70 results about "Thermal cutoff" patented technology

The utility model discloses a heating seat ring and intelligent cover plate, the heating seat ring comprises a seat ring upper shell, a heating film and a seat ring lower shell, the seat ring upper shell is provided with a cavity enclosed by side plates, the cavity is provided with an upper opening and a side opening, a film body of the heating film is provided with a protruding part, the protruding part extends into the cavity through the side opening, and the heating film is arranged in the cavity. A sealing plate used for sealing the side opening is arranged on the side opening, and a temperature fuse is arranged in the cavity and tightly attached to the protruding part. The protruding part of the heating film is arranged in the cavity, the temperature fuse is installed after injection molding is completed, the protruding part of the heating film is communicated with the heating wire of the whole heating film, and therefore the temperature fuse can effectively sense the heating temperature of the heating film in the seat ring, and the situation that the temperature fuse is fused due to the high temperature of secondary injection molding can be avoided; the temperature of the heating film can be effectively sensed, the heating film is intact and not damaged during injection molding, and potential safety hazards are avoided.

The invention discloses a quick response type temperature fuse which comprises a shell, a bimetallic strip arranged on the shell, a tripping device, a first electrode, a second electrode and an electrical breaking device arranged between the first electrode and the second electrode in a bridging mode. The two ends of the tripping device abut against the movable end of the bimetallic strip and the electrical breaking device respectively. The bimetallic strip is close to the shell; when the bimetallic strip is heated to deform, the tripping device and the electrical breaking device are pushed to be separated from the abutting state. The electrical breaking device is kept in a conducting state under the action of external force applied by the tripping device, and the electrical breaking device is in a disconnected state when the external force is removed. According to the invention, the advantages of two technologies of a bimetallic strip and a low-melting-point alloy are integrated, the defects of the two technologies are overcome, the user experience is improved, and the product performance is also greatly improved.

The utility model discloses a quick response type temperature fuse. The quick response type temperature fuse comprises a shell, a bimetallic strip, a tripping device, a first electrode, a second electrode and an electrical breaking device, wherein the bimetallic strip, the tripping device, the first electrode and the second electrode are arranged on the shell; the electrical breaking device is arranged between the first electrode and the second electrode in a bridging manner; the two ends of the tripping device abut against the movable end of the bimetallic strip and the electrical breaking device respectively. The bimetallic strip is close to the shell; when the bimetallic strip is heated to deform, the tripping device and the electrical breaking device are pushed to be separated from the abutting state. The electrical breaking device is kept in a conducting state under the action of external force applied by the tripping device, and the electrical breaking device is in a disconnected state when the external force is removed. According to the utility model, advantages of two technologies of a bimetallic strip and a low-melting-point alloy are integrated, disadvantages of the two technologies are overcome, user experience is improved, and product performance is greatly improved.

The invention relates to the technical field of thermal fuses, in particular to a thermal fuse, a carrier tape, an onboard, a protection device and a manufacturing method. The temperature fuse comprises a first electrode, a second electrode, a temperature sensing alloy and a shell. An accommodating space is formed in the shell; the first electrode and the second electrode are respectively provided with a first end part and a second end part which are opposite; the first end part of the first electrode and the first end part of the second electrode are oppositely arranged in the accommodating space at an interval; the temperature sensing alloy is positioned in the accommodating space and is electrically contacted with the first end part of the first electrode and the first end part of the second electrode respectively; through holes are formed in the positions, located at the first end of the first electrode and the first end of the second electrode, of the shell respectively. Through the arrangement, the product size is reduced while the welding quality is improved, and the stability and the performance of the product are effectively improved.

A power conversion device having a temperature determination function is provided. The power conversion device is disposed on a light fixture and includes a housing, a power converter, and at least one temperature determination component. The power converter and the temperature determination component are disposed within the housing, and the temperature determination component is a temperature fuse. When an ambient temperature of the power converter reaches a preset temperature, the temperature determination component melts to indicate that the power converter is used under the abnormal ambient temperature. Accordingly, the ambient temperature of the power converter can be determined to be abnormal.

