CN115201549A - High-temperature and high-voltage resistant IGBT chip high-voltage current detection device - Google Patents
High-temperature and high-voltage resistant IGBT chip high-voltage current detection device Download PDFInfo
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- CN115201549A CN115201549A CN202211116012.1A CN202211116012A CN115201549A CN 115201549 A CN115201549 A CN 115201549A CN 202211116012 A CN202211116012 A CN 202211116012A CN 115201549 A CN115201549 A CN 115201549A
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- 230000005540 biological transmission Effects 0.000 claims description 12
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- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 7
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- 238000004062 sedimentation Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 33
- 239000002826 coolant Substances 0.000 description 22
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
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- H—ELECTRICITY
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- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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Abstract
The invention discloses a high-voltage current detection device for an IGBT chip resistant to high temperature and high pressure, which comprises a detection box, a bearing device, a drainage device and a detection power supply, wherein the detection box is connected with the bearing device, the bearing device is connected with the drainage device, the drainage device is fixedly connected with the detection box, an outer frame of the detection power supply is fixedly connected with the detection box, the detection power supply is electrically connected with the bearing device, a working cavity is arranged on the detection box, a feed inlet and a discharge outlet are respectively arranged on two sides of the working cavity, the bearing device comprises a conveying belt, one end of the conveying belt sequentially penetrates through the feed inlet, the working cavity and the discharge outlet, the conveying belt is movably connected with the working cavity, a plurality of object stages are arranged on the outer surface of the conveying belt, a positioning cavity is arranged on the object stage, an upper side opening of the positioning cavity is arranged, a feeding manipulator is arranged at the inlet end of the conveying belt, gas drainage is carried out through the drainage device, and the over-high temperature in the working cavity is prevented from influencing the detection precision.
Description
Technical Field
The invention relates to the technical field of IGBT chip detection, in particular to a high-temperature and high-voltage resistant IGBT chip high-voltage current detection device.
Background
In recent years, with the continuous development of manufacturing industry, the requirement of manufacturing precision of industrial equipment is increasing more and more, wherein, IGBT (insulated gate bipolar transistor) is dominant in the field of high power current transformer.
The IGBT chip can produce a large amount of heats in the course of the work, need take away the heat rapidly through the radiator, prevent to guarantee that the chip operates steadily in safe junction temperature, consequently, the IGBT chip need carry out high-tension current detection in process of production to guarantee that the IGBT chip can satisfy the safe and stable operation demand when dispatching from the factory. However, when the IGBT chip is detected, a high voltage current needs to be applied. When the IGBT chip is damaged, loading high-voltage current can lead to instantaneous temperature rise to increase, influences detection device's safe operation.
In addition, most IGBT chip detection device is the open-type setting, and when the temperature rose, the hot motion aggravated, and the carrier concentration of air rose, and electric conductivity also can increase, when loading high current, can puncture the air gap even, causes the internal plant impaired, influences device life.
Disclosure of Invention
The invention aims to provide a high-voltage current detection device of an IGBT chip resistant to high temperature and high voltage, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a high-pressure IGBT chip high-tension current detection device of high temperature resistant high pressure, including the detection case, bear the device, drainage device and detection power supply, the detection case with bear the device and connect, it connects to bear device and drainage device, drainage device and detection case fastening connection, detection power supply frame and detection case fastening connection, detection power supply with bear the device electricity and connect, be equipped with the working chamber on the detection case, the working chamber both sides are equipped with feed inlet and discharge gate respectively, it includes the conveyer belt to bear the device, conveyer belt one end passes the feed inlet in proper order, working chamber and discharge gate, conveyer belt and working chamber swing joint, be equipped with a plurality of objective tables on the conveyer belt surface, be equipped with the location chamber on the objective table, location chamber upside opening sets up, the conveyer belt entrance point is equipped with material loading manipulator.
The detection case is main installation basis, install each other device, carry the IGBT chip through bearing the device, carry out gas drainage through drainage device, prevent that the working chamber internal temperature is too high, the influence detects the precision, supply power through detecting the power, detect the power and bear the device electricity and connect, automatic control circular telegram and switch on, carry out the chip transmission through the conveyer belt, carry out automatic feeding through material loading manipulator, place the IGBT in the location intracavity on the objective table, carry out automatic positioning, reduce artifical the participation, prevent to cause the injury to operating personnel when carrying out high-tension current detection time measuring.
Further, bear the device and include centering subassembly, detection power supply and centering subassembly electricity are connected, the working chamber upside is equipped with the guide way, centering subassembly is arranged in the guide way, centering subassembly includes subsiding the electric jar, subside electric jar frame and guide way fastening connection, it is equipped with the summit to subside the electric jar output, summit and location chamber import adaptation, the summit downside is equipped with the contact, drainage device includes heat transfer module and fan, be equipped with the plenum chamber on the detection case, the fan is arranged in the plenum chamber, plenum chamber one side is equipped with the bypass runner, fan exit end and bypass runner intercommunication, be equipped with the drainage way on the objective table, bypass runner export and the drainage way intercommunication of subsiding the electric jar lower extreme, drainage way and location chamber intercommunication, drainage way import one side is equipped with the heat transfer chamber, heat transfer module arranges in the heat transfer chamber, heat transfer module includes the inflation gasbag, magnet core and coil, the inflation gasbag is arranged in heat transfer chamber and is close to drainage way one side, drainage way and heat transfer chamber intercommunication, be equipped with a plurality of outside extension heat transfer board in the inflation gasbag, the one end of keeping away from the inflation is inserted in the drainage way, the inflation is kept away from the heat transfer board one end and is equipped with the roof, the roof is connected through roof and the heat transfer core transmission of collineation gasbag coil, collineatly line axis.
