10results about How to "Prevent short circuit" patented technology

The utility model discloses a kind of inner cone plug-in cable connectors, it is related to the technical field of power cable connector.The utility model inner cone plug-in cable connector includes seat body, cable plug-in body and compression device;The seat body includes flange seat and connecting column body connected with each other, the inside of the connecting column body is equipped with fixed contact;The cable plug-in body includes insulating handle and power connection component, the insulating handle is sleeved in the outside of the power connection component, the bottom of the power connection component is connected with the fixed contact, the insulating handle is equipped with handle flange, the bottom of the handle flange is abutted with the top of the flange seat;The compression device includes cover and connecting piece, the top of the cover and handle flange is abutted, the connecting piece is sequentially through the cover and flange seat, to fix the insulating handle on the flange seat.The utility model inner cone plug-in cable connector is convenient to use, low in cost and high in safety.

This invention discloses a lithium-ion battery separator with a porous alumina-based composite material coating and its preparation method. The lithium-ion battery separator with the porous alumina-based composite material coating includes a base film and a coating on the base film. The coating includes modified porous alumina, which comprises porous alumina and lithium element supported on the porous alumina. The method for preparing the modified porous alumina includes: immersing the porous alumina in an aqueous solution of lithium salt, simultaneously stirring and sonicating under vacuum for 4-6 hours, drying, grinding into powder, and calcining at 400-600℃ for 2-4 hours under an inert gas atmosphere to obtain the modified porous alumina. The lithium-ion battery separator of this invention has high heat resistance, high wettability, and high ionic conductivity.

The utility model discloses a kind of power station boiler dry slag machine furnace bottom air leakage management devices, specifically related to the field of energy saving and emission reduction of power station boiler, including dry slag machine body, its furnace bottom air leakage is led out through cooling air exhaust interface, furnace bottom air leakage exhaust interface, tail air leakage exhaust interface;Connection pipe;Air blower one, air blower two;Booster fan;Secondary air box outlet;Slag bin, slag discharge room;Transition slag hopper.The power station boiler dry slag machine furnace bottom air leakage management device described in the utility model, by the redesign of the way that traditional dry slag machine cooling air enters hearth, solve the dry slag machine cooling air that is completed heat exchange with furnace bottom slag, as furnace bottom air leakage directly enter hearth to the disturbance of combustion, change dry slag machine cooling air from disordered furnace bottom air leakage to orderly air by secondary air, can effectively improve the stability of hearth combustion, reduce flue gas temperature, reduce fly ash combustible carbon content, thereby improve boiler efficiency, reduce coal consumption.

This utility model discloses a main clutch switch structure for harvesting machinery, including two contact groups. Each contact group includes a movable contact and a fixed contact. The fixed contacts are all fixed on the same insulating component. One set of fixed contacts is connected in series in the engine starting circuit to conduct when the clutch is disengaged, allowing starting. The other set of fixed contacts is connected to the input terminal of the vehicle display screen to output an alarm signal when the clutch is engaged. The two sets of movable contacts are mounted on the same movable plate, with the movable contacts and fixed contacts arranged opposite to each other. The movable plate moves through a movable mechanism.

The utility model relates to synchronous motor technical field provides a kind of plastic package waterproof claw pole permanent magnet synchronous motor, including casing, machine cover, stator is installed in the casing, the stator is provided with terminal, the terminal electrically connected has lead wire, the stator, the stator outer sleeve is equipped with plastic package layer, the terminal is wrapped in the plastic package layer, the fixed connection of the stator has claw, rotor is installed in the casing, the rotor inner sleeve is equipped with shaft, the rotor with the fixed connection of the shaft.The utility model in, by setting up plastic package layer will stator, terminal and lead wire seal protection, effectively insulate water vapor invasion, prevent short circuit and corrosion, significantly improve the operating stability and reliability of motor in humid or harsh environment;Meanwhile, claw is fixed on stator, cooperate the overall structure of casing and machine cover, further enhance the protection level of motor, prolong service life, with good waterproof performance, structural strength and application adaptability.

