61results about How to "Guaranteed degree of protection" patented technology

The invention provides a safe and energy-saving lithium battery pack dual-mode thermal management system and method. The system comprises a battery pack, a battery pack shell, a liquid-cooling tube heat exchanger, and an external air-cooling fin with a fan. A micro heat pipe array is attached to the surface of a battery or a battery module, and a protruding portion of the micro heat pipe array isattached to the battery pack shell. The liquid-cooling tube heat exchanger is attached to the outer surface of the battery pack shell and is connected to an electric vehicle refrigeration system, anda substrate of the external air-cooling fin is attached to the outside of the liquid-cooling tube heat exchanger. According to the invention, the micro heat pipe array with high heat transfer and aircooling and liquid cooling modes are effectively combined, on one hand, the heat inside the battery can be effectively transmitted to the outside, the temperature is prevented from being too high, theuniform temperature of the battery is ensured, the heat dissipation efficiency is high, on the other hand, different systems are started in different states and temperatures, and the avoidance of thermal runaway and substantial energy savings are achieved.

The invention discloses a solar photovoltaic junction box, which comprises a box body, a bypass diode and a control circuit, wherein the box body is internally provided with a main cavity chamber and an auxiliary cavity chamber sealed and isolated by multiple separators; at least one separator is a heat-conducting plate; the bypass diode is arranged on the heat-conducting plate located at the side of the main cavity chamber and conducts heat to the auxiliary cavity chamber via the heat-conducting plate; the control circuit is located in the main cavity chamber; and the auxiliary cavity chamber is provided with an air inlet and an air outlet passing through the box body and connected with the outer part of the box body, and a cooling air duct is formed. The solar photovoltaic junction box of the invention has the advantages of simple structure, good cooling effects, high protection level and the like.

The invention discloses a balance breather valve which comprises a shell, a first waterproof breathing film and a dynamic sealing structure, wherein a protruding part is arranged on the top surface of the shell; the first waterproof breathing film is fixed at the bottom of the protruding part; the dynamic sealing structure is used for hermitically isolating the first waterproof breathing film from an inner cavity of the shell or communicating the first waterproof breathing film to the inner cavity of the shell; the dynamic sealing structure comprises a driving mechanism, a first sealing body which is hermitically arranged on the shell and surrounds the side wall of the first waterproof breathing film and a second sealing body opposite to the first sealing body along the vertical direction; the first waterproof breathing film is located in a cavity encircled by the first sealing body and the second sealing body; and the driving mechanism drives the second sealing body to move towards or away from the direction of the first sealing body, so that the second sealing body can be hermitically matched with the first sealing body or separated from the first sealing body. In case of an abnormal working condition, the first sealing body and the second sealing body realize sealing to prevent external water vapors from entering a box body, so that components in the box body can operate under constant humidity, and the sealing property of the balance breather valve is improved.

The invention relates to a sealing box which comprises a box body, an upper cover and a cover screw, wherein a concave sealing groove is arranged at the upper cover and matched with a sealing ring, a cover screw hole structure is arranged outside the concave sealing groove, the cover screw penetrates the cover screw hole, a strip-shaped peg-shaped dummy club is arranged at the top of the box body, the strip-shaped peg-shaped dummy club is matched with the concave sealing groove, a base and a base mounting hole are arranged at the bottom of the box body, a socket is installed on the base, a strengthening rib is installed on the base, and the thread structure of the cover screw is a feather tongue structure. The sealing box is suitable for various industrial control fields, and especially suitable for the protective sealing box for installing an automatic controller, an electrical switch and a control system in a sealing manner.

