510results about How to "Quick switch" patented technology

The invention discloses a video content retrieval method and device based on television system voice interaction and a terminal, and relates to the technical field of video processing, and the method comprises the steps: when a video is played for the first time, extracting a picture frame from the video at a preset frequency, converting the picture frame into a multi-dimensional image feature vector and a corresponding video timestamp, and carrying out hierarchical storage in a database, constructing vectorized data containing visual semantic information; obtaining a voice retrieval instruction, performing intention recognition and semantic understanding, extracting a detection keyword, and generating a multi-dimensional retrieval feature vector; calculating a matching degree between the multi-dimensional retrieval feature vector and a multi-dimensional image feature vector of a video picture frame stored in a database, and screening out picture frames of which the similarity is higher than a preset similarity threshold to form a retrieval candidate matching set; and determining matched picture playing. The video content retrieval method is efficient, accurate and high in interactivity, and retrieval experience and operation efficiency of the user in the video watching process are remarkably improved.

The utility model provides a kind of circuit board test fixture, it is related to the technical field of circuit board, including guide piece and clamping module.Guide piece forms adjustment path;Clamping module includes two clamping components, two clamping components are spaced apart in guide piece, and at least one of two clamping components is movably positioned along adjustment path setting, clamping component is equipped with the clamping part of electrically energizable setting.In the utility model, the clamping part of two clamping components is respectively used to clamp the two contacts of circuit board, and clamping part is electrically energizable setting, to realize the fixation of circuit board and power-on test.Further, at least one of two clamping components is movably positioned along guide piece, i.

This utility model discloses a combined training device, including a base, two weight assemblies, a dumbbell bar, and a kettlebell handle. The two weight assemblies are placed on the base and arranged left and right, with connecting holes on each weight assembly. Each end of the dumbbell bar has a first connecting seat for longitudinal sliding engagement with the weight assembly. The first connecting seat has a mounting hole communicating with the connecting hole. Two spindles, arranged left and right, are disposed inside the dumbbell bar and slide laterally with it, extending into the mounting hole on the same side. The kettlebell handle has a second connecting seat for longitudinal sliding engagement with the weight assembly. The second connecting seat has a socket, a pin, and a locking element. The socket communicates with the connecting hole, the pin passes through the socket, and the locking element locks the pin. The advantage is that it allows for quick switching between dumbbells and kettlebells, making it convenient for users.

The utility model discloses a modularized combined deformation signboard capable of being quickly updated, and particularly relates to the technical field of signboards, the modularized combined deformation signboard mainly comprises a switching rotating block, a plurality of magnets are embedded and magnetically attracted on the outer wall of the switching rotating block, one side of each magnet is bonded and fixed with a module identification strip, and one side of the switching rotating block is provided with a combined switching assembly; the combined switching assembly comprises a rotating shaft fixedly arranged on one side of the switching rotating block; the combined switching assembly further comprises a sleeve plate, a rotating cap, a linkage shaft and a sleeving plate. The combined switching assembly is adopted, the magnets on the eight module identification strips are magnetically attracted to the switching rotating block to achieve combination, the linkage shaft and the rotating shaft can rotate the switching rotating block, the eight module identification strips are rotated, updated and replaced corresponding to different kindergarten child name identifications, signboards of different shapes and names are rapidly updated and switched, and the kindergarten child name identification switching device is simple in structure, convenient to use and high in practicability. The use limitation is small.

The utility model relates to the technical field of paint film testing, in particular to a device for testing the stone impact resistance of a paint film, which comprises a blanking pipe and a bearing platform positioned below the blanking pipe, the blanking pipe is used for directionally putting stones for testing; the bearing platform comprises a mounting support and a base plate, one end of the base plate is hinged to the mounting support, and the other end of the base plate is connected with the mounting support through a supporting piece. The length of the supporting piece or the connecting position of the supporting piece and the mounting support is adjustable, and the supporting piece is used for simulating stone hit conditions at different angles; the substrate is provided with a U-shaped card slot used for placing a test card. Through the device, the problem that an existing testing device is complex in structure can be effectively solved, and testing is more stable.

