41results about How to "Guarantee the reliability of use" patented technology

The invention provides an aeroengine pipeline vibration testing device and an aeroengine pipeline vibration testing method. The aeroengine pipeline vibration testing device comprises a vibration excitation device, a pipeline clamping device and a vibration test analysis device, wherein the vibration excitation device is used for conducting vibrating excitation on an aeroengine pipeline; the pipeline clamping device is used for clamping the aeroengine pipeline and is connected with the vibration excitation device; and the vibration test analysis device is used for performing vibration signal detection analysis on the aeroengine pipeline during the vibration testing process. The aeroengine pipeline vibration testing device and the aeroengine pipeline vibration testing method realize the effect of simulating actual assembly condition of the engine pipeline, realizes the inherent frequency and dynamic stress tests of the pipeline under multi-order resonance excitation, and realize vibration stress monitoring and test analysis of key points of the pipeline under different assembly structures. The aeroengine pipeline vibration testing device and the aeroengine pipeline vibration testing method realize the multi-order resonance excitation of the engine pipeline in an integral assembly state by utilizing the vibration excitation device and the pipeline clamping device, realizes vibration response test and analysis of the aeroengine pipeline vibration under an adjustable assembly structure by utilizing the vibration test analysis device and an assembly position measuring device, and provide data support for optimizing pipeline assembly quality and verifying reasonability of piping assembly.

The invention provides a cooking device and a control method thereof, and relates to the technical field of kitchen electrical appliances. The cooking device comprises a device body with one side open, a door body covering the open end of the device body, a camera assembly and a driving assembly, wherein the device body is provided with an inner liner; the door body comprises a door frame, an inner door plate arranged in the door frame, and an outer door plate arranged in the door frame; the inner door plate and the outer door plate are arranged in a spaced manner; a cavity is formed between the inner door plate and the outer door plate; the inner door plate is made of a transparent material; the camera assembly is arranged in the cavity, and can shoot foods in the cooking cavity through the inner door plate; and the driving assembly is used for driving the camera assembly to ascend and descend so as to change the height of the camera assembly. Through adoption of the cooking device, the problems that the working reliability of a camera is adversely affected and early damage of the camera is caused easily since the camera is arranged in the cooking cavity and the cooking cavity hashigh temperature and high humidity and is often accompanied by oil fume, vapor and the like in the cooking device are relieved.

The invention discloses a full-digital proportion integration differentiation (PID) controlled light-emitting diode (LED) light source driver, comprising a control processing unit, a user interface unit, an LED driving unit, an LED light source and a power supply management unit, wherein the control processing unit comprises a central processing unit (CPU) processing system, a PID control system, a pulse-width modulation (PWM) system and a feedback information quantification system which are integrated in a single chip microcomputer; and an output end of the LED driving unit is connected with the feedback information quantification system of the control processing unit through a feedback sampling unit. In the practical application, compared with traditional light source driving scheme which is set up through an analogue integrated circuit, the full-digital PID controlled LED light source diver disclosed by the invention is greatly improved in stability, service life, economical efficiency, and convenience and effectiveness of size or control. In addition, the full-digital PID controlled LED light source diver conveniently performs quantification management, is easy to develop and strong in applicability, and has strong market competitiveness.

The invention belongs to the technical field of power communication, and provides a network communication control management method applied to a power industry. The method comprises the steps of acquiring a data packet download request; detecting the type of the data packet to e downloaded in the data packet download request; detecting a bandwidth occupancy rate of a current communication network;and determining a transmission state of the data packet to be downloaded according to the type or the bandwidth occupancy rate of the data packet to be downloaded. The method also comprises the stepsas follows: a network running data model is generated according to acquired network running data; the network running data model converts the network data into equipment identification data, and distributes the equipment identification data to specific network equipment; the running state of each network communication link is monitored in real time, and uploaded to the network running data model;and the network running data model determines a disconnected communication link according to the running state of the network, and recovers the disconnected communication link according to a networktopology state.

The invention provides a tissue clamping device for endoscope, comprising: a clamp with at least two clamp legs; a control line detachably connected to the perforation at the proximal end of the clamp; an axial sheath arranged around the control line; a sleeve detachably connected to the distal end of the axial sheath is used for accommodating the proximal end of the clamp; a retainer used to maintain the connection between the sleeve, and used to detach the axial sheath from the sleeve through the deformation of the retainer under the action of the control line; a control mechanism connectedto the proximal end of the axial sheath and the proximal end of the control line; and the control line can control at least two clamp legs of the clamp to open or close through the control mechanism.According to the invention, besides the function of rotating and multiple opening and closing, the tissue clamping device for endoscope has advantages of simplified structure, low cost in production and quality control, and the use stability and reliability of the tissue clamping device are guaranteed.