The invention relates to a multi-channel multi-functional ultrasonic heat and cold amount meter. The heat and cold amount meter comprises a meter body, a meter head upper cover, a meter head lower cover and a temperature sensor. A glass window is arranged at the top of the meter head upper cover, a circuit board is arranged inside the meter head upper cover, the meter head upper cover is connected with the meter head lower cover through fixing screws, a pipeline extending downwards is arranged on the meter head lower cover, the meter body is in a hollow pipeline shape, and the two ends of the meter body are provided with a water inlet and a water outlet respectively. Transducer installation holes are formed in the two sides of the meter body, ultrasonic transducers are installed in the transducer installation holes, and wire penetrating holes are connected above the transducer installation holes and connected with the pipeline of the meter head lower cover, and the meter body is further provided with a temperature measuring hole and a pressure measuring hole. Through kinds of seal and protection treatment, the protection grade of the product reaches the level of IP68, and the heat and cold amount meter can normally work under kinds of environments and is particularly suitable for occasions of an unstable water field, a severe using environment and a turbid sewage medium environment.

The invention relates to a dense busway socket device, which includes a socket mechanism and a pile head. The socket mechanism includes a socket seat and a socket cover. The socket seat is a cuboid structure, and a ring of fixed support seats is provided on the outer periphery of the bottom of the socket seat. The first socket, the second socket, the third socket, the fourth socket and the fifth socket are arranged alternately on the socket seat. The pile head includes a plug-in end and a fixed end, and the pile head is inserted into the first socket. , The second socket, the third socket, the fourth socket and the fifth socket have achieved high density, and have the characteristics of low impedance, fast heat dissipation, and simple process.

The invention provides an input and output terminal for an automobile-mounted power supply of a new-energy automobile. The input and output terminal comprises a rectangular body (1). A wire penetrating hole (2) is longitudinally formed in the body (1). A protruding installation body (3) is arranged in the middle of the body (1). The upper portion of the installation body (3) is hemispherical, and the lower portion of the installation body (3) is cuboid. A clamping groove (4) is formed in the surface of the middle of the installation body (3) and extends to the bottom face of the cuboid. The two ends of the body (1) are respectively provided with an annular groove (5). An attaching block (6) is further arranged at the joint of the clamping groove (4) and the bottom face of the cuboid. By means of the design, compression elasticity of rubber is tightly wrapped on an input and output wire penetrating through the middle, on one hand, the wire is prevented from damage, and on the other hand, it is ensured that the portion, making contact with the outside world, of the product is prevented from dust or water. Meanwhile, proper attaching blocks are added to the joints between the input and output terminal and the two sides of a shell seal ring, and therefore a good waterproofing effect is achieved for dead corners.

The invention provides an electric door. The electric door comprises a door body, an electronic control box and a swing arm mechanism. The door body comprises a door leaf and a door frame. The door leaf is movably arranged on the door frame. The electronic control box comprises a control mainboard, a relay, a motor and power sources. The control mainboard and the motor are connected with the relay. The power sources are connected with the control mainboard, the relay and the motor. The control mainboard controls the relay to drive the power sources to supply power to the motor or not, and rotation or rotation stopping of the motor can be achieved. One end of the swing arm mechanism is connected with the door leaf, and the other end of the swing arm mechanism is connected with the output end of the motor. The electric door is simple in structure and good in reliability and stability; and an induction part is matched with the control mainboard, whether someone exists in an induction areaor not can be detected, and therefore the door leaf is automatically opened, the electric door has the function of recording the opening and closing frequency of the door leaf, and data reference isprovided for maintainers.

The invention provides a dustproof and waterproof energy-saving type valve island which comprises a confluence plate, valve sealing gaskets, two or more electromagnetic valves, a circuit board component, a coil sealing gasket, a DIN guide rail block button, a DIN guide rail and a light guide column; the electromagnetic valves are fixed on the confluence plate in a transverse row; the circuit boardcomponent penetrates through the front end part of the confluence plate; the coil sealing gasket is buckled on the confluence plate in an inserting manner and is arranged between the confluence plateand the electromagnetic valves; the light guide column is buckled on the confluence plate in the inserting manner and is arranged on the outer side corresponding to the electromagnetic valves; threeair inlet holes are also distributed on one side of the circuit board component and in the lower end in the penetration direction of the circuit board component; a fixed panel is also fixed on one side, close to the coil sealing gasket, of the confluence plate and at the end part of the circuit board component; and a back panel is also fixed on the other side of the confluence plate and at the other end part of the circuit board component. The dustproof and waterproof energy-saving type valve island provided by the invention is simple in structure, centralized in wiring, stable and reliable inconnection, convenient and rapid in mounting, good in dustproof, waterproof and energy saving effects and effectively prolonged in the service life.