The utility model discloses a multi-temperature-control PTC heating structure which comprises a PTC heater, a temperature control box and a temperature detection assembly. The temperature detection assembly is arranged on the PTC heater and used for detecting the temperature of the PTC heater, and the corresponding end of the temperature detection assembly is further electrically connected with the corresponding end of the temperature control box and used for feeding back detected temperature information of the PTC heater to the temperature control box; the temperature control box is detachably arranged on the PTC heater, and a thermal protector and a thermal fuse are integrated in the temperature control box; the corresponding ends of the thermal protector and the temperature fuse are electrically connected with the corresponding end of the PTC heater; the thermal protector is used for automatically disconnecting a circuit to prevent overheating when the temperature of the PTC heater exceeds a preset safety threshold value. According to the utility model, the temperature of the PTC heater can be accurately controlled, the temperature requirements in different application scenes can be met, and the PTC heater has wide application prospects.

The invention discloses a temperature fuse assembly machine, aiming to provide a temperature fuse assembly machine with high automation, simple structure and strong practicality. The key points of the technical scheme are as follows: a loading station on a frame loads a main shell body, a thermosensitive pill loading station loads a thermosensitive pill, a first copper sheet loading station loads a copper sheet, a drum spring loading station loads a drum spring, an eight-claw fixed sheet loading station loads the eight-claw fixed sheet and forms a pressing material, ensuring that a bowl-shaped fixing effect is formed when the eight-claw fixed sheet is punched, a spring loading station loads a spring, a magnetic bead loading station loads a batch of magnetic beads and punches and matches them to form a finished product, and a unloading station arranges the finished product on a plate. A processing flow is adopted to realize a full set of automated production, which not only increases the processing efficiency, but also improves the yield rate. The production speed can reach 60-70 pieces / min. The invention is applicable to the technical field of temperature fuse assembly equipment.

The utility model relates to the technical field of fuses, in particular to a temperature fuse with an overcurrent protection function. The thermal fuse comprises a first electrode, a second electrode, a fusible core and a packaging layer. The two sides of the fusible core are connected with the first electrode and the second electrode respectively. The encapsulation layer covers the fusible core, the first electrode and the second electrode. The first end of the first electrode is closer to the fusible core than the second end, and the third end of the second electrode is closer to the fusible core than the fourth end. The first electrode has a first resistance value and a second resistance value at the first end and the second end respectively, the second electrode has a third resistance value and a fourth resistance value at the third end and the fourth end respectively, the first resistance value is larger than the second resistance value, and the third resistance value is larger than the fourth resistance value. Therefore, when the fuse works under the rated current, the heating and the power consumption are relatively low, and the fuse works normally; and the fusible core can be melted by increasing the temperature rise of the fusible core in a small-multiple overcurrent state, so that the fusible core is broken.

The present invention belongs to the technical field of temperature fuses, and in particular relates to a high-voltage DC temperature fuse, comprising: a housing, an internal sliding sleeve of the housing is provided with a connecting sleeve, the ends of the housing and the connecting sleeve that are away from each other are fixedly connected to a first conductor and a second conductor respectively, a movable cavity is opened at the center of the connecting sleeve, a temperature sensor is provided in the movable cavity, and the two ends of the temperature sensor are in contact with the first conductor and the second conductor respectively. The present invention provides an automatic ejection mechanism and utilizes the synergistic effect of thermal expansion and contraction liquid and hydraulic oil. When the temperature of the temperature sensor rises slightly, the thermal expansion and contraction liquid will expand rapidly, pushing the first piston ring and the second piston ring to move, thereby quickly triggering a series of subsequent actions, pushing the temperature sensor out and cutting off the circuit. It can respond quickly to a wider range of over-temperature conditions, greatly shorten the time difference of over-temperature protection, and more comprehensively protect various components in the circuit.

