65results about How to "Improve exhaust efficiency" patented technology

The utility model discloses a rescue air cushion convenient to carry, including box, air bag pad and movable board, the inside of box is provided with the cavity, and the one side of box is provided with the notched of being linked with the cavity, and the upper and lower both ends of notched inboard all are through the pivot respectively installed with roll axle no.

This application provides a battery cell and a battery pack, relating to the field of battery technology. The battery cell includes: a housing, an explosion-proof valve disposed within the housing, and an electrode assembly, a first insulating layer, an insulating film, and multiple support structures disposed within the housing. The first insulating layer is connected to the side of the electrode assembly near the explosion-proof valve. The insulating film encloses the electrode assembly and the first insulating layer. A first vent hole penetrating along a first direction is provided on the side of the insulating film near the explosion-proof valve. The first insulating layer, the first vent hole, and the explosion-proof valve are arranged opposite to each other along the first direction. Multiple support structures are located between the insulating film and the housing along the first direction, with adjacent support structures spaced apart. The support structures and the first vent hole are spaced apart along a second direction, and the explosion-proof valve and the support structures are spaced apart along the second direction. Based on the above structural design, the safety of the battery cell is improved.

The invention discloses a TC cavity automatic cleaning system, and relates to the technical field of semiconductor manufacturing, the TC cavity automatic cleaning system comprises a cavity, a vacuum hand disc is installed in the cavity, the automatic cleaning system further comprises a second air inlet branch pipe, the two ends of the bottom of the second air inlet branch pipe penetrate through the top of the cavity and extend into the cavity, and the second air inlet branch pipe is arranged in the cavity. The two ends of the bottom of the second air inlet branch pipe fixedly communicate with the same annular air inlet pipe, and the bottom of the annular air inlet pipe fixedly communicates with a plurality of first air spraying heads. According to the invention, through a simple structure, automatic cleaning in the cavity is realized, manual cavity opening is not needed, the downtime is obviously reduced, contamination particles of a vacuum hand disc are prevented from being adhered to a wafer to cause chip scrapping, the production continuity and efficiency are improved, the production cost is reduced, the production efficiency is improved, the production cost is reduced, and the production cost is reduced. The manual intervention requirement is reduced, precise cleaning is ensured through the adjusting assembly, pollutants are rapidly removed through the exhaust assembly, and cleaning parameters can be optimized through the valve.

The invention discloses an air path system for an air suspension and a vehicle. The air path system comprises an exhaust port, an air inlet and an air outlet, the main gas pipeline is provided with a connecting port connected with an air suspension; the air compression module is used for compressing air, and the air compression module is connected with the main gas pipeline so as to convey gas to the main gas pipeline; the first control valve is connected with the main gas pipeline, and the main gas pipeline can be communicated with the exhaust port through the first control valve in the exhaust state; the second control valve is connected with a main gas pipeline, a first throttling element is arranged between the second control valve and the exhaust port, the second control valve is connected with the first control valve, and the first control valve is configured in a way that when the second control valve is switched to enable the main gas pipeline to be communicated with the first throttling element, the first throttling element is switched to be communicated with the exhaust port; the first control valve can be driven to be switched to the exhaust state through gas of the second control valve. According to the air path system provided by the invention, the air spring not only can exhaust air through the first control valve, but also can exhaust air through the second control valve and the first throttling element, so that the exhaust residual pressure in the air spring is effectively reduced.

The invention discloses a back pressure controllable type automobile air conditioner compressor static scroll plate forging die which is characterized in that a forming upper die and an upper die core are connected in a hot pressing fit manner to form an upper die whole body; the lower die part comprises a forming female die, a female die sleeve, a female die prestress ring and a female die outer ring which are sequentially connected in a hot-press fit mode, and the problem of forging surface quality defects caused by unsmooth exhaust can be solved through a modular structure. The back pressure mechanism pushes the piston through the hydraulic system, back pressure is transmitted to the back pressure body through the push rod, the hydraulic system can adjust proper back pressure according to the size of the forge piece, and forge piece forming is more reliable. According to the invention, a hydraulic system is innovatively introduced, so that the back pressure has adjustable capability, the scroll plate forge piece has good contour in the axial profile, and the dimensional precision is obviously improved; and meanwhile, a modular design is adopted, so that each part is convenient to disassemble, assemble and replace, the maintenance cost is effectively reduced, and the improvement of the production efficiency and the optimization of the production cost are realized.

