5results about How to "Reduce test steps" patented technology

The invention relates to the technical field of aging tests, and discloses a test device and method for accelerating material aging through multi-environmental factor coupling, and the test device for accelerating material aging through multi-environmental factor coupling comprises a test box body which is used for providing an aging degree test environment; the illumination system is mounted in the test box body and is used for providing irradiation for the test box body; the salt mist system is connected to one side of the test box body through a pipeline and is used for spraying salt mist into the test box body; and the gas mixing system is connected to one side of the test box body through a pipeline and is used for guiding various gases into the test box body. By adopting the multi-factor coupling material aging system, the combined action of multiple factors in a service environment is simulated, the process of a multi-factor coupling aging test is accelerated, the test steps are simplified, the test period is greatly shortened, the manual labor is reduced, and the system closely combines a salt fog factor with other environmental factors.

The utility model discloses an impermeability instrument test piece automatic loading and unloading sealing test cavity device which comprises a test loading cavity, an inner groove body is arranged in the test loading cavity, the inner groove body in the test loading cavity forms a material groove for an impermeability test, a loading and unloading pipe is arranged above the test loading cavity, and a sealing ring is arranged on a circle of a port part of the loading and unloading pipe. Four side fixing bases are fixedly installed at the four corners of the outer portion of the loading and unloading pipe and are circumferentially distributed at equal intervals through the center circle point of the loading and unloading pipe, a guide supporting rod is fixedly installed on the upper surface of each side fixing base, and an upper top plate is fixedly installed among the top ends of the four guide supporting rods. According to the utility model, the practical use effect of automatic port sealing and opening is achieved in the practical use process, the test loading cavity can be opened and sealed according to different impermeability test requirements, the test diversity is better, and the use requirements of different test processes are met.

The application discloses a battery module and a vehicle, and belongs to the technical field of batteries. The battery module comprises a single battery, an end plate, a control assembly and a first circuit board. The end plate is connected to one side of the single battery. The control assembly is arranged on the side of the end plate away from the single battery and is connected to the end plate. The first circuit board is connected to the single battery and the control assembly. The single battery, the end plate and the control assembly are arranged on the same side of the first circuit board. According to the application, the control assembly is connected to the end plate, so that the control assembly and the end plate form an integral whole, the connection between the control assembly and the first circuit board can be completed before the battery module is put into a box, and the connection difficulty is reduced.

The invention belongs to the technical field of polyester draw texturing yarn production processes, and discloses a method for acquiring the draw texturing critical speed of a polyester pre-oriented yarn, which comprises the following steps of: debugging the draw texturing speed on line to obtain the draw texturing critical speed of the polyester pre-oriented yarn with the fineness of 88-530 dtex; the calculation formula of the debugging starting point value is SS = K * (Vmachine * [0.47 * R-0.00032 * F]), in the formula, SS is the debugging starting point value, R is the deformation ratio of the polyester pre-oriented yarn in the elasticizing process, F is the number of multifilaments of the polyester pre-oriented yarn, and K is a correction coefficient. The method for obtaining the elasticizing critical speed is relatively simple to operate, the test efficiency is improved, and the test consumption is reduced.

The invention provides a method for measuring the sound reflection coefficient of a large-sample underwater acoustic material based on a sound pressure hydrophone array, and the method comprises the steps: employing a CW pulse (continuous wave pulse) as a transmitting signal form, and receiving a signal through a sound pressure hydrophone array disposed near the surface of a sample; then separation of the direct sound and the reflected sound is attributed to a mathematical problem of solving an equation set by utilizing known prior information of measurement system parameters, the direct sound and the reflected sound are separated, and then the sound reflection coefficient of the sample can be rapidly obtained through simple calculation.