component is defined with a plurality of welding regions and a plurality of adhesive bonding region. The welding regions and the adhesive bonding regions are arranged alternately in a first direction. The outer periphery of the conductive component is provided with a plurality of flux parts respectively corresponding to the plurality of welding regions. Each of the flux parts is at least partially coated, along a perimetral direction of the conductive component, on the conductive component in a corresponding one of the welding regions.

A back contact cell includes a cell substrate and first insulation members. Fingers having two polarities are alternately arranged on a back surface of the cell substrate. The back surface includes current collection regions and non-current collection regions which are distributed in a staggered manner. The first insulation members are arranged at edges of the non-current collection regions in a continuous manner in an extension direction of the current collection regions, and cover portions of the fingers located in the non-current collection regions close to the current collection regions.

Systems, methods, and articles for a portable power case are disclosed. The portable power case is comprised of at least one battery and at least one PCB. The portable power case has at least two access ports and at least one USB port. The portable power case is operable to supply power to an amplifier, a radio, a wearable battery, a mobile phone, and a tablet. The portable power case is operable to be charged using solar panels, vehicle batteries, AC adapters, non-rechargeable batteries, and generators. The portable power case provides for modularity that allows the user to disassemble and selectively remove the batteries installed within the portable power case housing.

Provided is a photovoltaic module, including a first intermediate busbar having a first lead-out terminal provided at an end thereof; a second intermediate busbar having a second lead-out terminal provided at an end thereof; and a first jumper wire arranged on a first isolation bar; the first lead-out terminal and the second lead-out terminal are located on two opposite sides of the first jumper wire, and the first lead-out terminal and the second lead-out terminal abut against two opposite side surfaces of the first isolation bar or overlap a top surface of the first isolation bar. Compared with the related art, the first isolation bar where the first jumper wire is located is clamped or pressed by the first lead-out terminal and the second lead-out terminal, to prevent short circuit or shielding of the cell caused by free movement of the first jumper wire, the first and second intermediate busbars.

Wire-based metallization and stringing techniques for solar cells, and the resulting solar cells, modules, and equipment, are described. In an example, a substrate has a surface. A plurality of N-type and P-type semiconductor regions is disposed in or above the surface of the substrate. A conductive contact structure is disposed on the plurality of N-type and P-type semiconductor regions. The conductive contact structure includes a plurality of conductive wires, each conductive wire of the plurality of conductive wires essentially continuously bonded directly to a corresponding one of the N-type and P-type semiconductor regions.