This utility model relates to the field of die-casting molds, and more particularly to a special wave-shaped centralized venting structure for die-casting molds. It includes an upper cavity punching mold, a lower cavity punching mold, and a mold cavity. It includes a special wave-shaped venting groove. The lower cavity punching mold has an annular block with a height higher than the outer ring around its perimeter. The annular block has multiple first venting channels, which bend downwards along the edge steps of the annular block and extend to the outer ring. The ends of the first venting channels connect to the special wave-shaped venting groove. The cross-section of the special wave-shaped venting groove is wave-shaped, and the inner contour line of the groove is serrated. The special block is inserted into the special wave-shaped venting groove to form a wave-shaped venting structure. This device uses a special wave-shaped venting groove with the same width as existing venting grooves, but improves the thickness by making it wave-shaped, thereby indirectly increasing the width of the venting groove and accelerating the venting efficiency.

This utility model relates to the field of automotive valve technology, and in particular to a fuel tank tipping valve diversion design mechanism, including a valve body, a connecting flange on the valve body, an air inlet on the upper end face of the valve body, an air inlet pipe on the connecting flange communicating with the air inlet, and a through hole on the valve body communicating with the fuel tank. The valve body includes a first valve chamber and a second valve chamber, which are connected by a connecting hole. A valve core assembly is slidably disposed in the second valve chamber. A connector is disposed in the first valve chamber, and a sealing element is slidably disposed below the connector in the first valve chamber. An exhaust channel is provided on the connector extending to one side from its center. The sealing element can open and close the exhaust channel. An exhaust groove is provided in the middle of the connector, and the exhaust groove communicates with the air inlet. An exhaust pipe is provided on the connecting flange communicating with the exhaust channel. The beneficial effects of this utility model are: providing an air inlet to realize the functions of fuel pump supply and air intake, and fuel tank refueling and exhaust, thus providing a fuel tank tipping valve diversion design mechanism.

The embodiment of the utility model provides a battery device, an energy storage device and a power utilization device. The battery device comprises a box body assembly, a battery monomer assembly and a pressure relief mechanism, and a first accommodating cavity and an exhaust structure are formed in the box body assembly. The battery monomer assembly is mounted in the first accommodating cavity; the pressure relief mechanism is arranged on the box body assembly. An exhaust channel is formed in the box body assembly, the pressure relief mechanism is communicated with the exhaust channel, the first containing cavity is communicated with the exhaust channel through the exhaust structure, and the exhaust channel at least comprises a bent section. The battery device provided by the embodiment of the utility model is beneficial to reducing the condition that other parts in the battery device are damaged by high-temperature fluid. Besides, the exhaust passage at least comprises one bent section, so that the length of the exhaust passage is increased, high-temperature fluid generated by thermal runaway of the battery device can be cooled, namely, the temperature of the fluid exhausted by the exhaust passage can be reduced, and the battery device is more convenient to use. And the condition of open fire caused by combustion after the fluid exhausted through the exhaust channel is in contact with oxygen is reduced.

This utility model discloses a waterproof and dustproof high-pressure safety valve for gas, including a housing, a guide seat, a valve, a filter assembly, and a valve seat. The housing has an inlet at its lower end and an outlet along its circumference. This structure adopts a bottom-in, side-out approach, with multiple outlets to improve exhaust efficiency. The guide seat and valve are located inside the housing, with the guide seat slidably connected to the inner wall of the housing. The valve seat is located at the lower end of the housing, with the upper end of the valve corresponding to the lower end of the guide seat. The valve and valve seat slide in contact, and the lower end of the valve corresponds to the flow channel of the valve seat. An exhaust chamber is located inside the housing, connected to the outlet along the circumference of the housing. An elastic sealing ring is provided on the inner wall of the exhaust chamber. Through optimized structural design and sealing performance, this valve solves the problems of leakage and jamming that may occur with traditional safety valves in special environments, improving safety and service life, and providing a guarantee for the long-term stable operation of industrial equipment.