The utility model relates to the technical field of file storage cabinets, and discloses a rotary file storage cabinet with an automatic classification function, which comprises a supporting bottom plate, the top of the supporting bottom plate is fixedly connected with a supporting base, the top of the supporting bottom plate is fixedly connected with a classification mechanism, and the top of the supporting base is fixedly connected with a connecting chassis. A conveying belt is fixedly connected to the top of the supporting base, a scanner is fixedly connected to the inner side of the top of the supporting base, and a rotating motor is fixedly connected to the interior of the supporting base. The second driving sliding rail drives the supporting base to slide left and right, the storage drawers are conveyed by the conveying belt and scanned by the scanner to judge types and automatically classify the storage drawers, the first driving sliding rail is started to drive the conveying belt and the supporting base to the corresponding layers, the rotating motor drives the rotating column and the connecting supporting plate to rotate, and the suckers fix the drawers, so that the storage efficiency is improved; manual errors are reduced, and stability and reliability of the device are enhanced.

The utility model belongs to the technical field of automobile manufacturing, and particularly discloses a core-pulling automobile part mold. One side of the mold body is provided with a fixing plate and a fixed mold base, two core tubes are arranged at the bottom of the fixing plate, an adjusting assembly is arranged between the fixing plate and the two core tubes, the adjusting assembly comprises a distance adjusting unit and an angle adjusting unit, the distance adjusting unit comprises a first electric push rod, and the angle adjusting unit comprises a second electric push rod. The first electric push rod is used for driving the two core pipes to adjust the distance, the angle adjusting unit comprises a second electric push rod, the second electric push rod is used for adjusting the angle of the core pipes, the distance adjusting unit can flexibly adapt to the distance between side holes of the automobile accessory, core pulling failure is avoided, and the angle adjusting unit can adjust the core pulling angle in real time. And the forming precision of accessories with complex structures is guaranteed, so that the die replacement frequency and cost are reduced, the production efficiency is improved, accessories with different specifications can be quickly switched and produced, and diversified production requirements are met.

The utility model discloses GRS regenerative environmental protection bag, including outer bag body and two groups of handle. The utility model, the combination of inner bag body through connecting piece and magic paste structure realizes independent use or as the quick switching of outer bag body buffer layer, and the alignment design of handle hole after the folding of connecting piece guarantees the convenience of carrying when the inner bag body is used alone, and the fixed formation of the separation cavity of the three edges of interlayer and the inner side wall of outer bag body, and the load of inner bag body is transmitted to the whole circumference of outer bag body through magic paste multi -point connection, and the honeycomb support layer in outer bag body can further promote the support strength, improve the service life, the handle is connected with outer bag body through the connecting rib, and the force is dispersed through the connecting rib when carrying, and the anti -deformation ability is enhanced, and the connecting strength of handle and outer bag body is improved.

The utility model relates to the technical field of magnetic core processing, in particular to a blank pressing machine for magnetic core processing, which comprises a circular rotating plate, and a supporting plate is arranged above the circular rotating plate. A mold is installed above the circular rotating plate through screws, a push block is attached to a bottom plate below the mold, an output shaft of a second air cylinder is installed below the push block through screws, an air cylinder controller is arranged on one side of the second air cylinder, a rotating shaft is welded to the lower portion of the circular rotating plate, and a limiting plate is welded to the outer wall of the rotating shaft; according to the improved blank pressing machine, the rotating disc type mold switching assembly is arranged, a plurality of molds are arranged, the situation that equipment is idle when a single mold is used for charging and demolding is avoided, equipment resources are fully utilized, the overall utilization rate is greatly increased, the production cost is reduced, and the production efficiency is improved. And meanwhile, the demolding assembly is arranged, so that the internal blank can be rapidly demolded.

The utility model discloses an efficient die cutting device self-adaptive to corrugated boards, and relates to the technical field of corrugated paper processing, the efficient die cutting device comprises an assembly line frame and a vertical structure frame, the side edge of the assembly line frame is provided with the vertical structure frame, the side edge above the vertical structure frame is provided with a driving motor, the driving motor is meshed with a driving mechanism through a gear, and the driving mechanism is connected with the assembly line frame. A driving mechanism in the vertical structure frame is connected with a vertical moving block, a horizontal moving block is slidably installed in the vertical moving block through a motor, and a horizontal supporting table is arranged below the horizontal moving block. Corrugated paper is conveyed through the assembly line frame, the horizontal supporting table is moved through lifting of the vertical moving block and transverse movement of the horizontal moving block to bear the conveyed corrugated paper, and then the die cutting position of the pressing block is adjusted through the tool setting block. And then the whole supporting frame is pressed downwards through the driving air cylinder, the corrugated paper is subjected to die cutting through the cutting edge, and efficient cutting is achieved.