The upper end of the adjusting cavity is sealed through the centering assembly, external air is prevented from entering the positioning cavity, detection precision is prevented, a detection power supply is electrically connected with two contacts through a lead, the two contacts are installed through a capping, transmission is carried out through a conveyor belt, when an IGBT chip is moved to the lower end of the capping, a settlement electric cylinder outputs displacement to drive the capping to move downwards, until the two contacts and the IGBT chip are conducted, high-voltage current detection is carried out, a fan is installed through a pressurizing chamber, air pressurization is carried out through the fan, pressurized gas is conveyed into a drainage channel through a bypass flow channel, detection damage to the IGBT chip due to overhigh temperature during detection of the IGBT chip is prevented, the heat exchange assembly is installed through a heat exchange chamber, the heat exchange chamber carries out unilateral limit on an expansion air bag, compressed gas is filled in the expansion air bag, heat exchange detection is carried out on the gas flowing in the drainage channel through a heat exchange plate, high-temperature fluctuation influence on high-voltage current quality is prevented, when the temperature of the gas flowing in the drainage channel is overhigh, the expansion air bag is heated and expanded, the magnetic core is driven to move through a top plate, a coil and a magnetic core and a collinear magnetic wire for cutting, so as to generate small induced current, and temperature rise, and temperature of a direct current is generated; when the temperature of the air flow circulating in the drainage channel is lower than a standard value, the compressed air in the expansion air bag is precooled and contracted to drive the magnet core to move towards one end of the heat exchange plate, reverse current is generated on the coil, the value of the reverse current is in negative correlation with the value of the air cooling, so that the temperature of the gas circulating in the drainage channel is detected in real time, the influence of the air fluctuation on the detection precision is reduced, and the detection quality is improved.
Furthermore, the drainage device also comprises a heat insulation assembly, an adjusting cavity is arranged on the objective table, the heat exchange chamber and the adjusting cavity are sequentially arranged along the flow direction of gas in the drainage channel, the heat insulation assembly is arranged in the adjusting cavity and comprises a heat conducting sheet and a temperature adjusting electric cylinder, two ends of the heat conducting sheet are respectively inserted into the adjusting cavity and the drainage channel, the outer frame of the temperature adjusting electric cylinder is fixedly connected with the adjusting cavity, a sealing plate is arranged at the output end of the temperature adjusting electric cylinder, the outer side of the sealing plate is connected with the adjusting cavity in a dynamic sealing manner, the adjusting cavity is positioned at one side of the sealing plate, away from the temperature adjusting electric cylinder, and is filled with cooling liquid, one side of the heat conducting sheet is inserted into the cooling liquid, and the coil is electrically connected with the temperature adjusting electric cylinder;
when the temperature is reduced: the output end of the temperature adjusting electric cylinder contracts, and the sealing plate moves towards one side of the temperature adjusting electric cylinder.
The heat-insulating assembly is installed through the adjusting cavity, the heat-exchanging chamber is located at the front end of the flow direction of gas in the drainage channel, the adjusting cavity is located at the rear end, real-time temperature adjustment is facilitated, heat transfer is performed through the heat conducting fins, the heat conducting fins are respectively inserted into the adjusting cavity and the drainage channel, the coil is electrically connected with the temperature-adjusting electric cylinder, the sealing plate is driven to slide along the adjusting cavity through the output displacement of the temperature-adjusting electric cylinder, the peripheral surface of the sealing plate is hermetically connected with the adjusting cavity, when the temperature of inlet air is too high, forward current is generated on the coil, the sealing plate is driven to contract through the temperature-adjusting electric cylinder, the liquid-containing space cut by the sealing plate is increased, the gas phase pressure above the cooling liquid is reduced and is unsaturated vapor pressure, the liquid phase cooling liquid is constantly gasified, the gas phase pressure is balanced, the gas phase pressure absorbs heat along with the gasification of the cooling liquid, the temperature of the liquid phase cooling liquid is constantly lowered, the cooling liquid after cooling is automatically cooled through the heat conducting fins, the temperature of the cooling liquid is reduced, the temperature of the temperature-adjusting electric cylinder is in a positive correlation with the shrinkage of the coil, the temperature of the temperature-adjusting electric cylinder, the coil, the current value of the inlet air is automatically compensated, and the accuracy is improved.
Furthermore, the heat insulation assembly also comprises a blocking plate, a rotary groove is arranged on the objective table, the rotary groove is intermittently communicated with the adjusting cavity, and the blocking plate is rotationally connected with the rotary groove;
in the initial state: the volume of the liquid filled in the adjusting cavity is larger than that of the cavity at the same side of the sealing plate.
Carry out the shutoff through the closure plate to the rotary trough, rotary trough and regulation chamber intercommunication are convenient for carry out the coolant liquid circulation, along with the coolant liquid constantly uses, coolant liquid temperature risees, when coolant liquid temperature is too high, the closure plate is opened, makes rotary trough and regulation chamber switch on, is convenient for draw out the coolant liquid of gaseous phase, is convenient for carry out external cooling, prevents that coolant liquid temperature is too high, influences the cooling effect, and regulation chamber topping up volume is greater than homonymy cavity volume, is convenient for improve from cold effect.
Furthermore, the heat preservation assembly also comprises an adjusting magnet and an electromagnet, wherein a stop groove is arranged on one side of the rotary groove, the electromagnet is arranged in the stop groove, a sliding groove is arranged on the blocking plate, the adjusting magnet is in sliding connection with the sliding groove, and the electromagnet is electrically connected with the coil;
when the temperature is increased: the output end of the temperature-adjusting electric cylinder extends out, the sealing plate moves towards one side far away from the temperature-adjusting electric cylinder, opposite ends of the adjusting magnet and the electromagnet are of different magnetic poles, and two ends of the adjusting magnet are respectively inserted into the sliding groove and the stop groove.
