1048results about "Circuit-breaking switch details" patented technology

The utility model discloses a small leakage protection circuit breaker, an operating mechanism thereof and a double-breakpoint test loop. The operating mechanism comprises a handle and a reset torsion spring, the operating mechanism has a switching-on state and a switching-off state, and the reset torsion spring is used for providing reset force for the handle; wherein the reset torsion spring is made of a conductive material; the double-breakpoint test loop comprises a first breakpoint, a second breakpoint and a test button; when the operating mechanism is in a closed state, the first breakpoint is in an on state under the pressing of the operating mechanism; when the operating mechanism is in an opening state, the first breakpoint is in a breaking state; the second breakpoint comprises a second static contact and a second moving contact, the second moving contact and the reset torsion spring are integrally formed, the second moving contact is located below the test button, and when the test button is pressed by external force, the second moving contact and the second static contact are in a connected state; when the first breakpoint and the second breakpoint are both in the on state, the double-breakpoint test loop is conducted; the device has the advantage of being more compact in structure.

The invention discloses a molded case circuit breaker, which comprises a shell, and an electric operating mechanism is arranged in the shell. The electric operating mechanism comprises a moving contact action assembly with a rotating block and a shifting rod, a sliding block which is arranged on the shell in a sliding manner and can drive the shifting rod to shift, an operating shaft which can drive the sliding block to slide and is provided with an operating hole site, and a motor speed reduction assembly which can drive the operating shaft to rotate, and the operating shaft is in linkage connection with a shifting shaft block; the sliding block is provided with a matching groove corresponding to the shifting shaft block, the operation shaft rotates to drive the shifting shaft block to shift in the matching groove so as to drive the sliding block to slide, the shell is provided with a cover plate capable of shielding the operation hole position in a sliding mode, and the shell is further provided with a rotating lock and a tripping button located on one side of the rotating lock. By arranging the locking microswitch, the manual microswitch, the first microswitch and the second microswitch, signal feedback of a manual operation state, a rotating lock locking state and a current circuit breaker state can be realized.

The utility model relates to a high-voltage direct-current relay. The high-voltage direct-current relay comprises a static contact and a movable assembly, and the static contact is provided with a static contact point; the movable assembly comprises a pushing mechanism, a movable spring mechanism, an elastic element, a support and a fixing piece, the movable spring mechanism is provided with a movable contact opposite to the static contact, the elastic element is arranged between the movable spring mechanism and the pushing mechanism, the two ends of the elastic element abut against the movable spring mechanism and the pushing mechanism respectively, the fixing piece is connected to the pushing mechanism and the support, and the support is in sliding fit with the movable spring mechanism; a supporting surface facing the movable spring mechanism is formed on the fixing sheet, the supporting surface is located between the movable spring mechanism and the pushing mechanism, the supporting surface, the movable spring mechanism and the pushing mechanism are arranged at intervals, and the supporting surface can support the movable spring mechanism on the path where the movable spring mechanism moves away from the static contact. The high-voltage direct-current relay has the advantages of being small in size, low in cost and high in short-circuit current and voltage resistance.

The invention belongs to the technical field of power equipment, and particularly relates to a mining high-voltage explosion-proof circuit breaker which comprises a shell, a mounting frame, an arc extinguishing assembly and a permanent magnet assembly. The rotating rod is rotationally connected to the mounting frame through a bearing; the hand separating mechanism is mounted at the rear end of the shell; the interlocking mechanism comprises interlocking parts arranged at the lower ends of the two sides of the shell, the interlocking parts are used for synchronously opening when the box door is opened, and the interlocking parts are further provided with positioning parts; and the auxiliary mechanism comprises linkage parts arranged at the upper ends of the two sides of the shell, and the two sides of the shell are further provided with a limiting part and an oil spraying part. Through multi-stage cooperation of permanent magnet driving, mechanical interlocking, emergency manual opening and an intelligent lubricating system, safe opening and closing, door opening forced outage, overhaul false closing prevention and long-term maintenance of key components of the mining high-voltage circuit breaker are achieved, and operation safety and equipment reliability in the explosion-proof environment are remarkably improved.