The invention provides a single-output-shaft hub-type DC brushless motor. The single-output-shaft hub-type DC brushless motor includes a rotor, a stator, a connection shaft, bearings, a Hall element, a Hall element mounting frame, an oil seal, a dustproof ring and an O-shaped seal ring. The rotor includes a first shell, a second shell and a steel magnet. The steel magnet is connected with a rim fixedly. The first shell includes the rim, spokes and a bearing sleeve, wherein the rim and the spokes are formed integrally. The Hall element mounting frame is fixed arranged on the stator. The Hall element is fixedly mounted on the Hall mounting frame. The connection shaft is a hollow shaft. According to the invention, the rotor is convenient in assembly, high in precision and good in adaptability. The single-output-shaft hub-type DC brushless motor is good in use safety and reliability and quick and convenient in maintenance and repair.

The invention discloses a laminar structure for a double-glass photovoltaic module. The laminar structure comprises a laminating lining cloth and a silica gel plate; the laminating lining cloth is used for loading the double-glass photovoltaic module; the silica gel plate is covered above the laminating lining cloth; a high-temperature cloth capable of synchronously moving following the silica gelplate is covered on the surface of the silica gel plate; a plurality of bar-shaped bulged filler strips vertical to a conveying direction are arranged on the high-temperature cloth at intervals alongthe conveying direction; the filler strips are respectively arranged on two sides of the double-glass photovoltaic module along the conveying direction; convex point-shaped cushion blocks are arranged on the high-temperature cloth; the cushion blocks are located on the two sides of the double-glass photovoltaic module vertical to the conveying direction; a plurality of cushion blocks are arrangedon the high-temperature cloth at intervals along the conveying direction. The laminar structure disclosed by the invention is capable of effectively supporting the silica gel plate at an edge of thedouble-glass photovoltaic module, avoiding overpressure at the edge of the double-glass photovoltaic module, avoiding deformation of upper-layer glass of the module, guaranteeing sealing property of the edge of the module and promoting laminating processing quality.

The invention discloses a method for preventing drop and hoisting of a single hanging ring. The method comprises the steps that a, a drop preventing mechanism of a system for preventing drop and hoisting of the single hanging ring is opened and made to be in an unlocking state; b, when one of the hanging rings is mounted in the position, on one side of an elevator, of a lug hole of a lifting lug, an induction part of a drop preventing part sends a signal, after receiving the signal, a controller forbids moving of a runner wagon, the runner wagon is in a stop state, and after the hanging ring enters the lug hole, the drop preventing mechanism is in a locking state, and the hanging ring is blocked in the lug hole; and c, and the other hanging ring is mounted in the position, on the other side of the elevator, inside the lug hole of the lifting lug, the induction part of the drop preventing part sends a signal, and after receiving the signal, the controller allows the runner wagon to move. It can be effectively guaranteed that the two hanging rings both enter the lug hole, so that single hanging ring hoisting is avoided. Through the joint effect of the drop preventing mechanism and the drop preventing part, the hanging rings can be blocked firmly in the lug hole, slipping is avoided, the working stability and reliability of the elevator are improved, and the safety accident is eradicated.

The invention relates to an inspection and judgment method, and in particular to a comprehensive high-performance bearing grinding burn inspection and judgment method. The invention is intended to solve the problem that the bearing track grinding burn inspection rate is low. The specific steps of the comprehensive high-performance bearing grinding burn inspection and judgment method are as follows: (Step 1) in the process of production, single acid is used for substituting for mixed acid to carry out bearing rim inspection; (Step 2) a burn map is made; (Step 3) a magnetoelastic instrument carries out grinding burn inspection on a finished part; (Step 4) physical and chemical analysis and judgment are carried out. The comprehensive high-performance bearing grinding burn inspection and judgment method belongs to thee field of bearing quality inspection.