This invention discloses a heat-absorbing layer for a metal oxide varistor. A thermally protected metal oxide varistor (TMOV) device includes: an MOV chip; a first electrode disposed on a first side of the MOV chip; a second electrode disposed on a second side of the MOV chip opposite to the first side; a conductive first lead connected to the first electrode; a heat-absorbing layer bonded to the second electrode by a heat-absorbing paste formed from a mixture of silica sand, melamine cyanurate, and silicone resin, wherein the heat-absorbing paste is formed from a mixture of melamine cyanurate and silicone resin; a thermal cutoff (TCO) element extending through pores in the heat-absorbing layer and having a first end electrically connected to the second electrode by a certain amount of solder having a melting temperature lower than the melting temperature of the TCO element; and a conductive second lead electrically connected to the second end of the TCO element.

The utility model relates to the technical field of fuse welding auxiliary tools, and provides tweezers which are used for solving the technical problem that a temperature fuse is prone to fusing during welding. The tweezers comprise tweezer arms, a heat absorption piece and a heat conduction piece, each tweezer arm is provided with a first end and a second end, the first ends of the two tweezer arms are connected and fixed, and the second ends of the two tweezer arms are arranged at intervals; the heat absorbing piece is connected to the second end of the tweezers arm and is used for being in contact with a clamped object to absorb heat; the heat conduction parts are provided with heat collection ends and heat dissipation ends, the heat conduction parts are arranged on the tweezers arms, the heat collection ends of the heat conduction parts are connected with the heat absorption parts, the heat dissipation ends of the heat conduction parts extend in the direction away from the second ends of the tweezers arms, and the heat collection ends conduct heat from the heat absorption parts to the heat dissipation ends for heat dissipation. The tweezers can be clamped at the clamping point of the thermal fuse in the welding process so as to absorb heat on the pins, the temperature directly transmitted to the interior of the fuse body by the pins is reduced, and therefore the welding yield of the thermal fuse can be improved.

The application provides a design method and device of a super-deep cold component thermal cutoff part and related equipment, and comprises the following steps: establishing a design domain of a thermal cutoff part on a main support structure connected with a liquid nitrogen cavity and an outer Dewar cavity; obtaining a target distribution position of the thermal cutoff part through thermal coupling topological analysis; performing parameterized modeling at the target distribution position; performing parameter optimization to obtain a target shape of the thermal cutoff part; and checking the thermal cutoff part with the target shape at the target distribution position. The design method optimizes the distribution position and shape of the thermal cutoff part, specifically, the optimal distribution position of the thermal cutoff part is determined by using a structure topological optimization method, and the optimal shape of the thermal cutoff part is determined by using a structure parameter optimization method, so that the heat from the outside is as low as possible to be transmitted to the superconducting coil.

A temperature fuse assembly for a high-power DC circuit is provided. The temperature fuse assembly includes a case extending from a first case end to a second case end and an isolated lead projecting from the second case end. A bushing electrically isolates the isolated lead from the case. A high-gauge wire is electrically connected to the case at a first wire end and electrically connected to the isolated lead at a second wire end. A portion of the high-gauge wire is helically wound about an exterior of the bushing. When a temperature of the temperature fuse assembly exceeds a threshold temperature, the temperature fuse assembly is configured to conduct a DC current of the high-power DC circuit through the high-gauge wire. The high-gauge wire is configured to melt under a load of the DC current and interrupt the high-power DC circuit.

An air conditioning appliance may include an air plenum, a recovery casing, a first recovery exhaust fan, a heat exchanger core, and a thermal cutoff. The recovery casing may be attached to the air plenum. The recovery casing may define an outdoor casing inlet downstream from the air plenum and an indoor casing outlet downstream from the outdoor casing inlet along an external recovery flow path. The recovery casing may further define an indoor casing inlet and an outdoor casing outlet along an internal recovery flow path. The first recovery exhaust fan may be mounted within the recovery casing along the external recovery flow path. The heat exchanger core may be disposed along the external recovery flow path and the internal recovery flow path. The thermal cutoff may be mounted within the recovery casing in operable communication with the first recovery exhaust fan.

