137 results about "Electrical Shorting" patented technology

The invention relates to the technical field of power distribution cabinets, and discloses a power distribution cabinet with a self-adaptive environment adjusting mechanism, and the power distribution cabinet comprises a cabinet body which is used for fixing and supporting internal electrical elements; the automatic dehumidification assembly is mounted on the outer side of the cabinet body and is used for dehumidifying the cabinet body when detecting that the moisture content in the cabinet body is too high; the cleaning assembly is installed on one side of the cabinet body and used for conducting anti-blocking treatment on a filter screen arranged outside the cabinet body, and the driving assembly is installed outside the cleaning assembly and used for driving the cleaning assembly. By adding the automatic dehumidification assembly, the humidity in the power distribution cabinet can be effectively reduced, and the risk of electrical short circuit caused by a humid environment is reduced. By discharging moisture, safe operation of electrical equipment is guaranteed, and fire and electric shock accidents caused by moisture are avoided. And meanwhile, corrosion and aging processes can be slowed down, the service lives of the power distribution cabinet and internal components are remarkably prolonged, and the maintenance and replacement cost is reduced.

The invention relates to the technical field of chip heat dissipation, and provides an immersed heat dissipation system with liquid nitrogen as a cooling medium and an integrated circuit assembly. In an immersed heat dissipation system with liquid nitrogen as a cooling medium, huge heat generated by a high-power-density chip under an extreme working condition can be efficiently absorbed and taken away under the extremely low working temperature and the large phase change heat absorption capacity, the heat transfer limit of a traditional cooling technology is broken through, and deep cooling of the chip is achieved; meanwhile, the liquid nitrogen is non-conductive and stable in chemical property, the electrical short circuit risk and physical and chemical corrosion problems caused by leakage of the cooling working medium are thoroughly eliminated, and the long-term operation reliability and safety of the immersed heat dissipation system with the liquid nitrogen as the cooling medium are remarkably improved. Therefore, stable operation of the chip under high load is guaranteed, physical damage and performance frequency reduction caused by overheating are avoided, and even favorable conditions are created for safe and efficient operation of the chip under higher working frequency.

The utility model relates to a wiring terminal, and relates to the technical field of cable fittings, the wiring terminal comprises a wiring part, one end of the wiring part is connected with a mounting part, the other end is provided with a wiring hole for wiring, the wiring part is provided with a welding ring groove at one side of the opening of the wiring hole, and the welding ring groove is communicated with the wiring hole. An opening of the welding ring groove is larger than an opening of the wiring hole, a welding ring is arranged in the welding ring groove, and the inner diameter of the welding ring is larger than or equal to the inner diameter of the wiring hole. Through the arrangement of the welding ring, after a wire is installed in the wiring hole, a worker can further fix the joint part of the wire to the end part of the wiring part through the welding ring, and meanwhile, the molten welding ring can block the joint part, so that the joint part of the wire can be better protected, and meanwhile, the entering of water vapor can be reduced; and contact resistance increase and electrical short circuit accidents caused by oxidation after the wire is in contact with air are prevented.

The invention discloses a three-phase dry-type transformer which comprises a base, an iron core, a lower clamping piece, an upper clamping piece, a pulling plate, a clamping screw rod, a nut, a low-voltage coil winding, a high-voltage coil winding, an insulating damping block, a high-voltage connecting lead, a low-voltage outlet copper bar, a high-voltage outlet terminal, a temperature sensor and an industrial router. An epoxy resin insulating cylinder is embedded in the inner circumferential wall of each of the low-voltage coil winding and the high-voltage coil winding, the temperature sensors are arranged on the low-voltage coil winding and the high-voltage coil winding, the temperature sensors are electrically connected with the industrial router, and the industrial router is in data connection with the rear-end management platform. According to the technical scheme, the insulation performance of the transformer can be effectively improved, electrical short circuit and electric leakage are prevented, efficient, safe and reliable electric energy conversion is achieved, high efficiency, low loss and good heat dissipation performance are achieved, temperature monitoring and early warning of the coil winding of the transformer can be achieved through the temperature sensor, and the service life of the transformer is prolonged. And the safety and the reliability of the transformer are improved.

