283 results about "Battery bank" patented technology

The application belongs to the technical field of photovoltaics, and provides a back contact cell, a cell module and a photovoltaic system. The back contact cell comprises a silicon substrate, a first doped layer and a second doped layer arranged on the back surface of the silicon substrate, and the doping type of the second doped layer is opposite to that of the first doped layer. The first doped layer comprises a first lightly doped part, and the second doped layer comprises a second lightly doped part. The first lightly doped part is arranged adjacent to the second lightly doped part, and the doping concentration of the first lightly doped part and the second lightly doped part is less than or equal to 1E19 / cm 3 3. A first tunneling layer arranged between the silicon substrate and the first doped layer, and a second tunneling layer arranged between the silicon substrate and the second doped layer. An isolation layer is arranged between the first lightly doped part and the second lightly doped part. The back contact cell of the application does not need to arrange a groove on the silicon substrate to isolate the first doped layer and the second doped layer, thereby avoiding the serious recombination loss caused by the groove, and being beneficial to improving the cell conversion efficiency.

The embodiment of the application provides an IBC battery and an IBC battery assembly, relates to the photovoltaic power generation technical field, and the IBC battery comprises a silicon substrate, a main grid and a limiting component; the main grid is arranged on the back light surface of the silicon substrate; the limiting component is connected with the back light surface, and the limiting component is located on both sides of the main grid along the length direction of the main grid; along the vertical direction of the back light surface, the height of the limiting component is greater than the height of the main grid. By arranging the limiting component on both sides of the main grid, the limiting space can be formed to limit and fix the solder strip, and the alignment accuracy is improved. The offset between the solder strip and the main grid can be avoided, so that the short circuit of the IBC battery can be avoided, and the safety factor is improved.

This invention relates to the field of microgrid control and discloses a method for regulating a highway service area microgrid based on distributed photovoltaic energy storage. The method includes the following steps: First, traffic flow data is collected to construct a traffic-energy potential field model, mapping discrete vehicles to a continuous potential field to predict net power demand. Second, a kinetic-thermal entropy mapping is constructed using vehicle kinetic energy characteristics, and battery thermal management feedforward control is executed before load arrival. Simultaneously, variational mode decomposition parameters are adaptively adjusted according to the potential field gradient to decompose the power command into high-frequency and mid-to-low-frequency components. The high-frequency components are absorbed by supercapacitors, while the mid-to-low-frequency components are collaboratively distributed among battery packs based on a virtual complex impedance model constructed using health status and temperature. This invention achieves proactive defense against impact loads and refined lifespan extension of energy storage through traffic-energy cross-domain coupling, significantly improving the voltage rigidity and operational stability of the microgrid under extreme conditions.

The invention relates to printable ion-conductive and viscosity-tunable inks based on two-dimensional (2D) insulators, forming methods and applications of the inks. The 2D insulating material based printable ink includes at least one solvent; and an exfoliated composition dispersed in the at least one solvent. The exfoliated composition includes a 2D insulating material and a dispersant and stabilizing agent. The printed structures of the 2D insulating material based printable ink possess high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are an ideal set of characteristics for printable battery components such as separators and solid electrolytes.

This invention discloses a transfer-type laminator system and transfer method. The system includes a conveyor line, a reversing elevator, a lamination zone buffer transmission line, multiple modular laminator integrations, and multiple shared lifting conveyors. The conveyor line, reversing elevator, and lamination zone buffer transmission line are arranged sequentially with corresponding transmission positions. The multiple modular laminator integrations are arranged sequentially at intervals. The shared lifting conveyors travel between the lamination zone buffer transmission line and the modular laminator integrations to transfer solar cell modules from the lamination zone buffer transmission line into the modular laminator integrations. This invention offers flexible layout, strong scalability, improved adaptability, high capacity per unit area, improved production efficiency, and lower cost.