The utility model relates to a high-voltage direct-current relay. The high-voltage direct-current relay comprises a static contact and a movable assembly, and the static contact is provided with a static contact point; the movable assembly comprises a pushing mechanism, a movable spring mechanism, an elastic element and a support, the movable assembly comprises a pushing mechanism, a movable spring mechanism, an elastic element and a support, the movable spring mechanism is provided with a movable contact opposite to the static contact, the movable spring mechanism is elastically matched with the pushing mechanism through the elastic element, and the support is connected to the pushing mechanism; the movable spring mechanism is provided with a sliding structure, the support is provided with a sliding groove in sliding fit with the sliding structure, a supporting face located on the side, facing the pushing mechanism, of the sliding structure is formed on the side wall of the sliding groove, the supporting face and the sliding structure are spaced, and the supporting face is used for supporting the sliding structure when the movable contact and the static contact bounce off due to short-circuit current. The sliding structure is abutted against one position on a path of the moving spring mechanism moving away from the static contact. The high-voltage direct-current relay has the advantages of being small in size, low in cost and high in short-circuit current and voltage resistance.

The invention discloses a rapid fusing device for adaptive overload protection, and belongs to the technical field of overload protection. Comprising a multi-dimensional monitoring module used for collecting circuit current, environment temperature and humidity and equipment operation parameters in real time; the intelligent processing module is internally provided with a self-adaptive algorithm unit, and dynamically calculates and adjusts a multi-stage fusing threshold value based on real-time acquired data; the rapid execution module comprises a composite fusing structure and an arc extinguishing unit, and the composite fusing structure executes overload early warning, graded fusing or complete cutting action according to the multi-stage fusing threshold value; and the communication interaction module is used for realizing device state remote monitoring, threshold parameter remote configuration and fault information uploading. Parameters such as current, temperature and humidity are collected in real time through the multi-dimensional monitoring module, a multi-stage fusing threshold value is dynamically adjusted in combination with a self-adaptive algorithm of the intelligent processing module, the limitation that the threshold value of a traditional fuse is fixed is broken through, load fluctuation and environment change can be accurately adapted, and mistaken fusing or protection lag is avoided.

The invention discloses a dual redundant drive type self-adaptive double-speed circuit breaker, and relates to the technical field of circuit breakers. Comprising a main body, a locking assembly is arranged on one side of a connecting piece, a cleaning assembly is arranged at the top of a second bevel gear, and a moving assembly is arranged in a cleaning plate, a lead screw rotates to drive a sliding column to move, then a base is driven to move synchronously, and the base moves to drive a positioning column to move into the connecting piece; the sliding column drives the lock catch to rotate through an inclined plane arranged on the sliding column, the lock catch and the protruding position of the connecting piece are in a locking state after the lock catch rotates, the position of the touch panel in a disengaged state is locked, and potential safety hazards caused by the fact that the touch panel makes contact with the contact again after a worker mistakenly touches the handle are prevented. And after the inclined surface of the sliding column is separated from the lock catch, the lock catch is driven to rotate through the first spring, so that the locking of the connecting piece is released.

The invention relates to the technical field of circuit breakers, in particular to a fast breaking circuit breaker which comprises a shell and a contact assembly arranged in the shell, the contact assembly comprises a movable contact arranged in a rotating mode and a fixed contact arranged in a fixed mode, and a movable contact driving arm is further arranged in the shell in a rotating mode. The moving contact driving arm is used for driving the moving contact to rotate until the moving contact is disconnected with the static contact, an electromagnetic tripping assembly is further arranged in the shell, the electromagnetic tripping assembly comprises a driving piece and a transmission piece arranged in a rotating mode, and the transmission piece is used for abutting against the moving contact driving arm to limit rotation of the moving contact driving arm. And the driving piece is used for generating magnetic force and enabling the transmission piece to rotate until the transmission piece is separated from the moving contact driving arm. Through the innovative design of the electromagnetic tripping assembly, rapid breaking of the circuit breaker is realized.

