Abstract: This application relates to the field of photovoltaic technologies, and in particular, to a welding ribbon carrier, a welding ribbon carrier assembly, a welding device, and a welding method, including: a carrier body, where the carrier body is configured to wind a welding ribbon, the carrier body has a rotational degree of freedom, the carrier body is provided with at least one operating surface, the operating surface is configured as a planar structure, the welding ribbon is routed across the operating surface, the operating surface is provided with several adsorption holes, and the welding ribbon is adsorbed and fixed by applying negative pressure to the adsorption holes. This resolves the technical problem of a complex structure of the welding device in the existing technology, and achieves a technical effect of simplifying the structure of the welding device.

Abstract: A ribbon carrier assembly, a welding device, and a welding method for preprocessing between a battery sheet and a ribbon are disclosed. The carrier assembly includes a carrier seat; a carrier body, rotatably connected to the carrier seat; and a driving assembly, connected to the carrier body and configured to control the rotation of the carrier body. At least one operation surface is arranged on the carrier body and is arranged as a curved surface. Adsorption holes are arranged on the operation surface. The battery sheet is adsorbed and fixed to the operation surface by applying a negative pressure to the adsorption holes. Through tins, dry joints between the battery sheet and the ribbon can be reduced during welding of the ribbon and the battery sheet. The battery sheet is bent on the curved surface to avoid warping or cracking of the battery sheet caused by excessive heating.

Abstract: A method for chemical mechanical polishing of a SiC wafer based on a magnetorheological elastic metal contact corrosion polishing pad, including following steps of: attaching a magnetorheological elastic metal contact corrosion polishing pad to a polishing disk adding an electrolyte solution onto the magnetorheological elastic metal contact corrosion polishing pad; wherein the electrolyte solution is non-corrosive, the electrolyte solution is added between the SiC wafer and the magnetorheological elastic metal contact corrosion polishing pad; applying a polishing magnetic field to the magnetorheological elastic metal contact corrosion polishing pad to control the contact state of the abrasive and metal powders on the SiC wafer; to achieve a control over a chemical reaction intensity of the metal powders on a SiC wafer surface in the electrolyte solution, and to achieve a mechanical removal of materials from the SiC wafer surface via the abrasive.

Abstract: A holding mechanism of a slicer, a crystal bar conveying structure and a slicer are provided. The holding mechanism of a slicer includes a holding seat and at least two limiting members. The at least two limiting members are movably disposed on the holding seat. An outer surface of the holding seat is provided with an accommodating groove. When the at least two limiting members are in the avoiding state, at least a part of each of the at least two limiting members is accommodated in the accommodating groove, so as to give way to a crystal bar holder in a moving process of the crystal bar holder. When the at least two limiting members are in the limiting state, at least a part of each of the at least two limiting members protrudes out from the outer surface of the holding seat to abut against the crystal bar holder.

Abstract: A kinetic energy recovery system, a kinetic energy recovery method and a cutting device are provided. The kinetic energy recovery system includes a motor controller, an energy storage device and an energy management device. The energy management device is connected to the energy storage device and the motor controller respectively, and the energy management device is configured to feed back braking information of a motor to the motor controller based on energy storage parameters of the energy storage device. The motor controller is configured to control the motor to convert kinetic energy of a rotating member into electrical energy of the energy storage device based on the braking information when the rotating member is in a braking state, and further control the motor to convert the electrical energy of the energy storage device into the kinetic energy of the rotating member when the rotating member is in an operation state.

Abstract: Disclosed is a magnetorheological-elastomer (MRE) polishing pad suitable for chemical mechanical polishing (CMP) of a semiconductor wafer, which simultaneously realizes high-efficiency magnetic control polishing and high-efficiency Fenton reaction, forms an organosilicon-polyurethane matrix through an organosilicon-modified polyurethane prepolymer, and combines the characteristics of high flexibility and excellent comprehensive mechanical properties of organosilicon. CIP@Fe3O4 composite magnetic particles in the polishing pad can make the MRE polishing pad exhibit a high magnetorheological effect, and the produced ·OH can oxidize a surface of the semiconductor wafer to generate an oxide layer, reducing the material removal difficulty of abrasive materials and the polishing pad under the mechanical action.

Abstract: The present disclosure provides a crystal bar slicer, a crystal bar slicing system and a loading method thereof. The crystal bar slicer includes a frame body, a cutting shaft and a holding mechanism. The frame body is provided with a slicing chamber and a feeding channel. The slicing chamber is in front of the feeding channel. A sidewall of the slicing chamber is provided with a feeding port, and a rear end of the feeding channel is in communication with outside of the frame body. A front end of the feeding channel is in communication with the slicing chamber via the feeding port. The cutting shaft is disposed in the slicing chamber, and the holding mechanism is configured to drive the crystal holder to move relative to the cutting shaft. The crystal bar slicing system includes the crystal bar slicer, a mechanical hand and a stockpiling region. The loading method includes loading a material with the mechanical hand.

Abstract: A ribbon carrier assembly, a welding device, and a welding method for preprocessing between a battery sheet and a ribbon are disclosed. The carrier assembly includes a carrier seat; a carrier body, rotatably connected to the carrier seat; and a driving assembly, connected to the carrier body and configured to control the rotation of the carrier body. At least one operation surface is arranged on the carrier body and is arranged as a curved surface. Adsorption holes are arranged on the operation surface. The battery sheet is adsorbed and fixed to the operation surface by applying a negative pressure to the adsorption holes. Through tins, dry joints between the battery sheet and the ribbon can be reduced during welding of the ribbon and the battery sheet. The battery sheet is bent on the curved surface to avoid warping or cracking of the battery sheet caused by excessive heating.

Abstract: A kinetic energy recovery system, a kinetic energy recovery method and a cutting device are provided. The kinetic energy recovery system includes a motor controller, an energy storage device and an energy management device. The energy management device is connected to the energy storage device and the motor controller respectively, and the energy management device is configured to feed back braking information of a motor to the motor controller based on energy storage parameters of the energy storage device. The motor controller is configured to control the motor to convert kinetic energy of a rotating member into electrical energy of the energy storage device based on the braking information when the rotating member is in a braking state, and further control the motor to convert the electrical energy of the energy storage device into the kinetic energy of the rotating member when the rotating member is in an operation state.