374results about How to "Achieve temperature control" patented technology

The invention discloses a preparation method of a semisolid slurry of a rare earth magnesium alloy. According to the guiding principle of promoting grain nucleation and inhibiting grain growth, pure aluminium is added into rare earth magnesium alloy melt, and a lot of fine dispersed Al2RE intermetallic compound particles which are generated by an in-situ reaction provide nuclei of heterogeneous nucleation for primary alpha-Mg so as to promote grain nucleation; and after the melt is transferred to a tundish, considering stability of a solid-liquid interface during the solidification process, the growth of a primary phase is delayed by reasonable control of cooling conditions in different stages of solidification so as to realize the effect of inhibiting grain growth. The invention provides a low-cost agitation-free green semisolid slurry preparation method. In comparison with a traditional semisolid slurry preparation technology, efficiency of the preparation method is improved greatly and cost is reduced remarkably. By the preparation method, a high-quality rheological slurry is provided for follow-up rheoforming of rare earth magnesium alloy, such as rheo-die casting, rheological squeeze casting and the like. The preparation method has a wide application prospect in rheoforming of a magnesium alloy.

The invention discloses a one-driven-one air conditioner control system and method. An air conditioner comprises an indoor unit and an outdoor unit, multiple air hoses are connected to an air outlet of the indoor unit, and the tail ends of the air hoses stretch into corresponding rooms; the control system comprises partition controllers, a temperature detection module, an air valve module and a partition control module; the partition controllers are used for sending an operating instruction of a user to the partition control module; the temperature detection module collects the environment temperature of the rooms, and sends the temperature to the partition control module; the air valve module comprises multiple air valves, and each air hose stretching into the corresponding room is provided with one corresponding air valve; the partition control module is used for generating control signals according to the received operating instruction of the user and the environment temperature collected by each temperature sensor, controlling the state of each air valve, and sending the control signals to an air conditioner main control panel; the air conditioner main control panel controls the frequency of a compressor and the rotation speed of an indoor draught fan. By means of the one-driven-one air conditioner control system and method, temperature control over multiple rooms is achieved, and the temperature adjustment for multiple rooms is achieved; the air conditioner is convenient to install, low in cost and convenient to maintain.

The invention relates to a split type one-to-two Stirling refrigerating variable temperature zone refrigerator. Two variable temperature chambers are arranged in a refrigerator body of the refrigerator. The top of the refrigerator body of the refrigerator is provided with a refrigerator body top space. A refrigerating system is arranged in the refrigerator body top space. A linear compressor of the refrigerating system is connected with two pneumatic expansion machines through a gas supply pipe. The two pneumatic expansion machines are connected with pulsating heat pipes in the two variable temperature chambers correspondingly. An adjusting valve is arranged on the gas supply pipe. The refrigerator adopts the process that the linear compressor drives the two pneumatic expansion machines, the adjusting valve is mounted on an inlet pipeline of one pneumatic expansion machine, and thus the refrigerating temperature and refrigerating capacity of the two pneumatic expansion machines can be effectively adjusted. According to the split type one-to-two Stirling refrigerating variable temperature zone refrigerator, the adjusting valve of the pneumatic expansion machines and the input voltage of the linear compressor can be adjusted through a controller, the refrigerating temperatures of the two different variable temperature chambers in the refrigerator are controlled independently, and thus the temperature in the refrigerator body of the refrigerator can be controlled at -40-7 DEG C in a high-precision mode.

The application of the invention discloses a control method, device and system for engine temperature. The method comprises the following steps: obtaining current working condition parameters and current water temperature of an engine; determining a first target water temperature and a second target water temperature which are corresponding to the current working condition parameters, judging whether the current water temperature is lower than the first target water temperature or not; if the current water temperature is lower than the first target water temperature, controlling the opening output duty ratio of a thermostat, making the opening of the thermostat and a first difference value between the first target water temperature and the current water temperature corresponding to enable the current water temperature of the engine to be close to the second target water temperature; if the current water temperature is higher than or equal to the first target water temperature, controlling the opening output duty ratio of the thermostat, making the thermostat in a full open position, and controlling a combined gear of a water pump and a fan to be located in a target gear based on the size relation of the current water temperature and the second target water temperature, to enable the current water temperature of the engine to be close to the second target water temperature.