An electronic leakage circuit breaker. It solves the problem that the existing contact system will affect the control circuit board when disconnected. It includes a shell, the shell includes a first shell and a middle shell, the first shell and the middle shell cooperate with each other to form a first accommodating chamber, and also includes: a first contact mechanism, which is arranged in the first accommodating chamber and is arranged in close contact with the middle shell; the first contact mechanism includes a moving contact piece and a static contact piece; a zero-sequence transformer, which is arranged in the first accommodating chamber; a control circuit board, which is connected to the zero-sequence transformer and is used to receive the signal on the zero-sequence transformer; an isolation component, which is arranged between the control circuit board and the first contact mechanism, and is used to separate the control circuit board and the first contact mechanism. The beneficial effect of the utility model is that an isolation component is provided to separate the control circuit board and the first contact mechanism, so as to prevent the arc of the contact mechanism from affecting the control circuit board and thus affecting the life and stability of the product.

The invention discloses an alternating-current high-voltage rotational symmetric busbar frame circuit breaker, and relates to the technical field of electrical equipment, the alternating-current high-voltage rotational symmetric busbar frame circuit breaker comprises a circuit breaker main body of a rectangular frame structure, and the outer wall of one side of the circuit breaker main body is provided with a deflector rod used for efficiently guiding contacts of the circuit breaker main body to be separated. The deflector rod is made of high-strength alloy steel, one end of the deflector rod is in a bent angle shape, the end, close to the circuit breaker body, of the deflector rod is electrically connected with an internal contact of the circuit breaker body, one end of the high-voltage arc-extinguishing chamber is matched with the internal contact of the circuit breaker body in an inserted mode, and the high-voltage arc-extinguishing chamber is in a cube shape. A gas production increasing unit is arranged outside one side of each arc extinguishing grid piece, a back anti-breakdown unit is arranged inside one side of the base, a discontinuous deionization unit is arranged on one side, close to the base, of each arc extinguishing grid piece, and the gas flow rate and the gas volume are increased through the gas production piece, so that gas flow in the high-voltage arc extinguishing chamber is promoted.

The utility model belongs to the technical field of power equipment, and discloses a circuit breaker. The circuit breaker comprises a base and a cover body, the cover body and the base are mutually buckled to form a mounting cavity, a plurality of heat dissipation holes are formed in the top of the cover body, a connecting plate is arranged at the bottom of the cover body, one end of the connecting plate is attached to the end face of the base, a plurality of flow guide structures are arranged on the connecting plate, and the heat dissipation holes and the flow guide structures are all communicated with the mounting cavity. And the mounting cavities can be communicated with the external space through the heat dissipation holes and the flow guide structures. According to the utility model, under the condition that the overall volume of the circuit breaker is not influenced, gas convection is formed, the heat dissipation efficiency is improved, and the temperature rise of the circuit breaker is reduced.

The utility model relates to a high-voltage direct-current relay. The high-voltage direct-current relay comprises a static contact and a movable assembly, and the static contact is provided with a static contact point; the movable assembly comprises a pushing mechanism, a movable spring mechanism, an elastic element and a support, the movable spring mechanism is provided with a movable contact opposite to the static contact, the movable spring mechanism is elastically matched with the pushing mechanism through the elastic element, and the support is connected to the pushing mechanism and is in sliding fit with the movable spring mechanism; the support is provided with a supporting structure, a supporting surface is formed on the supporting structure, the supporting surface and the movable spring mechanism are arranged at an interval, and the supporting surface is used for supporting the movable spring mechanism on a path of the movable spring mechanism moving away from the static contact when the movable contact and the static contact are bounced off due to short-circuit current. The high-voltage direct-current relay has the advantages of being small in size, low in cost and high in short-circuit current and voltage resistance.

The application discloses a quick closing operation mechanism of a circuit breaker, which comprises a shell, a handle, a static contact support, a movable contact support, a linkage and a tripping mechanism, the handle and the movable contact support are rotationally arranged in the shell, a contact torsional spring is arranged between the shell and the movable contact support, a long circular hole is arranged on the movable contact support, a pin shaft is arranged in the shell and passes through the long circular hole, and the movable contact support rotates relative to the pin shaft; an installation area is arranged in the shell, an energy storage limiting piece is slidably arranged in the installation area, a movable area is arranged on the handle, an abutting portion is arranged on the movable contact support, the energy storage limiting piece is provided with a moving portion and a matching portion which are arranged in the movable area, the application can make the movable contact support move beyond the stroke, is not limited to a fixed point, improves the contact force, and based on the energy storage limiting piece, the last action of closing is realized to store energy, the oxides between the movable contact and the static contact can be quickly broken down, and the overall closing effect is improved.