This invention provides a cylindrical battery steel shell end flanging forming mechanism. It relates to the technical field of battery steel shell processing equipment. The cylindrical battery steel shell end flanging forming mechanism includes a support base and a U-shaped bracket fixedly installed on the top of the support base. A horizontal shifting mechanism is provided above the support base, and two U-shaped frames are provided on the horizontal shifting mechanism. A transverse shifting shaft is rotatably mounted on each of the two U-shaped frames. A bearing beam is fixedly mounted at the far ends of the two transverse shifting shafts. A support frame is fixedly mounted on each of the two bearing beams. A hollow sliding stage is slidably mounted above each of the two support stages. Multiple steel shell placement cylinders can be detachably mounted on each of the two hollow sliding stages. This invention can significantly improve continuous flanging efficiency and can quickly switch between corresponding positioning fixtures and stamping flanging fixtures according to the steel shell model.

The utility model relates to a workpiece clamping technology in the field of machining, in particular to an efficient valve block clamping device which comprises a base, a base frame and a plurality of sets of detachable clamping devices, the base frame and the base are rotationally connected and fixed through a locking device, and a positioning plate at the bottom of the base frame is matched with a positioning disc on the base to achieve accurate positioning. A spring is arranged at the bottom of the positioning disc to enhance stability, and meanwhile the structural reliability is further improved through the design of the supporting table and the rotating plate. According to the valve block clamping device, the machining positions are switched by rotating the base frame, machined workpieces are rapidly replaced, the continuous and efficient machining process is achieved, the operation convenience and production efficiency of valve block clamping are remarkably improved, and the manual intervention cost is effectively reduced.

The utility model discloses a kind of conveying top pin mechanism of automatic capping machine, including conveying line and the carrier on conveying line transmission and for product loading, the middle below of conveying line is equipped with jacking structure, the position of jacking structure is equipped with blocking cylinder, limiting component and positioning component on conveying line;Jack-up structure includes fixed plate, the middle below of fixed plate is equipped with jacking cylinder, the piston rod of jacking cylinder is passed through fixed plate and is connected with jacking plate upwards, at least two pairs and symmetrically arranged top block are equipped on jacking plate, the side of top block is equipped with upwards protruding and for jacking jacking rod, magnet seat is equipped between top block and jacking plate.The utility model has the beneficial effects that: the quick separation of carrier and cover plate is realized, can adapt to the top pin separation operation between different sizes of carrier and cover plate, jacking is simple, easy;And the structure of this conveying top pin mechanism is simple, through quick change, quick adjustment realizes the conveying of different sizes of carrier, cover plate, top cover.

The application discloses a multi-direction locking type tooling fixture for a numerical control machining center, which comprises a cabinet containing a platform plate, a clamp assembly is arranged on the platform plate, each clamp assembly contains two groups of linear motors, one group of linear guide rod modules, one group of rotary cylinders and one group of clamp carriages, the two groups of linear motors are arranged in parallel, the linear motor contains a first moving carriage, a bearing assembly is arranged on the first moving carriage, a limiting track is arranged on the lower surface of the linear guide rod module, the limiting track is in limiting sliding connection with one of the bearing assemblies, the linear guide rod module contains a second moving carriage, the rotary cylinder is fixedly installed on the second moving carriage, the rotary cylinder is in driving connection with the clamp carriage, and the clamp main body is installed on the clamp carriage. The linear guide rod module is driven by the two groups of linear motors, the linkage control of the rotary cylinder is combined, multi-dimensional accurate positioning of the clamp main body in the horizontal, vertical and rotary directions is realized, and the adaptability to special-shaped workpieces is remarkably improved.