The invention discloses a network refrigerator and a system of the network refrigerator, which can realize remote understanding for goods storage situation in the refrigerator at different places and have a warning function. The network refrigerator comprises a refrigerator body. A scanning / sensing unit, a processing unit, a wireless communication unit and a storage unit are arranged on the refrigerator body. The refrigerator system is connected with a cloud memory pool and a mobile terminal through gateway equipment. The scanning / sensing unit in the refrigerator body scans / senses identification codes of stored goods and sends the read identification code information to the processing unit; the processing unit adopts a wireless communication module to be connected with the cloud memory pool through the gateway equipment so as to extract comprehensive data information of the goods corresponding to the identification codes and send the extracted data information to an authorized mobile terminal through the wireless communication unit, so that a user can understand the comprehensive information of scanned / sensed goods through received data information.

A clothes dryer and a control method thereof are provided. The clothes dryer includes an air circulation system (A) and a refrigerant circulation system (R), the refrigerant circulation system (R) includes a compressor (1), a condenser (2), a throttling element (3) and an evaporator (4); the air circulation system (A) includes a filter device (200), an air circulation power fan (5) and a roller (6), and the refrigerant circulation system (R) does not include a subcooler; the clothes dryer further includes a controller (22), a temperature sensor or a temperature-sensing element (101, 104), and a temperature and humidity sensing element (102, 103); the controller (22) is configured to control an operation of the refrigerant circulation system (R), the operation of the clothes dryer includes a temperature rise phase and a basic drying phase, and the compressor (1) of the clothes dryer is configured to have a higher power consumption in the temperature rise phase than in the basic drying phase, to rapidly rise a temperature in the clothes dryer.

The invention discloses a chip cooling device which comprises a cooling room positioned at the bottom of the device and matched with the chip, a cooling liquid pond stored with cooling liquid, a firstmicro channel, a first micro pump, a second micro channel, a micro nozzle, a third micro channel, a second micro pump, a fourth micro channel, a condenser and a micropore, wherein one end of the first micro pump is communicated with the cooling liquid pond by the first micro channel and the other end is communicated with the micro nozzle by the second micro channel; the micro nozzle is arranged above the cooling room and communicated with the cooling room; one end of the second micro pump is communicated with the cooling room by the third micro channel and the other end is communicated with the condenser by the fourth micro channel; the condenser is positioned above the cooling liquid pond and a condensing channel is arranged in the interior of the condenser; and a radiating fin is arranged on the top of the condensing channel which is communicated with the cooling liquid pond by the micropore. The chip cooling device has small volume, high heat dissipation efficiency, very high controllability and working flexibility and can meet the cooling requirements of the chip in different working conditions.

The invention discloses a low-temperature preheating system for a battery pack of an electric car and a method for preheating the battery pack, relates to the technical field of low-temperature operation of the electric car, and aims at preheating batteries of the electric car under a low-temperature condition. The heating device disclosed by the invention is used for heating the battery pack; a temperature collecting device is used for collecting temperature in the battery pack; a power supply signal output end of an electric generator is connected with a power supply signal input end of the heating device; an engine is used for driving the electric generator to generate electricity; a control signal output end of an electric generator controller is connected with a power generation control signal input end of the electric generator; a control signal output end of an engine controller is connected with a control signal input end of the engine; a heating control signal output end of a heating system controller is simultaneously connected with the control signal input end of the engine controller and the control signal input end of the electric generator controller; and the heating system controller is used for judging the temperature, which is collected by the temperature collecting device, in a box body of the battery pack, and achieving control on the heating device. The low-temperature preheating system is suitable for preheating the batteries of the electric car.

The invention provides a pump-driven two-phase circuit device for heat dissipation of a high heat flux electronic device. Heat is collected and transported by using an endothermic process in evaporation and an exothermic process in condensation during a circulation flow process of a working medium. An evaporator for the circuit device comprises micro-channels and fins. In an area of high heat flux, the micro-channels are used to dissipate heat and increase a heat transfer coefficient of a partial area, while in an area of low heat flux, the fins are used. Due to great area difference between the micro-channel area and the fin area in the evaporator, when the working medium in the micro-channels enters the fin area, volume quickly expands and temperature of the working medium reduces, so as to help heat dissipation of the device in the fin area. By using different structures and with little resources, heat dissipation problems of devices with different powers are solved. The pump-driven two-phase circuit device for heat dissipation of the high heat flux electronic device can adapt to heat dissipation of electronic devices with different heat flux densities and can satisfy working requirements of electronic devices with a heat flux density of 50 W / cm<2> or above.