The invention discloses a rotary lifting device, which belongs to the technical field of lifting opening and closing equipment, comprises a lifting appliance, and is characterized in that the lifting appliance comprises an upper lifting frame, a pulley shaft, a movable pulley block, a pin penetrating piece, a lifting head, a lower lifting frame, a lifting hook cross beam, a lifting hook nut, a rotary driving piece and a grabbing beam, the lifting head is fixed on the upper lifting frame through a pin penetrating piece, the lifting hook cross beam penetrates through the lifting hook nut and is arranged on the lower lifting frame, the lifting hook nut is connected with the lifting head, the rotary bearing is arranged between the lifting hook cross beam and the lifting hook nut, the rotary driving piece is arranged on the lower lifting frame, and the grabbing beam is connected with the lower lifting frame. The lifting appliance can synchronously and reversely rotate to ensure that the axis of a gate is always parallel to the axis of a gate groove, and the lifting appliance and the gate are prevented from shaking in the rotation process, so that the gate can be automatically and accurately positioned into the groove, the lifting precision and the lifting efficiency are improved, and the whole rotation lifting appliance is convenient to mount.

The invention discloses a new energy battery pack heat-conductive sealing material and a preparation method thereof and relates to the technical field of heat-conductive materials. The preparation method includes: 1) coating one side of a surface medium layer material with a surface treatment agent, slowly and uniformly roasting the material at 80-95 DEG C until the surface treatment agent is completely dried; 2) weighing a resin matrix, heat-conductive packing and an additive, mixing and stirring the components, then adding a phase-change material with stirring to obtain a heat-conductive material semiproduct; 3) coating the side, coated with the surface treatment agent, of the surface medium layer material with the heat-conductive material semiproduct, processing the heat-conductive interface material by means of a shaping roller or a shaping scraper, and slowly and uniformly curing the material at 125 DEG C to form a phase-change heat-conductive layer material; 4) maintaining the temperature at 120 + / - 10 DEG C, and performing integrated calendering shaping on the heat-conductive silica gel layer, the base material and the phase-change heat-conductive layer material, and performing pressure-maintaining air cooling to obtain the new energy battery pack heat-conductive sealing material.

The invention relates to the technical field of mechanical devices, and particularly discloses a grabbing device for intelligent manufacturing of engineering equipment. The device comprises a transverse rail, an electric appliance cabinet and a grabbing mechanism, a moving beam is arranged above the transverse rail, a walking motor is installed at the rear end face of the moving beam, a power gear is connected to the lower end of an output shaft of the walking motor, a gear rack meshed with the power gear is connected to the outer side face of the transverse rail, and a lead screw motor is arranged on the front side face of the moving beam; a moving groove is formed in the lower surface of the moving beam, a lead screw is arranged in the moving groove, a moving block is arranged in the moving groove, a connecting column extending out of the moving groove is connected to the moving block, and the lower end of the connecting column is connected with the grabbing mechanism; and according to the grabbing device, accurate position adjustment and accurate grabbing of an object can be achieved, it is effectively guaranteed that slipping does not occur when the object is grabbed, damage to the object due to too large clamping force is prevented, and the use reliability of the grabbing device is effectively guaranteed.

The invention discloses an antenna interconnection structure with good grounding, and belongs to the field of radar communication. The structure comprises a multi-layer microwave plate and an antenna array, and is characterized in that the structure also comprises a first gold bonding wire, a second gold bonding wire and a heat dissipation cavity; a chip is bonded on the multi-layer microwave plate, the multi-layer microwave plate is provided with a via hole and a coaxial ground hole, the multilayer microwave plate is provided with a microstrip line and an insulator, one end of the insulator passes through a via hole of the multilayer microwave plate and is connected with the microstrip line on the multilayer microwave plate through a first bonding gold wire, the other end of the insulator passes through the heat dissipation cavity and is welded with the antenna array, and the chip is connected with the microstrip line through a second bonding gold wire; the insulator is provided with a welding point, the antenna array is welded on the welding point, and the upper end face of the insulator and the microstrip line are located on the same horizontal plane. According to the invention, signal energy loss can be greatly reduced, and signal transmission stability and use reliability are effectively guaranteed.