The invention relates to the technical field of busbars, and discloses a multi-layer composite fire-resistant shielding busbar and a preparation method thereof, and the multi-layer composite fire-resistant shielding busbar comprises a conductor layer, a fire-resistant layer, a shielding layer and a sheath layer which are sequentially coated from inside to outside; wherein the conductor layer is made of copper or aluminum; the fireproof layer wraps the conductor layer and is formed by wrapping a double-layer PI three-in-one synthetic mica tape. According to the multi-layer composite fire-resistant shielding busbar and the preparation method thereof, the double-layer PI three-in-one synthetic mica tape is used for wrapping, a stable fire-resistant insulation structure is formed outside the conductor layer in a reverse wrapping mode that the first layer is clockwise and the second layer is anticlockwise, and the mica tape is formed by combining phlogopite paper and an organic silicon resin adhesive capable of resisting the temperature of 300 DEG C; the structural integrity can be maintained under the fire high-temperature condition, and electrical short circuit caused by thermal failure is effectively prevented; and meanwhile, the mica tape adhesive layer permeates into the micro-groove structure arranged on the surface of the conductor in the thermocuring process, so that the mechanical occlusion strength is further enhanced.

Aspects disclosed include an integrated circuit (IC) package including two substrates and vertical interconnects coupling the two substrates, the vertical interconnects comprising a metal ball and metal pin combination to address an increased distance between substrates. The vertical interconnects are disposed in a mold layer between the two substrates. The mold layer also includes a die, a plurality of metal pins, and a plurality of metal balls coupled to the plurality of metal pins to form the vertical interconnects. Larger distances between the two substrates are desirable when a die's thickness is increased to increase thermal dissipation from the die. As an example, by utilizing a plurality of metal ball and pin combinations as vertical interconnects, larger distances between the two substrates may be advantageously achieved with reduced risk of electrical shorting between vertical interconnects and without compromising pitch between vertical interconnects.

The invention relates to the technical field of material microscopic analysis, and particularly discloses an aluminum conductor electrical melting mark identification method based on electron back scattering diffraction. Aiming at the core defects that the existing aluminum melting mark identification technology depends on morphological characteristic analysis and cannot distinguish short-circuit melting and fire thermal damage, the invention innovatively proposes the following steps: (1) obtaining a three-dimensional crystallographic parameter group of a grain size distribution discrete coefficient (DSC), a high-angle grain boundary (HAGBgt; 15 degrees) proportion and a cubic texture strength proportion of a melting mark area through EBSD scanning; (2) a melting mark classification model based on a random forest algorithm is constructed, quantitative distinguishing of electrical short circuit melting marks (DSCgt, 0.8, Cube% lt, 15%) and fire disaster hot melting marks (DSClt, 0.5, Cube% gt, 40%) is achieved, and the classification accuracy rate reaches 98.2%. And surface amorphous layer interference is further eliminated through argon ion polishing pretreatment (with an inclination angle of 3-5 degrees for 18 min), so that the signal-to-noise ratio of the EBSD Kikuchi pattern quality map is increased by 3 times. According to the invention, the technical problem of poor objectivity of melting mark type judgment is solved, and a high-precision analysis tool is provided for electrical fire evidence identification.

