CN209400093U - A kind of IGBT and its electromagnetic oven circuit with temperature transducer - Google Patents
A kind of IGBT and its electromagnetic oven circuit with temperature transducer Download PDFInfo
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- CN209400093U CN209400093U CN201822224481.0U CN201822224481U CN209400093U CN 209400093 U CN209400093 U CN 209400093U CN 201822224481 U CN201822224481 U CN 201822224481U CN 209400093 U CN209400093 U CN 209400093U
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Abstract
The utility model relates to a kind of IGBT and its electromagnetic oven circuit with temperature transducer.A kind of IGBT with temperature transducer, including IGBT ontology, and the thermistor on IGBT ontology；The IGBT ontology includes protective shell, the circuit board inside protective shell, and the pin connecting with circuit board；The installation cavity with circuit board connection is equipped on the outside of the protective shell；The thermistor is set in installation cavity.The utility model thermistor is located at IGBT ontology, to be measured in real time to IGBT ontology, to be measured in real time to IGBT body interior circuit, if there is heating rapidly, can timely power off, avoid the heat damages IGBT ontology produced when this body running of IGBT.IGBT with testing temperature function is applied in electromagnetic oven circuit, and electromagnetic oven circuit can be effectively protected, and avoids electromagnetic oven working time process and IGBT fever is caused to burn out, extend the service life of electromagnetic oven.
Description
Technical field
The utility model relates to electronic products, more specifically refer to a kind of IGBT and its electricity with temperature transducer
Magnetic furnace circuit.
Background technique
IGBT explosion belongs to a kind of image performance of failure.Many times component failure be can't see from appearance it is any different
It is normal, even if encapsulation is removed, naked eye go to see chip surface also can't see it is any abnormal.And exploding is exactly very violent one kind
It fails.The basic reason exploded is still due to there is a large amount of energy to generate in device inside moment.
And household electrical appliance electromagnetic oven, IGBT are an indispensable parts.At work due to electromagnetic oven, IGBT can be generated greatly
The heat of amount, if cannot timely detection processing, it is possible to the adverse effects such as will cause the explosion of IGBT, burn out.It is therefore desirable to
IGBT is improved, so that the use of IGBT is safer.And the conventional method of existing detection IGBT temperature is to IGBT
The detection of module temperature, and often the temperature of moment increases IGBT at work, if detection IGBT module, meeting
Error is generated, obtained temperature is not the temperature on IGBT, so usually will cause the damage of IGBT.
Utility model content
The purpose of the utility model is to overcome the defect of the prior art, provide a kind of IGBT with temperature transducer and
Its electromagnetic oven circuit.
To achieve the above object, the utility model uses following technical scheme:
A kind of IGBT with temperature transducer, including IGBT ontology, and the thermistor on IGBT ontology；It is described
IGBT ontology includes protective shell, the circuit board inside protective shell, and the pin connecting with circuit board；On the outside of the protective shell
Equipped with the installation cavity with circuit board connection；The thermistor is set in installation cavity.
Its further technical solution are as follows: the installation cavity is equipped with cap；The cap is pressed together on the outside of protective shell, and
Equipped with outlet hole.
Its further technical solution are as follows: spacer is equipped between the thermistor and circuit board.
Its further technical solution are as follows: the other side that the protective shell is located at installation cavity is equipped with thermally conductive sheet；The thermally conductive sheet
For conducting the heat of IGBT ontology.
A kind of electromagnetic oven circuit of band IGBT, including above-mentioned IGBT；The gate pole G of the IGBT is connect with push-pull circuit,
Collector C is connect with input circuit, emitter E ground connection；The connection of the control unit of the thermistor and electromagnetic oven.
Its further technical solution are as follows: the push-pull circuit includes triode Q1, triode Q3；Wherein, triode Q1 is
NPN type triode, triode Q3 are PNP type triode；The emitter of the triode Q1 is connect with triode Q3 collector；Institute
The collector for stating triode Q1 is connect with input voltage, the emitter ground connection of triode Q3；The triode Q1, triode Q3
Base stage is connect with signal generating circuit.