Provided in the present disclosure is a back-contact solar cell, comprising a silicon substrate having non-recessed regions and recessed regions alternately arranged on a rear surface thereof and having extensions protruding above the recessed regions at edges between the non-recessed regions and the recessed regions. A first dielectric layer and a first conductivity-type doped layer are stacked on the non-recessed regions and the extensions. A second dielectric layer comprises a first portion on the first conductivity-type doped layer and a second portion in the recessed regions. A second conductivity-type doped layer is stacked on the first portion and the second portion.

A photoelectric conversion element includes: a back electrode layer formed on a substrate; a photoelectric conversion layer facing a light receiving surface side of the back electrode layer and containing a chalcogen semiconductor; and a current collector electrically connected to the light receiving surface side of the photoelectric conversion layer, in which a first region including an interface between the back electrode layer and the photoelectric conversion layer and a second region not including an interface between the back electrode layer and the photoelectric conversion layer are provided on the substrate, and a joined portion between the current collector and a wiring member is formed in the second region.

Disclosed in the present invention is a perovskite solar cell module. The cell module comprises: a substrate; a first common conductive region, which is disposed on a first surface of the substrate; a second common conductive region, which is disposed on the first surface of the substrate, the second common conductive region and the first common conductive region being spaced apart and insulated from each other on the first surface; a functional coating region, which is disposed on the first surface of the substrate, the vertical projection of the functional coating region on the substrate not overlapping with the vertical projection of the first common conductive region on the substrate and the vertical projection of the second common conductive region on the substrate, and the functional coating region comprising a plurality of sub-cell groups; and a plurality of first lead-out electrodes and a plurality of second lead-out electrodes, which are disposed on the first surface of the substrate, wherein the first lead-out electrodes are configured to electrically connect bottom electrodes of the sub-cell groups to the first common conductive region, and the second lead-out electrodes are configured to electrically connect top electrodes of the sub-cell groups to the second common conductive region. The present invention enables the voltage and current of the perovskite solar cell module to be controllable.

The utility model is suitable for photovoltaic technical field provides a kind of battery component and photovoltaic system, battery component includes: several cell strings, cell string includes the several cell piece connected in series by welding band, and the several cell piece includes the first cell piece located at the end of cell string, the second cell piece adjacent to first cell piece;Busbar is set on the back of second cell piece;Along first direction, second cell piece includes oppositely arranged first edge and second edge, and second edge is set away from first cell piece compared with first edge, and the back of second cell piece is provided with several thin grids;The distance of busbar to first edge is d1, and 0.1mm The utility model discloses a battery component can reduce the risk of cell piece hidden crack and crack in lamination process, and can reduce short-circuit risk, to improve battery component production yield.

The application provides a solar cell, a battery assembly and a photovoltaic system. The solar cell comprises: a leakage region between a first region and a second region; the leakage region comprises a first sub-region and a second sub-region; a first doped layer is located in the first region, and a second doped layer is located in the second region; a first leakage doped layer is located in the first sub-region, and a second leakage doped layer is located in the second sub-region; the first leakage doped layer is connected with the first doped layer, and the second leakage doped layer is connected with the second doped layer; the first leakage doped layer is not in contact with a preset region of a side surface of the first leakage doped layer adjacent to a base of the second sub-region; and the second leakage doped layer is not conductive with the first leakage doped layer when the light intensity is less than a set value. The application can improve the weak light response of the solar cell assembly.

The embodiments of the present application provide a silicon wafer, a silicon rod, a cell, and a cell assembly. At least one surface of the silicon wafer is provided with a plurality of stripes; the stripes extend with reference to a first direction, and the plurality of stripes are arranged at intervals in a second direction; the peak-to-valley height difference Rt of the surface profile of the middle region of the surface satisfies: 2 μm ≤ Rt ≤ 8.5 μm; the first direction is the extension direction of a first side edge of the silicon wafer, and the second direction is the extension direction of a second side edge of the silicon wafer; and the middle region refers to a region at least L / 3 away from the first side edge of the silicon wafer in the second direction, wherein L is the length of the second side edge. The flatness of the surface of the silicon wafer is relatively uniform, which can improve the photoelectric conversion efficiency of a cell to which the silicon wafer is applied.

