55 results about "Plastic cement" patented technology

The invention provides an end cover assembly, an energy storage device and electric equipment. The end cover assembly comprises a top cover, the top cover is provided with a first surface and a second surface which are oppositely arranged, the top cover is further provided with a groove, and the groove is located in the second surface; and the lower plastic cement is arranged on the second surface side of the top cover, the lower plastic cement comprises a plastic cement body and a convex column, the convex column is convexly arranged on one side, facing the top cover, of the plastic cement body, and the convex column is accommodated in the groove and is connected with the top cover.

According to the lower plastic, the end cover assembly, the energy storage device and the electric equipment provided by the invention, the lower plastic can be prevented from being deformed when being impacted by the electrolyte flowing at a high speed, so that the use reliability of the energy storage device can be improved. The lower plastic cement comprises first lower plastic cement and second lower plastic cement, and the first lower plastic cement and the second lower plastic cement are sequentially arranged in the length direction of the lower plastic cement; the first lower plastic comprises a first main body part, a first boss and a second boss, the first main body part is provided with a liquid inlet hole, the liquid inlet hole penetrates through the first main body part, and the first boss and the second boss are fixedly connected to the first face of the first main body part, protrude relative to the first face and are used for abutting against a battery cell of the energy storage device. The first boss is located on the side, facing the second lower plastic, of the liquid inlet hole and spaced from the liquid inlet hole, and the second boss is located on the side, away from the first boss, of the liquid inlet hole and spaced from the liquid inlet hole.

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a lithium battery cover which comprises an aluminum plate, a positive pole module, a negative pole module, an anti-explosion valve and lower plastic cement, the positive pole module and the negative pole module are fixed on the aluminum plate in an injection molding and riveting mode, the aluminum plate is connected in an insulating mode, a liquid injection hole is formed in the aluminum plate, and the anti-explosion valve is arranged in the liquid injection hole. The anti-explosion valve is installed on the aluminum plate, and a reinforcing mechanism is arranged at the bottom of the aluminum plate. On the premise of not increasing the weight of the cover plate and the occupied space, the strength of the battery cover plate is improved, the deformation of the battery cover is reduced, unstable valve opening pressure caused by deformation of the cover plate of the anti-explosion valve is prevented, and the stability of the cover plate is improved.

The utility model discloses a middle frame assembly and electronic equipment, and relates to the technical field of electronic equipment. The middle frame assembly comprises a plurality of borders and a middle plate, the borders are titanium borders or titanium alloy borders, and the borders are opposite in an end-to-end mode to form an annular structure. The material of the middle plate is different from that of the plurality of frames, and the middle plate is located in the annular structure and is connected with the plurality of frames through plastic cement. The frame plays a main role in supporting the internal space of the whole electronic equipment, the frame is a titanium metal frame or a titanium alloy frame, certain structural strength is guaranteed while the weight is reduced, and the middle plate plays an auxiliary role in supporting the internal space of the whole electronic equipment. Compared with the frame, the electronic equipment can adopt the middle plate which is lighter in weight and weaker in structural strength and is made of other materials, so that the middle frame assembly is lighter in overall weight and higher in structural strength, and two parameters of strength and weight are considered.

The utility model discloses a high-speed motor shell and stator integrated molding structure and a high-speed motor, the high-speed motor shell and stator integrated molding structure comprises a stator part, a wire protection cover, a bearing chamber insert and a plastic cement shell, a plurality of coils are arranged on the stator part along the circumferential direction, the plurality of coils are encircled to form an assembling cavity, and the assembling cavity is provided with a plurality of coils. The assembling cavity extends along the length direction of the stator component; the wire protecting cover covers the end surface of the stator component and is used for covering the coil; a via hole is formed in the wire protecting cover and is opposite to the inlet of the assembly cavity; the bearing chamber insert is arranged on one side, deviating from the stator component, of the wire protecting cover; an assembly chamber is arranged on the bearing chamber insert; the assembling chamber, the via hole and the assembling cavity are sequentially communicated, are coaxially arranged and are used for assembling a rotor of the high-speed motor; the plastic shell is integrally formed on the end face of the stator component, the outer circle face of the wire protecting cover and the outer circle face of the bearing chamber insert in an injection molding mode. And the processing flow is simplified and the product structure is optimized by utilizing an integrated forming mode, so that heat dissipation and performance improvement are facilitated.