The invention relates to a method for intelligent temperature-control cultivation of multiple plants in a greenhouse and belongs to the technical field of temperature-control planting of various plants in greenhouses. First, a complete greenhouse plant data database is established according to plants of all varieties needing to be cultivated in each area of the greenhouse; a plant image information identification graph library is established; plant image information collection is performed, collected images are transmitted to a main console, and after the main console performs mode identification processing on collected image information, a corresponding instruction is sent to a temperature control unit according to mode identification processing results; and finally, the temperature control unit executes the received instruction. The reasonable, efficient and convenient solution is provided for suitable-temperature cultivation of various plants in the greenhouse, not only are spatial resources in the greenhouse saved, but also the survival rate of various plants is effectively improved, and the benefit of multi-variety cultivation of greenhouse plants is greatly improved.

The invention discloses an encapsulating structure of a distributed feedback (DFB) fiber laser. The encapsulating structure comprises a rectangular base, an outer encapsulating layer, a sound insulating board, an inner encapsulating layer and strip-shaped piezoelectric ceramic, wherein the outer encapsulating layer is an inwardly-concave rectangle and is buckled on the base so as to form an accommodating space between the base and the outer encapsulating layer; two opposite side walls of the outer encapsulating layer are concentrically provided with two first circular holes; the sound insulating board is attached to an inner wall between the base and the outer encapsulating layer and provided with two second circular holes corresponding to the two circular holes on the outer encapsulating layer; the inner encapsulating layer is a hollow rectangular shell fixed on the sound insulating board on the base and provided with two third circular holes corresponding to the two circular holes on the sound insulating board; the strip-shaped piezoelectric ceramic is fixed on the bottom surface of the inner encapsulating layer on the sound insulating board on the base; the DFB fiber laser is fixed on the upper two sides of the strip-shaped piezoelectric ceramic by bonding; and the two ends of the DFB fiber laser pass through the first, second and third circular holes.

The invention relates to a multi-tube combine reactor, which comprises heating furnace, heater, thermal conductive rod, at least two reaction tubes, multi-tube switch valve, temperature tester, temperature controller, and flux distributor; the thermal conductive rod is at the hollow area of heater; the heater is inside the heating furnace and outside the hollow area; the thermal conductive rod has at least two reaction tube lead tubes to arrange the reaction tubes; the material inlet of each reaction tube is connected to the flux distributor, while the outlet is connected to the multi-channel switch valve, to parallel connect the reaction tubes; the temperature testing element is connected to the temperature tester; the heater is connected to the temperature controller.

The invention discloses an intelligent electric heat tracing control system based on an IOT (Internet of Things) cloud platform. The control system comprises an equipment domain, a network domain and an application domain, wherein the equipment domain is interacted with the network domain, and the network domain is interacted with the application domain. On the basis of conventional electric heat tracing controllers and an IOT architecture, all electric heat tracing controllers form an Internet of things through Internet, so as to realize basic services such as equipment monitoring, intelligent data analysis, message distribution and remote upgrade. When equipment has a failure, an intelligent alarm such as a short message and the like can be realized through the Internet, a mobile terminal can check an equipment operating status in real time through web, so that real-time and natural interaction between human and equipment can be realized, and a more intelligent and convenient control system is exhibited.

A technology for manufacturing high-precision ultra-long Cu-alloy tube includes such steps as horizontal conticasting to obtain raw Cu-alloy tub, mechanically removing impurities from its surface, differential-temp spinning rolling including small-deformation rolling to raise its temp to 380-500 deg.C and great-deformation rolling to raise its temp to 720-880 deg.C, and fast cooling in non-oxygen environment.

The invention relates to a temperature control circuit for a hot knife mechanism, comprising a common-mode choke coil, a DC / DC power module, a MOS tube, an MCU, a voltage and current sampling circuit, an open-collector NAND gate, and an electric heating element. The input end of the common-mode choke coil is used for connecting a bus of an external power supply, and the output end is connected with the input end of the DC / DC power module. The positive output end of the DC / DC power module is connected with the drain of the MOS tube. The gate of the MOS tube is connected with the MCU. The electric heating element is connected between the source of the MOS tube and the negative output end of the DC / DC power module. The negative output end of the DC / DC power module is connected with the MCU through the voltage and current sampling circuit. The MCU is connected with a principal computer through the open-collector NAND gate. The temperature of the electric heating element is controlled through a closed-loop control algorithm according to the linear proportion relationship between resistance and temperature. According to the invention, a hot wire blade works in a constant-power mode, the resistance of the hot wire blade is controlled by adjusting the voltage and current of the hot wire blade, and therefore, the temperature of the hot wide blade is controlled.

