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36results about How to "Good welding reliability" patented technology

Preparation method for stannum, indium and stibium series lead-free solder tinning copper strip used for solar battery

The invention relates to a preparation method for a stannum, indium and stibium series lead-free solder tinning copper strip used for a solar battery. The preparation method comprises the following steps: pure stannum, indium and stibium, as well as bismuth, copper and silver are weighted according to the mass ratio of (83-99):(0.5-9):(0.1-8):(0-4):(0-1):(0-1); firstly, stibium, copper and silver are melted along with stannum in a smelting furnace in the proportion of 1:10 and then stirred to enable the stibium, copper and silver to be completely melted in stannum, and a stannum, stibium, silver and copper intermediate alloy is formed; secondly, the residual stannum and the other components are melted to form corresponding intermediate alloys; then two intermediate alloys are melted and stirred to be evenly mixed; and finally, the traditional hot dip-soldering process is used, and lead-free solder is dip-soldered on a copper wire or a copper strip. The Sn-In-Sb series lead-free solder has very low silver content, the solder cost is greatly lowered, the copper strip has better ductility and tensile strength, and the connection interface has high reliability. The high-performance solder alloy is taken as the object of study and is enabled to meet the industrial application requirements, so that the development prospect is good.
Owner:TIANJIN UNIV

Surface-mounted fuser

The invention discloses a surface-mounted fuser, comprising a fusing chip. The fusing chip mainly consists of termination electrodes, a ceramic substrate, a fuse element layer and an arc extinguishing glass layer, wherein the fuse element layer is located on the upper surface of the ceramic substrate; the two termination electrodes are respectively located at the both sides of the fuse element layer and are electrically connected with the fuse element layer; and the arc extinguishing glass layer covers the fuse element layer and the area, which is close to the fuse element layer, of the termination electrodes. The surface-mounted fuser further comprises a fusing main body the middle of which is provided with a round through hole, wherein the fusing chip is located in the round through hole of the fusing main body; two metal covers are respectively located at the both ends of the fusing main body and cover the round through hole so as to form a sealing cavity; and the termination electrodes are electrically connected with the metal covers through welding sheets. The surface-mounted fuser provided by the invention has high temperature resistance and high strength, can coat fusing wires and arc extinguishing glass inside well so as to greatly improve the entire strength, the breaking capability and the thermal shock resistance of the fuser, and is convenient for large-scale production.
Owner:SEMITEL ELECTRONICS

High-reliability PERC back silver conductive paste for crystalline silicon solar cell and preparation process for high-reliability PERC back silver conductive paste

The invention discloses high-reliability PERC back silver conductive paste for a crystalline silicon solar cell and a preparation process for the high-reliability PERC back silver conductive paste. The viscosity of the slurry is 20 to 80 Pa.S, and the paste contains the following components in percentage by mass: 0.1%-0.3% of an inorganic additive, 1%-5% of glass powder, 45%-65% of silver powder,2%-6% of ethyl cellulose, 1%-5% of terpilenol, 20%-35% of texanol ester alcohol and a proper amount of an organic additive, wherein the glass powder is formed by the mixing of glass powder I and glasspowder II. The preparation method comprises the following steps: uniformly mixing the organic additive, ethyl cellulose, terpilenol and texanol ester alcohol under the water bath condition to obtaina carrier; adding the mixed glass system and the inorganic additive into the carrier, and uniformly mixing the mixture; and adding the silver powder system into the system at the step 2, and performing uniform mixing, rolling and filtering to obtain the back conductive silver paste. According to the invention, the PERC back silver paste guarantees the characteristics of the traditional non-contactsilver paste, is fewer in damages to an aluminum oxide passivation layer, is high in welding reliability of a back silver paste sintered electrode due to the fact that a mixed glass system is adopted, and has excellent comprehensive performances under the condition that the actual temperature is 740 DEG C-780 DEG C.
Owner:ZHEJIANG GUANGDA ELECTRONICS TECH

Reinforcement frame for a display panel using extruded aluminum alloy and apparatus and method for manufacturing the same

The present invention discloses a reinforcement frame for a display panel using aluminum alloy extrusion members and an apparatus and a method for manufacturing the same, wherein, while a number of unitary aluminum alloy extrusion members abut one another, a welding head is used to cause the abutting portions to undergo friction resulting from high-speed rotation so that the members are melted and welded to one another by the resulting frictional heat.
Owner:ALUKO株式会社