The utility model discloses a composite protection intelligent cable for mountain rail transit, which belongs to the technical field of cables and comprises a circular copper conductor, and a conductor semi-conductive shielding layer, an insulating layer, an insulating semi-conductive shielding layer and a semi-conductive water-blocking buffer layer are sequentially arranged outside the circular copper conductor. A metal shielding layer is arranged in the semi-conductive water-blocking buffer layer, and a waterproof layer, an oxygen barrier layer, an armor layer, an alkali-free glass fiber tape wrapping layer, an outer sheath layer and a composite sheath layer are sequentially arranged outside the semi-conductive water-blocking buffer layer; and a temperature measuring and communication optical cable is arranged in the metal shielding layer. The 35kV flame-retardant B1-level composite protection intelligent cable for mountain rail transit has wear-resistant, rat-proof, termite-proof and ultraviolet-proof additional performance, a temperature-sensing detection optical cable is arranged on a metal shielding layer, the whole line is effectively monitored, management of a master console is matched, when the temperature exceeds the set temperature, automatic alarm, power-off protection and line switching are achieved, and the service life of the cable is prolonged. Fire situations such as electrical short circuit are avoided, and safe and reliable operation of rail transit lines is guaranteed.

This utility model discloses a two-phase flow cooling chassis for airborne electronic equipment, including a chassis body. The chassis body includes a front insertion processing module, a lower cooling plate, a right side cooling plate, an upper cooling plate, a left side cooling plate, and a rear insertion interface module. The front insertion processing module and the rear insertion interface module are located on the front and back of the chassis, respectively. The upper and lower cooling plates are located at the top and bottom of the chassis, respectively. The left and right side cooling plates are located on both sides of the chassis. Microchannels are added to the cooling channels corresponding to electronic modules with high and concentrated heat generation to increase the effective contact area between the refrigerant and the heat dissipation surface within the cooling channels, and to increase the turbulence during the refrigerant flow process to enhance heat dissipation. The refrigerant absorbs a large amount of heat during the transition from liquid to gas phase and flows out of the chassis, thereby significantly improving the heat dissipation performance of the chassis and reducing the risk of electrical short circuits and damage to electrical equipment.

The invention relates to the field of diode production and processing, in particular to press-fitting quality optimization design of a diode in the press-fitting process. According to the press-fitting system and method suitable for the laser diode, the direction of the diode is adjusted in real time before press-fitting through the integrated automatic overturning design, efficiency is improved, failure modes such as electrical short circuit, optical imbalance and poor heat dissipation caused by direction errors are effectively avoided, and the service life of the laser diode is prolonged. And high precision and high reliability of the laser press fitting process are guaranteed.

A pollution monitoring sensor system for monitoring the contamination of a high-power electricity device against overheating and electrical short circuits is disclosed. The system 1 comprises a casin

A method and apparatus are disclosed for an integrated circuit having a high voltage tub including a buried layer of a first conductivity type formed in a substrate of a second conductivity type, a central region of the first conductivity type formed in the substrate in contact with the buried layer, a first floating isolation trench formed in the substrate to surround the central region and to extend down to and surround the buried layer, a second floating isolation trench formed in the substrate around the first isolation trench, a shallow ring region of the first conductivity type formed in the substrate between the first floating isolation trench and the second floating isolation trench, a first conductive interconnect structure for electrically shorting the central region to the shallow ring region, and a second conductive interconnect structure for electrically shorting the first floating isolation trench to the second floating isolation trench.

The drilling device, the power distribution cabinet drilling equipment and the drilling method are applied to the field of power distribution cabinet machining, and the drilling device comprises a trepanning mechanism and a collecting mechanism which are oppositely arranged; the trepanning mechanism is provided with a first adsorption part, and the collecting mechanism is provided with a second adsorption part matched with the first adsorption part; the distribution positions of the first adsorption pieces are arranged on one side of a to-be-perforated area of a target power distribution cabinet, and the number of the first adsorption pieces is designed to be that when the perforating mechanism and the collecting mechanism are connected to the to-be-perforated area, deformation generated by the to-be-perforated area is matched with stress of the to-be-perforated area; the second adsorption piece is arranged on the other side, corresponding to the first adsorption piece, of the to-be-perforated area. Through cooperative work of the tapping mechanism and the collecting mechanism, pollution to the internal environment of the power distribution cabinet due to chipping scattering is avoided, potential safety hazards such as electrical short circuit caused by chippings are eliminated, and the safety of installation and maintenance of the power distribution cabinet is remarkably improved.