The invention discloses a self-energy arc extinguishing device, a circuit breaker and an electric power system, the self-energy arc extinguishing device comprises an air compression chamber, an expansion chamber, a first nozzle and a moving arc contact, and a piston pull rod is arranged in the air compression chamber; the expansion chamber is connected with the air compression chamber, and the front end of the piston can extend into the expansion chamber to form a boosting air chamber; the first nozzle is arranged at the end, away from the air compression chamber, of the expansion chamber, and an arc generation area is formed in the first nozzle. The moving arc contact is arranged at the front end of the piston, a first channel is arranged in the moving arc contact, one end of the first channel is communicated with the boosting air chamber, the other end of the first channel faces the arc generation area, a first one-way valve is arranged on the circumferential wall of the boosting air chamber, and the first one-way valve is configured to enable the boosting air chamber to be communicated with the expansion chamber in a one-way mode. The self-energy arc extinguishing device can make full use of expansion pressure caused by arc energy, and the voltage building capacity of the expansion chamber is greatly improved.

The invention discloses an automatic circuit breaker handcart for a switch cabinet, and belongs to the technical field of circuit breakers, the automatic circuit breaker handcart for the switch cabinet comprises a bottom frame, the bottom frame is movably provided with a circuit breaker handcart, the circuit breaker handcart is provided with a plurality of arc extinguish chambers, and the arc extinguish chambers are provided with moving contacts. A front frame is installed at one end, far away from the circuit breaker handcart, of the bottom frame, an aviation socket located on one side, far away from the circuit breaker handcart, of the front frame is arranged on the bottom frame, a signal lead is installed on the aviation socket, and a pushing assembly connected with the circuit breaker handcart is arranged between the circuit breaker handcart and the front frame. A movable transmission assembly movably connected with the pushing assembly is arranged in the bottom frame, moving assemblies movably connected with the movable transmission assembly are arranged on the two sides of the bottom frame, a camera and a temperature sensor are installed on the top of one side of the front frame, and a third contact sensor is installed on the bottom frame. The device has the advantages of intelligent detection, ordered movement, full contact of moving and static contacts, safety, reliability, convenient operation, simplicity, convenience and practicability.

The invention belongs to the technical field of switches, and particularly relates to a circuit breaker or an isolating switch, which is characterized in that a backflow channel structure is additionally arranged on the side wall of an arc extinguish chamber, after the circuit breaker or the isolating switch arches, an arc moves upwards, the pressure above the arc extinguish chamber is increased, and the pressure in a middle area of a moving contact and a static contact below the arc is reduced; the backflow channel is used for supplementing the upper cold gas to the post-arc space gas, arc falling is inhibited, and the arc extinguishing performance of the product is improved.

The utility model relates to a high-voltage direct-current relay. The high-voltage direct-current relay comprises a static contact and a moving assembly. The static contact is provided with a static contact point; the movable assembly comprises a pushing mechanism, a movable spring mechanism, an elastic element and a support, the pushing mechanism comprises a pushing seat, a pushing rod and a supporting structure, the pushing rod and the supporting structure are connected to the pushing seat, and the movable spring mechanism is arranged on the side, opposite to the pushing seat, of the supporting structure and is provided with a movable contact opposite to the static contact; the movable spring mechanism is elastically matched with the pushing mechanism through the elastic element, the support is connected to the pushing seat and is in sliding fit with the movable spring mechanism, and the supporting structure is provided with a supporting face which is arranged with the movable spring mechanism in a spaced mode. And the supporting surface can support the movable spring mechanism on a path in which the movable spring mechanism moves away from the static contact. The high-voltage direct-current relay has the advantages of being small in size, low in cost and high in short-circuit current and voltage resistance.