Through the state of adjusting magnet and electromagnet control closure plate, when the air inlet temperature is low excessively, produce reverse current on the coil, the electric jar that controls to adjust the temperature stretches out the end and stretches out, electromagnet and coil switch on, present the synonym magnetic pole, the electromagnet is motionless, under the magnetic pole suction effect, make the partial spout roll-off of adjusting magnet, and insert by the inslot, thereby spacing to the closure plate, the regulation chamber space of extrusion topping up part, along with pressure increase, make the coolant liquid pressurized liquefaction of gaseous phase, the liquefaction in-process is exothermic, heat the coolant liquid of liquid phase, transfer heat through the conducting strip, thereby heat the air inlet, thereby according to different air inlet temperatures, regulate and control automatically.
Furthermore, a liquid storage chamber is arranged on the objective table, the adjusting cavity is intermittently communicated with the liquid storage chamber through a rotary groove, the heat preservation assembly further comprises a floating plate, the floating plate is arranged in a wedge shape, the width of the floating plate is gradually reduced from bottom to top, and the sealing plate is in intermittent transmission connection with the floating plate.
Adjust chamber one side and be equipped with the wedge groove, kickboard and wedge groove frictional contact, the wedge groove with end the groove intercommunication, during the exhaust, promote the closing plate through adjusting the electric cylinder, the closing plate drives the kickboard and shifts up along the wedge groove, directional regulation magnet and the electro-magnet junction in wedge groove upper end, set up through the kickboard gradual change, magnet is adjusted to kickboard inclined plane orientation, the kickboard shifts up the in-process, it contracts to drive regulation magnet and contracts, in adjusting magnet withdraws the spout completely, the closure plate no longer by spacingly, along with pressure boost, make gaseous phase coolant liquid after the pressure boost promote the closure plate and rotate, and flow out from adjusting the chamber, and in the fluid reservoir chamber of flow path, be convenient for carry out the coolant liquid circulation.
Preferably, the drainage device further comprises a condensation pipe, and the condensation pipe is arranged in the liquid storage chamber. The excessive gas-phase cooling liquid is cooled and liquefied through the condensing pipe, and the liquefied cooling liquid is re-pumped into the adjusting cavity through the circulating pump to perform forced circulation.
And optimally, the tail end of the drainage channel is provided with a heat exchange assembly, and the tail end coil is intermittently and electrically connected with the sedimentation electric cylinder. The tail end of the drainage channel is also provided with a group of heat exchange assemblies, the temperature of gas discharged from the positioning cavity is monitored through the tail end of the heat exchange assemblies, a coil at the tail end and a settlement electric cylinder are communicated into an adjusting circuit through a wire, the adjusting circuit is cut off under a normal state, when an IGBT (insulated gate bipolar transistor) chip is damaged, the overheat is easily caused in a short time, the instantaneous temperature of the discharged gas is increased, when the instantaneous passing current on the coil at the tail end is too large, the adjusting circuit is switched on, the settlement electric cylinder is started, the capping is driven to move downwards, a contact is separated from the IGBT chip, the detection circuit is cut off, the drainage channel is blocked by the capping, the air flow exchange is prevented, the loss of equipment and personnel caused by the breakdown of too large current in an air interval is prevented, and the detection safety is improved.
As optimization, the blocking plate is arranged in an arc shape on one side far away from the rotating axis, and the rotating groove is matched with the arc-shaped surface of the blocking plate. Through closure plate terminal surface arc setting, the equivalent sealing area between increase closure plate and commentaries on classics groove is convenient for carry out stress dispersion, improves life.
Compared with the prior art, the invention has the following beneficial effects: when the temperature of the gas flowing in the drainage channel is too high, the compressed gas in the expansion air bag is heated and expanded, the magnetic core is driven to move through the transmission of the top plate, the axes of the coil and the magnetic core are collinear, the coil performs cutting magnetic induction line motion to generate induction current, and the magnitude of the induction current is in positive correlation with the magnitude of the temperature rise of the gas; when the temperature of the air flow circulating in the drainage channel is lower than a standard value, the compressed air in the expansion air bag is precooled and contracted to drive the magnet core to move towards one end of the heat exchange plate, reverse current is generated on the coil, and the magnitude of the reverse current value is in negative correlation with the magnitude of the air cooling, so that the temperature of the air circulating in the drainage channel is detected in real time, the influence of air fluctuation on the detection precision is reduced, and the detection quality is improved; when the temperature of inlet air is too high, forward current is generated on the coil, the temperature-adjusting electric cylinder drives the sealing plate to contract, so that the liquid-containing space cut by the sealing plate is enlarged, the gas phase pressure above the cooling liquid is reduced and is unsaturated vapor pressure, the liquid-phase cooling liquid is continuously gasified, the gas phase pressure is balanced, the temperature of the liquid-phase cooling liquid is continuously reduced along with the gasification and heat absorption of the cooling liquid, the cooling liquid is automatically cooled, the cooled cooling liquid is conducted through the heat conducting sheet, so that the inlet air is cooled, the contraction quantity of the temperature-adjusting electric cylinder is in positive correlation with the current value on the coil, the over-temperature compensation is performed on the inlet air, and the temperature control precision is improved; when the temperature of the inlet air is too low, reverse current is generated on the coil, the extending end of the temperature-adjusting electric cylinder is controlled to extend out, the electromagnet is conducted with the coil to present a synonym magnetic pole, the electromagnet is not moved, the adjusting magnet part slides out of the chute under the action of magnetic pole attraction and is inserted into the stop groove, so that the blocking plate is limited, the adjusting cavity space of the liquid filling part is extruded, the gas-phase cooling liquid is pressurized and liquefied along with the increase of pressure, heat is released in the liquefying process, the liquid-phase cooling liquid is heated, heat is transferred through the heat conducting fins, the inlet air is heated, and the adjustment and control are automatically performed according to different inlet air temperatures.