72results about How to "Reduce short circuit" patented technology

The invention relates to the field of solar cells, and discloses a preparation method of a TBC solar cell with a convex isolation region structure. Firstly, the TBC solar cell with a convex isolation region structure can be prepared through an ingenious preparation method, the probability of short circuit of a p region (a boron diffusion region) and an n region (a phosphorus diffusion region) can be reduced, and the thickness of a part of a boron diffusion layer or a phosphorus diffusion layer can be reduced so as to reduce parasitic absorption influence; and secondly, by optimizing the process steps, the TBC solar cell can be obtained by depositing the intrinsic polycrystalline silicon layer once, so that the performance and the yield of the product can be effectively improved, and the production cost can be remarkably reduced at the same time.

The embodiment of the utility model provides a battery device and a power utilization device, and relates to the technical field of batteries, and the battery device comprises a battery monomer and an isolation plate. The battery cell includes a housing and a terminal assembly. The shell comprises a first wall, and the terminal assembly is arranged on the first wall. The isolation plate comprises a main body part and a sealing part, the main body part is provided with a first through hole, and at least part of the terminal assembly is located in the first through hole; and the sealing part is arranged along the circumferential direction of the first through hole and is connected with the main body part, and the sealing part seals a gap between the hole wall of the first through hole and the terminal assembly. According to the battery device provided by the embodiment of the invention, the sealing part is arranged at the circumferential position of the first through hole and seals the gap between the hole wall of the first through hole and the terminal assembly, so that the phenomenon that particulate matters of an assembly part or particulate matters generated by an assembly process fall into the gap in a subsequent assembly process can be reduced, and the sealing performance of the battery device is improved. Therefore, the reliability of the final battery device is improved.

The invention provides a shell-and-tube heat exchanger with an elastic baffle plate, the baffle plate is of an elastic tube bundle structure and comprises an elastic tube bundle, the elastic tube bundle comprises a plurality of arc-shaped tubes, the center lines of the arc-shaped tubes are arcs of concentric circles, the ends of the adjacent arc-shaped tubes in the radial direction are communicated at one end, and the other ends are not communicated. Therefore, the end portion of the communicated end of the tube bundle forms a free end, the arc-shaped tube on the outermost side is provided with an outer side opening end, the arc-shaped tube on the innermost side is provided with an inner side opening end, and the elastic tube bundle forms a series connection structure from the outer side opening end to the inner side opening end. The baffle plates are arranged to be of the elastic tube bundle structure, the contact area of two kinds of fluid is increased through the structure, fluid disturbance is increased, the convective heat transfer coefficient of the shell pass of the heat exchanger can be increased, and therefore the heat transfer efficiency is effectively improved.

This utility model discloses a circuit breaker, belonging to the field of low-voltage electrical technology. The circuit breaker includes a contact structure and a leakage current test circuit. The contact structure includes a first moving contact and a conductive rod electrically connected to the first moving contact. The leakage current test circuit includes a test resistor and a spring contact. The test resistor has a first lead, and the first lead and the end of the conductive rod facing the spring contact are both abutted against and electrically connected to the first surface of the spring contact. The circuit breaker provided by this utility model adopts a lap-connection power extraction method to electrically connect the test resistor and the first moving contact, so as to realize the leakage current test circuit extracting power from the first end of the test resistor, effectively reducing the use of wires, that is, reducing the number of wire connection points and soldering points, reducing the risk of short circuit and leakage current test circuit failure, facilitating assembly, and effectively reducing manufacturing costs.

The battery unit includes: a battery; a battery case that accommodates the battery; a front junction box that is provided on the front side in the front-rear direction of the vehicle and distributes power to the front motor; a rear junction box that is provided on the rear side in the front-rear direction and distributes power to the rear motor; a front bus bar that connects one of the positive electrode terminal and the negative electrode terminal of the battery and the front junction box; a rear bus bar that connects the other of the positive electrode terminal and the negative electrode terminal of the battery and the rear junction box; and a center bus bar connecting the front junction box and the rear junction box.