The utility model relates to the technical field of electric heating, aims to solve the problems that in the prior art, an electric heating film overheating protection system is inconvenient to install and fix on a carbon fiber electric heating film and low in construction efficiency, and provides an installation shell of an electric heating film overheating protection system. The base and the panel are used for being installed on the two sides of a carbon fiber electrothermal film respectively, the panel is detachably connected with the base, an installation groove is formed in the inner side of the base, and a temperature fuse of an electrothermal film overheating protection system is installed in the installation groove; the base is further provided with a wire outlet groove, and the wire outlet groove is used for a pin or a lead of the thermal fuse to pass through. The electric heating film overheating protection system is simple in structure and convenient to install, the electric heating film overheating protection system can be rapidly and conveniently installed on the carbon fiber electric heating film, construction efficiency can be improved, the situation that the electric heating film overheating protection system is neglected or even not installed on a construction site can be eradicated, and reliability and safety of the electric heating system can be improved.

The application provides a method and device for MCU mode fuse protection when power electronic switch fails, relates to the technical field of power electronic protection, and comprises the following steps: obtaining a target fusing temperature set by a user in advance through a dial switch, a real-time environment temperature of a temperature fuse and a real-time atmospheric environment temperature; performing self-diagnosis and judgment on the temperature fuse based on the real-time environment temperature of the temperature fuse and the real-time atmospheric environment temperature; dynamically controlling a heating module to heat the temperature fuse; when the real-time environment temperature of the temperature fuse is greater than the target fusing temperature, the temperature fuse is fused, so that the heating module is synchronously powered off to stop heating, and the circuit loop is cut off through the fusing of the temperature fuse. The application can completely solve the industry safety pain point that the main switch cannot be disconnected after failure.

To provide a vehicle air conditioner that can avoid an unusable state caused by unintended fusion of a temperature fuse by maintaining heat dissipation of a register even when installed in an upper section of a vehicle, and to provide a vehicle superstructure with the vehicle air conditioner installed thereto.SOLUTION: A vehicle air conditioner 106 is installed on a roof panel 104 on a vehicle interior side of a vehicle 102. The vehicle air conditioner comprises: a wall section 116 which is part of an external surface of the vehicle air conditioner and partitions a predetermined storage space 122; an insertion hole 124 provided on the wall section; an output adjusting section 130 which is inserted into the insertion hole and stored in the storage space to adjust output of the vehicle air conditioner; and a bracket 132 which is connected to the output adjusting section and externally covers the insertion hole. The output adjusting section includes a temperature fuse 134 made of a fusing material which melts when a temperature reaches a fusing temperature, thereby cutting off electric energization. The bracket covers the insertion hole with a predetermined first gap 140 from the wall section, thereby allowing the storage space to communicate with an exterior of the wall section.SELECTED DRAWING: Figure 2

An air conditioner unit may include a bulkhead that may define an indoor portion and an outdoor portion. The air conditioner unit may also include an indoor fan that may be positioned within the indoor portion for selectively urging a flow of air through an indoor heat exchanger. The air conditioner unit may further include one or more heater banks for selectively heating the flow of air. The air conditioner unit may also include a heater control assembly that may include a thermal cutoff switch mounted adjacent the one or more heater banks for cutting off power to the one or more heater banks when a predetermined temperature is reached. The heater control assembly may also include a first temperature sensor positioned upstream of the thermal cutoff switch. The heater control assembly may further include a second temperature sensor positioned downstream of the thermal cutoff switch.

The present application relates to the field of temperature fuse, in particular to a temperature fuse capable of reflow soldering and a reflow soldering method thereof. The present application discloses a temperature fuse capable of reflow soldering and a reflow soldering method thereof, wherein the temperature fuse capable of reflow soldering comprises an insulating shell, a fixed electrode, an elastic electrode and a thermal element, the fixed end of the fixed electrode and the elastic end of the elastic electrode are located in the insulating shell, the elastic end of the elastic electrode is fixedly connected with the fixed end of the fixed electrode through the thermal element after elastic deformation, the elastic electrode has soft magnetism, and is used for interacting with a magnetic field to generate magnetic attraction force so as to limit the elastic end of the elastic electrode from separating from the fixed end of the fixed electrode. The temperature fuse of the present application can be reflow soldered, has simple structure, is easy to realize, and is easy to realize large-scale production.

