54results about How to "Eliminate poor contact" patented technology

The invention relates to an IGBT power module used for a new energy vehicle. The IGBT power module is composed of IGBT chips, Diode chips, thick copper buffer cushion blocks, power terminals, signal terminals, cooling substrates, heat conduction insulating layers and moulded resin. The IGBT chips and the Diode chips are connected with the thick copper buffer cushion blocks through solder layers. The thick copper buffer cushion blocks are connected with the thick copper power terminals through the solder layers so as to realize power connection. The thick copper power terminals are connected with the cooling substrates through the heat conduction insulating layers. An IGBT power module is formed after resin injection moulding. The IGBT power module is characterized in that single-end pins or the cooling substrates with single-end fins are disposed in double surfaces to realize double-surface direct liquid cooling of the power module, and the forced heat dissipation capability of the power module is improved; the connection between the chips and the thick copper power terminals is realized by means of the thick copper buffer cushion blocks, the heat dissipation thermal capacitance of the chips are increased, and the thermal shock resistance of the chips under limiting conditions is improved; and the IGBT power module is internally provided with insulating heat conduction sheets, and the problem of decreased module performance or module damages caused by increased thermal resistance due to poor contact or vibration drop of external insulating sheets is eliminated.

The invention relates to a connection structure of a cell polar ear and a cover plate, which comprises the polar ear and the cover plate, wherein the terminal part of a cell is provided with an insulating space ring and an elastic conductive ring; the polar ear passes through a hole on the insulating space ring, and then is electrically connected with the elastic conductive ring; the elastic conductive ring is also provided with an elastic pressing sheet; and the elastic conductive ring is electrically connected with the cover plate through the elastic pressing sheet. The connection structureis also provided with a clip, wherein one end of the clip is provided with a compressing surface and presses the elastic pressing sheet on the elastic conductive ring through the compressing surface;the other end of the clip is provided with a clamping groove; the insulating space ring is provided with an elastic clamping hook; and the elastic clamping hook is matched with the clamping groove. The connection structure makes the polar ear electrically communicated with the elastic conductive ring through simple assembly so as to be connected with the cover plat without welding, and improves the assembling efficiency. The connection structure is provided with the insulating space ring capable of effectively preventing short circuits caused by a contact between a connected metal conductor and a shell or a polar plate. The connection structure is provided with the elastic pressing sheet to ensure reliable connection between the polar ear and the elastic conductive ring. The connection structure is provided with the clip to eliminate poor contact caused by deformation of the elastic pressing sheet.

The invention discloses a battery assembly method, which comprises the steps of: a) placing an insulating space ring on the upper surfaces of ends of a battery core in a battery shell, penetrating polar lugs of the ends of the battery core through pores on the insulating space ring and extending the polar lugs out to the upper surface of the insulating space ring; b) bending the polar lugs close to the insulating space ring, fixing an elastic conductive ring on the upper surface of the insulating space ring and making the elastic conductive ring tightly press the polar lugs; and c) pressing abattery cover plate on the upper surface of the elastic conductive ring and sealing the periphery of the battery cover plate with the battery shell, wherein the step c) is implemented through the steps of: c1) placing an elastic pressing piece on the upper surface of the elastic conductive ring; c2) firmly locking the elastic pressing piece and the elastic conductive ring on the insulating space ring through attachment clips so as to tightly press the elastic conductive ring on the upper surface of the insulating space ring; and c3) connecting the cover plate and the attachment clips and sealing the periphery of the battery cover plate with the battery shell. The invention ensures that the polar lugs and the cover plate are electrically connected through the simple assembly method, does not need welding, and has convenient assembly and good connection performance.

The invention discloses a loosening-preventing and automatic-fastening device of connection bolts for combination and fixation of storage batteries. According to the loosening-preventing and automatic-fastening device, a ratchet sleeve is arranged on the front side of a fixed connection handle, a ratchet is arranged inside the ratchet sleeve, fixed inner teeth are arranged on the inner side of the ratchet, ratchet teeth are arranged on the outer circumference of the ratchet, receding stopping grooves are formed in the inner side of the ratchet sleeve, receding stopping springs are arranged in the receding stopping grooves, a receding stopping pin is arranged on the front side of each receding stopping spring, a fixed clamping base is arranged on the rear side of the fixed connection handle, and a tension spring is arranged on the upper side of the fixed clamping base. When copper connection bars of a storage battery pack are twisted slightly, and alternatively vibration is produced due to environmental factors, the ratchet teeth prevent the bolts from moving in the loosening direction under the action of the receding stopping pins, the bolts are pushed to rotate in the fastening direction, and the function of automatically fastening the bolts is achieved.