The embodiment of the present application provides a perovskite solar cell and a perovskite solar cell module, the perovskite solar cell comprising: a light absorption layer, an up-conversion layer, a first conductive layer and a second conductive layer for collecting opposite type carriers, and a first transport layer and a second transport layer for transporting opposite type carriers, the first conductive layer being a transparent conductive layer, wherein the first transport layer is arranged between the first conductive layer and the light absorption layer, the second transport layer is arranged between the up-conversion layer and the second conductive layer, and the up-conversion layer is arranged on the side of the light absorption layer away from the first transport layer; the up-conversion layer is a halide perovskite structure member of a light-emitting dopant, and the light absorption layer is a perovskite structure member. The energy conversion efficiency of the perovskite solar cell can be effectively improved.

A multi-layered thermal protection structure for hypersonic vehicles and its fabrication method are disclosed, relating to the field of hypersonic vehicle thermal protection technology. The structure comprises, from the outside in, a C / SiC composite material layer, a vacuum buffer layer, a white calcium carbonate layer, a solar cell module, and a thermoelectric generator. Through a five-layer synergistic design, multi-dimensional protection is achieved: the C / SiC composite material layer directly resists extreme high temperatures and ablation; the vacuum buffer layer blocks solid-state heat conduction, reducing heat transfer inwards; the white calcium carbonate layer reflects radiant heat, reducing heat input; and the solar cell module and thermoelectric generator convert residual heat into electrical energy, actively consuming heat. This integrated "blocking-reflection-conversion" design improves thermal protection efficiency by more than 40%, enabling the internal structure temperature to be controlled within a safe range of ≤100℃ even in extreme environments of 2000℃-3000℃. This invention achieves a comprehensive balance of high-temperature resistance, ablation resistance, low thermal conductivity, and high toughness.

This application relates to the field of solar cell technology, and provides a back contact cell, a cell module, and a photovoltaic system. In the back contact cell, the tunneling silicon oxide layer includes a first portion located on a first region, a second portion located on a second region, and a third portion located on an isolation region. A first doped portion is disposed on the first portion, a second doped portion is disposed on the second portion, and an isolation portion is disposed on the third portion. The first doped portion and the second doped portion are separated by the isolation portion. The chemical formula of the tunneling silicon oxide layer is SiO₂. X In the first and second parts, x takes values ​​from 1 to 1.9, and in the third part, x takes values ​​from 1.3 to 2, with the value of x in the third part being greater than that in the first and second parts. Thus, by applying the aforementioned specific differentiated design to different portions of the corresponding region of the tunneling silicon oxide layer, an optimal combination of performance can be achieved overall, thereby improving the performance and conversion efficiency of the back contact battery.

A modular solar panel including multiple solar panel modules. Each solar panel module includes a solar cell assembly. The solar cell assembly includes a protective glass, a base plate, a solar cell array located therebetween, and an electrical connection ribbons extending from the ends of the solar cell array. The solar panel module further includes one or more coupling modules. Each coupling module includes an interior cavity to receive one end of the solar cell assembly, two or more magnets removably embedded in the coupling module, a pin joint located on exterior of a first coupling module to interlock with a pin joint located on exterior of a second coupling module, and an electrical connection plug to receive one of the first and the second electrical connection ribbons. The electrical connection plug of the first coupling module electrically connects with an electrical connection plug of the second coupling module.

A back-contact solar cell, a battery assembly and a photovoltaic system. In the back-contact solar cell, several grooves arranged at intervals are formed in a back surface of a silicon wafer, so as to divide the back surface of the silicon wafer into several first regions and second regions that are alternately arranged in sequence, in an arrangement direction of the first regions and the second regions, the silicon wafer is provided on the first regions and the edges of the grooves with extension portions that extrude to the upper side of the grooves, and second polarity doping layers are disposed on second tunneling layers in a stacked manner and have a preset distance with the edges of the grooves.