The invention discloses an air-conditioning control system of an electromobile. The control system comprises an air-conditioning compressor, a blower assembly, a transmission controller and a storage battery, and is characterized in that a heating circuit comprises a heating switch, a direct current contactor and a heating element, wherein the heating switch is controlled by a cold-hot air rotary switch; the heating switch, the coil of the direct current contactor and a fan switch are connected in series and then are connected between a power supply and an earth wire; and the heating element and a normally open point of the direct current contactor are connected in series and then are connected to two ends of the storage battery. According to the invention, the match and combination of a special compression system of the electromobile and an original air-conditioning system of a common automobile are completed, and the control on an air-conditioning refrigeration system is finished effectively; simultaneously a PTC (positive temperature coefficient) heating body is adopted, and the perfect refrigeration and heating functions are realized; the control system is used for a pure electromobile which is obtained by modifying the common automobile, the design of a circuit is simplified greatly, the control system is convenient to install and use, and the modification efficiency of the electromobile can be improved greatly; and the control system has the characteristics of simple structure, low cost, safety and reliability, and is convenient to use and install.

The invention discloses a high and cold area outdoor intelligent rain and snow prevention temperature control distribution cabinet which comprises a distribution cabinet body. Two sides of the top of the distribution cabinet body are hinged to baffle plates. The top of the distribution cabinet body is provided with an electric hydraulic push rod which is equipped with baffle plate push rods. The other end of each of the baffle plate push rods is hinged to a baffle plate. The baffle plates are provided with water guiding grooves, snow and rain sensors and small electromagnetic vibrators. A temperature sensor is arranged in the distribution cabinet body. The side plate of the distribution cabinet body is provided with an exhaust fan. A heating device is arranged in the distribution cabinet body. The snow and rain sensors and the temperature sensor are electrically connected to a controller which is electrically connected to the electric hydraulic push rod, the small electromagnetic vibrators, the exhaust fan and the heating device. According to the invention, through the cooperation of the electric hydraulic push rod and cover plates, the removal of the snow and rain water at the top of the distribution cabinet is realized, the structure is simple, the effect is good, and the high and cold area outdoor intelligent rain and snow prevention temperature control distribution cabinet is very suitable for a high and cold area.

The invention provides an air conditioning system which comprises an outdoor unit, a hydraulic power module, at least one zone module, at least one distribution module group and at least one indoor unit group. Each distribution module group comprises at least one distribution module and is connected with the corresponding zone module, and each indoor unit group comprises at least one indoor unit and is connected with the corresponding distribution module, so that cooling media can flow into the indoor unit groups via the outdoor unit, the hydraulic power module, the zone modules and the distribution module groups and further flow back to the outdoor unit via the distribution module groups, the zone modules and the hydraulic power module after heat is exchanged among the cooling media and indoor air in the indoor units, heat exchange can be carried out in the outdoor unit, and the cooling media can be circulated. The air conditioning system has the advantage that the temperature can be regulated by the aid of the air conditioning system.

The invention discloses a method and a device for testing the heat exchange capability of a heat exchanger. The method comprises: building an analog internal circulation system and an analog external circulation system; operating the two systems connected with a heat exchanger; adopting differential pressure detection to obtain practical operation air quantity in the two systems; comparing with aset air quantity to regulate the two systems; and collecting the temperature data of the internal circulation inlet and outlet of the heat exchanger as well as the external circulation inlet and outlet of the heat exchanger at the same time to obtain the heat exchange capability of the heat exchanger under different air quantities. The device comprises a master control mechanism, the analog internal circulation system, the analog external circulation system, temperature acquisition mechanisms and a differential pressure acquisition mechanism, wherein the master control mechanism is connected with the temperature acquisition mechanisms and the differential pressure acquisition mechanism, and the temperature acquisition mechanisms are respectively arranged in the analog internal circulationsystem and the analog external circulation system. The test method of the invention is convenient and simple, is easy to operate, and has high test data accuracy; and the device of the invention has low cost, simple structure, favorable stability of detection result and high data detection accuracy.