A method and apparatus for winding electric cable features that an electric cable is folded at its central point to become two strands, the folded central point is inserted in a slot on the reel, and the cable is wound on the reel in dual-strand mode.

A brazing material 315 in a paste form is applied in advance to dented portions 314 formed on the outer surface of a core pipe 31, and then a pipe 32 is disposed on the pipe 31, and brazing is carried out in a furnace. In this way, the brazing material 315 that was melted by the heat will be reliably poured into the dented portions 314 and bonded thereto after being cooled down. Thus, the dented portions 314 formed on the outer surface of the core pipe 31 can be reliably filled with the brazing material 33, which consequently eliminates a poor contact between the core pipe 31 and the winding pipe 32. In addition, even if the wall thickness of portions in which projections 313 are formed are made thinner in the process of forming the projections, the dented portions 314 formed on the outer surface are filled with the brazing material 33, so that the core pipe thickness can be reinforced, and the reduction in strength of the portions with the projections 313 can be prevented.

The invention describes a heating floor waterproof bidirectional male and female plug power line, and belongs to the technical field of heating floor fittings. The heating floor waterproof bidirectional male and female plug power line comprises connection power lines and insulation plugs at the two ends of the power lines. The connection power lines comprise null lines and live lines. The both ends of the connecting lines are provided with the insulation plugs. The insulation plugs are provided with pipe-shaped plug columns and pore-shaped female joint grooves matched with the plug columns. The connection power lines are provided with two sealing plugs matched with waterproof plug ports used in the installation of heating floors. One insulation plug at one end leads out a live line connection branch line from the connection power line portion. The live line connection branch line is fixed inside one sealing plug. The other insulation plug at the other end leads out a null line connection branch line from the connection power line portion. The null line connection branch line is fixed inside the other sealing plug. The heating floor waterproof bidirectional male and female plug power line of the invention is advantageous is that: the structure if simple, the usage is convenient, the male and female plugging ensures firm wiring; and misconnection and contact failures are thoroughly eradicated and safety problems are eradicated.

The invention discloses a dustproof and waterproof switch. The dustproof and waterproof switch comprises a switch outer decorative plate and a switch module assembly, wherein the switch outer decorative plate is provided with a buckling plate and switch keys; and the switch module assembly is provided with a supporting plate and a switch module. The dustproof and waterproof switch also comprises a waterproof isolating cover, wherein the waterproof isolating cover is arranged between the switch outer decorative plate and the switch module assembly, and the supporting plate of the switch module assembly is covered with the waterproof isolating cover. The dustproof and waterproof switch can fulfill the waterproof and dustproof purposes without externally mounting a waterproof cover; in addition, water vapor, dust and oil smoke are prevented from entering the switch module assembly from gaps among the buckling plate, the switch keys, the supporting plate and the switch modules, so that water and water vapor can be completely prevented from entering the interior of the switch to rust copper parts or even cause short circuits, and the service life of the switch is prolonged consequently; and in addition, the waterproof isolating cover is a deformable elastic thin film which can be suitable for switches of various shapes, so that mass production of the dustproof and waterproof switch can be realized easily.

The invention discloses a remote-control unit which comprises a shell and a main board, wherein the main board is mounted in the shell, and a battery mounting base for mounting a battery is arranged on the main board. According to the invention, the battery mounting base is welded on the main board, so that the battery can be directly conducted with the main board, and eradicated the phenomenon of bad contact between the battery and the main board is eradicated; furthermore a spring and a battery holder of the existing remote-control unit are omitted, so that the material cost and the assembly cost are reduced directly, and the market competitiveness of a product is improved.

The invention discloses a converting device of positive and negative electrodes of a rectifier, comprising a positive electrode and a negative electrode of the rectifier and a machine frame; the machine frame is fixedly provided with two static contact plates at interval; two sides of each of the static contact plates are provided with movable contact plates; each of the movable contact plates isinstalled on the machine through a reciprocating driving device capable of driving the movable contact plates to contact or separate from the corresponding static plates; two movable contact plates on the same side of the two static contact plates are connected with each other by a flexible conductor and are respectively connected with the positive electrode and the negative electrode; and the two static contact plates are respectively used as two output electrodes or respectively connected with two output electrodes on the machine frame. Through compressing of the driving device disclosed bythe invention, the movable contact plates are contacted with the static contact plates more tightly so as to ensure that the contact points contact with each other by face and improve the conductivity between the movable contact plates and the static contact plates; the contact or separation between the movable contact plates and the static contact plates does not have abrasion; and the faults such as bad contact, switch burning and the like caused by the abrasion of knife switches for acting for a long time are avoided.