The invention discloses a dust cleaning device for quartz clock assembly, and belongs to the technical field of quartz clock production. The device comprises a base, a workbench is arranged over the base. Stand columns are vertically arranged between the workbench and the four corners of the base. Protruding blocks are fixedly connected to the left sides and the right sides of the front side walland the rear side wall of the workbench. Polish rods parallel front and back are fixedly connected between a left protruding block and a right protruding block. A dust suction box and a dust blowing box are arranged on the left side and the right side of the upper portion of the workbench correspondingly. The dust suction box and the dust blowing box are each provided with an opening, and the openings are close to each other. The bottoms of the dust blowing box and the dust blowing box are fixedly connected with sliding blocks capable of being in sliding connection with the front polished rodand the rear polished rod. The invention is suitable for quartz clock assembling and dust removing. A clamping disc is driven by ta motor to rotate, a worker can conveniently conduct position conversion when assembling a quartz clock, the flexibility is high, and therefore the working efficiency of the worker can be improved.

The invention discloses a megawatt level low speed direct-driven wind turbine generator shaft system device, and belongs to the technical field of wind driven generators. The megawatt level low speeddirect-driven wind turbine generator shaft system device comprises a fixed shaft and a rotary shaft, and is characterized in that an upwind bearing and a downwind bearing are arranged between the fixed shaft and the rotary shaft, cross sections of the fixed shaft and the rotary shaft are in a taper shape, a large flange plate is arranged at one end of the rotary shaft, a rotary shaft reinforcementflange plate is arranged at the other end of the rotary shaft, a bearing pressure ring is fixed on the rotary shaft reinforcement flange plate, the cross section of the fixed shaft is of a two-section type gradual change structure, a part, located between the upwind bearing and a fixed end of a main machine frame, of the fixed shaft, forms a fixed shaft taper face 1, and the other part, located between the downwind bearing and the fixed end of the main machine frame, of the fixed shaft, forms a fixed shaft taper face 2. The megawatt level low speed direct-driven wind turbine generator shaft system device is uniform in stress distribution under a large load condition, enables the shafts to be small in deformation, can inhibit deformation of air gaps well, reduces the designed size of the air gaps, improves a power factor of an electric generator, and then improves overall performance of the electric generator and a generator set, reduces overall weight and production cost of the electric generator, and has the characteristics of being good in rigidity and low in weight.

Fluidized bed semi-drying desulfurization system and method. The system includes a pre-dust removal apparatus connected to a desulfurization column and a bag-type dust remover, wherein the pre-dust removal apparatus includes a hollow shell, wherein a pair of guide rails are arranged on the two sides of the inner surface of the hollow shell, and the other pair of guide rails are distributed in a mirror arrangement with the vertical central line of the hollow shell being a mirror line. Guide columns are fixedly arranged between the upper end and the lower end of the inner surface of each guide rail. A guide plate sleeves each guide column. A disc body is fixedly connected between the other pair of the guide plates. By means of other structures or methods, the system can avoid the defects that an adsorption tank body is difficult to replace in a pre-dust removal apparatus in the prior art, which causes poor dust removal performance of the pre-dust removal apparatus after a certain operation period and adverse effect on dust removal effect of the pre-dust removal apparatus.

The invention provides a cooking device and a control method thereof, and relates to the technical field of kitchen electrical appliances. The cooking device comprises a device body with one side open, a door body covering the open end of the device body, a camera assembly and a driving assembly, wherein the device body is provided with an inner liner; the door body comprises a door frame, an inner door plate arranged in the door frame, and an outer door plate arranged in the door frame; the inner door plate and the outer door plate are arranged in a spaced manner; a cavity is formed between the inner door plate and the outer door plate; the inner door plate is made of a transparent material; the camera assembly is arranged in the cavity, and can shoot foods in the cooking cavity through the inner door plate; and the driving assembly is used for driving the camera assembly to ascend and descend so as to change the height of the camera assembly. Through adoption of the cooking device, the problems that the working reliability of a camera is adversely affected and early damage of the camera is caused easily since the camera is arranged in the cooking cavity and the cooking cavity hashigh temperature and high humidity and is often accompanied by oil fume, vapor and the like in the cooking device are relieved.

The manufacturing method comprises the following steps: preparing a self-cleaning functional monomer into a functional solution, forming the functional solution on the inner surface of a PMMA casting forming mold in a thin-layer liquid film spreading manner, and after a polymer solution for forming a matrix layer is cast, carrying out free radical polymerization reaction to obtain the transparent self-cleaning PMMA plate. Along with spontaneous infiltration and diffusion of the functional monomer, a gradient self-cleaning functional layer of which the concentration distribution is controlled by spontaneous infiltration and diffusion from outside to inside is formed on the surface of the formed PMMA plate. The functional monomer is enriched in the surface layer area of the PMMA plate in a chemical bonding manner based on copolymerization, so that the obtained self-cleaning functional layer has the characteristics of wear resistance and thin thickness, and the expensive high-performance functional monomer and high-concentration utilization thereof have a large regulation space. In addition, the solvent in the thin-layer spreading liquid film is consistent with the pouring polymer solution, so that the polymerized phase interface disappears, namely the self-cleaning functional layer and the matrix layer are integrated, and the interlayer binding force is improved.