The invention provides an underground semiconductor refrigerating device which comprises a base pipe, a lower connector, a heat-insulating box, a heat-conducting block, a semiconductor refrigerating sheet, a radiating block, a heat-insulating box cover and an upper connector, wherein the lower connector and the upper connector are respectively sleeved on the base pipe from the lower end and upper end of the base pipe; extending parts of the lower connector and the upper connector are lap-jointed; the heat-insulating box is sleeved between the base pipe and the lower connector or the upper connector; a heat-conducting through hole matched with the heat-conducting block is arranged on an outer wall of the heat-insulating box; the heat-conducting block, the semiconductor refrigerating sheet and the radiating block are embedded into the heat-conducting through hole in turn from outer to inner; and the semiconductor refrigerating sheet is used for forming a refrigerating surface on an inner surface and a radiating surface on an outer surface under a working state. According to the underground semiconductor refrigerating device, a temperature difference of the inner and outer surfaces is formed on the semiconductor refrigerating sheet and a heat conducting flow from inner to outer is formed at the heat-conducting through hole by the heat-insulating box, so that the real-time control on the required temperature in the heat-insulating box is realized.

The invention relates to a modified ultrasonic atomization warming method. The method is as follows: two or three parts of 'wind flow' warming, 'fog flow' warming and 'liquid to be atomized' warming are combined; individual warming temperatures are set at different heating positions according to the need; and the control on an ultrasonic atomization fog discharge temperature can be achieved through allocating and controlling the heat supply of heating units at all warming positions. By utilizing the modified warming method, the defect that the traditional ultrasonic atomization device only generates clod fog is overcome, and the design defect of the existing warming method is overcome. The novel warming ultrasonic atomization device can generate stable and thermostatic hot fog and can prevent components in an atomized liquid from being damaged by high temperature. The novel warming ultrasonic atomization device manufactured by the modified warming method mainly consists of an ultrasonic atomization part and a warming part, can generate good treatment and cosmetic effects, is simply manufactured and can be manufactured into a pocket-size portable device. The invention relates to the modified ultrasonic atomization warming method and the novel warming ultrasonic atomization device which can be used for medical health care and cosmetology.

The invention discloses a radiation cooling system for temperature control of electronic equipment close to space vehicle, comprising an electronic equipment pressure maintaining cabin, a liquid storage tank, a pump, an in-cabin finned-pipe heat exchanger, a fan for an in-cabin radiator, a radiation cooling surface, a pipeline, a diverter valve and circulating fluid working medium, the inlet of the pump is connected with the outlet of the liquid storage tank, the inlet of the liquid storage tank is connected with the outlet of the in-cabin finned-pipe heat exchanger, the inlet of the extravehicular radiation surface is connected with one outlet of the diverter valve, and the circulating fluid working medium is filled in the pipeline; in the invention, a fluid loop coupling type radiation cooler is arranged according to the space environment of the stratosphere and the thermal loading condition of the fluid loop, waste heat in the electronic equipment is transmitted to the extravehicular radiation cooling surface through the fluid loop and is discharged to the ambient atmosphere under the radiation cooling function; the radiation cooling system is used in special working environment at bottom part of a stratosphere to carry out heat radiation of high-power electronic equipment, and the structure is compact.

The invention relates to temperature control magnetic bone cement and a preparation method thereof. The preparation method comprises the following steps: weighing FeCl3 6H2O, ZnCl2 and MnCl2 4H2O, mixing the materials according to the stoichiometric ratio of Mn0.15Zn0.85Fe2O4, adding ultra-pure water for preparing a solution, reacting, then getting a precursor of a manganese-zinc ferrite, calcining the precursor of the manganese-zinc ferrite to get manganese-zinc ferrite powder, adding a spherical poly(methyl methacrylate) particle powder agent containing benzoyl peroxide into the manganese-zinc ferrite powder, uniformly mixing, further adding methyl methacrylate containing dimethyl mercaptopropionic acid, and blending to prepare a product. The Curie temperature of the bone cement prepared by the preparation method disclosed by the invention is about 50 DEG C, the magnetic bone cement containing the manganese-zinc ferrite in the different proportions can raise the temperature from 37 DEG C to 50 DEG C and be constant at the temperature under an external alternating magnetic field, and the temperature control performance is realized.