A warp stop frame with a water-blocking function belongs to the technical field of shuttleless loom accessories. It includes a warp stop frame assembly, and its characteristics are: it also includes a water-blocking curtain mechanism, the lower part of which is fixed to one side of the length direction of the warp stop frame assembly, and the upper part of which extends upwardly away from the side of the length direction of the warp stop frame assembly. Since the water-blocking curtain mechanism is arranged on the side corresponding to the length direction of the warp stop frame assembly, the water-blocking curtain mechanism plays a water-blocking role, so that the warp stop frame assembly has a good water-blocking effect, avoiding water splashing of the water jet loom and the warp stop frame assembly causing an electrical short circuit of the warp stop frame assembly and further causing an abnormal shutdown of the water jet loom; since the water is blocked by the water-blocking curtain mechanism, the normal warp-breaking response effect of the warp stop frame assembly is guaranteed, the requirements for weaving high-grade fabrics by the water jet loom are met, and the added value of the products woven by the water jet loom is improved.

The invention discloses a capacitor compensation cabinet with an isolation bus chamber, and belongs to the technical field of capacitor compensation cabinets. The cabinet door is hinged to the front surface of the cabinet body; a cooling pipe A and a cooling pipe B are arranged in the cabinet body; and a ventilation opening is formed in one side of the cabinet door. The dual functions of efficient heat dissipation and automatic condensate water removal are achieved through mechanical linkage. Firstly, the double cooling design of the cooling pipe A and the cooling pipe B remarkably reduces the temperature of air entering the cabinet body, meanwhile, power of the draught fan is converted into reciprocating motion of the scraping ring and the scraping plate through worm and gear transmission, condensate water on the outer walls of the cooling pipes is automatically scraped off, and electrical short circuit or element corrosion caused by dripping of water drops is effectively prevented. And secondly, the air flow distribution is optimized by the air expansion cover, the heat dissipation uniformity is ensured, the directional collection and discharge of the condensate water are realized by the inclined collection frame and the bottom water outlet, and corrosion or mould breeding caused by accumulated water is avoided.

The discharge adapter comprises a gun body, a gun head unit is arranged at one end of the gun body, a socket unit is arranged at the other end of the gun body, the socket unit comprises a panel, a plug bush and a pressing plate, a mounting groove is formed in the back face of the panel, and a limiting block is arranged in the mounting groove; the pressing plate is fixed at the notch of the mounting groove, the plug bush is clamped between the limiting block and the pressing plate, and the plug bush is connected with the pin through a wire; a first sealing layer is arranged between the pressing plate and the plug bush, and a second sealing layer is arranged on the side, away from the first sealing layer, of the pressing plate. The plug bush is clamped between the limiting block and the pressing plate, so that the plug bush is quickly positioned and fixed, the assembly process of the socket unit is obviously simplified, and the production efficiency is improved; and rainwater or moisture can be effectively prevented from permeating through a double-sealing structure, the potential safety hazard of electrical short circuit in a humid environment is solved, and the reliability and the safety of the product in outdoor use are greatly improved.

The utility model discloses a double-layer suspended assembly fixing structure, which relates to the technical field of electrical installation, and adopts the technical scheme that the double-layer suspended assembly fixing structure comprises an installation seat, and a plurality of assembly components are arranged on one side of the installation seat; the assembling assembly comprises a supporting column, the supporting column is arranged on one side of the mounting base, a first thread sleeve is fixedly arranged at the top of the supporting column, a first hexagonal nut is arranged outside the first thread sleeve through a thread sleeve, a second thread sleeve is fixedly arranged on one side of the first hexagonal nut, a second hexagonal nut is arranged outside the second thread sleeve through a thread sleeve, and a long bolt is arranged on one side of the second hexagonal nut. The device has the beneficial effects that by adjusting the height of the second hexagonal nut, the safe distance between the conductive plate and the non-conductive plate can be accurately controlled, electrical short circuit is effectively prevented, the overall safety of a system is improved, and the design of a slot and a movable plate on the non-conductive plate is more convenient to use. Therefore, the connection port is more convenient to install and fix, and the assembly difficulty is reduced.