The utility model provides an end cover assembly, an energy storage device and electric equipment. The end cover assembly can prevent laser from burning upper plastic. The end cover assembly comprises a cover plate, a pole, upper plastic, a pressing ring and a welding part. The cover plate is provided with an assembling hole penetrating through the first surface and the second surface. The pressing ring is located on the side, away from the second surface, of the first surface, a pressing ring body of the pressing ring is provided with a matching hole penetrating through the third surface and the fourth surface, and the protruding part of the pressing ring is arranged on the hole wall face of the matching hole. The pole penetrates through the assembling hole and the matching hole, an opening of a groove of the pole is located in the surface, deviating from the first surface, of the pole, the groove penetrates through the peripheral side face of the pole, and the protruding part is installed in the groove and welded to the groove wall face of the groove; the welding part is positioned on one side, facing the fourth surface, of the third surface, is positioned on one side, facing the groove wall surface of the groove, of the protruding part, and is connected to the pole; and the upper plastic cement is positioned on one side, deviating from the fourth surface, of the third surface, penetrates through the assembly hole, is arranged around the pole column and is also positioned between the pole column and the cover plate.

The utility model provides a battery cell. The battery cell comprises a cover plate body, the first lower plastic cement and the second lower plastic cement are arranged on the first side, facing the electrode assembly, of the cover plate body, and the side, facing the electrode assembly, of the first lower plastic cement is provided with a first combination part; the first pole penetrates through the cover plate body and the first lower plastic cement; the second pole penetrates through the cover plate body and the second lower plastic cement; the support is clamped between a first electrode assembly and a second electrode assembly which are adjacently stacked in the electrode assemblies, the support is provided with an extending end extending out of the first electrode assembly and the second electrode assembly, and the extending end is matched with the first combining part to prevent the first lower plastic from rotating around the first pole. The utility model aims to provide a battery cell, a battery pack and an electronic device so as to at least prevent a first lower plastic from rotating.

The application discloses a mine-used roadway cement concrete mixer and a construction process thereof, and belongs to the technical field of mine-used roadway cement pavement construction. The mixer comprises a running chassis, a power system and an aggregate bin system. The aggregate bin system is arranged on the running chassis and is used for storing and conveying aggregates. The mixer further comprises a powder bin system and a mixing and conveying system. The powder bin system is arranged on the running chassis and is used for storing and conveying powders. The mixing and conveying system is used for receiving the aggregates conveyed by the aggregate bin system and the powders conveyed by the powder bin system, and then stirring and conveying the aggregates and the powders to a receiving port of a slip-form paver. The mine-used roadway cement concrete mixer and the construction process thereof can produce plastic cement concrete on site, continuously supply the slip-form paver with the cement concrete, and ensure the quality of the cement concrete produced on site and the quality of the pavement, so that the cement slip-form paver is provided with a complete set of equipment and the requirements of mine-used roadway cement pavement construction are met.

The utility model provides a battery cell and a battery module, and the battery cell comprises a shell provided with an accommodating cavity; the top cover assembly is arranged on the shell in a covering mode, and the top cover assembly comprises lower plastic cement; the core bag is arranged in the containing cavity, the side, facing the top cover assembly, of the core bag is provided with a protruding part, a step structure is formed between the protruding part and the edge of the core bag, the step structure is provided with a step face extending in the radial direction of the core bag, and the end, close to the core bag, of the lower plastic is used for abutting against the step face. By applying the technical scheme of the utility model, the technical problem that the connecting sheet is easy to break can be improved.