Cylindrical lithium battery assembly tool

The present invention relates to a cylindrical lithium battery assembly tool. The cylindrical lithium battery assembly tool includes a lithium battery assembly module and two lithium battery connection modules. The two lithium battery connection modules are symmetrically installed at two ends of the lithium battery assembly module by using assembly screws, and each lithium battery connection module and the assembly screw are connected in a laser welding manner. The laser welding manner has high welding quality, and lowers a probability of faults such as short circuit and poor contact that occur after long time use of corresponding lithium battery. The lithium battery assembly module adopts a modular decentralized installation design, so that the lithium batteries can be installed rapidly no matter how many lithium batteries are assembled, and the lithium batteries are simple to assemble and disassemble; and a gap between any two adjacent lithium batteries is large, so that the heat dissipation effect is good. The lithium battery connection modules can be customized and processed according to a quantity of the lithium batteries that are assembled in a modular decentralized manner in the lithium battery assembly module, the lithium batteries can be connected once, and two lithium batteries do not need to be connected separately. Through adoption of the cylindrical lithium battery assembly tool, a modular disassembling function of a lithium battery pack can be realized.
Owner:ZHEJIANG JINKAILAI NEW ENERGY TECH

Sampling and counting mechanism for diaphragm gas meter

ActiveCN104296820AReduce intermediate linksSave the process of applying protective glueVolume meteringMagnetic disturbanceGas meter
The invention provides a sampling and counting mechanism for a diaphragm gas meter and relates to the technical field gas meters. The sampling and counting mechanism for the diaphragm gas meter comprises a gas meter upper shell, a number wheel assembly and a control circuit board. Number wheels of the number wheel assembly are provided with multiple pieces of magnetic steel. The control circuit board is provided with a sampling sensor I and a sampling sensor II. The sampling sensor I and the sampling sensor II are close to each other and are located in the diameter direction of the number wheels. According to the sampling and counting mechanism for the diaphragm gas meter, the technical problems that in the prior art, the magnetic disturbance resistance capacity of a sampling and counting device of a gas meter is weak and potential mis-counting dangers exist are solved. The sampling and counting mechanism for the diaphragm gas meter has the advantages that counting signals are collected through the control circuit board directly, an intermediate link is omitted, potential dangers influencing the sampling and counting accuracy are eliminated, the process is simple, production cost is lowered, and production efficiency is improved; the effects for resisting shaking and resisting attacks from external magnetic fields are good, and the accuracy of sampling and counting is guaranteed.
Owner:GOLDCARD HIGH TECH

Welding assembly and welding method of battery adapter pieces

The invention discloses a welding assembly and a welding method of battery adapter pieces. The welding assembly comprises a laser device; a workpiece clamp used for installing a workpiece, wherein the workpiece clamp comprises a base, a workpiece installing part arranged on the base and a welding clamping block arranged on the workpiece installing part, the workpiece installing part is provided with a workpiece installing position for fixing the workpiece and welding piece containing grooves for containing welding pieces, the welding clamping block is provided with a light-transmitting groove allowing laser to penetrate and a clamping part capable of being assembled with the welding piece containing grooves, and the welding pieces are tightly pressed on the surface of the workpiece through the clamping part; and a rotating seat, wherein the workpiece clamp is arranged on the rotating seat, and the rotating seat can drive the workpiece clamp to rotate around the axis of the workpiece. According to the welding assembly, continuous light emitting and rotary welding modes are adopted, and the problems of low welding reliability and a low yield caused by difficult accurate focusing of laser focal length and low welding strength when the adapter pieces are welded in a spot welding mode in the past are solved.
Owner:ZHUHAI COSMX BATTERY CO LTD

A silver conductive paste on the back of a high-reliability perc crystalline silicon solar cell and its preparation process