The invention relates to an energy storage device and a power utilization system. The energy storage device comprises a shell, an electrode assembly, an end cover assembly and a binding piece, wherein the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity, the electrode assembly comprises a plurality of tabs and an electrode main body which are electrically connected, and the tabs and the electrode main body are arranged along a first direction; the end cover assembly is arranged on one side of the shell and used for sealing the containing cavity. The binding piece is positioned between the end cover assembly and the electrode main body; the binding piece is provided with a penetrating hole, and the penetrating hole penetrates through the two opposite surfaces of the binding piece in the first direction. The penetrating hole extends along a second direction, the plurality of tabs penetrate through the penetrating hole, and the first direction is intersected with the second direction; the penetrating hole is provided with a first side wall and a second side wall which are oppositely arranged in the second direction, and in the second direction, the distance between the first side wall and the second side wall is larger than the size of the ends, close to the electrode body, of the tabs.

The utility model discloses an electric toothbrush, which comprises a handle cylinder, a toothbrush head, a toothbrush handle and a toothbrush head, the motor is arranged in the handle cylinder, the motor comprises a motor shaft, and at least one part of the motor shaft extends out of the handle cylinder to be matched with an electronic brush head of the electric toothbrush; the motor shaft is sleeved with the insulation sleeve; the electronic brush head comprises an insulating sleeve, a main control board and a plurality of first electric connecting pieces, the insulating sleeve is arranged in the main control board, the first electric connecting pieces are arranged on the insulating sleeve at intervals, the first electric connecting pieces are electrically connected with the main control board, the first electric connecting pieces are suitable for being inserted into the electronic brush head, and the first electric connecting pieces are used for being electrically connected with second electric connecting pieces in the electronic brush head. According to the electric toothbrush designed by the utility model, the insulating sleeve is arranged at the electric joint of the upper part and the lower part, so that the risk of short circuit is reduced.

The invention discloses a charging pile supporting micro-grid dispatching, and belongs to the technical field of charging piles, the charging pile comprises a charging pile body, a rotating plate is movably connected to the left side of the charging pile body, a supporting plate is fixedly connected to the right side of the charging pile body, air holes are formed in the charging pile body, and a motor is fixedly connected to the back of the charging pile body. The output end of the motor is fixedly connected with a two-way threaded rod, the surface of the two-way threaded rod is in threaded connection with a heat dissipation plate, the back face of the electric pile body is fixedly connected with a limiting rod, and the surface of the limiting rod is fixedly connected with a first fixing block. According to the charging pile supporting micro-grid dispatching, the two-way threaded rod is connected with the heat dissipation plate, so that the heat dissipation area of the charging pile is increased, the heat dissipation efficiency of the charging pile is improved, meanwhile, the heat dissipation plate is installed on the outer wall of the charging pile, the internal space occupied by a heat dissipation device on the charging pile is reduced, and the practicability of the charging pile is improved.

The utility model relates to Christmas ball technical field especially one kind adopts the Christmas ball of environmental protection water-based paint, including shell and top cover, shell inner wall is connected with top cover thread, the upper portion of the inside of shell is equipped with sealing structure, the LED lamp is installed below top cover, the upper portion of LED lamp is connected with power cord electrically, the top cover is fixedly connected with fixed block, the inside of fixed block is equipped with limit structure. This adopts the Christmas ball of environmental protection water-based paint, inserts the elastic ring and sealing washer into the installation groove, the elastic ring can increase additional elasticity, make sealing washer always with top cover and shell resistance tightly, play the role of sealing, reduce the circuit in shell interior to be damped, trigger short circuit condition, bolt rotation drives the top block to move to the both sides slider along the inner wall of slide groove to slide, when the top block tightens the fixed block on the towline, stop rotating bolt, reduce when being subjected to external force, lead to the condition of fixed failure.

This application discloses a PCB interconnect structure for reducing carbon film resistance. The PCB interconnect structure for reducing carbon film resistance includes: a conductive carbon film and a substrate film; a copper foil contact assembly is disposed between the conductive carbon film and the substrate film; the copper foil contact assembly includes an upper copper foil and a lower copper foil, the upper copper foil being fixedly disposed at the conductive carbon film, and the lower copper foil being fixedly disposed at the substrate film. In order to solve the problem that the carbon film button produced by ordinary manufacturing process has a high carbon film resistance due to process problems in the prior art, this application designs a copper foil contact assembly. By setting the copper foil contact assembly, the conductivity of the conductive current can be effectively enhanced during use, and at the same time, a support structure is set to ensure the support gap between the conductive carbon film and the substrate film, thereby greatly reducing short circuits caused by accidental contact, and the use effect is better.