The invention belongs to the technical field of batteries, and discloses a battery which comprises a pole group, a cover plate assembly and a shell, the pole group is connected with a protruding part and a tab, and the protruding part and the tab are arranged at the end part of the pole group in a first direction; the cover plate assembly comprises a cover plate body, a pole and first plastic, the cover plate body is connected with a protective cover and a protective side plate, the pole is arranged on the cover plate body, the surface, away from the pole group, of the protective cover protrudes out of the surface, away from the pole group, of the pole in the first direction, and the first plastic is arranged between the cover plate body and the pole group. The first plastic cement is provided with a first connecting groove and a second connecting groove, the protruding part is clamped in the first connecting groove, and one end, facing the pole group, of the pole column is clamped in the second connecting groove; the shell and the cover plate body are connected and enclose to form a space for accommodating a pole group; the first direction is the height direction of the cover plate body. Therefore, the protruding part can improve the capacity of the battery and protect the pole.

The utility model relates to the technical field of batteries, and provides a power battery top cover insulation structure which comprises an upper top cover, lower plastic cement, a pole assembly, two groups of side clamping plates, a central elastic clamping ring, a heat dissipation plate and an anti-impact assembly, the two groups of side clamping plates are fixedly arranged on two sides of the lower plastic cement, and the central elastic clamping ring is arranged on the upper top cover. The upper top cover is clamped with the lower plastic through the side clamping plate, the central elastic clamping ring is arranged on the lower side of the upper top cover, the pole assemblies are fixedly installed on the two sides of the lower plastic, the upper ends of the pole assemblies penetrate through the side clamping plate and are arranged on the upper top cover, the heat dissipation plate is arranged in the middle of the lower plastic, and the anti-impact assembly is fixedly installed on the lower side of the lower plastic. The connector is simple in structure and convenient to use, the upper top cover and the lower plastic can be quickly connected, and the upper top cover and the lower plastic cannot fall off after being connected and working for a long time.

The utility model discloses a vertical TYPE-C connector, which comprises a middle piece, upper plastic cement, an upper insertion piece, lower plastic cement, main body plastic cement, a lower insertion piece, a shell, an insertion block, a cover plate, a side insertion block, a locking groove and a locking elastic piece, the upper plastic cement is sleeved in through holes symmetrically formed in the top of the middle piece, and the upper insertion piece is arranged in the upper plastic cement; according to the utility model, the upper plastic and the lower plastic respectively support the upper insertion piece and the lower insertion piece, the middle piece is matched for preliminary limiting and then is inserted into the main body plastic to form a connecting structure of the connector, and then the locking groove and the locking elastic piece are matched with each other for locking and limiting, so that the whole structure is simple and easy to assemble; the injection molding processing requirement in the later period of production is reduced, the later maintenance and overhaul process is simplified while the production cost is reduced, the cover plate is connected to the shell in a sleeving mode through the additionally-arranged inserting blocks and the additionally-arranged side inserting blocks for sealing protection, damage to the connector due to falling of the cover plate is prevented, and the practicability of the product is improved.

The utility model discloses a gear motor with a motor and a gear box axis biased, and relates to the technical field of gear motors. The device comprises a connecting plate, one side of the connecting plate is provided with an inner tooth shell, and the other side of the connecting plate is provided with a driving motor; an eccentric assembly is arranged on one side of the connecting plate and comprises a first gear installed at the output end of the driving motor, a second gear engaged with one side of the first gear and a third gear engaged with one side of the second gear. According to the utility model, the structure is compact, the maximum radial space of the motor pins is utilized, so that the radial size of the whole product is minimum, the axis of the motor and the output shaft of the output-stage planetary gearbox are offset and not concentric, but the planetary output shaft is ensured to still extend out of the center of the whole product, and the metal stretching spacer bush is arranged in the middle; and the friction force is smaller than that of plastic cement after lubricating oil is added by utilizing the smoothness of the metal surface, so that the transmission efficiency is improved.

The utility model discloses a board end connector, which comprises a shell (1), inner plastic cement (2) and a terminal structure (3), the terminal structure (3) is positioned in the shell (1) and is fixedly mounted through the inner plastic cement (2), the terminal structure (3) comprises a first terminal (31) and a second terminal (32), the first terminal (31) comprises a contact part (311) and a mounting part (312), and the second terminal (32) comprises a contact part (311) and a mounting part (312). And the mounting part (312) of the first terminal (31) is movably connected with the second terminal (32), so that the first terminal (31) has a swing amount relative to the second terminal (32). Through the above mode, the female end connector can actively adapt to the coaxiality deviation of the female end connector, prevents stress from being concentrated on a single contact point, enhances the elastic deformation capability, is high in compatibility, prolongs the service life, and optimizes the high-frequency application.