The utility model relates to a multifunctional steam milk bar, including the tubular body, one end connects the steam source, and the other end sets up the blast hole, sleeve, sleeve sets up on the tubular body, the sleeve and the tubular body form the air cavity between, and the sleeve sets up the inflation hole intercommunication air cavity on, around the inflation hole, the surface of sleeve sets up the adjusting cylinder, adjusting sleeve, set up in the adjusting cylinder, adjusting sleeve sets up the air inlet groove A on, the air inlet groove A intercommunication inflation hole, adjusting head, extends into the adjusting cylinder, adjusting head sets up the air inlet groove B on, wherein, the sleeve opening sets up close to the blast hole one end, and the other end of sleeve and tubular body between seal connection, around the axis of rotation adjusting head adjusting head, the air inlet groove A and the air inlet groove B intercommunication or break off, the utility model discloses through the adjusting head on the sleeve, can intercommunication or break off the air inlet groove A and the air inlet groove B, realize the quick switching of multifunctional steam milk bar's work mode, and the switching mode is simple and quick, and the use efficiency of multifunctional steam milk bar is improved.

The utility model provides a kind of combined cutter, including shell, several knife groups, tool rest, first drive assembly and second drive assembly.Shell includes main shell and auxiliary shell, main shell includes release area, and auxiliary shell is equipped with several knife outlets;Every knife group includes tool rest and blade, and tool rest includes stress part;Tool rest includes several knife areas, and every knife area houses a knife group;First drive assembly is suitable for driving tool rest rotates around rotation center axis, and then it can select one knife group to align release area and become target knife group;Second drive assembly includes push part and drive button, and push part can reciprocate in release area along the radial direction of main shell, and drive button can drive the blade of target knife group to extend or retract corresponding knife outlet by push part.The utility model realizes the quick switching of multiple knife groups by rotating tool rest, while ensuring that target knife group can stably switch between storage state and working state, to improve the functional integration, operation convenience and structural reliability of combined cutter.

The utility model provides an elevator buffer welding rapid switching tool, and relates to the technical field of elevator buffers. The device comprises a driving mechanism unit, a top cover tool and a base tool, the driving mechanism unit comprises a driving mechanism body and a connecting base which are connected with each other, and the connecting base can be detachably connected with any one of the top cover tool and the base tool. The driving mechanism unit can be quickly and conveniently connected with any one of the top cover tool and the base tool through the connecting base, so that quick switching between top cover welding operation and base welding operation is realized; according to the rapid switching tool for welding of the elevator buffer, the top cover tool and the base tool can be rapidly switched only through the same driving mechanism unit, the production requirement is met, the production cost is effectively reduced, and the production efficiency is improved.

The utility model discloses a multifunctional conjoined claw hammer, which relates to the field of claw hammers, and comprises a hammer handle, the top end of the hammer handle is rotatably connected with a claw, the claw adopts a rotatable design, the hammer handle comprises a metal handle, and the outer side of the top of the metal handle is sleeved with a rubber anti-skid sleeve. The core highlight is that the claw part has the flexible characteristic of free rotation, a user can easily adjust the orientation of the claw according to actual use scenes such as nail pulling, object prying or force application angle adjustment, diversified requirements can be met without replacing tools, the rotating structure is precisely designed, it is ensured that the claw is stable and smooth during rotation, and the rotating effect is good. Meanwhile, the locking mechanism is reliable, modes can be switched rapidly, stable positioning can be achieved after the angle is selected, accidental deviation in operation is avoided, the innovative design greatly improves the applicability and operation efficiency of the tool, and a user can handle woodworking, maintaining and dismounting tasks with high proficiency.

The utility model provides an energy storage system, and relates to the technical field of power grid management, and the energy storage system comprises an energy storage device, a switching device, and an AC function unit. Wherein the energy storage device is connected with an alternating current port of the energy storage system and is used for alternating current and direct current conversion and electric energy storage; the alternating current function unit is used for providing a supporting operation function for the energy storage system; the AC function unit is connected with the AC port through the switching device, and the switching device is used for controlling the commutation or disconnection of a power supply path of the AC function unit at a target phase. Therefore, the alternating current function unit is used for providing a supporting operation function for the energy storage system, the stability and the reliability of the energy storage system in the operation process are guaranteed, meanwhile, the application scene of the energy storage system is enriched, and the system is particularly suitable for the scene that a single-phase important load is connected to micro-grid energy storage three-phase alternating current.