The present application provides a chest drainage tube and a chest drainage system with the chest drainage tube, comprising a collecting tube and a discharge tube integrally extended from the collecting tube, wherein at least a first drainage channel and at least a second drainage channel are formed in the collecting tube, the first drainage channel is used for draining liquid in the chest cavity, and the second drainage channel is used for draining gas in the chest cavity; a discharge channel is formed in the discharge tube, the discharge channel is communicated with the first drainage channel and the second drainage channel, so as to discharge the liquid and / or the gas entering through the first drainage channel and the second drainage channel to the outside of the body; the collecting tube comprises a closed section and an open section, the open section is integrally extended from one end of the closed section, and the closed section is located between the discharge tube and the open section; the first drainage channel and the second drainage channel located in the closed section are closed channel structures, and the first drainage channel and the second drainage channel located in the open section are open channel structures, so that the medium in the chest cavity enters the corresponding drainage channel through the open section.

The application provides a battery monomer and a battery, the battery monomer comprising: a shell, an electrode assembly and a cover plate assembly; the cover plate assembly comprising a cover plate body and a lower insulating piece, the cover plate body being provided with an electrode terminal and an explosion-proof valve which are spaced apart along a first direction; the lower insulating piece comprising an insulating body, a bottom surface of the insulating body being formed with a first protrusion which is protruding, the first protrusion being formed with a gas flow sub-channel which penetrates along the first direction, the insulating body being formed with a ventilation opening which corresponds to the explosion-proof valve, the insulating body and the electrode body defining a gas flow space, the gas flow sub-channel, the gas flow space and the ventilation opening being sequentially communicated to form a gas flow channel; an adapter being arranged in the gas flow space, a bottom surface of the adapter being provided with a protruding structure which protrudes towards the electrode assembly. The battery monomer and the battery provided by the application can ensure that the gas can smoothly pass through the gas flow channel and be discharged from the battery monomer in time and quickly.

This invention relates to the field of 3D printing technology, and provides a venting insert, a mold, a mold system, and a method for 3D printing the venting insert. The venting insert includes: an insert body, which is at least made of permeable steel and is suitable for placement within the cavity of the mold. The insert body has a composite layer structure, comprising at least a first layer of permeable steel and a second layer of permeable steel. The first layer of permeable steel is laid on top of the second layer of permeable steel, and venting passages are formed at least in the first layer of permeable steel. The venting passages in the first layer of permeable steel provide unidirectional ventilation, facilitating the smooth removal of gas from the venting insert through the unidirectional holes and preventing defects on the product surface caused by the venting holes. Simultaneously, the venting passages in the first layer of permeable steel achieve multidirectional venting, allowing gas discharged through the unidirectional holes in the first layer of permeable steel to also be smoothly vented through the multidirectional holes in the second layer of permeable steel.

The application relates to the technical field of batteries, in particular to a battery insulation component, a battery cover plate assembly and a battery. The battery insulation component is formed with a liquid injection groove which protrudes along a first preset direction and towards the side of a pole group, a side wall of the liquid injection groove along a second preset direction is formed with a plurality of layers of auxiliary flow-through notches, the plurality of layers of auxiliary flow-through notches are sequentially arranged along the first preset direction, each layer of the auxiliary flow-through notches comprises at least one auxiliary flow-through notch, and any auxiliary flow-through notch is in communication with the inside and outside of the liquid injection groove. It can be seen that the auxiliary flow-through notches are arranged on the side wall of the liquid injection groove, electrolyte no longer directly hits the battery pole group during the liquid injection process, thereby avoiding damage to the battery pole group, and the plurality of layers of auxiliary flow-through notches also help to improve the exhaust efficiency of a formation process.

This invention discloses a mobile integrated dust collection and purification machine for mines, comprising a mobile body and a processing mechanism, a filtering mechanism, and a conveying mechanism arranged on the mobile body. The processing mechanism includes a first housing, a water tank, a collection box, and an exhaust fan. At least part of the collection box is located inside the first housing and is slidably connected to the first housing. The filtering mechanism includes a second housing, a drive motor, a scraper, and a filter screen. The scraper is driven by the drive motor via a rotating shaft and abuts against the filter screen. The filter screen is movably arranged inside the second housing. The exhaust end of the second housing extends through a riser to below the liquid surface of the water tank. The conveying mechanism includes a housing, an auger, and a second motor. The housing is connected to the collection box to convey dust. The mobile integrated dust collection and purification machine for mines provided by this invention has the advantages of periodic filter cleaning to prevent clogging and easy replacement.