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker for electric power engineering, which comprises a shell, a first elastic conducting strip, a second elastic conducting strip and the like, a fixing structure is arranged on the lower portion of the shell, and a disconnecting structure is arranged in the shell. A first elastic conducting strip is connected in the shell; the first elastic conducting strip is fixedly connected with a second elastic conducting strip, and the first elastic conducting strip is connected with a disconnection structure in the shell. When a power line or equipment breaks down, a shifting ring rotates clockwise, a pull rope pulls a movable cylinder, a pressing rod, a limiting frame and a first elastic conducting strip to move rightwards, meanwhile, the limiting frame moves away from the upper portion of a push plate, and under the action of a spring in a compressed state, the push plate moves upwards to push an input wire and push the input wire out of a shell; and remote from the first elastic conductive sheet and the second elastic conductive sheet, electric arcs are prevented from being generated between the input wire and the first elastic conductive sheet and the second elastic conductive sheet in high-current applications.

The utility model relates to a circuit breaker, which comprises a shell, an operating mechanism, a moving contact, a static contact and an arc extinguishing mechanism, the operating mechanism, the moving contact, the static contact and the arc extinguishing mechanism are arranged in the shell, the arc extinguishing mechanism comprises an arc extinguishing chamber, the arc extinguishing chamber comprises a first arc extinguishing grid plate group, and the first arc extinguishing grid plate group is composed of a plurality of first arc extinguishing grid plates. The first arc extinguishing grid sheets are arranged along the horizontal direction or are arranged at an included angle of-alpha-alpha relative to the horizontal direction; the arc extinguish chamber comprises a second arc extinguish grid sheet group which is composed of a plurality of second arc extinguish grid sheets and is arranged below the first arc extinguish grid sheet group, and the inlet end of the second arc extinguish grid sheet group is close to the moving track of the moving contact. The second arc-extinguishing grid sheets are obliquely arranged at an angle beta relative to the horizontal direction, and the outlet ends of the second arc-extinguishing grid sheets incline towards the outlet end direction of the first arc-extinguishing grid sheet group; alpha is smaller than 20 degrees, and beta is larger than 45 degrees and smaller than 90 degrees. And by optimizing the layout of the arc extinguishing grid sheets, a more effective arc extinguishing effect is realized.

The invention relates to the technical field of circuit breaker assembling and manufacturing, in particular to a primary and secondary fusion pole-mounted circuit breaker and assembling equipment thereof.The pole-mounted circuit breaker comprises a main body, the main body is composed of a mechanism box and an arc extinguish chamber, the arc extinguish chamber is movably connected to the top of the mechanism box in an inserted mode, and assembling is conducted in an inserted installation mode; the assembling equipment comprises a rack, a material frame and a conveying frame for installing a conveying belt, a clamping mechanism and a deviation rectifying mechanism are installed on the two sides of the conveying frame correspondingly, a reciprocating driving mechanism is arranged between the material frame and the conveying frame, and a clamping mechanism used for positioning the mechanism box is arranged on the outer side of the conveying frame; the outer side of the conveying frame is further provided with a jacking mechanism used for pulling the pull column outwards, steering of the clamped arc extinguish chamber is automatically completed through the reciprocating driving mechanism, and the reciprocating driving mechanism is matched with the clamping mechanism and the deviation rectifying mechanism to complete automatic clamping of the arc extinguish chamber to be installed and installation direction correction.

A double-breakpoint circuit breaker for a direct current system is characterized in that the double-breakpoint circuit breaker comprises an operating handle (1), the operating handle (1) is linked with a rotating shaft (3) through an upper connecting rod (2), a jump pin (6) and a lock catch (7), the rotating shaft (3) is connected with a double-breakpoint moving contact system (a) through a lower connecting rod (4), and the rotating shaft (3) can be driven to rotate through the upper connecting rod (2), the jump pin (6) and the lock catch (7) in the rotating process of the operating handle (1). And the rotating shaft (3) can drive the double-breakpoint moving contact system (a) to move up and down through the lower connecting rod (4) in the rotating process, so that the double-breakpoint moving contact system (a) and the corresponding double-breakpoint static contact system (b) are contacted and separated to realize the on-off of the circuit breaker. According to the circuit breaker, the rotation of the handle is converted into the up-and-down movement of the moving contact system through the improvement of the rotating shaft structure and the installation position, the purpose of double breakpoints is achieved, and the up-and-down movement of the double-breakpoint moving contact system is not required to be linear movement. The moving contact keeps a trend of rotating towards two sides under the action of the pressure spring so as to realize close contact with the static contact assembly, the installation difficulty of a product is simplified, the reliability and the stability of motion transmission are improved, meanwhile, due to the layout of the whole circuit breaker, more arc extinguishing grid sheets can be arranged in the circuit breaker, and the breaking capacity of the circuit breaker is improved.