The utility model discloses a metal connector terminal implantation injection molding product structure comprising a metal insert, one end of the metal insert is provided with a plastic cement part through injection molding, and two sides of the plastic cement part close to the other end of the metal insert are provided with openings. According to the utility model, when the mold is opened, the metal inserts at the two openings and the external metal insert are always kept straight, so that the stress generated by the plastic part to the metal inserts is reduced, and the inclination phenomenon of the metal inserts due to stress release after the mold is opened is further avoided.

The utility model discloses a battery cover plate which comprises a cover plate body provided with two first through holes; the cover plate lower plastic cement is arranged on the cover plate body, two second through holes are formed in the cover plate lower plastic cement, and the second through holes and the first through holes are coaxially arranged; the cathode post comprises a cathode lower post, cathode post upper plastic cement, a cathode post cover plate, a ceramic piece and a first ceramic ring, one end of the cathode lower post is attached to the cover plate lower plastic cement, the other end of the cathode lower post sequentially penetrates through the second through hole and the first through hole, the cathode post upper plastic cement is arranged on the cathode lower post in a sleeving mode, and the ceramic piece is arranged on the cathode post cover plate. The negative pole upper plastic cement is arranged on one side, opposite to the cover plate lower plastic cement, of the cover plate body, and the negative pole cover plate is arranged in the negative pole upper plastic cement. Therefore, the safety problems such as short circuit and combustion caused by the short circuit can be effectively avoided under the condition of high temperature or thermal runaway of the battery.

The utility model relates to the technical field of PPO plastic cement particles, and discloses a PPO plastic cement particle appearance detection device which comprises a mounting rod and a second connecting rod, an intermittent transmission mechanism is arranged on the side face of the mounting rod, and a detection mechanism is arranged on the top end face of the second connecting rod; the intermittent transmission mechanism comprises a mounting block, and a servo motor is fixedly mounted on the side face of the mounting block. During detection, PPO plastic particles are conveyed to the surface of a conveying belt through a feeding mechanism, a servo motor is further started, then a rotating disc and a pin column are driven to rotate, the rotating disc and the pin column are matched with a groove formed in the side face of an intermittent disc, the intermittent disc is driven to rotate intermittently, a connecting rod is driven to rotate, a driving wheel is driven to rotate, and then the conveying belt is driven to conduct transmission; the PPO plastic particles are conveyed to the bottom face of the detection assembly to be detected, the problems that when a traditional detection device is used for detection, only a small number of particles can be detected, detection is slow, manual auxiliary observation is needed in the detection process, and the detection speed is low can be solved, and the detection quality and efficiency of the device are improved.

The utility model discloses a USB 3.1 10G A female seat elastic height fixing structure, which comprises a female seat main body and a shell, the shell is sleeved at the upper end of the female seat main body, the female seat main body comprises insulator plastic cement, and the upper end of the insulator plastic cement is provided with a first terminal module and a second terminal module which are arranged in a row shape. The second terminal module is arranged at the front end part of the insulator plastic cement, the front end part of the first terminal module is provided with an elastic high end, the front end part of the elastic high end is provided with an elastic high hook, and the elastic high hook is correspondingly matched with a baffle block arranged at the upper end of the insulator plastic cement. The utility model has the advantages that the design is novel, the structure is simple, the elastic height can be kept consistent, the sharp point of the terminal is not higher than the plastic surface due to plastic deformation, and the problem of poor insertion of the crisp PIN after the sharp point of the terminal is higher is solved.