The invention discloses high-reliability PERC back silver conductive paste for a crystalline silicon solar cell and a preparation process for the high-reliability PERC back silver conductive paste. The viscosity of the slurry is 20 to 80 Pa.S, and the paste contains the following components in percentage by mass: 0.1%-0.3% of an inorganic additive, 1%-5% of glass powder, 45%-65% of silver powder,2%-6% of ethyl cellulose, 1%-5% of terpilenol, 20%-35% of texanol ester alcohol and a proper amount of an organic additive, wherein the glass powder is formed by the mixing of glass powder I and glasspowder II. The preparation method comprises the following steps: uniformly mixing the organic additive, ethyl cellulose, terpilenol and texanol ester alcohol under the water bath condition to obtaina carrier; adding the mixed glass system and the inorganic additive into the carrier, and uniformly mixing the mixture; and adding the silver powder system into the system at the step 2, and performing uniform mixing, rolling and filtering to obtain the back conductive silver paste. According to the invention, the PERC back silver paste guarantees the characteristics of the traditional non-contactsilver paste, is fewer in damages to an aluminum oxide passivation layer, is high in welding reliability of a back silver paste sintered electrode due to the fact that a mixed glass system is adopted, and has excellent comprehensive performances under the condition that the actual temperature is 740 DEG C-780 DEG C.
Owner:ZHEJIANG GUANGDA ELECTRONICS TECH

Membrane gas meter sampling and counting mechanism

ActiveCN104296820BReduce intermediate linksSave the process of applying protective glueVolume meteringEngineeringControl circuit
The invention provides a membrane gas meter sampling and counting mechanism, which relates to the technical field of gas meters. It includes the upper casing of the gas meter, the character wheel assembly and the control circuit board. The number wheel of the character wheel assembly is provided with several magnets, and the control circuit board is provided with sampling sensor Ⅰ and sampling sensor Ⅱ. The sampling sensor Ⅰ and sampling sensor Ⅱ are close to each other. , and is located in the diameter direction of the number wheel. The invention solves the technical problems of the gas meter sampling and counting device in the prior art, which have weak anti-magnetic interference capability and hidden dangers of miscounting. The beneficial effect of the present invention is that the counting signal is directly collected by the control circuit board, eliminating intermediate links, eliminating hidden dangers affecting the accuracy of sampling and counting, and saving raw materials. The magnetic sensing element and the control circuit board are directly welded, which is suitable for the SMT chip technology, and the welding reliability is good, the process is simple, the production cost is reduced, and the production efficiency is improved. The anti-shake and anti-external magnetic field attack effects are good, ensuring accurate sampling and counting.
Owner:GOLDCARD HIGH TECH

A method for realizing heterogeneous welding of titanium alloy and aluminum alloy

A method for realizing dissimilar welding of titanium alloy and aluminum alloy belongs to the field of solid-phase connection of dissimilar metals. In order to realize the heterogeneous welding of titanium alloy and aluminum alloy and avoid the generation of Ti / Al brittle phase in the welding zone, the invention uses tin as the welding transition metal, and obtains high-quality friction welding seam through friction stir welding, and realizes the realization of titanium alloy and aluminum alloy. Dissimilar welding of aluminum alloys. The invention uses Sn as the intermediate phase, and realizes the heterogeneous welding of the high melting point titanium alloy and the low melting point aluminum alloy through friction stir welding, which not only effectively prevents the formation of brittle phases such as Ti / Al during the welding process, but also prevents the welding temperature from being too high. The resulting large amount of burning loss of the aluminum alloy improves the strength of the welded joint, and at the same time makes the welded joint firm, effectively improving the quality and performance of the welded joint. It has the advantages of simplicity and convenience, high welding efficiency, excellent quality and performance of the obtained welded joint, and greatly reducing labor and processing costs.
Owner:UNIV OF SCI & TECH BEIJING

High-reliability solder paste printing screen

The invention provides a high-reliability solder paste printing screen which comprises a printing screen body, the printing screen body comprises a base plate and at least one boss, the boss is arranged on the base plate, a plurality of first printing through holes are formed in the base plate at intervals, a plurality of second printing through holes are formed in the boss at intervals, and the first printing through holes are communicated with the second printing through holes. The distance between any two adjacent second printing through holes is smaller than the distance between any two adjacent first printing through holes, the distance between any two adjacent second printing through holes is smaller than 0.2 mm and larger than 0.1 mm, the thickness of the base plate ranges from 0.1 mm to 0.15 mm, and the thickness of the boss is 20%-25% of the thickness of the base plate.
Owner:SHENZHEN BESTWORK SCI & TECH CO LTD
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