37results about How to "Reduce package loss" patented technology

A dual-glass photovoltaic cell module, comprising: a body (1), said body (1) comprising a first glass layer (11), a first encapsulation layer (12), a cell group layer (13), a second encapsulation layer (14), and a second glass layer (15) arranged in a sequential stack, the outer edges of the first glass layer (11) and the second glass layer (15) extending past the outer edges of the cell group layer (13); a layer of reflective coating being disposed on the second glass layer (15); an end sealing block, said end sealing block being arranged between the first glass layer (11) and the second glass layer (15) at the outer periphery of the first encapsulation layer (12), the cell group layer (13), and the second encapsulation layer (14); a rim (6) encapsulating the outer perimeter of the body (1), said rim (6) having a notch (60); and a junction box (4) being disposed at the notch (60).

The present invention discloses an optical multiplexer and a transmitter optical subassembly, and relates to the field of optics communications. A light-combining part is formed by using at least one light combiner that can combine two beams of light into one beam of light, and at least two levels of light-combining parts are used to constitute an optical multiplexer, so that 2 N beams of light are combined into one beam by using N level of light-combining parts, thereby reducing a package size and packaging loss, and reducing the complexity of a manufacturing process.

The invention discloses an ammonium sulfate crystallization method and device, and belongs to the field of chemical engineering. According to the device, two crystallizers connected in series are used, a two-effect vacuum crystallization process is adopted, the first effect is neutralization crystallization, and the second effect is evaporation crystallization. The first effect is slurry which isgenerated by neutralization and crystallization and contains fine crystal particles in a large proportion, and the second effect is an evaporation and crystallization system to obtain ammonium sulfatewith a large-particle ammonium sulfate proportion. According to the device, gas ammonia dissolution heat and neutralization heat of sulfuric acid and ammonia neutralization reaction are fully utilized, and secondary steam of the neutralization crystallizer is used as a heat source, so that the consumption of circulating water is reduced, the proportion of large-particle ammonium sulfate is increased, and meanwhile, the coating loss of caprolactam is reduced.

The invention relates to a battery string in N-type IBC solar cell spliced connection, a preparation method of the battery string, an assembly and a system. The battery string comprises strip-shaped N-type IBC solar cells and conductive parts used for Ohm connection among the strip-shaped N-type IBC solar cells, wherein the back surfaces of the strip-shaped N-type IBC solar cells comprise emitter p+ regions and base n+ regions which are alternately arranged with one another; p+ emitter contact electrodes are arranged in the emitter p+ regions; n+ base contact electrodes are arranged in the base n+ regions; the battery string further comprises p+ electrode conjunction points arranged on the p+ emitter contact electrodes and n+ electrode conjunction points arranged on the n+ base contact electrodes; insulating barrier layers are arranged in surrounding regions of the conjunction points; the conductive parts are arranged between adjacent N-type IBC solar cells. The battery string disclosed by the invention has the beneficial effects that the battery string in N-type IBC solar cell spliced connection is realized by adopting the insulating barrier layers and using the conductive part method; because the gap between two battery cells can be controlled to be 0.2mm or lower, the battery string disclosed by the invention has high assembly power compared with that adopting the traditional battery string connection manner. In addition, the assembly manufacturing process is simple, and the cost is low.

The invention discloses a surface passivation technology of a crystalline silicon solar cell. The surface passivation technology specifically comprises the following two processes: (a) a low-temperature surface thermal oxidation process and (b) a surface oxidizing and doping process, wherein in the low-temperature surface thermal oxidation process, the oxidation temperature is controlled under 800 DEG C on the premise that excellent surface passivation quality is ensured, a dead layer formed in a diffusion process is activated, and good matching with an emitter junction diffusion process is achieved; and in the surface oxidizing and doping process, impurity doping is simultaneously carried out in an oxidizing process, and doped impurities are identical with emitter junctions in conductive type. The surface passivation technology of the crystalline silicon solar cell has the advantages that the conversion efficiency of the cell is improved, and the assembly packaging loss is effectively lowered; in addition, the oxidizing process can be applied in the case that the square resistance of the emitter junctions is higher than 100 [omega], and the FF deterioration problem of the PERA cell is solved.