Its further technical solution are as follows: the signal generating circuit and triode Q1, triode Q3 base stage between be equipped with
Triode Q2；The collector of the triode Q2 is connect with the base stage of triode Q1, triode Q3, and electricity occurs for base stage and signal
Road connection, emitter ground connection.
Its further technical solution are as follows: the signal generating circuit and triode Q1, triode Q3 base stage between also set
There are resistance R8, resistance R9；The resistance R8 connects with resistance R9, and is connected in parallel with triode Q2 formation；The input electricity
Pressure and the node between resistance R8, resistance R9 connect, and voltage input end is grounded by capacitor C18.
Its further technical solution are as follows: the triode Q1, triode Q3 base stage be grounded by capacitor C28.
Its further technical solution are as follows: resistance R6, zener diode DW1 between the gate pole G and emitter E of the IGBT；
The resistance R6, zener diode DW1 are in parallel.
The beneficial effect of the utility model compared with prior art is: the utility model thermistor is located at IGBT ontology,
It to be measured in real time to IGBT body interior circuit, if there is heating rapidly, can timely power off, avoid IGBT ontology work
As when the heat damages IGBT ontology that produces.IGBT with testing temperature function is applied in electromagnetic oven circuit, can effectively be protected
Electromagnetic oven circuit is protected, electromagnetic oven working time process is avoided and IGBT fever is caused to burn out, extend the service life of electromagnetic oven.
The utility model is further described in the following with reference to the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is a kind of three-dimensional structure diagram of the IGBT with temperature transducer of the utility model；
Fig. 2 is a kind of cross-sectional view of the IGBT with temperature transducer of the utility model；
Fig. 3 is a kind of three-dimensional structure diagram of the IGBT with temperature transducer of the utility model；
Fig. 4 is a kind of cross-sectional view of the IGBT with temperature transducer of the utility model；
Fig. 5 is a kind of schematic diagram of the electromagnetic oven circuit of band IGBT of the utility model；
Fig. 6 is a kind of schematic diagram of the electromagnetic oven circuit of band IGBT applied in electromagnetic oven circuit of the utility model.
Specific embodiment
In order to more fully understand the technology contents of the utility model, combined with specific embodiments below to the skill of the utility model
Art scheme is further described and illustrates, but not limited to this.
Such as the drawing that Fig. 1 to 6 is the utility model embodiment.
A kind of IGBT with temperature transducer, as shown in Figures 1 to 4, including IGBT ontology 10, and it is set to IGBT ontology
Thermistor 11 on 10.IGBT ontology 10 includes protective shell 101, the circuit board 102, Ji Yu electricity inside protective shell 101
The pin 103 that road plate 102 connects.The installation cavity 104 with 102 connection of circuit board is equipped on the outside of protective shell 101.Thermistor 11 is set
In in installation cavity 104.Thermistor 11 is used to measure the real time temperature of IGBT ontology 10, and IGBT ontology 10 is avoided to generate excessively
Heat.If temperature is excessively high, timely power-off protection IGBT.
Installation cavity 104 is equipped with cap 105.Cap 105 is pressed together on 101 outside of protective shell, and is equipped with outlet hole.
Specifically, as shown in Figure 1 to Figure 2, installation cavity 104 can be set in the end face of IGBT ontology 10, thermistor 11
It is mounted on installation cavity 104, and the circuit communication in thermistor 11 and IGBT ontology 10, so that detection is more rationally and quasi-
Really, cap 105 is equipped with for by outlet hole derived from pin or lead.
In other embodiments, as shown in Figure 3 to Figure 4, the side of IGBT ontology 10, and heat is arranged in installation cavity 104
Quick resistance 11 and the circuit communication in IGBT ontology 10, so that detection is more rationally and accurate.The output line of thermistor 11 is
Pin 108, it is identical as the structure of pin 103, when installation, only jack corresponding with pin 108 need to be set on circuit boards,
So that easy for installation.