What is described is a method of producing flexible electrical cords (K) which are cut to length, the method being applied by using a flexible strip (14) having a plurality of electrically conductive lines (12) extending along the strip (14). Along the flexible strip (14) there are arranged electrical connectors (10) including a plurality of tubular conductors (22) each of which extends in a bridge-like manner between two subsequent portions of one of the conductive lines (12) of said plurality. A portion of given length is separated from the flexible strip (14) by cutting one of the aforesaid connectors (10) in a transverse plane (T) in such a way that the tubular conductors (22) located therein are cut. The portion separated in this way forms a flexible electrical cord (K) having, at one end at least, a plurality of electrical connection holes or sockets (100) exposed as a result of the cutting of the tubular conductors (22).

The invention relates to an electrical cabinet with an air flow circulating device, include a plate shell, vertical beam, Fan, air inlet cover, the plate and shell are arranged on the outside of the frame composed of the cross beam and the vertical beam to form a sealed cabinet body, The vertical beam and the cross beam are both hollow structures, and are provided with an installation hole and anair outlet hole. The fan is arranged on the upper part of the cabinet body. The air outlet of the fan sucking hot air from the cabinet is connected with the air inlet of the air inlet cover, and the air outlet of the air inlet cover is communicated with the hollow channel of the vertical beam from the upper part of the vertical beam. The invention introduces the hot air in the fan suction cabinetinto the vertical beam through the air inlet cover, An air duct is formed in the inside of the cabinet to realize circulating flow inside the cabinet, and hot air is exchanged with the outside througha metal plate and shell, so that special heat exchange equipment is not required to be added, and the external air of the cabinet body is not required to be sucked into the cabinet body to meet the heat dissipation effect, and the protection level of the cabinet body is ensured.

The invention discloses a dry-wet separated vertical lithium battery pack hot liquid cooling type management system and method. The system comprises one or more groups of vertical batteries and / or battery modules in the battery pack, a battery pack shell and a liquid cooling plate-tube heat exchanger, a micro heat pipe array is transversely attached to the front surface of the battery and / or the battery module; the length of the micro heat pipe array is larger than the width of the battery and / or the battery module, the two ends of the micro heat pipe array are bent, the micro heat pipe arrayattached to the front face of the battery and / or the battery module serves as a heat transfer section, and the bent vertical part is attached to the two side faces to serve as an evaporation section and a condensation section respectively and is also attached to the corresponding battery pack shell. The battery pack shell surrounds the battery pack and is of a closed structure, and a heat conduction partition plate is at least arranged at the position corresponding to the condensation section; the liquid cooling plate-tube heat exchanger is at least correspondingly attached to the outer surface of the heat conduction partition plate and connected with the refrigerating system, and a base plate of the liquid cooling plate-tube heat exchanger is sealed. The system has the advantages of highheat dissipation efficiency, dry-wet separation and liquid leakage prevention.

The invention discloses a privacy calculation method and application of a big data application open platform, and the method comprises the following steps: obtaining software information of the big data application open platform needing privacy calculation, building privacy level parameters, calculating the privacy level parameters, and sorting the privacy level parameters according to privacy levels; and according to the arrangement sequence, performing simulation operation on each item data in the software in sequence. The invention comprises performing simulation activity on big data needing to be subjected to privacy calculation by applying open platform software so as to calculate the occurrence probability of privacy data in the simulation activity; determining a privacy degree requirement index of software putaway according to the property and effect of the software; comparing the occurrence probability of the privacy data in the software simulation activity with the privacy degree requirement index of software shelving, so that whether the software can be shelved on the big data application open platform or not is calculated, the privacy protection degree of the software on the big data application open platform is guaranteed, and actual application is facilitated.