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a schematic view of the power-on detection of the present invention;
FIG. 3 is an enlarged view of portion A of the view of FIG. 2;
FIG. 4 is an enlarged view of portion B of the view of FIG. 3;
FIG. 5 is a sectional view taken along line H-H of the view of FIG. 3;
FIG. 6 is a schematic illustration of the forced venting of the coolant of the present invention;
in the figure: 1-detection box, 11-working chamber, 12-pressurizing chamber, 13-bypass flow channel, 14-guide groove, 2-bearing device, 21-conveying belt, 22-objective table, 221-positioning chamber, 222-heat exchange chamber, 223-drainage channel, 224-adjusting chamber, 225-liquid storage chamber, 226-cut-off groove, 227-rotary groove, 23-centering component, 231-settlement electric cylinder, 232-capping, 233-contact, 3-drainage device, 31-heat preservation component, 311-heat conducting sheet, 312-blocking plate, 3121-sliding groove, 313-temperature adjusting electric cylinder, 314-adjusting magnet, 315-electromagnet, 316-floating plate, 32-heat exchange component, 321-expansion air bag, 322-magnetic core, 323-coil, 324-top plate, 325-heat exchange plate, 33-fan, 34-condensation pipe, 4-detection power supply and 5-feeding mechanical arm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the technical scheme that:
as shown in fig. 1-6, a high-voltage and high-temperature resistant IGBT chip high-voltage current detection device, including detection case 1, bear device 2, drainage device 3 and detection power supply 4, detection case 1 and bear device 2 and connect, bear device 2 and drainage device 3 and connect, drainage device 3 and detection case 1 fastening connection, detection power supply 4 frame and detection case 1 fastening connection, detection power supply 4 and bear device 2 electricity and connect, be equipped with working chamber 11 on the detection case 1, working chamber 11 both sides are equipped with feed inlet and discharge gate respectively, bear device 2 and include conveyer belt 21, conveyer belt 21 one end passes the feed inlet in proper order, working chamber 11 and discharge gate, conveyer belt 21 and working chamber 11 swing joint, be equipped with a plurality of objective tables 22 on the conveyer belt 21 surface, be equipped with location chamber 221 on the objective table 22, the side opening setting on location chamber 221, the conveyer belt 21 entrance point is equipped with material loading manipulator 5.
Detection case 1 is main installation basis, install each other device, carry the IGBT chip through bearing device 2, carry out gas drainage through drainage device 3, prevent that the interior high temperature of working chamber 11, the influence detects the precision, supply power through detecting power 4, detect power 4 and bear the device 2 electricity and connect, automatic control circular telegram and switch on, carry out the chip transmission through conveyer belt 21, carry out automatic feeding through material loading manipulator 5, place the IGBT in the location chamber 221 on objective table 22, carry out the automatic positioning, reduce artifical the participation, prevent to cause the injury to operating personnel when carrying out high-tension current and detecting.
Further, the bearing device 2 comprises a centering component 23, the detection power supply 4 is electrically connected with the centering component 23, a guide groove 14 is arranged on the upper side of the working cavity 11, the centering component 23 is arranged in the guide groove 14, the centering component 23 comprises a settling electric cylinder 231, the outer frame of the settling electric cylinder 231 is tightly connected with the guide groove 14, a top seal 232 is arranged at the output end of the settling electric cylinder 231, the top seal 232 is matched with the inlet of the positioning cavity 221, a contact 233 is arranged on the lower side of the top seal 232, the drainage device 3 comprises a heat exchange component 32 and a fan 33, a pressurization chamber 12 is arranged on the detection box 1, the fan 33 is arranged in the pressurization chamber 12, a bypass flow channel 13 is arranged on one side of the pressurization chamber 12, the outlet end of the fan 33 is communicated with the bypass flow channel 13, a drainage channel 223 is arranged on the objective table 22, the outlet of the bypass flow channel 13 is communicated with the drainage channel 223 at the lower end of the settling electric cylinder 231, the flow guide 223 is communicated with the positioning cavity 221, a heat exchange chamber 222 is arranged on one side of an inlet of the flow guide 223, the heat exchange assembly 32 is arranged in the heat exchange chamber 222, the heat exchange assembly 32 comprises an expansion air bag 321, a magnet core 322 and a coil 323, the expansion air bag 321 is arranged on one side, close to the flow guide 223, of the heat exchange chamber 222, the flow guide 223 is communicated with the heat exchange chamber 222, a plurality of heat exchange plates 325 extending outwards are arranged in the expansion air bag 321, one end, far away from the expansion air bag 321, of each heat exchange plate 325 is inserted into the flow guide 223, a top plate 324 is arranged at one end, far away from the heat exchange plate 325, of each expansion air bag 321, the expansion air bag 321 is in transmission connection with the magnet core 322 through the top plate 324, the coil 323 is arranged in the heat exchange chamber 222, and the axis of the magnet core 322 is collinear with the axis of the coil 323.