The utility model relates to the technical field of optical device welding, in particular to a BOSA optical device laser welding device which comprises a bottom plate, a welding mechanism arranged above the bottom plate and a clamping mechanism used for clamping and positioning an optical device, the clamping mechanism is located below the welding mechanism, and the clamping mechanism comprises a clamping structure and a moving structure. And a rotating structure for switching the welding position of the optical device is arranged above the rear sliding seat. The welding device has the beneficial effects that when the optical device is welded, the clamping mechanism is used for clamping and positioning the optical device, then the welding mechanism is used for welding the receiving end of the optical device, then the rotating structure is used for rapidly rotating the transmitting end of the optical device to a welding area, and then the welding mechanism is used for welding the transmitting end of the optical device; therefore, the tedious operation of repeatedly clamping and fixing the optical device is reduced, the transmitting end and the receiving end of the optical device are rapidly switched, the welding time is shortened, and the welding efficiency is improved.

A sight and a pattern structure thereof, the pattern structure comprising a first pattern and a second pattern. The first pattern is a first geometric shape composed of a first light source unit and has a first color. The second pattern is a second geometric shape composed of the first light source unit. An inner side edge of the second pattern is oppositely arranged along an outer side edge of the first pattern, wherein the outer side edge of the first pattern and the inner side edge of the second pattern have a first characteristic interval between corresponding positions of each other, and the first characteristic interval between the corresponding positions is the same. The second pattern has a first end and a second end, the first end and the second end are oppositely arranged and connected to the inner side edge of the second pattern respectively, and the first end and the second end are separated by a second characteristic interval.

The postoperative anesthesia analgesia equipment comprises a barrel shell, a gasket is installed at the bottom end of the barrel shell, a plurality of copper strips are installed on the top face of the gasket in the barrel shell, the copper strips extend outwards at equal intervals with the center of the gasket as the circle center, and connecting strips are integrally formed and fixed to the copper strips; a semiconductor chilling plate is fixed on the copper bar in the center of the gasket through an adhesive, a top cover plate is mounted at the top of the barrel shell, a fixed frame is mounted in the middle of the top cover plate, a movable frame sliding along the fixed frame is inserted in the fixed frame, one end of the movable frame abuts against the copper bar, and a fan is mounted in the movable frame. The semiconductor chilling plate is used as a cold and heat source, heat supply or cold supply can be conducted only by supplying power and switching the current supply direction, repeated use can be achieved, meanwhile, the fan is arranged for the semiconductor chilling plate, cold energy or heat energy of the non-use end can be actively blown out, and the service life of the semiconductor chilling plate is prolonged. And heat or cold output and used by the semiconductor chilling plate is conducted through the copper bar, so that a larger range can be covered.

The embodiment of the utility model provides a multi-mode operation electrode used under the abdominal cavity, and relates to the field of medical equipment, the multi-mode operation electrode comprises an operation handle, a sheathing canal, an inhaul cable, a bipolar electrocoagulation clamp assembly and a monopolar electrocoagulation hook; the sheathing canal is connected with the operating handle, and the operating handle is connected with the bipolar coagulation forceps assembly through the inhaul cable and used for controlling the bipolar coagulation forceps to be opened or closed; at least one of the bipolar electrocoagulation clamp assembly and the monopole electrocoagulation hook is in sliding fit with the sheathing canal, so that the monopole electrocoagulation hook or the bipolar electrocoagulation clamp assembly can extend out of the far end of the sheathing canal and work independently. Through the design of the operation electrode, the difficulty of switching different instruments in the operation process can be reduced, the time is shortened, the operation efficiency is improved, the infection risk is reduced, and the operation success rate is improved.

The utility model relates to the technical field of carton waste recovery, in particular to a waste recovery device in carton production, which comprises a base and a recovery box arranged at the upper end of the base, and a crusher is arranged on the inner wall of the upper end of the recovery box. Large waste materials can be cut into small waste materials through the crusher, the small waste materials are guided by a second guide plate to slide in the direction of a conveying opening, the waste materials enter a conveying frame through a guide frame and a feeding opening, a motor is started to drive a conveying auger to rotate, and the waste materials are conveyed by the conveying auger to move upwards and finally discharged from a discharging opening. And the discharging opening is formed in the upper end of the recycling box, so that the waste falls into the recycling box again and is crushed by the crusher again, repeated crushing and cutting of the waste can be achieved, the waste of the carton is divided into small blocks with almost the same size, and the problem that the extruded waste blocks are prone to being extruded, loosened and difficult to form due to the large waste size is solved.