Wherein, it is equipped with spacer 106 between thermistor 11 and circuit board 102, avoids thermistor 11 to internal circuit
Influence.
The other side that protective shell 101 is located at installation cavity 104 is equipped with thermally conductive sheet 107.Thermally conductive sheet 107 is for conducting IGBT sheet
The heat of body 10.Thermally conductive sheet 107 is the sheet metal, such as copper sheet, aluminium flake etc. of good heat conductivity.Thermally conductive sheet 107 connects with radiator
Touching, with the heat dissipation to IGBT ontology 10.
The combination of spacer 106 and thermally conductive sheet 107, so that 10 internal circuit of IGBT ontology is not impacted, it also can be quasi-
The true heat for measuring 10 internal circuit of IGBT ontology.
A kind of electromagnetic oven circuit of band IGBT, as shown in figure 5, including above-mentioned IGBT.The gate pole G of IGBT and recommend electricity
Road connection, collector C are connect with input circuit, emitter E ground connection.Thermistor 11 is connect with the control unit of electromagnetic oven, is made
The electromagnetic oven moment temperature of IGBT must be monitored, if it exceeds predetermined value, control unit uses cooling provision to IGBT.
Wherein, push-pull circuit includes triode Q1, triode Q3；Wherein, triode Q1 is NPN type triode, triode
Q3 is PNP type triode.The emitter of triode Q1 is connect with triode Q3 collector.The collector and input electricity of triode Q1
Pressure connection, the emitter ground connection of triode Q3.Triode Q1, triode Q3 base stage connect with signal generating circuit.Input electricity
Pressure is 18V.
Signal generating circuit and triode Q1, triode Q3 base stage between be equipped with triode Q2.The current collection of triode Q2
It is extremely connect with the base stage of triode Q1, triode Q3, base stage is connect with signal generating circuit, emitter ground connection.
Signal generating circuit and triode Q1, triode Q3 base stage between be additionally provided with resistance R8, resistance R9.Resistance R8 with
Resistance R9 series connection, and be connected in parallel with triode Q2 formation.Node connection between input voltage and resistance R8, resistance R9,
And voltage input end is grounded by capacitor C18.
Triode Q1, triode Q3 base stage be grounded by capacitor C28.
Resistance R6, zener diode DW1 between the gate pole G and emitter E of IGBT.Resistance R6, zener diode DW1 are simultaneously
Connection.
Specifically, being equipped with resistance R34 between the base stage and signal generating circuit of triode Q2.
Resistance R30 is equipped between triode Q1 emitter and triode Q3 collector.Also, the gate pole G of IGBT with recommend
Resistance R7 is equipped between circuit.
The model S8550 of triode Q1, triode Q2, triode Q3.
Wherein, above-mentioned IGBT circuit is as shown in Figure 6 in electromagnetic oven circuit.
In conclusion the utility model thermistor is located at IGBT ontology, to be measured in real time to IGBT ontology, with right
IGBT body interior circuit is measured in real time, and if there is heating rapidly, can timely be powered off, when avoiding this body running of IGBT
The heat damages IGBT ontology of production.IGBT with testing temperature function is applied in electromagnetic oven circuit, and electricity can be effectively protected
Magnetic furnace circuit avoids electromagnetic oven working time process and IGBT fever is caused to burn out, extends the service life of electromagnetic oven.
The above-mentioned technology contents that the utility model is only further illustrated with embodiment, in order to which reader is easier to understand,
But the embodiments of the present invention is not represented is only limitted to this, any technology done according to the utility model extends or recreation,
By the protection of the utility model.The protection scope of the utility model is subject to claims.