The utility model discloses a battery frame, battery pack and vehicle, battery frame includes frame and be provided a plurality of beam body in the frame, the plurality of beam body is arranged along the interval of first direction, the frame and the plurality of beam body together define a plurality of holding cavity that the battery cell is held, the beam body is provided with first exhaust chamber, the first exhaust chamber is provided with second exhaust chamber, the beam body is provided with second exhaust chamber. The side face, opposite to the first direction, in the beam body is provided with receding holes communicated with the first exhaust cavities, the receding holes correspond to first anti-explosion valves in the battery cells contained in the containing cavities in a one-to-one mode and are oppositely arranged, the frame is provided with a second exhaust cavity, and the second exhaust cavity is communicated with all the first exhaust cavities. And a second anti-explosion valve communicated with the second exhaust cavity is mounted on the peripheral surface of the frame. The battery frame provided by the utility model effectively prevents high-temperature gas generated during thermal runaway of the battery cell from entering the areas where the high-low voltage copper bars and the wire harnesses are located, and further has the advantages of low electrical short circuit and arcing risks and low thermal diffusion risk.

The invention relates to the technical field of circuit detection, and discloses a low-voltage transformer area electrical short circuit arc detection processing method and system. According to the invention, aiming at the condition that the current abnormity duration is relatively long, even if the voltage and the frequency spectrum do not display typical arc signals, the abnormal conduction state can be confirmed by strictly comparing the time when the current exceeds the normal range, so that misjudgment caused by instantaneous interference is avoided. It is worthy of noticing that due to the fact that the temperature sensor has the problems of response lag and uneven area distribution when monitoring the electric arc, when continuous high current does not have sudden temperature increase and voltage and frequency spectrum abnormity, it is directly judged that the electric arc is not generated, and the processing strategy effectively prevents unnecessary protection actions caused by temperature errors. The advantages of various sensing data are fully integrated, and through a layer-by-layer verification and mutual evidence mode, the short circuit hidden danger can be found in time, and the reliability of fault judgment and the overall safety of the system can be remarkably improved.

A cable termination that helps prevent unwanted, inadvertent electrical shorting between a signal conductor and a cable ground shield, cable serve shield, or cable reference shield of a cable, such as a coaxial or twin axial cable.

An apparatus for testing a semiconductor package, in which a second test circuit board, which is disposed on an upper socket assembly to form a vacuum line in the related art, is removed, and a vacuum guide including two components disposed between an upper socket and an upper package. The vacuum guide including a conductive guide member made of an inelastic insulating material disposed on a conductive region part to prevent an electrical short circuit, and a peripheral guide member made of a metallic material having rigidity and disposed on a peripheral region portion to prevent deformation of a vacuum line, such that a length of a signal path is significantly decreased, high-speed signal transmission is possible. The stable vacuum line is ensured in the upper socket assembly, and vacuum pressure from a vacuum generation device is smoothly applied to a vacuum picker.

