5238results about How to "Easy to weld" patented technology

A method for fabricating a solar cell (1) comprising a semiconductor substrate (2) is proposed where electrical contacting is made on the back side of the semiconductor substrate. The back side of the semiconductor substrate has locally doped regions (3). The adjacent regions (4) exhibit different doping from the region (3). The two regions (3, 4) are initially coated with electrically conductive material (5) over the entire area. So that the conductive material (5) does not short-circuit the solar cell, the two regions (3, 4) are covered with a thin electrically insulating layer (7) at least at the region boundaries (6). The electrically conductive layer (5) is separated by applying an etch barrier layer (8) over the entire surface which is then removed free from masking and selectively e.g. by laser ablation, locally above the insulating layer (7). The conductive layer is locally removed in the area of the openings (9) of the etch barrier layer (8) by subsequent action of an etching solution.

A stator includes a bracket having a shaft bearing portion at a center, a stator base including a flexible printed wiring board outwardly attached to the shaft bearing portion, single-phase air-armature coils disposed on the stator base, and a drive circuit member disposed on the stator base so as not to overlap with the single-phase air-core armature coils. The bracket has a through hole at the section corresponding to the bottom of the drive circuit member. The stator base is embedded at least partly in the thickness direction in the through hole and fixed using a resin, and a detent torque generation member is contained in, and is no thicker than, the stator base.

The invention provides a battery, comprising a cover plate, a shell, a battery cell and electrolyte. The battery cell and the electrolyte are sealed in the shell of the battery, and the cover plate is hermetically connected with the shell. The battery cell comprises a positive polar plate, a negative polar plate and a diaphragm arranged between the positive polar plate and the negative polar plate. A positive polar lug is arranged on the positive polar plate, and a negative polar lug is arranged on the negative polar plate. The battery cell is further internally provided with a positive polar current and heat conducting member and a negative polar current and heat conducting member, and the positive polar current and heat conducting member and the negative polar current and heat conducting member are mutually insulated. The positive polar current and heat conducting member and the positive polar lug are conducted; the negative polar current and heat conducting member and the negative polar lug are conducted; the positive polar current and heat conducting member and / or the negative polar current and heat conducting member penetrate(s) through the cover plate to leading out current. According to the invention, the internal heat of the battery cell can be reduced rapidly, substances on the polar plates can be prevented from further thermal reaction, and thus, the safety performance of the battery is increased. Meanwhile, the stability of the internal temperature of the battery cell is guaranteed, the cyclic performance and the like of the battery are improved. In addition, the temperature at all parts in the battery cell can be ensured to be consistent so as to eliminate temperature differences and make the reaction temperature of all parts of the polar plates consistent. Meanwhile, the current and heat conducting members can play roles of backbone and support to support the battery cell, and is beneficial to not only assembly but also winding of the battery cell.

An electronic personal vaporizer is provided, having components including a heating element; a liquid container; a power source to provide power to the heating element; a first bulkhead defining an airway at a first end of the vaporizer;a second bulkhead separating the power source from the heating element and liquid container; and a shell containing the heating element, liquid container and power source. The shell is made of flexible printed circuit and is rolled or folded around the other components to allow for electronic communications to pass along the vaporizer without piercing the bulkheads.

The present invention generally relates to methods of connecting two expandable tubulars. In one aspect, the method includes flash welding the ends of the expandable tubulars together. Thereafter, the connected tubulars are lowered into the wellbore for expansion. The flash welding process provides a highly reliable joint for expansion.

A system for laying a pipeline from a floating vessel onto the ocean floor in relatively deep ocean water which provides an erector for raising new pipe sections to be added to a pipeline which is depending from the system, the pipe sections being raised into accurate alignment with the mast of the system although the mast is free to be gimbaled in any direction within two degrees of angular freedom.

The present invention generally relates to methods of connecting two expandable tubulars. In one aspect, the method includes flash welding the ends of the expandable tubulars together. Thereafter, the connected tubulars are lowered into the wellbore for expansion. The flash welding process provides a highly reliable joint for expansion. In another aspect, the present invention provides a method for expanding a non-uniform tubular. In one embodiment, the non-uniform tubular is formed by connecting two misaligned tubulars.

In a power supply for creating a voltage to cause a current pulse between a consumable electrode and a workpiece to melt the end of the electrode into a droplet and propel the droplet toward the workpiece, where the power supply has a plurality of pulse controlling parameters, the improvement comprising: means for determining the real time dv / dt of the voltage during the current pulse; means for creating a detect signal in response to the real time dv / dt shifting from a negative value to a positive value; and means for adjusting at least one of the welding parameters in response to the detect signal.

The invention relates to a method for controlling and / or adjusting a welding process, using a melting electrode, wherein after ignition of an electric arc, a welding process, which is adjusted on the basis of several different welding parameters, is carried out by means a welding current source (2), said process being controlled or adjusted by a control device (4). The invention also relates to a corresponding welding device used to carry out the process. In order to create said method, wherein the thermal heat economy is adjusted and / or regulated and / or controlled in order to introduce heat into the workpiece (16), at least two different process phases are cyclically combined, said process phases having different inputs of energy via different material transitions and / or arc types, such as a pulse current phase (27) and a cold metal transfer phase (28) in order to influence or control thermal heat economy, particularly the introduction of heat into the workpiece to be processed.

A working end of a surgical instrument that carries first and second jaws for delivering energy to tissue. In a preferred embodiment, at least one jaw of the working end defines a tissue-engagement plane that contacts the targeted tissue. The cross-section of the engagement plane reveals that it defines a surface conductive portion that overlies a variably resistive matrix of a temperature-sensitive resistive material or a pressure-sensitive resistive material. An interior of the jaw carries a conductive material or electrode that is coupled to an Rf source and controller. In an exemplary embodiment, the variably resistive matrix can comprise a positive temperature coefficient (PTC) material, such as a ceramic, that is engineered to exhibit a dramatically increasing resistance (i.e., several orders of magnitude) above a specific temperature of the material.

A conformable paste comprising porous agglomerates of carbon black dispersed in a paste-forming vehicle is disclosed. The paste is useful as an interface material for improving the thermal contact between two proximate solid surfaces, such as the surfaces of a heat source and a heat sink. Upon compression between the two solid surfaces, the paste forms a material that enhances the thermal contact between said surfaces. This invention also discloses a conformable interface material which, upon compression between two proximate solid surfaces, forms a material that enhances the thermal contact between said surfaces. This interface material comprises (i) a sheet and (ii) a conformable, spreadable and thermally conductive paste on each of the two opposite sides of the sheet, said paste comprising porous agglomerates of carbon black dispersed in a paste-forming vehicle. In addition, a method of providing a thermal contact between two solid surfaces is disclosed. This method comprises disposing between and in contact with said surfaces a material comprising: a conformable, spreadable and thermally conductive paste comprising porous agglomerates of carbon black dispersed in a paste-forming vehicle, and applying a pressure to cause said material to conform to the topography of said surfaces.

An electrolyte injecting metallic plug laser-welded to an outer edge of an electrolyte injecting port on a periphery of a battery case. At least a part of the electrolyte injecting metallic plug is inserted into the electrolyte injecting port.