The upper end of the adjusting cavity 224 is sealed through the centering assembly 23, so that external air is prevented from entering the positioning cavity 221 and affecting detection precision, the detection power supply 4 is electrically connected with the two contacts 233 through a lead, the two contacts are installed through the capping 232, transmission is performed through the conveying belt 21, when the IGBT chip is moved to the lower end of the capping 232, the settlement electric cylinder 231 outputs displacement to drive the capping 232 to move downwards until the two contacts 233 are conducted with the IGBT chip circuit, high-voltage current detection is performed, the fan 33 is installed through the pressurizing chamber 12, air pressurization is performed through the fan 33, pressurized gas is conveyed into the drainage channel 223 through the bypass flow channel 13, the situation that the temperature is too high during detection of the IGBT chip and causes detection damage to the IGBT chip is prevented, the heat exchange assembly 32 is installed through the heat exchange chamber 222, the heat exchange chamber 222 performs single-side limiting on the expansion air bag 321, compressed gas is filled in the expansion air bag 321, gas flowing through the drainage channel 223 is detected through the heat exchange plate 325, the situation that the high-voltage current is prevented from being too high to affect the quality due to heat exchange, when the temperature of the gas flowing through the high-pressure air bag 321, the expansion coil, the magnetic core coil drives the magnet core to move, the magnet core 322 which is heated magnet core to generate collinear motion, and the magnet core 322, the magnet core temperature induction current is generated by the magnet core 322; when the temperature of the air flow flowing in the drainage channel 223 is lower than a standard value, the compressed air in the expansion air bag 321 is precooled and contracted to drive the magnet core 322 to move towards one end of the heat exchange plate 325, reverse current is generated on the coil 323, the reverse current value is in negative correlation with the air cooling value, and therefore real-time temperature detection is carried out on the air flowing in the drainage channel 223, the influence of air fluctuation on detection precision is reduced, and detection quality is improved.
Furthermore, the drainage device 3 further comprises a heat insulation assembly 31, an adjusting cavity 224 is arranged on the stage 22, the heat exchange chamber 222 and the adjusting cavity 224 are sequentially arranged along the gas flowing direction in the drainage channel 223, the heat insulation assembly 31 is arranged in the adjusting cavity 224, the heat insulation assembly 31 comprises a heat conduction sheet 311 and a temperature adjusting electric cylinder 313, two ends of the heat conduction sheet 311 are respectively inserted into the adjusting cavity 224 and the drainage channel 223, the outer frame of the temperature adjusting electric cylinder 313 is fixedly connected with the adjusting cavity 224, a sealing plate is arranged at the output end of the temperature adjusting electric cylinder 313, the outer side of the sealing plate is in dynamic sealing connection with the adjusting cavity 224, the adjusting cavity 224 is positioned at one side of the sealing plate, which is far away from the temperature adjusting electric cylinder 313, and is filled with cooling liquid, one side of the heat conduction sheet 311 is inserted into the cooling liquid, and the coil 323 is electrically connected with the temperature adjusting electric cylinder 313;
when cooling: the output end of the temperature adjusting electric cylinder 313 contracts, and the sealing plate moves to one side of the temperature adjusting electric cylinder 313.
The utility model discloses a heat preservation assembly 31, heat preservation assembly 224, regulation chamber 224 is located the gas flow direction front end in drainage way 223, regulation chamber 224 is located the rear end, be convenient for carry out temperature real-time adjustment, heat transfer is carried out through conducting strip 311, conducting strip 311 inserts respectively in regulation chamber 224 and drainage way 223, coil 323 links with temperature regulation electric cylinder 313 electricity, export the displacement through temperature regulation electric cylinder 313 and drive the closing plate and slide along adjusting chamber 224, closing plate surface all around and regulation chamber 224 sealing connection, when the inlet air temperature is too high, produce forward current on the coil, drive the closing plate through temperature regulation electric cylinder 313 and shrink, make the liquid-containing space that the closing plate blocks increase, the gaseous phase pressure of coolant top reduces, for unsaturated vapor pressure, thereby make the coolant liquid of liquid phase constantly gasify, balance gaseous phase pressure, along with coolant gasification heat absorption, make the coolant liquid temperature of liquid phase constantly reduce, carry out the automatic cooling to the coolant liquid, the back cooling liquid passes through the cooling liquid cooling after the cooling, thereby the temperature control over cooling liquid is carried out the heat transfer to the temperature compensation cylinder 311, thereby the temperature control on-over-by-air cylinder increases.
Further, the heat preservation assembly 31 further comprises a blocking plate 312, a rotary groove 227 is formed in the object stage 22, the rotary groove 227 is intermittently communicated with the adjusting cavity 224, and the blocking plate 312 is rotatably connected with the rotary groove 227;
in the initial state: the volume of the liquid filled in the adjusting cavity 224 is larger than that of the cavity on the same side of the sealing plate.
Carry out the shutoff through closure plate 312 to rotary trough 227, rotary trough 227 and regulation chamber 224 intercommunication, be convenient for carry out the coolant liquid circulation, along with the coolant liquid constantly uses, coolant liquid temperature risees, when coolant liquid temperature is too high, closure plate 312 is opened, make rotary trough 227 and regulation chamber 224 switch on, be convenient for with the coolant liquid drainage of gaseous phase go, be convenient for carry out external cooling, prevent that coolant liquid temperature is too high, influence cooling effect, regulation chamber 224 liquid filling volume is greater than homonymy cavity volume, be convenient for improve from cooling effect.
Further, the heat preservation assembly 31 further comprises an adjusting magnet 314 and an electromagnet 315, a stop groove 226 is arranged on one side of the rotary groove 227, the electromagnet 315 is arranged in the stop groove 226, a sliding groove 3121 is arranged on the blocking plate 312, the adjusting magnet 314 is in sliding connection with the sliding groove 3121, and the electromagnet 315 is electrically connected with the coil 323;
when the temperature is increased: the output end of the temperature adjusting electric cylinder 313 extends out, the sealing plate moves to one side far away from the temperature adjusting electric cylinder 313, the opposite ends of the adjusting magnet 314 and the electromagnet 315 are of different magnetic poles, and the two ends of the adjusting magnet 314 are respectively inserted into the sliding groove 3121 and the cut-off groove 226.