The invention discloses an engineering machinery instrument casing which comprises a combined panel, a combined pressing plate and a combined rear casing. The combined pressing plate is arranged between the combined panel and the combined rear casing, and water-proof protruding ridges are arranged on the peripheries of two sides of the combined pressing plate. Water-proof grooves corresponding to the water-proof ridges are formed in a face where the combined panel is in contact with the combined pressing plate and a face where the combined rear casing is in contact with the combined pressing plate. Sealing rubber strips pressed by the water-proof ridges in a butting mode are arranged on the two water-proof grooves, and the combined panel and the combined pressing plate form fixed connection through connection and embedding of nuts through sunk screws. The combined rear casing and the combined panel form fixed connection through a hexagonal bolt arranged on the combined panel through a sunk screw in a connection mode and penetrating the combined pressing plate. The engineering machinery instrument casing is simple in structure, effectively solves the problem that a panel embedded with nuts on the periphery is easy to crack, guarantees protective level, and greatly reduces mold manufacturing difficulty and difficulty of material selection and follow-up process processing.

The invention relates to a lithium battery pack thermal management system and method with dry and wet separation. The system comprises a battery pack, a battery pack housing and a liquid cooling platetube heat exchanger, the surface of the battery or the battery module is attached to a micro heat pipe array, the extending portion of the micro heat pipe array is attached to the battery pack housing; the liquid cooling plate tube heat exchanger is attached to the outer surface of the battery pack housing, the liquid cooling plate tube heat exchanger is connected with an electric vehicle refrigerating system. The lithium battery pack thermal management system and method with dry and wet separation combine the micro heat pipe array with efficient heat transfer with a liquid cooling mode to arrange one or more than one liquid cooling plate tube heat exchangers arranged at the outer portion of each battery pack to effectively conduct the temperature in the battery through the further position and arrangement relation of the micro heat pipe array and the battery unit so as to avoid the too high temperature, ensure the uniform temperature of the battery and improve the heat dissipation efficiency.

The invention relates to pillar steel. The steel comprises: a skeleton and an installing hole in the skeleton. The skeleton is a cylinder. A cross section of the cylinder is a closed figure. A side face 1 and a side face 2 of the skeleton are equipped with the installing holes respectively. The closed figure of the cross section of the cylinder is formed through the following steps: extending rightward from a starting end; folding a first pleat 90 DEG downwards; folding a second pleat 90 DEG rightwards; folding a third pleat 90 DEG downwards; folding a fourth pleat 19.5 DEG leftwards and downwards; folding a double-layer edge and a fifth pleat 180 DEG upwards and folding a sixth pleat 160.5 DEG upwards; folding a seventh pleat 90 DEG leftwards; folding a eighth pleat 91 DEG upwards; folding a ninth pleat 90 DEG rightwards; folding a tenth pleat 90 DEG upwards; folding a eleventh pleat 90 DEG leftwards; folding a twelfth pleat 180 DEG rightwards; merging two layers of sheet materials and ending to a tail end. Two places of double layer folding is performed to the skeleton in the invention. Intensity is large and weight is light. A standardization degree of a cabinet can be guaranteed. A side plate and a door plate of the cabinet can be effectively installed. The intensity and a protection grade of the cabinet can be guaranteed. The steel is suitable for many kinds of the cabinets.

The invention provides an air-cooling lithium battery pack thermal management system and method with a high protection level. The system comprises a battery pack, a battery pack casing and an externalair-cooling module. A micro heat pipe array is attached to the surface of a battery or a battery module, and a protruding portion of the micro heat pipe array is attached to the battery pack shell. The external air-cooling module is in close contact with the outer surface of the battery pack outer casing, the external air-cooling module has an air-cooling fin inside and a fan at a side. Accordingto the invention, the micro heat pipe array with high heat transfer and an air cooling mode are effectively combined, the heat inside the battery can be effectively transmitted to the outside, the temperature is prevented from being too high, the uniform temperature of the battery is ensured, the heat dissipation efficiency is high. The control system can automatically start the fan, the externalair-cooling fin automatically dissipate heat to achieve un-cooling energy-saving heat dissipation, the automatic heat dissipation is carried out when the battery is heated during the parking of an electric vehicle, and major safety risks such as thermal runaway are greatly suppressed.