The utility model discloses a kind of all-terrain vehicles, comprising: frame, vehicle body covering, walking system and power system, power system includes engine, exhaust manifold and supercharging assembly, engine has center line and is in line on frame, engine also has air intake and exhaust port, exhaust port is equipped with exhaust port flange and is located engine rear side;Exhaust manifold is connected to exhaust port flange by exhaust manifold flange;Along the installation direction of exhaust manifold and exhaust port, supercharging assembly and exhaust port flange at least partially coincide;Exhaust port flange has a flange end face, exhaust port flange is formed with the first mounting hole that penetrates flange end face, exhaust manifold flange piece is formed with the second mounting hole, when a fastener simultaneously passes through first mounting hole and second mounting hole, exhaust manifold flange is connected to exhaust port flange by fastener;Center line and the plane where flange end face is substantially parallel, by above-mentioned setting, the exhaust efficiency of engine is higher, exhaust manifold installation is more convenient.

The present application relates to printed circuit board manufacturing technology field, specifically said is super conventional dry film plug hole device and method, including: upper die holder, the upper die holder inside is formed with upper chamber, the upper chamber is connected with vacuum / positive pressure switching system, the lower surface of the upper die holder is equipped with the capillary hole that communicates with the upper chamber;And lower die holder, the lower die holder inside is formed with glue injection cavity, the glue injection cavity is connected with glue injection system, the upper surface of the lower die holder is equipped with the glue injection pipe that communicates with the glue injection cavity.The present application is by printed board "inversion", plug hole face down, resin is injected from below, air is discharged from above;Make the hole bubble residual significantly reduce;At the same time, the capillary hole for intercepting resin is arranged in the upper die holder, so that the plug hole of different aperture on the same printed board is filled in turn under the unified negative pressure parameter and glue injection pressure according to the aperture from big to small, solve the problem of big hole in traditional scheme and small hole exhaust deficiency.

This application discloses a tire mold, belonging to the field of tire mold technology. The tire mold includes: a base and a tread pattern shell. The base is provided with multiple positioning elements; the tread pattern shell is provided with a positioning groove, and the tread pattern shell is installed on the positioning elements. A flow guiding gap is formed between the tread pattern shell, the positioning elements, and the base. The flow guiding gap includes a first gap. The top surface of the positioning element abuts against the bottom wall of the positioning groove, and a first gap is formed between the tread pattern shell and the mounting surface. The base is provided with a first exhaust channel, and the positioning elements are provided with a second exhaust channel. The first exhaust channel and the second exhaust channel are connected, and the flow guiding gap is connected to the second exhaust channel. The tread pattern shell includes an arc-shaped transition section, which extends from the starting position to the side where the positioning groove is located. The tangent of the arc-shaped transition section at the starting position has an angle α with a preset direction, and the value range of α is: 0°≤α≤60°. This solves the technical problems of inconvenient tread pattern replacement and easy clogging of the exhaust structure in existing tire molds.

The application relates to the exhaust technology field, in particular to an exhaust system and a vehicle. The exhaust system comprises a catalytic converter, an exhaust gas recirculation system and a muffler. A first connecting pipe is arranged on the side circumferential wall of the catalytic converter, one end of the first connecting pipe is a first air inlet for receiving engine exhaust emission, and the other end is a first exhaust port; the exhaust gas recirculation system is connected with the catalytic converter through the first connecting pipe; the muffler is provided with a second air inlet, the first exhaust port is communicated with the second air inlet, and direct transmission of the exhaust gas from the catalytic converter to the muffler is realized.

The invention provides an end cover assembly, an energy storage device and a power utilization system. 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 provided with an anti-explosion hole, and the anti-explosion hole penetrates through the first surface and the second surface; the explosion-proof assembly is arranged on the top cover and seals the explosion-proof hole; the lower plastic cement is arranged on the second surface side of the top cover, the lower plastic cement comprises a plastic cement part, a fence part and a boss, the plastic cement part is connected with the fence part, and the orthographic projection of the fence part on the second surface at least covers part of the explosion-proof hole; the fence part is provided with an open hole and a first exhaust hole, the open hole is closer to the plastic part than the first exhaust hole, the open hole is communicated with a space between the explosion-proof assembly and the fence part and a space of one side, deviating from the top cover, of the lower plastic part, and the first exhaust hole is communicated with a space between the explosion-proof assembly and the fence part and a space of one side, deviating from the top cover, of the lower plastic part; the boss is convexly arranged on the surface, deviating from the top cover, of the plastic part and connected with the fence part.