The utility model discloses a shell assembly, a battery monomer and a power device, the shell assembly comprises a shell body, an accommodating cavity is formed in the shell body, a pole group is arranged in the shell body, an explosion-proof hole is formed in the top of the shell body, and first through holes are formed in two sides of the explosion-proof hole; the terminal post is arranged on the shell body; the lower plastic cement is arranged at the top of the shell body and is positioned in the accommodating cavity; and the connecting sheet is arranged between the lower plastic and the pole group, and the top surface of a part of the connecting sheet at the position of the first through hole is positioned between the upper surface of the pole and the lower surface of the lower plastic. According to the shell assembly disclosed by the utility model, the part of the connecting piece at the position of the first through hole is arranged between the lower surface of the pole and the lower surface of the lower plastic, so that the height of the pole is reduced, the internal space utilization rate of the shell assembly is improved, and the volume energy density of the battery is improved.

The application discloses artistic plastic cement composite additives and application thereof, and relates to the technical field of composite cement. The artistic plastic cement composite additives are prepared from the following raw materials in percentage by weight: a retarding agent 0.5-2%, a water-retaining thickening agent 2-6%, a fiber reinforcing agent 1-4%, mineral pigments 70-85%, a thixotropic lubricant 3-7% and functional additives 5-10%. The retarding agent is at least one of tartaric acid, citric acid, sodium gluconate or a lignin sulfonate; the water-retaining thickening agent is selected from hydroxypropyl methylcellulose or methylcellulose; and the fiber reinforcing agent is at least one of polypropylene fiber, glass fiber and lignin fiber. The artistic plastic cement composite additives and application thereof have the advantages that, through the synergy of the retarding agent, the water-retaining thickening agent, the fiber reinforcing agent and the thixotropic lubricant, the artistic plastic cement composite additives have superior comprehensive performance in artistic plastic cement, and the strength and construction performance are taken into account.

The utility model relates to the technical field of patch receiving head design and packaging, and solves the technical problem that an integrated circuit chip cannot effectively shield a light source. The utility model provides a patch infrared receiving head capable of fully shielding light interference, which comprises a support body, a conductive wire and a sealing colloid, and the surface of the support body is provided with two die bonding areas and a plurality of wire bonding areas. According to the utility model, the front surface and the side surface of the integrated circuit chip are wrapped by the light-proof black plastic cement, so that light sources from the front surface and the side surface can be effectively shielded, light rays are prevented from entering the integrated circuit chip, the influence of light interference on the performance of the integrated circuit chip is avoided, and the stability and the reliability of a product are improved; according to the utility model, the interference of a light source is reduced, the integrated circuit chip is ensured not to be influenced by external environmental factors in the working process, the receiving function of the product is optimized, the signal can be processed more accurately, and the overall performance is improved.

The utility model discloses a hybrid electrical self-locking wire-to-board circular connector, comprising a male end connector which comprises a male end plastic body and a male terminal arranged in the male end plastic body; the female end connector comprises a female end plastic cement body and a female terminal assembly arranged in the female end plastic cement body; the detection mechanism comprises a first terminal and a second terminal, the first terminal is arranged in the male end connector, and the second terminal is arranged in the female end connector; in the same axial direction, the male terminal extends out to one side of the male end plastic body; the female end connector and the male end connector are connected in a matching manner through the male terminal, the female terminal assembly, the first terminal and the second terminal. According to the utility model, plugging signals of the male and female end connectors can be detected, so that the service life and current carrying of a connector system are prevented from being influenced by electric arcs generated in the plugging process of the male and female end connectors.

The invention relates to the technical field of batteries, in particular to a battery cell and electric equipment. The battery cell comprises a cover plate and a shell, the cover plate comprises a cover plate body and a first plastic part, the first plastic part is connected with one side of the cover plate body, and the outer edge of the first plastic part is arranged on the inner side of the outer edge of the cover plate body; a liquid injection hole penetrating through the cover plate body is formed in the cover plate body, the first plastic part comprises a liquid outlet groove and a liquid injection groove which are communicated with each other, the liquid injection groove is correspondingly communicated with the liquid injection hole, and a liquid injection flow guide hole penetrating through the liquid injection groove is formed in the first bottom wall of the liquid injection groove; the shell is connected with the outer edge of the cover plate body, an exhaust gap is formed between the shell and the liquid outlet groove, and an exhaust notch communicated with the exhaust gap is formed in the side wall of the liquid outlet groove. According to the battery cell structure, the problem that in an existing battery cell structure, an insulating rubber tape on the surface of a pole group and an electrolyte flow guide hole formed below cover plate lower plastic cement are prone to forming physical interference, then exhaust holes are blocked, and battery cell inflation is caused due to incomplete battery cell exhaust is solved.

