17results about How to "Uniform protection" patented technology

The invention relates to the technical field of high-voltage cascade energy storage systems, and discloses a high-voltage cascade energy storage system based on nested power modules and a control method thereof.The high-voltage cascade energy storage system comprises three phases of chain type energy storage bridge arms connected with three phase lines of a power grid respectively, and each phase of chain type energy storage bridge arm comprises a plurality of cascaded nested power modules; each nested power module comprises a plurality of direct-current chain type energy storage units and an H-bridge circuit, the plurality of direct-current chain type energy storage units are connected in parallel and then are connected with the direct-current side of the H-bridge circuit, and the alternating-current side of the H-bridge circuit is connected with an alternating-current switch; the direct current chain type energy storage unit comprises a plurality of energy storage modules, an electric reactor and a direct current switch, the plurality of energy storage modules are cascaded and then are sequentially connected with the electric reactor and the direct current switch, each energy storage module comprises a battery pack and a half-bridge circuit connected with the battery pack, and the half-bridge circuit is used for charge state balance control of the battery pack. According to the invention, any battery pack can be bypassed after a fault, and the operation reliability of the high-voltage cascade energy storage system is improved.

The utility model relates to a solar cell and a photovoltaic module. The solar cell includes: a cell body; the plurality of first electrodes are arranged on the surface of one side of the battery body; the first electrode comprises a first slurry layer, a first seed layer and a first metal protection layer, the first slurry layer is arranged on the battery body, the first seed layer covers the first slurry layer, and the first metal protection layer covers the first seed layer. The cost can be reduced, and the reliability of the electrode can be improved.

The utility model relates to the technical field of medical instruments, and discloses an optical fiber pressure sensor packaging structure and an intrusive miniature blood pump, the optical fiber pressure sensor packaging structure comprises a first metal section, a wire winding section and a second metal section, the first metal section, the wire winding section and the second metal section are communicated with one another and are sequentially connected to form a continuous metal packaging structure, the first metal section is of a hollow tubular structure, a probe of an optical fiber pressure sensor is arranged in the first metal section, and the first metal section is provided with a pressure sensing window; the wire winding section is used for winding and wrapping the periphery of part of the optical fiber section of the optical fiber pressure sensor, and the second metal section is of a hollow tubular structure and is used for internally arranging part of the optical fiber section, so that the optical fiber section and a probe in the optical fiber pressure sensor can be effectively protected, and laser welding is easier to realize by utilizing the metal sections on the two sides of the metal packaging structure. The purpose that the optical fiber pressure sensor is integrated on the miniature blood pump is achieved.

The present invention relates to the field of battery balancing protection technology, and in particular to a balancing protection method and system for multiple series-connected battery cells. The method comprises the following steps: collecting multi-node battery operation status data of multiple series-connected battery cells and performing series gradient influence analysis to obtain internal resistance change series gradient influence data; calculating performance attenuation gradient based on internal resistance change series gradient influence data to obtain thermal damage performance attenuation gradient data; formulating a series-connected battery cell balancing intervention strategy based on the thermal damage performance attenuation gradient data to obtain a battery cell balancing intervention strategy; performing automated firmware design based on the battery cell balancing intervention strategy to obtain a balancing intervention strategy firmware; and embedding the balancing intervention strategy firmware into a battery cell management system to perform battery cell balancing protection. The present invention makes the battery balancing protection technology more perfect by optimizing the battery balancing protection technology.

The invention relates to the technical field of pipeline laying, in particular to a trenchless pipeline laying construction method which comprises the following steps: S1, surveying and setting out, and determining a construction position; s2, working pits are excavated, and the working pits are excavated in the two sides of the road surface correspondingly; s3, a drilling machine is placed in place, and the drilling machine is placed at a designated position; s4, guide hole drilling is conducted, specifically, the position of a guide drill bit of a drilling machine is adjusted, so that the guide drill bit drills into the soil according to a pre-designed track, and a drill hole communicating with the working pits on the two sides is drilled; s5, broaching is conducted, specifically, after the guiding drill bit reaches the expected position, the guiding drill bit is detached, a broaching drill bit is replaced, broaching is conducted through the broaching drill bit, then the broaching drill bits with the diameters increasing in sequence are sequentially replaced, broaching operation is repeatedly conducted, and the diameter of a drilled hole reaches the designed diameter; s6, pipe pulling is conducted, specifically, the pipeline is pulled into the drill hole, and the pipeline is laid at the designated position; and S7, pipeline welding. The method has the effect of avoiding adverse effects on life and traffic of residents in the construction process.

The utility model discloses a vehicle-mounted hydrogen energy protection device and a new energy commercial vehicle, and relates to the technical field of hydrogen energy protection. Comprising a base, a connecting support and a protective clamping plate, the connecting bracket and the protective clamping plate are connected to form an accommodating space for accommodating a hydrogen bottle; the outer sides of the connecting supports are connected to the two sides of a frame longitudinal beam through connecting assemblies, and the outer sides of the protective clamping plates are provided with cooling assembly installation positions used for installing cooling assemblies. The hydrogen cylinders can be connected to the two sides of the frame longitudinal beam through the connecting supports, the space of a container is not occupied, the container utilization rate can be increased, and the transportation efficiency is improved; and through the arrangement of the protection clamping plates, the hydrogen bottle can be protected, integration of the cooling assembly can be achieved, independent configuration is not needed during installation, integrated assembly with the hydrogen bottle can be achieved, and rapid assembly is achieved.