The utility model relates to an exhaust device, in particular to an exhaust device suitable for battery formation. According to the technical scheme provided by the utility model, the exhaust device suitable for the battery formation comprises a battery storage unit, a battery formation unit, a battery formation unit, a battery formation unit, a battery formation unit, a battery formation unit, a battery formation unit and a battery formation unit, and is characterized in that the battery formation unit is used for storing a to-be-formed battery pack; the bubble guiding device is connected with the battery containing unit in a matched mode and used for providing corresponding gradual change pressure for the spatial position of each battery in the battery pack at the same time so that bubbles in the batteries can be guided to move in the exhaust direction through the provided gradual change pressure, and when any battery in the battery containing unit is guided to exhaust, the bubbles in the batteries can be guided to move in the exhaust direction. And the gradient pressure provided by the bubble guide device is in a gradually reduced state based on the exhaust moving direction of the bubbles. According to the utility model, bubbles generated in the battery formation process can be effectively guided and discharged, and the exhaust efficiency is improved.

The invention relates to a cooling-water machine starting exhaust control method and system, and solves the problems that the exhaust efficiency in a pipeline is influenced, the internal corrosion of equipment is caused and the service life is influenced because an air plug is formed in the pipeline due to water storage of an existing cooling-water machine. The method comprises the steps of starting a water pump to obtain first water pressure; when the first water pressure is lower than the normal pressure, the first exhaust control device is controlled to adjust the flow speed to the water outlet flow speed; after continuous operation for the first time, second water pressure is obtained; and when the second water pressure is lower than the normal pressure, closing the water pump, starting the second exhaust control device, starting the water pump and closing the second exhaust control device after a second time, and repeating the operation until the water pressure reaches the normal pressure. Air is exhausted by adjusting the flow speed, the exhaust efficiency is improved, stored water is exhausted through the second exhaust control device, and the problems that air is difficult to exhaust within a short time after starting up, and the exhaust effect of an exhaust valve is poor due to air blockage caused by stored water in a plate heat exchanger are solved.

The utility model discloses a motorcycle outer covering part injection mold with a cavity efficient exhaust system, which relates to the technical field of injection molds and comprises a lower mold, an upper mold and an exhaust component. An upper mold is installed above the lower mold, an exhaust assembly is installed between the lower mold and the upper mold, multiple sets of mold cavities are formed in the lower mold, multiple sets of injection molding cavities matched with the mold cavities are formed in the lower surface of the upper mold, the exhaust assembly comprises an exhaust plate, and an exhaust channel is formed in the outer wall of the exhaust plate. An exhaust extension frame is installed at the position, close to the die cavity, of the exhaust channel, and a plurality of exhaust through holes communicating the die cavity with the exhaust channel are formed in the outer wall of the exhaust extension frame. The problems that when an existing injection mold is used, although the existing injection mold is provided with an exhaust structure, the whole mold needs to be greatly changed through the exhaust structure, the mold needs to be rebuilt, and the cost is high are solved.

The utility model relates to battery structure technical field discloses a kind of battery pack, battery pack includes: battery cell unit, multiple are arranged at intervals along first direction;First fireproof plate, be located between adjacent battery cell unit, and the opposite side of battery cell unit along first direction is equipped with first fireproof plate;Second fireproof plate, and first fireproof plate located at the opposite side of battery cell unit is connected respectively;Second fireproof plate and the first end of the battery cell unit along third direction are oppositely arranged, and second fireproof plate is formed with weak area;Glue filling structure, at least with the second end of battery cell unit along third direction is connected arrangement;Battery pack provided by the utility model, when high temperature and high pressure gas is generated when battery cell thermal runaway, gas is limited by glue filling structure, directional impact second fireproof plate, and the plate body fracture at weak area of second fireproof plate, and outlet is formed along the scratch tear, directional pressure relief exhaust structure is formed, avoid gas irregularly scattered and spray.

The invention discloses an epoxy resin forming device, which belongs to the field of forming devices, and comprises a workbench, an epoxy resin forming device and an epoxy resin forming device, and the three-axis adjusting module is detachably arranged on the working table. According to the epoxy resin forming device, through the arranged follow-up processing component, the forming component can be stirred, epoxy resin materials can be evenly laid in a material groove of the lower forming die, the fluidity of epoxy resin is enhanced, the finished product effect of the epoxy resin is improved, an inclined plate can be driven to swing, and the forming efficiency is improved. By exhausting the air to the side of the forming lower die, the fluidity of the epoxy resin can be promoted, and the uniformity of the epoxy resin in a material groove of the forming lower die can be enhanced; and the stirring effect of the two guide rods on the epoxy resin material can be further improved.