The invention discloses a top cover assembly, a battery and an energy storage system.The top cover assembly comprises a top cover, lower plastic, a pole, a welding ring and a collector plate, the top cover is provided with a first surface and a second surface which are opposite in the thickness direction, and a first pole hole penetrating through the first surface and the second surface is formed in the top cover; the second surface of the top cover is provided with a first containing groove surrounding the first pole column hole, the lower plastic cement is arranged close to one side of the second surface of the top cover, the lower plastic cement comprises a third surface facing the top cover and a fourth surface deviating from the top cover, and the lower plastic cement is provided with a second pole column hole penetrating through the third surface and the fourth surface; the third surface of the lower plastic cement is provided with a flange surrounding the second pole hole, the fourth surface of the lower plastic cement is provided with a second accommodating groove surrounding the second pole hole, the flange is located in the first accommodating groove, the first pole hole is communicated with the second pole hole, and the pole is arranged in the first pole hole and the second pole hole in a penetrating manner; and the pole is provided with a bottom end extending out of the first surface and a top end extending out of the second surface.

The utility model discloses a 180-degree split type grounding connector, which comprises a plastic cement main body, a plurality of connector terminals, a grounding terminal and a nut sleeve, the plurality of connector terminals are arranged in the inner middle part of the plastic cement main body in a penetrating manner along the axial direction, and the inner part of the nut sleeve is sleeved on the middle upper part of the outer ring surface of the plastic cement main body; the grounding terminal is clamped at the periphery of the lower part of the plastic main body, and the top of the grounding terminal abuts against the bottom of the nut sleeve; the bottom of the grounding terminal is vertically inserted into the PCB, and the bottom of the plastic body and the bottom of the connector terminal are electrically connected with the PCB. According to the utility model, the grounding connector interface is vertically connected with the PCB, the space of the box body is not limited, and the application range is wide; the tops of the grounding terminals are clamped on the periphery of the lower portion of the plastic body, the bottoms of the grounding terminals are inserted into the PCB, and the overall assembly efficiency of the connector is high.

The utility model provides a plastic cement cylinder product injection molding demolding mold which comprises a lower mold, synchronous hydraulic lifting rods arranged at four corners of the lower mold, an upper mold arranged at the tops of the synchronous hydraulic lifting rods, an injection molding pipe embedded in one side of the top of the upper mold, an injection molding opening formed in one side of the bottom of the upper mold, and the injection molding pipe is communicated with the injection molding opening in a sealed mode. Injection grooves are formed in the two sides of the bottom of the inner wall of the lower mold, synchronous electric telescopic rods are arranged on one sides of the inner walls of the injection grooves, special-shaped plugging blocks are arranged at one ends of the synchronous electric telescopic rods, liquid injection electromagnetic valves are embedded in the tops of the other sides of the inner walls of the injection grooves, and liquid drainage electromagnetic valves are embedded in the bottoms of the other sides of the inner walls of the injection grooves; according to the injection demolding mold for the plastic cement cylinder product, a cooling liquid containing substance is pumped into an injection groove through an injection flow dividing pipe, cooling liquid permeates into an injection part and a groove in the inner wall of a lower mold, so that the injection part is rapidly cooled and shaped and is separated from the inner wall of the lower mold, redundant cooling liquid is discharged through a discharging flow dividing pipe, and automatic demolding of the lower mold is completed.