Claims (10)
1. a kind of IGBT with temperature transducer, which is characterized in that including IGBT ontology, and the temperature-sensitive on IGBT ontology
Resistance；The IGBT ontology includes protective shell, the circuit board inside protective shell, and the pin connecting with circuit board；It is described
The installation cavity with circuit board connection is equipped on the outside of protective shell；The thermistor is set in installation cavity.
2. a kind of IGBT with temperature transducer according to claim 1, which is characterized in that the installation cavity is equipped with envelope
Capping；The cap is pressed together on the outside of protective shell, and is equipped with outlet hole.
3. a kind of IGBT with temperature transducer according to claim 1, which is characterized in that the thermistor and electricity
Spacer is equipped between the plate of road.
4. according to claim 1 to a kind of IGBT with temperature transducer described in 3 any one, which is characterized in that described
The other side that protective shell is located at installation cavity is equipped with thermally conductive sheet；The thermally conductive sheet is used to conduct the heat of IGBT ontology.
5. a kind of electromagnetic oven circuit of band IGBT, which is characterized in that including the described in any item IGBT of Claims 1-4；It is described
The gate pole G of IGBT is connect with push-pull circuit, and collector C is connect with input circuit, emitter E ground connection；The thermistor and electricity
The control unit of magnetic furnace connects.
6. the electromagnetic oven circuit of band IGBT according to claim 5 a kind of, which is characterized in that the push-pull circuit includes three
Pole pipe Q1, triode Q3；Wherein, triode Q1 is NPN type triode, and triode Q3 is PNP type triode；The triode Q1
Emitter connect with triode Q3 collector；The collector of the triode Q1 is connect with input voltage, the hair of triode Q3
Emitter grounding；The triode Q1, triode Q3 base stage connect with signal generating circuit.
7. the electromagnetic oven circuit of band IGBT according to claim 6 a kind of, which is characterized in that the signal generating circuit with
Triode Q1, triode Q3 base stage between be equipped with triode Q2；The collector of the triode Q2 with triode Q1, three poles
The base stage of pipe Q3 connects, and base stage is connect with signal generating circuit, emitter ground connection.
8. the electromagnetic oven circuit of band IGBT according to claim 7 a kind of, which is characterized in that the signal generating circuit with
Triode Q1, triode Q3 base stage between be additionally provided with resistance R8, resistance R9；The resistance R8 connects with resistance R9, and with
Triode Q2 formation is connected in parallel；Node connection between the input voltage and resistance R8, resistance R9, and voltage input end
It is grounded by capacitor C18.
9. the electromagnetic oven circuit of band IGBT according to claim 8 a kind of, which is characterized in that the triode Q1, three poles
The base stage of pipe Q3 is grounded by capacitor C28.
10. the electromagnetic oven circuit of band IGBT according to claim 7 a kind of, which is characterized in that the gate pole G of the IGBT with
Resistance R6, zener diode DW1 between emitter E；The resistance R6, zener diode DW1 are in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224481.0U CN209400093U (en) | 2018-12-27 | 2018-12-27 | A kind of IGBT and its electromagnetic oven circuit with temperature transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224481.0U CN209400093U (en) | 2018-12-27 | 2018-12-27 | A kind of IGBT and its electromagnetic oven circuit with temperature transducer |
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| CN209400093U true CN209400093U (en) | 2019-09-17 |
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| CN201822224481.0U Active CN209400093U (en) | 2018-12-27 | 2018-12-27 | A kind of IGBT and its electromagnetic oven circuit with temperature transducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067966A (en) * | 2020-09-19 | 2020-12-11 | 哈尔滨理工大学 | Simulation type IGBT failure mechanism analysis system |
-
2018
- 2018-12-27 CN CN201822224481.0U patent/CN209400093U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067966A (en) * | 2020-09-19 | 2020-12-11 | 哈尔滨理工大学 | Simulation type IGBT failure mechanism analysis system |
| CN112067966B (en) * | 2020-09-19 | 2022-07-05 | 哈尔滨理工大学 | Simulation type IGBT failure mechanism analysis system |
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