A method is disclosed that includes triggering a beam failure recovery procedure for at least one cell of the secondary cell group in response to activating the secondary cell group if one or more predefined conditions are met.

Disclosed herein is a composition for a solar cell encapsulant, the composition comprising: (a) a first resin including an ethylene-based copolymer; and (b) a second resin including an aromatic vinyl-(meth)acrylate-based copolymer. According to the present invention, due to excellent light transmittance and anti-PID performance, it is possible to prevent a reduction in the electrical performance of a solar cell module and ensure the productivity of the solar cell module.

The application is suitable for the field of photovoltaic technology, and provides a back contact cell, a cell assembly and a photovoltaic system. The back contact cell comprises: a silicon substrate, the silicon substrate comprising a back surface; a first doped polysilicon layer and a second doped polysilicon layer arranged on the back surface; a first tunneling layer arranged between the first doped polysilicon layer and the silicon substrate; a second tunneling layer arranged between the second doped polysilicon layer and the silicon substrate; a first isolation layer arranged between the second doped polysilicon layer and the first doped polysilicon layer, the doping concentration of the first isolation layer being less than the doping concentration of the first doped polysilicon layer, and the doping concentration of the first isolation layer being less than 5E17 / cm 3 ; a leakage tunneling layer connecting the second doped polysilicon layer and the first doped polysilicon layer; a first electrode directly contacting the first doped polysilicon layer; and a second electrode directly contacting the second doped polysilicon layer. The back contact cell can avoid serious recombination loss caused by groove opening and reduce the risk of hot spot.

This application relates to the field of solar cell technology, and provides a back-contact solar cell, a cell module, and a photovoltaic system. In the back-contact solar cell, a first doped structure and a second doped structure are alternately arranged in a first direction. The first doped structure includes a plurality of first doped portions spaced apart along a second direction, with a first gap between adjacent first doped portions. The second doped structure includes a plurality of second doped portions spaced apart along the second direction, with a second gap between adjacent second doped portions. This can reduce parasitic absorption on the back side, improve the bifaciality of the back-contact solar cell, and effectively reduce metallization recombination, thereby improving the efficiency of the back-contact solar cell.

This application discloses an in-situ polymerized amide-based polymer with polysulfide anionic terminal groups, its preparation method, and its application. Using DMAA as the monomer and NaOTF as the sodium salt source, anionic polymerization is carried out under the initiation of polysulfide anions to obtain PDMAA oligomers with terminal polysulfide anionic groups. After battery assembly, in-situ polymerization is used to construct a continuous organic sulfur amorphous phase and a flexible polymer network in the electrode and separator regions, achieving the fixation of polysulfide terminal groups and NaOTF. + The electrolyte primarily utilizes single-ion conduction; a sulfur-containing SEI protective layer is formed on the sodium metal surface to inhibit dendrite growth and reduce interfacial impedance. After 500 cycles at 0.2 C rate, the coulombic efficiency of the full cell is greater than 99.9%. The ion conduction efficiency and interfacial stability of the solid electrolyte are synergistically improved through the design of polysulfide anion end groups and in-situ polymerization strategy. The process is simple and low-cost, making it suitable for the large-scale application of high-safety, long-life solid sodium metal batteries.

The application is suitable for the technical field of solar cells, and provides a back contact cell assembly and a photovoltaic system. The back contact cell assembly comprises a first cell string and a second cell string; the first cell string comprises a first cell piece, a second cell piece and a series welding strip, and the second cell string comprises a third cell piece; a parallel welding strip; a plurality of electric connection structures of a first polarity electrically connecting the first cell piece and the third cell piece; a bus bar arranged on the first cell piece and electrically connected with the parallel welding strip; an insulating strip electrically isolating the bus bar and the series welding strip; the last electric connection structure of the parallel welding strip connected with the first cell piece is a first structure; a first section and a second section of the parallel welding strip are both electrically connected with the electric connection structure of the first polarity of the first cell piece and are respectively located on two sides of the bus bar, and the first section is located between the bus bar and the first structure; in the case that the back contact cell assembly is subjected to AM1.5 light, the current measured by the first section is greater than the current measured by the second section.