The present invention belongs to the field of lithium ion technology, and discloses a lithium battery separator, including an inorganic coating, a polyethylene layer and a polypropylene layer, the two sides of the inorganic coating are respectively bonded with polyethylene layers, the side of the polyethylene layer facing away from the inorganic coating is bonded with a polypropylene layer, and a flame retardant capsule is arranged in the polyethylene layer, and the flame retardant capsule includes a polyvinylidene fluoride coating layer and a triphenyl phosphate flame retardant arranged in the polyvinylidene fluoride coating layer. A lithium battery separator provided by the present invention has a polyethylene layer and a polypropylene layer bonded on both sides of the inorganic coating, so that the thickness of the lithium battery separator is increased, and because the inorganic coating is sandwiched in the middle, the safety of the separator is greatly increased, and the effective high-temperature closed-cell mechanism of PP and PE and the embedding of the flame retardant capsule improve the large self-discharge phenomenon of the lithium battery and the safety hazards such as fire and explosion caused by short circuit.

A circulating water pump motor for dish-washing machine is convenient for heat dissipation, which comprises a stator core, front and rear machine covers clamped and fixed at two ends of the stator core, bearing holes are formed at central positions of the front and rear machine covers, front butt joints are connected with front end covers through a plurality of front connecting ribs, front heat dissipation holes are formed between adjacent two front connecting ribs, the rear machine cover comprises a rear butt joint and a rear end cover, a rear clamping seat is arranged at an end surface of the rear butt joint, a rear end surface of the stator core is clamped and installed in the rear clamping seat, the rear butt joint is connected with the rear end cover through a plurality of rear connecting ribs, rear heat dissipation holes are formed between adjacent two rear connecting ribs. The front and rear heat dissipation holes constitute direct and effective heat dissipation channels, air convection between the inside and outside of the motor is promoted, and the operating temperature of the motor as a whole, especially the stator core and other heating components, is significantly reduced.

The utility model relates to a connector device capable of reducing connection space, and belongs to the technical field of battery connectors. The device comprises a wiring terminal, a conductive nut and a pressing rivet nut, a bent strip main body of the wiring terminal is laterally provided with a wire interface connected with a first wire, the bottom of the wiring terminal fixes a fuse and the pressing rivet nut through a bolt, and the pressing rivet nut is connected with a second wire. Through the integrated design of the bending structure of the wiring terminal and the fuse and the nut, the vertical layout of the two wires is realized, and the occupation of the transverse space is reduced by more than 50%. The device solves the problem of insufficient wiring space of the upper sealing cover of the sodium battery due to limitation of the bending radius of the lead, improves the space utilization rate and the connection reliability, and reduces the risk of short circuit through partition protection of the insulating layer.

This utility model discloses a control box and a freezer for a refrigerator, comprising: a box body, an installation cavity and a wire baffle plate inside the box body, the wire baffle plate having a first end and a second end, the first end being connected to one side wall of the installation cavity, and the second end being spaced from the other side wall of the installation cavity to form a first wiring interval; the wire baffle plate divides the installation cavity into a first cavity segment and a second cavity segment, and the first wiring interval connects the first cavity segment and the second cavity segment. A freezer includes a cabinet body and a control box for the freezer. The control box of this freezer has a wire baffle plate inside, which can prevent direct contact between the control board and other components, reducing the probability of other components accidentally touching the control board and causing short circuits or signal interference faults. Furthermore, the second end of the wire baffle plate is spaced from the side wall of the control box installation cavity to form a first wiring interval, which constrains the wiring path and reduces the risk of wiring deviating from the preset path and accidentally touching the control board.