The utility model is suitable for circuit board transportation technical field provides a kind of self-locking clamp, including fixed base and cylinder, the bottom of fixed base is equipped with the limit block that is engaged with plug-in board frame, still include clamping assembly and rebound component, cylinder can realize the quick switching of automatic opening of clamping assembly and automatic clamping by the mode of cooperation with rebound component, greatly shorten the loading and unloading time of circuit board, to realize the automatic clamping of plug-in board frame to circuit board, improve the loading and unloading efficiency of circuit board on plug-in board frame, clamping assembly can complete the quick clamping of circuit board in plug-in board frame, avoid its to occur in the process of transportation and shake, to avoid its and adjacent circuit board or the collision or friction between plug-in board frame, ensure the stability of circuit board in the process of transportation, improve the product quality of circuit board, simultaneously, still can form self-adapting clamping to circuit board of different thickness, expand the application range of plug-in board frame.

An aluminum plastic machine high-speed suction and release plate device, the device is composed of air source, high-frequency electromagnetic valve, vacuum generator, suction cup, first pressure reducing valve, second pressure reducing valve. The device works with high-frequency electromagnetic valve and vacuum valve to realize the high-frequency switching of the suction and release air mode of the suction and release plate device, which has the advantages of rapid switching, adjustable air pressure, simple structure and the like. The device works with high-frequency electromagnetic valve and vacuum valve to realize high-speed switching of the suction and release mode.

The application relates to a screening type annular vibration grinding machine suitable for alumina, which comprises a vibration grinding machine body, the vibration grinding machine body at least comprising a grinding groove and an automatic screening device, the automatic screening device comprising a climbing plate assembly and a discharge plate assembly. The climbing plate assembly comprises a fixed frame, a rocking plate assembly, a rotary limiter, a locking assembly and a foolproof assembly. The screening type annular vibration grinding machine can realize quick switching of the working state of the climbing plate assembly, and the operation is simple and the machine can be operated without stopping. The climbing plate assembly of the screening type annular vibration grinding machine can realize stable keeping of the working state, and the posture of the driving rocking plate and the driven rocking plate cannot be changed due to high-frequency vibration of the device. After the two steps of front pulling of the foolproof assembly and rear pressing of the pressing piece are completed, the rotation freedom degree of the rotating shell and the driving rocking plate is unlocked, and then the driving rocking plate is rotated to complete the state switching of the rocking plate assembly.

This invention provides an apparatus for oxygen-enriched roasting of lepidolite. The apparatus includes: a roasting furnace; a feed trough disposed on the roasting furnace, with a discharge trough at the bottom of the furnace, the outlet of which is sealed by a sealing plate; and a combustion assembly mounted on the roasting furnace for roasting the lepidolite. The apparatus for oxygen-enriched roasting of lepidolite provided by this invention prepares oxygen-enriched gas and fuel through an oxygen-enriched air preparation assembly, which then enters the roasting furnace for combustion. Because the fuel burns faster and more completely in an oxygen-enriched state, the emission of harmful gases is effectively reduced. The oxygen-enriched gas lowers the fuel's ignition point; under the same natural gas mass and flow rate, a higher oxygen content in the oxygen-enriched air results in a higher flame temperature, significantly improving the utilization rate of thermal energy.

The utility model discloses a charging system fault detection device, which relates to the technical field of charging fault detection and comprises a box body, a control panel is arranged on the inner top surface of the box body, a fixing plate is arranged at the upper end of one side of the control panel, a mounting plate is arranged on the top surface of the fixing plate, and a plurality of fixing bolts are arranged between the mounting plate and the fixing plate in a penetrating manner. A nut of the fixing bolt is provided with anti-skid lines and is in a round button shape, an inserting ring is arranged in the middle of the top face of the mounting plate, a cover plate is hinged to one side of the inserting ring, a buckle protruding block is hinged to the other side of the inserting ring, and a clamping groove corresponding to the buckle protruding block is formed in the cover plate; according to the utility model, through the elastic clamping cooperation of the plugging ring and the C-shaped frame, the modularized replacement and multi-standard adaptation of the plugging gun interface are facilitated, the compatibility of the detection equipment and the maintenance convenience of the plugging port are improved, and the problem that the whole body needs to be replaced after the plugging port of the traditional detection device is replaced is solved; and the stability and efficiency of fault detection of the charging system are obviously improved.