Abstract: A fast charging system, a one to many fast charging data cable, and a charging management device. The charging data cable comprises a charging input terminal, a plurality of charging output terminals and a charging management device, wherein the charging management device is used for controlling, when a device to be charged is connected at at least one charging output terminal, the turning-on of a data communication channel corresponding to the charging output terminal, which is connected to the device to be charged, so as to acquire rated charging information of the device to be charged; for converting, according to the rated charging information, a power source signal received by the charging input terminal into a power source output signal which matches the rated charging information; and for charging, by means of the power source output signal, the device to be charged, which is connected to the charging output terminal.

Abstract: The present invention discloses an optimization method for a screen surface dynamic load of a vibrating screen. The method includes the following steps: step 1. selecting design variables, and establishing an experimental matrix; step 2. performing a response curved surface experiment; step 3. establishing two double-objective optimization models and solving the same to obtain two groups of Pareto solution sets, wherein the solution sets respectively represent screening efficiency optimization paths of the vibrating screen under the conditions of a high screen surface dynamic load and a low screen surface dynamic load; and step 4. calculating an optimization space for a screen surface dynamic load under a high screening efficiency. According to the method of the present invention, the screen surface dynamic load can be directly reduced, and the service life of the screen surface and the whole vibrating screen is prolonged.

Abstract: The present invention discloses an optimization method for a screen surface dynamic load of a vibrating screen. The method includes the following steps: step 1. selecting design variables, and establishing an experimental matrix; step 2. performing a response curved surface experiment; step 3. establishing two double-objective optimization models and solving the same to obtain two groups of Pareto solution sets, wherein the solution sets respectively represent screening efficiency optimization paths of the vibrating screen under the conditions of a high screen surface dynamic load and a low screen surface dynamic load; and step 4. calculating an optimization space for a screen surface dynamic load under a high screening efficiency. According to the method of the present invention, the screen surface dynamic load can be directly reduced, and the service life of the screen surface and the whole vibrating screen is prolonged.

Abstract: A battery cell case comprises a cylindrical body (1), a top cover plate (3) and a bottom cover plate (4). The cylindrical body (1) comprises a top which is open and covered with the top cover plate (3) fixed thereto. The cylindrical body (1) further comprises a bottom configured to be a supporting surface having an opening (2), and the opening (2) of the supporting surface is configured to be covered with the bottom cover plate (4). Further, the opening (2) is configured to be a stepped opening or a conical bulge. Furthermore, a first bulge (12) is arranged on an exterior surface of the bottom surrounding the opening (2). A second bulge (13) is arranged on an exterior surface of the bottom cover plate next to the opening of the bottom. In addition, a battery cell formed from the battery cell case is also provided.