The invention discloses a method for improving the axial temperature distribution uniformity of a stator, and belongs to the technical field of generators. The method is characterized by comprising the steps of a, installing a stator axial temperature distribution uniformity device on a wind driven generator; b, installing and arranging a stator pressing plate I, a stator pressing plate II, an axial annular plate, a circumferential annular plate and a stator core of the stator axial temperature distribution uniformity device, setting an included angle between the circumferential annular plateand the axial annular plate to be 85-95 degrees, and forming a back space of the stator core; and c, setting an air flow circulating in the back space of the stator core to be the same in flow rate and opposite in flow direction with an air flow circuiting in the clearance between the stator and the rotor at the same axial position. According to the invention, the static pressure difference can bemaintained at a fixed value, the axial wind speed of a stator wind channel is relatively uniform, the operation is simple, the adjustment is easy, the axial temperature difference between the statorcoil and the iron core can be effectively reduced, and the reliability and the stability of the generator are guaranteed.

The invention belongs to a garbage compressor push head with a self-decompression function. The garbage compressor push head is characterized by comprising a garbage collection box body, a compressioncavity, a compression push head, a driving oil cylinder, a front plate assembly, decompression doors, a hinge and an internal support frame assembly, the compression push head is arranged in the garbage collection box body, the compression cavity is positioned in the compression push head, the internal support assembly used for improving the strength of the compression cavity is arranged in the compression cavity, the front plate assembly is arranged in front of the compression push head, the decompression doors are arranged on the two sides of the front plate assembly, the driving oil cylinder is arranged in the garbage collection box body, the hinge is arranged on the front plate assembly, and the decompression doors are connected with the front plate assembly through the hinge.

The invention discloses a concentrating photovoltaic module and a system formed by the concentrating photovoltaic module. The concentrating photovoltaic module comprises a module box and a radiator, the module box comprises a front panel, side plates and a back plate, the front panel is arranged at the end part of the back plate, the side plates are arranged at the side parts of the back plate, and the longitudinal section formed by the front panel, the side plates and the back plate is an isosceles trapezoid; the radiator comprises an evaporator and a condenser which are connected through a circulating pipeline, the evaporator is arranged on a bottom plate of the back plate, and the condenser is arranged on an upper inclined plate of the back plate; the circulating pipeline comprises a liquid pipeline and a steam pipeline, one end of the evaporator is connected with the condenser through the liquid pipeline, and the other end of the evaporator is connected with the condenser through the steam pipeline. The concentrating photovoltaic module and the system formed by the concentrating photovoltaic module are reasonable in structure, convenient to construct and capable of effectively dissipating heat, improving the power generation efficiency and guaranteeing the service life and the use reliability of a solar cell.

The invention discloses a single-hoisting-ring hoisting prevention device and belongs to the technical field of oil drilling equipment. The single-hoisting-ring hoisting prevention device comprises stopping blocks arranged in lower slots of hoisting lugs, and is characterized in that the stopping blocks are fixed in the lower slots through first rotating shafts and provided with sensing components for monitoring the positions of hoisting rings, and trigger blocks are arranged on the inner walls of the lower slots; and the device further comprises a single-hoisting prevention component which comprises a controller, and the controller is connected with the sensing components in a radio mode and used for receiving signals sent by the sensing components to control starting and stopping of traveling blocks. The device can accurately judge whether hoisting rings on the two sides of a lift sub enter hoisting lug holes or not and then send commands for hoisting or non-hoisting, single-hoisting-ring hoisting can be effectively prevented, and hoisting safety is improved.