This utility model discloses an electrolytic cell, including a side plate and a bottom plate. The side plate and the bottom plate are connected to form a cell body. The bottom plate is provided with several V-shaped grooves, which are arranged in parallel with each other. The V-shaped grooves extend along the length of the cell body. The V-shaped grooves at opposite ends of the bottom plate are connected to the side plate. An anode mud cone is provided at one opposite end of the bottom plate. The V-shaped grooves are all connected to the top of the anode mud cone. Under the condition of maintaining a constant width of the cell body, compared with the traditional single V-shaped bottom structure, this design can make the anode mud directionally accumulate inside the V-shaped grooves by arranging multiple V-shaped grooves in parallel along the horizontal direction at the bottom of the cell body. At the same time, by using the included angle (i.e., friction angle) parameter of the V-shaped grooves, the distance between the electrode plate and the bottom of the cell body can be effectively shortened, thereby achieving effective control of the overall height of the electrolytic cell, inhibiting the discharge of the electrolyte body along the bottom of the cell body, promoting uniform flow of the electrolyte between the electrode plates, and reducing the occurrence of electrolyte short circuits.

This invention relates to the field of lithium battery technology, and in particular to a method for preparing a lithium-ion battery cell. The invention discloses a method for preparing a lithium-ion battery cell, comprising: first, preparing a positive electrode slurry containing modified titanium aluminum carbide, graphene oxide, etc., and a negative electrode slurry containing aminated carbon nanotubes, zinc aluminum spinel, etc., both processed according to specific proportions and processes; second, coating the positive and negative electrode slurries separately onto a current collector, and obtaining positive and negative electrode sheets through drying, coating with a coating agent, etc.; next, preparing a composite separator coated with a separator coating agent and curing it; finally, winding the separator in a positive-separator-negative-separator sequence, and obtaining a lithium-ion battery cell through drying, encapsulation, electrolyte injection, formation, etc.

The utility model relates to energy storage device technical field especially, relates to a kind of energy storage box and energy storage system.Energy storage device includes box, ventilation mechanism and exhaust mechanism, and box is equipped with heat dissipation hole and air outlet.Ventilation mechanism includes driving element and the heat dissipation window of being movably installed in heat dissipation hole, driving element is transmission connection with heat dissipation window, to drive heat dissipation window to open or close heat dissipation hole.Exhaust mechanism includes fan, dust removal box and filter screen, filter screen is installed in dust removal box, and dust removal box is communicated with air outlet;Fan is configured to suck the air in box into dust removal box, and after filtering, it is discharged from air outlet.Energy storage system includes the energy storage box described above, ventilation mechanism realizes the air cooling of energy storage box, and the fan of exhaust mechanism sucks the air in box into dust removal box and discharges box, while improving the air cooling effect of energy storage box, it also realizes the filtration and collection of dust particles and other impurities through dust removal box, improves the safety and reliability of energy storage box.

The invention discloses a packaging structure and a packaging method, and the packaging structure comprises a frame unit which comprises a plurality of pins, the pins comprise functional pins and non-functional pins, the functional pins and the non-functional pins are arranged at intervals, the functional pins are located in the periphery of the frame unit, and the non-functional pins extend to the periphery of the frame unit; the chip is positioned on the functional pin of the frame unit and is electrically connected with the functional pin; the plastic package layer wraps the chip and the frame unit and exposes the side face, located at the periphery position of the frame unit, of the non-functional pin and the bottom face of the functional pin, and the plastic package layer, the chip and the frame unit form a plastic package body; and the shielding layer is positioned on the top surface and the side surface of the plastic package body and is connected with the side surface of the non-functional pin exposed out of the plastic package layer. The bottom of the plastic package body is provided with the non-functional pin, and the shielding layer is connected with the non-functional pin, so that the non-functional pin and the shielding layer jointly play an electromagnetic shielding role, electromagnetic shielding is realized on each surface of the chip, the shielding effect is improved, and the performance of the packaging structure is correspondingly improved.