The invention relates to a preparation method for high open-circuit voltage polycrystalline solar cells. A temperature-variable deposition high-temperature knot pushing technology is adopted in the diffusion process, and the dense grid design of 90 fine grids is adopted by positive pole printing patterns during the positive-pole printing process. The temperature-variable deposition is the process of increasing the temperature to 860 DEG C, temperature-variable deposition for 10 min is conducted on a silicon wafer during the temperature-increasing process, the mixture gas of large N2, O2 and small N2 is led in, and the proportion, by volume, of the small N2 is 7%; the high-temperature knotting pushing process is that the temperature is kept at 860 DEG C stably, the small N2 is stopped being led in, the large N2 and the O2 are led in for impurity re-distribution, the time is controlled to be within 17 min, and the proportion, by volume, of the O2 is 15%. The preparation method enables the square resistance of the silicon wafer to be from 90omega/sq to 95omega/sq, and compared with one-time constant-temperature deposition diffusion, the polycrystalline solar cells produced under the situation that the cost is not increased can obtain the higher open-circuit voltage.

The invention provides a solar cell module and a manufacture method thereof, comprising: cutting a solar cell piece into a plurality of blocks; testing the electric properties of each block to obtainthe efficiency and the maximum working current of each block; grouping the plurality of bocks according to the efficiencies of the blocks and a plurality of predetermined efficiency intervals to obtain a plurality of first block groups; grouping a plurality of blocks in each first block group according to the maximum working currents of the blocks and a plurality of predetermined current intervalsto obtain a plurality of second block groups; and manufacturing a solar cell module by using blocks in the same second block group. The current difference between blocks in the same solar cell modulecan be reduced, thus not only reducing the luminance difference between the blocks and improving the luminance of the module, but also ensuring that the parameters of the electric properties of the blocks are highly matched, so as to reduce the packaging loss of the module and improve the power output of the module.

The invention discloses a tandem ammonium sulfate crystallization method and device, and belongs to the field of chemical engineering. According to the device, two crystallizers connected in series are used, a two-effect vacuum crystallization process is adopted, the first effect is neutralization evaporation, and the second effect is evaporation crystallization. An ammonium sulfate solution withthe concentration of about 40% neutralized and evaporated is fed into the second effect section of an evaporative crystallization system so that ammonium sulfate with a large-particle ammonium sulfateproportion is obtained. According to the device, gas ammonia dissolution heat and neutralization heat of sulfuric acid and ammonia neutralization reaction are fully utilized, and secondary steam of the neutralization evaporator is used as a heat source, so that the consumption of circulating water is reduced, the proportion of large-particle ammonium sulfate is increased, and meanwhile, the coating loss of caprolactam is reduced.

The invention belongs to the technical field of Zhuang medicines of traditional Chinese medicines, and particularly relates to application of dry paste powder of Ardisia brevicaulis Diels in preparation of anti-inflammatory and analgesic drugs. The Ardisia brevicaulis Diels is a whole dry plant of Ardisia brevicaulis Diels, and the dry paste powder of Ardisia brevicaulis Diels is extracted by adopting a water extraction and alcohol precipitation method. The invention discloses the application of the dry paste powder of Ardisia brevicaulis Diels in preparation of the anti-inflammatory and analgesic drugs for the first time. Pharmacological tests show that the dry paste powder of Ardisia brevicaulis Diels can obviously reduce the xylene-induced mouse auricle inflammation swelling degree, obviously reduce the mouse cotton ball granuloma quality, obviously improve the mouse hot plate pain threshold and obviously reduce the acetic acid-induced mouse pain writhing reaction frequency, has obvious anti-inflammatory and analgesic effects, and can be applied to preparation of the anti-inflammatory and analgesic drugs.

The invention relates to the technical field of solar cells, in particular to a short-wave ultraviolet pre-crosslinking adhesive film and a preparation method thereof. Comprising the following raw materials in parts by weight: 90-110 parts of polymer resin, 0.2-2 parts of a short-wave ultraviolet light initiator, 0.2-2 parts of a thermal initiator, 0.5-5 parts of a crosslinking aid, 0.1-1 part of a coupling agent, 0.01-0.5 part of a light stabilizer, 0.01-0.5 part of an ultraviolet absorption aid, 0-0.5 part of an antioxidant and 10-20 parts of color master batch. According to the short-wave ultraviolet light pre-crosslinking adhesive film, the short-wave ultraviolet light initiator is added, so that the adhesive film is pre-crosslinked under the short-wave ultraviolet light condition, on one hand, the auxiliary agent fully initiates reaction under the short-wave ultraviolet light to reach a certain pre-crosslinking degree, and on the other hand, the light stabilizing auxiliary agent in the adhesive film cannot be attenuated; when the composite material is used in a solar cell, the photoelectric conversion rate and the packaging formability of a cell module can be improved, and the service life can be prolonged.