8results about How to "Protection is in progress" patented technology

This invention provides an extreme energy-saving range control method and system for new energy vehicles, comprising: acquiring vehicle operating status information and adaptively activating an energy-saving range mode based on the operating status information; dividing the vehicle's battery rated capacity into a normal driving stage range and an emergency driving stage range according to a ratio based on the activation result, and adaptively adjusting the vehicle's power output and accessory energy consumption based on the vehicle's real-time battery level in the normal driving stage range; adjusting the vehicle's standard operating procedures when the vehicle's battery level enters the emergency driving stage range, and prohibiting the vehicle from driving when the battery level reaches 0. This method effectively extends the vehicle's driving range, avoids battery over-discharge, and better meets user needs and vehicle protection requirements.

The utility model relates to the field of fuel cells, in particular to a connector structure integrating gas flow control and distribution, which comprises a connector body, a gas channel arranged in the connector body and three throttle valve mounting bases arranged on the connector body. An air system electromagnetic switch valve, a hydrogen system electromagnetic switch valve and a heat management system electromagnetic switch valve are arranged on the three throttle valve mounting bases respectively, an air inlet body communicated with the air channel is arranged on the connector body, an air inlet and a proportional valve air inlet are formed in the air inlet body, and a proportional valve is arranged on the air inlet body. A pressure sensor mounting base is arranged on the connector body, and the pressure sensor is arranged on the pressure sensor mounting base. According to the utility model, more precise pressure control and real-time monitoring can be carried out on compressed air entering the fuel cell system, so that not only can the airtightness test of the fuel cell system be met, but also the protection of the fuel cell system can be met.

An integrated composite engine hood and a preparation process thereof belong to the technical field of automobile engine hoods. The integrated composite engine hood includes a load-bearing structure formed by hot-pressing and compounding a surface layer and a continuous glass fiber composite sheet with glass fibers arranged in a cross-weaving direction. A reinforcing rib layer is formed by hot-pressing and injection molding a side of the load-bearing structure away from the surface layer. The beneficial effect of the present invention is that the present invention realizes the structural integration of the engine hood, reduces the manufacturing process, reduces the manufacturing cost, ensures that the product has high dimensional stability while meeting the requirements of pedestrian protection, and improves the coating performance and environmental protection level.

This utility model belongs to the field of train inspection technology and discloses a buffer fixture placed on the track, including a fixed base and a buffer component. The fixed base is provided with a clamping component one and a clamping component two, at least one of which is movable relative to the other, so that the clamping component one and the clamping component two clamp the track or release the track. The buffer component is connected to the fixed base through an elastic member. The elastic member includes a reset member and a guide rod, with the reset member sleeved on the outside of the guide rod. In the fixed base and the buffer component, the guide rod is fixedly connected to one of them and slidably connected to the other. This utility model can absorb greater impact loads through two-stage buffering, thereby better meeting the buffering requirements of the inspection robot. This utility model also discloses an inspection system with the above-mentioned buffer fixture.

The invention discloses a flexible direct-current transmission line protection method and system based on modulus high-frequency components. The method comprises the following steps: acquiring a fault characteristic frequency range in a transmission line area in advance by using a full-element analysis method; thirdly, collecting positive voltage and negative voltage of a multi-terminal flexible direct current power transmission line protection installation position at multiple different moments, and realizing protection starting detection by using positive and negative break variables; the positive electrode grounding fault, the negative electrode grounding fault and the bipolar fault are detected by using the accumulated zero-mode voltage; and finally, according to a fault line mode voltage characteristic frequency range in a preset area and a multi-dimensional variational mode decomposition algorithm, carrying out time-frequency characteristic component extraction on the line mode voltage of the line, and constructing an adaptive peak voltage quantitative index to realize quantitative detection on the fault area of the power transmission line. According to the invention, a full-element analysis method, a multi-dimensional variational mode decomposition algorithm and a self-adaptive voltage peak value are utilized, so that the single-ended protection method can tolerate 1500 ohm transition resistance, and the sensitivity of the protection method is effectively improved.

The utility model is suitable for the technical field of electrical accessories and optical communication equipment, and discloses a multifunctional dustproof cover for a junction box, two ends of the side edge of a cover shell are fixedly provided with optical fiber heat shrink tube buckles, and the top surface of each optical fiber heat shrink tube buckle is fixedly provided with an upper fiber coiling claw and a lower fiber coiling claw. Four groups of four-corner fiber coiling claws are fixedly mounted on the surfaces of the side edges of the cover shell, column type buckles are vertically and fixedly mounted on the surfaces of the two ends of the middle of the side edges of the cover shell, bendable and detachable baffle pieces are mounted at the two ends of the side edges of the cover shell, and a limiting clamping piece is fixedly mounted on the surface of the top of each bendable and detachable baffle piece. According to the technical scheme of the utility model, by combining the structural arrangement of the optical fiber heat shrink tube buckle, the upper and lower fiber coiling claws and the four-corner fiber coiling claws, a complete fiber coiling structure can be formed, the coiling and fixing of the optical fiber can be realized, and the requirements of protecting, fixing and coiling the optical cable can be met.

The esophageal ultrasonic probe protective sleeve comprises a protective sleeve body, the top of the protective sleeve body is of an open structure, a splicing seat is movably connected to the top of the protective sleeve body, a rubber plug is movably inserted into an inner cavity of the splicing seat, and an insertion hole is formed in the center of the upper surface of the rubber plug in a penetrating mode. The upper surface of the rubber plug is connected with an exhaust plug in a conducting mode, the exhaust plug is located on one side of the inserting hole, an exhaust pipe is movably inserted into the surface of the exhaust plug, and an inserting head is integrally formed on the surface of the bottom of the splicing base. The protective sleeve has the advantages that the rubber plug is matched with the splicing base to seal the top of the protective sleeve body, the vacuum device is matched with the exhaust pipe, air in an inner cavity of the protective sleeve body can be pumped out, the inner wall of the protective sleeve abuts against the surface of the esophageal ultrasonic probe, protection of the esophageal ultrasonic probe is improved, and the protective sleeve is convenient to use. And meanwhile, the esophagus detection accuracy of the esophagus ultrasonic probe is also improved.

The application discloses a tetraphenyl ethylene derivative, a preparation method and application as a perfluorooctyl sulfonate fluorescent probe, and the tetraphenyl ethylene derivative is characterized by a formula II. The tetraphenyl ethylene derivative has obvious aggregation-induced emission effect, excellent luminescence performance, and can realize 'on' detection of perfluorooctane sulfonate. The preparation method of the perfluorooctane sulfonate fluorescent probe of the tetraphenyl ethylene derivative is simple, the reaction condition is mild, is conducive to environmental protection, and meets the characteristics of green chemistry. The prepared tetraphenyl ethylene derivative fluorescent probe has excellent chemical stability, high sensitivity and good anti-interference ability, can realize rapid and efficient detection of perfluorooctyl sulfonate, and is expected to realize industrialization and on-site application.