Embodiments of the present application provide a semiconductor structure and a forming method thereof; wherein the semiconductor structure comprises: a substrate comprising a trench extending along a first direction; N-1 protruding structures arranged along a second direction on a surface of the substrate; heights of the N-1 protruding structures decrease successively along a direction close to the trench; N is greater than or equal to 2; a capacitor structure comprising N electrode plates successively covering surfaces inside the trench and extending along the second direction on the surface of the substrate, and dielectric layers between adjacent electrode plates; wherein an i-th electrode plate extends along the second direction to a surface of an N-i-th protruding structure; a topmost electrode plate on each protruding structure surface has a same height as an N-th electrode plate in the first direction.

This utility model relates to the field of battery technology, specifically a safe and reliable self-protecting short-circuit battery electrode protection structure. It includes a battery body, a protective plate fixedly mounted on the top of the battery body, and a mounting base fixedly mounted on the top of the protective plate. Through holes are provided in the middle of the mounting base and inside the protective plate. The advantages of this utility model are: through the cooperation between the battery body, protective plate, mounting base, through holes, metal conductive parts, semi-circular baffle, and return spring, it can effectively reduce the occurrence of short circuits caused by contact between the two ends of the battery body and metal or other conductors, thus ensuring battery safety. The cooperation between the mounting base and the mounting groove allows for easy disassembly of the mounting base. After the return spring loses its elasticity after prolonged use, it is easy to replace the semi-circular baffle with a new one. The operation is simple and convenient.

The embodiment of the utility model relates to the technical field of motors, and particularly discloses a stator assembly and a flat wire motor, the stator assembly comprises a stator iron core, the inner wall of the stator iron core is provided with a plurality of winding grooves, the plurality of winding grooves are uniformly arranged along the circumferential direction of the inner wall of the stator iron core, and any winding groove extends along the axis direction of the stator iron core; the stator winding comprises flat wire conductors inserted in the winding grooves, each flat wire conductor comprises an in-groove part arranged in the winding groove and a first end and a second end located outside the stator core, the in-groove part is located between the first end and the second end, the first ends of the flat wire conductors form a crown end, and the second ends of the flat wire conductors form a crown end. The star point connecting end of each phase of the stator winding extends out from the radial direction of the crown end; the busbar is arranged on the crown end, the busbar is connected with the star point connecting end of each phase of the stator winding, and the projection of the busbar does not coincide with the projection of the crown end when observed in the axial direction of the stator iron core. Through the above mode, the size of the stator assembly in the axial direction can be reduced.

This invention relates to a negative electrode sheet, its preparation method, and a battery. The negative electrode sheet includes a current collector and an active material layer disposed on at least one surface of the current collector. A coating is disposed on the surface of the active material layer away from the current collector. The coating material includes modified lithium titanate. In this invention, a coating containing modified lithium titanate is disposed on the surface of the active material, which can effectively improve the safety of the battery cell during overcharging. The modified lithium titanate coating not only improves the chemical stability of the negative electrode interface and reduces internal heat generation during overcharging, but also effectively suppresses the excessive lithium plating caused by overcharging by the structural stability of the modified lithium titanate coating, thereby inhibiting lithium dendrite growth and greatly reducing short circuits caused by microperforations in the separator.

The invention discloses a lead structure, and the structure comprises a first port group array which comprises a plurality of first port groups which are respectively arranged in a second direction and a third direction; wherein each first port group comprises two first ports which are adjacent in the second direction and have opposite polarities, the polarities of the two first ports which are adjacent in the second direction and belong to different first port groups are the same, the polarities of the first ports arranged in the third direction are the same, and the first direction, the second direction and the third direction are perpendicular to each other; a plurality of second port groups are formed in the second direction of the change-over switch device, and the polarity of each second port in each second port group is the same as the polarity of each first port, corresponding to the second port group in the third direction, in the first port group array; the plurality of first cable groups are used for connecting the first ports and the second ports which correspond to each other along the third direction; in the second direction, the distance between the adjacent first cable groups with the same polarity is smaller than the distance between the adjacent first cable groups with the opposite polarity.