The utility model relates to a PE (Poly Ethylene) packaging film with moisture-proof and waterproof performance, which belongs to the technical field of packaging films and comprises a bottom layer used for contacting with a product, a contact bulge fixed at the bottom of the bottom layer, a buffer layer arranged above the bottom layer, an accommodating groove formed on the buffer layer through stamping, and a protective layer arranged above the buffer layer. A protective structure is embedded in the bottom of the protective layer, a top layer is arranged above the protective layer, the containing grooves are filled with expansion filler, the expansion filler is bentonite or a cement-based material, the number of the buffer layers is two, the number of the protective layers is two, the containing grooves in the buffer layers are arranged in a matrix mode, and the containing grooves in different layers are arranged in a staggered mode. According to the packaging film, friction force is increased through the bottom layer contact protrusions, sliding displacement of a product is avoided, and stability is enhanced; the buffer layer containing groove is filled with materials, water can be absorbed, holes can be blocked, impact force can be dispersed, and the damp-proof and waterproof performance is improved; the protective structure of the protective layer enhances the strength and toughness, so that the protection is more uniform, and the protective effect is enhanced.

This utility model discloses a road marking pollution prevention device during construction, relating to the technical field of road construction equipment. It includes a fixed plate, with several electric push rods evenly arranged on the left outer wall of the fixed plate. A mounting shell is provided at the end of the telescopic arm of each electric push rod. A slider is slidably mounted inside the mounting shell, and a threaded rod is rotatably mounted inside the mounting shell, passing through and threadedly connected to the slider. A mounting frame is provided on the side wall of the slider, and a fixed shell is located at the bottom left side of the mounting frame. A groove is provided on the upper inner wall of the fixed shell, and two sliding plates are slidably mounted on the fixed shell. A protective plate is provided at the bottom of the sliding plates. This utility model uses the electric push rods and threaded rods to adjust the position of the mounting shell and protective plate, while simultaneously adjusting the spacing of the protective plates with a bidirectional screw. This allows the device to adapt to road markings of different thicknesses and positions, ensuring that the markings receive comprehensive and uniform protection during construction.

The application discloses a pipeline defect ultrasonic guided wave detection device and method based on a piezoelectric transduction principle, which comprises a plurality of ultrasonic guided wave excitation and receiving modules which are hingedly connected to each other through connecting pieces with concave-convex structures to form an array ring arranged around the circumference of a pipeline to be detected; a single ultrasonic guided wave excitation and receiving module comprises a connecting piece, a transducer module, and a first fine-tuning elastic pre-pressing assembly connected between the connecting piece and the transducer module; a sensitive piezoelectric transducer unit is arranged at the bottom end of the transducer module and connected with the transducer module through a second fine-tuning elastic pre-pressing assembly; the first fine-tuning elastic pre-pressing assembly is adjusted to tightly fix the transducer module to the pipeline to be detected; and the second fine-tuning elastic pre-pressing assembly is adjusted to fine-tune the pre-pressing force between the sensitive piezoelectric transducer unit and the pipeline to be detected.

The utility model discloses an intelligent clinical medicine transfer box, and belongs to the technical field of medicine transfer. The device comprises a box body provided with an opening; the box cover is arranged at the opening and hinged to the box body; the center of the annular air bag is provided with a medicine containing hole used for containing medicine, and when the annular air bag is inflated and deflated, the medicine containing hole is shrunk or expanded. The inflation and deflation device is connected between the annular air bag and the box cover and used for inflating and deflating the annular air bag, when the box cover is opened, the medicine containing holes are expanded, and when the box cover is closed, the medicine containing holes are shrunk. The medicine cabinet has the damping function, people can take and place medicines easily, the complexity of taking and placing the medicines is reduced, and the convenience of taking and placing the medicines is improved.

This utility model discloses an aluminum coil annealing device in the production of cast and rolled aluminum plates, including an annealing box. A sealing plate is movably installed on one side of the annealing box. An adjustment component is set inside the annealing box. An air pump is fixedly installed on the top of the annealing box. A transmission pipe is fixedly installed at the output end of the air pump. Spray heads are symmetrically fixedly installed at the bottom of the transmission pipe, and the spray heads extend into the interior of the annealing box. An air inlet pipe is fixedly installed at the input end of the air pump. This solution, by setting up an air pump, a transmission pipe, spray heads, and an air inlet pipe, ensures that the nitrogen gas is evenly distributed in the annealing box. The air pump is responsible for delivering nitrogen gas to the transmission pipe, which in turn delivers the nitrogen gas to the inside of the spray heads. The spray heads then evenly spray nitrogen gas in the annealing box, ensuring an expanded nitrogen gas coverage area. This design allows the aluminum coil to be uniformly protected during the annealing process, preventing oxidation, thereby improving the practicality and efficiency of the aluminum coil annealing device in the production of cast and rolled aluminum plates.