To provide methods and systems of detecting short circuits in an electrical system, such as a dynamic braking grid of a vehicle.SOLUTION: The methods and systems measure a characteristic of an electrical current that is conducted through one or more resistive elements of an electrical system 104. The electrical current is supplied to the electrical system from a power source 102 as an applied voltage. A resistance change signal representative of a change in one or more electrical resistances of the one or more resistive elements is determined. The resistance change signal is based at least in part on a difference between the characteristic of the electrical current that is measured and a low pass filtered value of one or more of the characteristic of the electrical current that is measured or the applied voltage supplied by the power source. A short circuit event is identified based at least in part on the resistance change signal.SELECTED DRAWING: Figure 1

A method is proposed for simulating and analysing at least one electrical short-circuit in an electrical wiring interconnection system (EWIS) for a vehicle. The result is a report concerning the safety of the EWIS that lists, for a selected modelled pathway (on which at least one short-circuit is simulated), any functional information associated with one or more modelled pathways affected by the at least one simulated short-circuit. A method is also proposed for designing and manufacturing the EWIS that is based on the simulation and analysis method. This assists the manufacturer in confirming the compliance of the EWIS (notably the spaces between the cable paths, in order to avoid any risks of short-circuits thereon) as early as possible in the process for designing and manufacturing this system.

To provide an electrode for an electrolytic polishing device, which enables efficient removal of burnt parts and formation of a passivation film even in places where it is difficult to adhere the electrode to curved surfaces or the like. [Solution] An electrode (11) for an electrolytic polishing apparatus used in an electrolytic polishing apparatus in which an electrode and a welded stainless steel product are placed relative to each other, and an electric short-circuit prevention material with water retention properties that covers the electrode and an electrolyte layer are interposed between the two to electrolyze, thereby removing weld burns and cleaning the stainless steel through electrochemical action. The electrode (11) is characterized in that it comprises an electrode core (20) made of flexible or elastic conductive carbon fiber material or metal member, either alone or in combination, and an electric short-circuit prevention material (30) that is flexible and has water retention properties and covers the electrode core (20) so that it is not exposed, the electric short-circuit prevention material (30) and the electrode core (20) are arranged to form an alternately stacked state, and the electric short-circuit prevention material (30) has a diaphragm-forming effect.

The application provides a water-cooled grinding wheel, and belongs to the technical field of grinding wheels, to solve the problems of direct water pouring and water cooling in the prior art, which can easily cause electrical short circuit and a high humidity working environment. The water-cooled grinding wheel comprises a grinding wheel disc body, an inner through hole is arranged in the middle of the grinding wheel disc body, a plurality of cooling flow channels are arranged along the radial direction of the grinding wheel disc body, an inner flow channel snap ring and an outer flow channel snap ring installed on the outer periphery of the grinding wheel disc body are arranged on the inner through hole, the inner flow channel snap ring is provided with a second flow channel, the outer flow channel snap ring is provided with a first flow channel, the two ends of the cooling flow channel are respectively communicated with the first flow channel and the second flow channel, and the outer periphery of the outer flow channel snap ring is provided with a grinding wheel body; an outer pipe body and an inner pipe body, one end of the outer pipe body is communicated with the first flow channel, and one end of the inner pipe body is communicated with the second flow channel; an outer current collecting ring, the other end of the outer pipe body is communicated with the outer current collecting ring; and an inner current collecting ring, the other end of the inner pipe body is communicated with the inner current collecting ring.

The utility model relates to the field of alternating-current vacuum contactors, in particular to an alternating-current vacuum contactor wiring terminal structure capable of preventing mechanical jamming, which comprises a wiring board. The wiring grooves are formed in the wiring boards and used for wiring terminals, and the wiring boards are installed on the two sides of the alternating current vacuum contactor body. According to the alternating current vacuum contactor wiring terminal structure capable of preventing mechanical jamming, the wiring board, the wiring groove, the dustproof assembly and the fixing mechanism are arranged, so that the wiring terminal can be effectively isolated from the surrounding environment to a certain extent, dust, particles and other metal parts are effectively prevented from falling into the wiring terminal structure, and the service life of the wiring terminal structure is prolonged. The terminal is connected with the wiring groove in the wiring board, then the dustproof cover is turned over on one side of the wiring board, a clamping block at one end of the dustproof cover is inserted into a clamping groove in one side of the wiring board for limiting connection, and a plurality of dustproof sheets are arranged at an opening of the dustproof cover, so that dust and other metal can be blocked; according to the design, the risks of electrical short circuit and mechanical jamming are reduced to a great extent.

