66results about How to "Implement overheating protection" patented technology

The invention relates to the technical field of the production of lithium ion batteries, and provides a positive temperature coefficient material used for heat safety protection of a lithium ion battery, and an application thereof. The positive temperature coefficient material is prepared through mixing 30-35% by mass of an epoxy resin A adhesive, 30-35% by mass of an epoxy resin B adhesive, 25-35% by mass of Super-P, and 5-8% by mass of Al2O3. The positive temperature coefficient material has the advantages of stable PTC characteristic, small resistance at room temperature, appropriate lift-drag ratio, and good cycle performance, and provides a safe mechanism for the overheat protection of the lithium ion batteries.

The invention discloses a high-and-low-temperature cycle performance testing device for several kinds of devices. The testing device comprises an outer circulation system, an inner circulation systemand a control system. The outer circulation system and the inner circulation system share one heat exchanger; and a refrigerant circulation passage and a circulation liquid circulation passage are arranged in the heat exchanger. The outer circulation system includes a circulation liquid tank, a three-way valve, and a heat exchange tube that is sleeved on to-be-tested equipment; the outlet of the circulation liquid tank is connected to an inlet of the circulation liquid circulation passage of the heat exchanger; a first inlet of the circulation liquid tank is connected to a first port of the three-way valve and a second inlet of the circulation liquid tank is connected to the heat exchange tube; a second port of the three-way valve is connected to the outlet of the circulation liquid circulation passage of the heat exchanger; and a third port of the three-way valve is connected to the heat exchange tube. According to the high-and-low-temperature cycle performance testing device, the temperature control is carried out precisely; the temperature is stable; the real working conditions can be simulated; and the high-and-low-temperature cycle performance testing device is suitable for high-and-low temperature testing of various devices.

The invention relates to an anti-overheating capacitor, comprising a plurality of capacitors and a metal shell of the capacitors, wherein all the capacitors are placed in the metal shell, the metal shell is internally hollow, and is provided with a water inlet and a water outlet, the water inlet is arranged at the bottom of the metal shell, the water outlet is arranged on the top of the metal shell, and a heat-conducting medium enters the metal shell through the water inlet and finally flows out from the water outlet. According to the anti-overheating capacitor, the heat-conducting medium is enabled to circularly flow in the metal shell of the capacitors for leading out extra heat, and temperature sensors are also arranged among the capacitors, so that the interior temperature can be monitored at any time, and an alarm is given in suitable time. The anti-overheating capacitor realizes temperature dropping and overheating protection for the capacitors, is simple in structure and good in implementation effect and effectively solves the overheating problem of the capacitors.

The invention discloses an overheating protection control circuit of a frequency-variable compressor, a frequency-variable compressor system and a refrigerator. The overheating protection control circuit of the frequency-variable compressor comprises a temperature protector, a protection signal detection circuit and a driving control module, wherein the temperature protector corresponds to the frequency-variable compressor; when the temperature of the frequency-variable compressor is greater than a first preset threshold value, the temperature protector is in an off state; the protection signal detection circuit is used for outputting a detection signal according to an on state or the off state of the temperature protector; and the driving control module is used for receiving the detection signal and controlling the frequency-variable compressor according to the detection signal. The overheating protection control circuit disclosed by the invention is simple in structure and high in reliability, can effectively realize overheating protection of the frequency-variable compressor and effectively avoid impact on devices such as a frequency-variable controller and the frequency-variable compressor due to forced outage, thus prolonging the service lives of the devices, and hardly causes electromagnetic interference.

The invention discloses an embedded ultrasonic motor drive controller, and the controller comprises an external clock, a microcontroller module, a power amplification and matching module, a position sensor interface module, a motion control card interface module, a circuit protection module, a display interface module, a communication interface module and a power conversion unit module, wherein the external clock provides a time reference for the microcontroller module. A signal generated by the microcontroller module is used for driving a to-be-controlled ultrasonic motor. The position sensor interface module collects position information, and feeds back the position information to the microcontroller module. The motion control card interface module supplies an enabling signal, a position instruction signal and a speed instruction signal to the microcontroller module. The circuit protection module provides a function of motor connection protection and functions of overheating, overvoltage, undervoltage and overcurrent protection. The display interface module and the communication module provide man-machine interaction windows for a drive controller. The drive controller is good in universality, is diversified in control parameters, is easy for the integration of a plurality of control modes, and facilitates the implement of high-precision control of an ultrasonic motor.