The state of the blocking plate 312 is controlled by the adjusting magnet 314 and the electromagnet 315, when the temperature of inlet air is too low, reverse current is generated on the coil 323, the extending end of the temperature adjusting electric cylinder 313 is controlled to extend out, the electromagnet 315 is conducted with the coil to present a unlike magnetic pole, the electromagnet 315 is not moved, the adjusting magnet 314 partially slides out of the sliding groove 3121 under the action of magnetic pole attraction and is inserted into the stopping groove 226, so that the blocking plate 312 is limited, the space of the adjusting cavity 224 of the liquid filling part is extruded, the gas-phase cooling liquid is pressurized and liquefied along with the increase of pressure, heat is released in the liquefying process, the liquid-phase cooling liquid is heated, heat is transferred through the heat conducting sheet 311, the inlet air is heated, and automatic adjustment and control are performed according to different temperatures of the inlet air.
Furthermore, the object stage 22 is provided with a liquid storage chamber 225, the adjusting cavity 224 is intermittently communicated with the liquid storage chamber 225 through a rotary groove 227, the heat preservation assembly 31 further comprises a floating plate 316, the floating plate 316 is arranged in a wedge shape, the width of the floating plate 316 is gradually reduced from bottom to top, and the sealing plate is intermittently in transmission connection with the floating plate 316.
The wedge groove is arranged on one side of the adjusting cavity 224, the floating plate 316 is in friction contact with the wedge groove, the wedge groove is communicated with the stopping groove 226, when air is exhausted, the sealing plate is pushed by the adjusting electric cylinder 313, the sealing plate drives the floating plate 316 to move upwards along the wedge groove, the upper end of the wedge groove points to the joint of the adjusting magnet 314 and the electromagnet 315, the floating plate 316 is gradually arranged, the inclined surface of the floating plate 316 faces the adjusting magnet 314, the adjusting magnet 314 is driven to retract in the upwards moving process of the floating plate 316, the stopping plate 312 is not limited any more until the adjusting magnet 314 is completely retracted into the sliding groove 3121, and the pressurized gas-phase cooling liquid pushes the stopping plate 312 to rotate and flows out of the adjusting cavity 224 and flows into the liquid storage chamber 225, so that cooling liquid circulation is facilitated.
Preferably, the drainage device 3 further comprises a condensation tube 34, the condensation tube 34 being arranged in the reservoir 225. The overflowing gas-phase cooling liquid is cooled and liquefied through the condensation pipe 34, and the liquefied cooling liquid is pumped into the adjusting cavity 224 again through the circulating pump to be forcibly circulated.
Preferably, the heat exchange assembly 32 is arranged at the tail end of the drainage channel 223, and the tail end coil 323 is electrically connected with the settling electric cylinder 231 intermittently. The tail end of the drainage channel 223 is also provided with a group of heat exchange assemblies 32, the temperature of gas discharged from the positioning cavity 221 is monitored through the tail end heat exchange assemblies 32, a tail end coil 323 and a settlement electric cylinder 231 are communicated through a wire to form a regulating circuit, the regulating circuit is turned off in a normal state, when an IGBT chip is damaged, the temperature is easily over-heated in a short time, the instantaneous temperature of the discharged gas is raised, when the instantaneous passing current on the tail end coil 323 is overlarge, the regulating circuit is turned on, the settlement electric cylinder 231 is started to drive the top seal 232 to move downwards, so that the contact 233 is separated from the IGBT chip, the detection circuit is turned off, the drainage channel 223 is blocked by the top seal 232, the gas flow exchange is prevented, the equipment and personnel loss caused by the fact that the air is broken through the overlarge current is avoided, and the detection safety is improved.
Preferably, the blocking plate 312 is arranged in an arc shape on the side far away from the rotation axis, and the rotation slot 227 is matched with the arc-shaped surface of the blocking plate 312. Through closure plate 312 terminal surface arc setting, the equivalent sealing area between increase closure plate 312 and rotary trough 227 is convenient for carry out the stress dispersion, improves life.
The working principle of the invention is as follows: when the temperature of the gas flowing in the drainage channel 223 is too high, the compressed gas in the expansion air bag 321 is heated and expanded, the magnetic core 322 is driven to move through the transmission of the top plate 324, the axes of the coil 323 and the magnetic core 322 are collinear, the coil performs cutting magnetic induction line motion to generate induction current, and the magnitude of the induction current is in positive correlation with the magnitude of the temperature rise of the gas; when the temperature of the air flow flowing in the drainage channel 223 is lower than a standard value, the compressed air in the expansion air bag 321 is precooled and contracted to drive the magnet core 322 to move towards one end of the heat exchange plate 325, the coil 323 generates reverse current, and the reverse current value is in negative correlation with the air cooling value, so that the temperature of the air flowing in the drainage channel 223 is detected in real time, the influence of air fluctuation on the detection precision is reduced, and the detection quality is improved; when the temperature of the inlet air is too high, forward current is generated on the coil, the temperature-adjusting electric cylinder 313 drives the sealing plate to contract, so that the liquid-containing space cut by the sealing plate is enlarged, the gas phase pressure above the cooling liquid is reduced and is unsaturated vapor pressure, the liquid-phase cooling liquid is continuously gasified, the gas phase pressure is balanced, the temperature of the liquid-phase cooling liquid is continuously reduced along with the gasification and heat absorption of the cooling liquid, the cooling liquid is automatically cooled, the cooled cooling liquid conducts heat through the heat conducting sheet 311, so that the inlet air is cooled, the contraction quantity of the temperature-adjusting electric cylinder 313 is positively correlated with the current value on the coil 323, the over-temperature of the inlet air is automatically compensated, and the temperature control precision is improved; when the temperature of the inlet air is too low, reverse current is generated on the coil 323, the extending end of the temperature-adjusting electric cylinder 313 is controlled to extend out, the electromagnet 315 is conducted with the coil to present a synonym magnetic pole, the electromagnet 315 is not moved, the adjusting magnet 314 slides out of the sliding groove 3121 under the action of the magnetic pole suction force and is inserted into the cut-off groove 226, so that the blocking plate 312 is limited, the space of the adjusting cavity 224 of the liquid-filled part is extruded, the gas-phase cooling liquid is pressurized and liquefied along with the increase of the pressure, heat is released in the liquefaction process, the liquid-phase cooling liquid is heated, heat is transferred through the heat conducting sheet 311, and the inlet air is heated, so that the adjustment and control are automatically performed according to different inlet air temperatures.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a high-pressure current detection device of high temperature and high pressure resistant IGBT chip which characterized in that: high-tension current detection device includes detection case (1), bears device (2), drainage device (3) and detection power supply (4), detection case (1) and bear device (2) and connect, bear device (2) and drainage device (3) and connect, drainage device (3) and detection case (1) fastening connection, detection power supply (4) frame and detection case (1) fastening connection, detection power supply (4) and bear device (2) electricity and connect, be equipped with working chamber (11) on detection case (1), working chamber (11) both sides are equipped with feed inlet and discharge gate respectively, bear device (2) including conveyer belt (21), conveyer belt (21) one end passes feed inlet, working chamber (11) and discharge gate in proper order, conveyer belt (21) and working chamber (11) swing joint, be equipped with a plurality of objective tables (22) on conveyer belt (21) surface, be equipped with location chamber (221) on objective table (22), location chamber (221) upside opening sets up, conveyer belt (21) are equipped with entry manipulator (5).
2. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 1, characterized in that: the bearing device (2) comprises a centering assembly (23), the detection power supply (4) is electrically connected with the centering assembly (23), a guide groove (14) is arranged on the upper side of the working cavity (11), the centering assembly (23) is arranged in the guide groove (14), the centering assembly (23) comprises a settlement electric cylinder (231), an outer frame of the settlement electric cylinder (231) is fixedly connected with the guide groove (14), a capping (232) is arranged at the output end of the settlement electric cylinder (231), the capping (232) is matched with an inlet of the positioning cavity (221), a contact (233) is arranged on the lower side of the capping (232), the drainage device (3) comprises a heat exchange assembly (32) and a fan (33), a pressurization chamber (12) is arranged on the detection box (1), the fan (33) is arranged in the pressurization chamber (12), a bypass flow channel (13) is arranged on one side of the pressurization chamber (12), the outlet end of the fan (33) is communicated with the bypass flow channel (13), a drainage channel (223) is arranged on the objective table (22), the outlet of the bypass flow channel (13) is communicated with the drainage channel (231) and the positioning cavity (222), the drainage channel (223) is communicated with the positioning cavity (222), the heat exchange assembly (32) comprises an expansion air bag (321), a magnet core (322) and a coil (323), the expansion air bag (321) is arranged on one side, close to the drainage channel (223), of the heat exchange chamber (222), the drainage channel (223) is communicated with the heat exchange chamber (222), a plurality of heat exchange plates (325) extending outwards are arranged in the expansion air bag (321), one ends, far away from the expansion air bag (321), of the heat exchange plates (325) are inserted into the drainage channel (223), a top plate (324) is arranged at one end, far away from the heat exchange plates (325), of the expansion air bag (321), the expansion air bag (321) is in transmission connection with the magnet core (322) through the top plate (324), the coil (323) is arranged in the heat exchange chamber (222), and the axis of the magnet core (322) is collinear with the axis of the coil (323).
3. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 2, characterized in that: the drainage device (3) further comprises a heat preservation assembly (31), an adjusting cavity (224) is arranged on the objective table (22), the heat exchange chamber (222) and the adjusting cavity (224) are sequentially arranged along the flowing direction of gas in a drainage channel (223), the heat preservation assembly (31) is arranged in the adjusting cavity (224), the heat preservation assembly (31) comprises a heat conducting sheet (311) and a temperature adjusting electric cylinder (313), two ends of the heat conducting sheet (311) are respectively inserted into the adjusting cavity (224) and the drainage channel (223), an outer frame of the temperature adjusting electric cylinder (313) is fixedly connected with the adjusting cavity (224), a sealing plate is arranged at the output end of the temperature adjusting electric cylinder (313), the outer side of the sealing plate is connected with the adjusting cavity (224) in a dynamic sealing mode, cooling liquid is filled in the adjusting cavity (224) which is located on the side, far away from the temperature adjusting electric cylinder (313), of the heat conducting sheet (311) is inserted into the cooling liquid, and the coil (323) is electrically connected with the temperature adjusting electric cylinder (313);
when cooling: the output end of the temperature adjusting electric cylinder (313) contracts, and the sealing plate moves towards one side of the temperature adjusting electric cylinder (313).
4. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 3, wherein: the heat preservation assembly (31) further comprises a blocking plate (312), a rotary groove (227) is formed in the objective table (22), the rotary groove (227) is intermittently communicated with the adjusting cavity (224), and the blocking plate (312) is rotatably connected with the rotary groove (227);
in the initial state: the volume of liquid filled in the adjusting cavity (224) is larger than that of the cavity on the same side of the sealing plate.
5. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 4, wherein: the heat preservation assembly (31) further comprises an adjusting magnet (314) and an electromagnet (315), a stop groove (226) is formed in one side of the rotary groove (227), the electromagnet (315) is arranged in the stop groove (226), a sliding groove (3121) is formed in the blocking plate (312), the adjusting magnet (314) is in sliding connection with the sliding groove (3121), and the electromagnet (315) is electrically connected with the coil (323);
when the temperature is increased: the output end of the temperature-adjusting electric cylinder (313) extends out, the sealing plate moves to one side far away from the temperature-adjusting electric cylinder (313), the opposite ends of the adjusting magnet (314) and the electromagnet (315) are of different magnetic poles, and the two ends of the adjusting magnet (314) are respectively inserted into the sliding groove (3121) and the cut-off groove (226).
6. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 5, wherein: the object stage (22) is provided with a liquid storage chamber (225), the adjusting cavity (224) is intermittently communicated with the liquid storage chamber (225) through a rotary groove (227), the heat preservation assembly (31) further comprises a floating plate (316), the floating plate (316) is arranged in a wedge shape, the width of the floating plate (316) is gradually reduced from bottom to top, and the sealing plate is intermittently in transmission connection with the floating plate (316).
7. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 6, wherein: the drainage device (3) further comprises a condensation tube (34), the condensation tube (34) being arranged in the reservoir (225).
8. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 7, characterized in that: and the tail end of the drainage channel (223) is provided with a heat exchange assembly (32), and the coil (323) at the tail end is intermittently and electrically connected with the sedimentation electric cylinder (231).
9. The high-voltage current detection device of the IGBT chip resistant to high temperature and high voltage as claimed in claim 8, wherein: the rotation axis one side arc setting is kept away from in closure plate (312), rotor trough (227) and closure plate (312) arcwall face adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211116012.1A CN115201549B (en) | 2022-09-14 | 2022-09-14 | High-temperature and high-voltage resistant IGBT chip high-voltage current detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211116012.1A CN115201549B (en) | 2022-09-14 | 2022-09-14 | High-temperature and high-voltage resistant IGBT chip high-voltage current detection device |
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| CN115201549A true CN115201549A (en) | 2022-10-18 |
| CN115201549B CN115201549B (en) | 2023-01-10 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241293Y (en) * | 1995-10-17 | 1996-11-27 | 顺德珠江空调设备厂 | Outdoor machine of improved cooling and heating type split air conditioner |
| JP2009139062A (en) * | 2007-12-10 | 2009-06-25 | Nippon Spindle Mfg Co Ltd | Temperature regulator |
| CN101490366A (en) * | 2006-07-21 | 2009-07-22 | Mdi-汽车发展国际股份公司 | Ambient temperature thermal energy and constant pressure cryogenic engine |
| CN201778886U (en) * | 2010-08-17 | 2011-03-30 | 广西玉柴机器股份有限公司 | Diesel engine thermosistor seat used for slide valve type thermosistor |
| CN207936486U (en) * | 2018-01-09 | 2018-10-02 | 天津市天二通阀门自控有限公司 | A kind of novel constant-temperature actuator with self-regulated temperature function |
| JP2019052826A (en) * | 2017-09-19 | 2019-04-04 | アイシン精機株式会社 | Temperature control device |
| CN111669122A (en) * | 2020-06-08 | 2020-09-15 | 陆林娣 | Automatic cooling system and cooling method for photovoltaic cell panel |
| CN114608071A (en) * | 2022-03-14 | 2022-06-10 | 珠海凌达压缩机有限公司 | Control device and method of air conditioning system and air conditioning system |
| CN114720858A (en) * | 2022-05-11 | 2022-07-08 | 江苏锦花电子股份有限公司 | LED wiring circuit board uniformity of brazing circular telegram detection device |
| CN114871387A (en) * | 2022-04-21 | 2022-08-09 | 上海嘉朗实业南通智能科技有限公司 | Uniform-speed cooling equal-stress aluminum alloy casting mold device |
-
2022
- 2022-09-14 CN CN202211116012.1A patent/CN115201549B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241293Y (en) * | 1995-10-17 | 1996-11-27 | 顺德珠江空调设备厂 | Outdoor machine of improved cooling and heating type split air conditioner |
| CN101490366A (en) * | 2006-07-21 | 2009-07-22 | Mdi-汽车发展国际股份公司 | Ambient temperature thermal energy and constant pressure cryogenic engine |
| JP2009139062A (en) * | 2007-12-10 | 2009-06-25 | Nippon Spindle Mfg Co Ltd | Temperature regulator |
| CN201778886U (en) * | 2010-08-17 | 2011-03-30 | 广西玉柴机器股份有限公司 | Diesel engine thermosistor seat used for slide valve type thermosistor |
| JP2019052826A (en) * | 2017-09-19 | 2019-04-04 | アイシン精機株式会社 | Temperature control device |
| CN207936486U (en) * | 2018-01-09 | 2018-10-02 | 天津市天二通阀门自控有限公司 | A kind of novel constant-temperature actuator with self-regulated temperature function |
| CN111669122A (en) * | 2020-06-08 | 2020-09-15 | 陆林娣 | Automatic cooling system and cooling method for photovoltaic cell panel |
| CN114608071A (en) * | 2022-03-14 | 2022-06-10 | 珠海凌达压缩机有限公司 | Control device and method of air conditioning system and air conditioning system |
| CN114871387A (en) * | 2022-04-21 | 2022-08-09 | 上海嘉朗实业南通智能科技有限公司 | Uniform-speed cooling equal-stress aluminum alloy casting mold device |
| CN114720858A (en) * | 2022-05-11 | 2022-07-08 | 江苏锦花电子股份有限公司 | LED wiring circuit board uniformity of brazing circular telegram detection device |
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| CN115201549B (en) | 2023-01-10 |
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Denomination of invention: A High Voltage Current Detection Device for IGBT Chips with High Temperature and High Voltage Resistance Effective date of registration: 20231115 Granted publication date: 20230110 Pledgee: Jiangsu Gaoyou Rural Commercial Bank Co.,Ltd. Pledgor: YANGZHOU GANGXIN PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2023320000568 |