The invention discloses a disengagement prevention and single suspension ring prevention lifting system, and belongs to the field of oil drilling equipment. The system comprises a disengagement prevention component, the disengagement prevention component comprises a stop block and a lock block, the stop block is in locked connection with the lock block, a sensing component is arranged on the stop block, and a trigger block is arranged on the inner wall of a lower notch; the system further comprises a single suspension prevention component and a disengagement prevention mechanism, the single suspension prevention component comprises a controller, the controller is in wireless electric connection with the sensing component, the disengagement prevention mechanism comprises a locking block and a baffle block, the locking block is in locking connection with the baffle block, the locking block comprises a latch hook portion and a stress portion, the baffle block performs pendulum motion around a rotating shaft, the baffle block swings clockwise and is locked with a latch hook portion of the locking block, the baffle block swing anticlockwise and is unlocked with the locking block, the baffle block comprises a locking portion and a disengagement prevention portion, the locking portion is located inside the upper notch of a suspension lug, and the disengagement prevention portion is located inside a lug hole of the suspension lug. A suspension ring can be firmly blocked into the lug hole, and the using stability of the whole lifting system is ensured; lifting of the single suspension ring can be avoided, and potential safety hazards are eradicated.

The embodiment of the invention provides a space-based network data security processing center device. The space-based network data security processing center device comprises a public platform, a computing unit, a network security unit and an interconnection and interworking load unit, wherein the public platform is electrically connected with the computing unit, the network security unit and the interconnection and interworking load unit respectively; the public platform is used for providing power supply for the computing unit, the network security unit and the interconnection and interworking load unit; and the public platform is respectively connected with the computing unit, the network security unit and the interconnection and interworking load unit in a loose coupling connection mode. According to the space-based network data security processing center device, safe and reliable operation of space-based networking is guaranteed, and the use reliability and security of the space-based network data security processing center device are guaranteed to the greatest extent.

The invention discloses a method for preventing drop and hoisting of a single hanging ring. The method comprises the steps that a, a drop preventing mechanism of a system for preventing drop and hoisting of the single hanging ring is opened and made to be in an unlocking state; b, when one of the hanging rings is mounted in the position, on one side of an elevator, of a lug hole of a lifting lug, an induction part of a drop preventing part sends a signal, after receiving the signal, a controller forbids moving of a runner wagon, the runner wagon is in a stop state, and after the hanging ring enters the lug hole, the drop preventing mechanism is in a locking state, and the hanging ring is blocked in the lug hole; and c, and the other hanging ring is mounted in the position, on the other side of the elevator, inside the lug hole of the lifting lug, the induction part of the drop preventing part sends a signal, and after receiving the signal, the controller allows the runner wagon to move. It can be effectively guaranteed that the two hanging rings both enter the lug hole, so that single hanging ring hoisting is avoided. Through the joint effect of the drop preventing mechanism and the drop preventing part, the hanging rings can be blocked firmly in the lug hole, slipping is avoided, the working stability and reliability of the elevator are improved, and the safety accident is eradicated.

The invention discloses an intelligent module, and belongs to the technical field of automatic control equipment. The intelligent module comprises a chip and is characterized by further comprising a bracket, the bracket is internally provided with a mounting hole, a first wire channel and a second wire channel, a plug is arranged above the mounting hole, a step is arranged below the mounting hole,and a limiting piece and a magnet are mounted in the mounting hole; the outer side of the magnet is sleeved with a spring, one end of the spring makes contact with the step, and the other end of thespring makes contact with the limiting piece; and the first wire channel is internally provided with a first wire, and the second wire channel is provided with a second wire, the first wire channel communicates with the mounting hole, one end of the first wire is connected with the chip, the other end of the first wire is located below the magnet, one end of the second wire is connected with the spring, and the other end of the second wire is connected with the chip. The intelligent module can automatically monitor and record the working time of the equipment, periodical manual recording is not required, using reliability and safety of the equipment can be ensured, and the working intensity of maintenance personnel can be reduced.

The invention relates to the field of battery modules, and provides a battery module. The battery module comprises at least two busbars, at least one heating resistor connected between two adjacent busbars, and at least two safety structures electrically connected between the heating resistor and the busbars, and when the temperature of the heating resistor is higher than the melting point temperature of the safety structures, the safety structures can be fused and enables the heating resistor to be disconnected from the busbars. According to the battery module, when the current flowing through the heating resistor is too large, the safety structures can be fused through the heating amount of the heating resistor, so that the mechanical connection relation and the electric connection relation between the heating resistor and the busbars are disconnected in real time, the overcurrent phenomenon is interrupted in real time, heat accumulation is hindered, the risks of explosion, fire and the like of the battery module are reduced, and the safety performance of the battery module can be improved. And the safety performance of the battery module can be ensured again by additionally welding the safety structure between the heating resistor and the busbars, so that the battery module can be repeatedly used.