The invention relates to the technical field of electric power fittings, and particularly discloses an assembled grading ring which comprises a grading pipe, an adjusting rod is fixedly connected to the side face of the grading pipe, a fixing frame is fixedly connected to the side face of the adjusting rod, a fixing plate is fixedly connected to the inner wall of the fixing frame, and the fixing frame comprises a main support. The side face of the main support is rotationally connected with a left rotating frame through a rotating shaft, the side face of the left rotating frame is fixedly connected with a fixing seat, the side face of the fixing seat is fixedly connected with a braking seat, and the side face of the main support is fixedly connected with the side face of a pressure equalizing pipe. The end, away from the left rotating frame, of the main support is rotationally connected with a right rotating frame through a rotating shaft, and during installation, the brake seat is released, so that the left rotating frame and the right rotating frame rotate along the side face of the main support, and therefore the assembled grading ring can be conveniently clamped into the side face of a cable. The purposes of convenient installation and disassembly and automatic adjustment according to the cable are achieved.

The invention relates to a clamping sleeve press-fitting device for a zinc oxide resistor disc and a press-fitting method.The press-fitting device comprises a mounting frame and a press-fitting mechanism, the mounting frame provides a mounting position and support for the press-fitting mechanism, the press-fitting mechanism comprises a lower pressing block, an upper pressing block and a press-fitting driving device, the lower pressing block is arranged on the mounting frame, and the upper pressing block is arranged on the mounting frame; the upper pressing block is arranged on the mounting frame through a press-fitting driving device, the upper pressing block is located above the lower pressing block, the lower surface of the upper pressing block is parallel and opposite to the upper surface of the lower pressing block, and the press-fitting driving device is used for driving the upper pressing block to move up and down so that the upper pressing block can be close to or away from the lower pressing block. Therefore, the press-fitting device can replace manual work to achieve press-fitting operation of the clamping sleeve, the production efficiency can be improved, the upper pressing block and the lower pressing block can be matched to evenly apply pressure to the resistor disc and the clamping sleeve, compared with manual sleeving, the clamping sleeve is stressed more evenly in the circumferential direction, and therefore even protection on the edge of the resistor disc is achieved, and the service life of the resistor disc is prolonged. And the generation of aluminum deviation of the resistor disc is reduced.

The utility model discloses a multi-layer elastic corrugated board which comprises two supporting layers, the two supporting layers are symmetrically arranged up and down, and each supporting layer comprises an outer-layer paper board, an inner-layer paper board and a supporting ridge located between the outer-layer paper board and the inner-layer paper board; the utility model relates to an elastic cushion, which comprises two supporting layers and an elastic layer, the elastic layer is arranged between the two supporting layers, the elastic layer comprises a connecting ridge with a wave-shaped structure, and buffering pieces and buffering pipes are arranged on the outer side of the connecting ridge along the wave-shaped structure in a staggered mode. The overall elasticity and impact resistance are improved; the buffering piece and the buffering pipe are made of paper or plastic materials with good elasticity and serve as buffering and elastic components, the impact resistance and elasticity of the paperboard are further improved, and the packaging material can bear larger pressure and cannot be damaged; the sunscreen layer is arranged on the outer side of the outer-layer paperboard and used for preventing potential damage, such as color fading or material degeneration, caused by direct sunlight to internal articles.

The invention relates to the technical field of data centers, and discloses a water supply device of an offshore data center cooling system, which comprises a pump protection pipe, a pipeline assembly and a submersible pump, the lower end of the pump protection pipe extends into seawater, the upper end of the pump protection pipe extends above an ocean platform, the pipeline assembly and the submersible pump are arranged in the pump protection pipe, and the submersible pump is fixedly connected to the lower end of the pipeline assembly. The pipeline assembly comprises a plurality of water pipe units which are connected with one another, the water pipe units can move in the axial direction of the interior of the pump protection pipe, and the water pipe units and the submersible pump can be hoisted out of or hoisted into the pump protection pipe section by section from the position above the ocean platform. Through the modular design, the pipeline assemblies can be flexibly combined according to the water depth, the water pipe units are short in length, the requirement for hoisting equipment is low, maintenance can be completed through conventional tools of the platform, divers are not needed during maintenance, all operations are conducted on the platform, and the difficulty and cost are greatly reduced.

The utility model relates to the technical field of automobile part processing machinery, in particular to a front floor die which comprises a lower die, an upper die connected to the lower die, a guide mechanism connected to the lower die, a plurality of punches connected to the upper die and a mounting block connected to the upper die. The punch is detachably connected to the mounting head, the mounting block is detachably connected to the upper die, and the punch is plugged by the mounting block. The front floor machining device has the advantages that front floors of two specifications can be machined conveniently, and the production efficiency is improved.