The application provides a semiconductor substrate and a manufacturing method thereof, the semiconductor substrate comprising: a composite plate comprising at least two metal layers based on a compression connection; the at least two metal layers comprising one molybdenum layer and at least one copper layer; an insulating medium layer covering the metal layers of the composite plate; a wiring layer partially covering the insulating medium layer; a protective layer covering at least part of the wiring layer; the one molybdenum layer and the at least one copper layer of the composite plate are connected through the compression connection, plastic deformation occurs at the layer interface of the molybdenum layer and the at least one copper layer to form mechanical interlocking, so that there is no macroscopic gap at the layer interface of the molybdenum layer and the at least one copper layer and the bonding strength is high; the composite plate can realize the performance complementation of copper and molybdenum, and has both strength and plasticity. Meanwhile, the composite plate formed by copper and molybdenum has higher thermal conductivity and strength than aluminum, and can meet the heat dissipation demand of a modular intelligent power system.

This utility model relates to the field of vehicle parts technology, and in particular to a vehicle-mounted PCBA sealing structure and a vehicle. The vehicle-mounted PCBA sealing structure includes: a PCBA component comprising a PCB board and electronic components mounted on the PCB board; a limiting member formed as a frame structure surrounding the circumferential edge of the PCB board, the inner wall of the limiting member being in contact with the PCB board, such that the inner wall of the limiting member and the PCB board form a glue injection cavity, the depth of which is greater than the height of the electronic components in the thickness direction of the PCB board; and sealant, filling the glue injection cavity to form a sealing layer on the surface of the PCB board, the shape of which is the same as the shape of the PCB board, and the thickness of which is greater than the height of the electronic components. This utility model can achieve sealing of all electronic components on the PCB board, effectively preventing dust, moisture, oxides, or corrosive substances from corroding the electronic components, and also has a reliable cooling and heat dissipation effect.

The application discloses an electronic pressure releasing structure for a pressure cooker, which comprises a push rod hinged to a cover, a first end of the push rod corresponding to the bottom of a steam releasing cap, and a second end of the push rod having an inclined sliding fit surface; a connecting rod arranged below the push rod and movably connected to the cover, an upper end of the connecting rod corresponding to the sliding fit surface; a top rod support fixed to the cover, a motor on the top rod support; and a top rod assembly in threaded fit with a driving shaft of the motor. When the top rod assembly is driven to move upward, the connecting rod is pushed to extrude the sliding fit surface, the push rod is swung around the hinge point to lift the steam releasing cap to release steam. The scheme replaces electromagnetic drive with motor-screw mechanical transmission, completely solves the problem of driving force drop caused by heat attenuation of electromagnet at high temperature, and guarantees the stability and reliability of valve opening and closing; the top rod assembly in threaded fit realizes precise displacement control, avoids unexpected opening and closing, significantly improves pressure control precision, and reduces steam leakage and energy consumption.

The utility model discloses a kind of range-extending eVTOL battery swap cars, including engine, generator, motor, fixed battery, eVTOL battery swap battery and main control system. Engine drives generator power generation, motor drives vehicle with electric energy, main control system controls and regulates generator, charging seat input, fixed battery and the electric energy distribution of battery swap battery, battery swap battery is used for eVTOL battery swap. Battery swap battery is parallelly connected, built-in BMU and the Master BMU communication of main control system, ensure that voltage is consistent, synchronous work. Main control system can distribute generator power, brake recovery energy to fixed or battery swap battery, and battery swap battery electric energy can also be motor power supply. Fixed and battery swap battery adopt interlocking connection, avoid simultaneously accessing power loop, improve security and endurance flexibility.

The present disclosure relates to the technical field of photovoltaic devices, and provides a photovoltaic module and a photovoltaic system. The photovoltaic module comprises a cell, a busbar and an insulating member. The front surface and the back surface of the cell are respectively provided with a solder strip. The busbar is located at the back surface edge of the cell. The insulating member is located between the cell and the busbar, and is used for insulating and separating the cell and the busbar. The busbar has a protruding part protruding along the thickness direction of the cell. The protruding part has a top surface flush with the front surface of the cell, and a side surface opposite to the side of the cell. The solder strip located on the front surface of the cell can be welded with the top surface, and the solder strip located on the back surface of the cell can pass through the insulating member and be welded with the side surface. The photovoltaic system comprises the photovoltaic module. The busbar of the photovoltaic module and the photovoltaic system can be arranged on the back surface of the cell, and does not occupy the space of the front surface of the cell. The distance between the busbar and the cell is only one insulating member, so that the overall thickness is relatively thin, and the structure is more compact. In addition, the busbar or the solder strip does not need to be bent, so that the risk of hidden cracks of the cell is avoided.