The invention belongs to the technical field of electronic information, and discloses a plug-free storage device based on wireless energy transfer technology, which comprises a first component and a second component. The first component comprises a first wireless energy transfer unit, the second component comprises a second wireless energy transfer unit, a Bluetooth unit and a storage unit, and the first wireless energy transfer unit is used for accessing a power supply of a host and sending electric energy information outwards. The second wireless energy transfer unit is used for receiving the electric energy information and supplying power to the Bluetooth unit and the storage unit, the Bluetooth unit is used for data transmission with the host and data reading and writing with the storage unit, and the storage unit is used for data storage. According to the invention, the problems of usage scenario limitation caused by the I/O interface of a portable storage device and shortened service life caused by plugging wear in the prior art are solved, the application scenario of the storage device is expanded, and the service life of the storage device is prolonged.

The invention relates to a resonator. The resonator comprises a resonant cavity, wherein a cover plate is arranged at an opening of the resonant cavity, and a resonant column is arranged inside the resonant cavity. A screw hole is formed in the cover plate opposite to the upper end of the resonant column, and a resonant screw is arranged inside the screw hole. The resonator is characterized in that an upper cylindrical bulge is arranged at the center of the bottom of the resonant cavity, an upper round pit is formed in the lower end of the resonant column, threads are formed on both the inner wall of the round pit and the outer side surface of the upper cylindrical bulge through machining, and the upper cylindrical bulge is screwed in the round pit. Screw holes with identical diameters are formed in the center of the bottom of the resonant cavity, the center of the upper cylindrical bulge and the center of the lower end of the resonant column, a fastening screw is arranged inside the screw holes, and the front end of the fastening screw is screwed in the screw holes at the center of the bottom of the resonant cavity, the center of the upper cylindrical bulge and the center of the lower end of the resonant column sequentially, so that the lower end of the resonant column and the bottom of the resonant cavity are matched closely. With the adoption of the resonator, the fastening reliability between the resonant column and the resonant cavity can be improved. The resonator is applicable to communication equipment of a wireless base station.

The invention relates to a large-current electric connector and a component of the large-current electric connector. The large-current electric connector comprises a shell and a conducting plate fixed on the shell, wherein the front end of the shell serves as a grafting end; a conducting belt which extends along front-and-back direction is arranged on the conducting plate; a contact part which is bent and raised and is in electric contact with a contact part of an adaptive connector is arranged between the front and rear ends of the conducting belt; an insert bolt which is grafted with the adaptive connector is arranged at the front end of the shell; the conducting plate is arranged on the corresponding insert bolt; a limiting block which is used for limiting the elastic deformation when the corresponding conducting belt is grafted with the adaptive connector is arranged on the insert bolt; the limiting block on the insert bolt and the conducting belt on the insert bolt are same in raised direction; and the distance between the side of the limiting block away from the corresponding insert bolt and the insert bolt is less than the distance between the top of the contact part and the corresponding insert bolt. The problem that the conducting belt is easily subjected to fatigue deformation during a working process is solved.

The invention discloses a battery. The terminal part of a cell is provided with an insulating space ring and an elastic conductive ring; a polar ear passes through a hole on the insulating space ring, and then is electrically connected with the elastic conductive ring; the elastic conductive ring is also provided with an elastic pressing sheet; and the elastic conductive ring is electrically connected with the cover plate through the elastic pressing sheet. The battery is also provided with a clip, wherein one end of the clip is provided with a compressing surface and presses the elastic pressing sheet on the elastic conductive ring through the compressing surface; the other end of the clip is provided with a clamping groove; the insulating space ring is provided with an elastic clamping hook; and the elastic clamping hook is matched with the clamping groove. The battery enables the polar ear to be electrically communicated with the elastic conductive ring through simple assembly so as to be connected with the cover plate without welding, and improves the assembling efficiency. The battery is provided with the insulating space ring capable of effectively preventing short circuits caused by a contact between a connected metal conductor and a shell or a polar plate. The battery is provided with the elastic pressing sheet to ensure reliable connection between the polar ear and the elastic conductive ring. The battery is provided with the clip to eliminate poor contact caused by deformation of the elastic pressing sheet.

The invention provides a single-stranded flat copper strip vertically-wound hollow coil suitable for a track circuit. The hollow coil is of a structure that an upper layer and a lower layer are symmetrically arranged, wherein the hollow coil is prepared from a single-stranded flat copper strip wire through vertical winding, each turn of coil body in the hollow coil is in a rounded rectangle shape,and supporting between the turns is achieved by using uniform-thickness epoxy resin gaskets. Three leading-out terminals are directly led out of the hollow coil, and the upper end of the hollow coilis fixed with a multi-supporting-point press plate structure. According to the single-stranded flat copper strip vertically-wound hollow coil, it is ensured that electric parameters of the upper and lower layers of the hollow coil are balanced, the individual difference is small, and insulation between the turns is achieved.