The invention discloses an overheat and overcurrent protection device, a motor and an overheat and overcurrent protection method thereof. The device comprises a temperature detection unit (10) for detecting the current temperature of an electronic commutation control circuit of a motor to be protected; a biasing unit (20) for converting the current of the motor to be protected at the current temperature into a current overheat feedback voltage of the motor to be protected and transmitting the overheat feedback voltage to a non-inverting input terminal of a comparator (30); and a comparator (30) for outputting a first reverse level signal to a power module of a motor to be protected in a case where the current overheat feedback voltage is greater than a set reference voltage to start an overheat protection mode of the motor to be protected. The scheme of the invention can solve the problem of low reliability of overheat protection caused by slow overheat protection reaction of the chipin the electronic commutation control circuit of the motor, and achieve the effect of improving the reliability of overheat protection.

The invention relates to a convertor with switching element temperature protection function. The convertor comprises converting circuit, a radiator, a temperature detecting circuit, a controlling circuit, a radiator allowable temperature computing device, an overheat processing device, a current detecting circuit, a pulse-width modulation (PWM) controlling device, a carrier frequency setting device and a reference value setting device, wherein the radiator allowable temperature computing device comprises a first computing device and a second computing device. The convertor is characterized in that the computing relationship of the first computing device meets the condition. The convertor is capable of easily, accurately and reliably computing the allowable temperature, can realize the overheat protection of the switching elements of a transducer without sacrificing the design redundancy and has small volume and low cost.

The invention provides a phase change heat storage solar water heater with an anti-overheating structure. The phase change heat storage solar water heater comprises a water inflow pipe, a water outflow pipe, a phase change heat storage solar water heater body and a radiator. Heat insulation cladding and multiple parallel vacuum tubes are arranged in the phase change heat storage solar water heater body. Phase change heat storage materials are located in the vacuum tubes. The radiator comprises heat conduction rods and cooling fins. The phase change heat storage solar water heater is characterized in that the parallel vacuum tubes are covered with thermotropic scattering layers; and when the temperature of the phase change heat storage materials is higher than the light-transmitting change threshold temperature of the thermotropic scattering layers, light transmitting of the thermotropic scattering layers is changed into scattering, sunlight radiation is prevented from reaching the vacuum tubes, the sunlight radiation is scattered to the surfaces of the heat conduction rods, the sunlight radiation is absorbed by the heat conduction rods and converted into heat, and the heat is transferred to the cooling fins of the radiator for heat dissipation, so that temperature rise of the phase change heat storage materials is avoided, and overheating protection for the phase change heat storage solar water heater is achieved.

The invention discloses a pneumoperitoneum tube device with real-time displaying and temperature adjusting functions. The pneumoperitoneum tube device comprises an air heating device and an air detecting, displaying and adjusting device, wherein the air detecting, displaying and adjusting device is connected with the air heating device; the air heating device is connected with a pneumoperitoneum tube (14) through an air intake tube (12), and is also connected with an air exhaust tube (3) which extends into an abdominal cavity. The pneumoperitoneum tube device has the advantages that the structure is simple, and the convenience in operation and use is realized; the pneumoperitoneum tube device is connected with the air exhaust tube of the pneumoperitoneum device, and the temperature of air which is sent into the abdominal cavity can be monitored, displayed and adjusted in real time, so as to realize the overheat protecting function, guarantee that the temperature of the air entering the abdominal cavity of a patient is the optimum temperature for check and operation, and greatly reduce the complication caused by low temperature of the patient; the accuracy and success rate of check and operation by a doctor are improved, and the necessary auxiliary equipment is provided in the use process of the pneumoperitoneum machine.

The invention relates to a pre-charge loop of a traction converter and a control method. The pre-charge loop comprises a first heavy pre-charge circuit and a second heavy pre-charge circuit which arerespectively connected with the secondary side windings of a traction transformer, a first heavy four-quadrant rectifier module connected in series with the first heavy pre-charge circuit and a secondheavy four-quadrant rectifier module connected in series with the second heavy pre-charge circuit, wherein the output end of the first heavy four-quadrant rectifier module is connected with a first middle direct-current supporting capacitor FC11 at the input end of a middle direct-current voltage loop, and the output end of the second four-quadrant rectifying module is connected with a second middle direct-current supporting capacitor FC12 at the input end of the middle direct-current voltage loop. The invention is provided with double pre-charge circuits. Two four-quadrant rectifier modulesshare a bus of the middle direct-current voltage loop, so that the traction converter is provided with a hardware condition of single four-quadrant operation. The power availability of the traction converter is improved, and the robustness is high.

