43 results about "Tandem cell" patented technology

The present invention relates to an industrial applicable process for the preparation of materials with nanometric dimensions and controlled shape, based on titanium dioxide. The invention also relates to a process for the preparation of titanium dioxide nanorods with anatase phase composition, which are highly suitable for applications involving photovoltaic cells, particularly Dye Sensitized Solar Cells (DSSC), photoelectrolysis cells and tandem cells for the conversion of solar energy and the production of hydrogen.

A method for forming a thin film photovoltaic device. The method includes providing a transparent substrate comprising a surface region. A first transparent electrode layer is formed overlying the surface region. A multilayered structure including a copper material and an indium material is formed overlying a electrode surface region. The multilayered structure is subjected to a plurality of sulfur bearing entities during a rapid thermal process to form an absorber material comprising a copper entity, an indium entity, and a sulfur entity. The rapid thermal process uses a ramp time ranging from about 10 Degrees Celsius / second to about 50 Degrees Celsius / second. In a specific embodiment, the first transparent electrode layer is maintained to a sheet resistance of less than or equal to about 10 Ohms / square centimeters and an optical transmission of 90 percent and greater.

A high efficiency small molecule tandem solar cell is disclosed. The tandem cell may include a first subcell comprising a first photoactive region and a second subcell comprising a second photoactive region. The first and second photoactive regions are designed to minimize spectral overlap and maximize photocurrent. The device may further include an interconnecting layer, disposed between the first subcell and the second subcell, that is at least substantially transparent.

The invention provides a series electrolytic cell without wire connection, which is formed by connecting a plurality of electrolytic chamber components, and the electrolytic chamber component includes a bottom plate (1) and an open upper frame surrounded by two narrow side walls (2). Both the front and rear edges of the box have overhanging connecting edges (2.1, 2.2) perpendicular to the bottom plate and the two side walls, and connecting holes (3) are distributed on the connecting edges. There is a hollow plate positioning window (5) for placing the electrode plate in the middle of the plate (4); there is a corrosion-resistant pad between the rear connecting edge (2.1) of one electrolytic chamber assembly and the front connecting edge (2.2) of the other electrolytic chamber assembly. The silicone rubber sealing strip (8) is connected with bolts (9) through the connecting holes (3) on the front and rear connecting sides, and multiple electrolytic chamber components are connected in sequence to form a series electrolytic cell with multiple electrolytic chambers. Only the first electrolytic chamber And the last electrolytic chamber is connected with the positive and negative poles of the power supply respectively, and each pole plate positioning window (5) is equipped with a pole plate clamping mechanism. It is a green environmental protection equipment that electrolyzes lead slime in waste batteries to finally obtain electrolytic lead.

The invention discloses a preparation method of a perovskite / MWT heterojunction series-parallel composite battery, and relates to the technical field of solar battery production. By introducing MWT back contact technology to connect two series cells in parallel to obtain higher photoelectric conversion efficiency. The series-parallel composite battery includes two perovskite / MWT heterojunction tandem batteries. The front side of the titanite / MWT heterojunction tandem cell is equipped with a front electrode, and the perovskite / MWT heterojunction tandem cell is pierced with a plugging electrode; several positive electrode points are connected to the back electrode layer, and several negative electrode points pass through The plugging electrode is connected to the grid line of the front electrode; the positive electrode point is connected to the conductive lead wire of the positive electrode point, and the negative electrode point is connected to the conductive lead wire of the negative electrode point. The composite battery structure has higher stacking efficiency.

The embodiment of the present invention discloses a balanced charging circuit and its device for batteries connected in series. The circuit includes: a control unit, a switch unit, a detection unit, a voltage detection unit, and a switching unit. The detector of the detection unit is used to detect The voltage across the power element; the voltage detection unit is used to detect the voltage of each battery in the battery pack; the control unit is used to calculate the charging path between the power supply device and the battery pack based on the voltage across the power element detected by the detector The charging current, when the charging current is greater than the preset current value or when the voltage of each battery detected by the voltage detection unit is greater than the preset voltage value, a disconnection control signal is sent; the switch unit is used to disconnect the battery according to the disconnection control signal. The charging path between the power supply device and the battery pack; the switching unit is used to switch the number of batteries to be charged in the battery pack. The balanced charging circuit and device of the series battery of the present invention have simple structure, low cost, high reliability and safety.