To reduce the risk of malfunction when a large current accidentally flows.SOLUTION: A protection element 14 includes a case 42, a thermal fuse element 34, and a current fuse element 36. The thermal fuse element 34 is housed in the case 42. The current fuse element 36 is housed in the case 42. The current fuse element 36 has a higher melting point than the thermal fuse element 34. The thermal fuse element 34 and the current fuse element 36 are connected in parallel.SELECTED DRAWING: Figure 1

The invention, which relates to the technical field of the power adapter, discloses an abnormal external ultrahigh-voltage input shell-melting-prevention circuit comprising a power adapter shell, a circuit board, and an input rectification filtering unit. The input rectifying and filtering unit comprises a fuse F1, a fuse F2, a temperature fuse TF1, a lightning protection device piezoresistor MOV1 and an input electrolytic capacitor CX1; on the AC input side, a fuse F1 and a fuse F2 form a double-insurance circuit, a temperature fuse TF1 and a piezoresistor MOV1 form a series circuit, and the temperature fuse TF1 is tightly attached to the piezoresistor MOV1; through the circuit design of double insurance and introduction of the temperature fuse, multiple open-circuit protection is formed, and the risk of plastic shell fusion caused by short circuit of devices can be effectively avoided. An electrolyte absorption structure is arranged in the power adapter shell, when an electrolyte is sprayed out after a top explosion-proof valve of an input electrolytic capacitor CX1 is opened, the electrolyte is absorbed, and the situation that the electrolyte falls on a circuit to cause short-circuit heating or shell melting through caused by fire is reduced.

According to the invention, the possibility of false operation when large current accidentally flows through the ground is reduced. The protective element (14) has a housing (42), a temperature fuse element (34), and a current fuse element (36). The thermal fuse element (34) is housed in the housing (42). The current fuse element (36) is housed in the housing (42). The melting point of the current fuse element (36) is higher than the melting point of the temperature fuse element (34). The thermal fuse element (34) and the current fuse element (36) are connected in parallel.

The present application relates to the technical field of fuses, and in particular to a thermal fuse having stranded-wire leads, and a device. The thermal fuse having stranded-wire leads comprises: a housing and leads, wherein the housing is internally provided with a fuse link, the leads include a first lead and a second lead, and a tail end of the first lead and a tail end of the second lead respectively form an integrated first joint and an integrated second joint. Thus, by conducting processes such as fusion welding and extrusion on stranded wires in each of the first lead and the second lead, the integrated first joint and the integrated second joint having smooth surfaces and no gaps are formed. The first joint and the second joint can be directly welded to the fuse link, thereby solving the technical problem that stranded loose wires under conventional conditions cannot be directly welded to a fuse link, and eliminating the need of a conventional approach of secondary welding by means of external terminals.

The invention relates to the technical field of photonics, in particular to a temperature fuse mechanism based on two-dimensional ferroelectric perovskite and application, and the temperature fuse mechanism comprises a fuse which is made of a ferroelectric perovskite material; the optical detection unit is used for detecting the optical signal change of the fuse and converting an optical signal into an electric signal; the signal processing unit is electrically connected with the optical detection unit and is used for comparing the electric signal with a preset critical value; and the control circuit unit is electrically connected with the signal processing unit and is used for controlling the circuit to be switched between a loop state and an open circuit state. According to the invention, by using the change of nonlinear absorption characteristics caused by the structural change of the ferroelectric perovskite material at different temperatures, the signal is cut off. Moreover, the nonlinear absorption characteristic of the ferroelectric perovskite is reversible, the ferroelectric perovskite is cut off when the preset critical temperature is reached, and then the ferroelectric perovskite can be repeatedly used, so that the cost is greatly reduced, and the utilization rate is improved.