The invention relates to the technical field of batteries, in particular to a battery cell and a power utilization device. The battery cell comprises a cover plate, a shell and a pole group; the cover plate comprises a cover plate body and a first plastic part, the liquid injection part comprises a surrounding wall and a bottom wall, the bottom wall and the cover plate are oppositely arranged at intervals in the length direction, and the surrounding wall is arranged around the bottom wall by at least one circle so as to define a liquid injection groove which is open to the liquid injection hole; an air passing gap is formed between one end, far away from the insulating body in the width direction, of the liquid injection part and the shell, the liquid injection part further comprises an air passing channel penetrating through the enclosure bulkhead, so that a side exhaust port is formed in the enclosure bulkhead, and the side exhaust port is connected with the liquid injection groove and the air passing gap. According to the battery cell structure, the problems that in an existing battery cell structure, electrolyte flow guide holes are generally formed below cover plate lower plastic cement to serve as exhaust holes to guide gas in the battery cell to the outside, but physical interference is easily formed between the insulating rubber tape on the surface of the pole group and the exhaust holes, then the exhaust holes are blocked, battery cell exhausting is not complete, and battery cell bulging is caused are solved.

The utility model discloses a waterproof shell sleeve and EMI anti-interference integrated connector which comprises a shell, a connecting seat, waterproof plastic cement, a first fixing seat, a second fixing seat, a fixing plate, a positioning groove, a clamping block, an EMI main body, a positioning plate, a clamping groove, lower-row plastic cement, lower-row terminals, upper-row plastic cement, upper-row terminals and a waterproof middle steel sheet. Positioning grooves are formed in the positions, corresponding to the positioning plates, of the outer walls of the two sides of the first fixing base, the positioning plates are arranged in the positioning grooves, clamping blocks are arranged at the positions, corresponding to the clamping grooves, of the inner walls of the positioning grooves, and the clamping blocks are clamped in the clamping grooves; according to the utility model, two parts, namely the sleeve shell and the EMI, are combined into a whole through a stamping and stretching process, so that the original tedious process flow is greatly simplified, a plurality of processing and assembling links are eliminated, the production efficiency is remarkably improved, and meanwhile, the connection and matching problems among the parts are reduced, so that the production cost is reduced. And the overall stability and reliability of the product are also remarkably improved.

The utility model discloses a lithium battery cover plate, which comprises positive electrode upper plastic cement, positive electrode lower plastic cement and positive electrode upper plastic cement double through holes, the negative electrode upper plastic comprises negative electrode upper plastic double through holes; a substrate positive electrode double-through hole and a substrate negative electrode double-through hole are symmetrically distributed in the two sides of the substrate; a lower plastic positive electrode double-through hole and a lower plastic negative electrode double-through hole are symmetrically distributed on two sides of the lower plastic; the positive electrode bipolar column comprises a positive electrode double-column body and a positive electrode column base which are integrally formed; the cathode double-pole column comprises a cathode double-pole body and a cathode column base which are integrally formed; wherein in the first direction, the positive electrode double-column body sequentially penetrates through the lower plastic positive electrode double-through hole, the substrate positive electrode double-through hole and the positive electrode upper plastic double-through hole, and the negative electrode double-column body sequentially penetrates through the lower plastic negative electrode double-through hole, the substrate negative electrode double-through hole and the negative electrode upper plastic double-through hole, the positive electrode column base and the negative electrode column base are attached to the lower plastic. The lithium battery cover plate can improve the overcurrent capability of the lithium battery and is simple to assemble. The utility model also discloses a lithium battery.

The utility model provides a cover plate assembly and a battery cell. The cover plate assembly comprises a cover plate body, the pole is mounted on the cover plate body; the lower plastic cement is arranged on the pole in a sleeving manner and is positioned below the cover plate body; and the at least one insulating sheet is arranged on the pole in a sleeving manner and is positioned between the lower plastic and the cover plate body and / or between the lower plastic and the pole base of the pole. According to the utility model, the insulating film sheets are arranged on one or two of the side, in contact with the cover plate body, of the lower plastic cement and the side, in contact with the pole bottom plate, of the lower plastic cement, so that after a large amount of electrolyte enters the cavity, if the cover plate body and the pole bottom plate need to be communicated, the required moving distance of the electrolyte is lengthened; even if the cover plate body is communicated with the pole bottom plate by the electrolyte, the resistance value of the resistor of the whole cathode top cover is not obviously reduced; when a small amount of electrolyte enters the cavity, the insulating film can directly block the connection between the electrolyte and the pole bottom plate or the cover plate body, so that the safety of the battery cell is ensured.