The invention provides a circuit breaker and power equipment. The circuit breaker comprises a shell, an operating handle, an operating mechanism, a through-flow assembly, an arc extinguishing chamber and an arc extinguishing module. And the operating handle, the operating mechanism, the through-flow assembly, the arc extinguishing chamber and the arc extinguishing module are sequentially arranged along the depth direction of the circuit breaker. The through-flow assembly comprises a moving contact assembly and a static contact. The operating mechanism is connected with the moving contact assembly. The operating handle is used for controlling the operating mechanism to drive the gas production connecting rod of the moving contact assembly to rotate, so that the moving contact is in contact with or separated from the static contact. The arc extinguish chamber is used for eliminating electric arcs generated when the moving contact is separated from the static contact. The arc extinguishing module is used for purifying gas sprayed out of the arc extinguishing chamber. All the mechanisms of the circuit breaker are arranged in the depth direction of the circuit breaker, the size in the height direction is small, and the number of circuit breakers capable of being arranged in a cabinet is increased. And when the moving contact is separated from the static contact, the gas production connecting rod is used for forming gas blowing, so that the arc passes through the arc extinguishing chamber along the depth direction to realize arc extinguishing, and the safety of the circuit breaker is improved.

An arc bypass assembly for use in a circuit breaker includes: an arc chute including a base, two arc sides extending from the base, and a plurality of arc plates arranged within the two arc sides, the arc chute structured to dissipate an arc upon opening of primary contacts of the circuit breaker during a high current event; an arc horn extending outwardly from a first edge of the base of the arc chute toward a primary stationary contact coupled to a line-in conductor, the arc horn structured to attract the arc; and an arc bypass wire coupled to the base of the arc chute at one end and to a secondary stationary arm of the circuit breaker at another end, where the arc bypass assembly is structured to redirect a portion of current generated during the high current event to the load.

The utility model discloses a multi-channel arc extinguish chamber structure and a frame circuit breaker with the same, the arc extinguish chamber structure comprises an arc extinguish chamber cover, arc extinguish chamber side shells and arc extinguish grid sheets, and an installation space is formed between the arc extinguish chamber side shells. A first gas production block, a second gas production block, N spacers made of insulation gas production materials and two arc striking pieces are further arranged in the installation space, the spacers are inserted into the arc extinguishing grid pieces from the bottom to form N + 1 strip-shaped spaces, and a plurality of sets of moving arc contacts are installed on the circuit breaker moving contact assembly. By means of the scheme, the problems that in the prior art, small-current electric arcs are not prone to being pushed into the arc extinguish chamber to be cut, and the electric arcs stay between the movable contacts and the static contacts, and contact points are prone to being damaged are solved. The technical effects of boosting to promote the small-current arc to quickly enter the arc extinguish chamber for arc extinguish and ensuring the on-off performance of the product are achieved.

The present application provides a circuit breaker and an electrical device. The circuit breaker comprises a housing, and an operating handle, an operating mechanism, a current-conducting assembly, and an arc extinguishing chamber which are sequentially provided in the housing along the depth direction of the circuit breaker. The operating mechanism comprises two mounting plates, a latch assembly, and at least one operating assembly. The operating assembly comprises a trip lever, an upper connecting rod, a lower connecting rod, and springs. Along the height direction of the circuit breaker, the latch assembly is located on one side of the rotating center of the trip lever, and the upper connecting rod and the lower connecting rod are located on the other side of the rotating center. Each mounting plate is provided with a limiting rod which is used for limiting rotation of the trip lever and the upper connecting rod when the latch assembly unlocks the trip lever. The upper connecting rod is provided with a limiting rod which is used for limiting the rotation angle of the trip lever during switching-on / switching-off. The mechanisms of the circuit breaker are provided along the depth direction, resulting in a smaller dimension along the height direction. In addition, the operating mechanism has a simple structure and allows for locking and unlocking, thereby facilitating the miniaturization of the circuit breaker, and thus allowing for an increased number of circuit breakers to be arranged within a cabinet.

