3results about How to "Reminder to replace" patented technology

The present application relates to heat transfer printing machine technical field, especially to a kind of sealed heating roller and its manufacturing method, including roller, at least one circular is provided in roller, at most four vacuum inner cylinders of cross section are sector, vacuum inner cylinder is evenly distributed along the circumferential direction, at least four groups of heating pipes are installed in roller, heating pipe is installed at the gap between vacuum inner cylinder and vacuum inner cylinder.This application roller is sealed as a whole, uses heating pipe to heat the heat conducting oil in the interior, avoids contact with air, prevents carbon deposition, coking from happening;The design of four vacuum inner cylinders reduces the amount of heat conducting oil, saves cost, at the same time because the amount of heat conducting oil is less, it has the advantages of fast heating and low energy consumption, so that only four heating pipes can meet the heating demand, so that the number of electric heating pipe is less, cost is further reduced, and the probability of roller oil penetration is also reduced;The design of four vacuum inner cylinders can also reduce the sealed roller.

The application provides a filter screen life detection method and device, a medium and an air purification equipment. The method comprises the following steps: acquiring a first dust concentration, a first formaldehyde concentration, a first temperature and a first humidity of an air inlet, and a second dust concentration, a second formaldehyde concentration, a second temperature and a second humidity of an air outlet; calculating a dust purification efficiency of the filter screen by using the first dust concentration and the second dust concentration, and calculating a formaldehyde purification efficiency of the filter screen by using the first formaldehyde concentration and the second formaldehyde concentration; determining a life detection result of the filter screen based on the dust purification efficiency, the formaldehyde purification efficiency, a temperature change amount of the first temperature and the second temperature, and a humidity change amount of the first humidity and the second humidity. The dust concentration, the formaldehyde concentration, the temperature and the humidity of the air inlet and the air outlet are detected, so that the filter screen state can be accurately reflected, the accuracy of detection can be ensured, the user can be accurately and effectively reminded to replace the filter screen, and the user experience is improved.

The invention relates to the technical field of battery management, in particular to a battery maintenance decision-making method and device, a vehicle and a storage medium, and the method comprises the steps: obtaining historical operation data of a fault battery, carrying out the data preprocessing, carrying out the feature extraction of the historical operation data after the data preprocessing, and obtaining a feature extraction result; the method comprises the steps of obtaining maintenance decision feature parameters of a faulty battery, determining a fault type of the faulty battery according to the maintenance decision feature parameters, determining a maintenance strategy of the faulty battery according to the fault type, and maintaining the faulty battery according to the maintenance strategy of the faulty battery. Therefore, the problems of excessive maintenance or insufficient maintenance and the like due to the fact that blind maintenance decisions can only be made on battery faults by means of personal experience in the prior art are solved, the recoverability of the fault batteries is intelligently judged by automatically analyzing the historical operation data of the fault batteries, and the maintenance strategy of online maintenance or single body replacement is automatically matched, so that the maintenance efficiency is improved. Therefore, the precision and intelligentization of the operation and maintenance of the fuel cell system are realized.