The invention discloses vertical efficient fermentation equipment for an organic fertilizer. The equipment comprises a fermentation tank, a motor and heating wires; a first partition board and a second partition board are welded inside the fermentation tank; the first partition board is located above the second partition board; the first separation plate and the second separation plate divide theinterior of the fermentation tank into a temperature change chamber, a homogenization chamber and a temperature preservation chamber from top to bottom; and a first partition valve and a second partition valve are respectively arranged at the middle positions of the first partition board and the second partition board. The equipment provided by the invention is provided with the temperature preservation chamber, the temperature change chamber, the second partition valve, the first partition valve and the homogenization chamber. When fermentation operation is carried out, materials enter a heating stage and a high-temperature stage in the temperature change chamber; the first partition valve is started after the materials reach a high temperature stage; the obtained compost is introduced into the homogenization chamber; turning and secondary heating are carried out in the homogenization chamber; the compost enters a cooling stage; and finally, the second separation valve is started, sothat the compost enters the heat preservation chamber, and enters a heat-preservation stage.

The invention provides an oil-immersed distribution transformer overheating protection method featured by comprising the following steps: embedding an overheating protection system in an electronic intelligent low voltage breaker; enabling the overheating protection system to integrate distribution transformer load current values obtained in a continuous monitoring time so as to obtain an equivalent load, calculating the winding maximum hot point temperature value according to an environment temperature, an equivalent load current and a continuous time, and determining whether to execute a release motion or not according to the winding maximum hot point temperature value and thus automatically cutting off the distribution transformer from the power grid; enabling the overheating protectionsystem to determine the monitored distribution transformer oil surface temperature size, thus determining whether to execute the release motion so as to automatically cut off the distribution transformer from the power grid or not, and carrying out overheating protection for the distribution transformer. The distribution transformer overheating protection method can reasonably, accurately and reliably automatically cut off the distribution transformer from the power grid under overheating conditions, thus intelligently and automatically protecting the distribution transformer.

The invention relates to a sound equipment high-temperature protection method and system. The method is based on a sound equipment control system. The sound equipment control system comprises a control center and a plurality of sound equipment. The method comprises the steps that the control center periodically obtains feature information after a power amplifier in each sound device is turned on, wherein the feature information comprises the working temperature and the output power of the power amplifier; the method also includes comparing the working temperature of the power amplifier with a preset temperature threshold value; and when the working temperature of a certain power amplifier is not less than a preset temperature threshold, adjusting the output power of the power amplifier according to a preset power attenuation step length. The invention has the technical effect that the use experience of a user is improved.

The invention discloses a main power controller assembly, comprising a box body and a box cover, wherein a control circuit board is installed on the internal bottom plate of the box body and connected with an external wiring harness via an elbow insert; an insert mounting hole is formed in the side wall of the box body, the outlet end of an insert box penetrates through the insert mounting hole and is arranged horizontally towards the exterior of the box body, the inlet end of the insert box faces the lower part of the interior of the box body and is correspondingly connected with the control circuit board, and a building block type high-power fuse assembly, a power switch and the like can also be installed in the box body. The main power controller assembly is reasonable in structural design, compact and small in size, and can greatly reduce the occupied space over the existing main power control equipment; the components are installed regularly to facilitate installation and overhauling and effectively avoid potential safety hazard caused by disordered device installation and line arrangement.

The invention discloses a mobile phone wireless charger with an overcharge protection device, which belongs to the field of mobile phone chargers. A mobile phone wireless charger with an overcharge protection device includes a wireless charger body, and a wireless charger body is installed on the bottom of the wireless charger body. Coil, the inner wall of the wireless charger body is fixedly connected with a support plate, and the coil is located inside the support plate, and the inner wall of the support plate above the coil is fixedly connected with a mounting plate, which sends signals to the wireless charger through the mobile phone battery overcharge protection board , so that the gear rotates 90°, and then the through hole rotates to block the magnetic induction line, so that the mobile phone will not generate current, thereby protecting the battery of the mobile phone. At the same time, if the mobile phone is seriously heated during charging, the heat will make the memory metal The sheet changes from a curved phase state to a vertical phase state, so that the control board is pushed into the through hole to reduce the magnetic flux, which can reduce the current in the mobile phone, slow down the charging speed, and protect the overcharge at the same time. Realized overheating protection.