The invention discloses a safe and energy-saving lithium battery pack dual-mode thermal management system and method, and the system comprises one or more layers of batteries and / or battery modules ina battery pack, a battery pack housing, a liquid cooling plate-tube heat exchanger, and an external air cooling module, the internal of the external air cooling module is provided with air cooling fins, and the side surface of the external air cooling module is provided with a fan; a micro heat pipe array is attached to the upper surface and / or the lower surface of the battery and / or the batterymodule, the part attached to the surface of the battery and / or the battery module is an evaporation section, and at least one end of the micro heat pipe array extends out of the surface of the batteryand / or the battery module to serve as a condensation section to be attached to a battery pack shell. The battery pack shell is at least provided with a heat conduction partition plate at the positioncorresponding to the condensation section; the liquid cooling plate-tube heat exchanger is at least correspondingly attached to the outer surface of the heat conduction partition plate and connectedwith a refrigerating system outside the battery pack, and a base plate of the external air cooling module is attached to the outer side of the liquid cooling plate-tube heat exchanger. And the advantages of high heat dissipation efficiency, safety, energy conservation and the like are achieved.

The invention relates to a switchgear cabinet which comprises a cabinet body. The top of the cabinet body is provided with a busbar bridge seat to be connected to a busbar bridge pipeline. The busbarbridge seat is a box structure one side of which is provided with a docking area for docking the busbar bridge pipeline. The docking area is provided with a wall bushing for docking. The bottom surface of the busbar bridge seat and the top surface of the cabinet body are provided with communication ports through which the busbar passes, or either the bottom surface of the busbar bridge seat or thetop surface of the cabinet body is provided with an into-cabinet wall bushing to be connected to the busbar. Since one side of the busbar bridge seat is provided with the wall bushing for docking. The busbar can be introduced into the switchgear cabinet through the busbar bridge seat. The busbar bridge seat can be prefabricated. The busbar bridge seat can be directly connected with the switchgearcabinet at a construction site. Therefore, the amount of field construction is reduced, the construction efficiency is improved, and the problem in the prior art is solved that the busbar bridge pipeline is difficult to machine and inconvenient to install on the site.

The invention provides a miniature fuse type isolating switch, which comprises a plurality of contacts arranged on a base, an elastic contact part capable of being clamped with a fusible core being arranged at one end of each contact, the other end of each contact being connected with a wiring terminal, and a first partition plate being arranged between every two adjacent wiring terminals; and a second partition plate, arranged between the two adjacent contacts, the left end surface of the second partition plate exceeding the elastic contact part, and the right end surface of the second partition plate extending into an inner cavity formed by the two adjacent first partition plates. By lengthening the end faces of the two sides of the second partition plate, the creepage distance and the electrical gap between every two adjacent contacts are increased, then the rated stamping withstand voltage and the rated insulation voltage of the product are improved, and the use requirements of customers in some special occasions are met.

The invention relates to a high-efficiency heat radiation structure for a photovoltaic power generation prefabricated substation. A protection casing of the photovoltaic power generation prefabricated substation is a casing, wherein the casing comprises a framework (2) and a casing cover (1), wherein the casing cover is a liftable casing cover, a jacking and fixing device is arranged between the liftable casing cover and the framework, for the jacking and fixing device, an upper inner side of the casing framework and a corresponding bottom inner side of the casing cover are fixed with a lower horizontal hole board and an upper horizontal hole board, a space capable of accommodating a jack is arranged between the lower horizontal hole board and the upper horizontal hole board, vertical holes of the lower horizontal hole board and the upper horizontal hole board correspond mutually, connection bolts of sheath positioning supporting circular pipes penetrate through the vertical holes of the lower horizontal hole board and the upper horizontal hole board and are then screwed with nuts, four edges of the casing cover are fixed with rain shield baffle board modules, and four corners at a top portion of the casing cover are provided with rotary pull type rain shield baffle boards. The high-efficiency heat radiation structure is advantaged in that the structure is compact, high transportation requirements are satisfied, heat radiation efficiency during operation is high, operation is simple and convenient, strong applicability and high reliability are realized, and modular production application is realized.