A method for mounting a solar cell module onto a vertical building-material frame, the solar cell module having a photovoltaic layer containing a perovskite compound disposed on a substrate, includes, with the solar cell module having a first mounting member attached to at least one of upper and lower ends of the solar cell module, attaching a second mounting member to at least one of upper and lower portions of the building-material frame, attaching a wire storage section to the second mounting member, and coupling the first mounting member to the second mounting member, and, within the wire storage section, connecting a first lead wire of the solar cell module to a first main wire and connecting a second lead wire of the solar cell module to a second main wire.

This invention provides a solar cell module mounting structure that can suppress changes in the total current generated by multiple solar cell modules when the direction of the irradiated light changes. [Solution] The mounting structure for the solar cell module 11 comprises a plurality of flexible solar cell modules 11 that are attached to the same curved surface formed on the back of the vest 14 worn by the user. The solar cell module 11 has a plurality of rectangular plate-shaped cells 13 that are electrically connected in series with each other. The plurality of cells 13 in the solar cell module 11 are arranged in a line such that the width direction is the direction of alignment. At least one of the plurality of solar cell modules 11 is arranged such that the longitudinal direction of the cells 13 is different from that of the other solar cell modules 11.

The application provides a solar cell, which comprises a front surface provided with at least one main grid line and a plurality of sub-grid lines arranged at intervals and vertically to the main grid line, and is characterized in that further comprising a back surface provided with a plurality of fine grid lines arranged at intervals and in parallel to the sub-grid lines. The application also provides a double-sided shingle module with the cell structure and a printing screen for printing the back surface structure of the cell. The back surface structure of the application replaces the full back surface covering of the existing back surface with aluminum paste with fine grid lines formed by aluminum paste, which can reduce the amount of aluminum paste in the back surface and improve the output power of the cell module, so that the conversion efficiency of the shingle module can reach 24.48% at most, and the optimal interval and line width of the fine grid lines are provided; and the warping degree of the back surface of the cell after sintering can be kept within the range of 1.1-1.3 mm.

The present application is applicable to the technical field of solar cells, and provides a back contact cell (100), a solar module and a photovoltaic system. The back contact cell (100) includes a cell substrate (10) and first insulation members (21); alternately arranged fingers having two polarities are formed on a back surface of the cell substrate (10); the back surface includes current collection regions (13) and non-current collection regions (14) which are distributed in a staggered manner; and the first insulation members (21) are arranged at edges of the non-current collection regions (14) in a continuous manner in an extension direction of the current collection regions (13), and cover portions of the fingers located in the non-current collection regions (14) close to the current collection regions (13).

To provide a solar module enabling prevention of a large decrease in power generation efficiency by decoupling only a cell group where an in-module failure has occurred. A solar module in which a plurality of solar cell groups, each including a plurality of solar cells, is arranged and connected via an in-module parallel connection line, wherein the solar cell groups each include a cell group controller that monitors a power generation state of the solar cells in the solar cell group and that has a switch for decoupling the solar cell group from the in-module parallel connection line upon detection of a power generation amount falling below a preset value.

The application relates to a perovskite solar cell and a preparation method, a laminated solar cell, an assembly, a system, an electricity-using device and a power generation device. The perovskite solar cell comprises a perovskite light-absorbing layer and an additive, the perovskite light-absorbing layer comprises a tin-containing perovskite material, the additive comprises a vitamin C derivative, and the additive is located in the perovskite light-absorbing layer and / or on the surface of the perovskite light-absorbing layer. By adding the vitamin C derivative as the additive in and / or on the surface of the perovskite light-absorbing layer of the tin-containing perovskite material, the additive has multiple hydroxyl groups in the vitamin C structure and has a conjugated diene alcohol structure unit, has strong reducibility, can effectively reduce Sn 4+ in the perovskite light-absorbing layer to Sn 2+ , reduces defects in the perovskite light-absorbing layer, and improves the stability of the perovskite solar cell.