4results about How to "Improve charge stability" patented technology

The application provides a fast charging circuit of an energy storage device and a charging method and a charger thereof, wherein the charging circuit comprises a forward conversion module, the forward conversion module outputs a first stable current or a second stable current to the energy storage device through a transformer; an energy storage capacitor is electrically connected to an output power supply of the forward conversion module, and the energy storage capacitor is electrically connected to the energy storage device through a control switch; when the output of the charging circuit is switched from the first stable current to the second stable current, the control switch is closed, the energy storage capacitor charges the energy storage device, so as to accelerate the switching process from the first stable current to the second stable current; the energy storage capacitor is electrically connected to an output port of the transformer, the output port of the transformer is allowed to be switched, so as to maintain the voltage of the energy storage capacitor at a preset voltage. The application can generate continuous current and high-quality pulse current, and the charging efficiency is high.

The present invention provides an electrophotographic photoreceptor, a processing box and an image forming device. The photosensitive layer of the electrophotographic photoreceptor is a single layer and contains a charge generating agent, a hole transporting agent, a first electron transporting agent, a second electron transporting agent and a binding resin. The binding resin contains a polyarylate resin. The polyarylate resin has repeating units (1), (2), (3) and (4). Relative to the total number of repeating units (1) and (3), the content of repeating unit (3) is greater than 0% and less than 20%. The first electron transporting agent contains a compound represented by formula (A15) or (A16). The second electron transporting agent contains a compound represented by formula (B10), (B11), (B12), (B13) or (B14).

The present invention belongs to the technical field of battery pack charging, and discloses a charging bracket and a battery swap station. The charging bracket includes: a fixed seat; a support frame, which is arranged on the fixed seat, and the support frame is a frame structure for carrying a battery pack; a first positioning column, the first positioning column includes a supporting portion and a tip portion, the supporting portion is arranged on the support frame, and the tip portion is arranged on the top of the supporting portion, and a first positioning guide sleeve is respectively arranged at the bottom of the battery pack; the tip portion is configured to be inserted into the first positioning guide sleeve and slide with it, which is used for the rough positioning of the battery pack, and the supporting portion is configured to be inserted into the first positioning guide sleeve and slide with it, which is used for the fine alignment of the battery pack, and an electrical connection mechanism is arranged on the support frame, so that the battery pack is electrically connected to the electrical connection mechanism. The charging bracket adopts a combination of rough alignment and fine alignment to achieve a dual positioning effect of the battery pack, and has good charging stability.

The invention discloses an acrylic emulsion for an inorganic silicate coating as well as a preparation method and application of the acrylic emulsion, and belongs to the technical field of waterborne acrylic emulsions. The preparation raw materials of the acrylic emulsion for the inorganic silicate coating comprise the following components: unsaturated carboxylic acid, a functional monomer, a soft monomer, a hard monomer, a polymerizable emulsifier, an initiator, a functional additive and water. According to the acrylic emulsion, a polymerizable emulsifier is adopted, an emulsifier structural unit is bonded with an acrylic polymer through a covalent bond, the stability of the acrylic emulsion is improved, a functional monomer with a post-crosslinking effect is added, a micro-crosslinking structure is formed in emulsion particles, and the possibility of agglomeration of the emulsion particles is reduced. The inorganic silicate coating is good in thermal stability and can still effectively form a film after being subjected to high-temperature thermal storage for 2 months, the properties of a paint film of the coating can still meet various index requirements, and actual construction requirements are met.