The invention discloses a high-protection-level air-cooled lithium battery pack thermal management system and method. The system comprises one or more layers of batteries and / or battery modules in thebattery pack, a battery pack shell and an external air cooling module, wherein the battery and / or the upper surface and / or the lower surface are / is attached to a micro heat pipe array, the part attached to the surface of the battery and / or the battery module is an evaporation section, at least one end of the micro heat pipe array extends out of the surface of the battery and / or the battery module, and the extending part serves as a condensation section to be attached to a battery pack shell; the battery pack shell surrounds the battery pack and is of a closed structure, and at least the position, corresponding to the condensation section, of the battery pack shell is provided with a heat conduction partition plate; the external air cooling module is tightly attached to the outer surface of the face, provided with the heat conduction partition plate, of the battery pack shell, air cooling fins are arranged in the external air cooling module, and a fan is arranged on the side face of the external air cooling module. The heat dissipation efficiency is high, the risk of liquid pollution is avoided, and the protection level is high.

The invention discloses a lamp comprising a shell and a rotary mechanism arranged outside the shell. The rotary mechanism comprises a columnar fixed part, a support, a screw and a nut. The fixed part is fixed on the outer wall of the shell and has no effects on sealing and waterproofing performance of the shell since holes are not needed to drill in the shell, and protection level of the lamp is guaranteed. The circumference of the fixed part is provided with a neck, and the nut is arranged in the neck and can be conveniently replaced with a new one in case of failure. The end face of the fixed part is provided with a connecting hole. The support comprises a first support plate and a second support plate which are fixedly connected, the second support plate is provided with a through hole, and the screw sequentially penetrates the through hole and the connecting hole to be in threaded connection with the nut. The shell and the fixed part rotate by taking the screw as a rotary shaft, so that light emitting angle is adjusted, and rotation function of the lamp is realized. The circumference of the fixed part is provided with limit projections, and the first support plate is provided with a limit part. The shell is prevented from rotating by 360 degrees to wind inlet wires of the lamp off by matching of the limit projections and the limit part.

The invention discloses a dry-wet separated lithium battery pack thermal management system and method. The system comprises one or more layers of batteries and / or battery modules in the battery pack,a battery pack shell and a liquid cooling plate-tube heat exchanger, wherein a micro heat pipe array is attached to the upper surface and / or the lower surface of the battery and / or the battery module,the part attached to the surface of the battery and / or the battery module is an evaporation section, at least one end of the micro heat pipe array extends out of the surface of the battery and / or thebattery module, and the extending part serves as a condensation section to be attached to a battery pack shell; the battery pack shell surrounds the battery pack and is of a closed structure, and a heat conduction partition plate is at least arranged at the position corresponding to the condensation section; a substrate of the liquid cooling plate-tube heat exchanger is sealed and is completely physically isolated from the battery and / or the battery module; and the liquid cooling plate-tube heat exchanger is at least correspondingly attached to the outer surface of the heat conducting partition plate and is connected with a refrigerating system outside the battery pack. The system has the advantages of high heat dissipation efficiency, dry-wet separation and liquid leakage prevention.

The invention relates to an electrical cabinet with an air flow circulating device, include a plate shell, vertical beam, Fan, air inlet cover, the plate and shell are arranged on the outside of the frame composed of the cross beam and the vertical beam to form a sealed cabinet body, The vertical beam and the cross beam are both hollow structures, and are provided with an installation hole and anair outlet hole. The fan is arranged on the upper part of the cabinet body. The air outlet of the fan sucking hot air from the cabinet is connected with the air inlet of the air inlet cover, and the air outlet of the air inlet cover is communicated with the hollow channel of the vertical beam from the upper part of the vertical beam. The invention introduces the hot air in the fan suction cabinetinto the vertical beam through the air inlet cover, An air duct is formed in the inside of the cabinet to realize circulating flow inside the cabinet, and hot air is exchanged with the outside througha metal plate and shell, so that special heat exchange equipment is not required to be added, and the external air of the cabinet body is not required to be sucked into the cabinet body to meet the heat dissipation effect, and the protection level of the cabinet body is ensured.