The invention discloses a sandwich serial-type PIN-structure alpha irradiation battery and a manufacturing method thereof. The sandwich serial-type PIN-structure alpha irradiation battery and the manufacturing method thereof mainly solve the problems that an existing nuclear battery is low in energy transformation ratio and output power. The sandwich serial-type PIN-structure alpha irradiation battery comprises an upper PIN junction, a lower PIN junction and an alpha radioactive source layer, wherein the upper PIN junction and the lower PIN junction are connected in series. The upper PIN junction sequentially comprises an N-type epitaxial layer ohmic contact electrode, an N-type highly-doped epitaxial layer, a P-type low-doped epitaxial layer, a P-type SiC substrate and a P-type ohmic contact electrode from bottom to top. The lower PIN junction sequentially comprises an N-type ohmic contact electrode, an N-type SiC substrate, an N-type low-doped epitaxial layer, a P-type highly-doped epitaxial layer and a P-type epitaxial layer ohmic contact electrode from bottom to top. The alpha radioactive source layer is clamped between the epitaxial layer ohmic contact electrode of the upper PIN junction and the epitaxial layer ohmic contact electrode of the lower PIN junction, so that high-energy alpha particles are fully utilized. The sandwich serial-type PIN-structure alpha irradiation battery and the manufacturing method thereof have the advantages that the contact area of a radioactive source and a semiconductor is large, the nuclear raw material utilization rate and the energy harvesting rate are high, and the output voltage of the battery is large; the battery can supply electricity to a small circuit enduringly.

The invention discloses a battery module and a method for connecting battery modules in series. The main content is as follows: the battery module is connected with the positive end of a battery bus, the negative end of the battery bus and a battery power-on bus to power external modules and be self-powered; the battery module comprises first to fourth diodes, a first switch, a load, a battery pack, and first to sixth interfaces; and the negative electrode of the battery pack is connected with the negative end of the battery bus through the sixth interface and is connected with the negative end of the load through the fourth diode, and the negative end of the load is connected with the negative end of the battery bus through the fifth interface. As the fourth diode with reverse cut-off characteristic is added between the negative end of the load and the negative electrode of the battery pack, and a wire is added between the negative end of the load and the negative end of a power bus, a plurality of battery modules only take electricity from the battery bus when being connected in series, the discharge currents of the battery modules are consistent, and service life shortening of the battery module is avoided.

The present invention relates to a process for the preparation of materials with nanometric dimensions and controlled shape, based on titanium dioxide. The invention also relates to a process for the preparation of titanium dioxide nanorods and nanocubes with anatase phase composition, which are highly suitable for photocatalytic use, in particular for applications involving photovoltaic cells, for example Dye Sensitized Solar Cells (DSSC), photoelectrolysis cells and tandem cells for the conversion of solar energy and the production of hydrogen.

The invention relates to an overlapping type string welder. The overlapping type string welder comprises a feeding device, a detecting device, a transportation adjusting device, a solder feeding device, an overlapping device and a welding device, wherein the feeding device, the detecting device, the transportation adjusting device, the solder feeding device, the overlapping device and the welding device are arranged along a conveying line; the solder feeding device is used for adding a conductive solder at one end of each cell; the overlapping device is used for overlapping the cells which are processed by the solder feeding device; the overlapping region of adjacent cells is capable of covering the conductive solder; the welding device is used for heating the conductive solder to form cell strings. The overlapping type string welder is capable of realizing an overall production process including welding and discharging of a single cell and tandem cell strings, is relatively high in production efficiency and is capable of satisfying the requirements of large-scale production.