The utility model relates to fuse technology field especially relates to a high heat transfer quick response temperature fuse. The high heat transfer quick response temperature fuse includes temperature fuse body and heat conduction spare, and the main part of heat conduction spare is pasted around the shell peripheral surface of temperature fuse body, the first wing piece of the first end of main part is equipped with the direction of extending away from temperature fuse body, and / or, the second wing piece of the tail end of main part is equipped with the direction of extending away from temperature fuse body, the first wing piece and second wing piece are used for with the surface contact of heating component. When installing the temperature fuse, the main part of heat conduction spare is pasted in the fuse main part periphery, and the wing piece can be pasted on the surface of heating component to expand the contact area of temperature fuse and heating component, which is favorable to the heat of heating component to accelerate transmission to temperature fuse, thereby improving the response rate of temperature fuse.

The utility model relates to the field of electronic tags, especially a temperature monitoring passive electronic tag, including radio frequency circuit module and detection circuit module and temperature fuse, radio frequency circuit module is connected with detection circuit module electricity, the temperature fuse is in series on detection circuit module, radio frequency circuit module detects the circuit state of detection circuit module, after the label configuration, its through the temperature fuse of detection circuit module senses the temperature change of the monitored article, when the monitoring temperature reaches the set temperature, the temperature fuse fuses, and the circuit state of detection circuit module changes, so that the information feedback of radio frequency circuit module changes when being identified by the reader, and further realizes the judgment whether the equipment is in the overtemperature state, and can do the preventive maintenance and overhaul in advance.

The invention provides a battery thermal management system and a thermal fuse thereof, and relates to the technical field of fuses. The temperature fuse comprises a shell provided with a first cavity and a second cavity, a temperature sensing assembly arranged in the first cavity, a fuse wire arranged in the second cavity, a first electrode piece connected to one end of the temperature sensing assembly and one end of the fuse wire respectively, and a second electrode piece connected to the other end of the temperature sensing assembly and the other end of the fuse wire respectively. The first cavity is provided with special resin; arc extinguishing particles are distributed in the second cavity; the temperature sensing assembly comprises a temperature sensing conductor or at least two temperature sensing conductors which are connected in series through a connecting conductor. According to the temperature fuse, quick response and protection on temperature and current abnormity in a battery thermal management system are realized, and the safety and reliability of the system are improved.

The utility model discloses an external feedback device suitable for dry powder fire extinguishing equipment, a feedback device body comprises a feedback joint, a feedback line, a straight-through, an aluminum tube, a glass fiber tube, a thermosensitive line, a cartridge bag and a temperature fuse, the thermosensitive line is respectively connected with the cartridge bag and the temperature fuse, and the temperature fuse is respectively connected with the feedback line and the feedback joint in a matching way. The feedback connector, the feedback line, the thermosensitive line, the medicine bag and the temperature fuse are respectively connected with the glass fiber tube in a matched mode, and the thermosensitive line is connected with the straight-through tube in a matched mode through the aluminum tube. The device is simple in structure, convenient to install, simple and understandable to operate, unique in starting mode and safe and reliable to use.

The utility model discloses a heating control structure in a dual-power mode, which relates to the technical field of photovoltaic water heaters and comprises a metal oxide semiconductor (MOS) module. The MCU controls the driving module; the temperature protection module is provided with a temperature fuse, and when the MCU control driving module controls driving and detects that the temperature of a certain module is too high during abnormal work, the temperature fuse is disconnected to cut off photovoltaic power; and the voltage stabilizing module is used for voltage protection when the MCU controls the driving module or the MOS module to be started. According to the utility model, after the commercial power is cut off, the MOS is driven in a manner of cascade driving of the two triodes, so that the grid electrode of the MOS is kept at a low level after power failure, and the level of the control electrode of the MOS is prevented from rising, thereby avoiding damage to the MOS tube, improving the use effectiveness of a commercial power system, and reducing the use cost of the MOS tube; and voltage stabilization protection and temperature safety protection are provided for the driving MOS module through the voltage stabilization module and the temperature protection module, so that the safety of the system is greatly enhanced.