A safe and reliable high voltage switch cabinet comprises a cabinet body. The inner portion of the cabinet body is divided into a meter cabinet, a handcart cabinet, a bus cabinet and a cable cabinet by separating boards, wherein the meter cabinet and the handcart cabinet are located on the front side of the cabinet body, the bus cabinet and the cable cabinet are located on the back side of the cabinet body, a dry type transformer is arranged in the cable cabinet, a plastic housing switch which is in a series connection with an output line of the dry type transformer is disposed in the cable cabinet, an operation window which is opposite to the plastic housing switch is mounted on a cabinet door of the cable cabinet, and a protective door capable of being opened is arranged at a position of the operation window. The safe and reliable high voltage switch cabinet has the advantages of being simple in structure, convenient to operate, safe, reliable and the like.

The invention belongs to the technical field of cable joints, and particularly relates to a disc cabinet cable sealing joint, a main body structure comprises an inner sealing ring and an outer sealing ring connected with the inner sealing ring through a threaded pipe, and the disc cabinet cable sealing joint comprises the inner sealing ring, the threaded pipe, the outer sealing ring, an interface and a through hole, an interface is arranged in the center of the inner sealing ring, a through hole is formed in the center of the outer sealing ring, a novel and reasonable double-film sealing structure is adopted, after a cable penetrates in from the interface and penetrates out from the through hole, the interface and the through hole are tightly attached to the cable based on the specific self-tightening characteristic of TPU (thermoplastic polyurethane elastomer) materials, and the cable sealing device has double protection levels and is convenient to use. The sealing performance and the waterproof and dustproof performance are guaranteed, the threaded pipe of a multi-ring structure is suitable for plate cabinet box bodies of various thicknesses, and the protection level of the connecting position of the threaded pipe and the box body can be guaranteed; the structure is simple, the installation is convenient, the threading is convenient, the wiring cost is reduced, and the waterproof and dustproof effects of the plate cabinet are improved.

The invention provides a battery heat management system and method. The system comprises a first heat exchange module, a second heat exchange module and a flow guide air duct, wherein the flow guide air duct comprises a top layer flow guide air duct, a bottom layer flow guide air duct, a first connecting air duct, a second connecting air duct, a third connecting air duct and a fourth connecting air duct; the first heat exchange module is connected with the top layer flow guide air duct and the bottom layer flow guide air duct respectively through the first connecting air duct and the second connecting air duct, and the second heat exchange module is connected with the top layer flow guide air duct and the bottom layer flow guide air duct respectively through the third connecting air duct and the fourth connecting air duct, so that a sealed whole body is formed by the first heat exchange module, the second heat exchange module and the flow guide air duct. According to the system, the protection level of the battery system can be guaranteed, efficient air-cooling heat dissipation is carried out on the battery system, and then the service life of a battery is effectively prolonged, and the work efficiency of the battery is improved.

The invention provides a distribution box which is convenient for removing foreign matters, and relates to a distribution box. It solves the problem of removing foreign objects in the distribution box in the prior art. The distribution box for easy removal of foreign matter includes a box body, a sewage discharge hole is arranged on the bottom plate of the box body, and a cover plate is arranged on the sewage discharge hole, and the edge of the cover plate is connected to the sewage discharge hole through a rivet rotation. edge of the hole, the cover plate is located inside the box. The invention can open the hole by setting the rotating cover plate, and the foreign matter can fall from the hole, which not only ensures the protection level of the distribution box, but also can remove the foreign matter conveniently. Another type of distribution box can realize the discharge of sundries at the bottom of the box without opening the box. The structure is simple, the operation is convenient, the cost is low, and the efficiency can be greatly improved.