The invention discloses a hydrous ethanol hydrogen-mixed fuel power system. According to the hydrous ethanol hydrogen-mixed fuel power system, heating is carried out by virtue of heat of an exhaust tube of an engine to crack hydrous ethanol into hydrogen and then the hydrogen is guided in a system in which an engine combusts to do work; the exhaust tube of the engine is connected with a hydrogen-rich gas generator and then is connected with a silencer of the generator; a hydrous ethanol storage box is internally filled with a hydrous ethanol solution; the hydrous ethanol storage box is connected with a hydrous ethanol pump; the hydrous ethanol solution is conveyed into the hydrogen-rich gas generator; the hydrogen-rich gas generator cracks the ethanol into the hydrogen; the hydrogen enters a cooling and gas-liquid separation device through an outlet of the hydrogen-rich gas generator; a liquid obtained through separation enters the hydrous ethanol storage box through a pipeline provided with an electromagnetic valve to be cyclically utilized; the hydrogen obtained through separation enters a gas storage tank through a compressor; an output wire of the engine is connected with a controller and then is connected with an electronic control board of the engine; the hydrous ethanol storage box is connected with the hydrous ethanol pump and conveys a hydrous ethanol aqueous solution to a mixer; the hydrous ethanol aqueous solution is mixed with the hydrogen provided by the gas storage tank and supplied for the engine to combust to propel a cylinder to work.

The invention discloses a falling-film high-temperature heat pump system. The falling-film high-temperature heat pump system comprises a double-stage compressor and an oil separator, wherein a low-pressure cylinder inlet, a high-pressure cylinder inlet and a high-pressure output port are arranged in the double-stage compressor; and the oil separator is arranged between a condenser and the double-stage compressor, an input port of the oil separator is communicated with the high-pressure output port, and an exhaust port of the oil separator is communicated with an inlet of the condenser. The falling-film high-temperature heat pump system is characterized by further comprising an auxiliary heat exchanger; the auxiliary heat exchanger is arranged between the condenser and an evaporator; a first inlet of the auxiliary heat exchanger is communicated with an outlet of the condenser; a first outlet of the auxiliary heat exchanger is communicated with an inlet of the evaporator and a second inlet of the auxiliary heat exchanger respectively through respective corresponding electronic expansion valves; and a second outlet of the auxiliary heat exchanger is communicated with the high-pressure cylinder inlet of the double-stage compressor. The falling-film high-temperature heat pump provided by the invention is good in heating effect, low in equipment investment cost, high in heat energy utilization rate, and convenient to use for heating in northern areas with low environment temperatures.

The invention provides a radio-frequency LDMOS transistor with an overheat protection function. The radio-frequency LDMOS transistor comprises an SONOS device, an NPN BJT heat sensor and a radio-frequency LDMOS device integrated on a same chip, wherein positive charges are stored at a gate of the SONOS device; the gate of the SONOS device is connected to a base of the NPN BJT heat sensor through a metal and provides an emitter junction of the NPN BJT heat sensor with bias; and a collector of the NPN BJT heat sensor is connected to the gate of the LDMOS device and provides the gate of the LDMOS device with a current discharge channel. An overheat protection circuit of the radio-frequency LDMOS device is integrated on the radio-frequency LDMOS chip and an independent power supply pin is not needed, so that the complexity of a radio-frequency system is greatly reduced and the manufacturing cost and the maintenance cost of the radio-frequency system employing the radio-frequency LDMOS device as a core are reduced.

The embodiment of the invention provides a brake resistor overheating protection method and device, a readable storage medium and a controller, and the method comprises the steps: carrying out the integration of the difference between the real-time heat production of a brake resistor and a preset instant heat dissipation amount after the brake resistor is put into operation, and obtaining an accumulated heat value; calculating and obtaiing a temperature rise value, and adding the temperature rise value and the initial temperature value when the brake resistor is put into operation to obtain the actual temperature after the brake resistor is put into operation; and judging whether the actual temperature after the brake resistor is put into operation is greater than a preset temperature threshold, and if so, controlling the brake resistor to quit operation. According to the invention, the difference value between the real-time heat generation amount of the brake resistor and the preset instantaneous heat dissipation amount is integrated, the accumulated heat value is obtained, then the temperature rise value of the brake resistor is determined according to the intrinsic parameters ofthe brake resistor, the actual temperature of the brake resistor after being put into work is obtained, and overheating protection is conducted on the brake resistor on the premise that a temperaturesensor of the brake resistor is not adopted.