The invention discloses a temperature control-type high suction unsaturated soil consolidation apparatus, and belongs to the soil test technology in the field of geotechnical engineering. A specimen to be measured (00) is included, and the apparatus is provided with a suction control device (10), a temperature control device (20), a pressure chamber (30) and a loading device (40). The specimen (00) is arranged in the pressure chamber (30); the pressure chamber (30) is placed in the temperature control device (20); the suction control device (10) is connected to the pressure chamber (30) through a pipe, and controls the suction of the pressure chamber (30); and the loading device (40) is connected to the pressure chamber (30), and provides pressure to the specimen (00). The invention adopts a relative humidity control technology to realize suction control in a high suction range; the high pressure loading device is used for the realization of the high pressure loading; and the temperature control device is employed to realize the temperature control. The apparatus has the advantages of simple principle of suction control, easiness to operate, convenience for installation and measurement and strong practicability, and is applicable to unsaturated soil test under the conditions of high pressure and controlled temperature and controlled humidity.

The invention provides a cooking apparatus, a cooking device, and a control method of the cooking device. The cooking apparatus is characterized by comprising a temperature detection module and a wireless communication module, wherein the temperature detection module is used for detecting a temperature parameter in the cooking apparatus; and the wireless communication module is used for building communication connection with a terminal so as to send the temperature parameter to the terminal. By using the technical scheme, the operation intelligence and convenience of the cooking device can beeffectively improved; and the timeliness and the accuracy of the temperature sensing control can be effectively improved.

The invention discloses an ocean compressed air energy storing system. According to the technical scheme, an ocean sinking box structure is adopted to realize high pressure air storage and is utilized as an energy-storing unit and is connected with a seaborne compressed air generating system through a high pressure gas pipeline, a gas storing sinking box is connected with the high pressure gas pipeline by adopting a flexible structure to overcome the displacement difference caused by sea level fluctuation, so that the depth of the sinking box structure in the ocean is not changed. The ocean compressed air energy storing system provided by the invention has the advantages that the seabed high pressure environment is utilized, the stable pressure is provided for the storage of the high pressure gas, a condition that the inner and outer pressures in a high pressure air storing container are equal is realized, the pressure applied to the wall of the high pressure air storing container is avoided, the requirement for the material intensity is reduced, the economy is improved, and the compressed air energy storing system is energy-saving, safe, clean and economical.

The invention discloses an infrared laser, which comprises a case, a pump module arranged in the case, semiconductor refrigeration sheets arranged in the case and a heat dissipation device arranged outside the case, wherein a first side of each semiconductor refrigeration sheet is arranged close to the pump module, and a second side of each semiconductor refrigeration sheet is arranged close to the wall of the case; and the heat dissipation device is arranged opposite to the second side of each semiconductor refrigeration sheet. The semiconductor refrigeration sheets perform temperature control on the pump module, the semiconductor refrigeration sheets are small in occupied space, simple in structure and low in noise, and the miniaturization requirement of the laser can be ensured. In addition, the semiconductor refrigeration sheets are good in refrigeration effect, and can realize heat dissipation and temperature control for the pump module through adjusting the voltage and directionof the two ends of the semiconductor refrigeration sheets.

The invention discloses a test bench, a control method thereof, a test device and a storage medium. The test bench comprises a base, a cover body and a temperature control assembly, wherein the base is provided with a test assembly and an elastic needle, and the cover body is connected with the base and can rotate relative to the base to form a covering state or a separating state; a pressing block is arranged on the side, facing the base, of the cover body and used for pressing a to-be-tested piece placed on the base when the base and the cover body are in the covering state so that the to-be-tested piece can make contact with the test assembly; the temperature control assembly is arranged between the cover body and the pressing block and used for detecting and controlling the temperature of the to-be-detected piece through conducting heat by the pressing block,and is in contact with the elastic needle so as to be connected with an external circuit board through the elastic needle when the base and the cover body are in the covering state. Through the above mode, the temperature of a chip can be adjusted and collected when the chip is tested, so that the temperature condition of the chip test is accurately controlled.

The invention relates to a temperature control circuit. The temperature control circuit is used for control of a temperature of a power device. The temperature control circuit comprises a temperature sampling circuit used for real-time sampling of an internal temperature of a power device and output of the sampled value, a first generation circuit used for generating a first protection parameter, a first comparison circuit used for generating a corresponding adjusting signal according to a magnitude relationship of a sampling value and the value of the first protection parameter, a first generation circuit used for changing and outputting the value of the first protection parameter when the adjusting signal changes, and a first execution circuit used for adjusting the work current of the power device according to the adjusting signal to achieve temperature control of the power device. The value of the first protection parameter is a first protection threshold or a second protection threshold. The temperature control circuit can ensure that the power device has a high load succession rate and meets usage requirements of users. The invention also relates to a temperature control method.