Abstract: A preparation method for an electrode sheet, an electrode sheet, a battery, and an electric device. The preparation method for an electrode sheet includes: preparing an active layer comprising an active material and a binder on at least one side of a current collector; performing a heating treatment on the active layer to cause a temperature of a surface layer of the active layer to rise to a heating temperature; and performing a thermal insulation treatment on the active layer to cause the surface layer of the active layer to be at a thermal insulation temperature, where each of the heating temperature and the thermal insulation temperature is separately higher than or equal to a melting point or a softening point of the binder and lower than a decomposition temperature of the binder.

Abstract: Disclosed are a negative electrode plate and a processing method therefor, a battery, and an electrical apparatus. The processing method for a negative electrode plate includes: performing combusting treatment on a specified part of the negative electrode plate, where the specified part at least includes an edge of the negative electrode plate, and the combusting treatment includes combusting a fuel gas and heating the specified part using generated flames. In the processing method for a negative electrode plate, the edge of the negative electrode plate is subjected to combusting treatment to ablate burrs by the flames, which facilitates ameliorating the burr problem of the negative electrode plate at the edge.

Abstract: A positive electrode plate and a treatment method thereof, a battery, and an electric device are provided. The treatment method of the positive electrode plate includes: performing combustion treatment on a designated portion of the positive electrode plate, where the designated portion includes at least part of a surface of a positive electrode active material layer of the positive electrode plate. In the treatment method of the positive electrode plate, performing combustion treatment on the surface of the positive electrode plate enables flame to ablate and reduce a floating binder, helping to alleviate blockage of pores by the floating binder, thereby effectively improving electrolyte infiltration of the positive electrode plate.

Abstract: An electrode sheet processing system and a method for processing an electrode sheet. The electrode sheet processing system includes: an electromagnetic induction heating unit, where the electromagnetic induction heating unit is configured to perform electromagnetic induction heating treatment on an electrode sheet. The method comprises performing electromagnetic induction heating treatment on the electrode sheet to make sure that a surface temperature of an active layer of the electrode sheet is greater than or equal to a softening temperature or a melting temperature of a binder of the electrode sheet and that a temperature of a current collector of the electrode sheet is less than a deformation temperature of the current collector.

Abstract: An electrode plate processing system, a method for processing an electrode plate, an electrode plate, a battery, and an electric apparatus. The electrode plate processing system includes a flame heating unit, where the flame heating unit is configured to perform flame heating treatment on an electrode plate. The method for processing an electrode plate includes: performing flame heating treatment on an electrode plate, such that a surface layer temperature of an active layer is greater than or equal to a softening temperature or a melting temperature of a binder and less than the lowest temperature of a decomposition temperature, an oxidation temperature, and an ignition temperature of an active material.

Abstract: A method for preparing a positive electrode slurry includes four sequential stirring steps. A positive electrode active material and a conductive agent are first stirred to form a dry mixture. A binder and a solvent are then stirred to form a glue solution. The dry mixture and glue solution are subsequently stirred to form a primary slurry. Finally, the binder, the solvent, and the primary slurry are stirred to obtain the positive electrode slurry. The binder and solvent used in the second and fourth stirrings are the same. Based on the total mass of binder used in both steps, 50% to 70% is added during the second stirring, and 30% to 50% during the fourth stirring. The application also relates to a positive electrode slurry prepared by this method, a secondary battery including the slurry, a battery pack, and an electrical apparatus comprising the battery.

Abstract: A method for preparing a positive electrode slurry is disclosed, along with a secondary battery, a battery pack, and an electrical apparatus. The method includes three stirring steps. In a first stirring step, a binder and a solvent are stirred to form a glue solution. In a second stirring step, a positive electrode active material and a conductive agent are added to the glue solution and stirred to form a mixture. In a third stirring step, additional binder and solvent are stirred with the mixture to obtain the positive electrode slurry. The binder and solvent used in the first and third stirring steps are of the same types. Based on the total mass of binder, 50-70% is added during the first stirring and 30-50% during the third. Similarly, 50-70% of the solvent is added in the first stirring and 30-50% in the third.

Abstract: A preparation method of a positive electrode slurry includes a first stirring, a second stirring, a third stirring and a fourth stirring. In the first stirring, a positive electrode active material and a binder are mixed and stirred to prepare a dry mixture. In the second stirring, a binder and a solvent are mixed and stirred to prepare an adhesive solution. In the third stirring, the dry mixture and the adhesive solution are mixed and stirred to prepare a primary slurry. In the fourth stirring, a positive electrode active material, a conductive agent, a solvent and the primary slurry are mixed and stirred to prepare a positive electrode slurry. The binder used in the first stirring is the same as the binder used in the second stirring.

Abstract: A preparation method of a positive electrode slurry includes a first stirring, a second stirring, a third stirring and a fourth stirring. In the first stirring, a positive electrode active material, a conductive agent and a first binder are mixed and stirred to prepare a dry mixture. In the second stirring, a second binder and a solvent are mixed and stirred to prepare an adhesive solution. In the third stirring, the dry mixture and the adhesive solution are mixed and stirred to prepare a primary slurry. In the fourth stirring, a solvent and the primary slurry are mixed and stirred to prepare a positive electrode slurry. The weight average molecular weight of a polymer in the second binder is smaller than the weight average molecular weight of any polymer in the first binder.

Abstract: A method of providing object detection warning to an operator of a machine is provided. The machine includes object detection modules, a display unit and a controller communicably coupled to the object detection modules and the display unit. The method detects at least one object being located within a predefined distance range from the machine and determines a distance and position of the detected at least one object relative to the machine. The method further displays a threat warning widget on the display unit. The widget includes a plurality of threat level indicators, each of the threat level indicators being representative of a warning level as a function of distance and position of the object relative to the machine. Furthermore, the method activates at least one threat level indicator based on the determined distance and position of the detected at least one object relative to the machine.

Abstract: A method of providing object detection warning to an operator of a machine is provided. The machine includes object detection modules, a display unit and a controller communicably coupled to the object detection modules and the display unit. The method detects at least one object being located within a predefined distance range from the machine and determines a distance and position of the detected at least one object relative to the machine. The method further displays a threat warning widget on the display unit. The widget includes a plurality of threat level indicators, each of the threat level indicators being representative of a warning level as a function of distance and position of the object relative to the machine. Furthermore, the method activates at least one threat level indicator based on the determined distance and position of the detected at least one object relative to the machine.

Abstract: A shock absorber includes a push rod, a first piston, a cylinder, a piston rod, a second piston, and a third piston. The cylinder and the first piston cooperatively define a first oil cavity. The second piston, the first piston, and the cylinder cooperatively define a second oil cavity. The third piston and the cylinder cooperatively define a gas cavity. The first piston is configured to urge the hydraulic oil of the second oil cavity to flow into the first oil cavity and the third oil cavity in event the push rod is pushed. The third piston is configured to compress the gas in the gas cavity in event the third piston is urged toward the gas cavity, thereby creating a damping effect.

Abstract: A shock absorber includes a push rod, a first piston, a cylinder, a piston rod, a second piston, and a third piston. The cylinder and the first piston cooperatively define a first oil cavity. The second piston, the first piston, and the cylinder cooperatively define a second oil cavity. The third piston and the cylinder cooperatively define a gas cavity. The first piston is configured to urge the hydraulic oil of the second oil cavity to flow into the first oil cavity and the third oil cavity in event the push rod is pushed. The third piston is configured to compress the gas in the gas cavity in event the third piston is urged toward the gas cavity, thereby creating a damping effect.