A bracket presenter for an ultrasonic welder includes a one-piece first bracket portion and a one-piece second bracket portion mounted relative to one another. First and second tapered features are respectively provided by the first and second bracket portions and are nested relative to one another. The first and second tapered features engage in an extended position and are spaced from one another in a compressed position to provide a clearance enabling the first and second bracket portions to float lateral relative to one another. A spring biases the first and second bracket portions apart.

A welding method for a new flexible and rollable silicon-based solar module includes the following steps: cutting a cell piece into a small piece cell string including N small piece cells without splitting; cutting a hard protective layer into N small pieces according to a size of a small piece cell; allowing the cut hard protective layer to be covered on and bonded to a glue-dispensed small piece cell string to form a small string cell piece; arranging the small string cell pieces into a small standard piece according to a required size distribution, and covering the small standard piece with an adhesive film; welding positive electrodes and negative electrodes of the small standard pieces in series simultaneously to form a 1P standard part; and arranging the 1P standard parts, and fixing the 1P standard parts by bonding the adhesive films to each other to form a 5P standard part.

The present disclosure relates to a separator plate for an electrochemical system, wherein the separator plate has, at least in some regions, periodic surface structures with a mean spatial period of less than 10 ?m. The disclosure additionally relates to a method for producing a separator plate for an electrochemical system, comprising the steps: providing a separator plate; irradiating the separator plate by means of a pulsed laser, wherein a pulse duration of the laser pulses is less than 1 ns; and creating periodic surface structures on the separator plate by way of the laser radiation.

A sealing method that uses an electrostatic energy storage welding machine which includes an energy storage section including a plurality of energy storage parts is provided. A method of sealing a liquid inlet port of a power storage device includes burring in advance a through-hole of the liquid sealing port to raise a hole edge of the through-hole into a form of a projection, wherein the liquid sealing port of the power storage device to be sealed with electrolyte contained therein corresponds to an object to be welded; placing a spherical body that is a lid body on the projection; and performing resistance welding between the projection and the spherical body to seal the liquid inlet port.

Method and devices using lasers to reduce reflection of transparent solids in the optical spectrum, coatings and devices employing transparent solids are disclosed. The lasers are used to shape surfaces of the transparent solid materials by raising the temperature of the material to around the melting temperature, and thereby generate desired target nanostructure two-dimensional antireflection flection pattern arrays on the surfaces. The laser fluence value, wavelength, repetition rate, pulse duration and number of consecutive laser pulses per focus spot are selected, and a desired focus spot distribution on the surface of the transparent solid material is identified. The transparent solid material is relatively translated to generate the desired nanostructure two-dimensional pattern array.

The invention discloses an arrangement for mechanically and electrically contacting a glow wire of a thermal radiation source, comprising a glow wire made of refractory metal having at least one flat connection surface to be contacted, a contact surface on which the glow wire is contacted, and a contacting means which connects the glow wire to the contact surface. The invention also relates to a method for producing the contact according to the invention. The problem addressed by the invention, of providing a reliable and enduringly stable mechanical and electrical contact of glow wires made of refractory metals, is solved in that the flat connection surface has at least two perforations and/or at a circumferential edge of the connection surface of the glow wire at least two recesses are formed, wherein the contacting means is integrally connected to the contact surface at the location of the perforations and/or recesses and forms both an electrical and a mechanical connection to the glow wire at the location of the perforations and/or recesses by means of a flange-like design of the contacting means above the connection surface of the glow wire.

A method of processing a thin film structure comprising: providing a thin film structure comprising a stack of two or more thin film layers supported on a surface of a substrate, the stack having a depth orthogonal to the substrate surface; and forming a cut through the depth of the stack by using a direct write laser technique to scan a laser beam along a scan path covering an area of a desired cut line on a surface of the stack to ablate material of the stack along the cut line and through the depth of the stack at least to the surface of the substrate; wherein the direct write laser technique is implemented using an ultrashort pulsed laser outputting pulses with a duration of 1000 femtoseconds or less, at a wavelength in the range of 100 to 1500 nm, and delivering a fluence in the range of 50 to 100,000 mJ/cm2.

Embodiments are directed to laser-based processes for forming features on the surface of a part. The feature may include a geometric element, a color element, and/or a surface finish element. In some cases, the laser-formed features are formed as a pattern of textured features that produce an aesthetic and/or tactile effect on the surface of the part. In some cases, the texture features may be sufficiently small that they may not be discerned by the unaided human eye. Also, in some cases, a multiple laser-based processes are combined to form a single feature or a finished part having a specific aesthetic and/or tactile effect.

A method of joining at least two substrates includes welding the at least two substrates together with a multi-step welding process. The multi-step welding process includes: reducing a mismatch between the at least two substrates by melting on both sides of the at least two substrates to form a melted portion that does not overlap a joint line between the at least two substrates with a first welding step; and increasing melt volume and penetration depth of the melted portion between the at least two substrates with a second welding step.

A method for manufacturing a battery cell having electrode foils protruding from a cell pouch includes positioning the cell pouch in a fixture such that distal end sections of the foils extend outward from the fixture. The method includes clamping the distal end sections in a curvilinear guide clamp to cause the distal end sections to taper into an electrode foil stack, and then translating the clamp a predetermined distance toward the fixture to displace the distal end sections by the predetermined distance. The method also includes trimming the distal end sections using a trim tool, positioning a sonotrode and an anvil adjacent opposite surfaces of the stack, and ultrasonically welding the stack to a conductive lead tab using the sonotrode to thereby form a welded joint within the battery cell. The sonotrode may be multi-sided with different knurl patterns for performing different welding processes.