The utility model discloses a high-voltage wire connector rapid switching circuit system based on a hot plug technology, which comprises a power supply module, a power supply switching module used for monitoring a power supply state of the power supply module and automatically changing a power supply mode, and a buffer module used for reducing switching influence, the power supply module is electrically connected with the power supply switching module and the buffer module; according to the utility model, the hot plug control circuit constructed by adopting a TPS2490 chip is matched with the slow start units R1-R6 and Q1-Q4 formed by connecting a plurality of MOS tubes in parallel and the hierarchical capacitor arrays C7-C12, so that dynamic impedance matching during plugging of the standby power supply is realized. The slope change of bus voltage is monitored in real time through the hot-plug voltage detection circuit, power supply switching over-transition is completed on the premise of keeping the continuity of load power, relay contacts are protected by arranging the buffer module, the switching efficiency is improved by reducing interference, and the reliability of power supply switching is improved. Compared with a traditional arc extinguishing mode, the switching influence can be reduced while the power is not influenced.

The invention discloses a circuit breaker device with a fireproof function and a method, and relates to the technical field of circuit breaker fire prevention. The device comprises an insulating shell and an insulating auxiliary shell, the insulating shell and the insulating auxiliary shell are the same in specification, the insulating auxiliary shell is fixedly installed on one side of the insulating shell, a circuit breaker assembly and an active circuit breaking protection assembly which are used for protecting a circuit are arranged in the insulating shell, and the two ends of the insulating shell are each provided with an auxiliary clamping assembly used for limiting a wire. According to the invention, through the arrangement of the active circuit break protection assembly and a dual circuit break mechanism of component conventional short circuit protection and active temperature linkage protection, when the conventional short circuit protection mechanism is not triggered due to a fault, the electromagnetic coil continuously bears large current to generate joule heat, and after the temperature sensor monitors a supercritical temperature, the electromagnetic coil is switched on; a temperature control signal is transmitted to the active circuit breaking protection assembly to trigger the active circuit breaking protection assembly depending on a miniature electric telescopic rod, a lifting block and other structures, a turnover block is driven to turn over, a circuit is forcibly broken, and fire hazards caused by heating due to faults are effectively avoided.

The invention discloses a breaking assembly, a circuit breaking device, a motor control system and a vehicle, relates to the technical field of vehicles, and aims at solving the problem that a traditional circuit breaking device is large in vibration. The disjunction assembly may include a housing and two disjunction members. A sliding cavity is formed in the shell, the two breaking pieces are contained in the sliding cavity in a sliding mode, a power device is arranged on the portion, located between the two breaking pieces, of the sliding cavity, the power device can push the two breaking pieces to move in the opposite directions, and each breaking piece is suitable for breaking the corresponding connecting conductor. The breaking assembly and the circuit breaking device provided by the invention are balanced in overall stress, small in generated vibration, and beneficial to stable operation of the circuit breaking device.

The invention discloses a circuit breaker arc extinguishing device, and relates to the technical field of circuit breaker arc extinguishing, the circuit breaker arc extinguishing device comprises a main arc extinguishing module, an auxiliary arc extinguishing module and a cleaning module, the auxiliary arc extinguishing module is installed at one end of the main arc extinguishing module, and the main arc extinguishing module and the auxiliary arc extinguishing module are used for sequentially contacting and extinguishing arcs; the cleaning module is installed on one side of the main arc extinguishing module, and the cleaning module is used for cleaning the interior of the main arc extinguishing module. The arc extinguishing device can realize continuous and sufficient arc extinguishing and is long in service life.