This application relates to the field of trifluoromethylbenzenesulfonyl preparation processes, and more particularly to an explosion-proof trifluoromethylbenzenesulfonyl synthesis apparatus, comprising a reaction vessel with an inlet and an outlet, a stirring shaft rotatably mounted inside the reaction vessel, and a discharge pipe connected to a reaction chamber at the end of the discharge pipe furthest from the reaction vessel. The reaction chamber contains a substance for treating trifluoromethyldiazomethane. This application has the effect of reducing the possibility of explosion during the preparation process.

The utility model relates to the technical field of automobile injection molding parts, and discloses an automobile D column air duct injection molding part with a stable drainage function, which comprises an air duct injection molding part, two ends of the air duct injection molding part are respectively and fixedly connected with a connecting plate, the inner wall of each connecting plate is provided with a threaded hole, the inner wall of the air duct injection molding part is provided with a plurality of drainage holes, and the drainage holes are communicated with the threaded holes. A plurality of exhaust holes are formed in the side face, away from the connecting plate, of the air duct injection molding part, a plurality of through holes are formed in the inner wall of the air duct injection molding part, adjusting cylinders are inserted into the inner walls of the through holes correspondingly, and elastic metal sheets are fixedly connected into the adjusting cylinders. According to the connecting plate provided by the utility model, the air duct injection molding part can be fixedly mounted in the automobile D column, the drainage holes and the air patting holes can be used for conducting drainage treatment on airflow, and the flow guide blocks can be used for conducting flow guide, so that the efficiency of the airflow flowing into the drainage holes is improved.

The utility model is suitable for composite film technical field provides a kind of composite film roll with easy exhaust structure, including reel main body, composite film layer and end sealing assembly, the composite film layer surface evenly has first exhaust unit, the first exhaust unit is micron level exhaust hole that penetrates the composite film layer, and exhaust hole is along composite film layer length direction and presents single column interval arrangement;In the utility model, by setting first exhaust unit, utilize micron level exhaust hole that penetrates the composite film layer, combine anti-blocking coating, can directly and long-term stably discharge the air remaining between composite film layer, avoid the problem that membrane roll is loose caused by air accumulation, and the exhaust hole design of single column linear array distribution is guaranteed exhaust efficiency at the same time, maximum degree maintained the film layer structural integrity.

The utility model discloses a chemical vapor infiltration reactor convenient for discharging residual gas. The chemical vapor infiltration reactor comprises a reactor body, the device comprises a device body, an outer sleeve and a driving part, the outer sleeve is fixedly connected to the bottom of the device body in an inserted mode, the end, located in the device body, of the outer sleeve is communicated with a fixing ring with a cavity, an inner sleeve is coaxially connected into the outer sleeve in an inserted mode, and the driving part is arranged in the inner sleeve. The distance between the dispersing part and the gas outlet pipe is changed, so that the nitrogen dispersing range is dynamically adjusted, nitrogen is more uniformly distributed in the device body, residual gas in the device body can be effectively brought out by the uniformly distributed nitrogen, the exhaust efficiency is greatly improved, the residual gas is prevented from being accumulated in the reactor, and a good condition is provided for reaction; the normal operation of the reactor and the stability of the reaction effect are ensured.

The utility model provides a secondary battery and a battery pack, the secondary battery comprises: a housing comprising a shell and a cover plate, one end of the shell is provided with an opening, the cover plate covers the opening and is connected to the shell, and the cover plate is provided with an explosion-proof valve; the electrode assembly is accommodated in the shell, and the electrode assembly comprises a tab facing the cover plate; the current collecting component is in welded connection with the tab, the current collecting component comprises a plurality of first through grooves penetrating through the current collecting component in the thickness direction of the current collecting component, the first through grooves are formed around the center of the current collecting component, and each first through groove longitudinally extends from the edge of the current collecting component in the radial direction of the current collecting component; the end, close to the center, of each first through groove is located in the projection area of the anti-explosion valve in the axial direction of the flow collecting component. According to the technical scheme, at least the exhaust efficiency under the thermal runaway condition can be improved.