The utility model discloses an array substrate and a display panel, the array substrate comprises a plurality of data lines, a plurality of common electrode lines, at least two transparent electrodes, a connecting piece and a first bridging piece, the data lines and the common electrode lines extend along a first direction and are alternately arranged along a second direction, the first direction is perpendicular to the second direction, and the first bridging piece is arranged between the data lines and the common electrode lines. The two transparent electrodes are arranged on the two sides of the data line at intervals in the second direction, the transparent electrodes and the data line are arranged on different layers, each transparent electrode comprises a first sub-electrode and a second sub-electrode, and the first sub-electrodes and the second sub-electrodes are arranged at intervals in the first direction; the connecting pieces are connected with the adjacent first sub-electrodes and second sub-electrodes, and the connecting pieces and the common electrode wires are at least partially overlapped; the first bridging piece and the transparent electrode are arranged on the same layer, the first bridging piece is connected with the two adjacent first sub-electrodes, and the first bridging piece and the data line are at least partially overlapped. The reject ratio of the display panel can be reduced.

This invention proposes a fire-resistant insulation structure and fire detection method for a permanent magnet traction converter. The fire-resistant insulation structure includes a converter module, an isolating contactor, and a cabinet. The AC output terminal of the converter module is connected to the input terminal of the isolating contactor, and the output terminal of the isolating contactor is connected to the AC output terminal of the cabinet using a complete cable or a copper busbar with insulating material. This fire-resistant insulation structure fills the gaps in existing fire-resistant design and protection methods for permanent magnet traction systems, ensuring the operational safety of the permanent magnet traction system during application.

The invention relates to the technical field of new energy automobile charging piles, in particular to a new energy automobile full-automatic safety charging pile which comprises a charging pile cabinet fixedly installed on the ground, a six-axis mechanical arm fixedly installed on the charging pile cabinet, a charging gun installed on the six-axis mechanical arm, a sealing mechanism and an extrusion mechanism. By arranging the sealing mechanism, in combination with the sliding adaptation characteristic of the sliding plate, fitting guiding of the arc-shaped plate and double sealing protection of the sealing gasket and the inclined rubber strip, the effect of effectively preventing dust, rainwater and other impurities from entering the vehicle charging port is achieved, and the problem of charging interruption caused by the impurities is avoided; the occurrence probability of safety accidents such as short circuit and electric leakage is reduced; through the arrangement of the extrusion mechanism, the sealing mechanism is tightly attached to the vehicle charging port through guiding sliding of the abutting rod, uniform force application of the abutting piece and continuous elastic pushing linkage of the elastic piece, the sealing mechanism can adapt to curved surface structures on the peripheries of charging ports of different vehicle types, and the sealing reliability is enhanced.

The invention discloses a production method of a high-density multilayer circuit board, and relates to the technical field of circuit boards, the production method comprises cutting, a control room is fixedly mounted on the right side of the cutting, and a pattern transfer device is fixedly mounted on the right side of the control room. The control chamber fixedly installed on the right side of the cutting machine plays a role in intelligent control and adjustment, the pattern transfer device fixedly installed on the right side of the control chamber achieves the effect of inner and outer layer separation work, and meanwhile, plate grinding and film pasting are achieved through the effect of the inner and outer pattern layers; comprising a circuit pattern and a photoinduced solder resist pattern, the function is realized through irradiation of ultraviolet light, the irradiated local area is cured, and then the circuit pattern or the solder resist pattern is formed through development, so that the development has excellent resolution, the circuit quality can be obviously improved, and the production cost is reduced. The improvement of the etching quality is greatly related to the acceleration of the etching rate, and the photosensitive adhesive coated on the surface of the copper foil is removed by the inner layer mold stripping.

The utility model provides a battery monomer fixing device, and relates to the technical field of battery testing, the battery monomer fixing device comprises a fixing seat, a driving pump and two clamping plates arranged oppositely, the two clamping plates are arranged on the fixing seat in a sliding manner, and the clamping plates are internally provided with first cavities for accommodating cooling liquid; the driving pump communicates with the first cavity channels of the two clamping plates and is used for pumping cooling liquid into the first cavity channels. According to the invention, the battery monomers can be cooled through the internal cooling liquid while the battery monomers are fixed, so that the temperature rise of the battery caused by frequent charging and discharging of the battery monomers is reduced or even avoided, and the possibility of thermal runaway and even explosion of the battery in the test process is reduced; and life and property safety in the test process is ensured.