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297results about How to "Increase the conductive area" patented technology

Gas metal arc welding method and system

The invention discloses a gas metal arc welding method and a gas metal arc welding system, and belongs to the field of gas metal arc welding control. Constant wire feed is adopted, the wire feed rate ranges from 1.5 to 18m / min, a welding source outputs pulse current, and the average value of the pulse current is preset according to the wire feed rate before welding and is kept unchanged in the welding process; the arc voltage Ug is given before welding, a feedback value Uf of the arc voltage is sampled in real time in the welding process, and delta I is equal to the absolute value of k(Uf-Ug), wherein delta I is regulation current, and k is a proportionality coefficient and ranges from 10 to 100; when the feedback value Uf of the arc voltage increases, delta I is subtracted from the peak value Ip of the pulse current, and the basic value current Ib is added to delta I to keep the arc voltage stable; and when the feedback value Uf of the arc voltage decreases, the adjusting process is reversed. By the high frequency pulse current, the average value and the effective value of the current are obviously different, so that on the premise that the heat input of a base metal the heating of a solder wire is not changed basically, the heating of a solder wire is changed, the melting rate of the solder wire is adjusted and the arc length is adjusted.
Owner:BEIJING UNIV OF TECH

Lithium ion battery core with continuous lamination and lithium ion battery

The invention relates to a lithium ion battery core with continuous lamination and a lithium ion battery, belonging to a storage battery and aiming at providing a lithium ion battery with sample structure and difficultly shed active substances, as well as low production cost. The lithium ion battery core with continuous lamination comprises a positive plate, a negative plate and a diaphragm, wherein the positive plate comprises a belted positive plate and a monolithic positive plate, the negative plate comprises a belted negative plate and a monolithic negative plate, the diaphragm comprises a positive side-belted diaphragm, a middle belted diaphragm and a negative side-belted diaphragm, the positive side-belted diaphragm, the belted positive plate, the middle belted diaphragm, the beltednegative plate and the negative side-belted diaphragm sequentially laminated and connected along a direction vertical to the surfaces thereof to form a main core body, the main core body is continuously bent into a Z shape along the length direction, the monolithic positive plate is inserted in adjacent bent parts of the positive side-belted diaphragm, the monolithic positive plate is inserted inthe adjacent bent parts of the negative side-belted diaphragm, and parts in which the positive plate and the negative plate are in contact with the diaphragm are coated with the active substances.
Owner:李文漫

Compression joint type power battery assembly structure, assembling method and electric vehicle

The invention discloses a compression joint type power battery assembly structure, an assembling method and an electric vehicle. The compression joint type power battery assembly structure comprises an upper part battery compartment, flexibly packaged electric cores and a protection cover arranged in a battery compartment; two tab-fixing copper plates are arranged on the opening side of the battery compartment; a positive electrode tab and a negative electrode tab of each flexibly packaged electric core are covered by the two tab-fixing copper plates respectively; tab perforating holes are formed in the position, corresponding to the tabs, in the tab-fixing copper plates; the tabs of the flexibly packaged electric cores penetrate through the tab perforating holes to be bent to form pressing parts clung to the upper surfaces of the tab-fixing copper plates; compressing copper plates for propping and pressing the pressing parts are arranged on the tab-fixing copper plates; the compressing copper plates are connected with the tab-fixing copper plates through threaded fastening parts; the compressing copper plates are further provided with connection member parts; and the compressing copper plates are covered by the protection cover. The compression joint type power battery assembly structure can avoid damage of the flexibly packaged electric cores and the environment pollution caused in the tin soldering process; and in addition, the assembly structure is suitable for industrial production and capable of ensuring reliable connection as well.
Owner:ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL

Optical module

The invention discloses an optical module. A circuit board is provided with a first heat dissipation piece, an optical chip is attached to one end of the first heat dissipation piece, the other end ofthe first heat dissipation piece extends out of a lens assembly, the lens assembly covers the optical chip, a third heat dissipation piece and a through hole are arranged in the circuit board, and the first heat dissipation piece and the third heat dissipation piece are in heat conduction connection through the through hole. A second heat dissipation piece is arranged at the other end of the first heat dissipation piece and provided with a heat conduction piece, and the heat conduction piece is in heat conduction connection with an upper shell. The first heat dissipation piece conducts heat generated by the optical chip to the third heat dissipation piece, the third heat dissipation piece diffuses the heat and then conducts the heat to the first heat dissipation piece through the throughhole, and the first heat dissipation piece conducts the total heat to the second heat dissipation piece, and then the total heat is conducted to the upper shell through the heat conduction piece. Visibly, according to the optical module provided by the invention, the heat generated by the optical chip is diffused out of the coverage area of the lens assembly by utilizing the first heat dissipationpiece and the third heat dissipation piece, and then heat dissipation is realized by the second heat dissipation piece, the heat conduction piece and the upper shell, so that the heat dissipation effect is better.
Owner:HISENSE BROADBAND MULTIMEDIA TECH

Embossed flattened rigidity-reinforced electrolytic electrode plate and preparation method thereof

The invention relates to an embossed flattened rigidity-reinforced electrolytic electrode plate and a preparation method thereof, the electrolytic electrode plate comprises an electrode plate, an embossed groove is arranged on the surface of the electrode plate, and forms a concave convex pattern to improve the electrode plate surface strength and bending resistant ability. The embossed groove is composed of a plurality of transverse embossed grooves and oblique embossed grooves to form a structure shaped like a Chinese character mi, and raised structure composed of an upper triangular convex block and a lower triangular convex block is formed on the electrode plate. The beneficial effects of the embossed flattened rigidity-reinforced electrolytic electrode plate are that: aiming at the electrode plates of different types, reinforced stripes with different specifications and different shapes are designed, through embossing and shaping of the reinforced stripes, the electrode plate rigidity is greatly enhanced, the internal stress is eliminated, the objective of improving the electrode plate surface flatness, reducing the bending deformation, and enhancing the electrode plate bending resistant ability can be achieved, anode and cathode short circuit phenomenon in the process of electrolysis due to deformation can be avoided, the power consumption in the electrolysis or plating process can be effectively reduced, at the same time, cathode product quality is improved, the labor intensity is reduced, and production efficiency is improved.
Owner:HANGZHOU EMPEROR LOSSEN TECH

Electric connector

The invention discloses an electric connector comprising an insulating body and multiple terminals. Each of the multiple terminals is provided with a first metal layer and a second metal layer which is arranged on the bottom side of the first metal layer, and the first metal layer is provided with a first electric contact, the second metal layer is provided with a second electric contact and the first electric contact and the second electric contact are arranged in a way of being suitable for simultaneously contacting the corresponding matching terminals. According to the electric connector, each terminal is provided with two metal layers which are vertically laminated so that the conductive area of the whole terminal can be increased, the resistance of the whole terminal can be reduced, the current transmission capacity of the terminal can be enhanced and thus high current can be transmitted. Besides, the two metal layers of each terminal are provided with the electric contacts contacted with the matching terminals of an external circuit so that the two metal layers of each terminal can be electrically contacted with the matching terminals simultaneously, the contact impedance of the terminals can be reduced and the electric contact reliability of the terminals can be enhanced.
Owner:TYCO ELECTRONICS (SHANGHAI) CO LTD
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