The invention provides a phase change heat storage solar water heater with an anti-overheating structure. The phase change heat storage solar water heater comprises a water inflow pipe, a water outflow pipe, a phase change heat storage solar water heater body and a radiator. Heat insulation cladding and multiple parallel vacuum tubes are arranged in the phase change heat storage solar water heater body. Phase change heat storage materials are located in the vacuum tubes. The radiator comprises heat conduction rods and cooling fins. The phase change heat storage solar water heater is characterized in that the parallel vacuum tubes are covered with thermotropic scattering layers; and when the temperature of the phase change heat storage materials is higher than the light-transmitting change threshold temperature of the thermotropic scattering layers, light transmitting of the thermotropic scattering layers is changed into scattering, sunlight radiation is prevented from reaching the vacuum tubes, the sunlight radiation is scattered to the surfaces of the heat conduction rods, the sunlight radiation is absorbed by the heat conduction rods and converted into heat, and the heat is transferred to the cooling fins of the radiator for heat dissipation, so that temperature rise of the phase change heat storage materials is avoided, and overheating protection for the phase change heat storage solar water heater is achieved.

The invention provides a phase-change thermal storage solar water heater with a direct radiating structure.The phase-change thermal storage solar water heater comprises a phase-change thermal storage solar water heater body, a radiating body and phase-change heat exchange tubes, wherein a heat insulation cladding and a plurality of parallel vacuum tubes are arranged in the phase-change thermal storage solar water heater body, a phase-change thermal storage material is arranged in the vacuum tubes, each phase-change heat exchange tube is installed on top of the corresponding vacuum tube, the open end of each phase-change heat exchange tube is embedded into the corresponding vacuum tube, the side wall of each phase-change heat exchange tube is in sealed connection with the wall of the corresponding vacuum tube, and the closed end of each phase-change heat exchange tube is embedded in a heat conduction flat panel of the radiating body; hot gas generated through overheating of the phase-change thermal storage material enters the phase-change heat exchange tubes through the open end of each phase-change heat exchange tube and condenses at the closed end of each phase-change heat exchange tube, heat generated through condensation is transmitted to the radiating body to be dissipated through the closed end of each phase-change heat exchange tube, and liquid generated after condensation flows back to the vacuum tubes along the inner wall of each phase-change heat exchange tube.Through condensation of gas generated after overheating of the interior of the vacuum tube, stable pressure in the vacuum tubes is maintained, and then overheating protection of the phase-change thermal storage solar water heater is achieved.

The embodiment of the invention provides a motor torque control method and device, a controller and a motor. The method comprises the steps: acquiring the temperature value of a motor; judging whetherthe obtained temperature value of the motor is higher than a preset temperature threshold value or not; and if so, reducing the input current of the motor according to a nonlinear function formed between the temperature value of the motor and the input current of the motor, so as to reduce the input current of the motor and thus reduce the torque of the motor. The method can achieve the overheating protection of the motor, and the efficiency of the motor is improved.

The invention provides an overheat protecting device and an overheat protecting method of a motorized spindle and a cutter. The overheat protecting device comprises a temperature monitoring module, a coolant flow monitoring module and a control module, wherein the temperature monitoring module is used for monitoring the temperature of the motorized spindle and outputting a first signal; the coolant flow monitoring module is used for monitoring the flow of a coolant and outputting a second signal; the coolant is used for cooling the motorized spindle; and the control module is used for controlling the motorized spindle to stop operating or operating according to the preset mode when the first signal shows that the temperature of the motorized spindle is higher than a preset first threshold and / or the second signal shows that the flow of the coolant is lower than a preset second threshold. By using the technical scheme, the overheat protection for the motorized spindle is better realized, the work state of the motorized spindle is stabilized, the influence caused by overheat on work precision of a host machine is avoided, the work quality is improved and the motorized spindle is protected.

The invention relates to the field of auxiliary supplies for cervical vertebra rehabilitation and prevention and discloses a pillow towel having a health-care function. The pillow towel comprises a pillow towel body and connecting bodies located on two sides of the pillow towel body, wherein the connecting bodies on two sides are mutually and movably connected, a heating piece is arranged in the pillow towel body, and a material for the pillow towel body includes bamboo charcoal powder, tourmaline powder and germanium powder according to the weight part ratio of 10-30 to 7-9 to 2. The heating piece adopts a carbon fiber woven net structure. The pillow towel integrates the heating piece and the tourmaline powder and the germanium powder, the infrared ray transmitting rate, the negative air ion releasing amount and an ion permeation effect are improved through the joint effect of temperature rise and human body extrusion, the blood circulation and metabolism of the human body are further promoted, and the pillow towel has an excellent thermal-therapy health-care effect.