The utility model discloses a copper bar protection assembly and a battery pack, the copper bar protection assembly comprises a first protection piece, the first protection piece is arranged on a first bar body, a first accommodating cavity is formed in the first protection piece, and a conductive column of the first bar body is located in the first accommodating cavity; the first protection part is arranged on the first row body, the second protection part is arranged on the second row body, a second containing cavity is formed in the second protection part, the conductive columns of the second row body are located in the second containing cavity, and the first protection part is connected with the second protection part in a clamped mode. According to the copper bar protection assembly, the copper bar protection assembly is arranged on the copper bar, so that electrical short circuit can be prevented, the copper bar is prevented from being affected by physical damage, moisture, dust and the like, the safety and the stability of the copper bar are improved, the damage risk of the copper bar is reduced, and the copper bar protection assembly is simple and reliable in structure and convenient to disassemble and assemble.

The utility model discloses a humidity-adjusting explosion-proof valve in the field of explosion-proof valves, which comprises a valve body, a protective cover and a fixed seat, the valve body is provided with a guide rod penetrating through the valve body and a spring arranged between the guide rod and the valve body, the spring is used for providing elastic force for the guide rod along the direction of the valve body all the time, a through hole is arranged in the fixed seat, and the through hole is communicated with the guide rod. The fixing base is provided with a first containing cavity and a second containing cavity with upward openings, the first containing cavity is communicated with the second containing cavity, the second containing cavity is communicated with the through hole, and a breathable film used for blocking the through hole is arranged in the first containing cavity. A humidity adjusting piece used for blocking the through hole is arranged in the second containing cavity. According to the humidity-adjusting explosion-proof valve disclosed by the utility model, external moisture is effectively prevented from entering through the laminated arrangement of the breathable film and the humidity-adjusting sheet, internal moisture is absorbed through the humidity-adjusting sheet, the external moisture is blocked bidirectionally through the breathable film, and faults such as electrical short circuit and the like in a battery pack and a box caused by a water condensation phenomenon are prevented.

The present invention provides a battery module that can prevent the spread of fire and electrical short circuit caused by condensation when a fire occurs. To achieve the above object, the battery module includes: a battery cell assembly, the battery cell assembly includes a plurality of battery cells; a front cover, the front cover includes a top wall, a bottom wall, a left wall, and a right wall forming an internal space; and a module housing, when the battery cell assembly is accommodated in the internal space, the module housing is coupled to the front cover, and the module housing includes a cover portion, the cover portion protruding so that a portion of the cover portion faces at least one of the top wall, the bottom wall, the left wall, and the right wall.

The protection structure comprises a bottom plate and the anti-explosion dehumidifier arranged at the top of the bottom plate, an air outlet and a heat dissipation opening are formed in the front side and the rear side of the anti-explosion dehumidifier respectively, a rotating shaft is rotationally connected to the middle of the bottom plate, and the anti-explosion dehumidifier is fixedly connected to the top end of the rotating shaft. Two sealing plates are symmetrically and slidably connected to the top of the bottom plate and located on the two sides of the anti-explosion dehumidifier, sealing rings are installed on the opposite sides of the sealing plates, a control assembly is further arranged in the bottom plate and located on one side of the rotating shaft, and the control assembly is used for driving the sealing plates to move in the opposite directions or away from each other. By means of the structure, the sealing plate is arranged, when the dehumidifier stops running, the sealing plate can seal the air outlet and the heat dissipation opening, so that external flammable and explosive gas and the like are effectively prevented from entering the anti-explosion dehumidifier, the risk of explosion caused by sparks caused by electrical short circuit, overheating or static electricity and the like is reduced, and the service life of the dehumidifier is prolonged. And the use safety of the equipment in a flammable and explosive environment is ensured.