The invention discloses a protection circuit, method and device for a compressor. The protection circuit comprises a voltage division circuit, a signal processing circuit and a power device, wherein a temperature control switch is arranged in the voltage division circuit which is used for outputting voltage signals according to actions of the temperature control switch, and the temperature control switch acts on the basis of the temperature of a cylinder of the compressor; the signal processing circuit is connected with the voltage division circuit and used for outputting control signals on the basis of comparison results of reference voltage signals, namely the voltage signals output by the voltage division circuit, and comparison voltage signals; and the power device is connected with the signal processing circuit and used for controlling work states of the compressor on the basis of the control signals. By means of the protection circuit, method and device for the compressor, the technical problem of low reliability of an existing compressor overheat protection scheme is solved.

The invention relates to a portable power source recycling device. The device comprises a recycling capsule (1). A recognition module, a controller and a moving component which are sequentially connected are arranged in the recycling capsule (1). The recognition module comprises a camera (2) and a weighing sensor (3) which are connected with the controller respectively. The moving component comprises a rotating plate (4) and a driving mechanism, wherein the rotating plate (4) is used for bearing products to be recycled, and the driving mechanism is connected with the rotating plate (4). The camera (2) faces towards the rotating plate (4). The weighing sensor (3) is located at the bottom of the rotating plate (4). At least two classification rooms are arranged below the rotating plate (4), the driving mechanism is connected with the controller, the driving mechanism moves to enable the rotating plate (4) to be inclined, and the products to be recycled on the rotating plate (4) slide down to the corresponding classification rooms. Compared with the prior art, the varieties of the products to be recycled are judged through detection in two aspects of the weight and the appearance, a more accurate judging result can be obtained, and classified recycling can be accurately carried out.

The invention discloses a motor temperature measurement and overtemperature protection method of a drum washing machine. The motor temperature measurement and overtemperature protection method comprises the following steps of: after receiving speed output, a motor drive controller first outputs a direct-current voltage and stabilizes the direct-current voltage for a certain time; a stator current is acquired by adopting a current sampling circuit; a stator resistance R is calculated by the Ohm's law; and a stator temperature T is calculated with a formula and judging whether overtemperature happens. The motor temperature measurement and overtemperature protection method disclosed by the invention has the advantages of no need of extra equipment, low cost, simple structure, short whole measurement and judgment, high temperature and capability of effectively protecting a motor.

The embodiment of the present invention provides a braking resistor overheat protection method, device, readable storage medium and controller, the method includes: after the braking resistor is put into operation, the real-time heat production of the braking resistor and the preset instantaneous heat dissipation The difference is integrated to obtain the accumulated heat value; then the temperature rise value is calculated, and the temperature rise value is added to the initial temperature value when the braking resistor is put into operation to obtain the actual temperature after the braking resistor is put into operation; Whether the actual temperature after work is greater than the preset temperature threshold, if so, control the braking resistor to quit working. The present invention integrates the difference between the real-time heat production of the braking resistor and the preset instantaneous heat dissipation to obtain the accumulated heat value, and then determines the temperature rise value of the braking resistor according to the inherent parameters of the braking resistor, and then obtains the braking The actual temperature after the resistor is put into work realizes the overheating protection of the braking resistor without using the temperature sensor of the braking resistor.

The invention discloses a current-limiting type circuit breaker with an anti-seismic property. The circuit breaker comprises a shell base and an upper cover. The shell base is provided with a thermaltripping mechanism composed of a tripping mechanism and a bimetallic strip. The current-limiting circuit breaker also comprises a thermal tripping pull rod. A sliding rail is arranged on the upper cover; the thermal tripping pull rod is connected with the sliding rail in a sliding manner; the upper cover is buckled with the shell base; the thermal tripping pull rod is arranged between the trippingmechanism and the bimetallic strip; and one end of the thermal tripping pull rod is connected with the bimetallic strip, the other end of the thermal tripping pull rod is close to the tripping mechanism at a set distance, the thermal tripping pull rod and the tripping mechanism of the circuit breaker cannot be contacted in a normal state, and when the bimetallic strip is heated and deformed, theother end of the thermal tripping pull rod triggers the tripping mechanism to realize power failure and tripping. The current-limiting type circuit breaker with the anti-seismic property is simple instructure and high in anti-seismic capability, and a phenomenon of false tripping caused by a fact that vibration of a tripping pull rod is conducted to the tripping mechanism of the circuit breaker can be reduced.